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d9a842b26f
- Attempt to use syscalls to determine max-open-files value. - Add in periodic logging when max file limit reached
3436 lines
91 KiB
C
3436 lines
91 KiB
C
/*
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Unix SMB/CIFS implementation.
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file opening and share modes
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Copyright (C) Andrew Tridgell 1992-1998
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Copyright (C) Jeremy Allison 2001-2004
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Copyright (C) Volker Lendecke 2005
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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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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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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/globals.h"
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extern const struct generic_mapping file_generic_mapping;
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struct deferred_open_record {
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bool delayed_for_oplocks;
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struct file_id id;
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};
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static NTSTATUS create_file_unixpath(connection_struct *conn,
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struct smb_request *req,
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const char *fname,
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uint32_t access_mask,
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uint32_t share_access,
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uint32_t create_disposition,
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uint32_t create_options,
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uint32_t file_attributes,
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uint32_t oplock_request,
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uint64_t allocation_size,
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struct security_descriptor *sd,
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struct ea_list *ea_list,
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files_struct **result,
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int *pinfo,
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SMB_STRUCT_STAT *psbuf);
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/****************************************************************************
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SMB1 file varient of se_access_check. Never test FILE_READ_ATTRIBUTES.
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****************************************************************************/
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NTSTATUS smb1_file_se_access_check(const struct security_descriptor *sd,
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const NT_USER_TOKEN *token,
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uint32_t access_desired,
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uint32_t *access_granted)
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{
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return se_access_check(sd,
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token,
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(access_desired & ~FILE_READ_ATTRIBUTES),
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access_granted);
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}
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/****************************************************************************
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Check if we have open rights.
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****************************************************************************/
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static NTSTATUS check_open_rights(struct connection_struct *conn,
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const char *fname,
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uint32_t access_mask,
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uint32_t *access_granted)
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{
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/* Check if we have rights to open. */
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NTSTATUS status;
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struct security_descriptor *sd;
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*access_granted = 0;
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status = SMB_VFS_GET_NT_ACL(conn, fname,
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(OWNER_SECURITY_INFORMATION |
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GROUP_SECURITY_INFORMATION |
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DACL_SECURITY_INFORMATION),&sd);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(10, ("check_open_rights: Could not get acl "
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"on %s: %s\n",
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fname,
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nt_errstr(status)));
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return status;
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}
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status = smb1_file_se_access_check(sd,
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conn->server_info->ptok,
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access_mask,
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access_granted);
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TALLOC_FREE(sd);
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DEBUG(10,("check_open_rights: file %s requesting "
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"0x%x returning 0x%x (%s)\n",
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fname,
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(unsigned int)access_mask,
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(unsigned int)*access_granted,
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nt_errstr(status) ));
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return status;
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}
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/****************************************************************************
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fd support routines - attempt to do a dos_open.
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****************************************************************************/
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static NTSTATUS fd_open(struct connection_struct *conn,
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const char *fname,
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files_struct *fsp,
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int flags,
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mode_t mode)
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{
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NTSTATUS status = NT_STATUS_OK;
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#ifdef O_NOFOLLOW
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/*
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* Never follow symlinks on a POSIX client. The
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* client should be doing this.
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*/
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if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
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flags |= O_NOFOLLOW;
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}
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#endif
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fsp->fh->fd = SMB_VFS_OPEN(conn,fname,fsp,flags,mode);
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if (fsp->fh->fd == -1) {
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status = map_nt_error_from_unix(errno);
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if (errno == EMFILE) {
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static time_t last_warned = 0L;
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if (time((time_t *) NULL) > last_warned) {
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DEBUG(0,("Too many open files, unable "
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"to open more! smbd's max "
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"open files = %d\n",
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lp_max_open_files()));
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last_warned = time((time_t *) NULL);
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}
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}
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}
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DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
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fname, flags, (int)mode, fsp->fh->fd,
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(fsp->fh->fd == -1) ? strerror(errno) : "" ));
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return status;
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}
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/****************************************************************************
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Close the file associated with a fsp.
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****************************************************************************/
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NTSTATUS fd_close(files_struct *fsp)
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{
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int ret;
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if (fsp->fh->fd == -1) {
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return NT_STATUS_OK; /* What we used to call a stat open. */
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}
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if (fsp->fh->ref_count > 1) {
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return NT_STATUS_OK; /* Shared handle. Only close last reference. */
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}
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ret = SMB_VFS_CLOSE(fsp);
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fsp->fh->fd = -1;
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if (ret == -1) {
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return map_nt_error_from_unix(errno);
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}
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return NT_STATUS_OK;
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}
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/****************************************************************************
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Change the ownership of a file to that of the parent directory.
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Do this by fd if possible.
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****************************************************************************/
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void change_file_owner_to_parent(connection_struct *conn,
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const char *inherit_from_dir,
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files_struct *fsp)
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{
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SMB_STRUCT_STAT parent_st;
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int ret;
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ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
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if (ret == -1) {
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DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
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"directory %s. Error was %s\n",
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inherit_from_dir, strerror(errno) ));
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return;
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}
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become_root();
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ret = SMB_VFS_FCHOWN(fsp, parent_st.st_uid, (gid_t)-1);
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unbecome_root();
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if (ret == -1) {
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DEBUG(0,("change_file_owner_to_parent: failed to fchown "
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"file %s to parent directory uid %u. Error "
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"was %s\n", fsp->fsp_name,
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(unsigned int)parent_st.st_uid,
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strerror(errno) ));
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}
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DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
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"parent directory uid %u.\n", fsp->fsp_name,
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(unsigned int)parent_st.st_uid ));
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}
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NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
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const char *inherit_from_dir,
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const char *fname,
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SMB_STRUCT_STAT *psbuf)
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{
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char *saved_dir = NULL;
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SMB_STRUCT_STAT sbuf;
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SMB_STRUCT_STAT parent_st;
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TALLOC_CTX *ctx = talloc_tos();
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NTSTATUS status = NT_STATUS_OK;
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int ret;
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ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
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if (ret == -1) {
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status = map_nt_error_from_unix(errno);
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DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
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"directory %s. Error was %s\n",
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inherit_from_dir, strerror(errno) ));
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return status;
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}
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/* We've already done an lstat into psbuf, and we know it's a
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directory. If we can cd into the directory and the dev/ino
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are the same then we can safely chown without races as
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we're locking the directory in place by being in it. This
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should work on any UNIX (thanks tridge :-). JRA.
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*/
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saved_dir = vfs_GetWd(ctx,conn);
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if (!saved_dir) {
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status = map_nt_error_from_unix(errno);
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DEBUG(0,("change_dir_owner_to_parent: failed to get "
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"current working directory. Error was %s\n",
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strerror(errno)));
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return status;
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}
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/* Chdir into the new path. */
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if (vfs_ChDir(conn, fname) == -1) {
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status = map_nt_error_from_unix(errno);
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DEBUG(0,("change_dir_owner_to_parent: failed to change "
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"current working directory to %s. Error "
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"was %s\n", fname, strerror(errno) ));
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goto out;
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}
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if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
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status = map_nt_error_from_unix(errno);
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DEBUG(0,("change_dir_owner_to_parent: failed to stat "
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"directory '.' (%s) Error was %s\n",
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fname, strerror(errno)));
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goto out;
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}
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/* Ensure we're pointing at the same place. */
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if (sbuf.st_dev != psbuf->st_dev ||
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sbuf.st_ino != psbuf->st_ino ||
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sbuf.st_mode != psbuf->st_mode ) {
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DEBUG(0,("change_dir_owner_to_parent: "
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"device/inode/mode on directory %s changed. "
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"Refusing to chown !\n", fname ));
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status = NT_STATUS_ACCESS_DENIED;
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goto out;
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}
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become_root();
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ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
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unbecome_root();
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if (ret == -1) {
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status = map_nt_error_from_unix(errno);
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DEBUG(10,("change_dir_owner_to_parent: failed to chown "
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"directory %s to parent directory uid %u. "
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"Error was %s\n", fname,
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(unsigned int)parent_st.st_uid, strerror(errno) ));
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goto out;
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}
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DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
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"directory %s to parent directory uid %u.\n",
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fname, (unsigned int)parent_st.st_uid ));
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out:
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vfs_ChDir(conn,saved_dir);
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return status;
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}
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/****************************************************************************
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Open a file.
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****************************************************************************/
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static NTSTATUS open_file(files_struct *fsp,
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connection_struct *conn,
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struct smb_request *req,
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const char *parent_dir,
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const char *name,
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const char *path,
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SMB_STRUCT_STAT *psbuf,
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int flags,
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mode_t unx_mode,
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uint32 access_mask, /* client requested access mask. */
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uint32 open_access_mask) /* what we're actually using in the open. */
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{
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NTSTATUS status = NT_STATUS_OK;
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int accmode = (flags & O_ACCMODE);
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int local_flags = flags;
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bool file_existed = VALID_STAT(*psbuf);
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fsp->fh->fd = -1;
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errno = EPERM;
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/* Check permissions */
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/*
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* This code was changed after seeing a client open request
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* containing the open mode of (DENY_WRITE/read-only) with
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* the 'create if not exist' bit set. The previous code
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* would fail to open the file read only on a read-only share
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* as it was checking the flags parameter directly against O_RDONLY,
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* this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
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* JRA.
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*/
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if (!CAN_WRITE(conn)) {
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/* It's a read-only share - fail if we wanted to write. */
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if(accmode != O_RDONLY) {
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DEBUG(3,("Permission denied opening %s\n", path));
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return NT_STATUS_ACCESS_DENIED;
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} else if(flags & O_CREAT) {
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/* We don't want to write - but we must make sure that
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O_CREAT doesn't create the file if we have write
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access into the directory.
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*/
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flags &= ~O_CREAT;
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local_flags &= ~O_CREAT;
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}
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}
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/*
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* This little piece of insanity is inspired by the
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* fact that an NT client can open a file for O_RDONLY,
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* but set the create disposition to FILE_EXISTS_TRUNCATE.
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* If the client *can* write to the file, then it expects to
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* truncate the file, even though it is opening for readonly.
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* Quicken uses this stupid trick in backup file creation...
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* Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
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* for helping track this one down. It didn't bite us in 2.0.x
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* as we always opened files read-write in that release. JRA.
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*/
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if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
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DEBUG(10,("open_file: truncate requested on read-only open "
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"for file %s\n", path));
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local_flags = (flags & ~O_ACCMODE)|O_RDWR;
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}
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if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
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(!file_existed && (local_flags & O_CREAT)) ||
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((local_flags & O_TRUNC) == O_TRUNC) ) {
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const char *wild;
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/*
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* We can't actually truncate here as the file may be locked.
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* open_file_ntcreate will take care of the truncate later. JRA.
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*/
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local_flags &= ~O_TRUNC;
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#if defined(O_NONBLOCK) && defined(S_ISFIFO)
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/*
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* We would block on opening a FIFO with no one else on the
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* other end. Do what we used to do and add O_NONBLOCK to the
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* open flags. JRA.
