-/*
+/*
Unix SMB/CIFS implementation.
file closing
Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Jeremy Allison 1992-2004.
+ Copyright (C) Jeremy Allison 1992-2007.
Copyright (C) Volker Lendecke 2005
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+extern struct current_user current_user;
+
/****************************************************************************
Run a file if it is a magic script.
****************************************************************************/
static void check_magic(files_struct *fsp,connection_struct *conn)
{
- if (!*lp_magicscript(SNUM(conn)))
+ int ret;
+ const char *magic_output = NULL;
+ SMB_STRUCT_STAT st;
+ int tmp_fd, outfd;
+ TALLOC_CTX *ctx = NULL;
+ const char *p;
+
+ if (!*lp_magicscript(SNUM(conn))) {
return;
+ }
DEBUG(5,("checking magic for %s\n",fsp->fsp_name));
- {
- char *p;
- if (!(p = strrchr_m(fsp->fsp_name,'/')))
- p = fsp->fsp_name;
- else
- p++;
-
- if (!strequal(lp_magicscript(SNUM(conn)),p))
- return;
- }
-
- {
- int ret;
- pstring magic_output;
- pstring fname;
- SMB_STRUCT_STAT st;
- int tmp_fd, outfd;
-
- pstrcpy(fname,fsp->fsp_name);
- if (*lp_magicoutput(SNUM(conn)))
- pstrcpy(magic_output,lp_magicoutput(SNUM(conn)));
- else
- slprintf(magic_output,sizeof(fname)-1, "%s.out",fname);
-
- chmod(fname,0755);
- ret = smbrun(fname,&tmp_fd);
- DEBUG(3,("Invoking magic command %s gave %d\n",fname,ret));
- unlink(fname);
- if (ret != 0 || tmp_fd == -1) {
- if (tmp_fd != -1)
- close(tmp_fd);
- return;
- }
- outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
- if (outfd == -1) {
- close(tmp_fd);
- return;
- }
+ if (!(p = strrchr_m(fsp->fsp_name,'/'))) {
+ p = fsp->fsp_name;
+ } else {
+ p++;
+ }
+
+ if (!strequal(lp_magicscript(SNUM(conn)),p)) {
+ return;
+ }
- if (sys_fstat(tmp_fd,&st) == -1) {
+ ctx = talloc_stackframe();
+
+ if (*lp_magicoutput(SNUM(conn))) {
+ magic_output = lp_magicoutput(SNUM(conn));
+ } else {
+ magic_output = talloc_asprintf(ctx,
+ "%s.out",
+ fsp->fsp_name);
+ }
+ if (!magic_output) {
+ TALLOC_FREE(ctx);
+ return;
+ }
+
+ chmod(fsp->fsp_name,0755);
+ ret = smbrun(fsp->fsp_name,&tmp_fd);
+ DEBUG(3,("Invoking magic command %s gave %d\n",
+ fsp->fsp_name,ret));
+
+ unlink(fsp->fsp_name);
+ if (ret != 0 || tmp_fd == -1) {
+ if (tmp_fd != -1) {
close(tmp_fd);
- close(outfd);
- return;
}
+ TALLOC_FREE(ctx);
+ return;
+ }
+ outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
+ if (outfd == -1) {
+ close(tmp_fd);
+ TALLOC_FREE(ctx);
+ return;
+ }
- transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
+ if (sys_fstat(tmp_fd,&st) == -1) {
close(tmp_fd);
close(outfd);
+ return;
}
+
+ transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
+ close(tmp_fd);
+ close(outfd);
+ TALLOC_FREE(ctx);
}
/****************************************************************************
Common code to close a file or a directory.
