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bc71cd035c
Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org> Autobuild-User(master): Ralph Böhme <slow@samba.org> Autobuild-Date(master): Wed May 2 01:06:28 CEST 2018 on sn-devel-144
1696 lines
41 KiB
C
1696 lines
41 KiB
C
/*
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* Store streams in xattrs
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*
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* Copyright (C) Volker Lendecke, 2008
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*
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* Partly based on James Peach's Darwin module, which is
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*
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* Copyright (C) James Peach 2006-2007
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "system/filesys.h"
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#include "../lib/crypto/md5.h"
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#include "lib/util/tevent_unix.h"
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#include "librpc/gen_ndr/ioctl.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_VFS
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struct streams_xattr_config {
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const char *prefix;
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size_t prefix_len;
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bool store_stream_type;
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};
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struct stream_io {
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char *base;
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char *xattr_name;
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void *fsp_name_ptr;
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files_struct *fsp;
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vfs_handle_struct *handle;
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};
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static SMB_INO_T stream_inode(const SMB_STRUCT_STAT *sbuf, const char *sname)
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{
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MD5_CTX ctx;
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unsigned char hash[16];
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SMB_INO_T result;
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char *upper_sname;
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DEBUG(10, ("stream_inode called for %lu/%lu [%s]\n",
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(unsigned long)sbuf->st_ex_dev,
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(unsigned long)sbuf->st_ex_ino, sname));
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upper_sname = talloc_strdup_upper(talloc_tos(), sname);
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SMB_ASSERT(upper_sname != NULL);
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MD5Init(&ctx);
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MD5Update(&ctx, (const unsigned char *)&(sbuf->st_ex_dev),
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sizeof(sbuf->st_ex_dev));
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MD5Update(&ctx, (const unsigned char *)&(sbuf->st_ex_ino),
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sizeof(sbuf->st_ex_ino));
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MD5Update(&ctx, (unsigned char *)upper_sname,
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talloc_get_size(upper_sname)-1);
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MD5Final(hash, &ctx);
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TALLOC_FREE(upper_sname);
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/* Hopefully all the variation is in the lower 4 (or 8) bytes! */
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memcpy(&result, hash, sizeof(result));
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DEBUG(10, ("stream_inode returns %lu\n", (unsigned long)result));
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return result;
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}
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static ssize_t get_xattr_size(connection_struct *conn,
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const struct smb_filename *smb_fname,
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const char *xattr_name)
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{
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NTSTATUS status;
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struct ea_struct ea;
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ssize_t result;
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status = get_ea_value(talloc_tos(), conn, NULL, smb_fname,
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xattr_name, &ea);
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if (!NT_STATUS_IS_OK(status)) {
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return -1;
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}
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result = ea.value.length-1;
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TALLOC_FREE(ea.value.data);
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return result;
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}
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/**
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* Given a stream name, populate xattr_name with the xattr name to use for
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* accessing the stream.
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*/
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static NTSTATUS streams_xattr_get_name(vfs_handle_struct *handle,
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TALLOC_CTX *ctx,
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const char *stream_name,
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char **xattr_name)
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{
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char *sname;
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char *stype;
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struct streams_xattr_config *config;
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SMB_VFS_HANDLE_GET_DATA(handle, config, struct streams_xattr_config,
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return NT_STATUS_UNSUCCESSFUL);
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sname = talloc_strdup(ctx, stream_name + 1);
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if (sname == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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/*
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* With vfs_fruit option "fruit:encoding = native" we're
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* already converting stream names that contain illegal NTFS
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* characters from their on-the-wire Unicode Private Range
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* encoding to their native ASCII representation.
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*
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* As as result the name of xattrs storing the streams (via
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* vfs_streams_xattr) may contain a colon, so we have to use
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* strrchr_m() instead of strchr_m() for matching the stream
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* type suffix.
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*
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* In check_path_syntax() we've already ensured the streamname
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* we got from the client is valid.
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*/
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stype = strrchr_m(sname, ':');
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if (stype) {
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/*
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* We only support one stream type: "$DATA"
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*/
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if (strcasecmp_m(stype, ":$DATA") != 0) {
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talloc_free(sname);
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return NT_STATUS_INVALID_PARAMETER;
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}
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/* Split name and type */
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stype[0] = '\0';
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}
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*xattr_name = talloc_asprintf(ctx, "%s%s%s",
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config->prefix,
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sname,
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config->store_stream_type ? ":$DATA" : "");
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if (*xattr_name == NULL) {
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talloc_free(sname);
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return NT_STATUS_NO_MEMORY;
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}
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DEBUG(10, ("xattr_name: %s, stream_name: %s\n", *xattr_name,
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stream_name));
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talloc_free(sname);
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return NT_STATUS_OK;
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}
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static bool streams_xattr_recheck(struct stream_io *sio)
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{
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NTSTATUS status;
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char *xattr_name = NULL;
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if (sio->fsp->fsp_name == sio->fsp_name_ptr) {
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return true;
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}
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if (sio->fsp->fsp_name->stream_name == NULL) {
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/* how can this happen */
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errno = EINVAL;
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return false;
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}
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status = streams_xattr_get_name(sio->handle, talloc_tos(),
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sio->fsp->fsp_name->stream_name,
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&xattr_name);
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if (!NT_STATUS_IS_OK(status)) {
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return false;
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}
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TALLOC_FREE(sio->xattr_name);
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TALLOC_FREE(sio->base);
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sio->xattr_name = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp),
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xattr_name);
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sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp),
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sio->fsp->fsp_name->base_name);
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sio->fsp_name_ptr = sio->fsp->fsp_name;
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TALLOC_FREE(xattr_name);
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if ((sio->xattr_name == NULL) || (sio->base == NULL)) {
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return false;
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}
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return true;
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}
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/**
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* Helper to stat/lstat the base file of an smb_fname.