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*/
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if (file_existed && S_ISFIFO(psbuf->st_mode)) {
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local_flags |= O_NONBLOCK;
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}
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#endif
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/* Don't create files with Microsoft wildcard characters. */
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if (fsp->base_fsp) {
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/*
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* wildcard characters are allowed in stream names
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* only test the basefilename
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*/
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wild = fsp->base_fsp->fsp_name;
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} else {
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wild = path;
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}
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if ((local_flags & O_CREAT) && !file_existed &&
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ms_has_wild(wild)) {
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return NT_STATUS_OBJECT_NAME_INVALID;
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}
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/* Actually do the open */
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status = fd_open(conn, path, fsp, local_flags, unx_mode);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
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"(flags=%d)\n",
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path,nt_errstr(status),local_flags,flags));
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return status;
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}
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|
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if ((local_flags & O_CREAT) && !file_existed) {
|
|
|
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/* Inherit the ACL if required */
|
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if (lp_inherit_perms(SNUM(conn))) {
|
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inherit_access_posix_acl(conn, parent_dir, path,
|
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unx_mode);
|
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}
|
|
|
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/* Change the owner if required. */
|
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if (lp_inherit_owner(SNUM(conn))) {
|
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change_file_owner_to_parent(conn, parent_dir,
|
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fsp);
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}
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|
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notify_fname(conn, NOTIFY_ACTION_ADDED,
|
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FILE_NOTIFY_CHANGE_FILE_NAME, path);
|
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}
|
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|
|
} else {
|
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fsp->fh->fd = -1; /* What we used to call a stat open. */
|
|
if (file_existed) {
|
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uint32_t access_granted = 0;
|
|
|
|
status = check_open_rights(conn,
|
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path,
|
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access_mask,
|
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&access_granted);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
|
|
if ((access_mask & DELETE_ACCESS) &&
|
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(access_granted == DELETE_ACCESS) &&
|
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can_delete_file_in_directory(conn, path)) {
|
|
/* Were we trying to do a stat open
|
|
* for delete and didn't get DELETE
|
|
* access (only) ? Check if the
|
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* directory allows DELETE_CHILD.
|
|
* See here:
|
|
* http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
|
|
* for details. */
|
|
|
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DEBUG(10,("open_file: overrode ACCESS_DENIED "
|
|
"on file %s\n",
|
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path ));
|
|
} else {
|
|
DEBUG(10, ("open_file: Access denied on "
|
|
"file %s\n",
|
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path));
|
|
return status;
|
|
}
|
|
} else if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
|
|
fsp->posix_open &&
|
|
S_ISLNK(psbuf->st_mode)) {
|
|
/* This is a POSIX stat open for delete
|
|
* or rename on a symlink that points
|
|
* nowhere. Allow. */
|
|
DEBUG(10, ("open_file: allowing POSIX open "
|
|
"on bad symlink %s\n",
|
|
path ));
|
|
} else {
|
|
DEBUG(10, ("open_file: check_open_rights "
|
|
"on file %s returned %s\n",
|
|
path, nt_errstr(status) ));
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!file_existed) {
|
|
int ret;
|
|
|
|
if (fsp->fh->fd == -1) {
|
|
ret = SMB_VFS_STAT(conn, path, psbuf);
|
|
} else {
|
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ret = SMB_VFS_FSTAT(fsp, psbuf);
|
|
/* If we have an fd, this stat should succeed. */
|
|
if (ret == -1) {
|
|
DEBUG(0,("Error doing fstat on open file %s "
|
|
"(%s)\n", path,strerror(errno) ));
|
|
}
|
|
}
|
|
|
|
/* For a non-io open, this stat failing means file not found. JRA */
|
|
if (ret == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* POSIX allows read-only opens of directories. We don't
|
|
* want to do this (we use a different code path for this)
|
|
* so catch a directory open and return an EISDIR. JRA.
|
|
*/
|
|
|
|
if(S_ISDIR(psbuf->st_mode)) {
|
|
fd_close(fsp);
|
|
errno = EISDIR;
|
|
return NT_STATUS_FILE_IS_A_DIRECTORY;
|
|
}
|
|
|
|
fsp->mode = psbuf->st_mode;
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
|
|
fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
|
|
fsp->file_pid = req ? req->smbpid : 0;
|
|
fsp->can_lock = True;
|
|
fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
|
|
if (!CAN_WRITE(conn)) {
|
|
fsp->can_write = False;
|
|
} else {
|
|
fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
|
|
True : False;
|
|
}
|
|
fsp->print_file = False;
|
|
fsp->modified = False;
|
|
fsp->sent_oplock_break = NO_BREAK_SENT;
|
|
fsp->is_directory = False;
|
|
if (conn->aio_write_behind_list &&
|
|
is_in_path(path, conn->aio_write_behind_list, conn->case_sensitive)) {
|
|
fsp->aio_write_behind = True;
|
|
}
|
|
|
|
string_set(&fsp->fsp_name, path);
|
|
fsp->wcp = NULL; /* Write cache pointer. */
|
|
|
|
DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
|
|
conn->server_info->unix_name,
|
|
fsp->fsp_name,
|
|
BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
|
|
conn->num_files_open));
|
|
|
|
errno = 0;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Return True if the filename is one of the special executable types.
|
|
********************************************************************/
|
|
|
|
bool is_executable(const char *fname)
|
|
{
|
|
if ((fname = strrchr_m(fname,'.'))) {
|
|
if (strequal(fname,".com") ||
|
|
strequal(fname,".dll") ||
|
|
strequal(fname,".exe") ||
|
|
strequal(fname,".sym")) {
|
|
return True;
|
|
}
|
|
}
|
|
return False;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Check if we can open a file with a share mode.
|
|
Returns True if conflict, False if not.
|
|
****************************************************************************/
|
|
|
|
static bool share_conflict(struct share_mode_entry *entry,
|
|
uint32 access_mask,
|
|
uint32 share_access)
|
|
{
|
|
DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
|
|
"entry->share_access = 0x%x, "
|
|
"entry->private_options = 0x%x\n",
|
|
(unsigned int)entry->access_mask,
|
|
(unsigned int)entry->share_access,
|
|
(unsigned int)entry->private_options));
|
|
|
|
DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
|
|
(unsigned int)access_mask, (unsigned int)share_access));
|
|
|
|
if ((entry->access_mask & (FILE_WRITE_DATA|
|
|
FILE_APPEND_DATA|
|
|
FILE_READ_DATA|
|
|
FILE_EXECUTE|
|
|
DELETE_ACCESS)) == 0) {
|
|
DEBUG(10,("share_conflict: No conflict due to "
|
|
"entry->access_mask = 0x%x\n",
|
|
(unsigned int)entry->access_mask ));
|
|
return False;
|
|
}
|
|
|
|
if ((access_mask & (FILE_WRITE_DATA|
|
|
FILE_APPEND_DATA|
|
|
FILE_READ_DATA|
|
|
FILE_EXECUTE|
|
|
DELETE_ACCESS)) == 0) {
|
|
DEBUG(10,("share_conflict: No conflict due to "
|
|
"access_mask = 0x%x\n",
|
|
(unsigned int)access_mask ));
|
|
return False;
|
|
}
|
|
|
|
#if 1 /* JRA TEST - Superdebug. */
|
|
#define CHECK_MASK(num, am, right, sa, share) \
|
|
DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
|
|
(unsigned int)(num), (unsigned int)(am), \
|
|
(unsigned int)(right), (unsigned int)(am)&(right) )); \
|
|
DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
|
|
(unsigned int)(num), (unsigned int)(sa), \
|
|
(unsigned int)(share), (unsigned int)(sa)&(share) )); \
|
|
if (((am) & (right)) && !((sa) & (share))) { \
|
|
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
|
|
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
|
|
(unsigned int)(share) )); \
|
|
return True; \
|
|
}
|
|
#else
|
|
#define CHECK_MASK(num, am, right, sa, share) \
|
|
if (((am) & (right)) && !((sa) & (share))) { \
|
|
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
|
|
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
|
|
(unsigned int)(share) )); \
|
|
return True; \
|
|
}
|
|
#endif
|
|
|
|
CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
|
|
share_access, FILE_SHARE_WRITE);
|
|
CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
|
|
entry->share_access, FILE_SHARE_WRITE);
|
|
|
|
CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
|
|
share_access, FILE_SHARE_READ);
|
|
CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
|
|
entry->share_access, FILE_SHARE_READ);
|
|
|
|
CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
|
|
share_access, FILE_SHARE_DELETE);
|
|
CHECK_MASK(6, access_mask, DELETE_ACCESS,
|
|
entry->share_access, FILE_SHARE_DELETE);
|
|
|
|
DEBUG(10,("share_conflict: No conflict.\n"));
|
|
return False;
|
|
}
|
|
|
|
#if defined(DEVELOPER)
|
|
static void validate_my_share_entries(int num,
|
|
struct share_mode_entry *share_entry)
|
|
{
|
|
files_struct *fsp;
|
|
|
|
if (!procid_is_me(&share_entry->pid)) {
|
|
return;
|
|
}
|
|
|
|
if (is_deferred_open_entry(share_entry) &&
|
|
!open_was_deferred(share_entry->op_mid)) {
|
|
char *str = talloc_asprintf(talloc_tos(),
|
|
"Got a deferred entry without a request: "
|
|
"PANIC: %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry));
|
|
smb_panic(str);
|
|
}
|
|
|
|
if (!is_valid_share_mode_entry(share_entry)) {
|
|
return;
|
|
}
|
|
|
|
fsp = file_find_dif(share_entry->id,
|
|
share_entry->share_file_id);
|
|
if (!fsp) {
|
|
DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry) ));
|
|
smb_panic("validate_my_share_entries: Cannot match a "
|
|
"share entry with an open file\n");
|
|
}
|
|
|
|
if (is_deferred_open_entry(share_entry) ||
|
|
is_unused_share_mode_entry(share_entry)) {
|
|
goto panic;
|
|
}
|
|
|
|
if ((share_entry->op_type == NO_OPLOCK) &&
|
|
(fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
|
|
/* Someone has already written to it, but I haven't yet
|
|
* noticed */
|
|
return;
|
|
}
|
|
|
|
if (((uint16)fsp->oplock_type) != share_entry->op_type) {
|
|
goto panic;
|
|
}
|
|
|
|
return;
|
|
|
|
panic:
|
|
{
|
|
char *str;
|
|
DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
|
|
share_mode_str(talloc_tos(), num, share_entry) ));
|
|
str = talloc_asprintf(talloc_tos(),
|
|
"validate_my_share_entries: "
|
|
"file %s, oplock_type = 0x%x, op_type = 0x%x\n",
|
|
fsp->fsp_name, (unsigned int)fsp->oplock_type,
|
|
(unsigned int)share_entry->op_type );
|
|
smb_panic(str);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool is_stat_open(uint32 access_mask)
|
|
{
|
|
return (access_mask &&
|
|
((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
|
|
FILE_WRITE_ATTRIBUTES))==0) &&
|
|
((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
|
|
FILE_WRITE_ATTRIBUTES)) != 0));
|
|
}
|
|
|
|
/****************************************************************************
|
|
Deal with share modes
|
|
Invarient: Share mode must be locked on entry and exit.
|
|
Returns -1 on error, or number of share modes on success (may be zero).
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_mode_check(connection_struct *conn,
|
|
const char *fname,
|
|
struct share_mode_lock *lck,
|
|
uint32 access_mask,
|
|
uint32 share_access,
|
|
uint32 create_options,
|
|
bool *file_existed)
|
|
{
|
|
int i;
|
|
|
|
if(lck->num_share_modes == 0) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
*file_existed = True;
|
|
|
|
/* A delete on close prohibits everything */
|
|
|
|
if (lck->delete_on_close) {
|
|
return NT_STATUS_DELETE_PENDING;
|
|
}
|
|
|
|
if (is_stat_open(access_mask)) {
|
|
/* Stat open that doesn't trigger oplock breaks or share mode
|
|
* checks... ! JRA. */
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* Check if the share modes will give us access.
|
|
*/
|
|
|
|
#if defined(DEVELOPER)
|
|
for(i = 0; i < lck->num_share_modes; i++) {
|
|
validate_my_share_entries(i, &lck->share_modes[i]);
|
|
}
|
|
#endif
|
|
|
|
if (!lp_share_modes(SNUM(conn))) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Now we check the share modes, after any oplock breaks. */
|
|
for(i = 0; i < lck->num_share_modes; i++) {
|
|
|
|
if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
|
|
continue;
|
|
}
|
|
|
|
/* someone else has a share lock on it, check to see if we can
|
|
* too */
|
|
if (share_conflict(&lck->share_modes[i],
|
|
access_mask, share_access)) {
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static bool is_delete_request(files_struct *fsp) {
|
|
return ((fsp->access_mask == DELETE_ACCESS) &&
|
|
(fsp->oplock_type == NO_OPLOCK));
|
|
}
|
|
|
|
/*
|
|
* Send a break message to the oplock holder and delay the open for
|
|
* our client.
|
|
*/
|
|
|
|
static NTSTATUS send_break_message(files_struct *fsp,
|
|
struct share_mode_entry *exclusive,
|
|
uint16 mid,
|
|
int oplock_request)
|
|
{
|
|
NTSTATUS status;
|
|
char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
|
|
|
|
DEBUG(10, ("Sending break request to PID %s\n",
|
|
procid_str_static(&exclusive->pid)));
|
|
exclusive->op_mid = mid;
|
|
|
|
/* Create the message. */
|
|
share_mode_entry_to_message(msg, exclusive);
|
|
|
|
/* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
|
|
don't want this set in the share mode struct pointed to by lck. */
|
|
|
|
if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
|
|
SSVAL(msg,6,exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
|
|
}
|
|
|
|
status = messaging_send_buf(smbd_messaging_context(), exclusive->pid,
|
|
MSG_SMB_BREAK_REQUEST,
|
|
(uint8 *)msg,
|
|
MSG_SMB_SHARE_MODE_ENTRY_SIZE);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(3, ("Could not send oplock break message: %s\n",
|
|
nt_errstr(status)));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* 1) No files open at all or internal open: Grant whatever the client wants.
|
|
*
|
|
* 2) Exclusive (or batch) oplock around: If the requested access is a delete
|
|
* request, break if the oplock around is a batch oplock. If it's another
|
|
* requested access type, break.
|
|
*
|
|
* 3) Only level2 around: Grant level2 and do nothing else.