****************************************************************************/
-static int close_filestruct(files_struct *fsp)
-{
+static NTSTATUS close_filestruct(files_struct *fsp)
+{
+ NTSTATUS status = NT_STATUS_OK;
connection_struct *conn = fsp->conn;
- int ret = 0;
if (fsp->fh->fd != -1) {
- if(flush_write_cache(fsp, CLOSE_FLUSH) == -1)
- ret = -1;
-
+ if(flush_write_cache(fsp, CLOSE_FLUSH) == -1) {
+ status = map_nt_error_from_unix(errno);
+ }
delete_write_cache(fsp);
}
conn->num_files_open--;
- SAFE_FREE(fsp->wbmpx_ptr);
-
- return ret;
+ return status;
}
/****************************************************************************
share_mode_entry_to_message(msg, e);
- become_root();
- message_send_pid(e->pid, MSG_SMB_OPEN_RETRY,
- msg, MSG_SMB_SHARE_MODE_ENTRY_SIZE, True);
- unbecome_root();
+ messaging_send_buf(smbd_messaging_context(),
+ e->pid, MSG_SMB_OPEN_RETRY,
+ (uint8 *)msg,
+ MSG_SMB_SHARE_MODE_ENTRY_SIZE);
}
}
}
Deal with removing a share mode on last close.
****************************************************************************/
-static int close_remove_share_mode(files_struct *fsp, enum file_close_type close_type)
+static NTSTATUS close_remove_share_mode(files_struct *fsp,
+ enum file_close_type close_type)
{
connection_struct *conn = fsp->conn;
BOOL delete_file = False;
struct share_mode_lock *lck;
+ SMB_STRUCT_STAT sbuf;
+ NTSTATUS status = NT_STATUS_OK;
+ int ret;
+ struct file_id id;
/*
* Lock the share entries, and determine if we should delete
* This prevents race conditions with the file being created. JRA.
*/
- lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, NULL, NULL);
+ lck = get_share_mode_lock(NULL, fsp->file_id, NULL, NULL);
if (lck == NULL) {
- DEBUG(0, ("close_remove_share_mode: Could not get share mode lock for file %s\n", fsp->fsp_name));
- return EINVAL;
+ DEBUG(0, ("close_remove_share_mode: Could not get share mode "
+ "lock for file %s\n", fsp->fsp_name));
+ return NT_STATUS_INVALID_PARAMETER;
}
if (!del_share_mode(lck, fsp)) {
- DEBUG(0, ("close_remove_share_mode: Could not delete share entry for file %s\n", fsp->fsp_name));
+ DEBUG(0, ("close_remove_share_mode: Could not delete share "
+ "entry for file %s\n", fsp->fsp_name));
}
- delete_file = (lck->delete_on_close | lck->initial_delete_on_close);
+ if (fsp->initial_delete_on_close && (lck->delete_token == NULL)) {
+ BOOL became_user = False;
+
+ /* Initial delete on close was set and no one else
+ * wrote a real delete on close. */
+
+ if (current_user.vuid != fsp->vuid) {
+ become_user(conn, fsp->vuid);
+ became_user = True;
+ }
+ set_delete_on_close_lck(lck, True, ¤t_user.ut);
+ if (became_user) {
+ unbecome_user();
+ }
+ }
+
+ delete_file = lck->delete_on_close;
if (delete_file) {
int i;
/* See if others still have the file open. If this is the
- * case, then don't delete */
+ * case, then don't delete. If all opens are POSIX delete now. */
for (i=0; i<lck->num_share_modes; i++) {
- if (is_valid_share_mode_entry(&lck->share_modes[i])) {
+ struct share_mode_entry *e = &lck->share_modes[i];
+ if (is_valid_share_mode_entry(e)) {
+ if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
+ continue;
+ }
delete_file = False;
break;
}
* reference to a file.