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*/
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static int streams_xattr_stat_base(vfs_handle_struct *handle,
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struct smb_filename *smb_fname,
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bool follow_links)
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{
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char *tmp_stream_name;
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int result;
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tmp_stream_name = smb_fname->stream_name;
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smb_fname->stream_name = NULL;
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if (follow_links) {
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result = SMB_VFS_NEXT_STAT(handle, smb_fname);
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} else {
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result = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
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}
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smb_fname->stream_name = tmp_stream_name;
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return result;
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}
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static int streams_xattr_fstat(vfs_handle_struct *handle, files_struct *fsp,
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SMB_STRUCT_STAT *sbuf)
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{
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struct smb_filename *smb_fname_base = NULL;
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int ret = -1;
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struct stream_io *io = (struct stream_io *)
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VFS_FETCH_FSP_EXTENSION(handle, fsp);
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if (io == NULL || fsp->base_fsp == NULL) {
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return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
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}
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DBG_DEBUG("streams_xattr_fstat called for %s\n", fsp_str_dbg(io->fsp));
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if (!streams_xattr_recheck(io)) {
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return -1;
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}
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/* Create an smb_filename with stream_name == NULL. */
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smb_fname_base = synthetic_smb_fname(talloc_tos(),
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io->base,
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NULL,
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NULL,
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fsp->fsp_name->flags);
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if (smb_fname_base == NULL) {
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errno = ENOMEM;
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return -1;
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}
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if (smb_fname_base->flags & SMB_FILENAME_POSIX_PATH) {
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ret = SMB_VFS_LSTAT(handle->conn, smb_fname_base);
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} else {
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ret = SMB_VFS_STAT(handle->conn, smb_fname_base);
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}
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*sbuf = smb_fname_base->st;
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if (ret == -1) {
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TALLOC_FREE(smb_fname_base);
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return -1;
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}
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sbuf->st_ex_size = get_xattr_size(handle->conn,
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smb_fname_base, io->xattr_name);
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if (sbuf->st_ex_size == -1) {
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TALLOC_FREE(smb_fname_base);
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SET_STAT_INVALID(*sbuf);
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return -1;
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}
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DEBUG(10, ("sbuf->st_ex_size = %d\n", (int)sbuf->st_ex_size));
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sbuf->st_ex_ino = stream_inode(sbuf, io->xattr_name);
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sbuf->st_ex_mode &= ~S_IFMT;
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sbuf->st_ex_mode &= ~S_IFDIR;
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sbuf->st_ex_mode |= S_IFREG;
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sbuf->st_ex_blocks = sbuf->st_ex_size / STAT_ST_BLOCKSIZE + 1;
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TALLOC_FREE(smb_fname_base);
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return 0;
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}
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static int streams_xattr_stat(vfs_handle_struct *handle,
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struct smb_filename *smb_fname)
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{
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NTSTATUS status;
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int result = -1;
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char *xattr_name = NULL;
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if (!is_ntfs_stream_smb_fname(smb_fname)) {
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return SMB_VFS_NEXT_STAT(handle, smb_fname);
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}
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/* Note if lp_posix_paths() is true, we can never
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* get here as is_ntfs_stream_smb_fname() is
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* always false. So we never need worry about
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* not following links here. */
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/* If the default stream is requested, just stat the base file. */
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if (is_ntfs_default_stream_smb_fname(smb_fname)) {
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return streams_xattr_stat_base(handle, smb_fname, true);
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}
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/* Populate the stat struct with info from the base file. */
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if (streams_xattr_stat_base(handle, smb_fname, true) == -1) {
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return -1;
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}
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/* Derive the xattr name to lookup. */
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status = streams_xattr_get_name(handle, talloc_tos(),
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smb_fname->stream_name, &xattr_name);
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if (!NT_STATUS_IS_OK(status)) {
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errno = map_errno_from_nt_status(status);
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return -1;
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}