|
|
*/
|
|
|
|
static bool delay_for_oplocks(struct share_mode_lock *lck,
|
|
files_struct *fsp,
|
|
uint16 mid,
|
|
int pass_number,
|
|
int oplock_request)
|
|
{
|
|
int i;
|
|
struct share_mode_entry *exclusive = NULL;
|
|
bool valid_entry = false;
|
|
bool have_level2 = false;
|
|
bool have_a_none_oplock = false;
|
|
bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
|
|
lp_level2_oplocks(SNUM(fsp->conn));
|
|
|
|
if (oplock_request & INTERNAL_OPEN_ONLY) {
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
}
|
|
|
|
if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
|
|
return false;
|
|
}
|
|
|
|
for (i=0; i<lck->num_share_modes; i++) {
|
|
|
|
if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
|
|
continue;
|
|
}
|
|
|
|
/* At least one entry is not an invalid or deferred entry. */
|
|
valid_entry = true;
|
|
|
|
if (pass_number == 1) {
|
|
if (BATCH_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
|
|
SMB_ASSERT(exclusive == NULL);
|
|
exclusive = &lck->share_modes[i];
|
|
}
|
|
} else {
|
|
if (EXCLUSIVE_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
|
|
SMB_ASSERT(exclusive == NULL);
|
|
exclusive = &lck->share_modes[i];
|
|
}
|
|
}
|
|
|
|
if (LEVEL_II_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
|
|
SMB_ASSERT(exclusive == NULL);
|
|
have_level2 = true;
|
|
}
|
|
|
|
if (lck->share_modes[i].op_type == NO_OPLOCK) {
|
|
have_a_none_oplock = true;
|
|
}
|
|
}
|
|
|
|
if (exclusive != NULL) { /* Found an exclusive oplock */
|
|
bool delay_it = is_delete_request(fsp) ?
|
|
BATCH_OPLOCK_TYPE(exclusive->op_type) : true;
|
|
SMB_ASSERT(!have_level2);
|
|
if (delay_it) {
|
|
send_break_message(fsp, exclusive, mid, oplock_request);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Match what was requested (fsp->oplock_type) with
|
|
* what was found in the existing share modes.
|
|
*/
|
|
|
|
if (!valid_entry) {
|
|
/* All entries are placeholders or deferred.
|
|
* Directly grant whatever the client wants. */
|
|
if (fsp->oplock_type == NO_OPLOCK) {
|
|
/* Store a level2 oplock, but don't tell the client */
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
}
|
|
} else if (have_a_none_oplock) {
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
} else if (have_level2) {
|
|
if (fsp->oplock_type == NO_OPLOCK ||
|
|
fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
|
|
/* Store a level2 oplock, but don't tell the client */
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
} else {
|
|
fsp->oplock_type = LEVEL_II_OPLOCK;
|
|
}
|
|
} else {
|
|
/* This case can never happen. */
|
|
SMB_ASSERT(1);
|
|
}
|
|
|
|
/*
|
|
* Don't grant level2 to clients that don't want them
|
|
* or if we've turned them off.
|
|
*/
|
|
if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
|
|
fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
|
|
}
|
|
|
|
DEBUG(10,("delay_for_oplocks: oplock type 0x%x on file %s\n",
|
|
fsp->oplock_type, fsp->fsp_name));
|
|
|
|
/* No delay. */
|
|
return false;
|
|
}
|
|
|
|
bool request_timed_out(struct timeval request_time,
|
|
struct timeval timeout)
|
|
{
|
|
struct timeval now, end_time;
|
|
GetTimeOfDay(&now);
|
|
end_time = timeval_sum(&request_time, &timeout);
|
|
return (timeval_compare(&end_time, &now) < 0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Handle the 1 second delay in returning a SHARING_VIOLATION error.
|
|
****************************************************************************/
|
|
|
|
static void defer_open(struct share_mode_lock *lck,
|
|
struct timeval request_time,
|
|
struct timeval timeout,
|
|
struct smb_request *req,
|
|
struct deferred_open_record *state)
|
|
{
|
|
int i;
|
|
|
|
/* Paranoia check */
|
|
|
|
for (i=0; i<lck->num_share_modes; i++) {
|
|
struct share_mode_entry *e = &lck->share_modes[i];
|
|
|
|
if (!is_deferred_open_entry(e)) {
|
|
continue;
|
|
}
|
|
|
|
if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
|
|
DEBUG(0, ("Trying to defer an already deferred "
|
|
"request: mid=%d, exiting\n", req->mid));
|
|
exit_server("attempt to defer a deferred request");
|
|
}
|
|
}
|
|
|
|
/* End paranoia check */
|
|
|
|
DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
|
|
"open entry for mid %u\n",
|
|
(unsigned int)request_time.tv_sec,
|
|
(unsigned int)request_time.tv_usec,
|
|
(unsigned int)req->mid));
|
|
|
|
if (!push_deferred_smb_message(req, request_time, timeout,
|
|
(char *)state, sizeof(*state))) {
|
|
exit_server("push_deferred_smb_message failed");
|
|
}
|
|
add_deferred_open(lck, req->mid, request_time, state->id);
|
|
|
|
/*
|
|
* Push the MID of this packet on the signing queue.
|
|
* We only do this once, the first time we push the packet
|
|
* onto the deferred open queue, as this has a side effect
|
|
* of incrementing the response sequence number.
|
|
*/
|
|
|
|
srv_defer_sign_response(req->mid);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
On overwrite open ensure that the attributes match.
|
|
****************************************************************************/
|
|
|
|
bool open_match_attributes(connection_struct *conn,
|
|
const char *path,
|
|
uint32 old_dos_attr,
|
|
uint32 new_dos_attr,
|
|
mode_t existing_unx_mode,
|
|
mode_t new_unx_mode,
|
|
mode_t *returned_unx_mode)
|
|
{
|
|
uint32 noarch_old_dos_attr, noarch_new_dos_attr;
|
|
|
|
noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
|
|
noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
|
|
|
|
if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
|
|
(noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
|
|
*returned_unx_mode = new_unx_mode;
|
|
} else {
|
|
*returned_unx_mode = (mode_t)0;
|
|
}
|
|
|
|
DEBUG(10,("open_match_attributes: file %s old_dos_attr = 0x%x, "
|
|
"existing_unx_mode = 0%o, new_dos_attr = 0x%x "
|
|
"returned_unx_mode = 0%o\n",
|
|
path,
|
|
(unsigned int)old_dos_attr,
|
|
(unsigned int)existing_unx_mode,
|
|
(unsigned int)new_dos_attr,
|
|
(unsigned int)*returned_unx_mode ));
|
|
|
|
/* If we're mapping SYSTEM and HIDDEN ensure they match. */
|
|
if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
|
|
if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
|
|
!(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
|
|
return False;
|
|
}
|
|
}
|
|
if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
|
|
if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
|
|
!(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
|
|
return False;
|
|
}
|
|
}
|
|
return True;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Special FCB or DOS processing in the case of a sharing violation.
|
|
Try and find a duplicated file handle.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS fcb_or_dos_open(struct smb_request *req,
|
|
connection_struct *conn,
|
|
files_struct *fsp_to_dup_into,
|
|
const char *fname,
|
|
struct file_id id,
|
|
uint16 file_pid,
|
|
uint16 vuid,
|
|
uint32 access_mask,
|
|
uint32 share_access,
|
|
uint32 create_options)
|
|
{
|
|
files_struct *fsp;
|
|
|
|
DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
|
|
"file %s.\n", fname ));
|
|
|
|
for(fsp = file_find_di_first(id); fsp;
|
|
fsp = file_find_di_next(fsp)) {
|
|
|
|
DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
|
|
"vuid = %u, file_pid = %u, private_options = 0x%x "
|
|
"access_mask = 0x%x\n", fsp->fsp_name,
|
|
fsp->fh->fd, (unsigned int)fsp->vuid,
|
|
(unsigned int)fsp->file_pid,
|
|
(unsigned int)fsp->fh->private_options,
|
|
(unsigned int)fsp->access_mask ));
|
|
|
|
if (fsp->fh->fd != -1 &&
|
|
fsp->vuid == vuid &&
|
|
fsp->file_pid == file_pid &&
|
|
(fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
|
|
NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
|
|
(fsp->access_mask & FILE_WRITE_DATA) &&
|
|
strequal(fsp->fsp_name, fname)) {
|
|
DEBUG(10,("fcb_or_dos_open: file match\n"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!fsp) {
|
|
return NT_STATUS_NOT_FOUND;
|
|
}
|
|
|
|
/* quite an insane set of semantics ... */
|
|
if (is_executable(fname) &&
|
|
(fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
|
|
DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* We need to duplicate this fsp. */
|
|
dup_file_fsp(req, fsp, access_mask, share_access,
|
|
create_options, fsp_to_dup_into);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a file with a share mode - old openX method - map into NTCreate.
|
|
****************************************************************************/
|
|
|
|
bool map_open_params_to_ntcreate(const char *fname, int deny_mode, int open_func,
|
|
uint32 *paccess_mask,
|
|
uint32 *pshare_mode,
|
|
uint32 *pcreate_disposition,
|
|
uint32 *pcreate_options)
|
|
{
|
|
uint32 access_mask;
|
|
uint32 share_mode;
|
|
uint32 create_disposition;
|
|
uint32 create_options = FILE_NON_DIRECTORY_FILE;
|
|
|
|
DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
|
|
"open_func = 0x%x\n",
|
|
fname, (unsigned int)deny_mode, (unsigned int)open_func ));
|
|
|
|
/* Create the NT compatible access_mask. */
|
|
switch (GET_OPENX_MODE(deny_mode)) {
|
|
case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
|
|
case DOS_OPEN_RDONLY:
|
|
access_mask = FILE_GENERIC_READ;
|
|
break;
|
|
case DOS_OPEN_WRONLY:
|
|
access_mask = FILE_GENERIC_WRITE;
|
|
break;
|
|
case DOS_OPEN_RDWR:
|
|
case DOS_OPEN_FCB:
|
|
access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
|
|
break;
|
|
default:
|
|
DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
|
|
(unsigned int)GET_OPENX_MODE(deny_mode)));
|
|
return False;
|
|
}
|
|
|
|
/* Create the NT compatible create_disposition. */
|
|
switch (open_func) {
|
|
case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
|
|
create_disposition = FILE_CREATE;
|
|
break;
|
|
|
|
case OPENX_FILE_EXISTS_OPEN:
|
|
create_disposition = FILE_OPEN;
|
|
break;
|
|
|
|
case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
|
|
create_disposition = FILE_OPEN_IF;
|
|
break;
|
|
|
|
case OPENX_FILE_EXISTS_TRUNCATE:
|
|
create_disposition = FILE_OVERWRITE;
|
|
break;
|
|
|
|
case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
|
|
create_disposition = FILE_OVERWRITE_IF;
|
|
break;
|
|
|
|
default:
|
|
/* From samba4 - to be confirmed. */
|
|
if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
|
|
create_disposition = FILE_CREATE;
|
|
break;
|
|
}
|
|
DEBUG(10,("map_open_params_to_ntcreate: bad "
|
|
"open_func 0x%x\n", (unsigned int)open_func));
|
|
return False;
|
|
}
|
|
|
|
/* Create the NT compatible share modes. */
|
|
switch (GET_DENY_MODE(deny_mode)) {
|
|
case DENY_ALL:
|
|
share_mode = FILE_SHARE_NONE;
|
|
break;
|
|
|
|
case DENY_WRITE:
|
|
share_mode = FILE_SHARE_READ;
|
|
break;
|
|
|
|
case DENY_READ:
|
|
share_mode = FILE_SHARE_WRITE;
|
|
break;
|
|
|
|
case DENY_NONE:
|
|
share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
|
|
break;
|
|
|
|
case DENY_DOS:
|
|
create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS;
|
|
if (is_executable(fname)) {
|
|
share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
|
|
} else {
|
|
if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
|
|
share_mode = FILE_SHARE_READ;
|
|
} else {
|
|
share_mode = FILE_SHARE_NONE;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DENY_FCB:
|
|
create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB;
|
|
share_mode = FILE_SHARE_NONE;
|
|
break;
|
|
|
|
default:
|
|
DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
|
|
(unsigned int)GET_DENY_MODE(deny_mode) ));
|
|
return False;
|
|
}
|
|
|
|
DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
|
|
"share_mode = 0x%x, create_disposition = 0x%x, "
|
|
"create_options = 0x%x\n",
|
|
fname,
|
|
(unsigned int)access_mask,
|
|
(unsigned int)share_mode,
|
|
(unsigned int)create_disposition,
|
|
(unsigned int)create_options ));
|
|
|
|
if (paccess_mask) {
|
|
*paccess_mask = access_mask;
|
|
}
|
|
if (pshare_mode) {
|
|
*pshare_mode = share_mode;
|
|
}
|
|
if (pcreate_disposition) {
|
|
*pcreate_disposition = create_disposition;
|
|
}
|
|
if (pcreate_options) {
|
|
*pcreate_options = create_options;
|
|
}
|
|
|
|
return True;
|
|
|
|
}
|
|
|
|
static void schedule_defer_open(struct share_mode_lock *lck,
|
|
struct timeval request_time,
|
|
struct smb_request *req)
|
|
{
|
|
struct deferred_open_record state;
|
|
|
|
/* This is a relative time, added to the absolute
|
|
request_time value to get the absolute timeout time.
