5660 lines
169 KiB
C
5660 lines
169 KiB
C
/*
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* fs/cifs/cifssmb.c
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*
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* Copyright (C) International Business Machines Corp., 2002,2009
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* Contains the routines for constructing the SMB PDUs themselves
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
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/* These are mostly routines that operate on a pathname, or on a tree id */
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/* (mounted volume), but there are eight handle based routines which must be */
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/* treated slightly differently for reconnection purposes since we never */
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/* want to reuse a stale file handle and only the caller knows the file info */
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/vfs.h>
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#include <linux/posix_acl_xattr.h>
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#include <asm/uaccess.h>
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsacl.h"
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#include "cifsproto.h"
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#include "cifs_unicode.h"
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#include "cifs_debug.h"
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#ifdef CONFIG_CIFS_POSIX
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static struct {
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int index;
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char *name;
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} protocols[] = {
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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{LANMAN_PROT, "\2LM1.2X002"},
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{LANMAN2_PROT, "\2LANMAN2.1"},
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#endif /* weak password hashing for legacy clients */
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{CIFS_PROT, "\2NT LM 0.12"},
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{POSIX_PROT, "\2POSIX 2"},
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{BAD_PROT, "\2"}
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};
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#else
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static struct {
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int index;
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char *name;
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} protocols[] = {
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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{LANMAN_PROT, "\2LM1.2X002"},
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{LANMAN2_PROT, "\2LANMAN2.1"},
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#endif /* weak password hashing for legacy clients */
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{CIFS_PROT, "\2NT LM 0.12"},
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{BAD_PROT, "\2"}
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};
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#endif
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/* define the number of elements in the cifs dialect array */
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#ifdef CONFIG_CIFS_POSIX
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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#define CIFS_NUM_PROT 4
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#else
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#define CIFS_NUM_PROT 2
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#endif /* CIFS_WEAK_PW_HASH */
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#else /* not posix */
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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#define CIFS_NUM_PROT 3
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#else
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#define CIFS_NUM_PROT 1
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#endif /* CONFIG_CIFS_WEAK_PW_HASH */
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#endif /* CIFS_POSIX */
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/* Mark as invalid, all open files on tree connections since they
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were closed when session to server was lost */
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static void mark_open_files_invalid(struct cifsTconInfo *pTcon)
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{
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struct cifsFileInfo *open_file = NULL;
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struct list_head *tmp;
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struct list_head *tmp1;
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/* list all files open on tree connection and mark them invalid */
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write_lock(&GlobalSMBSeslock);
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list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
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open_file = list_entry(tmp, struct cifsFileInfo, tlist);
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open_file->invalidHandle = true;
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}
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write_unlock(&GlobalSMBSeslock);
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/* BB Add call to invalidate_inodes(sb) for all superblocks mounted
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to this tcon */
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}
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/* Allocate and return pointer to an SMB request buffer, and set basic
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SMB information in the SMB header. If the return code is zero, this
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function must have filled in request_buf pointer */
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static int
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small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
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void **request_buf)
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{
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int rc = 0;
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/* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
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check for tcp and smb session status done differently
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for those three - in the calling routine */
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if (tcon) {
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if (tcon->tidStatus == CifsExiting) {
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/* only tree disconnect, open, and write,
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(and ulogoff which does not have tcon)
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are allowed as we start force umount */
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if ((smb_command != SMB_COM_WRITE_ANDX) &&
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(smb_command != SMB_COM_OPEN_ANDX) &&
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(smb_command != SMB_COM_TREE_DISCONNECT)) {
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cFYI(1, ("can not send cmd %d while umounting",
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smb_command));
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return -ENODEV;
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}
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}
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if ((tcon->ses) && (tcon->ses->status != CifsExiting) &&
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(tcon->ses->server)) {
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struct nls_table *nls_codepage;
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/* Give Demultiplex thread up to 10 seconds to
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reconnect, should be greater than cifs socket
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timeout which is 7 seconds */
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while (tcon->ses->server->tcpStatus ==
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CifsNeedReconnect) {
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wait_event_interruptible_timeout(tcon->ses->server->response_q,
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(tcon->ses->server->tcpStatus ==
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CifsGood), 10 * HZ);
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if (tcon->ses->server->tcpStatus ==
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CifsNeedReconnect) {
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/* on "soft" mounts we wait once */
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if (!tcon->retry ||
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(tcon->ses->status == CifsExiting)) {
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cFYI(1, ("gave up waiting on "
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"reconnect in smb_init"));
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return -EHOSTDOWN;
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} /* else "hard" mount - keep retrying
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until process is killed or server
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comes back on-line */
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} else /* TCP session is reestablished now */
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break;
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}
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nls_codepage = load_nls_default();
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/* need to prevent multiple threads trying to
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simultaneously reconnect the same SMB session */
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down(&tcon->ses->sesSem);
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if (tcon->ses->need_reconnect)
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rc = cifs_setup_session(0, tcon->ses,
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nls_codepage);
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if (!rc && (tcon->need_reconnect)) {
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mark_open_files_invalid(tcon);
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rc = CIFSTCon(0, tcon->ses, tcon->treeName,
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tcon, nls_codepage);
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up(&tcon->ses->sesSem);
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/* BB FIXME add code to check if wsize needs
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update due to negotiated smb buffer size
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shrinking */
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if (rc == 0) {
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atomic_inc(&tconInfoReconnectCount);
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/* tell server Unix caps we support */
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if (tcon->ses->capabilities & CAP_UNIX)
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reset_cifs_unix_caps(
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0 /* no xid */,
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tcon,
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NULL /* we do not know sb */,
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NULL /* no vol info */);
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}
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cFYI(1, ("reconnect tcon rc = %d", rc));
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/* Removed call to reopen open files here.
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It is safer (and faster) to reopen files
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one at a time as needed in read and write */
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/* Check if handle based operation so we
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know whether we can continue or not without
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returning to caller to reset file handle */
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switch (smb_command) {
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case SMB_COM_READ_ANDX:
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case SMB_COM_WRITE_ANDX:
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case SMB_COM_CLOSE:
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case SMB_COM_FIND_CLOSE2:
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case SMB_COM_LOCKING_ANDX: {
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unload_nls(nls_codepage);
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return -EAGAIN;
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}
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}
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} else {
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up(&tcon->ses->sesSem);
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}
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unload_nls(nls_codepage);
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} else {
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return -EIO;
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}
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}
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if (rc)
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return rc;
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*request_buf = cifs_small_buf_get();
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if (*request_buf == NULL) {
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/* BB should we add a retry in here if not a writepage? */
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return -ENOMEM;
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}
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header_assemble((struct smb_hdr *) *request_buf, smb_command,
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tcon, wct);
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if (tcon != NULL)
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cifs_stats_inc(&tcon->num_smbs_sent);
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return rc;
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}
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int
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small_smb_init_no_tc(const int smb_command, const int wct,
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struct cifsSesInfo *ses, void **request_buf)
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{
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int rc;
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struct smb_hdr *buffer;
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rc = small_smb_init(smb_command, wct, NULL, request_buf);
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if (rc)
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return rc;
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buffer = (struct smb_hdr *)*request_buf;
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buffer->Mid = GetNextMid(ses->server);
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if (ses->capabilities & CAP_UNICODE)
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buffer->Flags2 |= SMBFLG2_UNICODE;
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if (ses->capabilities & CAP_STATUS32)
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buffer->Flags2 |= SMBFLG2_ERR_STATUS;
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/* uid, tid can stay at zero as set in header assemble */
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/* BB add support for turning on the signing when
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this function is used after 1st of session setup requests */
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return rc;
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}
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/* If the return code is zero, this function must fill in request_buf pointer */
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static int
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smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
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void **request_buf /* returned */ ,
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void **response_buf /* returned */ )
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{
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int rc = 0;
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/* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
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check for tcp and smb session status done differently
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for those three - in the calling routine */
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if (tcon) {
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if (tcon->tidStatus == CifsExiting) {
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/* only tree disconnect, open, and write,
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(and ulogoff which does not have tcon)
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are allowed as we start force umount */
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if ((smb_command != SMB_COM_WRITE_ANDX) &&
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(smb_command != SMB_COM_OPEN_ANDX) &&
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(smb_command != SMB_COM_TREE_DISCONNECT)) {
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cFYI(1, ("can not send cmd %d while umounting",
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smb_command));
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return -ENODEV;
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}
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}
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if ((tcon->ses) && (tcon->ses->status != CifsExiting) &&
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(tcon->ses->server)) {
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struct nls_table *nls_codepage;
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/* Give Demultiplex thread up to 10 seconds to
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reconnect, should be greater than cifs socket
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timeout which is 7 seconds */
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while (tcon->ses->server->tcpStatus ==
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CifsNeedReconnect) {
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wait_event_interruptible_timeout(tcon->ses->server->response_q,
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(tcon->ses->server->tcpStatus ==
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CifsGood), 10 * HZ);
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if (tcon->ses->server->tcpStatus ==
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CifsNeedReconnect) {
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/* on "soft" mounts we wait once */
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if (!tcon->retry ||
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(tcon->ses->status == CifsExiting)) {
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cFYI(1, ("gave up waiting on "
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"reconnect in smb_init"));
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return -EHOSTDOWN;
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} /* else "hard" mount - keep retrying
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until process is killed or server
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comes on-line */
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} else /* TCP session is reestablished now */
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break;
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}
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nls_codepage = load_nls_default();
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/* need to prevent multiple threads trying to
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simultaneously reconnect the same SMB session */
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down(&tcon->ses->sesSem);
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if (tcon->ses->need_reconnect)
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rc = cifs_setup_session(0, tcon->ses,
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nls_codepage);
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if (!rc && (tcon->need_reconnect)) {
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mark_open_files_invalid(tcon);
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rc = CIFSTCon(0, tcon->ses, tcon->treeName,
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tcon, nls_codepage);
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up(&tcon->ses->sesSem);
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/* BB FIXME add code to check if wsize needs
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update due to negotiated smb buffer size
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shrinking */
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if (rc == 0) {
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atomic_inc(&tconInfoReconnectCount);
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/* tell server Unix caps we support */
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if (tcon->ses->capabilities & CAP_UNIX)
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reset_cifs_unix_caps(
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0 /* no xid */,
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tcon,
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NULL /* do not know sb */,
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NULL /* no vol info */);
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}
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cFYI(1, ("reconnect tcon rc = %d", rc));
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/* Removed call to reopen open files here.
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It is safer (and faster) to reopen files
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one at a time as needed in read and write */
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|
|
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/* Check if handle based operation so we
|
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know whether we can continue or not without
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returning to caller to reset file handle */
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switch (smb_command) {
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case SMB_COM_READ_ANDX:
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case SMB_COM_WRITE_ANDX:
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case SMB_COM_CLOSE:
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case SMB_COM_FIND_CLOSE2:
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case SMB_COM_LOCKING_ANDX: {
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unload_nls(nls_codepage);
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return -EAGAIN;
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}
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}
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} else {
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up(&tcon->ses->sesSem);
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}
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unload_nls(nls_codepage);
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} else {
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return -EIO;
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}
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}
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if (rc)
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return rc;
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*request_buf = cifs_buf_get();
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if (*request_buf == NULL) {
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/* BB should we add a retry in here if not a writepage? */
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return -ENOMEM;
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}
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/* Although the original thought was we needed the response buf for */
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/* potential retries of smb operations it turns out we can determine */
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/* from the mid flags when the request buffer can be resent without */
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/* having to use a second distinct buffer for the response */
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if (response_buf)
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*response_buf = *request_buf;
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header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
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wct);
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if (tcon != NULL)
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cifs_stats_inc(&tcon->num_smbs_sent);
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return rc;
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}
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static int validate_t2(struct smb_t2_rsp *pSMB)
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{
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int rc = -EINVAL;
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int total_size;
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char *pBCC;
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/* check for plausible wct, bcc and t2 data and parm sizes */
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/* check for parm and data offset going beyond end of smb */
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if (pSMB->hdr.WordCount >= 10) {
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if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
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(le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
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/* check that bcc is at least as big as parms + data */
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/* check that bcc is less than negotiated smb buffer */
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total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
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if (total_size < 512) {
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total_size +=
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le16_to_cpu(pSMB->t2_rsp.DataCount);
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/* BCC le converted in SendReceive */
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pBCC = (pSMB->hdr.WordCount * 2) +
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sizeof(struct smb_hdr) +
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(char *)pSMB;
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if ((total_size <= (*(u16 *)pBCC)) &&
|
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(total_size <
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CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
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return 0;
|
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}
|
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}
|
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}
|
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}
|
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cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB,
|
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sizeof(struct smb_t2_rsp) + 16);
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return rc;
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}
|
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int
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CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
|
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{
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NEGOTIATE_REQ *pSMB;
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NEGOTIATE_RSP *pSMBr;
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int rc = 0;
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int bytes_returned;
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int i;
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struct TCP_Server_Info *server;
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u16 count;
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unsigned int secFlags;
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u16 dialect;
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|
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if (ses->server)
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server = ses->server;
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else {
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rc = -EIO;
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return rc;
|
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}
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rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
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(void **) &pSMB, (void **) &pSMBr);
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if (rc)
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return rc;
|
|
|
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/* if any of auth flags (ie not sign or seal) are overriden use them */
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if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL)))
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secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */
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else /* if override flags set only sign/seal OR them with global auth */
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secFlags = extended_security | ses->overrideSecFlg;
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cFYI(1, ("secFlags 0x%x", secFlags));
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|
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pSMB->hdr.Mid = GetNextMid(server);
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pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
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|
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if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
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pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
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else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) {
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cFYI(1, ("Kerberos only mechanism, enable extended security"));
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pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
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}
|
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|
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count = 0;
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for (i = 0; i < CIFS_NUM_PROT; i++) {
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strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
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count += strlen(protocols[i].name) + 1;
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/* null at end of source and target buffers anyway */
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}
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pSMB->hdr.smb_buf_length += count;
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pSMB->ByteCount = cpu_to_le16(count);
|
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|
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rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
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(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
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if (rc != 0)
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goto neg_err_exit;
|
|
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dialect = le16_to_cpu(pSMBr->DialectIndex);
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cFYI(1, ("Dialect: %d", dialect));
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/* Check wct = 1 error case */
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if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) {
|
|
/* core returns wct = 1, but we do not ask for core - otherwise
|
|
small wct just comes when dialect index is -1 indicating we
|
|
could not negotiate a common dialect */
|
|
rc = -EOPNOTSUPP;
|
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goto neg_err_exit;
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
} else if ((pSMBr->hdr.WordCount == 13)
|
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&& ((dialect == LANMAN_PROT)
|
|
|| (dialect == LANMAN2_PROT))) {
|
|
__s16 tmp;
|
|
struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr;
|
|
|
|
if ((secFlags & CIFSSEC_MAY_LANMAN) ||
|
|
(secFlags & CIFSSEC_MAY_PLNTXT))
|
|
server->secType = LANMAN;
|
|
else {
|
|
cERROR(1, ("mount failed weak security disabled"
|
|
" in /proc/fs/cifs/SecurityFlags"));
|
|
rc = -EOPNOTSUPP;
|
|
goto neg_err_exit;
|
|
}
|
|
server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode);
|
|
server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
|
|
server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize),
|
|
(__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
|
|
server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs);
|
|
GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey);
|
|
/* even though we do not use raw we might as well set this
|
|
accurately, in case we ever find a need for it */
|
|
if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
|
|
server->max_rw = 0xFF00;
|
|
server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
|
|
} else {
|
|
server->max_rw = 0;/* do not need to use raw anyway */
|
|
server->capabilities = CAP_MPX_MODE;
|
|
}
|
|
tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
|
|
if (tmp == -1) {
|
|
/* OS/2 often does not set timezone therefore
|
|
* we must use server time to calc time zone.