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/* Augment the base file's stat information before returning. */
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smb_fname->st.st_ex_size = get_xattr_size(handle->conn,
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smb_fname,
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xattr_name);
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if (smb_fname->st.st_ex_size == -1) {
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SET_STAT_INVALID(smb_fname->st);
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errno = ENOENT;
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result = -1;
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goto fail;
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}
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smb_fname->st.st_ex_ino = stream_inode(&smb_fname->st, xattr_name);
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smb_fname->st.st_ex_mode &= ~S_IFMT;
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smb_fname->st.st_ex_mode &= ~S_IFDIR;
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smb_fname->st.st_ex_mode |= S_IFREG;
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smb_fname->st.st_ex_blocks =
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smb_fname->st.st_ex_size / STAT_ST_BLOCKSIZE + 1;
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result = 0;
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fail:
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TALLOC_FREE(xattr_name);
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return result;
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}
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static int streams_xattr_lstat(vfs_handle_struct *handle,
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struct smb_filename *smb_fname)
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{
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NTSTATUS status;
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int result = -1;
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char *xattr_name = NULL;
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|
|
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if (!is_ntfs_stream_smb_fname(smb_fname)) {
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return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
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}
|
|
|
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/* If the default stream is requested, just stat the base file. */
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if (is_ntfs_default_stream_smb_fname(smb_fname)) {
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return streams_xattr_stat_base(handle, smb_fname, false);
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}
|
|
|
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/* Populate the stat struct with info from the base file. */
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if (streams_xattr_stat_base(handle, smb_fname, false) == -1) {
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return -1;
|
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}
|
|
|
|
/* Derive the xattr name to lookup. */
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status = streams_xattr_get_name(handle, talloc_tos(),
|
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smb_fname->stream_name, &xattr_name);
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if (!NT_STATUS_IS_OK(status)) {
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errno = map_errno_from_nt_status(status);
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return -1;
|
|
}
|
|
|
|
/* Augment the base file's stat information before returning. */
|
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smb_fname->st.st_ex_size = get_xattr_size(handle->conn,
|
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smb_fname,
|
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xattr_name);
|
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if (smb_fname->st.st_ex_size == -1) {
|
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SET_STAT_INVALID(smb_fname->st);
|
|
errno = ENOENT;
|
|
result = -1;
|
|
goto fail;
|
|
}
|
|
|
|
smb_fname->st.st_ex_ino = stream_inode(&smb_fname->st, xattr_name);
|
|
smb_fname->st.st_ex_mode &= ~S_IFMT;
|
|
smb_fname->st.st_ex_mode |= S_IFREG;
|
|
smb_fname->st.st_ex_blocks =
|
|
smb_fname->st.st_ex_size / STAT_ST_BLOCKSIZE + 1;
|
|
|
|
result = 0;
|
|
|
|
fail:
|
|
TALLOC_FREE(xattr_name);
|
|
return result;
|
|
}
|
|
|
|
static int streams_xattr_open(vfs_handle_struct *handle,
|
|
struct smb_filename *smb_fname,
|
|
files_struct *fsp, int flags, mode_t mode)
|
|
{
|
|
NTSTATUS status;
|
|
struct streams_xattr_config *config = NULL;
|
|
struct stream_io *sio = NULL;
|
|
struct ea_struct ea;
|
|
char *xattr_name = NULL;
|
|
int pipe_fds[2];
|
|
int fakefd = -1;
|
|
int ret;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, config, struct streams_xattr_config,
|
|
return -1);
|
|
|
|
DEBUG(10, ("streams_xattr_open called for %s with flags 0x%x\n",
|
|
smb_fname_str_dbg(smb_fname), flags));
|
|
|
|
if (!is_ntfs_stream_smb_fname(smb_fname)) {
|
|
return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
|
|
}
|
|
|
|
/* If the default stream is requested, just open the base file. */
|
|
if (is_ntfs_default_stream_smb_fname(smb_fname)) {
|
|
char *tmp_stream_name;
|
|
|
|
tmp_stream_name = smb_fname->stream_name;
|
|
smb_fname->stream_name = NULL;
|
|
|
|
ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
|
|
|
|
smb_fname->stream_name = tmp_stream_name;
|
|
|
|
return ret;
|
|
}
|
|
|
|
status = streams_xattr_get_name(handle, talloc_tos(),
|
|
smb_fname->stream_name, &xattr_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = map_errno_from_nt_status(status);
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Return a valid fd, but ensure any attempt to use it returns an error
|
|
* (EPIPE).
|
|
*/
|
|
ret = pipe(pipe_fds);
|
|
if (ret != 0) {
|
|
goto fail;
|
|
}
|
|
|
|
close(pipe_fds[1]);
|
|
pipe_fds[1] = -1;
|
|
fakefd = pipe_fds[0];
|
|
|
|
status = get_ea_value(talloc_tos(), handle->conn, NULL,
|
|
smb_fname, xattr_name, &ea);
|
|
|
|
DEBUG(10, ("get_ea_value returned %s\n", nt_errstr(status)));
|
|
|
|
if (!NT_STATUS_IS_OK(status)
|
|
&& !NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
|
|
/*
|
|
* The base file is not there. This is an error even if we got
|
|
* O_CREAT, the higher levels should have created the base
|
|
* file for us.
|
|
*/
|
|
DEBUG(10, ("streams_xattr_open: base file %s not around, "
|
|
"returning ENOENT\n", smb_fname->base_name));
|
|
errno = ENOENT;
|
|
goto fail;
|
|
}
|
|
|
|
if ((!NT_STATUS_IS_OK(status) && (flags & O_CREAT)) ||
|
|
(flags & O_TRUNC)) {
|
|
/*
|
|
* The attribute does not exist or needs to be truncated
|
|
*/
|
|
|
|
/*
|
|
* Darn, xattrs need at least 1 byte
|
|
*/
|
|
char null = '\0';
|
|
|
|
DEBUG(10, ("creating or truncating attribute %s on file %s\n",
|
|
xattr_name, smb_fname->base_name));
|
|
|
|
ret = SMB_VFS_SETXATTR(fsp->conn,
|
|
smb_fname,
|
|
xattr_name,
|
|
&null, sizeof(null),
|
|
flags & O_EXCL ? XATTR_CREATE : 0);
|
|
if (ret != 0) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
sio = VFS_ADD_FSP_EXTENSION(handle, fsp, struct stream_io, NULL);
|
|
if (sio == NULL) {
|
|
errno = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sio->xattr_name = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(handle, fsp),
|
|
xattr_name);
|
|
/*
|
|
* so->base needs to be a copy of fsp->fsp_name->base_name,
|
|
* making it identical to streams_xattr_recheck(). If the
|
|
* open is changing directories, fsp->fsp_name->base_name
|
|
* will be the full path from the share root, whilst
|
|
* smb_fname will be relative to the $cwd.