|
|
Note that if this is the second or greater time we enter
|
|
this codepath for this particular request mid then
|
|
request_time is left as the absolute time of the *first*
|
|
time this request mid was processed. This is what allows
|
|
the request to eventually time out. */
|
|
|
|
struct timeval timeout;
|
|
|
|
/* Normally the smbd we asked should respond within
|
|
* OPLOCK_BREAK_TIMEOUT seconds regardless of whether
|
|
* the client did, give twice the timeout as a safety
|
|
* measure here in case the other smbd is stuck
|
|
* somewhere else. */
|
|
|
|
timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
|
|
|
|
/* Nothing actually uses state.delayed_for_oplocks
|
|
but it's handy to differentiate in debug messages
|
|
between a 30 second delay due to oplock break, and
|
|
a 1 second delay for share mode conflicts. */
|
|
|
|
state.delayed_for_oplocks = True;
|
|
state.id = lck->id;
|
|
|
|
if (!request_timed_out(request_time, timeout)) {
|
|
defer_open(lck, request_time, timeout, req, &state);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
Work out what access_mask to use from what the client sent us.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS calculate_access_mask(connection_struct *conn,
|
|
const char *fname,
|
|
bool file_existed,
|
|
uint32_t access_mask,
|
|
uint32_t *access_mask_out)
|
|
{
|
|
NTSTATUS status;
|
|
|
|
/*
|
|
* Convert GENERIC bits to specific bits.
|
|
*/
|
|
|
|
se_map_generic(&access_mask, &file_generic_mapping);
|
|
|
|
/* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
|
|
if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
|
|
if (file_existed) {
|
|
|
|
struct security_descriptor *sd;
|
|
uint32_t access_granted = 0;
|
|
|
|
status = SMB_VFS_GET_NT_ACL(conn, fname,
|
|
(OWNER_SECURITY_INFORMATION |
|
|
GROUP_SECURITY_INFORMATION |
|
|
DACL_SECURITY_INFORMATION),&sd);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("calculate_access_mask: Could not get acl "
|
|
"on file %s: %s\n",
|
|
fname,
|
|
nt_errstr(status)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
status = smb1_file_se_access_check(sd,
|
|
conn->server_info->ptok,
|
|
access_mask,
|
|
&access_granted);
|
|
|
|
TALLOC_FREE(sd);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("calculate_access_mask: Access denied on "
|
|
"file %s: when calculating maximum access\n",
|
|
fname));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
access_mask = access_granted;
|
|
} else {
|
|
access_mask = FILE_GENERIC_ALL;
|
|
}
|
|
}
|
|
|
|
*access_mask_out = access_mask;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a file with a share mode. Passed in an already created files_struct *.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_file_ntcreate(connection_struct *conn,
|
|
struct smb_request *req,
|
|
const char *fname,
|
|
SMB_STRUCT_STAT *psbuf,
|
|
uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
|
|
uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
|
|
uint32 create_disposition, /* FILE_OPEN_IF etc. */
|
|
uint32 create_options, /* options such as delete on close. */
|
|
uint32 new_dos_attributes, /* attributes used for new file. */
|
|
int oplock_request, /* internal Samba oplock codes. */
|
|
/* Information (FILE_EXISTS etc.) */
|
|
int *pinfo,
|
|
files_struct *fsp)
|
|
{
|
|
int flags=0;
|
|
int flags2=0;
|
|
bool file_existed = VALID_STAT(*psbuf);
|
|
bool def_acl = False;
|
|
bool posix_open = False;
|
|
bool new_file_created = False;
|
|
bool clear_ads = false;
|
|
struct file_id id;
|
|
NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
|
|
mode_t new_unx_mode = (mode_t)0;
|
|
mode_t unx_mode = (mode_t)0;
|
|
int info;
|
|
uint32 existing_dos_attributes = 0;
|
|
struct pending_message_list *pml = NULL;
|
|
struct timeval request_time = timeval_zero();
|
|
struct share_mode_lock *lck = NULL;
|
|
uint32 open_access_mask = access_mask;
|
|
NTSTATUS status;
|
|
int ret_flock;
|
|
char *parent_dir;
|
|
const char *newname;
|
|
|
|
ZERO_STRUCT(id);
|
|
|
|
if (conn->printer) {
|
|
/*
|
|
* Printers are handled completely differently.
|
|
* Most of the passed parameters are ignored.
|
|
*/
|
|
|
|
if (pinfo) {
|
|
*pinfo = FILE_WAS_CREATED;
|
|
}
|
|
|
|
DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n", fname));
|
|
|
|
return print_fsp_open(req, conn, fname, req->vuid, fsp, psbuf);
|
|
}
|
|
|
|
if (!parent_dirname(talloc_tos(), fname, &parent_dir, &newname)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
|
|
posix_open = True;
|
|
unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
|
|
new_dos_attributes = 0;
|
|
} else {
|
|
/* We add aARCH to this as this mode is only used if the file is
|
|
* created new. */
|
|
unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
|
|
parent_dir);
|
|
}
|
|
|
|
DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
|
|
"access_mask=0x%x share_access=0x%x "
|
|
"create_disposition = 0x%x create_options=0x%x "
|
|
"unix mode=0%o oplock_request=%d\n",
|
|
fname, new_dos_attributes, access_mask, share_access,
|
|
create_disposition, create_options, unx_mode,
|
|
oplock_request));
|
|
|
|
if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
|
|
DEBUG(0, ("No smb request but not an internal only open!\n"));
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Only non-internal opens can be deferred at all
|
|
*/
|
|
|
|
if ((req != NULL)
|
|
&& ((pml = get_open_deferred_message(req->mid)) != NULL)) {
|
|
struct deferred_open_record *state =
|
|
(struct deferred_open_record *)pml->private_data.data;
|
|
|
|
/* Remember the absolute time of the original
|
|
request with this mid. We'll use it later to
|
|
see if this has timed out. */
|
|
|
|
request_time = pml->request_time;
|
|
|
|
/* Remove the deferred open entry under lock. */
|
|
lck = get_share_mode_lock(talloc_tos(), state->id, NULL, NULL,
|
|
NULL);
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("could not get share mode lock\n"));
|
|
} else {
|
|
del_deferred_open_entry(lck, req->mid);
|
|
TALLOC_FREE(lck);
|
|
}
|
|
|
|
/* Ensure we don't reprocess this message. */
|
|
remove_deferred_open_smb_message(req->mid);
|
|
}
|
|
|
|
status = check_name(conn, fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
if (!posix_open) {
|
|
new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
|
|
if (file_existed) {
|
|
existing_dos_attributes = dos_mode(conn, fname, psbuf);
|
|
}
|
|
}
|
|
|
|
/* ignore any oplock requests if oplocks are disabled */
|
|
if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break ||
|
|
IS_VETO_OPLOCK_PATH(conn, fname)) {
|
|
/* Mask off everything except the private Samba bits. */
|
|
oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
|
|
}
|
|
|
|
/* this is for OS/2 long file names - say we don't support them */
|
|
if (!lp_posix_pathnames() && strstr(fname,".+,;=[].")) {
|
|
/* OS/2 Workplace shell fix may be main code stream in a later
|
|
* release. */
|
|
DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
|
|
"supported.\n"));
|
|
if (use_nt_status()) {
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
|
|
}
|
|
|
|
switch( create_disposition ) {
|
|
/*
|
|
* Currently we're using FILE_SUPERSEDE as the same as
|
|
* FILE_OVERWRITE_IF but they really are
|
|
* different. FILE_SUPERSEDE deletes an existing file
|
|
* (requiring delete access) then recreates it.
|
|
*/
|
|
case FILE_SUPERSEDE:
|
|
/* If file exists replace/overwrite. If file doesn't
|
|
* exist create. */
|
|
flags2 |= (O_CREAT | O_TRUNC);
|
|
clear_ads = true;
|
|
break;
|
|
|
|
case FILE_OVERWRITE_IF:
|
|
/* If file exists replace/overwrite. If file doesn't
|
|
* exist create. */
|
|
flags2 |= (O_CREAT | O_TRUNC);
|
|
clear_ads = true;
|
|
break;
|
|
|
|
case FILE_OPEN:
|
|
/* If file exists open. If file doesn't exist error. */
|
|
if (!file_existed) {
|
|
DEBUG(5,("open_file_ntcreate: FILE_OPEN "
|
|
"requested for file %s and file "
|
|
"doesn't exist.\n", fname ));
|
|
errno = ENOENT;
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
break;
|
|
|
|
case FILE_OVERWRITE:
|
|
/* If file exists overwrite. If file doesn't exist
|
|
* error. */
|
|
if (!file_existed) {
|
|
DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
|
|
"requested for file %s and file "
|
|
"doesn't exist.\n", fname ));
|
|
errno = ENOENT;
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
flags2 |= O_TRUNC;
|
|
clear_ads = true;
|
|
break;
|
|
|
|
case FILE_CREATE:
|
|
/* If file exists error. If file doesn't exist
|
|
* create. */
|
|
if (file_existed) {
|
|
DEBUG(5,("open_file_ntcreate: FILE_CREATE "
|
|
"requested for file %s and file "
|
|
"already exists.\n", fname ));
|
|
if (S_ISDIR(psbuf->st_mode)) {
|
|
errno = EISDIR;
|
|
} else {
|
|
errno = EEXIST;
|
|
}
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
flags2 |= (O_CREAT|O_EXCL);
|
|
break;
|
|
|
|
case FILE_OPEN_IF:
|
|
/* If file exists open. If file doesn't exist
|
|
* create. */
|
|
flags2 |= O_CREAT;
|
|
break;
|
|
|
|
default:
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* We only care about matching attributes on file exists and
|
|
* overwrite. */
|
|
|
|
if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
|
|
(create_disposition == FILE_OVERWRITE_IF))) {
|
|
if (!open_match_attributes(conn, fname,
|
|
existing_dos_attributes,
|
|
new_dos_attributes, psbuf->st_mode,
|
|
unx_mode, &new_unx_mode)) {
|
|
DEBUG(5,("open_file_ntcreate: attributes missmatch "
|
|
"for file %s (%x %x) (0%o, 0%o)\n",
|
|
fname, existing_dos_attributes,
|
|
new_dos_attributes,
|
|
(unsigned int)psbuf->st_mode,
|
|
(unsigned int)unx_mode ));
|
|
errno = EACCES;
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
}
|
|
|
|
status = calculate_access_mask(conn, fname, file_existed,
|
|
access_mask,
|
|
&access_mask);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_file_ntcreate: calculate_access_mask "
|
|
"on file %s returned %s\n",
|
|
fname,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
open_access_mask = access_mask;
|
|
|
|
if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
|
|
open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
|
|
}
|
|
|
|
DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
|
|
"access_mask=0x%x\n", fname, access_mask ));
|
|
|
|
/*
|
|
* Note that we ignore the append flag as append does not
|
|
* mean the same thing under DOS and Unix.
|
|
*/
|
|
|
|
if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
|
|
(oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
|
|
/* DENY_DOS opens are always underlying read-write on the
|
|
file handle, no matter what the requested access mask
|
|
says. */
|
|
if ((create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
|
|
access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
|
|
flags = O_RDWR;
|
|
} else {
|
|
flags = O_WRONLY;
|
|
}
|
|
} else {
|
|
flags = O_RDONLY;
|
|
}
|
|
|
|
/*
|
|
* Currently we only look at FILE_WRITE_THROUGH for create options.
|
|
*/
|
|
|
|
#if defined(O_SYNC)
|
|
if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
|
|
flags2 |= O_SYNC;
|
|
}
|
|
#endif /* O_SYNC */
|
|
|
|
if (posix_open && (access_mask & FILE_APPEND_DATA)) {
|
|
flags2 |= O_APPEND;
|
|
}
|
|
|
|
if (!posix_open && !CAN_WRITE(conn)) {
|
|
/*
|
|
* We should really return a permission denied error if either
|
|
* O_CREAT or O_TRUNC are set, but for compatibility with
|
|
* older versions of Samba we just AND them out.
|
|
*/
|
|
flags2 &= ~(O_CREAT|O_TRUNC);
|
|
}
|
|
|
|
/*
|
|
* Ensure we can't write on a read-only share or file.