|
|
* Could deviate slightly from the right zone.
|
|
* Smallest defined timezone difference is 15 minutes
|
|
* (i.e. Nepal). Rounding up/down is done to match
|
|
* this requirement.
|
|
*/
|
|
int val, seconds, remain, result;
|
|
struct timespec ts, utc;
|
|
utc = CURRENT_TIME;
|
|
ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date),
|
|
le16_to_cpu(rsp->SrvTime.Time));
|
|
cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d",
|
|
(int)ts.tv_sec, (int)utc.tv_sec,
|
|
(int)(utc.tv_sec - ts.tv_sec)));
|
|
val = (int)(utc.tv_sec - ts.tv_sec);
|
|
seconds = abs(val);
|
|
result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
|
|
remain = seconds % MIN_TZ_ADJ;
|
|
if (remain >= (MIN_TZ_ADJ / 2))
|
|
result += MIN_TZ_ADJ;
|
|
if (val < 0)
|
|
result = -result;
|
|
server->timeAdj = result;
|
|
} else {
|
|
server->timeAdj = (int)tmp;
|
|
server->timeAdj *= 60; /* also in seconds */
|
|
}
|
|
cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj));
|
|
|
|
|
|
/* BB get server time for time conversions and add
|
|
code to use it and timezone since this is not UTC */
|
|
|
|
if (rsp->EncryptionKeyLength ==
|
|
cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
|
|
memcpy(server->cryptKey, rsp->EncryptionKey,
|
|
CIFS_CRYPTO_KEY_SIZE);
|
|
} else if (server->secMode & SECMODE_PW_ENCRYPT) {
|
|
rc = -EIO; /* need cryptkey unless plain text */
|
|
goto neg_err_exit;
|
|
}
|
|
|
|
cFYI(1, ("LANMAN negotiated"));
|
|
/* we will not end up setting signing flags - as no signing
|
|
was in LANMAN and server did not return the flags on */
|
|
goto signing_check;
|
|
#else /* weak security disabled */
|
|
} else if (pSMBr->hdr.WordCount == 13) {
|
|
cERROR(1, ("mount failed, cifs module not built "
|
|
"with CIFS_WEAK_PW_HASH support"));
|
|
rc = -EOPNOTSUPP;
|
|
#endif /* WEAK_PW_HASH */
|
|
goto neg_err_exit;
|
|
} else if (pSMBr->hdr.WordCount != 17) {
|
|
/* unknown wct */
|
|
rc = -EOPNOTSUPP;
|
|
goto neg_err_exit;
|
|
}
|
|
/* else wct == 17 NTLM */
|
|
server->secMode = pSMBr->SecurityMode;
|
|
if ((server->secMode & SECMODE_USER) == 0)
|
|
cFYI(1, ("share mode security"));
|
|
|
|
if ((server->secMode & SECMODE_PW_ENCRYPT) == 0)
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0)
|
|
#endif /* CIFS_WEAK_PW_HASH */
|
|
cERROR(1, ("Server requests plain text password"
|
|
" but client support disabled"));
|
|
|
|
if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
|
|
server->secType = NTLMv2;
|
|
else if (secFlags & CIFSSEC_MAY_NTLM)
|
|
server->secType = NTLM;
|
|
else if (secFlags & CIFSSEC_MAY_NTLMV2)
|
|
server->secType = NTLMv2;
|
|
else if (secFlags & CIFSSEC_MAY_KRB5)
|
|
server->secType = Kerberos;
|
|
else if (secFlags & CIFSSEC_MAY_LANMAN)
|
|
server->secType = LANMAN;
|
|
/* #ifdef CONFIG_CIFS_EXPERIMENTAL
|
|
else if (secFlags & CIFSSEC_MAY_PLNTXT)
|
|
server->secType = ??
|
|
#endif */
|
|
else {
|
|
rc = -EOPNOTSUPP;
|
|
cERROR(1, ("Invalid security type"));
|
|
goto neg_err_exit;
|
|
}
|
|
/* else ... any others ...? */
|
|
|
|
/* one byte, so no need to convert this or EncryptionKeyLen from
|
|
little endian */
|
|
server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
|
|
/* probably no need to store and check maxvcs */
|
|
server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize),
|
|
(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
|
|
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
|
|
cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf));
|
|
GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
|
|
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
|
|
server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
|
|
server->timeAdj *= 60;
|
|
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
|
|
memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
|
|
CIFS_CRYPTO_KEY_SIZE);
|
|
} else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
|
|
&& (pSMBr->EncryptionKeyLength == 0)) {
|
|
/* decode security blob */
|
|
} else if (server->secMode & SECMODE_PW_ENCRYPT) {
|
|
rc = -EIO; /* no crypt key only if plain text pwd */
|
|
goto neg_err_exit;
|
|
}
|
|
|
|
/* BB might be helpful to save off the domain of server here */
|
|
|
|
if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
|
|
(server->capabilities & CAP_EXTENDED_SECURITY)) {
|
|
count = pSMBr->ByteCount;
|
|
if (count < 16) {
|
|
rc = -EIO;
|
|
goto neg_err_exit;
|
|
}
|
|
read_lock(&cifs_tcp_ses_lock);
|
|
if (server->srv_count > 1) {
|
|
read_unlock(&cifs_tcp_ses_lock);
|
|
if (memcmp(server->server_GUID,
|
|
pSMBr->u.extended_response.
|
|
GUID, 16) != 0) {
|
|
cFYI(1, ("server UID changed"));
|
|
memcpy(server->server_GUID,
|
|
pSMBr->u.extended_response.GUID,
|
|
16);
|
|
}
|
|
} else {
|
|
read_unlock(&cifs_tcp_ses_lock);
|
|
memcpy(server->server_GUID,
|
|
pSMBr->u.extended_response.GUID, 16);
|
|
}
|
|
|
|
if (count == 16) {
|
|
server->secType = RawNTLMSSP;
|
|
} else {
|
|
rc = decode_negTokenInit(pSMBr->u.extended_response.
|
|
SecurityBlob,
|
|
count - 16,
|
|
&server->secType);
|
|
if (rc == 1)
|
|
rc = 0;
|
|
else
|
|
rc = -EINVAL;
|
|
}
|
|
} else
|
|
server->capabilities &= ~CAP_EXTENDED_SECURITY;
|
|
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
signing_check:
|
|
#endif
|
|
if ((secFlags & CIFSSEC_MAY_SIGN) == 0) {
|
|
/* MUST_SIGN already includes the MAY_SIGN FLAG
|
|
so if this is zero it means that signing is disabled */
|
|
cFYI(1, ("Signing disabled"));
|
|
if (server->secMode & SECMODE_SIGN_REQUIRED) {
|
|
cERROR(1, ("Server requires "
|
|
"packet signing to be enabled in "
|
|
"/proc/fs/cifs/SecurityFlags."));
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
server->secMode &=
|
|
~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
|
|
} else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) {
|
|
/* signing required */
|
|
cFYI(1, ("Must sign - secFlags 0x%x", secFlags));
|
|
if ((server->secMode &
|
|
(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) {
|
|
cERROR(1,
|
|
("signing required but server lacks support"));
|
|
rc = -EOPNOTSUPP;
|
|
} else
|
|
server->secMode |= SECMODE_SIGN_REQUIRED;
|
|
} else {
|
|
/* signing optional ie CIFSSEC_MAY_SIGN */
|
|
if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
|
|
server->secMode &=
|
|
~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
|
|
}
|
|
|
|
neg_err_exit:
|
|
cifs_buf_release(pSMB);
|
|
|
|
cFYI(1, ("negprot rc %d", rc));
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
int rc = 0;
|
|
|
|
cFYI(1, ("In tree disconnect"));
|
|
|
|
/* BB: do we need to check this? These should never be NULL. */
|
|
if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
|
|
return -EIO;
|
|
|
|
/*
|
|
* No need to return error on this operation if tid invalidated and
|
|
* closed on server already e.g. due to tcp session crashing. Also,
|
|
* the tcon is no longer on the list, so no need to take lock before
|
|
* checking this.
|
|
*/
|
|
if (tcon->need_reconnect)
|
|
return 0;
|
|
|
|
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
|
|
(void **)&smb_buffer);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0);
|
|
if (rc)
|
|
cFYI(1, ("Tree disconnect failed %d", rc));
|
|
|
|
/* No need to return error on this operation if tid invalidated and
|
|
closed on server already e.g. due to tcp session crashing */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
|
|
{
|
|
LOGOFF_ANDX_REQ *pSMB;
|
|
int rc = 0;
|
|
|
|
cFYI(1, ("In SMBLogoff for session disconnect"));
|
|
|
|
/*
|
|
* BB: do we need to check validity of ses and server? They should
|
|
* always be valid since we have an active reference. If not, that
|
|
* should probably be a BUG()
|
|
*/
|
|
if (!ses || !ses->server)
|
|
return -EIO;
|
|
|
|
down(&ses->sesSem);
|
|
if (ses->need_reconnect)
|
|
goto session_already_dead; /* no need to send SMBlogoff if uid
|
|
already closed due to reconnect */
|
|
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
|
|
if (rc) {
|
|
up(&ses->sesSem);
|
|
return rc;
|
|
}
|
|
|
|
pSMB->hdr.Mid = GetNextMid(ses->server);
|
|
|
|
if (ses->server->secMode &
|
|
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
|
|
pSMB->AndXCommand = 0xFF;
|
|
rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);
|
|
session_already_dead:
|
|
up(&ses->sesSem);
|
|
|
|
/* if session dead then we do not need to do ulogoff,
|
|
since server closed smb session, no sense reporting
|
|
error */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
|
|
__u16 type, const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
struct unlink_psx_rq *pRqD;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cFYI(1, ("In POSIX delete"));
|
|
PsxDelete:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB add path length overrun check */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = 0; /* BB double check this with jra */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
/* Setup pointer to Request Data (inode type) */
|
|
pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset);
|
|
pRqD->type = cpu_to_le16(type);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq);
|
|
|
|
pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
|
|
pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("Posix delete returned %d", rc));
|
|
cifs_buf_release(pSMB);
|
|
|
|
cifs_stats_inc(&tcon->num_deletes);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto PsxDelete;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
DELETE_FILE_REQ *pSMB = NULL;
|
|
DELETE_FILE_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
DelFileRetry:
|
|
rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->fileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->hdr.smb_buf_length += name_len + 1;
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_deletes);
|
|
if (rc)
|
|
cFYI(1, ("Error in RMFile = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto DelFileRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
DELETE_DIRECTORY_REQ *pSMB = NULL;
|
|
DELETE_DIRECTORY_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cFYI(1, ("In CIFSSMBRmDir"));
|
|
RmDirRetry:
|
|
rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(dirName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->DirName, dirName, name_len);
|
|
}
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->hdr.smb_buf_length += name_len + 1;
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_rmdirs);
|
|
if (rc)
|
|
cFYI(1, ("Error in RMDir = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto RmDirRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
|
|
const char *name, const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
CREATE_DIRECTORY_REQ *pSMB = NULL;
|
|
CREATE_DIRECTORY_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cFYI(1, ("In CIFSSMBMkDir"));
|
|
MkDirRetry:
|
|
rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->DirName, name, name_len);
|
|
}
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->hdr.smb_buf_length += name_len + 1;
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_mkdirs);
|
|
if (rc)
|
|
cFYI(1, ("Error in Mkdir = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto MkDirRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags,
|
|
__u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData,
|
|
__u32 *pOplock, const char *name,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
OPEN_PSX_REQ *pdata;
|
|
OPEN_PSX_RSP *psx_rsp;
|
|
|
|
cFYI(1, ("In POSIX Create"));
|
|
PsxCreat:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, name,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, name, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(OPEN_PSX_REQ);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset);
|
|
pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
|
|
pdata->Permissions = cpu_to_le64(mode);
|
|
pdata->PosixOpenFlags = cpu_to_le32(posix_flags);
|
|
pdata->OpenFlags = cpu_to_le32(*pOplock);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Posix create returned %d", rc));
|
|
goto psx_create_err;
|
|
}
|
|
|
|
cFYI(1, ("copying inode info"));
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) {
|
|
rc = -EIO; /* bad smb */
|
|
goto psx_create_err;
|
|
}
|
|
|
|
/* copy return information to pRetData */
|
|
psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol
|
|
+ le16_to_cpu(pSMBr->t2.DataOffset));
|
|
|
|
*pOplock = le16_to_cpu(psx_rsp->OplockFlags);
|
|
if (netfid)
|
|
*netfid = psx_rsp->Fid; /* cifs fid stays in le */
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction)
|
|
*pOplock |= CIFS_CREATE_ACTION;
|
|
/* check to make sure response data is there */
|
|
if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) {
|
|
pRetData->Type = cpu_to_le32(-1); /* unknown */
|
|
cFYI(DBG2, ("unknown type"));
|
|
} else {
|
|
if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP)
|
|
+ sizeof(FILE_UNIX_BASIC_INFO)) {
|
|
cERROR(1, ("Open response data too small"));
|
|
pRetData->Type = cpu_to_le32(-1);
|
|
goto psx_create_err;
|
|
}
|
|
memcpy((char *) pRetData,
|
|
(char *)psx_rsp + sizeof(OPEN_PSX_RSP),
|
|
sizeof(FILE_UNIX_BASIC_INFO));
|
|
}
|
|
|
|
psx_create_err:
|
|
cifs_buf_release(pSMB);
|
|
|
|
cifs_stats_inc(&tcon->num_mkdirs);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto PsxCreat;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static __u16 convert_disposition(int disposition)
|
|
{
|
|
__u16 ofun = 0;
|
|
|
|
switch (disposition) {
|
|
case FILE_SUPERSEDE:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
|
|
break;
|
|
case FILE_OPEN:
|
|
ofun = SMBOPEN_OAPPEND;
|
|
break;
|
|
case FILE_CREATE:
|
|
ofun = SMBOPEN_OCREATE;
|
|
break;
|
|
case FILE_OPEN_IF:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
|
|
break;
|
|
case FILE_OVERWRITE:
|
|
ofun = SMBOPEN_OTRUNC;
|
|
break;
|
|
case FILE_OVERWRITE_IF:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
|
|
break;
|
|
default:
|
|
cFYI(1, ("unknown disposition %d", disposition));
|
|
ofun = SMBOPEN_OAPPEND; /* regular open */
|
|
}
|
|
return ofun;
|
|
}
|
|
|
|
static int
|
|
access_flags_to_smbopen_mode(const int access_flags)
|
|
{
|
|
int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE);
|
|
|
|
if (masked_flags == GENERIC_READ)
|
|
return SMBOPEN_READ;