|
|
*/
|
|
sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(handle, fsp),
|
|
fsp->fsp_name->base_name);
|
|
sio->fsp_name_ptr = fsp->fsp_name;
|
|
sio->handle = handle;
|
|
sio->fsp = fsp;
|
|
|
|
if ((sio->xattr_name == NULL) || (sio->base == NULL)) {
|
|
errno = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
return fakefd;
|
|
|
|
fail:
|
|
if (fakefd >= 0) {
|
|
close(fakefd);
|
|
fakefd = -1;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int streams_xattr_unlink(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname)
|
|
{
|
|
NTSTATUS status;
|
|
int ret = -1;
|
|
char *xattr_name = NULL;
|
|
|
|
if (!is_ntfs_stream_smb_fname(smb_fname)) {
|
|
return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
|
|
}
|
|
|
|
/* If the default stream is requested, just open the base file. */
|
|
if (is_ntfs_default_stream_smb_fname(smb_fname)) {
|
|
struct smb_filename *smb_fname_base = NULL;
|
|
|
|
smb_fname_base = cp_smb_filename(talloc_tos(), smb_fname);
|
|
if (smb_fname_base == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_base);
|
|
|
|
TALLOC_FREE(smb_fname_base);
|
|
return ret;
|
|
}
|
|
|
|
status = streams_xattr_get_name(handle, talloc_tos(),
|
|
smb_fname->stream_name, &xattr_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = map_errno_from_nt_status(status);
|
|
goto fail;
|
|
}
|
|
|
|
ret = SMB_VFS_REMOVEXATTR(handle->conn, smb_fname, xattr_name);
|
|
|
|
if ((ret == -1) && (errno == ENOATTR)) {
|
|
errno = ENOENT;
|
|
goto fail;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
fail:
|
|
TALLOC_FREE(xattr_name);
|
|
return ret;
|
|
}
|
|
|
|
static int streams_xattr_rename(vfs_handle_struct *handle,
|
|
const struct smb_filename *smb_fname_src,
|
|
const struct smb_filename *smb_fname_dst)
|
|
{
|
|
NTSTATUS status;
|
|
int ret = -1;
|
|
char *src_xattr_name = NULL;
|
|
char *dst_xattr_name = NULL;
|
|
bool src_is_stream, dst_is_stream;
|
|
ssize_t oret;
|
|
ssize_t nret;
|
|
struct ea_struct ea;
|
|
|
|
src_is_stream = is_ntfs_stream_smb_fname(smb_fname_src);
|
|
dst_is_stream = is_ntfs_stream_smb_fname(smb_fname_dst);
|
|
|
|
if (!src_is_stream && !dst_is_stream) {
|
|
return SMB_VFS_NEXT_RENAME(handle, smb_fname_src,
|
|
smb_fname_dst);
|
|
}
|
|
|
|
/* For now don't allow renames from or to the default stream. */
|
|
if (is_ntfs_default_stream_smb_fname(smb_fname_src) ||
|
|
is_ntfs_default_stream_smb_fname(smb_fname_dst)) {
|
|
errno = ENOSYS;
|
|
goto done;
|
|
}
|
|
|
|
/* Don't rename if the streams are identical. */
|
|
if (strcasecmp_m(smb_fname_src->stream_name,
|
|
smb_fname_dst->stream_name) == 0) {
|
|
goto done;
|
|
}
|
|
|
|
/* Get the xattr names. */
|
|
status = streams_xattr_get_name(handle, talloc_tos(),
|
|
smb_fname_src->stream_name,
|
|
&src_xattr_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = map_errno_from_nt_status(status);
|
|
goto fail;
|
|
}
|
|
status = streams_xattr_get_name(handle, talloc_tos(),
|
|
smb_fname_dst->stream_name,
|
|
&dst_xattr_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = map_errno_from_nt_status(status);
|
|
goto fail;
|
|
}
|
|
|
|
/* read the old stream */
|
|
status = get_ea_value(talloc_tos(), handle->conn, NULL,
|
|
smb_fname_src, src_xattr_name, &ea);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = ENOENT;
|
|
goto fail;
|
|
}
|
|
|
|
/* (over)write the new stream */
|
|
nret = SMB_VFS_SETXATTR(handle->conn, smb_fname_src,
|
|
dst_xattr_name, ea.value.data, ea.value.length,
|
|
0);
|
|
if (nret < 0) {
|
|
if (errno == ENOATTR) {
|
|
errno = ENOENT;
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
/* remove the old stream */
|
|
oret = SMB_VFS_REMOVEXATTR(handle->conn, smb_fname_src,
|
|
src_xattr_name);
|
|
if (oret < 0) {
|
|
if (errno == ENOATTR) {
|
|
errno = ENOENT;
|
|
}
|
|
goto fail;
|
|
}
|
|
|
|
done:
|
|
errno = 0;
|
|
ret = 0;
|
|
fail:
|
|
TALLOC_FREE(src_xattr_name);
|
|
TALLOC_FREE(dst_xattr_name);
|
|
return ret;
|
|
}
|
|
|
|
static NTSTATUS walk_xattr_streams(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
const struct smb_filename *smb_fname,
|
|
bool (*fn)(struct ea_struct *ea,
|
|
void *private_data),
|
|
void *private_data)
|
|
{
|
|
NTSTATUS status;
|
|
char **names;
|
|
size_t i, num_names;
|
|
struct streams_xattr_config *config;
|
|
|
|
SMB_VFS_HANDLE_GET_DATA(handle, config, struct streams_xattr_config,
|
|
return NT_STATUS_UNSUCCESSFUL);
|
|
|
|
status = get_ea_names_from_file(talloc_tos(),
|
|
handle->conn,
|
|
fsp,
|
|
smb_fname,
|
|
&names,
|
|
&num_names);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
for (i=0; i<num_names; i++) {
|
|
struct ea_struct ea;
|
|
|
|
/*
|
|
* We want to check with samba_private_attr_name()
|
|
* whether the xattr name is a private one,
|
|
* unfortunately it flags xattrs that begin with the
|
|
* default streams prefix as private.
|
|
*
|
|
* By only calling samba_private_attr_name() in case
|
|
* the xattr does NOT begin with the default prefix,
|
|
* we know that if it returns 'true' it definitely one
|
|
* of our internal xattr like "user.DOSATTRIB".