|
|
*/
|
|
|
|
if (flags != O_RDONLY && file_existed &&
|
|
(!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
|
|
DEBUG(5,("open_file_ntcreate: write access requested for "
|
|
"file %s on read only %s\n",
|
|
fname, !CAN_WRITE(conn) ? "share" : "file" ));
|
|
errno = EACCES;
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
|
|
fsp->share_access = share_access;
|
|
fsp->fh->private_options = create_options;
|
|
fsp->access_mask = open_access_mask; /* We change this to the
|
|
* requested access_mask after
|
|
* the open is done. */
|
|
fsp->posix_open = posix_open;
|
|
|
|
/* Ensure no SAMBA_PRIVATE bits can be set. */
|
|
fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
|
|
|
|
if (timeval_is_zero(&request_time)) {
|
|
request_time = fsp->open_time;
|
|
}
|
|
|
|
if (file_existed) {
|
|
struct timespec old_write_time = get_mtimespec(psbuf);
|
|
id = vfs_file_id_from_sbuf(conn, psbuf);
|
|
|
|
lck = get_share_mode_lock(talloc_tos(), id,
|
|
conn->connectpath,
|
|
fname, &old_write_time);
|
|
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("Could not get share mode lock\n"));
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
/* First pass - send break only on batch oplocks. */
|
|
if ((req != NULL)
|
|
&& delay_for_oplocks(lck, fsp, req->mid, 1,
|
|
oplock_request)) {
|
|
schedule_defer_open(lck, request_time, req);
|
|
TALLOC_FREE(lck);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
/* Use the client requested access mask here, not the one we
|
|
* open with. */
|
|
status = open_mode_check(conn, fname, lck,
|
|
access_mask, share_access,
|
|
create_options, &file_existed);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
/* We might be going to allow this open. Check oplock
|
|
* status again. */
|
|
/* Second pass - send break for both batch or
|
|
* exclusive oplocks. */
|
|
if ((req != NULL)
|
|
&& delay_for_oplocks(lck, fsp, req->mid, 2,
|
|
oplock_request)) {
|
|
schedule_defer_open(lck, request_time, req);
|
|
TALLOC_FREE(lck);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
}
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
|
|
/* DELETE_PENDING is not deferred for a second */
|
|
TALLOC_FREE(lck);
|
|
return status;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
uint32 can_access_mask;
|
|
bool can_access = True;
|
|
|
|
SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
|
|
|
|
/* Check if this can be done with the deny_dos and fcb
|
|
* calls. */
|
|
if (create_options &
|
|
(NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
|
|
NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
|
|
if (req == NULL) {
|
|
DEBUG(0, ("DOS open without an SMB "
|
|
"request!\n"));
|
|
TALLOC_FREE(lck);
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
/* Use the client requested access mask here,
|
|
* not the one we open with. */
|
|
status = fcb_or_dos_open(req,
|
|
conn,
|
|
fsp,
|
|
fname,
|
|
id,
|
|
req->smbpid,
|
|
req->vuid,
|
|
access_mask,
|
|
share_access,
|
|
create_options);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(lck);
|
|
if (pinfo) {
|
|
*pinfo = FILE_WAS_OPENED;
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This next line is a subtlety we need for
|
|
* MS-Access. If a file open will fail due to share
|
|
* permissions and also for security (access) reasons,
|
|
* we need to return the access failed error, not the
|
|
* share error. We can't open the file due to kernel
|
|
* oplock deadlock (it's possible we failed above on
|
|
* the open_mode_check()) so use a userspace check.
|
|
*/
|
|
|
|
if (flags & O_RDWR) {
|
|
can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
|
|
} else if (flags & O_WRONLY) {
|
|
can_access_mask = FILE_WRITE_DATA;
|
|
} else {
|
|
can_access_mask = FILE_READ_DATA;
|
|
}
|
|
|
|
if (((can_access_mask & FILE_WRITE_DATA) && !CAN_WRITE(conn)) ||
|
|
!can_access_file_data(conn,fname,psbuf,can_access_mask)) {
|
|
can_access = False;
|
|
}
|
|
|
|
/*
|
|
* If we're returning a share violation, ensure we
|
|
* cope with the braindead 1 second delay.
|
|
*/
|
|
|
|
if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
|
|
lp_defer_sharing_violations()) {
|
|
struct timeval timeout;
|
|
struct deferred_open_record state;
|
|
int timeout_usecs;
|
|
|
|
/* this is a hack to speed up torture tests
|
|
in 'make test' */
|
|
timeout_usecs = lp_parm_int(SNUM(conn),
|
|
"smbd","sharedelay",
|
|
SHARING_VIOLATION_USEC_WAIT);
|
|
|
|
/* This is a relative time, added to the absolute
|
|
request_time value to get the absolute timeout time.
|
|
Note that if this is the second or greater time we enter
|
|
this codepath for this particular request mid then
|
|
request_time is left as the absolute time of the *first*
|
|
time this request mid was processed. This is what allows
|
|
the request to eventually time out. */
|
|
|
|
timeout = timeval_set(0, timeout_usecs);
|
|
|
|
/* Nothing actually uses state.delayed_for_oplocks
|
|
but it's handy to differentiate in debug messages
|
|
between a 30 second delay due to oplock break, and
|
|
a 1 second delay for share mode conflicts. */
|
|
|
|
state.delayed_for_oplocks = False;
|
|
state.id = id;
|
|
|
|
if ((req != NULL)
|
|
&& !request_timed_out(request_time,
|
|
timeout)) {
|
|
defer_open(lck, request_time, timeout,
|
|
req, &state);
|
|
}
|
|
}
|
|
|
|
TALLOC_FREE(lck);
|
|
if (can_access) {
|
|
/*
|
|
* We have detected a sharing violation here
|
|
* so return the correct error code
|
|
*/
|
|
status = NT_STATUS_SHARING_VIOLATION;
|
|
} else {
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* We exit this block with the share entry *locked*.....
|
|
*/
|
|
}
|
|
|
|
SMB_ASSERT(!file_existed || (lck != NULL));
|
|
|
|
/*
|
|
* Ensure we pay attention to default ACLs on directories if required.
|
|
*/
|
|
|
|
if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
|
|
(def_acl = directory_has_default_acl(conn, parent_dir))) {
|
|
unx_mode = 0777;
|
|
}
|
|
|
|
DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
|
|
"access_mask = 0x%x, open_access_mask = 0x%x\n",
|
|
(unsigned int)flags, (unsigned int)flags2,
|
|
(unsigned int)unx_mode, (unsigned int)access_mask,
|
|
(unsigned int)open_access_mask));
|
|
|
|
/*
|
|
* open_file strips any O_TRUNC flags itself.
|
|
*/
|
|
|
|
fsp_open = open_file(fsp, conn, req, parent_dir, newname, fname, psbuf,
|
|
flags|flags2, unx_mode, access_mask,
|
|
open_access_mask);
|
|
|
|
if (!NT_STATUS_IS_OK(fsp_open)) {
|
|
if (lck != NULL) {
|
|
TALLOC_FREE(lck);
|
|
}
|
|
return fsp_open;
|
|
}
|
|
|
|
if (!file_existed) {
|
|
struct timespec old_write_time = get_mtimespec(psbuf);
|
|
/*
|
|
* Deal with the race condition where two smbd's detect the
|
|
* file doesn't exist and do the create at the same time. One
|
|
* of them will win and set a share mode, the other (ie. this
|
|
* one) should check if the requested share mode for this
|
|
* create is allowed.
|
|
*/
|
|
|
|
/*
|
|
* Now the file exists and fsp is successfully opened,
|
|
* fsp->dev and fsp->inode are valid and should replace the
|
|
* dev=0,inode=0 from a non existent file. Spotted by
|
|
* Nadav Danieli <nadavd@exanet.com>. JRA.
|
|
*/
|
|
|
|
id = fsp->file_id;
|
|
|
|
lck = get_share_mode_lock(talloc_tos(), id,
|
|
conn->connectpath,
|
|
fname, &old_write_time);
|
|
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("open_file_ntcreate: Could not get share "
|
|
"mode lock for %s\n", fname));
|
|
fd_close(fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
/* First pass - send break only on batch oplocks. */
|
|
if ((req != NULL)
|
|
&& delay_for_oplocks(lck, fsp, req->mid, 1,
|
|
oplock_request)) {
|
|
schedule_defer_open(lck, request_time, req);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
status = open_mode_check(conn, fname, lck,
|
|
access_mask, share_access,
|
|
create_options, &file_existed);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
/* We might be going to allow this open. Check oplock
|
|
* status again. */
|
|
/* Second pass - send break for both batch or
|
|
* exclusive oplocks. */
|
|
if ((req != NULL)
|
|
&& delay_for_oplocks(lck, fsp, req->mid, 2,
|
|
oplock_request)) {
|
|
schedule_defer_open(lck, request_time, req);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
struct deferred_open_record state;
|
|
|
|
fd_close(fsp);
|
|
|
|
state.delayed_for_oplocks = False;
|
|
state.id = id;
|
|
|
|
/* Do it all over again immediately. In the second
|
|
* round we will find that the file existed and handle
|
|
* the DELETE_PENDING and FCB cases correctly. No need
|
|
* to duplicate the code here. Essentially this is a
|
|
* "goto top of this function", but don't tell
|
|
* anybody... */
|
|
|
|
if (req != NULL) {
|
|
defer_open(lck, request_time, timeval_zero(),
|
|
req, &state);
|
|
}
|
|
TALLOC_FREE(lck);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* We exit this block with the share entry *locked*.....
|
|
*/
|
|
|
|
}
|
|
|
|
SMB_ASSERT(lck != NULL);
|
|
|
|
/* Delete streams if create_disposition requires it */
|
|
if (file_existed && clear_ads && !is_ntfs_stream_name(fname)) {
|
|
status = delete_all_streams(conn, fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/* note that we ignore failure for the following. It is
|
|
basically a hack for NFS, and NFS will never set one of
|
|
these only read them. Nobody but Samba can ever set a deny
|
|
mode and we have already checked our more authoritative
|
|
locking database for permission to set this deny mode. If
|
|
the kernel refuses the operations then the kernel is wrong.
|
|
note that GPFS supports it as well - jmcd */
|
|
|
|
if (fsp->fh->fd != -1) {
|
|
ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
|
|
if(ret_flock == -1 ){
|
|
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* At this point onwards, we can guarentee that the share entry
|
|
* is locked, whether we created the file or not, and that the
|
|
* deny mode is compatible with all current opens.
|
|
*/
|
|
|
|
/*
|
|
* If requested, truncate the file.
|
|
*/
|
|
|
|
if (flags2&O_TRUNC) {
|
|
/*
|
|
* We are modifing the file after open - update the stat
|
|
* struct..
|
|
*/
|
|
if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
|
|
(SMB_VFS_FSTAT(fsp, psbuf)==-1)) {
|
|
status = map_nt_error_from_unix(errno);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/* Record the options we were opened with. */
|
|
fsp->share_access = share_access;
|
|
fsp->fh->private_options = create_options;
|
|
/*
|
|
* According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
|
|
*/
|
|
fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
|
|
|
|
if (file_existed) {
|
|
/* stat opens on existing files don't get oplocks. */
|
|
if (is_stat_open(open_access_mask)) {
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
}
|
|
|
|
if (!(flags2 & O_TRUNC)) {
|
|
info = FILE_WAS_OPENED;
|
|
} else {
|
|
info = FILE_WAS_OVERWRITTEN;
|
|
}
|
|
} else {
|
|
info = FILE_WAS_CREATED;
|
|
}
|
|
|
|
if (pinfo) {
|
|
*pinfo = info;
|
|
}
|
|
|
|
/*
|
|
* Setup the oplock info in both the shared memory and
|
|
* file structs.
|
|
*/
|
|
|
|
if (!set_file_oplock(fsp, fsp->oplock_type)) {
|
|
/* Could not get the kernel oplock */
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
}
|
|
|
|
if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
|
|
new_file_created = True;
|
|
}
|
|
|
|
set_share_mode(lck, fsp, conn->server_info->utok.uid, 0,
|
|
fsp->oplock_type);
|
|
|
|
/* Handle strange delete on close create semantics. */
|
|
if (create_options & FILE_DELETE_ON_CLOSE) {
|
|
|
|
status = can_set_delete_on_close(fsp, True, new_dos_attributes);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
/* Remember to delete the mode we just added. */
|
|
del_share_mode(lck, fsp);
|
|
TALLOC_FREE(lck);
|
|
fd_close(fsp);
|
|
return status;
|
|
}
|
|
/* Note that here we set the *inital* delete on close flag,
|
|
not the regular one. The magic gets handled in close. */
|
|
fsp->initial_delete_on_close = True;
|
|
}
|
|
|
|
if (new_file_created) {
|
|
/* Files should be initially set as archive */
|
|
if (lp_map_archive(SNUM(conn)) ||
|
|
lp_store_dos_attributes(SNUM(conn))) {
|
|
if (!posix_open) {
|
|
SMB_STRUCT_STAT tmp_sbuf;
|
|
SET_STAT_INVALID(tmp_sbuf);
|
|
if (file_set_dosmode(
|
|
conn, fname,
|
|
new_dos_attributes | aARCH,
|
|
&tmp_sbuf, parent_dir,
|
|
true) == 0) {
|
|
unx_mode = tmp_sbuf.st_mode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Take care of inherited ACLs on created files - if default ACL not
|
|
* selected.