|
|
else if (masked_flags == GENERIC_WRITE)
|
|
return SMBOPEN_WRITE;
|
|
|
|
/* just go for read/write */
|
|
return SMBOPEN_READWRITE;
|
|
}
|
|
|
|
int
|
|
SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fileName, const int openDisposition,
|
|
const int access_flags, const int create_options, __u16 *netfid,
|
|
int *pOplock, FILE_ALL_INFO *pfile_info,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = -EACCES;
|
|
OPENX_REQ *pSMB = NULL;
|
|
OPENX_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 count;
|
|
|
|
OldOpenRetry:
|
|
rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
count = 1; /* account for one byte pad to word boundary */
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
|
|
fileName, PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
count = 0; /* no pad */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
if (*pOplock & REQ_OPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
|
|
else if (*pOplock & REQ_BATCHOPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
|
|
|
|
pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
|
|
pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags));
|
|
pSMB->Mode |= cpu_to_le16(0x40); /* deny none */
|
|
/* set file as system file if special file such
|
|
as fifo and server expecting SFU style and
|
|
no Unix extensions */
|
|
|
|
if (create_options & CREATE_OPTION_SPECIAL)
|
|
pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
|
|
else /* BB FIXME BB */
|
|
pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/);
|
|
|
|
if (create_options & CREATE_OPTION_READONLY)
|
|
pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY);
|
|
|
|
/* BB FIXME BB */
|
|
/* pSMB->CreateOptions = cpu_to_le32(create_options &
|
|
CREATE_OPTIONS_MASK); */
|
|
/* BB FIXME END BB */
|
|
|
|
pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
|
|
pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
|
|
count += name_len;
|
|
pSMB->hdr.smb_buf_length += count;
|
|
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
/* long_op set to 1 to allow for oplock break timeouts */
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP);
|
|
cifs_stats_inc(&tcon->num_opens);
|
|
if (rc) {
|
|
cFYI(1, ("Error in Open = %d", rc));
|
|
} else {
|
|
/* BB verify if wct == 15 */
|
|
|
|
/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/
|
|
|
|
*netfid = pSMBr->Fid; /* cifs fid stays in le */
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
/* BB FIXME BB */
|
|
/* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
|
|
*pOplock |= CIFS_CREATE_ACTION; */
|
|
/* BB FIXME END */
|
|
|
|
if (pfile_info) {
|
|
pfile_info->CreationTime = 0; /* BB convert CreateTime*/
|
|
pfile_info->LastAccessTime = 0; /* BB fixme */
|
|
pfile_info->LastWriteTime = 0; /* BB fixme */
|
|
pfile_info->ChangeTime = 0; /* BB fixme */
|
|
pfile_info->Attributes =
|
|
cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes));
|
|
/* the file_info buf is endian converted by caller */
|
|
pfile_info->AllocationSize =
|
|
cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
|
|
pfile_info->EndOfFile = pfile_info->AllocationSize;
|
|
pfile_info->NumberOfLinks = cpu_to_le32(1);
|
|
pfile_info->DeletePending = 0;
|
|
}
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto OldOpenRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fileName, const int openDisposition,
|
|
const int access_flags, const int create_options, __u16 *netfid,
|
|
int *pOplock, FILE_ALL_INFO *pfile_info,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = -EACCES;
|
|
OPEN_REQ *pSMB = NULL;
|
|
OPEN_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 count;
|
|
|
|
openRetry:
|
|
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
count = 1; /* account for one byte pad to word boundary */
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
|
|
fileName, PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->NameLength = cpu_to_le16(name_len);
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
count = 0; /* no pad */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
pSMB->NameLength = cpu_to_le16(name_len);
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
if (*pOplock & REQ_OPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
|
|
else if (*pOplock & REQ_BATCHOPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
|
|
pSMB->DesiredAccess = cpu_to_le32(access_flags);
|
|
pSMB->AllocationSize = 0;
|
|
/* set file as system file if special file such
|
|
as fifo and server expecting SFU style and
|
|
no Unix extensions */
|
|
if (create_options & CREATE_OPTION_SPECIAL)
|
|
pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
|
|
else
|
|
pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
|
|
|
|
/* XP does not handle ATTR_POSIX_SEMANTICS */
|
|
/* but it helps speed up case sensitive checks for other
|
|
servers such as Samba */
|
|
if (tcon->ses->capabilities & CAP_UNIX)
|
|
pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
|
|
|
|
if (create_options & CREATE_OPTION_READONLY)
|
|
pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
|
|
|
|
pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
|
|
pSMB->CreateDisposition = cpu_to_le32(openDisposition);
|
|
pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
|
|
/* BB Expirement with various impersonation levels and verify */
|
|
pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
|
|
pSMB->SecurityFlags =
|
|
SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
|
|
|
|
count += name_len;
|
|
pSMB->hdr.smb_buf_length += count;
|
|
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
/* long_op set to 1 to allow for oplock break timeouts */
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP);
|
|
cifs_stats_inc(&tcon->num_opens);
|
|
if (rc) {
|
|
cFYI(1, ("Error in Open = %d", rc));
|
|
} else {
|
|
*pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
|
|
*netfid = pSMBr->Fid; /* cifs fid stays in le */
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
|
|
*pOplock |= CIFS_CREATE_ACTION;
|
|
if (pfile_info) {
|
|
memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
|
|
36 /* CreationTime to Attributes */);
|
|
/* the file_info buf is endian converted by caller */
|
|
pfile_info->AllocationSize = pSMBr->AllocationSize;
|
|
pfile_info->EndOfFile = pSMBr->EndOfFile;
|
|
pfile_info->NumberOfLinks = cpu_to_le32(1);
|
|
pfile_info->DeletePending = 0;
|
|
}
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto openRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
|
|
const unsigned int count, const __u64 lseek, unsigned int *nbytes,
|
|
char **buf, int *pbuf_type)
|
|
{
|
|
int rc = -EACCES;
|
|
READ_REQ *pSMB = NULL;
|
|
READ_RSP *pSMBr = NULL;
|
|
char *pReadData = NULL;
|
|
int wct;
|
|
int resp_buf_type = 0;
|
|
struct kvec iov[1];
|
|
|
|
cFYI(1, ("Reading %d bytes on fid %d", count, netfid));
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES)
|
|
wct = 12;
|
|
else {
|
|
wct = 10; /* old style read */
|
|
if ((lseek >> 32) > 0) {
|
|
/* can not handle this big offset for old */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
*nbytes = 0;
|
|
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
|
|
if (wct == 12)
|
|
pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
|
|
|
|
pSMB->Remaining = 0;
|
|
pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
|
|
pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
|
|
if (wct == 12)
|
|
pSMB->ByteCount = 0; /* no need to do le conversion since 0 */
|
|
else {
|
|
/* old style read */
|
|
struct smb_com_readx_req *pSMBW =
|
|
(struct smb_com_readx_req *)pSMB;
|
|
pSMBW->ByteCount = 0;
|
|
}
|
|
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
|
|
&resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR);
|
|
cifs_stats_inc(&tcon->num_reads);
|
|
pSMBr = (READ_RSP *)iov[0].iov_base;
|
|
if (rc) {
|
|
cERROR(1, ("Send error in read = %d", rc));
|
|
} else {
|
|
int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
|
|
data_length = data_length << 16;
|
|
data_length += le16_to_cpu(pSMBr->DataLength);
|
|
*nbytes = data_length;
|
|
|
|
/*check that DataLength would not go beyond end of SMB */
|
|
if ((data_length > CIFSMaxBufSize)
|
|
|| (data_length > count)) {
|
|
cFYI(1, ("bad length %d for count %d",
|
|
data_length, count));
|
|
rc = -EIO;
|
|
*nbytes = 0;
|
|
} else {
|
|
pReadData = (char *) (&pSMBr->hdr.Protocol) +
|
|
le16_to_cpu(pSMBr->DataOffset);
|
|
/* if (rc = copy_to_user(buf, pReadData, data_length)) {
|
|
cERROR(1,("Faulting on read rc = %d",rc));
|
|
rc = -EFAULT;
|
|
}*/ /* can not use copy_to_user when using page cache*/
|
|
if (*buf)
|
|
memcpy(*buf, pReadData, data_length);
|
|
}
|
|
}
|
|
|
|
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
|
|
if (*buf) {
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER)
|
|
cifs_small_buf_release(iov[0].iov_base);
|
|
else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
cifs_buf_release(iov[0].iov_base);
|
|
} else if (resp_buf_type != CIFS_NO_BUFFER) {
|
|
/* return buffer to caller to free */
|
|
*buf = iov[0].iov_base;
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER)
|
|
*pbuf_type = CIFS_SMALL_BUFFER;
|
|
else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
*pbuf_type = CIFS_LARGE_BUFFER;
|
|
} /* else no valid buffer on return - leave as null */
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
|
|
const int netfid, const unsigned int count,
|
|
const __u64 offset, unsigned int *nbytes, const char *buf,
|
|
const char __user *ubuf, const int long_op)
|
|
{
|
|
int rc = -EACCES;
|
|
WRITE_REQ *pSMB = NULL;
|
|
WRITE_RSP *pSMBr = NULL;
|
|
int bytes_returned, wct;
|
|
__u32 bytes_sent;
|
|
__u16 byte_count;
|
|
|
|
/* cFYI(1, ("write at %lld %d bytes", offset, count));*/
|
|
if (tcon->ses == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES)
|
|
wct = 14;
|
|
else {
|
|
wct = 12;
|
|
if ((offset >> 32) > 0) {
|
|
/* can not handle big offset for old srv */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
|
if (wct == 14)
|
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
|
|
|
pSMB->Reserved = 0xFFFFFFFF;
|
|
pSMB->WriteMode = 0;
|
|
pSMB->Remaining = 0;
|
|
|
|
/* Can increase buffer size if buffer is big enough in some cases ie we
|
|
can send more if LARGE_WRITE_X capability returned by the server and if
|
|
our buffer is big enough or if we convert to iovecs on socket writes
|
|
and eliminate the copy to the CIFS buffer */
|
|
if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
|
|
bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
|
|
} else {
|
|
bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
|
|
& ~0xFF;
|
|
}
|
|
|
|
if (bytes_sent > count)
|
|
bytes_sent = count;
|
|
pSMB->DataOffset =
|
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
|
|
if (buf)
|
|
memcpy(pSMB->Data, buf, bytes_sent);
|
|
else if (ubuf) {
|
|
if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) {
|
|
cifs_buf_release(pSMB);
|
|
return -EFAULT;
|
|
}
|
|
} else if (count != 0) {
|
|
/* No buffer */
|
|
cifs_buf_release(pSMB);
|
|
return -EINVAL;
|
|
} /* else setting file size with write of zero bytes */
|
|
if (wct == 14)
|
|
byte_count = bytes_sent + 1; /* pad */
|
|
else /* wct == 12 */
|
|
byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
|
|
|
|
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
|
|
pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
|
|
if (wct == 14)
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
else { /* old style write has byte count 4 bytes earlier
|
|
so 4 bytes pad */
|
|
struct smb_com_writex_req *pSMBW =
|
|
(struct smb_com_writex_req *)pSMB;
|
|
pSMBW->ByteCount = cpu_to_le16(byte_count);
|
|
}
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, long_op);
|
|
cifs_stats_inc(&tcon->num_writes);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in write = %d", rc));
|
|
*nbytes = 0;
|
|
} else {
|
|
*nbytes = le16_to_cpu(pSMBr->CountHigh);
|
|
*nbytes = (*nbytes) << 16;
|
|
*nbytes += le16_to_cpu(pSMBr->Count);
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
|
|
const int netfid, const unsigned int count,
|
|
const __u64 offset, unsigned int *nbytes, struct kvec *iov,
|
|
int n_vec, const int long_op)
|
|
{
|
|
int rc = -EACCES;
|
|
WRITE_REQ *pSMB = NULL;
|
|
int wct;
|
|
int smb_hdr_len;
|
|
int resp_buf_type = 0;
|
|
|
|
*nbytes = 0;
|
|
|
|
cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count));
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) {
|
|
wct = 14;
|
|
} else {
|
|
wct = 12;
|
|
if ((offset >> 32) > 0) {
|
|
/* can not handle big offset for old srv */
|
|
return -EIO;
|
|
}
|
|
}
|
|
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
|
if (wct == 14)
|
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
|
pSMB->Reserved = 0xFFFFFFFF;
|
|
pSMB->WriteMode = 0;
|
|
pSMB->Remaining = 0;
|
|
|
|
pSMB->DataOffset =
|
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
|
|
|
|
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
|
|
pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
|
|
smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */
|
|
if (wct == 14)
|
|
pSMB->hdr.smb_buf_length += count+1;
|
|
else /* wct == 12 */
|
|
pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */
|
|
if (wct == 14)
|
|
pSMB->ByteCount = cpu_to_le16(count + 1);
|
|
else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
|
|
struct smb_com_writex_req *pSMBW =
|
|
(struct smb_com_writex_req *)pSMB;
|
|
pSMBW->ByteCount = cpu_to_le16(count + 5);
|
|
}
|
|
iov[0].iov_base = pSMB;
|
|
if (wct == 14)
|
|
iov[0].iov_len = smb_hdr_len + 4;
|
|
else /* wct == 12 pad bigger by four bytes */
|
|
iov[0].iov_len = smb_hdr_len + 8;
|
|
|
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type,
|
|
long_op);
|
|
cifs_stats_inc(&tcon->num_writes);
|
|
if (rc) {
|
|
cFYI(1, ("Send error Write2 = %d", rc));
|
|
} else if (resp_buf_type == 0) {
|
|
/* presumably this can not happen, but best to be safe */
|
|
rc = -EIO;
|
|
} else {
|
|
WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base;
|
|
*nbytes = le16_to_cpu(pSMBr->CountHigh);
|
|
*nbytes = (*nbytes) << 16;
|
|
*nbytes += le16_to_cpu(pSMBr->Count);
|
|
}
|
|
|
|