*/
- if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
- delete_file &&
- lck->delete_token) {
- SMB_STRUCT_STAT sbuf;
+ if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
+ || !delete_file
+ || (lck->delete_token == NULL)) {
+ TALLOC_FREE(lck);
+ return NT_STATUS_OK;
+ }
- DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set - deleting file.\n",
- fsp->fsp_name));
+ /*
+ * Ok, we have to delete the file
+ */
- /* Become the user who requested the delete. */
+ DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
+ "- deleting file.\n", fsp->fsp_name));
- if (!push_sec_ctx()) {
- smb_panic("close_remove_share_mode: file %s. failed to push sec_ctx.\n");
- }
+ /* Become the user who requested the delete. */
- set_sec_ctx(lck->delete_token->uid,
- lck->delete_token->gid,
- lck->delete_token->ngroups,
- lck->delete_token->groups,
- NULL);
+ if (!push_sec_ctx()) {
+ smb_panic("close_remove_share_mode: file %s. failed to push "
+ "sec_ctx.\n");
+ }
- /* We can only delete the file if the name we have
- is still valid and hasn't been renamed. */
-
- if(SMB_VFS_STAT(conn,fsp->fsp_name,&sbuf) != 0) {
- DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
- "and stat failed with error %s\n",
- fsp->fsp_name, strerror(errno) ));
- } else {
- if(sbuf.st_dev != fsp->dev || sbuf.st_ino != fsp->inode) {
- DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set and "
- "dev and/or inode does not match\n",
- fsp->fsp_name ));
- DEBUG(5,("close_remove_share_mode: file %s. stored dev = %x, inode = %.0f "
- "stat dev = %x, inode = %.0f\n",
- fsp->fsp_name,
- (unsigned int)fsp->dev, (double)fsp->inode,
- (unsigned int)sbuf.st_dev, (double)sbuf.st_ino ));
-
- } else if(SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
- /*
- * This call can potentially fail as another smbd may have
- * had the file open with delete on close set and deleted
- * it when its last reference to this file went away. Hence
- * we log this but not at debug level zero.
- */
-
- DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
- "and unlink failed with error %s\n",
- fsp->fsp_name, strerror(errno) ));
- }
- }
- /* unbecome user. */
- pop_sec_ctx();
-
- process_pending_change_notify_queue((time_t)0);
+ set_sec_ctx(lck->delete_token->uid,
+ lck->delete_token->gid,
+ lck->delete_token->ngroups,
+ lck->delete_token->groups,
+ NULL);
+
+ /* We can only delete the file if the name we have is still valid and
+ hasn't been renamed. */
+
+ if (fsp->posix_open) {
+ ret = SMB_VFS_LSTAT(conn,fsp->fsp_name,&sbuf);
+ } else {
+ ret = SMB_VFS_STAT(conn,fsp->fsp_name,&sbuf);
+ }
+
+ if (ret != 0) {
+ DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
+ "was set and stat failed with error %s\n",
+ fsp->fsp_name, strerror(errno) ));
+ /*
+ * Don't save the errno here, we ignore this error
+ */
+ goto done;
}
+ id = vfs_file_id_from_sbuf(conn, &sbuf);
+
+ if (!file_id_equal(&fsp->file_id, &id)) {
+ DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
+ "was set and dev and/or inode does not match\n",
+ fsp->fsp_name ));
+ DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
+ "stat file_id %s\n",
+ fsp->fsp_name,
+ file_id_string_tos(&fsp->file_id),
+ file_id_string_tos(&id)));
+ /*
+ * Don't save the errno here, we ignore this error
+ */
+ goto done;
+ }
+
+ if (SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
+ /*
+ * This call can potentially fail as another smbd may
+ * have had the file open with delete on close set and
+ * deleted it when its last reference to this file
+ * went away. Hence we log this but not at debug level
+ * zero.
+ */
+
+ DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
+ "was set and unlink failed with error %s\n",
+ fsp->fsp_name, strerror(errno) ));
+
+ status = map_nt_error_from_unix(errno);
+ }
+
+ notify_fname(conn, NOTIFY_ACTION_REMOVED,
+ FILE_NOTIFY_CHANGE_FILE_NAME,
+ fsp->fsp_name);
+
+ /* As we now have POSIX opens which can unlink
+ * with other open files we may have taken
+ * this code path with more than one share mode
+ * entry - ensure we only delete once by resetting
+ * the delete on close flag. JRA.