|
|
*/
|
|
|
|
if (!posix_open && !file_existed && !def_acl) {
|
|
|
|
int saved_errno = errno; /* We might get ENOSYS in the next
|
|
* call.. */
|
|
|
|
if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
|
|
errno == ENOSYS) {
|
|
errno = saved_errno; /* Ignore ENOSYS */
|
|
}
|
|
|
|
} else if (new_unx_mode) {
|
|
|
|
int ret = -1;
|
|
|
|
/* Attributes need changing. File already existed. */
|
|
|
|
{
|
|
int saved_errno = errno; /* We might get ENOSYS in the
|
|
* next call.. */
|
|
ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
|
|
|
|
if (ret == -1 && errno == ENOSYS) {
|
|
errno = saved_errno; /* Ignore ENOSYS */
|
|
} else {
|
|
DEBUG(5, ("open_file_ntcreate: reset "
|
|
"attributes of file %s to 0%o\n",
|
|
fname, (unsigned int)new_unx_mode));
|
|
ret = 0; /* Don't do the fchmod below. */
|
|
}
|
|
}
|
|
|
|
if ((ret == -1) &&
|
|
(SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
|
|
DEBUG(5, ("open_file_ntcreate: failed to reset "
|
|
"attributes of file %s to 0%o\n",
|
|
fname, (unsigned int)new_unx_mode));
|
|
}
|
|
|
|
/* If this is a successful open, we must remove any deferred open
|
|
* records. */
|
|
if (req != NULL) {
|
|
del_deferred_open_entry(lck, req->mid);
|
|
}
|
|
TALLOC_FREE(lck);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
Open a file for for write to ensure that we can fchmod it.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS open_file_fchmod(struct smb_request *req, connection_struct *conn,
|
|
const char *fname,
|
|
SMB_STRUCT_STAT *psbuf, files_struct **result)
|
|
{
|
|
files_struct *fsp = NULL;
|
|
NTSTATUS status;
|
|
|
|
if (!VALID_STAT(*psbuf)) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
status = file_new(req, conn, &fsp);
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = SMB_VFS_CREATE_FILE(
|
|
conn, /* conn */
|
|
NULL, /* req */
|
|
0, /* root_dir_fid */
|
|
fname, /* fname */
|
|
0, /* create_file_flags */
|
|
FILE_WRITE_DATA, /* access_mask */
|
|
(FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
|
|
FILE_SHARE_DELETE),
|
|
FILE_OPEN, /* create_disposition*/
|
|
0, /* create_options */
|
|
0, /* file_attributes */
|
|
0, /* oplock_request */
|
|
0, /* allocation_size */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
&fsp, /* result */
|
|
NULL, /* pinfo */
|
|
psbuf); /* psbuf */
|
|
|
|
/*
|
|
* This is not a user visible file open.
|
|
* Don't set a share mode.
|
|
*/
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
*result = fsp;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Close the fchmod file fd - ensure no locks are lost.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS close_file_fchmod(struct smb_request *req, files_struct *fsp)
|
|
{
|
|
NTSTATUS status = fd_close(fsp);
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS mkdir_internal(connection_struct *conn,
|
|
const char *name,
|
|
uint32 file_attributes,
|
|
SMB_STRUCT_STAT *psbuf)
|
|
{
|
|
mode_t mode;
|
|
char *parent_dir;
|
|
const char *dirname;
|
|
NTSTATUS status;
|
|
bool posix_open = false;
|
|
|
|
if(!CAN_WRITE(conn)) {
|
|
DEBUG(5,("mkdir_internal: failing create on read-only share "
|
|
"%s\n", lp_servicename(SNUM(conn))));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
status = check_name(conn, name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
if (!parent_dirname(talloc_tos(), name, &parent_dir, &dirname)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
|
|
posix_open = true;
|
|
mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
|
|
} else {
|
|
mode = unix_mode(conn, aDIR, name, parent_dir);
|
|
}
|
|
|
|
if (SMB_VFS_MKDIR(conn, name, mode) != 0) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
/* Ensure we're checking for a symlink here.... */
|
|
/* We don't want to get caught by a symlink racer. */
|
|
|
|
if (SMB_VFS_LSTAT(conn, name, psbuf) == -1) {
|
|
DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
|
|
name, strerror(errno)));
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
if (!S_ISDIR(psbuf->st_mode)) {
|
|
DEBUG(0, ("Directory just '%s' created is not a directory\n",
|
|
name));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (lp_store_dos_attributes(SNUM(conn))) {
|
|
if (!posix_open) {
|
|
file_set_dosmode(conn, name,
|
|
file_attributes | aDIR, NULL,
|
|
parent_dir,
|
|
true);
|
|
}
|
|
}
|
|
|
|
if (lp_inherit_perms(SNUM(conn))) {
|
|
inherit_access_posix_acl(conn, parent_dir, name, mode);
|
|
}
|
|
|
|
if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
|
|
/*
|
|
* Check if high bits should have been set,
|
|
* then (if bits are missing): add them.
|
|
* Consider bits automagically set by UNIX, i.e. SGID bit from parent
|
|
* dir.
|
|
*/
|
|
if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) && (mode & ~psbuf->st_mode)) {
|
|
SMB_VFS_CHMOD(conn, name,
|
|
psbuf->st_mode | (mode & ~psbuf->st_mode));
|
|
}
|
|
}
|
|
|
|
/* Change the owner if required. */
|
|
if (lp_inherit_owner(SNUM(conn))) {
|
|
change_dir_owner_to_parent(conn, parent_dir, name, psbuf);
|
|
}
|
|
|
|
notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
|
|
name);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a directory from an NT SMB call.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS open_directory(connection_struct *conn,
|
|
struct smb_request *req,
|
|
const char *fname,
|
|
SMB_STRUCT_STAT *psbuf,
|
|
uint32 access_mask,
|
|
uint32 share_access,
|
|
uint32 create_disposition,
|
|
uint32 create_options,
|
|
uint32 file_attributes,
|
|
int *pinfo,
|
|
files_struct **result)
|
|
{
|
|
files_struct *fsp = NULL;
|
|
bool dir_existed = VALID_STAT(*psbuf) ? True : False;
|
|
struct share_mode_lock *lck = NULL;
|
|
NTSTATUS status;
|
|
struct timespec mtimespec;
|
|
int info = 0;
|
|
|
|
DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
|
|
"share_access = 0x%x create_options = 0x%x, "
|
|
"create_disposition = 0x%x, file_attributes = 0x%x\n",
|
|
fname,
|
|
(unsigned int)access_mask,
|
|
(unsigned int)share_access,
|
|
(unsigned int)create_options,
|
|
(unsigned int)create_disposition,
|
|
(unsigned int)file_attributes));
|
|
|
|
if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
|
|
(conn->fs_capabilities & FILE_NAMED_STREAMS) &&
|
|
is_ntfs_stream_name(fname)) {
|
|
DEBUG(2, ("open_directory: %s is a stream name!\n", fname));
|
|
return NT_STATUS_NOT_A_DIRECTORY;
|
|
}
|
|
|
|
status = calculate_access_mask(conn, fname, dir_existed,
|
|
access_mask,
|
|
&access_mask);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_directory: calculate_access_mask "
|
|
"on file %s returned %s\n",
|
|
fname,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
switch( create_disposition ) {
|
|
case FILE_OPEN:
|
|
|
|
info = FILE_WAS_OPENED;
|
|
|
|
/*
|
|
* We want to follow symlinks here.
|
|
*/
|
|
|
|
if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
|
|
return map_nt_error_from_unix(errno);
|
|
}
|
|
|
|
break;
|
|
|
|
case FILE_CREATE:
|
|
|
|
/* If directory exists error. If directory doesn't
|
|
* exist create. */
|
|
|
|
status = mkdir_internal(conn,
|
|
fname,
|
|
file_attributes,
|
|
psbuf);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(2, ("open_directory: unable to create "
|
|
"%s. Error was %s\n", fname,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
info = FILE_WAS_CREATED;
|
|
break;
|
|
|
|
case FILE_OPEN_IF:
|
|
/*
|
|
* If directory exists open. If directory doesn't
|
|
* exist create.
|
|
*/
|
|
|
|
status = mkdir_internal(conn,
|
|
fname,
|
|
file_attributes,
|
|
psbuf);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
info = FILE_WAS_CREATED;
|
|
}
|
|
|
|
if (NT_STATUS_EQUAL(status,
|
|
NT_STATUS_OBJECT_NAME_COLLISION)) {
|
|
info = FILE_WAS_OPENED;
|
|
status = NT_STATUS_OK;
|
|
}
|
|
|
|
break;
|
|
|
|
case FILE_SUPERSEDE:
|
|
case FILE_OVERWRITE:
|
|
case FILE_OVERWRITE_IF:
|
|
default:
|
|
DEBUG(5,("open_directory: invalid create_disposition "
|
|
"0x%x for directory %s\n",
|
|
(unsigned int)create_disposition, fname));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if(!S_ISDIR(psbuf->st_mode)) {
|
|
DEBUG(5,("open_directory: %s is not a directory !\n",
|
|
fname ));
|
|
return NT_STATUS_NOT_A_DIRECTORY;
|
|
}
|
|
|
|
if (info == FILE_WAS_OPENED) {
|
|
uint32_t access_granted = 0;
|
|
status = check_open_rights(conn,
|
|
fname,
|
|
access_mask,
|
|
&access_granted);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("open_directory: check_open_rights on "
|
|
"file %s failed with %s\n",
|
|
fname,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
}
|
|
|
|
status = file_new(req, conn, &fsp);
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Setup the files_struct for it.
|
|
*/
|
|
|
|
fsp->mode = psbuf->st_mode;
|
|
fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
|
|
fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
|
|
fsp->file_pid = req ? req->smbpid : 0;
|
|
fsp->can_lock = False;
|
|
fsp->can_read = False;
|
|
fsp->can_write = False;
|
|
|
|
fsp->share_access = share_access;
|
|
fsp->fh->private_options = create_options;
|
|
/*
|
|
* According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
|
|
*/
|
|
fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
|
|
fsp->print_file = False;
|
|
fsp->modified = False;
|
|
fsp->oplock_type = NO_OPLOCK;
|
|
fsp->sent_oplock_break = NO_BREAK_SENT;
|
|
fsp->is_directory = True;
|
|
fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
|
|
|
|
string_set(&fsp->fsp_name,fname);
|
|
|
|
mtimespec = get_mtimespec(psbuf);
|
|
|
|
lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
|
|
conn->connectpath,
|
|
fname, &mtimespec);
|
|
|
|
if (lck == NULL) {
|
|
DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
|
|
file_free(req, fsp);
|
|
return NT_STATUS_SHARING_VIOLATION;
|
|
}
|
|
|
|
status = open_mode_check(conn, fname, lck,
|
|
access_mask, share_access,
|
|
create_options, &dir_existed);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(lck);
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
set_share_mode(lck, fsp, conn->server_info->utok.uid, 0, NO_OPLOCK);
|
|
|
|
/* For directories the delete on close bit at open time seems
|
|
always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
|
|
if (create_options & FILE_DELETE_ON_CLOSE) {
|
|
status = can_set_delete_on_close(fsp, True, 0);
|
|
if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
|
|
TALLOC_FREE(lck);
|
|
file_free(req, fsp);
|
|
return status;
|
|
}
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
/* Note that here we set the *inital* delete on close flag,
|
|
not the regular one. The magic gets handled in close. */
|
|
fsp->initial_delete_on_close = True;
|
|
}
|
|
}
|
|
|
|
TALLOC_FREE(lck);
|
|
|
|
if (pinfo) {
|
|
*pinfo = info;
|
|
}
|
|
|
|
*result = fsp;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS create_directory(connection_struct *conn, struct smb_request *req, const char *directory)
|
|
{
|
|
NTSTATUS status;
|
|
SMB_STRUCT_STAT sbuf;
|
|
files_struct *fsp;
|
|
|
|
SET_STAT_INVALID(sbuf);
|
|
|
|
status = SMB_VFS_CREATE_FILE(
|
|
conn, /* conn */
|
|
req, /* req */
|
|
0, /* root_dir_fid */
|
|
directory, /* fname */
|
|
0, /* create_file_flags */
|
|
FILE_READ_ATTRIBUTES, /* access_mask */
|
|
FILE_SHARE_NONE, /* share_access */
|
|
FILE_CREATE, /* create_disposition*/
|
|
FILE_DIRECTORY_FILE, /* create_options */
|
|
FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
|
|
0, /* oplock_request */
|
|
0, /* allocation_size */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
&fsp, /* result */
|
|
NULL, /* pinfo */
|
|
&sbuf); /* psbuf */
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
close_file(req, fsp, NORMAL_CLOSE);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Receive notification that one of our open files has been renamed by another
|
|
smbd process.