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER)
|
|
cifs_small_buf_release(iov[0].iov_base);
|
|
else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
cifs_buf_release(iov[0].iov_base);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
|
|
const __u16 smb_file_id, const __u64 len,
|
|
const __u64 offset, const __u32 numUnlock,
|
|
const __u32 numLock, const __u8 lockType, const bool waitFlag)
|
|
{
|
|
int rc = 0;
|
|
LOCK_REQ *pSMB = NULL;
|
|
/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */
|
|
int bytes_returned;
|
|
int timeout = 0;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock));
|
|
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
|
|
timeout = CIFS_ASYNC_OP; /* no response expected */
|
|
pSMB->Timeout = 0;
|
|
} else if (waitFlag) {
|
|
timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
|
|
pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
|
|
} else {
|
|
pSMB->Timeout = 0;
|
|
}
|
|
|
|
pSMB->NumberOfLocks = cpu_to_le16(numLock);
|
|
pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
|
|
pSMB->LockType = lockType;
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = smb_file_id; /* netfid stays le */
|
|
|
|
if ((numLock != 0) || (numUnlock != 0)) {
|
|
pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
|
|
/* BB where to store pid high? */
|
|
pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
|
|
pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
|
|
pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
|
|
pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
|
|
count = sizeof(LOCKING_ANDX_RANGE);
|
|
} else {
|
|
/* oplock break */
|
|
count = 0;
|
|
}
|
|
pSMB->hdr.smb_buf_length += count;
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
if (waitFlag) {
|
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMB, &bytes_returned);
|
|
cifs_small_buf_release(pSMB);
|
|
} else {
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB,
|
|
timeout);
|
|
/* SMB buffer freed by function above */
|
|
}
|
|
cifs_stats_inc(&tcon->num_locks);
|
|
if (rc)
|
|
cFYI(1, ("Send error in Lock = %d", rc));
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
|
|
const __u16 smb_file_id, const int get_flag, const __u64 len,
|
|
struct file_lock *pLockData, const __u16 lock_type,
|
|
const bool waitFlag)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
|
|
struct cifs_posix_lock *parm_data;
|
|
int rc = 0;
|
|
int timeout = 0;
|
|
int bytes_returned = 0;
|
|
int resp_buf_type = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
struct kvec iov[1];
|
|
|
|
cFYI(1, ("Posix Lock"));
|
|
|
|
if (pLockData == NULL)
|
|
return -EINVAL;
|
|
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
count = sizeof(struct cifs_posix_lock);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
if (get_flag)
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
else
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
parm_data = (struct cifs_posix_lock *)
|
|
(((char *) &pSMB->hdr.Protocol) + offset);
|
|
|
|
parm_data->lock_type = cpu_to_le16(lock_type);
|
|
if (waitFlag) {
|
|
timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
|
|
parm_data->lock_flags = cpu_to_le16(1);
|
|
pSMB->Timeout = cpu_to_le32(-1);
|
|
} else
|
|
pSMB->Timeout = 0;
|
|
|
|
parm_data->pid = cpu_to_le32(current->tgid);
|
|
parm_data->start = cpu_to_le64(pLockData->fl_start);
|
|
parm_data->length = cpu_to_le64(len); /* normalize negative numbers */
|
|
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = smb_file_id;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
if (waitFlag) {
|
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned);
|
|
} else {
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
|
|
&resp_buf_type, timeout);
|
|
pSMB = NULL; /* request buf already freed by SendReceive2. Do
|
|
not try to free it twice below on exit */
|
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base;
|
|
}
|
|
|
|
if (rc) {
|
|
cFYI(1, ("Send error in Posix Lock = %d", rc));
|
|
} else if (get_flag) {
|
|
/* lock structure can be returned on get */
|
|
__u16 data_offset;
|
|
__u16 data_count;
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) {
|
|
rc = -EIO; /* bad smb */
|
|
goto plk_err_exit;
|
|
}
|
|
data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
data_count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
if (data_count < sizeof(struct cifs_posix_lock)) {
|
|
rc = -EIO;
|
|
goto plk_err_exit;
|
|
}
|
|
parm_data = (struct cifs_posix_lock *)
|
|
((char *)&pSMBr->hdr.Protocol + data_offset);
|
|
if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
|
|
pLockData->fl_type = F_UNLCK;
|
|
}
|
|
|
|
plk_err_exit:
|
|
if (pSMB)
|
|
cifs_small_buf_release(pSMB);
|
|
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER)
|
|
cifs_small_buf_release(iov[0].iov_base);
|
|
else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
cifs_buf_release(iov[0].iov_base);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
|
|
{
|
|
int rc = 0;
|
|
CLOSE_REQ *pSMB = NULL;
|
|
cFYI(1, ("In CIFSSMBClose"));
|
|
|
|
/* do not retry on dead session on close */
|
|
rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
|
|
if (rc == -EAGAIN)
|
|
return 0;
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = (__u16) smb_file_id;
|
|
pSMB->LastWriteTime = 0xFFFFFFFF;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
cifs_stats_inc(&tcon->num_closes);
|
|
if (rc) {
|
|
if (rc != -EINTR) {
|
|
/* EINTR is expected when user ctl-c to kill app */
|
|
cERROR(1, ("Send error in Close = %d", rc));
|
|
}
|
|
}
|
|
|
|
/* Since session is dead, file will be closed on server already */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBFlush(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
|
|
{
|
|
int rc = 0;
|
|
FLUSH_REQ *pSMB = NULL;
|
|
cFYI(1, ("In CIFSSMBFlush"));
|
|
|
|
rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = (__u16) smb_file_id;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
cifs_stats_inc(&tcon->num_flushes);
|
|
if (rc)
|
|
cERROR(1, ("Send error in Flush = %d", rc));
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
RENAME_REQ *pSMB = NULL;
|
|
RENAME_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In CIFSSMBRename"));
|
|
renameRetry:
|
|
rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->OldFileName[name_len] = 0x04; /* pad */
|
|
/* protocol requires ASCII signature byte on Unicode string */
|
|
pSMB->OldFileName[name_len + 1] = 0x00;
|
|
name_len2 =
|
|
cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
|
|
toName, PATH_MAX, nls_codepage, remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, fromName, name_len);
|
|
name_len2 = strnlen(toName, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2;
|
|
pSMB->hdr.smb_buf_length += count;
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_renames);
|
|
if (rc)
|
|
cFYI(1, ("Send error in rename = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto renameRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
|
|
int netfid, const char *target_name,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
|
|
struct set_file_rename *rename_info;
|
|
char *data_offset;
|
|
char dummy_string[30];
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int len_of_str;
|
|
__u16 params, param_offset, offset, count, byte_count;
|
|
|
|
cFYI(1, ("Rename to File by handle"));
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
rename_info = (struct set_file_rename *) data_offset;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
/* construct random name ".cifs_tmp<inodenum><mid>" */
|
|
rename_info->overwrite = cpu_to_le32(1);
|
|
rename_info->root_fid = 0;
|
|
/* unicode only call */
|
|
if (target_name == NULL) {
|
|
sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid);
|
|
len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
|
|
dummy_string, 24, nls_codepage, remap);
|
|
} else {
|
|
len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
|
|
target_name, PATH_MAX, nls_codepage,
|
|
remap);
|
|
}
|
|
rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
|
|
count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str);
|
|
byte_count += count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->Fid = netfid;
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&pTcon->num_t2renames);
|
|
if (rc)
|
|
cFYI(1, ("Send error in Rename (by file handle) = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName,
|
|
const __u16 target_tid, const char *toName, const int flags,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
COPY_REQ *pSMB = NULL;
|
|
COPY_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In CIFSSMBCopy"));
|
|
copyRetry:
|
|
rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->Tid2 = target_tid;
|
|
|
|
pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName,
|
|
fromName, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->OldFileName[name_len] = 0x04; /* pad */
|
|
/* protocol requires ASCII signature byte on Unicode string */
|
|
pSMB->OldFileName[name_len + 1] = 0x00;
|
|
name_len2 =
|
|
cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
|
|
toName, PATH_MAX, nls_codepage, remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, fromName, name_len);
|
|
name_len2 = strnlen(toName, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2;
|
|
pSMB->hdr.smb_buf_length += count;
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in copy = %d with %d files copied",
|
|
rc, le16_to_cpu(pSMBr->CopyCount)));
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto copyRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
char *data_offset;
|
|
int name_len;
|
|
int name_len_target;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cFYI(1, ("In Symlink Unix style"));
|
|
createSymLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX
|
|
/* find define for this maxpathcomponent */
|
|
, nls_codepage);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fromName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len_target =
|
|
cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX
|
|
/* find define for this maxpathcomponent */
|
|
, nls_codepage);
|
|
name_len_target++; /* trailing null */
|
|
name_len_target *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len_target = strnlen(toName, PATH_MAX);
|
|
name_len_target++; /* trailing null */
|
|
strncpy(data_offset, toName, name_len_target);
|
|
}
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max on data count below from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + name_len_target;
|
|
pSMB->DataCount = cpu_to_le16(name_len_target);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_symlinks);
|
|
if (rc)
|
|
cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto createSymLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
char *data_offset;
|
|
int name_len;
|
|
int name_len_target;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cFYI(1, ("In Create Hard link Unix style"));
|
|
createHardLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(toName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, toName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len_target =
|
|
cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
|
|
nls_codepage, remap);
|
|
name_len_target++; /* trailing null */
|
|
name_len_target *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len_target = strnlen(fromName, PATH_MAX);
|
|
name_len_target++; /* trailing null */
|
|
strncpy(data_offset, fromName, name_len_target);
|
|
}
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max on data count below from sess*/
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + name_len_target;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->DataCount = cpu_to_le16(name_len_target);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_hardlinks);
|
|
if (rc)
|
|
cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto createHardLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
NT_RENAME_REQ *pSMB = NULL;
|
|
RENAME_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
|
|
cFYI(1, ("In CIFSCreateHardLink"));
|
|
winCreateHardLinkRetry:
|
|
|
|
rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
|
|
pSMB->ClusterCount = 0;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
/* protocol specifies ASCII buffer format (0x04) for unicode */
|
|
pSMB->OldFileName[name_len] = 0x04;
|
|
pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
|
|
name_len2 =
|
|
cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
|
|
toName, PATH_MAX, nls_codepage, remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, fromName, name_len);
|
|
name_len2 = strnlen(toName, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* string type byte */ + name_len + name_len2;
|
|
pSMB->hdr.smb_buf_length += count;
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_hardlinks);
|
|
if (rc)
|
|
cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto winCreateHardLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName, char **symlinkinfo,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
/* SMB_QUERY_FILE_UNIX_LINK */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
char *data_start;
|
|
|
|
cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));
|
|
|
|
querySymLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifs_strtoUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
|
|
} else {
|
|
/* decode response */
|
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
/* BB also check enough total bytes returned */
|
|
if (rc || (pSMBr->ByteCount < 2))
|
|
rc = -EIO;
|
|
else {
|
|
bool is_unicode;
|
|
u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
|
|
data_start = ((char *) &pSMBr->hdr.Protocol) +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
is_unicode = true;
|
|
else
|
|
is_unicode = false;
|
|
|
|
/* BB FIXME investigate remapping reserved chars here */
|
|
*symlinkinfo = cifs_strndup_from_ucs(data_start, count,
|
|
is_unicode, nls_codepage);
|
|
if (!symlinkinfo)
|
|
rc = -ENOMEM;
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto querySymLinkRetry;
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_EXPERIMENTAL
|
|
/* Initialize NT TRANSACT SMB into small smb request buffer.