|
|
*/
|
|
if (strncasecmp_m(names[i], SAMBA_XATTR_DOSSTREAM_PREFIX,
|
|
strlen(SAMBA_XATTR_DOSSTREAM_PREFIX)) != 0) {
|
|
if (samba_private_attr_name(names[i])) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (strncmp(names[i], config->prefix,
|
|
config->prefix_len) != 0) {
|
|
continue;
|
|
}
|
|
|
|
status = get_ea_value(names,
|
|
handle->conn,
|
|
NULL,
|
|
smb_fname,
|
|
names[i],
|
|
&ea);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("Could not get ea %s for file %s: %s\n",
|
|
names[i],
|
|
smb_fname->base_name,
|
|
nt_errstr(status)));
|
|
continue;
|
|
}
|
|
|
|
ea.name = talloc_asprintf(
|
|
ea.value.data, ":%s%s",
|
|
names[i] + config->prefix_len,
|
|
config->store_stream_type ? "" : ":$DATA");
|
|
if (ea.name == NULL) {
|
|
DEBUG(0, ("talloc failed\n"));
|
|
continue;
|
|
}
|
|
|
|
if (!fn(&ea, private_data)) {
|
|
TALLOC_FREE(ea.value.data);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
TALLOC_FREE(ea.value.data);
|
|
}
|
|
|
|
TALLOC_FREE(names);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,
|
|
struct stream_struct **streams,
|
|
const char *name, off_t size,
|
|
off_t alloc_size)
|
|
{
|
|
struct stream_struct *tmp;
|
|
|
|
tmp = talloc_realloc(mem_ctx, *streams, struct stream_struct,
|
|
(*num_streams)+1);
|
|
if (tmp == NULL) {
|
|
return false;
|
|
}
|
|
|
|
tmp[*num_streams].name = talloc_strdup(tmp, name);
|
|
if (tmp[*num_streams].name == NULL) {
|
|
return false;
|
|
}
|
|
|
|
tmp[*num_streams].size = size;
|
|
tmp[*num_streams].alloc_size = alloc_size;
|
|
|
|
*streams = tmp;
|
|
*num_streams += 1;
|
|
return true;
|
|
}
|
|
|
|
struct streaminfo_state {
|
|
TALLOC_CTX *mem_ctx;
|
|
vfs_handle_struct *handle;
|
|
unsigned int num_streams;
|
|
struct stream_struct *streams;
|
|
NTSTATUS status;
|
|
};
|
|
|
|
static bool collect_one_stream(struct ea_struct *ea, void *private_data)
|
|
{
|
|
struct streaminfo_state *state =
|
|
(struct streaminfo_state *)private_data;
|
|
|
|
if (!add_one_stream(state->mem_ctx,
|
|
&state->num_streams, &state->streams,
|
|
ea->name, ea->value.length-1,
|
|
smb_roundup(state->handle->conn,
|
|
ea->value.length-1))) {
|
|
state->status = NT_STATUS_NO_MEMORY;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static NTSTATUS streams_xattr_streaminfo(vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
const struct smb_filename *smb_fname,
|
|
TALLOC_CTX *mem_ctx,
|
|
unsigned int *pnum_streams,
|
|
struct stream_struct **pstreams)
|
|
{
|
|
SMB_STRUCT_STAT sbuf;
|
|
int ret;
|
|
NTSTATUS status;
|
|
struct streaminfo_state state;
|
|
|
|
ret = vfs_stat_smb_basename(handle->conn, smb_fname, &sbuf);
|
|
if (ret == -1) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
state.streams = *pstreams;
|
|
state.num_streams = *pnum_streams;
|
|
state.mem_ctx = mem_ctx;
|
|
state.handle = handle;
|
|
state.status = NT_STATUS_OK;
|
|
|
|
if (S_ISLNK(sbuf.st_ex_mode)) {
|
|
/*
|
|
* Currently we do't have SMB_VFS_LLISTXATTR
|
|
* inside the VFS which means there's no way
|
|
* to cope with a symlink when lp_posix_pathnames().
|
|
* returns true. For now ignore links.
|
|
* FIXME - by adding SMB_VFS_LLISTXATTR. JRA.
|
|
*/
|
|
status = NT_STATUS_OK;
|
|
} else {
|
|
status = walk_xattr_streams(handle, fsp, smb_fname,
|
|
collect_one_stream, &state);
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(state.streams);
|
|
return status;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(state.status)) {
|
|
TALLOC_FREE(state.streams);
|
|
return state.status;
|
|
}
|
|
|
|
*pnum_streams = state.num_streams;
|
|
*pstreams = state.streams;
|
|
|
|
return SMB_VFS_NEXT_STREAMINFO(handle,
|
|
fsp,
|
|
smb_fname,
|
|
mem_ctx,
|
|
pnum_streams,
|
|
pstreams);
|
|
}
|
|
|
|
static uint32_t streams_xattr_fs_capabilities(struct vfs_handle_struct *handle,
|
|
enum timestamp_set_resolution *p_ts_res)
|
|
{
|
|
return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res) | FILE_NAMED_STREAMS;
|
|
}
|
|
|
|
static int streams_xattr_connect(vfs_handle_struct *handle,
|
|
const char *service, const char *user)
|
|
{
|
|
struct streams_xattr_config *config;
|
|
const char *default_prefix = SAMBA_XATTR_DOSSTREAM_PREFIX;
|
|
const char *prefix;
|
|
int rc;
|
|
|
|
rc = SMB_VFS_NEXT_CONNECT(handle, service, user);
|
|
if (rc != 0) {
|
|
return rc;
|
|
}
|
|
|
|
config = talloc_zero(handle->conn, struct streams_xattr_config);
|
|
if (config == NULL) {
|
|
DEBUG(1, ("talloc_zero() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
prefix = lp_parm_const_string(SNUM(handle->conn),
|
|
"streams_xattr", "prefix",
|
|
default_prefix);
|
|
config->prefix = talloc_strdup(config, prefix);
|
|
if (config->prefix == NULL) {
|
|
DEBUG(1, ("talloc_strdup() failed\n"));
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
config->prefix_len = strlen(config->prefix);
|
|
DEBUG(10, ("streams_xattr using stream prefix: %s\n", config->prefix));
|
|
|
|
config->store_stream_type = lp_parm_bool(SNUM(handle->conn),
|
|
"streams_xattr",
|
|
"store_stream_type",
|
|
true);
|
|
|
|
SMB_VFS_HANDLE_SET_DATA(handle, config,
|
|
NULL, struct stream_xattr_config,
|
|
return -1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t streams_xattr_pwrite(vfs_handle_struct *handle,
|
|
files_struct *fsp, const void *data,
|
|
size_t n, off_t offset)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
struct ea_struct ea;
|
|
NTSTATUS status;
|
|
struct smb_filename *smb_fname_base = NULL;
|
|
int ret;
|
|
|
|
DEBUG(10, ("streams_xattr_pwrite called for %d bytes\n", (int)n));
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
|
|
}
|
|
|
|
if (!streams_xattr_recheck(sio)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Create an smb_filename with stream_name == NULL. */
|
|
smb_fname_base = synthetic_smb_fname(talloc_tos(),
|
|
sio->base,
|
|
NULL,
|
|
NULL,
|
|
fsp->fsp_name->flags);
|
|
if (smb_fname_base == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
status = get_ea_value(talloc_tos(), handle->conn, NULL,
|
|
smb_fname_base, sio->xattr_name, &ea);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return -1;
|
|
}
|
|
|
|
if ((offset + n) > ea.value.length-1) {