|
|
****************************************************************************/
|
|
|
|
void msg_file_was_renamed(struct messaging_context *msg,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id server_id,
|
|
DATA_BLOB *data)
|
|
{
|
|
files_struct *fsp;
|
|
char *frm = (char *)data->data;
|
|
struct file_id id;
|
|
const char *sharepath;
|
|
const char *newname;
|
|
size_t sp_len;
|
|
|
|
if (data->data == NULL
|
|
|| data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
|
|
DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
|
|
(int)data->length));
|
|
return;
|
|
}
|
|
|
|
/* Unpack the message. */
|
|
pull_file_id_24(frm, &id);
|
|
sharepath = &frm[24];
|
|
newname = sharepath + strlen(sharepath) + 1;
|
|
sp_len = strlen(sharepath);
|
|
|
|
DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
|
|
"file_id %s\n",
|
|
sharepath, newname, file_id_string_tos(&id)));
|
|
|
|
for(fsp = file_find_di_first(id); fsp; fsp = file_find_di_next(fsp)) {
|
|
if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
|
|
DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
|
|
fsp->fnum, fsp->fsp_name, newname ));
|
|
string_set(&fsp->fsp_name, newname);
|
|
} else {
|
|
/* TODO. JRA. */
|
|
/* Now we have the complete path we can work out if this is
|
|
actually within this share and adjust newname accordingly. */
|
|
DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
|
|
"not sharepath %s) "
|
|
"fnum %d from %s -> %s\n",
|
|
fsp->conn->connectpath,
|
|
sharepath,
|
|
fsp->fnum,
|
|
fsp->fsp_name,
|
|
newname ));
|
|
}
|
|
}
|
|
}
|
|
|
|
struct case_semantics_state {
|
|
connection_struct *conn;
|
|
bool case_sensitive;
|
|
bool case_preserve;
|
|
bool short_case_preserve;
|
|
};
|
|
|
|
/****************************************************************************
|
|
Restore case semantics.
|
|
****************************************************************************/
|
|
static int restore_case_semantics(struct case_semantics_state *state)
|
|
{
|
|
state->conn->case_sensitive = state->case_sensitive;
|
|
state->conn->case_preserve = state->case_preserve;
|
|
state->conn->short_case_preserve = state->short_case_preserve;
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Save case semantics.
|
|
****************************************************************************/
|
|
struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
|
|
connection_struct *conn)
|
|
{
|
|
struct case_semantics_state *result;
|
|
|
|
if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
|
|
DEBUG(0, ("talloc failed\n"));
|
|
return NULL;
|
|
}
|
|
|
|
result->conn = conn;
|
|
result->case_sensitive = conn->case_sensitive;
|
|
result->case_preserve = conn->case_preserve;
|
|
result->short_case_preserve = conn->short_case_preserve;
|
|
|
|
/* Set to POSIX. */
|
|
conn->case_sensitive = True;
|
|
conn->case_preserve = True;
|
|
conn->short_case_preserve = True;
|
|
|
|
talloc_set_destructor(result, restore_case_semantics);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* If a main file is opened for delete, all streams need to be checked for
|
|
* !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
|
|
* If that works, delete them all by setting the delete on close and close.
|
|
*/
|
|
|
|
static NTSTATUS open_streams_for_delete(connection_struct *conn,
|
|
const char *fname)
|
|
{
|
|
struct stream_struct *stream_info;
|
|
files_struct **streams;
|
|
int i;
|
|
unsigned int num_streams;
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
NTSTATUS status;
|
|
|
|
status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
|
|
&num_streams, &stream_info);
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
|
|
|| NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
|
|
DEBUG(10, ("no streams around\n"));
|
|
TALLOC_FREE(frame);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
|
|
nt_errstr(status)));
|
|
goto fail;
|
|
}
|
|
|
|
DEBUG(10, ("open_streams_for_delete found %d streams\n",
|
|
num_streams));
|
|
|
|
if (num_streams == 0) {
|
|
TALLOC_FREE(frame);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
streams = TALLOC_ARRAY(talloc_tos(), files_struct *, num_streams);
|
|
if (streams == NULL) {
|
|
DEBUG(0, ("talloc failed\n"));
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
for (i=0; i<num_streams; i++) {
|
|
char *streamname;
|
|
|
|
if (strequal(stream_info[i].name, "::$DATA")) {
|
|
streams[i] = NULL;
|
|
continue;
|
|
}
|
|
|
|
streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
|
|
stream_info[i].name);
|
|
|
|
if (streamname == NULL) {
|
|
DEBUG(0, ("talloc_aprintf failed\n"));
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
status = create_file_unixpath
|
|
(conn, /* conn */
|
|
NULL, /* req */
|
|
streamname, /* fname */
|
|
DELETE_ACCESS, /* access_mask */
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE
|
|
| FILE_SHARE_DELETE, /* share_access */
|
|
FILE_OPEN, /* create_disposition*/
|
|
NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* create_options */
|
|
FILE_ATTRIBUTE_NORMAL, /* file_attributes */
|
|
0, /* oplock_request */
|
|
0, /* allocation_size */
|
|
NULL, /* sd */
|
|
NULL, /* ea_list */
|
|
&streams[i], /* result */
|
|
NULL, /* pinfo */
|
|
NULL); /* psbuf */
|
|
|
|
TALLOC_FREE(streamname);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("Could not open stream %s: %s\n",
|
|
streamname, nt_errstr(status)));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* don't touch the variable "status" beyond this point :-)
|
|
*/
|
|
|
|
for (i -= 1 ; i >= 0; i--) {
|
|
if (streams[i] == NULL) {
|
|
continue;
|
|
}
|
|
|
|
DEBUG(10, ("Closing stream # %d, %s\n", i,
|
|
streams[i]->fsp_name));
|
|
close_file(NULL, streams[i], NORMAL_CLOSE);
|
|
}
|
|
|
|
fail:
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Wrapper around open_file_ntcreate and open_directory
|
|
*/
|
|
|
|
static NTSTATUS create_file_unixpath(connection_struct *conn,
|
|
struct smb_request *req,
|
|
const char *fname,
|
|
uint32_t access_mask,
|
|
uint32_t share_access,
|
|
uint32_t create_disposition,
|
|
uint32_t create_options,
|
|
uint32_t file_attributes,
|
|
uint32_t oplock_request,
|
|
uint64_t allocation_size,
|
|
struct security_descriptor *sd,
|
|
struct ea_list *ea_list,
|
|
|
|
files_struct **result,
|
|
int *pinfo,
|
|
SMB_STRUCT_STAT *psbuf)
|
|
{
|
|
SMB_STRUCT_STAT sbuf;
|
|
int info = FILE_WAS_OPENED;
|
|
files_struct *base_fsp = NULL;
|
|
files_struct *fsp = NULL;
|
|
NTSTATUS status;
|
|
|
|
DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
|
|
"file_attributes = 0x%x, share_access = 0x%x, "
|
|
"create_disposition = 0x%x create_options = 0x%x "
|
|
"oplock_request = 0x%x ea_list = 0x%p, sd = 0x%p, "
|
|
"fname = %s\n",
|
|
(unsigned int)access_mask,
|
|
(unsigned int)file_attributes,
|
|
(unsigned int)share_access,
|
|
(unsigned int)create_disposition,
|
|
(unsigned int)create_options,
|
|
(unsigned int)oplock_request,
|
|
ea_list, sd, fname));
|
|
|
|
if (create_options & FILE_OPEN_BY_FILE_ID) {
|
|
status = NT_STATUS_NOT_SUPPORTED;
|
|
goto fail;
|
|
}
|
|
|
|
if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto fail;
|
|
}
|
|
|
|
if (req == NULL) {
|
|
oplock_request |= INTERNAL_OPEN_ONLY;
|
|
}
|
|
|
|
if (psbuf != NULL) {
|
|
sbuf = *psbuf;
|
|
}
|
|
else {
|
|
if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
|
|
SET_STAT_INVALID(sbuf);
|
|
}
|
|
}
|
|
|
|
if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
|
|
&& (access_mask & DELETE_ACCESS)
|
|
&& !is_ntfs_stream_name(fname)) {
|
|
/*
|
|
* We can't open a file with DELETE access if any of the
|
|
* streams is open without FILE_SHARE_DELETE
|
|
*/
|
|
status = open_streams_for_delete(conn, fname);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* This is the correct thing to do (check every time) but can_delete
|
|
* is expensive (it may have to read the parent directory
|
|
* permissions). So for now we're not doing it unless we have a strong
|
|
* hint the client is really going to delete this file. If the client
|
|
* is forcing FILE_CREATE let the filesystem take care of the
|
|
* permissions. */
|
|
|
|
/* Setting FILE_SHARE_DELETE is the hint. */
|
|
|
|
if (lp_acl_check_permissions(SNUM(conn))
|
|
&& (create_disposition != FILE_CREATE)
|
|
&& (share_access & FILE_SHARE_DELETE)
|
|
&& (access_mask & DELETE_ACCESS)
|
|
&& (!(can_delete_file_in_directory(conn, fname) ||
|
|
can_access_file_acl(conn, fname, DELETE_ACCESS)))) {
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
DEBUG(10,("create_file_unixpath: open file %s "
|
|
"for delete ACCESS_DENIED\n", fname ));
|
|
goto fail;
|
|
}
|
|
|
|
#if 0
|
|
/* We need to support SeSecurityPrivilege for this. */
|
|
if ((access_mask & SEC_RIGHT_SYSTEM_SECURITY) &&
|
|
!user_has_privileges(current_user.nt_user_token,
|
|
&se_security)) {
|
|
status = NT_STATUS_PRIVILEGE_NOT_HELD;
|
|
goto fail;
|
|
}
|
|
#endif
|
|
|
|
if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
|
|
&& is_ntfs_stream_name(fname)
|
|
&& (!(create_options & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
|
|
char *base;
|
|
uint32 base_create_disposition;
|
|
|
|
if (create_options & FILE_DIRECTORY_FILE) {
|
|
status = NT_STATUS_NOT_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
|
|
status = split_ntfs_stream_name(talloc_tos(), fname,
|
|
&base, NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("create_file_unixpath: "
|
|
"split_ntfs_stream_name failed: %s\n",
|
|
nt_errstr(status)));
|
|
goto fail;
|
|
}
|
|
|
|
SMB_ASSERT(!is_ntfs_stream_name(base)); /* paranoia.. */
|
|
|
|
switch (create_disposition) {
|
|
case FILE_OPEN:
|
|
base_create_disposition = FILE_OPEN;
|
|
break;
|
|
default:
|
|
base_create_disposition = FILE_OPEN_IF;
|
|
break;
|
|
}
|
|
|
|
status = create_file_unixpath(conn, NULL, base, 0,
|
|
FILE_SHARE_READ
|
|
| FILE_SHARE_WRITE
|
|
| FILE_SHARE_DELETE,
|
|
base_create_disposition,
|
|
0, 0, 0, 0, NULL, NULL,
|
|
&base_fsp, NULL, NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("create_file_unixpath for base %s failed: "
|
|
"%s\n", base, nt_errstr(status)));
|
|
goto fail;
|
|
}
|
|
/* we don't need to low level fd */
|
|
fd_close(base_fsp);
|
|
}
|
|
|
|
/*
|
|
* If it's a request for a directory open, deal with it separately.
|
|
*/
|
|
|
|
if (create_options & FILE_DIRECTORY_FILE) {
|
|
|
|
if (create_options & FILE_NON_DIRECTORY_FILE) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto fail;
|
|
}
|
|
|
|
/* Can't open a temp directory. IFS kit test. */
|
|
if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
|
|
(file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* We will get a create directory here if the Win32
|
|
* app specified a security descriptor in the
|
|
* CreateDirectory() call.
|
|
*/
|
|
|
|
oplock_request = 0;
|
|
status = open_directory(
|
|
conn, req, fname, &sbuf, access_mask, share_access,
|
|
create_disposition, create_options, file_attributes,
|
|
&info, &fsp);
|
|
} else {
|
|
|
|
/*
|
|
* Ordinary file case.