|
|
This assumes that all NT TRANSACTS that we init here have
|
|
total parm and data under about 400 bytes (to fit in small cifs
|
|
buffer size), which is the case so far, it easily fits. NB:
|
|
Setup words themselves and ByteCount
|
|
MaxSetupCount (size of returned setup area) and
|
|
MaxParameterCount (returned parms size) must be set by caller */
|
|
static int
|
|
smb_init_nttransact(const __u16 sub_command, const int setup_count,
|
|
const int parm_len, struct cifsTconInfo *tcon,
|
|
void **ret_buf)
|
|
{
|
|
int rc;
|
|
__u32 temp_offset;
|
|
struct smb_com_ntransact_req *pSMB;
|
|
|
|
rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
|
|
(void **)&pSMB);
|
|
if (rc)
|
|
return rc;
|
|
*ret_buf = (void *)pSMB;
|
|
pSMB->Reserved = 0;
|
|
pSMB->TotalParameterCount = cpu_to_le32(parm_len);
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->DataCount = pSMB->TotalDataCount;
|
|
temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
|
|
(setup_count * 2) - 4 /* for rfc1001 length itself */;
|
|
pSMB->ParameterOffset = cpu_to_le32(temp_offset);
|
|
pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
|
|
pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
|
|
pSMB->SubCommand = cpu_to_le16(sub_command);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
validate_ntransact(char *buf, char **ppparm, char **ppdata,
|
|
__u32 *pparmlen, __u32 *pdatalen)
|
|
{
|
|
char *end_of_smb;
|
|
__u32 data_count, data_offset, parm_count, parm_offset;
|
|
struct smb_com_ntransact_rsp *pSMBr;
|
|
|
|
*pdatalen = 0;
|
|
*pparmlen = 0;
|
|
|
|
if (buf == NULL)
|
|
return -EINVAL;
|
|
|
|
pSMBr = (struct smb_com_ntransact_rsp *)buf;
|
|
|
|
/* ByteCount was converted from little endian in SendReceive */
|
|
end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount +
|
|
(char *)&pSMBr->ByteCount;
|
|
|
|
data_offset = le32_to_cpu(pSMBr->DataOffset);
|
|
data_count = le32_to_cpu(pSMBr->DataCount);
|
|
parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
|
|
parm_count = le32_to_cpu(pSMBr->ParameterCount);
|
|
|
|
*ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
|
|
*ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
|
|
|
|
/* should we also check that parm and data areas do not overlap? */
|
|
if (*ppparm > end_of_smb) {
|
|
cFYI(1, ("parms start after end of smb"));
|
|
return -EINVAL;
|
|
} else if (parm_count + *ppparm > end_of_smb) {
|
|
cFYI(1, ("parm end after end of smb"));
|
|
return -EINVAL;
|
|
} else if (*ppdata > end_of_smb) {
|
|
cFYI(1, ("data starts after end of smb"));
|
|
return -EINVAL;
|
|
} else if (data_count + *ppdata > end_of_smb) {
|
|
cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p",
|
|
*ppdata, data_count, (data_count + *ppdata),
|
|
end_of_smb, pSMBr));
|
|
return -EINVAL;
|
|
} else if (parm_count + data_count > pSMBr->ByteCount) {
|
|
cFYI(1, ("parm count and data count larger than SMB"));
|
|
return -EINVAL;
|
|
}
|
|
*pdatalen = data_count;
|
|
*pparmlen = parm_count;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
char *symlinkinfo, const int buflen, __u16 fid,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
struct smb_com_transaction_ioctl_req *pSMB;
|
|
struct smb_com_transaction_ioctl_rsp *pSMBr;
|
|
|
|
cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->TotalParameterCount = 0 ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le32(2);
|
|
/* BB find exact data count max from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 4;
|
|
pSMB->Reserved = 0;
|
|
pSMB->ParameterOffset = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 4;
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
|
|
pSMB->IsFsctl = 1; /* FSCTL */
|
|
pSMB->IsRootFlag = 0;
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->ByteCount = 0;
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
|
|
} else { /* decode response */
|
|
__u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
|
|
__u32 data_count = le32_to_cpu(pSMBr->DataCount);
|
|
if ((pSMBr->ByteCount < 2) || (data_offset > 512)) {
|
|
/* BB also check enough total bytes returned */
|
|
rc = -EIO; /* bad smb */
|
|
goto qreparse_out;
|
|
}
|
|
if (data_count && (data_count < 2048)) {
|
|
char *end_of_smb = 2 /* sizeof byte count */ +
|
|
pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
|
|
|
|
struct reparse_data *reparse_buf =
|
|
(struct reparse_data *)
|
|
((char *)&pSMBr->hdr.Protocol
|
|
+ data_offset);
|
|
if ((char *)reparse_buf >= end_of_smb) {
|
|
rc = -EIO;
|
|
goto qreparse_out;
|
|
}
|
|
if ((reparse_buf->LinkNamesBuf +
|
|
reparse_buf->TargetNameOffset +
|
|
reparse_buf->TargetNameLen) > end_of_smb) {
|
|
cFYI(1, ("reparse buf beyond SMB"));
|
|
rc = -EIO;
|
|
goto qreparse_out;
|
|
}
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
cifs_from_ucs2(symlinkinfo, (__le16 *)
|
|
(reparse_buf->LinkNamesBuf +
|
|
reparse_buf->TargetNameOffset),
|
|
buflen,
|
|
reparse_buf->TargetNameLen,
|
|
nls_codepage, 0);
|
|
} else { /* ASCII names */
|
|
strncpy(symlinkinfo,
|
|
reparse_buf->LinkNamesBuf +
|
|
reparse_buf->TargetNameOffset,
|
|
min_t(const int, buflen,
|
|
reparse_buf->TargetNameLen));
|
|
}
|
|
} else {
|
|
rc = -EIO;
|
|
cFYI(1, ("Invalid return data count on "
|
|
"get reparse info ioctl"));
|
|
}
|
|
symlinkinfo[buflen] = 0; /* just in case so the caller
|
|
does not go off the end of the buffer */
|
|
cFYI(1, ("readlink result - %s", symlinkinfo));
|
|
}
|
|
|
|
qreparse_out:
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
#endif /* CIFS_EXPERIMENTAL */
|
|
|
|
#ifdef CONFIG_CIFS_POSIX
|
|
|
|
/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
|
|
static void cifs_convert_ace(posix_acl_xattr_entry *ace,
|
|
struct cifs_posix_ace *cifs_ace)
|
|
{
|
|
/* u8 cifs fields do not need le conversion */
|
|
ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm);
|
|
ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag);
|
|
ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid));
|
|
/* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */
|
|
|
|
return;
|
|
}
|
|
|
|
/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
|
|
static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen,
|
|
const int acl_type, const int size_of_data_area)
|
|
{
|
|
int size = 0;
|
|
int i;
|
|
__u16 count;
|
|
struct cifs_posix_ace *pACE;
|
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src;
|
|
posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt;
|
|
|
|
if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (acl_type & ACL_TYPE_ACCESS) {
|
|
count = le16_to_cpu(cifs_acl->access_entry_count);
|
|
pACE = &cifs_acl->ace_array[0];
|
|
size = sizeof(struct cifs_posix_acl);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* check if we would go beyond end of SMB */
|
|
if (size_of_data_area < size) {
|
|
cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d",
|
|
size_of_data_area, size));
|
|
return -EINVAL;
|
|
}
|
|
} else if (acl_type & ACL_TYPE_DEFAULT) {
|
|
count = le16_to_cpu(cifs_acl->access_entry_count);
|
|
size = sizeof(struct cifs_posix_acl);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* skip past access ACEs to get to default ACEs */
|
|
pACE = &cifs_acl->ace_array[count];
|
|
count = le16_to_cpu(cifs_acl->default_entry_count);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* check if we would go beyond end of SMB */
|
|
if (size_of_data_area < size)
|
|
return -EINVAL;
|
|
} else {
|
|
/* illegal type */
|
|
return -EINVAL;
|
|
}
|
|
|
|
size = posix_acl_xattr_size(count);
|
|
if ((buflen == 0) || (local_acl == NULL)) {
|
|
/* used to query ACL EA size */
|
|
} else if (size > buflen) {
|
|
return -ERANGE;
|
|
} else /* buffer big enough */ {
|
|
local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
|
|
for (i = 0; i < count ; i++) {
|
|
cifs_convert_ace(&local_acl->a_entries[i], pACE);
|
|
pACE++;
|
|
}
|
|
}
|
|
return size;
|
|
}
|
|
|
|
static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace,
|
|
const posix_acl_xattr_entry *local_ace)
|
|
{
|
|
__u16 rc = 0; /* 0 = ACL converted ok */
|
|
|
|
cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
|
|
cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag);
|
|
/* BB is there a better way to handle the large uid? */
|
|
if (local_ace->e_id == cpu_to_le32(-1)) {
|
|
/* Probably no need to le convert -1 on any arch but can not hurt */
|
|
cifs_ace->cifs_uid = cpu_to_le64(-1);
|
|
} else
|
|
cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
|
|
/*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
|
|
return rc;
|
|
}
|
|
|
|
/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
|
|
static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL,
|
|
const int buflen, const int acl_type)
|
|
{
|
|
__u16 rc = 0;
|
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data;
|
|
posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL;
|
|
int count;
|
|
int i;
|
|
|
|
if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
|
|
return 0;
|
|
|
|
count = posix_acl_xattr_count((size_t)buflen);
|
|
cFYI(1, ("setting acl with %d entries from buf of length %d and "
|
|
"version of %d",
|
|
count, buflen, le32_to_cpu(local_acl->a_version)));
|
|
if (le32_to_cpu(local_acl->a_version) != 2) {
|
|
cFYI(1, ("unknown POSIX ACL version %d",
|
|
le32_to_cpu(local_acl->a_version)));
|
|
return 0;
|
|
}
|
|
cifs_acl->version = cpu_to_le16(1);
|
|
if (acl_type == ACL_TYPE_ACCESS)
|
|
cifs_acl->access_entry_count = cpu_to_le16(count);
|
|
else if (acl_type == ACL_TYPE_DEFAULT)
|
|
cifs_acl->default_entry_count = cpu_to_le16(count);
|
|
else {
|
|
cFYI(1, ("unknown ACL type %d", acl_type));
|
|
return 0;
|
|
}
|
|
for (i = 0; i < count; i++) {
|
|
rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
|
|
&local_acl->a_entries[i]);
|
|
if (rc != 0) {
|
|
/* ACE not converted */
|
|
break;
|
|
}
|
|
}
|
|
if (rc == 0) {
|
|
rc = (__u16)(count * sizeof(struct cifs_posix_ace));
|
|
rc += sizeof(struct cifs_posix_acl);
|
|
/* BB add check to make sure ACL does not overflow SMB */
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
char *acl_inf, const int buflen, const int acl_type,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* SMB_QUERY_POSIX_ACL */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));
|
|
|
|
queryAclRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->FileName[name_len] = 0;
|
|
pSMB->FileName[name_len+1] = 0;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_qpi_req,
|
|
InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_acl_get);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
|
|
} else {
|
|
/* decode response */
|
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc || (pSMBr->ByteCount < 2))
|
|
/* BB also check enough total bytes returned */
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
rc = cifs_copy_posix_acl(acl_inf,
|
|
(char *)&pSMBr->hdr.Protocol+data_offset,
|
|
buflen, acl_type, count);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto queryAclRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *fileName,
|
|
const char *local_acl, const int buflen,
|
|
const int acl_type,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
char *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count, data_count, param_offset, offset;
|
|
|
|
cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
|
|
setAclRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB size from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
|
|
/* convert to on the wire format for POSIX ACL */
|
|
data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type);
|
|
|
|
if (data_count == 0) {
|
|
rc = -EOPNOTSUPP;
|
|
goto setACLerrorExit;
|
|
}
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
|
|
byte_count = 3 /* pad */ + params + data_count;
|
|
pSMB->DataCount = cpu_to_le16(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("Set POSIX ACL returned %d", rc));
|
|
|
|
setACLerrorExit:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto setAclRetry;
|
|
return rc;
|
|
}
|
|
|
|
/* BB fix tabs in this function FIXME BB */
|
|
int
|
|
CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
|
|
const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
|
|
{
|
|
int rc = 0;
|
|
struct smb_t2_qfi_req *pSMB = NULL;
|
|
struct smb_t2_qfi_rsp *pSMBr = NULL;
|
|
int bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In GetExtAttr"));
|
|
if (tcon == NULL)
|
|
return -ENODEV;
|
|
|
|
GetExtAttrRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2 /* level */ + 2 /* fid */;
|
|
pSMB->t2.TotalDataCount = 0;
|
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->t2.MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->t2.MaxSetupCount = 0;
|
|
pSMB->t2.Reserved = 0;
|
|
pSMB->t2.Flags = 0;
|
|
pSMB->t2.Timeout = 0;
|
|
pSMB->t2.Reserved2 = 0;
|
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
|
|
Fid) - 4);
|
|
pSMB->t2.DataCount = 0;
|
|
pSMB->t2.DataOffset = 0;
|
|
pSMB->t2.SetupCount = 1;
|
|
pSMB->t2.Reserved3 = 0;
|
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
|
|
pSMB->Pad = 0;
|
|
pSMB->Fid = netfid;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("error %d in GetExtAttr", rc));
|
|
} else {
|
|
/* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc || (pSMBr->ByteCount < 2))
|
|
/* BB also check enough total bytes returned */
|
|
/* If rc should we check for EOPNOSUPP and
|
|
disable the srvino flag? or in caller? */
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
struct file_chattr_info *pfinfo;
|
|
/* BB Do we need a cast or hash here ? */
|
|
if (count != 16) {
|
|
cFYI(1, ("Illegal size ret in GetExtAttr"));
|
|
rc = -EIO;
|
|
goto GetExtAttrOut;
|
|
}
|
|
pfinfo = (struct file_chattr_info *)
|
|
(data_offset + (char *) &pSMBr->hdr.Protocol);
|
|
*pExtAttrBits = le64_to_cpu(pfinfo->mode);
|
|
*pMask = le64_to_cpu(pfinfo->mask);
|
|
}
|
|
}
|
|
GetExtAttrOut:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto GetExtAttrRetry;
|
|
return rc;
|
|
}
|
|
|
|
#endif /* CONFIG_POSIX */
|
|
|
|
#ifdef CONFIG_CIFS_EXPERIMENTAL
|
|
/* Get Security Descriptor (by handle) from remote server for a file or dir */
|
|
int
|
|
CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
|
|
struct cifs_ntsd **acl_inf, __u32 *pbuflen)
|
|
{
|
|
int rc = 0;
|
|
int buf_type = 0;
|
|
QUERY_SEC_DESC_REQ *pSMB;
|
|
struct kvec iov[1];
|
|
|
|
cFYI(1, ("GetCifsACL"));
|
|
|
|
*pbuflen = 0;
|
|
*acl_inf = NULL;
|
|
|
|
rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0,
|
|
8 /* parm len */, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le32(4);
|
|
/* BB TEST with big acls that might need to be e.g. larger than 16K */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
|
|
CIFS_ACL_DACL);
|
|
pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
|
|
pSMB->hdr.smb_buf_length += 11;
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
|
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type,
|
|
CIFS_STD_OP);
|
|
cifs_stats_inc(&tcon->num_acl_get);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QuerySecDesc = %d", rc));
|
|
} else { /* decode response */
|
|
__le32 *parm;
|
|
__u32 parm_len;
|
|
__u32 acl_len;
|
|
struct smb_com_ntransact_rsp *pSMBr;
|
|
char *pdata;
|
|