|
|
uint8_t *tmp;
|
|
|
|
tmp = talloc_realloc(talloc_tos(), ea.value.data, uint8_t,
|
|
offset + n + 1);
|
|
|
|
if (tmp == NULL) {
|
|
TALLOC_FREE(ea.value.data);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
ea.value.data = tmp;
|
|
ea.value.length = offset + n + 1;
|
|
ea.value.data[offset+n] = 0;
|
|
}
|
|
|
|
memcpy(ea.value.data + offset, data, n);
|
|
|
|
ret = SMB_VFS_SETXATTR(fsp->conn,
|
|
fsp->fsp_name,
|
|
sio->xattr_name,
|
|
ea.value.data, ea.value.length, 0);
|
|
TALLOC_FREE(ea.value.data);
|
|
|
|
if (ret == -1) {
|
|
return -1;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
static ssize_t streams_xattr_pread(vfs_handle_struct *handle,
|
|
files_struct *fsp, void *data,
|
|
size_t n, off_t offset)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
struct ea_struct ea;
|
|
NTSTATUS status;
|
|
size_t length, overlap;
|
|
struct smb_filename *smb_fname_base = NULL;
|
|
|
|
DEBUG(10, ("streams_xattr_pread: offset=%d, size=%d\n",
|
|
(int)offset, (int)n));
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
|
|
}
|
|
|
|
if (!streams_xattr_recheck(sio)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Create an smb_filename with stream_name == NULL. */
|
|
smb_fname_base = synthetic_smb_fname(talloc_tos(),
|
|
sio->base,
|
|
NULL,
|
|
NULL,
|
|
fsp->fsp_name->flags);
|
|
if (smb_fname_base == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
status = get_ea_value(talloc_tos(), handle->conn, NULL,
|
|
smb_fname_base, sio->xattr_name, &ea);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return -1;
|
|
}
|
|
|
|
length = ea.value.length-1;
|
|
|
|
DEBUG(10, ("streams_xattr_pread: get_ea_value returned %d bytes\n",
|
|
(int)length));
|
|
|
|
/* Attempt to read past EOF. */
|
|
if (length <= offset) {
|
|
return 0;
|
|
}
|
|
|
|
overlap = (offset + n) > length ? (length - offset) : n;
|
|
memcpy(data, ea.value.data + offset, overlap);
|
|
|
|
TALLOC_FREE(ea.value.data);
|
|
return overlap;
|
|
}
|
|
|
|
struct streams_xattr_pread_state {
|
|
ssize_t nread;
|
|
struct vfs_aio_state vfs_aio_state;
|
|
};
|
|
|
|
static void streams_xattr_pread_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *streams_xattr_pread_send(
|
|
struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct files_struct *fsp,
|
|
void *data,
|
|
size_t n, off_t offset)
|
|
{
|
|
struct tevent_req *req = NULL;
|
|
struct tevent_req *subreq = NULL;
|
|
struct streams_xattr_pread_state *state = NULL;
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct streams_xattr_pread_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (sio == NULL) {
|
|
subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp,
|
|
data, n, offset);
|
|
if (tevent_req_nomem(req, subreq)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, streams_xattr_pread_done, req);
|
|
return req;
|
|
}
|
|
|
|
state->nread = SMB_VFS_PREAD(fsp, data, n, offset);
|
|
if (state->nread != n) {
|
|
if (state->nread != -1) {
|
|
errno = EIO;
|
|
}
|
|
tevent_req_error(req, errno);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static void streams_xattr_pread_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct streams_xattr_pread_state *state = tevent_req_data(
|
|
req, struct streams_xattr_pread_state);
|
|
|
|
state->nread = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
|
|
TALLOC_FREE(subreq);
|
|
|
|
if (tevent_req_error(req, state->vfs_aio_state.error)) {
|
|
return;
|
|
}
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static ssize_t streams_xattr_pread_recv(struct tevent_req *req,
|
|
struct vfs_aio_state *vfs_aio_state)
|
|
{
|
|
struct streams_xattr_pread_state *state = tevent_req_data(
|
|
req, struct streams_xattr_pread_state);
|
|
|
|
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
|
|
return -1;
|
|
}
|
|
|
|
*vfs_aio_state = state->vfs_aio_state;
|
|
return state->nread;
|
|
}
|
|
|
|
struct streams_xattr_pwrite_state {
|
|
ssize_t nwritten;
|
|
struct vfs_aio_state vfs_aio_state;
|
|
};
|
|
|
|
static void streams_xattr_pwrite_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *streams_xattr_pwrite_send(
|
|
struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct files_struct *fsp,
|
|
const void *data,
|
|
size_t n, off_t offset)
|
|
{
|
|
struct tevent_req *req = NULL;
|
|
struct tevent_req *subreq = NULL;
|
|
struct streams_xattr_pwrite_state *state = NULL;
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct streams_xattr_pwrite_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (sio == NULL) {
|
|
subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp,
|
|
data, n, offset);
|
|
if (tevent_req_nomem(req, subreq)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, streams_xattr_pwrite_done, req);
|
|
return req;
|
|
}
|
|
|
|
state->nwritten = SMB_VFS_PWRITE(fsp, data, n, offset);
|
|
if (state->nwritten != n) {
|
|
if (state->nwritten != -1) {
|
|
errno = EIO;
|
|
}
|
|
tevent_req_error(req, errno);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static void streams_xattr_pwrite_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct streams_xattr_pwrite_state *state = tevent_req_data(
|
|
req, struct streams_xattr_pwrite_state);
|
|
|
|
state->nwritten = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
|
|
TALLOC_FREE(subreq);
|
|
|
|
if (tevent_req_error(req, state->vfs_aio_state.error)) {
|
|
return;
|
|
}
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static ssize_t streams_xattr_pwrite_recv(struct tevent_req *req,
|
|
struct vfs_aio_state *vfs_aio_state)
|
|
{
|
|
struct streams_xattr_pwrite_state *state = tevent_req_data(
|
|
req, struct streams_xattr_pwrite_state);
|
|
|
|
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
|
|
return -1;
|
|
}
|
|
|
|
*vfs_aio_state = state->vfs_aio_state;
|
|
return state->nwritten;
|
|
}
|
|
|
|
static int streams_xattr_ftruncate(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
off_t offset)
|
|
{
|
|
int ret;
|
|
uint8_t *tmp;
|
|
struct ea_struct ea;
|
|
NTSTATUS status;
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
struct smb_filename *smb_fname_base = NULL;
|
|
|
|