|
|
*/
|
|
|
|
status = file_new(req, conn, &fsp);
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* We're opening the stream element of a base_fsp
|
|
* we already opened. Set up the base_fsp pointer.
|
|
*/
|
|
if (base_fsp) {
|
|
fsp->base_fsp = base_fsp;
|
|
}
|
|
|
|
status = open_file_ntcreate(conn,
|
|
req,
|
|
fname,
|
|
&sbuf,
|
|
access_mask,
|
|
share_access,
|
|
create_disposition,
|
|
create_options,
|
|
file_attributes,
|
|
oplock_request,
|
|
&info,
|
|
fsp);
|
|
|
|
if(!NT_STATUS_IS_OK(status)) {
|
|
file_free(req, fsp);
|
|
fsp = NULL;
|
|
}
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
|
|
|
|
/* A stream open never opens a directory */
|
|
|
|
if (base_fsp) {
|
|
status = NT_STATUS_FILE_IS_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Fail the open if it was explicitly a non-directory
|
|
* file.
|
|
*/
|
|
|
|
if (create_options & FILE_NON_DIRECTORY_FILE) {
|
|
status = NT_STATUS_FILE_IS_A_DIRECTORY;
|
|
goto fail;
|
|
}
|
|
|
|
oplock_request = 0;
|
|
status = open_directory(
|
|
conn, req, fname, &sbuf, access_mask,
|
|
share_access, create_disposition,
|
|
create_options, file_attributes,
|
|
&info, &fsp);
|
|
}
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
fsp->base_fsp = base_fsp;
|
|
|
|
/*
|
|
* According to the MS documentation, the only time the security
|
|
* descriptor is applied to the opened file is iff we *created* the
|
|
* file; an existing file stays the same.
|
|
*
|
|
* Also, it seems (from observation) that you can open the file with
|
|
* any access mask but you can still write the sd. We need to override
|
|
* the granted access before we call set_sd
|
|
* Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
|
|
*/
|
|
|
|
if ((sd != NULL) && (info == FILE_WAS_CREATED)
|
|
&& lp_nt_acl_support(SNUM(conn))) {
|
|
|
|
uint32_t sec_info_sent;
|
|
uint32_t saved_access_mask = fsp->access_mask;
|
|
|
|
sec_info_sent = get_sec_info(sd);
|
|
|
|
fsp->access_mask = FILE_GENERIC_ALL;
|
|
|
|
/* Convert all the generic bits. */
|
|
security_acl_map_generic(sd->dacl, &file_generic_mapping);
|
|
security_acl_map_generic(sd->sacl, &file_generic_mapping);
|
|
|
|
if (sec_info_sent & (OWNER_SECURITY_INFORMATION|
|
|
GROUP_SECURITY_INFORMATION|
|
|
DACL_SECURITY_INFORMATION|
|
|
SACL_SECURITY_INFORMATION)) {
|
|
status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
|
|
}
|
|
|
|
fsp->access_mask = saved_access_mask;
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
|
|
status = set_ea(conn, fsp, fname, ea_list);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (!fsp->is_directory && S_ISDIR(sbuf.st_mode)) {
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
goto fail;
|
|
}
|
|
|
|
/* Save the requested allocation size. */
|
|
if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
|
|
if (allocation_size
|
|
&& (allocation_size > sbuf.st_size)) {
|
|
fsp->initial_allocation_size = smb_roundup(
|
|
fsp->conn, allocation_size);
|
|
if (fsp->is_directory) {
|
|
/* Can't set allocation size on a directory. */
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
goto fail;
|
|
}
|
|
if (vfs_allocate_file_space(
|
|
fsp, fsp->initial_allocation_size) == -1) {
|
|
status = NT_STATUS_DISK_FULL;
|
|
goto fail;
|
|
}
|
|
} else {
|
|
fsp->initial_allocation_size = smb_roundup(
|
|
fsp->conn, (uint64_t)sbuf.st_size);
|
|
}
|
|
}
|
|
|
|
DEBUG(10, ("create_file_unixpath: info=%d\n", info));
|
|
|
|
*result = fsp;
|
|
if (pinfo != NULL) {
|
|
*pinfo = info;
|
|
}
|
|
if (psbuf != NULL) {
|
|
if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
|
|
*psbuf = sbuf;
|
|
}
|
|
else {
|
|
SMB_VFS_FSTAT(fsp, psbuf);
|
|
}
|
|
}
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
|
|
|
|
if (fsp != NULL) {
|
|
if (base_fsp && fsp->base_fsp == base_fsp) {
|
|
/*
|
|
* The close_file below will close
|
|
* fsp->base_fsp.
|
|
*/
|
|
base_fsp = NULL;
|
|
}
|
|
close_file(req, fsp, ERROR_CLOSE);
|
|
fsp = NULL;
|
|
}
|
|
if (base_fsp != NULL) {
|
|
close_file(req, base_fsp, ERROR_CLOSE);
|
|
base_fsp = NULL;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Calculate the full path name given a relative fid.
|
|
*/
|
|
NTSTATUS get_relative_fid_filename(connection_struct *conn,
|
|
struct smb_request *req,
|
|
uint16_t root_dir_fid,
|
|
const char *fname, char **new_fname)
|
|
{
|
|
files_struct *dir_fsp;
|
|
char *parent_fname = NULL;
|
|
|
|
if (root_dir_fid == 0 || !fname || !new_fname) {
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
dir_fsp = file_fsp(req, root_dir_fid);
|
|
|
|
if (dir_fsp == NULL) {
|
|
return NT_STATUS_INVALID_HANDLE;
|
|
}
|
|
|
|
if (!dir_fsp->is_directory) {
|
|
|
|
/*
|
|
* Check to see if this is a mac fork of some kind.
|
|
*/
|
|
|
|
if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
|
|
is_ntfs_stream_name(fname)) {
|
|
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
|
|
}
|
|
|
|
/*
|
|
we need to handle the case when we get a
|
|
relative open relative to a file and the
|
|
pathname is blank - this is a reopen!
|
|
(hint from demyn plantenberg)
|
|
*/
|
|
|
|
return NT_STATUS_INVALID_HANDLE;
|
|
}
|
|
|
|
if (ISDOT(dir_fsp->fsp_name)) {
|
|
/*
|
|
* We're at the toplevel dir, the final file name
|
|
* must not contain ./, as this is filtered out
|
|
* normally by srvstr_get_path and unix_convert
|
|
* explicitly rejects paths containing ./.
|
|
*/
|
|
parent_fname = talloc_strdup(talloc_tos(), "");
|
|
if (parent_fname == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
} else {
|
|
size_t dir_name_len = strlen(dir_fsp->fsp_name);
|
|
|
|
/*
|
|
* Copy in the base directory name.
|
|
*/
|
|
|
|
parent_fname = TALLOC_ARRAY(talloc_tos(), char,
|
|
dir_name_len+2);
|
|
if (parent_fname == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
memcpy(parent_fname, dir_fsp->fsp_name,
|
|
dir_name_len+1);
|
|
|
|
/*
|
|
* Ensure it ends in a '/'.
|
|
* We used TALLOC_SIZE +2 to add space for the '/'.
|
|
*/
|
|
|
|
if(dir_name_len
|
|
&& (parent_fname[dir_name_len-1] != '\\')
|
|
&& (parent_fname[dir_name_len-1] != '/')) {
|
|
parent_fname[dir_name_len] = '/';
|
|
parent_fname[dir_name_len+1] = '\0';
|
|
}
|
|
}
|
|
|
|
*new_fname = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
|
|
fname);
|
|
if (*new_fname == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS create_file_default(connection_struct *conn,
|
|
struct smb_request *req,
|
|
uint16_t root_dir_fid,
|
|
const char *fname,
|
|
uint32_t create_file_flags,
|
|
uint32_t access_mask,
|
|
uint32_t share_access,
|
|
uint32_t create_disposition,
|
|
uint32_t create_options,
|
|
uint32_t file_attributes,
|
|
uint32_t oplock_request,
|
|
uint64_t allocation_size,
|
|
struct security_descriptor *sd,
|
|
struct ea_list *ea_list,
|
|
|
|
files_struct **result,
|
|
int *pinfo,
|
|
SMB_STRUCT_STAT *psbuf)
|
|
{
|
|
struct case_semantics_state *case_state = NULL;
|
|
SMB_STRUCT_STAT sbuf;
|
|
int info = FILE_WAS_OPENED;
|
|
files_struct *fsp = NULL;
|
|
NTSTATUS status;
|
|
|
|
DEBUG(10,("create_file: access_mask = 0x%x "
|
|
"file_attributes = 0x%x, share_access = 0x%x, "
|
|
"create_disposition = 0x%x create_options = 0x%x "
|
|
"oplock_request = 0x%x "
|
|
"root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
|
|
"create_file_flags = 0x%x, fname = %s\n",
|
|
(unsigned int)access_mask,
|
|
(unsigned int)file_attributes,
|
|
(unsigned int)share_access,
|
|
(unsigned int)create_disposition,
|
|
(unsigned int)create_options,
|
|
(unsigned int)oplock_request,
|
|
(unsigned int)root_dir_fid,
|
|
ea_list, sd, create_file_flags, fname));
|
|
|
|
/*
|
|
* Calculate the filename from the root_dir_if if necessary.
|
|
*/
|
|
|
|
if (root_dir_fid != 0) {
|
|
char *new_fname;
|
|
|
|
status = get_relative_fid_filename(conn, req, root_dir_fid,
|
|
fname, &new_fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
fname = new_fname;
|
|
}
|
|
|
|
/*
|
|
* Check to see if this is a mac fork of some kind.
|
|
*/
|
|
|
|
if (is_ntfs_stream_name(fname)) {
|
|
enum FAKE_FILE_TYPE fake_file_type;
|
|
|
|
fake_file_type = is_fake_file(fname);
|
|
|
|
if (fake_file_type != FAKE_FILE_TYPE_NONE) {
|
|
|
|
/*
|
|
* Here we go! support for changing the disk quotas
|
|
* --metze
|
|
*
|
|
* We need to fake up to open this MAGIC QUOTA file
|
|
* and return a valid FID.
|
|
*
|
|
* w2k close this file directly after openening xp
|
|
* also tries a QUERY_FILE_INFO on the file and then
|
|
* close it
|
|
*/
|
|
status = open_fake_file(req, conn, req->vuid,
|
|
fake_file_type, fname,
|
|
access_mask, &fsp);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
ZERO_STRUCT(sbuf);
|
|
goto done;
|
|
}
|
|
|
|
if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
|
|
status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if ((req != NULL) && (req->flags2 & FLAGS2_DFS_PATHNAMES)) {
|
|
char *resolved_fname;
|
|
|
|
status = resolve_dfspath(talloc_tos(), conn, true, fname,
|
|
&resolved_fname);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
/*
|
|
* For PATH_NOT_COVERED we had
|
|
* reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
|
|
* ERRSRV, ERRbadpath);
|
|
* Need to fix in callers
|
|
*/
|
|
goto fail;
|
|
}
|
|
fname = resolved_fname;
|
|
}
|
|
|
|
/*
|
|
* Check if POSIX semantics are wanted.
|
|
*/
|
|
|
|
if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
|
|
case_state = set_posix_case_semantics(talloc_tos(), conn);
|
|
}
|
|
|
|
if (create_file_flags & CFF_DOS_PATH) {
|
|
char *converted_fname;
|
|
|
|
SET_STAT_INVALID(sbuf);
|
|
|
|
status = unix_convert(talloc_tos(), conn, fname, False,
|
|
&converted_fname, NULL, &sbuf);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
fname = converted_fname;
|
|
} else {
|
|
if (psbuf != NULL) {
|
|
sbuf = *psbuf;
|
|
} else {
|
|
if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
|
|
SET_STAT_INVALID(sbuf);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
TALLOC_FREE(case_state);
|
|
|
|
/* All file access must go through check_name() */
|
|
|
|
status = check_name(conn, fname);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = create_file_unixpath(
|
|
conn, req, fname, access_mask, share_access,
|
|
create_disposition, create_options, file_attributes,
|
|
oplock_request, allocation_size, sd, ea_list,
|
|
&fsp, &info, &sbuf);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
done:
|
|
DEBUG(10, ("create_file: info=%d\n", info));
|
|
|
|
*result = fsp;
|
|
if (pinfo != NULL) {
|
|
*pinfo = info;
|
|
}
|
|
if (psbuf != NULL) {
|
|
*psbuf = sbuf;
|
|
}
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
|
|
|
|
if (fsp != NULL) {
|
|
close_file(req, fsp, ERROR_CLOSE);
|
|
fsp = NULL;
|
|
}
|
|
return status;
|
|
}
|