|
|
/* validate_nttransact */
|
|
rc = validate_ntransact(iov[0].iov_base, (char **)&parm,
|
|
&pdata, &parm_len, pbuflen);
|
|
if (rc)
|
|
goto qsec_out;
|
|
pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base;
|
|
|
|
cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf));
|
|
|
|
if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
|
|
rc = -EIO; /* bad smb */
|
|
*pbuflen = 0;
|
|
goto qsec_out;
|
|
}
|
|
|
|
/* BB check that data area is minimum length and as big as acl_len */
|
|
|
|
acl_len = le32_to_cpu(*parm);
|
|
if (acl_len != *pbuflen) {
|
|
cERROR(1, ("acl length %d does not match %d",
|
|
acl_len, *pbuflen));
|
|
if (*pbuflen > acl_len)
|
|
*pbuflen = acl_len;
|
|
}
|
|
|
|
/* check if buffer is big enough for the acl
|
|
header followed by the smallest SID */
|
|
if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) ||
|
|
(*pbuflen >= 64 * 1024)) {
|
|
cERROR(1, ("bad acl length %d", *pbuflen));
|
|
rc = -EINVAL;
|
|
*pbuflen = 0;
|
|
} else {
|
|
*acl_inf = kmalloc(*pbuflen, GFP_KERNEL);
|
|
if (*acl_inf == NULL) {
|
|
*pbuflen = 0;
|
|
rc = -ENOMEM;
|
|
}
|
|
memcpy(*acl_inf, pdata, *pbuflen);
|
|
}
|
|
}
|
|
qsec_out:
|
|
if (buf_type == CIFS_SMALL_BUFFER)
|
|
cifs_small_buf_release(iov[0].iov_base);
|
|
else if (buf_type == CIFS_LARGE_BUFFER)
|
|
cifs_buf_release(iov[0].iov_base);
|
|
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
|
|
struct cifs_ntsd *pntsd, __u32 acllen)
|
|
{
|
|
__u16 byte_count, param_count, data_count, param_offset, data_offset;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
SET_SEC_DESC_REQ *pSMB = NULL;
|
|
NTRANSACT_RSP *pSMBr = NULL;
|
|
|
|
setCifsAclRetry:
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
|
|
param_count = 8;
|
|
param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4;
|
|
data_count = acllen;
|
|
data_offset = param_offset + param_count;
|
|
byte_count = 3 /* pad */ + param_count;
|
|
|
|
pSMB->DataCount = cpu_to_le32(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->MaxParameterCount = cpu_to_le32(4);
|
|
pSMB->MaxDataCount = cpu_to_le32(16384);
|
|
pSMB->ParameterCount = cpu_to_le32(param_count);
|
|
pSMB->ParameterOffset = cpu_to_le32(param_offset);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->DataOffset = cpu_to_le32(data_offset);
|
|
pSMB->SetupCount = 0;
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count+data_count);
|
|
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL);
|
|
|
|
if (pntsd && acllen) {
|
|
memcpy((char *) &pSMBr->hdr.Protocol + data_offset,
|
|
(char *) pntsd,
|
|
acllen);
|
|
pSMB->hdr.smb_buf_length += (byte_count + data_count);
|
|
|
|
} else
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
|
|
cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc));
|
|
if (rc)
|
|
cFYI(1, ("Set CIFS ACL returned %d", rc));
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto setCifsAclRetry;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
#endif /* CONFIG_CIFS_EXPERIMENTAL */
|
|
|
|
/* Legacy Query Path Information call for lookup to old servers such
|
|
as Win9x/WinME */
|
|
int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
FILE_ALL_INFO *pFinfo,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
QUERY_INFORMATION_REQ *pSMB;
|
|
QUERY_INFORMATION_RSP *pSMBr;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cFYI(1, ("In SMBQPath path %s", searchName));
|
|
QInfRetry:
|
|
rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else {
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
pSMB->BufferFormat = 0x04;
|
|
name_len++; /* account for buffer type byte */
|
|
pSMB->hdr.smb_buf_length += (__u16) name_len;
|
|
pSMB->ByteCount = cpu_to_le16(name_len);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QueryInfo = %d", rc));
|
|
} else if (pFinfo) {
|
|
struct timespec ts;
|
|
__u32 time = le32_to_cpu(pSMBr->last_write_time);
|
|
|
|
/* decode response */
|
|
/* BB FIXME - add time zone adjustment BB */
|
|
memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
|
|
ts.tv_nsec = 0;
|
|
ts.tv_sec = time;
|
|
/* decode time fields */
|
|
pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
|
|
pFinfo->LastWriteTime = pFinfo->ChangeTime;
|
|
pFinfo->LastAccessTime = 0;
|
|
pFinfo->AllocationSize =
|
|
cpu_to_le64(le32_to_cpu(pSMBr->size));
|
|
pFinfo->EndOfFile = pFinfo->AllocationSize;
|
|
pFinfo->Attributes =
|
|
cpu_to_le32(le16_to_cpu(pSMBr->attr));
|
|
} else
|
|
rc = -EIO; /* bad buffer passed in */
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QInfRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
FILE_ALL_INFO *pFindData,
|
|
int legacy /* old style infolevel */,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* level 263 SMB_QUERY_FILE_ALL_INFO */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
/* cFYI(1, ("In QPathInfo path %s", searchName)); */
|
|
QPathInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
if (legacy)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QPathInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc) /* BB add auto retry on EOPNOTSUPP? */
|
|
rc = -EIO;
|
|
else if (!legacy && (pSMBr->ByteCount < 40))
|
|
rc = -EIO; /* bad smb */
|
|
else if (legacy && (pSMBr->ByteCount < 24))
|
|
rc = -EIO; /* 24 or 26 expected but we do not read
|
|
last field */
|
|
else if (pFindData) {
|
|
int size;
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
/* On legacy responses we do not read the last field,
|
|
EAsize, fortunately since it varies by subdialect and
|
|
also note it differs on Set vs. Get, ie two bytes or 4
|
|
bytes depending but we don't care here */
|
|
if (legacy)
|
|
size = sizeof(FILE_INFO_STANDARD);
|
|
else
|
|
size = sizeof(FILE_ALL_INFO);
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset, size);
|
|
} else
|
|
rc = -ENOMEM;
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QPathInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
FILE_UNIX_BASIC_INFO *pFindData,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* SMB_QUERY_FILE_UNIX_BASIC */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
|
|
UnixQPathInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QPathInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
|
|
cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n"
|
|
"Unix Extensions can be disabled on mount "
|
|
"by specifying the nosfu mount option."));
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset,
|
|
sizeof(FILE_UNIX_BASIC_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto UnixQPathInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* xid, tcon, searchName and codepage are input parms, rest are returned */
|
|
int
|
|
CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
|
|
const char *searchName,
|
|
const struct nls_table *nls_codepage,
|
|
__u16 *pnetfid,
|
|
struct cifs_search_info *psrch_inf, int remap, const char dirsep)
|
|
{
|
|
/* level 257 SMB_ */
|
|
TRANSACTION2_FFIRST_REQ *pSMB = NULL;
|
|
TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
|
|
T2_FFIRST_RSP_PARMS *parms;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In FindFirst for %s", searchName));
|
|
|
|
findFirstRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
/* We can not add the asterik earlier in case
|
|
it got remapped to 0xF03A as if it were part of the
|
|
directory name instead of a wildcard */
|
|
name_len *= 2;
|
|
pSMB->FileName[name_len] = dirsep;
|
|
pSMB->FileName[name_len+1] = 0;
|
|
pSMB->FileName[name_len+2] = '*';
|
|
pSMB->FileName[name_len+3] = 0;
|
|
name_len += 4; /* now the trailing null */
|
|
pSMB->FileName[name_len] = 0; /* null terminate just in case */
|
|
pSMB->FileName[name_len+1] = 0;
|
|
name_len += 2;
|
|
} else { /* BB add check for overrun of SMB buf BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
/* BB fix here and in unicode clause above ie
|
|
if (name_len > buffersize-header)
|
|
free buffer exit; BB */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
pSMB->FileName[name_len] = dirsep;
|
|
pSMB->FileName[name_len+1] = '*';
|
|
pSMB->FileName[name_len+2] = 0;
|
|
name_len += 3;
|
|
}
|
|
|
|
params = 12 + name_len /* includes null */ ;
|
|
pSMB->TotalDataCount = 0; /* no EAs */
|
|
pSMB->MaxParameterCount = cpu_to_le16(10);
|
|
pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes)
|
|
- 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
|
|
pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
|
|
CIFS_SEARCH_RETURN_RESUME);
|
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
|
|
|
|
/* BB what should we set StorageType to? Does it matter? BB */
|
|
pSMB->SearchStorageType = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_ffirst);
|
|
|
|
if (rc) {/* BB add logic to retry regular search if Unix search
|
|
rejected unexpectedly by server */
|
|
/* BB Add code to handle unsupported level rc */
|
|
cFYI(1, ("Error in FindFirst = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* BB eventually could optimize out free and realloc of buf */
|
|
/* for this case */
|
|
if (rc == -EAGAIN)
|
|
goto findFirstRetry;
|
|
} else { /* decode response */
|
|
/* BB remember to free buffer if error BB */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc == 0) {
|
|
unsigned int lnoff;
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
psrch_inf->unicode = true;
|
|
else
|
|
psrch_inf->unicode = false;
|
|
|
|
psrch_inf->ntwrk_buf_start = (char *)pSMBr;
|
|
psrch_inf->smallBuf = 0;
|
|
psrch_inf->srch_entries_start =
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.ParameterOffset));
|
|
|
|
if (parms->EndofSearch)
|
|
psrch_inf->endOfSearch = true;
|
|
else
|
|
psrch_inf->endOfSearch = false;
|
|
|
|
psrch_inf->entries_in_buffer =
|
|
le16_to_cpu(parms->SearchCount);
|
|
psrch_inf->index_of_last_entry = 2 /* skip . and .. */ +
|
|
psrch_inf->entries_in_buffer;
|
|
lnoff = le16_to_cpu(parms->LastNameOffset);
|
|
if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE <
|
|
lnoff) {
|
|
cERROR(1, ("ignoring corrupt resume name"));
|
|
psrch_inf->last_entry = NULL;
|
|
return rc;
|
|
}
|
|
|
|
psrch_inf->last_entry = psrch_inf->srch_entries_start +
|
|
lnoff;
|
|
|
|
*pnetfid = parms->SearchHandle;
|
|
} else {
|
|
cifs_buf_release(pSMB);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
|
|
__u16 searchHandle, struct cifs_search_info *psrch_inf)
|
|
{
|
|
TRANSACTION2_FNEXT_REQ *pSMB = NULL;
|
|
TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
|
|
T2_FNEXT_RSP_PARMS *parms;
|
|
char *response_data;
|
|
int rc = 0;
|
|
int bytes_returned, name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In FindNext"));
|
|
|
|
if (psrch_inf->endOfSearch)
|
|
return -ENOENT;
|
|
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 14; /* includes 2 bytes of null string, converted to LE below*/
|
|
byte_count = 0;
|
|
pSMB->TotalDataCount = 0; /* no EAs */
|
|
pSMB->MaxParameterCount = cpu_to_le16(8);
|
|
pSMB->MaxDataCount =
|
|
cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) &
|
|
0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
|
|
pSMB->SearchHandle = searchHandle; /* always kept as le */
|
|
pSMB->SearchCount =
|
|
cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO));
|
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
|
|
pSMB->ResumeKey = psrch_inf->resume_key;
|
|
pSMB->SearchFlags =
|
|
cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
|
|
|
|
name_len = psrch_inf->resume_name_len;
|
|
params += name_len;
|
|
if (name_len < PATH_MAX) {
|
|
memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
|
|
byte_count += name_len;
|
|
/* 14 byte parm len above enough for 2 byte null terminator */
|
|
pSMB->ResumeFileName[name_len] = 0;
|
|
pSMB->ResumeFileName[name_len+1] = 0;
|
|
} else {
|
|
rc = -EINVAL;
|
|
goto FNext2_err_exit;
|
|
}
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->num_fnext);
|
|
if (rc) {
|
|
if (rc == -EBADF) {
|
|
psrch_inf->endOfSearch = true;
|
|
cifs_buf_release(pSMB);
|
|
rc = 0; /* search probably was closed at end of search*/
|
|
} else
|
|
cFYI(1, ("FindNext returned = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc == 0) {
|
|
unsigned int lnoff;
|
|
|
|
/* BB fixme add lock for file (srch_info) struct here */
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
psrch_inf->unicode = true;
|
|
else
|
|
psrch_inf->unicode = false;
|
|
response_data = (char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.ParameterOffset);
|
|
parms = (T2_FNEXT_RSP_PARMS *)response_data;
|
|
response_data = (char *)&pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
if (psrch_inf->smallBuf)
|
|
cifs_small_buf_release(
|
|
psrch_inf->ntwrk_buf_start);
|
|
else
|
|
cifs_buf_release(psrch_inf->ntwrk_buf_start);
|
|
psrch_inf->srch_entries_start = response_data;
|
|
psrch_inf->ntwrk_buf_start = (char *)pSMB;
|
|
psrch_inf->smallBuf = 0;
|
|
if (parms->EndofSearch)
|
|
psrch_inf->endOfSearch = true;
|
|
else
|
|
psrch_inf->endOfSearch = false;
|
|
psrch_inf->entries_in_buffer =
|
|
le16_to_cpu(parms->SearchCount);
|
|
psrch_inf->index_of_last_entry +=
|
|
psrch_inf->entries_in_buffer;
|
|
lnoff = le16_to_cpu(parms->LastNameOffset);
|
|
if (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE <
|
|
lnoff) {
|
|
cERROR(1, ("ignoring corrupt resume name"));
|
|
psrch_inf->last_entry = NULL;
|
|
return rc;
|
|
} else
|
|
psrch_inf->last_entry =
|
|
psrch_inf->srch_entries_start + lnoff;
|
|
|
|
/* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",
|
|
psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */
|
|
|
|
/* BB fixme add unlock here */
|
|
}
|
|
|
|
}
|
|
|
|
/* BB On error, should we leave previous search buf (and count and
|
|
last entry fields) intact or free the previous one? */
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
FNext2_err_exit:
|
|
if (rc != 0)
|
|
cifs_buf_release(pSMB);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSFindClose(const int xid, struct cifsTconInfo *tcon,
|
|
const __u16 searchHandle)
|
|
{
|
|
int rc = 0;
|
|
FINDCLOSE_REQ *pSMB = NULL;
|
|
|
|
cFYI(1, ("In CIFSSMBFindClose"));
|
|
rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
|
|
|
|
/* no sense returning error if session restarted
|
|
as file handle has been closed */
|
|
if (rc == -EAGAIN)
|
|
return 0;
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = searchHandle;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
if (rc)
|
|
cERROR(1, ("Send error in FindClose = %d", rc));
|
|
|
|
cifs_stats_inc(&tcon->num_fclose);
|
|
|
|
/* Since session is dead, search handle closed on server already */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
__u64 *inode_number,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int name_len, bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In GetSrvInodeNum for %s", searchName));
|
|
if (tcon == NULL)
|
|
return -ENODEV;
|
|
|
|
GetInodeNumberRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("error %d in QueryInternalInfo", rc));
|
|
} else {
|
|
/* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc || (pSMBr->ByteCount < 2))
|
|
/* BB also check enough total bytes returned */
|
|
/* If rc should we check for EOPNOSUPP and
|
|
disable the srvino flag? or in caller? */
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