+ */
+
+ set_delete_on_close_lck(lck, False, NULL);
+
+ done:
+
+ /* unbecome user. */
+ pop_sec_ctx();
+
TALLOC_FREE(lck);
- return 0;
+ return status;
}
/****************************************************************************
delete on close is done on normal and shutdown close.
****************************************************************************/
-static int close_normal_file(files_struct *fsp, enum file_close_type close_type)
+static NTSTATUS close_normal_file(files_struct *fsp, enum file_close_type close_type)
{
+ NTSTATUS status = NT_STATUS_OK;
+ NTSTATUS saved_status1 = NT_STATUS_OK;
+ NTSTATUS saved_status2 = NT_STATUS_OK;
+ NTSTATUS saved_status3 = NT_STATUS_OK;
connection_struct *conn = fsp->conn;
- int saved_errno = 0;
- int err = 0;
- int err1 = 0;
if (fsp->aio_write_behind) {
/*
*/
int ret = wait_for_aio_completion(fsp);
if (ret) {
- saved_errno = ret;
- err1 = -1;
+ saved_status1 = map_nt_error_from_unix(ret);
}
} else {
cancel_aio_by_fsp(fsp);
* error here, we must remember this.
*/
- if (close_filestruct(fsp) == -1) {
- saved_errno = errno;
- err1 = -1;
- }
+ saved_status2 = close_filestruct(fsp);
if (fsp->print_file) {
print_fsp_end(fsp, close_type);
file_free(fsp);
- return 0;
+ return NT_STATUS_OK;
}
/* If this is an old DOS or FCB open and we have multiple opens on
if (fsp->fh->ref_count == 1) {
/* Should we return on error here... ? */
- close_remove_share_mode(fsp, close_type);
+ saved_status3 = close_remove_share_mode(fsp, close_type);
}
if(fsp->oplock_type) {
release_file_oplock(fsp);
}
- locking_close_file(fsp);
+ locking_close_file(smbd_messaging_context(), fsp);
- err = fd_close(conn, fsp);
-
- /* Only save errno if fd_close failed and we don't already
- have an errno saved from a flush call. */
- if ((err1 != -1) && (err == -1)) {
- saved_errno = errno;
- }
+ status = fd_close(conn, fsp);
/* check for magic scripts */
if (close_type == NORMAL_CLOSE) {
* Ensure pending modtime is set after close.
*/
- if(fsp->pending_modtime && fsp->pending_modtime_owner) {
+ if (fsp->pending_modtime_owner && !null_timespec(fsp->pending_modtime)) {
set_filetime(conn, fsp->fsp_name, fsp->pending_modtime);
- } else if (fsp->last_write_time) {
+ } else if (!null_timespec(fsp->last_write_time)) {
set_filetime(conn, fsp->fsp_name, fsp->last_write_time);
}
+ if (NT_STATUS_IS_OK(status)) {
+ if (!NT_STATUS_IS_OK(saved_status1)) {
+ status = saved_status1;
+ } else if (!NT_STATUS_IS_OK(saved_status2)) {
+ status = saved_status2;
+ } else if (!NT_STATUS_IS_OK(saved_status3)) {
+ status = saved_status3;
+ }
+ }
+
DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
conn->user,fsp->fsp_name,
conn->num_files_open,
- (err == -1 || err1 == -1) ? strerror(saved_errno) : ""));
+ nt_errstr(status) ));
file_free(fsp);
-
- if (err == -1 || err1 == -1) {
- errno = saved_errno;
- return saved_errno;
- } else {
- return 0;
- }
+ return status;
}
/****************************************************************************
Close a directory opened by an NT SMB call.
****************************************************************************/
-static int close_directory(files_struct *fsp, enum file_close_type close_type)
+static NTSTATUS close_directory(files_struct *fsp, enum file_close_type close_type)
{
struct share_mode_lock *lck = 0;
BOOL delete_dir = False;
+ NTSTATUS status = NT_STATUS_OK;
/*
* NT can set delete_on_close of the last open
* reference to a directory also.