DEBUG(10, ("streams_xattr_ftruncate called for file %s offset %.0f\n",
|
|
fsp_str_dbg(fsp), (double)offset));
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
|
|
}
|
|
|
|
if (!streams_xattr_recheck(sio)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Create an smb_filename with stream_name == NULL. */
|
|
smb_fname_base = synthetic_smb_fname(talloc_tos(),
|
|
sio->base,
|
|
NULL,
|
|
NULL,
|
|
fsp->fsp_name->flags);
|
|
if (smb_fname_base == NULL) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
status = get_ea_value(talloc_tos(), handle->conn, NULL,
|
|
smb_fname_base, sio->xattr_name, &ea);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return -1;
|
|
}
|
|
|
|
tmp = talloc_realloc(talloc_tos(), ea.value.data, uint8_t,
|
|
offset + 1);
|
|
|
|
if (tmp == NULL) {
|
|
TALLOC_FREE(ea.value.data);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
/* Did we expand ? */
|
|
if (ea.value.length < offset + 1) {
|
|
memset(&tmp[ea.value.length], '\0',
|
|
offset + 1 - ea.value.length);
|
|
}
|
|
|
|
ea.value.data = tmp;
|
|
ea.value.length = offset + 1;
|
|
ea.value.data[offset] = 0;
|
|
|
|
ret = SMB_VFS_SETXATTR(fsp->conn,
|
|
fsp->fsp_name,
|
|
sio->xattr_name,
|
|
ea.value.data, ea.value.length, 0);
|
|
TALLOC_FREE(ea.value.data);
|
|
|
|
if (ret == -1) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int streams_xattr_fallocate(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
uint32_t mode,
|
|
off_t offset,
|
|
off_t len)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
DEBUG(10, ("streams_xattr_fallocate called for file %s offset %.0f"
|
|
"len = %.0f\n",
|
|
fsp_str_dbg(fsp), (double)offset, (double)len));
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
|
|
}
|
|
|
|
if (!streams_xattr_recheck(sio)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Let the pwrite code path handle it. */
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
|
|
static int streams_xattr_fchown(vfs_handle_struct *handle, files_struct *fsp,
|
|
uid_t uid, gid_t gid)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FCHOWN(handle, fsp, uid, gid);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int streams_xattr_fchmod(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
mode_t mode)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t streams_xattr_fgetxattr(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
const char *name,
|
|
void *value,
|
|
size_t size)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
|
|
}
|
|
|
|
errno = ENOTSUP;
|
|
return -1;
|
|
}
|
|
|
|
static ssize_t streams_xattr_flistxattr(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
char *list,
|
|
size_t size)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FLISTXATTR(handle, fsp, list, size);
|
|
}
|
|
|
|
errno = ENOTSUP;
|
|
return -1;
|
|
}
|
|
|
|
static int streams_xattr_fremovexattr(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
const char *name)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
|
|
}
|
|
|
|
errno = ENOTSUP;
|
|
return -1;
|
|
}
|
|
|
|
static int streams_xattr_fsetxattr(struct vfs_handle_struct *handle,
|
|
struct files_struct *fsp,
|
|
const char *name,
|
|
const void *value,
|
|
size_t size,
|
|
int flags)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value,
|
|
size, flags);
|
|
}
|
|
|
|
errno = ENOTSUP;
|
|
return -1;
|
|
}
|
|
|
|
static int streams_xattr_fchmod_acl(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
mode_t mode)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static SMB_ACL_T streams_xattr_sys_acl_get_fd(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
TALLOC_CTX *mem_ctx)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx);
|
|
}
|
|
|
|
return SMB_VFS_NEXT_SYS_ACL_GET_FILE(
|
|
handle, fsp->base_fsp->fsp_name,
|
|
SMB_ACL_TYPE_ACCESS, mem_ctx);
|
|
}
|
|
|
|
static int streams_xattr_sys_acl_set_fd(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
SMB_ACL_T theacl)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, theacl);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int streams_xattr_sys_acl_blob_get_fd(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **blob_description,
|
|
DATA_BLOB *blob)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
|
|
blob_description, blob);
|
|
}
|
|
|
|
return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(
|
|
handle, fsp->base_fsp->fsp_name, mem_ctx,
|
|
blob_description, blob);
|
|
}
|
|
|
|
static NTSTATUS streams_xattr_fget_nt_acl(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
uint32_t security_info,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct security_descriptor **ppdesc)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info,
|
|
mem_ctx, ppdesc);
|
|
}
|
|
|
|
return SMB_VFS_NEXT_GET_NT_ACL(handle, fsp->base_fsp->fsp_name,
|
|
security_info, mem_ctx, ppdesc);
|
|
}
|
|
|
|
static NTSTATUS streams_xattr_fset_nt_acl(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
uint32_t security_info_sent,
|
|
const struct security_descriptor *psd)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp,
|
|
security_info_sent, psd);
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
struct streams_xattr_fsync_state {
|
|
int ret;
|
|
struct vfs_aio_state vfs_aio_state;
|
|
};
|
|
|
|
static void streams_xattr_fsync_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *streams_xattr_fsync_send(
|
|
struct vfs_handle_struct *handle,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct files_struct *fsp)
|
|
{
|
|
struct tevent_req *req = NULL;
|
|
struct tevent_req *subreq = NULL;
|
|
struct streams_xattr_fsync_state *state = NULL;
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct streams_xattr_fsync_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (sio == NULL) {
|
|
subreq = SMB_VFS_NEXT_FSYNC_SEND(state, ev, handle, fsp);
|
|
if (tevent_req_nomem(req, subreq)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, streams_xattr_fsync_done, req);
|
|
return req;
|
|
}
|
|
|
|
/*
|
|
* There's no pathname based sync variant and we don't have access to
|
|
* the basefile handle, so we can't do anything here.