struct file_internal_info *pfinfo;
|
|
/* BB Do we need a cast or hash here ? */
|
|
if (count < 8) {
|
|
cFYI(1, ("Illegal size ret in QryIntrnlInf"));
|
|
rc = -EIO;
|
|
goto GetInodeNumOut;
|
|
}
|
|
pfinfo = (struct file_internal_info *)
|
|
(data_offset + (char *) &pSMBr->hdr.Protocol);
|
|
*inode_number = le64_to_cpu(pfinfo->UniqueId);
|
|
}
|
|
}
|
|
GetInodeNumOut:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto GetInodeNumberRetry;
|
|
return rc;
|
|
}
|
|
|
|
/* parses DFS refferal V3 structure
|
|
* caller is responsible for freeing target_nodes
|
|
* returns:
|
|
* on success - 0
|
|
* on failure - errno
|
|
*/
|
|
static int
|
|
parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
|
|
unsigned int *num_of_nodes,
|
|
struct dfs_info3_param **target_nodes,
|
|
const struct nls_table *nls_codepage, int remap,
|
|
const char *searchName)
|
|
{
|
|
int i, rc = 0;
|
|
char *data_end;
|
|
bool is_unicode;
|
|
struct dfs_referral_level_3 *ref;
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
is_unicode = true;
|
|
else
|
|
is_unicode = false;
|
|
*num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals);
|
|
|
|
if (*num_of_nodes < 1) {
|
|
cERROR(1, ("num_referrals: must be at least > 0,"
|
|
"but we get num_referrals = %d\n", *num_of_nodes));
|
|
rc = -EINVAL;
|
|
goto parse_DFS_referrals_exit;
|
|
}
|
|
|
|
ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals);
|
|
if (ref->VersionNumber != cpu_to_le16(3)) {
|
|
cERROR(1, ("Referrals of V%d version are not supported,"
|
|
"should be V3", le16_to_cpu(ref->VersionNumber)));
|
|
rc = -EINVAL;
|
|
goto parse_DFS_referrals_exit;
|
|
}
|
|
|
|
/* get the upper boundary of the resp buffer */
|
|
data_end = (char *)(&(pSMBr->PathConsumed)) +
|
|
le16_to_cpu(pSMBr->t2.DataCount);
|
|
|
|
cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n",
|
|
*num_of_nodes,
|
|
le32_to_cpu(pSMBr->DFSFlags)));
|
|
|
|
*target_nodes = kzalloc(sizeof(struct dfs_info3_param) *
|
|
*num_of_nodes, GFP_KERNEL);
|
|
if (*target_nodes == NULL) {
|
|
cERROR(1, ("Failed to allocate buffer for target_nodes\n"));
|
|
rc = -ENOMEM;
|
|
goto parse_DFS_referrals_exit;
|
|
}
|
|
|
|
/* collect neccessary data from referrals */
|
|
for (i = 0; i < *num_of_nodes; i++) {
|
|
char *temp;
|
|
int max_len;
|
|
struct dfs_info3_param *node = (*target_nodes)+i;
|
|
|
|
node->flags = le32_to_cpu(pSMBr->DFSFlags);
|
|
if (is_unicode) {
|
|
__le16 *tmp = kmalloc(strlen(searchName)*2 + 2,
|
|
GFP_KERNEL);
|
|
cifsConvertToUCS((__le16 *) tmp, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
node->path_consumed = cifs_ucs2_bytes(tmp,
|
|
le16_to_cpu(pSMBr->PathConsumed),
|
|
nls_codepage);
|
|
kfree(tmp);
|
|
} else
|
|
node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
|
|
|
|
node->server_type = le16_to_cpu(ref->ServerType);
|
|
node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);
|
|
|
|
/* copy DfsPath */
|
|
temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset);
|
|
max_len = data_end - temp;
|
|
node->path_name = cifs_strndup_from_ucs(temp, max_len,
|
|
is_unicode, nls_codepage);
|
|
if (IS_ERR(node->path_name)) {
|
|
rc = PTR_ERR(node->path_name);
|
|
node->path_name = NULL;
|
|
goto parse_DFS_referrals_exit;
|
|
}
|
|
|
|
/* copy link target UNC */
|
|
temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset);
|
|
max_len = data_end - temp;
|
|
node->node_name = cifs_strndup_from_ucs(temp, max_len,
|
|
is_unicode, nls_codepage);
|
|
if (IS_ERR(node->node_name)) {
|
|
rc = PTR_ERR(node->node_name);
|
|
node->node_name = NULL;
|
|
goto parse_DFS_referrals_exit;
|
|
}
|
|
}
|
|
|
|
parse_DFS_referrals_exit:
|
|
if (rc) {
|
|
free_dfs_info_array(*target_nodes, *num_of_nodes);
|
|
*target_nodes = NULL;
|
|
*num_of_nodes = 0;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
|
|
const unsigned char *searchName,
|
|
struct dfs_info3_param **target_nodes,
|
|
unsigned int *num_of_nodes,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* TRANS2_GET_DFS_REFERRAL */
|
|
TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
|
|
TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
*num_of_nodes = 0;
|
|
*target_nodes = NULL;
|
|
|
|
cFYI(1, ("In GetDFSRefer the path %s", searchName));
|
|
if (ses == NULL)
|
|
return -ENODEV;
|
|
getDFSRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* server pointer checked in called function,
|
|
but should never be null here anyway */
|
|
pSMB->hdr.Mid = GetNextMid(ses->server);
|
|
pSMB->hdr.Tid = ses->ipc_tid;
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
if (ses->capabilities & CAP_STATUS32)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
|
|
if (ses->capabilities & CAP_DFS)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_DFS;
|
|
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
|
|
searchName, PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->RequestFileName, searchName, name_len);
|
|
}
|
|
|
|
if (ses->server) {
|
|
if (ses->server->secMode &
|
|
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
|
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
}
|
|
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
|
|
params = 2 /* level */ + name_len /*includes null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = 0;
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
|
|
byte_count = params + 3 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->MaxReferralLevel = cpu_to_le16(3);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in GetDFSRefer = %d", rc));
|
|
goto GetDFSRefExit;
|
|
}
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
/* BB Also check if enough total bytes returned? */
|
|
if (rc || (pSMBr->ByteCount < 17)) {
|
|
rc = -EIO; /* bad smb */
|
|
goto GetDFSRefExit;
|
|
}
|
|
|
|
cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d",
|
|
pSMBr->ByteCount,
|
|
le16_to_cpu(pSMBr->t2.DataOffset)));
|
|
|
|
/* parse returned result into more usable form */
|
|
rc = parse_DFS_referrals(pSMBr, num_of_nodes,
|
|
target_nodes, nls_codepage, remap,
|
|
searchName);
|
|
|
|
GetDFSRefExit:
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto getDFSRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Query File System Info such as free space to old servers such as Win 9x */
|
|
int
|
|
SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
|
|
{
|
|
/* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_ALLOC_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("OldQFSInfo"));
|
|
oldQFSInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QFSInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < 18))
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
cFYI(1, ("qfsinf resp BCC: %d Offset %d",
|
|
pSMBr->ByteCount, data_offset));
|
|
|
|
response_data = (FILE_SYSTEM_ALLOC_INFO *)
|
|
(((char *) &pSMBr->hdr.Protocol) + data_offset);
|
|
FSData->f_bsize =
|
|
le16_to_cpu(response_data->BytesPerSector) *
|
|
le32_to_cpu(response_data->
|
|
SectorsPerAllocationUnit);
|
|
FSData->f_blocks =
|
|
le32_to_cpu(response_data->TotalAllocationUnits);
|
|
FSData->f_bfree = FSData->f_bavail =
|
|
le32_to_cpu(response_data->FreeAllocationUnits);
|
|
cFYI(1,
|
|
("Blocks: %lld Free: %lld Block size %ld",
|
|
(unsigned long long)FSData->f_blocks,
|
|
(unsigned long long)FSData->f_bfree,
|
|
FSData->f_bsize));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto oldQFSInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
|
|
{
|
|
/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QFSInfo"));
|
|
QFSInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QFSInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < 24))
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
response_data =
|
|
(FILE_SYSTEM_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
FSData->f_bsize =
|
|
le32_to_cpu(response_data->BytesPerSector) *
|
|
le32_to_cpu(response_data->
|
|
SectorsPerAllocationUnit);
|
|
FSData->f_blocks =
|
|
le64_to_cpu(response_data->TotalAllocationUnits);
|
|
FSData->f_bfree = FSData->f_bavail =
|
|
le64_to_cpu(response_data->FreeAllocationUnits);
|
|
cFYI(1,
|
|
("Blocks: %lld Free: %lld Block size %ld",
|
|
(unsigned long long)FSData->f_blocks,
|
|
(unsigned long long)FSData->f_bfree,
|
|
FSData->f_bsize));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
|
|
{
|
|
/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QFSAttributeInfo"));
|
|
QFSAttributeRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < 13)) {
|
|
/* BB also check if enough bytes returned */
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_ATTRIBUTE_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsAttrInfo, response_data,
|
|
sizeof(FILE_SYSTEM_ATTRIBUTE_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSAttributeRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
|
|
{
|
|
/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_DEVICE_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QFSDeviceInfo"));
|
|
QFSDeviceRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO)))
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_DEVICE_INFO *)
|
|
(((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsDevInfo, response_data,
|
|
sizeof(FILE_SYSTEM_DEVICE_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSDeviceRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
|
|
{
|
|
/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_UNIX_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QFSUnixInfo"));
|
|
QFSUnixRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
|
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < 13)) {
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_UNIX_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsUnixInfo, response_data,
|
|
sizeof(FILE_SYSTEM_UNIX_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSUnixRetry;
|
|
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)
|
|
{
|
|
/* level 0x200 SMB_SET_CIFS_UNIX_INFO */
|
|
TRANSACTION2_SETFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cFYI(1, ("In SETFSUnixInfo"));
|
|
SETFSUnixRetry:
|
|
/* BB switch to small buf init to save memory */
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 4; /* 2 bytes zero followed by info level. */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum)
|
|
- 4;
|
|
offset = param_offset + params;
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
|
|
byte_count = 1 /* pad */ + params + 12;
|
|
|
|
pSMB->DataCount = cpu_to_le16(12);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
|
|
/* Params. */
|
|
pSMB->FileNum = 0;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
|
|
|
|
/* Data. */
|
|
pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
|
|
pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
|
|
pSMB->ClientUnixCap = cpu_to_le64(cap);
|
|
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc)
|
|
rc = -EIO; /* bad smb */
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SETFSUnixRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
int
|
|
CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
|
|
struct kstatfs *FSData)
|
|
{
|
|
/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_POSIX_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In QFSPosixInfo"));
|
|
QFSPosixRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
|
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || (pSMBr->ByteCount < 13)) {
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_POSIX_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
FSData->f_bsize =
|
|
le32_to_cpu(response_data->BlockSize);
|
|
FSData->f_blocks =
|
|
le64_to_cpu(response_data->TotalBlocks);
|
|
FSData->f_bfree =
|
|
le64_to_cpu(response_data->BlocksAvail);
|
|
if (response_data->UserBlocksAvail == cpu_to_le64(-1)) {
|
|
FSData->f_bavail = FSData->f_bfree;
|
|
} else {
|
|
FSData->f_bavail =
|
|
le64_to_cpu(response_data->UserBlocksAvail);
|
|
}
|
|
if (response_data->TotalFileNodes != cpu_to_le64(-1))
|
|
FSData->f_files =
|
|
le64_to_cpu(response_data->TotalFileNodes);
|
|
if (response_data->FreeFileNodes != cpu_to_le64(-1))
|
|
FSData->f_ffree =
|
|
le64_to_cpu(response_data->FreeFileNodes);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSPosixRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/* We can not use write of zero bytes trick to
|
|
set file size due to need for large file support. Also note that
|
|
this SetPathInfo is preferred to SetFileInfo based method in next
|
|
routine which is only needed to work around a sharing violation bug
|
|
in Samba which this routine can run into */
|
|
|
|
int
|
|
CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
|
|
__u64 size, bool SetAllocation,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
struct file_end_of_file_info *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count, data_count, param_offset, offset;
|
|
|
|
cFYI(1, ("In SetEOF"));
|
|
SetEOFRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
data_count = sizeof(struct file_end_of_file_info);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(4100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
if (SetAllocation) {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
|
|
} else /* Set File Size */ {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
|
|
}
|
|
|
|
parm_data =
|
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
|
|
offset);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + data_count;
|
|
pSMB->DataCount = cpu_to_le16(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
parm_data->FileSize = cpu_to_le64(size);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("SetPathInfo (file size) returned %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetEOFRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
|
|
__u16 fid, __u32 pid_of_opener, bool SetAllocation)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
struct file_end_of_file_info *parm_data;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
|
|
(long long)size));
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
|
|
count = sizeof(struct file_end_of_file_info);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
parm_data =
|
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol)
|
|
+ offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
parm_data->FileSize = cpu_to_le64(size);
|
|
pSMB->Fid = fid;
|
|
if (SetAllocation) {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
|
|
} else /* Set File Size */ {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
|
|
}
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
if (rc) {
|
|
cFYI(1,
|
|
("Send error in SetFileInfo (SetFileSize) = %d",
|
|
rc));
|
|
}
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Some legacy servers such as NT4 require that the file times be set on
|
|
an open handle, rather than by pathname - this is awkward due to
|
|
potential access conflicts on the open, but it is unavoidable for these
|
|
old servers since the only other choice is to go from 100 nanosecond DCE
|
|
time and resort to the original setpathinfo level which takes the ancient
|
|
DOS time format with 2 second granularity */
|
|
int
|
|
CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
|
|