*/
- lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, NULL, NULL);
+ lck = get_share_mode_lock(NULL, fsp->file_id, NULL, NULL);
if (lck == NULL) {
DEBUG(0, ("close_directory: Could not get share mode lock for %s\n", fsp->fsp_name));
- return EINVAL;
+ return NT_STATUS_INVALID_PARAMETER;
}
if (!del_share_mode(lck, fsp)) {
DEBUG(0, ("close_directory: Could not delete share entry for %s\n", fsp->fsp_name));
}
- delete_dir = (lck->delete_on_close | lck->initial_delete_on_close);
+ if (fsp->initial_delete_on_close) {
+ BOOL became_user = False;
+
+ /* Initial delete on close was set - for
+ * directories we don't care if anyone else
+ * wrote a real delete on close. */
+
+ if (current_user.vuid != fsp->vuid) {
+ become_user(fsp->conn, fsp->vuid);
+ became_user = True;
+ }
+ send_stat_cache_delete_message(fsp->fsp_name);
+ set_delete_on_close_lck(lck, True, ¤t_user.ut);
+ if (became_user) {
+ unbecome_user();
+ }
+ }
+
+ delete_dir = lck->delete_on_close;
+
+ if (delete_dir) {
+ int i;
+ /* See if others still have the dir open. If this is the
+ * case, then don't delete. If all opens are POSIX delete now. */
+ for (i=0; i<lck->num_share_modes; i++) {
+ struct share_mode_entry *e = &lck->share_modes[i];
+ if (is_valid_share_mode_entry(e)) {
+ if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
+ continue;
+ }
+ delete_dir = False;
+ break;
+ }
+ }
+ }
if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
delete_dir &&
lck->delete_token) {
- BOOL ok;
/* Become the user who requested the delete. */
TALLOC_FREE(lck);
- ok = rmdir_internals(fsp->conn, fsp->fsp_name);
+ status = rmdir_internals(talloc_tos(),
+ fsp->conn, fsp->fsp_name);
- DEBUG(5,("close_directory: %s. Delete on close was set - deleting directory %s.\n",
- fsp->fsp_name, ok ? "succeeded" : "failed" ));
+ DEBUG(5,("close_directory: %s. Delete on close was set - "
+ "deleting directory returned %s.\n",
+ fsp->fsp_name, nt_errstr(status)));
/* unbecome user. */
pop_sec_ctx();
* now fail as the directory has been deleted.
*/
- if(ok) {
+ if(NT_STATUS_IS_OK(status)) {
remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_DELETE_PENDING);
- remove_pending_change_notify_requests_by_filename(fsp, NT_STATUS_DELETE_PENDING);
-
}
- process_pending_change_notify_queue((time_t)0);
} else {
TALLOC_FREE(lck);
- remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_CANCELLED);
+ remove_pending_change_notify_requests_by_fid(
+ fsp, NT_STATUS_OK);
}
/*
*/
close_filestruct(fsp);
file_free(fsp);
- return 0;
+ return status;
}
/****************************************************************************
Close a 'stat file' opened internally.
****************************************************************************/
-static int close_stat(files_struct *fsp)
+NTSTATUS close_stat(files_struct *fsp)
{
/*
* Do the code common to files and directories.
*/
close_filestruct(fsp);
file_free(fsp);
- return 0;
+ return NT_STATUS_OK;
}
/****************************************************************************
Close a files_struct.
****************************************************************************/
-int close_file(files_struct *fsp, enum file_close_type close_type)
+NTSTATUS close_file(files_struct *fsp, enum file_close_type close_type)
{
- if(fsp->is_directory)
+ if(fsp->is_directory) {
return close_directory(fsp, close_type);
- else if (fsp->is_stat)
+ } else if (fsp->is_stat) {
return close_stat(fsp);
- else if (fsp->fake_file_handle != NULL)
+ } else if (fsp->fake_file_handle != NULL) {
return close_fake_file(fsp);
- else
- return close_normal_file(fsp, close_type);
+ }
+ return close_normal_file(fsp, close_type);
}
git.samba.org / samba.git / blobdiff