|
|
*/
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static void streams_xattr_fsync_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct streams_xattr_fsync_state *state = tevent_req_data(
|
|
req, struct streams_xattr_fsync_state);
|
|
|
|
state->ret = SMB_VFS_FSYNC_RECV(subreq, &state->vfs_aio_state);
|
|
TALLOC_FREE(subreq);
|
|
if (state->ret != 0) {
|
|
tevent_req_error(req, errno);
|
|
return;
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static int streams_xattr_fsync_recv(struct tevent_req *req,
|
|
struct vfs_aio_state *vfs_aio_state)
|
|
{
|
|
struct streams_xattr_fsync_state *state = tevent_req_data(
|
|
req, struct streams_xattr_fsync_state);
|
|
|
|
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
|
|
return -1;
|
|
}
|
|
|
|
*vfs_aio_state = state->vfs_aio_state;
|
|
return state->ret;
|
|
}
|
|
|
|
static bool streams_xattr_lock(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
int op,
|
|
off_t offset,
|
|
off_t count,
|
|
int type)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_LOCK(handle, fsp, op, offset, count, type);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool streams_xattr_getlock(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
off_t *poffset,
|
|
off_t *pcount,
|
|
int *ptype,
|
|
pid_t *ppid)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_GETLOCK(handle, fsp, poffset,
|
|
pcount, ptype, ppid);
|
|
}
|
|
|
|
errno = ENOTSUP;
|
|
return false;
|
|
}
|
|
|
|
static int streams_xattr_kernel_flock(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
uint32_t share_mode,
|
|
uint32_t access_mask)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_KERNEL_FLOCK(handle, fsp,
|
|
share_mode, access_mask);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int streams_xattr_linux_setlease(vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
int leasetype)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_LINUX_SETLEASE(handle, fsp, leasetype);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool streams_xattr_strict_lock_check(struct vfs_handle_struct *handle,
|
|
files_struct *fsp,
|
|
struct lock_struct *plock)
|
|
{
|
|
struct stream_io *sio =
|
|
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
|
|
|
if (sio == NULL) {
|
|
return SMB_VFS_NEXT_STRICT_LOCK_CHECK(handle, fsp, plock);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct vfs_fn_pointers vfs_streams_xattr_fns = {
|
|
.fs_capabilities_fn = streams_xattr_fs_capabilities,
|
|
.connect_fn = streams_xattr_connect,
|
|
.open_fn = streams_xattr_open,
|
|
.stat_fn = streams_xattr_stat,
|
|
.fstat_fn = streams_xattr_fstat,
|
|
.lstat_fn = streams_xattr_lstat,
|
|
.pread_fn = streams_xattr_pread,
|
|
.pwrite_fn = streams_xattr_pwrite,
|
|
.pread_send_fn = streams_xattr_pread_send,
|
|
.pread_recv_fn = streams_xattr_pread_recv,
|
|
.pwrite_send_fn = streams_xattr_pwrite_send,
|
|
.pwrite_recv_fn = streams_xattr_pwrite_recv,
|
|
.unlink_fn = streams_xattr_unlink,
|
|
.rename_fn = streams_xattr_rename,
|
|
.ftruncate_fn = streams_xattr_ftruncate,
|
|
.fallocate_fn = streams_xattr_fallocate,
|
|
.streaminfo_fn = streams_xattr_streaminfo,
|
|
|
|
.fsync_send_fn = streams_xattr_fsync_send,
|
|
.fsync_recv_fn = streams_xattr_fsync_recv,
|
|
|
|
.lock_fn = streams_xattr_lock,
|
|
.getlock_fn = streams_xattr_getlock,
|
|
.kernel_flock_fn = streams_xattr_kernel_flock,
|
|
.linux_setlease_fn = streams_xattr_linux_setlease,
|
|
.strict_lock_check_fn = streams_xattr_strict_lock_check,
|
|
|
|
.fchown_fn = streams_xattr_fchown,
|
|
.fchmod_fn = streams_xattr_fchmod,
|
|
|
|
.fgetxattr_fn = streams_xattr_fgetxattr,
|
|
.flistxattr_fn = streams_xattr_flistxattr,
|
|
.fremovexattr_fn = streams_xattr_fremovexattr,
|
|
.fsetxattr_fn = streams_xattr_fsetxattr,
|
|
|
|
.fchmod_acl_fn = streams_xattr_fchmod_acl,
|
|
|
|
.sys_acl_get_fd_fn = streams_xattr_sys_acl_get_fd,
|
|
.sys_acl_blob_get_fd_fn = streams_xattr_sys_acl_blob_get_fd,
|
|
.sys_acl_set_fd_fn = streams_xattr_sys_acl_set_fd,
|
|
|
|
.fget_nt_acl_fn = streams_xattr_fget_nt_acl,
|
|
.fset_nt_acl_fn = streams_xattr_fset_nt_acl,
|
|
};
|
|
|
|
static_decl_vfs;
|
|
NTSTATUS vfs_streams_xattr_init(TALLOC_CTX *ctx)
|
|
{
|
|
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "streams_xattr",
|
|
&vfs_streams_xattr_fns);
|
|
}
|