const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cFYI(1, ("Set Times (via SetFileInfo)"));
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
|
|
count = sizeof(FILE_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = fid;
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
if (rc)
|
|
cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc));
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
|
|
bool delete_file, __u16 fid, __u32 pid_of_opener)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cFYI(1, ("Set File Disposition (via SetFileInfo)"));
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
|
|
count = 1;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = fid;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
*data_offset = delete_file ? 1 : 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
|
|
if (rc)
|
|
cFYI(1, ("Send error in SetFileDisposition = %d", rc));
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetPathInfo(const int xid, struct cifsTconInfo *tcon,
|
|
const char *fileName, const FILE_BASIC_INFO *data,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
char *data_offset;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cFYI(1, ("In SetTimes"));
|
|
|
|
SetTimesRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(FILE_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("SetPathInfo (times) returned %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetTimesRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Can not be used to set time stamps yet (due to old DOS time format) */
|
|
/* Can be used to set attributes */
|
|
#if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
|
|
handling it anyway and NT4 was what we thought it would be needed for
|
|
Do not delete it until we prove whether needed for Win9x though */
|
|
int
|
|
CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
|
|
__u16 dos_attrs, const struct nls_table *nls_codepage)
|
|
{
|
|
SETATTR_REQ *pSMB = NULL;
|
|
SETATTR_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cFYI(1, ("In SetAttrLegacy"));
|
|
|
|
SetAttrLgcyRetry:
|
|
rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
ConvertToUCS((__le16 *) pSMB->fileName, fileName,
|
|
PATH_MAX, nls_codepage);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
pSMB->attr = cpu_to_le16(dos_attrs);
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->hdr.smb_buf_length += name_len + 1;
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("Error in LegacySetAttr = %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetAttrLgcyRetry;
|
|
|
|
return rc;
|
|
}
|
|
#endif /* temporarily unneeded SetAttr legacy function */
|
|
|
|
int
|
|
CIFSSMBUnixSetInfo(const int xid, struct cifsTconInfo *tcon, char *fileName,
|
|
const struct cifs_unix_set_info_args *args,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
FILE_UNIX_BASIC_INFO *data_offset;
|
|
__u16 params, param_offset, offset, count, byte_count;
|
|
__u64 mode = args->mode;
|
|
|
|
cFYI(1, ("In SetUID/GID/Mode"));
|
|
setPermsRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(FILE_UNIX_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
data_offset =
|
|
(FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
|
|
offset);
|
|
memset(data_offset, 0, count);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
/* Samba server ignores set of file size to zero due to bugs in some
|
|
older clients, but we should be precise - we use SetFileSize to
|
|
set file size and do not want to truncate file size to zero
|
|
accidently as happened on one Samba server beta by putting
|
|
zero instead of -1 here */
|
|
data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64);
|
|
data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64);
|
|
data_offset->LastStatusChange = cpu_to_le64(args->ctime);
|
|
data_offset->LastAccessTime = cpu_to_le64(args->atime);
|
|
data_offset->LastModificationTime = cpu_to_le64(args->mtime);
|
|
data_offset->Uid = cpu_to_le64(args->uid);
|
|
data_offset->Gid = cpu_to_le64(args->gid);
|
|
/* better to leave device as zero when it is */
|
|
data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
|
|
data_offset->DevMinor = cpu_to_le64(MINOR(args->device));
|
|
data_offset->Permissions = cpu_to_le64(mode);
|
|
|
|
if (S_ISREG(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_FILE);
|
|
else if (S_ISDIR(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_DIR);
|
|
else if (S_ISLNK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
|
|
else if (S_ISCHR(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
|
|
else if (S_ISBLK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
|
|
else if (S_ISFIFO(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_FIFO);
|
|
else if (S_ISSOCK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_SOCKET);
|
|
|
|
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("SetPathInfo (perms) returned %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto setPermsRetry;
|
|
return rc;
|
|
}
|
|
|
|
int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
|
|
const int notify_subdirs, const __u16 netfid,
|
|
__u32 filter, struct file *pfile, int multishot,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
int rc = 0;
|
|
struct smb_com_transaction_change_notify_req *pSMB = NULL;
|
|
struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
|
|
struct dir_notify_req *dnotify_req;
|
|
int bytes_returned;
|
|
|
|
cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid));
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->TotalParameterCount = 0 ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le32(2);
|
|
/* BB find exact data count max from sess structure BB */
|
|
pSMB->MaxDataCount = 0; /* same in little endian or be */
|
|
/* BB VERIFY verify which is correct for above BB */
|
|
pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
|
|
MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
|
|
|
|
pSMB->MaxSetupCount = 4;
|
|
pSMB->Reserved = 0;
|
|
pSMB->ParameterOffset = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 4; /* single byte does not need le conversion */
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
if (notify_subdirs)
|
|
pSMB->WatchTree = 1; /* one byte - no le conversion needed */
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->CompletionFilter = cpu_to_le32(filter);
|
|
pSMB->Fid = netfid; /* file handle always le */
|
|
pSMB->ByteCount = 0;
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *)pSMBr, &bytes_returned,
|
|
CIFS_ASYNC_OP);
|
|
if (rc) {
|
|
cFYI(1, ("Error in Notify = %d", rc));
|
|
} else {
|
|
/* Add file to outstanding requests */
|
|
/* BB change to kmem cache alloc */
|
|
dnotify_req = kmalloc(
|
|
sizeof(struct dir_notify_req),
|
|
GFP_KERNEL);
|
|
if (dnotify_req) {
|
|
dnotify_req->Pid = pSMB->hdr.Pid;
|
|
dnotify_req->PidHigh = pSMB->hdr.PidHigh;
|
|
dnotify_req->Mid = pSMB->hdr.Mid;
|
|
dnotify_req->Tid = pSMB->hdr.Tid;
|
|
dnotify_req->Uid = pSMB->hdr.Uid;
|
|
dnotify_req->netfid = netfid;
|
|
dnotify_req->pfile = pfile;
|
|
dnotify_req->filter = filter;
|
|
dnotify_req->multishot = multishot;
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_add_tail(&dnotify_req->lhead,
|
|
&GlobalDnotifyReqList);
|
|
spin_unlock(&GlobalMid_Lock);
|
|
} else
|
|
rc = -ENOMEM;
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
return rc;
|
|
}
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
ssize_t
|
|
CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName,
|
|
char *EAData, size_t buf_size,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* BB assumes one setup word */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
struct fea *temp_fea;
|
|
char *temp_ptr;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In Query All EAs path %s", searchName));
|
|
QAllEAsRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in QueryAllEAs = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
/* BB also check enough total bytes returned */
|
|
/* BB we need to improve the validity checking
|
|
of these trans2 responses */
|
|
if (rc || (pSMBr->ByteCount < 4))
|
|
rc = -EIO; /* bad smb */
|
|
/* else if (pFindData){
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset, kl);
|
|
}*/ else {
|
|
/* check that length of list is not more than bcc */
|
|
/* check that each entry does not go beyond length
|
|
of list */
|
|
/* check that each element of each entry does not
|
|
go beyond end of list */
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
struct fealist *ea_response_data;
|
|
rc = 0;
|
|
/* validate_trans2_offsets() */
|
|
/* BB check if start of smb + data_offset > &bcc+ bcc */
|
|
ea_response_data = (struct fealist *)
|
|
(((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
name_len = le32_to_cpu(ea_response_data->list_len);
|
|
cFYI(1, ("ea length %d", name_len));
|
|
if (name_len <= 8) {
|
|
/* returned EA size zeroed at top of function */
|
|
cFYI(1, ("empty EA list returned from server"));
|
|
} else {
|
|
/* account for ea list len */
|
|
name_len -= 4;
|
|
temp_fea = ea_response_data->list;
|
|
temp_ptr = (char *)temp_fea;
|
|
while (name_len > 0) {
|
|
__u16 value_len;
|
|
name_len -= 4;
|
|
temp_ptr += 4;
|
|
rc += temp_fea->name_len;
|
|
/* account for prefix user. and trailing null */
|
|
rc = rc + 5 + 1;
|
|
if (rc < (int)buf_size) {
|
|
memcpy(EAData, "user.", 5);
|
|
EAData += 5;
|
|
memcpy(EAData, temp_ptr,
|
|
temp_fea->name_len);
|
|
EAData += temp_fea->name_len;
|
|
/* null terminate name */
|
|
*EAData = 0;
|
|
EAData = EAData + 1;
|
|
} else if (buf_size == 0) {
|
|
/* skip copy - calc size only */
|
|
} else {
|
|
/* stop before overrun buffer */
|
|
rc = -ERANGE;
|
|
break;
|
|
}
|
|
name_len -= temp_fea->name_len;
|
|
temp_ptr += temp_fea->name_len;
|
|
/* account for trailing null */
|
|
name_len--;
|
|
temp_ptr++;
|
|
value_len =
|
|
le16_to_cpu(temp_fea->value_len);
|
|
name_len -= value_len;
|
|
temp_ptr += value_len;
|
|
/* BB check that temp_ptr is still
|
|
within the SMB BB*/
|
|
|
|
/* no trailing null to account for
|
|
in value len */
|
|
/* go on to next EA */
|
|
temp_fea = (struct fea *)temp_ptr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QAllEAsRetry;
|
|
|
|
return (ssize_t)rc;
|
|
}
|
|
|
|
ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon,
|
|
const unsigned char *searchName, const unsigned char *ea_name,
|
|
unsigned char *ea_value, size_t buf_size,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
struct fea *temp_fea;
|
|
char *temp_ptr;
|
|
__u16 params, byte_count;
|
|
|
|
cFYI(1, ("In Query EA path %s", searchName));
|
|
QEARetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cFYI(1, ("Send error in Query EA = %d", rc));
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
/* BB also check enough total bytes returned */
|
|
/* BB we need to improve the validity checking
|
|
of these trans2 responses */
|
|
if (rc || (pSMBr->ByteCount < 4))
|
|
rc = -EIO; /* bad smb */
|
|
/* else if (pFindData){
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset, kl);
|
|
}*/ else {
|
|
/* check that length of list is not more than bcc */
|
|
/* check that each entry does not go beyond length
|
|
of list */
|
|
/* check that each element of each entry does not
|
|
go beyond end of list */
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
struct fealist *ea_response_data;
|
|
rc = -ENODATA;
|
|
/* validate_trans2_offsets() */
|
|
/* BB check if start of smb + data_offset > &bcc+ bcc*/
|
|
ea_response_data = (struct fealist *)
|
|
(((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
name_len = le32_to_cpu(ea_response_data->list_len);
|
|
cFYI(1, ("ea length %d", name_len));
|
|
if (name_len <= 8) {
|
|
/* returned EA size zeroed at top of function */
|
|
cFYI(1, ("empty EA list returned from server"));
|
|
} else {
|
|
/* account for ea list len */
|
|
name_len -= 4;
|
|
temp_fea = ea_response_data->list;
|
|
temp_ptr = (char *)temp_fea;
|
|
/* loop through checking if we have a matching
|
|
name and then return the associated value */
|
|
while (name_len > 0) {
|
|
__u16 value_len;
|
|
name_len -= 4;
|
|
temp_ptr += 4;
|
|
value_len =
|
|
le16_to_cpu(temp_fea->value_len);
|
|
/* BB validate that value_len falls within SMB,
|
|
even though maximum for name_len is 255 */
|
|
if (memcmp(temp_fea->name, ea_name,
|
|
temp_fea->name_len) == 0) {
|
|
/* found a match */
|
|
rc = value_len;
|
|
/* account for prefix user. and trailing null */
|
|
if (rc <= (int)buf_size) {
|
|
memcpy(ea_value,
|
|
temp_fea->name+temp_fea->name_len+1,
|
|
rc);
|
|
/* ea values, unlike ea
|
|
names, are not null
|
|
terminated */
|
|
} else if (buf_size == 0) {
|
|
/* skip copy - calc size only */
|
|
} else {
|
|
/* stop before overrun buffer */
|
|
rc = -ERANGE;
|
|
}
|
|
break;
|
|
}
|
|
name_len -= temp_fea->name_len;
|
|
temp_ptr += temp_fea->name_len;
|
|
/* account for trailing null */
|
|
name_len--;
|
|
temp_ptr++;
|
|
name_len -= value_len;
|
|
temp_ptr += value_len;
|
|
/* No trailing null to account for in
|
|
value_len. Go on to next EA */
|
|
temp_fea = (struct fea *)temp_ptr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QEARetry;
|
|
|
|
return (ssize_t)rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
|
|
const char *ea_name, const void *ea_value,
|
|
const __u16 ea_value_len, const struct nls_table *nls_codepage,
|
|
int remap)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
struct fealist *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, byte_count, offset, count;
|
|
|
|
cFYI(1, ("In SetEA"));
|
|
SetEARetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
|
|
/* done calculating parms using name_len of file name,
|
|
now use name_len to calculate length of ea name
|
|
we are going to create in the inode xattrs */
|
|
if (ea_name == NULL)
|
|
name_len = 0;
|
|
else
|
|
name_len = strnlen(ea_name, 255);
|
|
|
|
count = sizeof(*parm_data) + ea_value_len + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_EA);
|
|
|
|
parm_data =
|
|
(struct fealist *) (((char *) &pSMB->hdr.Protocol) +
|
|
offset);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
parm_data->list_len = cpu_to_le32(count);
|
|
parm_data->list[0].EA_flags = 0;
|
|
/* we checked above that name len is less than 255 */
|
|
parm_data->list[0].name_len = (__u8)name_len;
|
|
/* EA names are always ASCII */
|
|
if (ea_name)
|
|
strncpy(parm_data->list[0].name, ea_name, name_len);
|
|
parm_data->list[0].name[name_len] = 0;
|
|
parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
|
|
/* caller ensures that ea_value_len is less than 64K but
|
|
we need to ensure that it fits within the smb */
|
|
|
|
/*BB add length check to see if it would fit in
|
|
negotiated SMB buffer size BB */
|
|
/* if (ea_value_len > buffer_size - 512 (enough for header)) */
|
|
if (ea_value_len)
|
|
memcpy(parm_data->list[0].name+name_len+1,
|
|
ea_value, ea_value_len);
|
|
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
pSMB->hdr.smb_buf_length += byte_count;
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cFYI(1, ("SetPathInfo (EA) returned %d", rc));
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetEARetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
#endif
|