static NTSTATUS cmd_pathfunc(struct vfs_state *vfs, TALLOC_CTX *mem_ctx, int argc, const char **argv)
{
int ret = -1;
if (argc != 2) {
printf("Usage: %s <path>\n", argv[0]);
return NT_STATUS_OK;
}
if (strcmp("rmdir", argv[0]) == 0 ) {
ret = SMB_VFS_RMDIR(vfs->conn, argv[1]);
} else if (strcmp("unlink", argv[0]) == 0 ) {
ret = SMB_VFS_UNLINK(vfs->conn, argv[1]);
} else if (strcmp("chdir", argv[0]) == 0 ) {
ret = SMB_VFS_CHDIR(vfs->conn, argv[1]);
} else {
printf("%s: error=%d (invalid function name!)\n", argv[0], errno);
return NT_STATUS_UNSUCCESSFUL;
}
if (ret == -1) {
printf("%s: error=%d (%s)\n", argv[0], errno, strerror(errno));
return NT_STATUS_UNSUCCESSFUL;
}
printf("%s: ok\n", argv[0]);
return NT_STATUS_OK;
}
static NTSTATUS rmdir_internals(TALLOC_CTX *ctx, files_struct *fsp)
{
connection_struct *conn = fsp->conn;
struct smb_filename *smb_dname = fsp->fsp_name;
int ret;
SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
/* Might be a symlink. */
if(SMB_VFS_LSTAT(conn, smb_dname) != 0) {
return map_nt_error_from_unix(errno);
}
if (S_ISLNK(smb_dname->st.st_ex_mode)) {
/* Is what it points to a directory ? */
if(SMB_VFS_STAT(conn, smb_dname) != 0) {
return map_nt_error_from_unix(errno);
}
if (!(S_ISDIR(smb_dname->st.st_ex_mode))) {
return NT_STATUS_NOT_A_DIRECTORY;
}
ret = SMB_VFS_UNLINK(conn, smb_dname);
} else {
ret = SMB_VFS_RMDIR(conn, smb_dname->base_name);
}
if (ret == 0) {
notify_fname(conn, NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_DIR_NAME,
smb_dname->base_name);
return NT_STATUS_OK;
}
if(((errno == ENOTEMPTY)||(errno == EEXIST)) && *lp_veto_files(talloc_tos(), SNUM(conn))) {
/*
* Check to see if the only thing in this directory are
* vetoed files/directories. If so then delete them and
* retry. If we fail to delete any of them (and we *don't*
* do a recursive delete) then fail the rmdir.
*/
SMB_STRUCT_STAT st;
const char *dname = NULL;
char *talloced = NULL;
long dirpos = 0;
struct smb_Dir *dir_hnd = OpenDir(talloc_tos(), conn,
smb_dname->base_name, NULL,
0);
if(dir_hnd == NULL) {
errno = ENOTEMPTY;
goto err;
}
while ((dname = ReadDirName(dir_hnd, &dirpos, &st,
&talloced)) != NULL) {
if((strcmp(dname, ".") == 0) || (strcmp(dname, "..")==0)) {
TALLOC_FREE(talloced);
continue;
}
if (!is_visible_file(conn, smb_dname->base_name, dname,
&st, false)) {
TALLOC_FREE(talloced);
continue;
}
if(!IS_VETO_PATH(conn, dname)) {
TALLOC_FREE(dir_hnd);
TALLOC_FREE(talloced);
errno = ENOTEMPTY;
goto err;
}
TALLOC_FREE(talloced);
}
/* We only have veto files/directories.
* Are we allowed to delete them ? */
if(!lp_delete_veto_files(SNUM(conn))) {
TALLOC_FREE(dir_hnd);
errno = ENOTEMPTY;
goto err;
}
/* Do a recursive delete. */
RewindDir(dir_hnd,&dirpos);
while ((dname = ReadDirName(dir_hnd, &dirpos, &st,
&talloced)) != NULL) {
struct smb_filename *smb_dname_full = NULL;
char *fullname = NULL;
bool do_break = true;
if (ISDOT(dname) || ISDOTDOT(dname)) {
TALLOC_FREE(talloced);
continue;
}
if (!is_visible_file(conn, smb_dname->base_name, dname,
&st, false)) {
TALLOC_FREE(talloced);
continue;
}
fullname = talloc_asprintf(ctx,
"%s/%s",
smb_dname->base_name,
dname);
if(!fullname) {
errno = ENOMEM;
goto err_break;
}
smb_dname_full = synthetic_smb_fname(
talloc_tos(), fullname, NULL, NULL);
if (smb_dname_full == NULL) {
errno = ENOMEM;
goto err_break;
}
if(SMB_VFS_LSTAT(conn, smb_dname_full) != 0) {
goto err_break;
}
if(smb_dname_full->st.st_ex_mode & S_IFDIR) {
if(!recursive_rmdir(ctx, conn,
smb_dname_full)) {
goto err_break;
}
if(SMB_VFS_RMDIR(conn,
smb_dname_full->base_name) != 0) {
goto err_break;
}
} else if(SMB_VFS_UNLINK(conn, smb_dname_full) != 0) {
goto err_break;
}
/* Successful iteration. */
do_break = false;
err_break:
TALLOC_FREE(fullname);
TALLOC_FREE(smb_dname_full);
TALLOC_FREE(talloced);
if (do_break)
break;
}
TALLOC_FREE(dir_hnd);
/* Retry the rmdir */
ret = SMB_VFS_RMDIR(conn, smb_dname->base_name);
}
err:
if (ret != 0) {
DEBUG(3,("rmdir_internals: couldn't remove directory %s : "
"%s\n", smb_fname_str_dbg(smb_dname),
strerror(errno)));
return map_nt_error_from_unix(errno);
}
notify_fname(conn, NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_DIR_NAME,
smb_dname->base_name);
return NT_STATUS_OK;
}
bool recursive_rmdir(TALLOC_CTX *ctx,
connection_struct *conn,
struct smb_filename *smb_dname)
{
const char *dname = NULL;
char *talloced = NULL;
bool ret = True;
long offset = 0;
SMB_STRUCT_STAT st;
struct smb_Dir *dir_hnd;
SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
dir_hnd = OpenDir(talloc_tos(), conn, smb_dname->base_name, NULL, 0);
if(dir_hnd == NULL)
return False;
while((dname = ReadDirName(dir_hnd, &offset, &st, &talloced))) {
struct smb_filename *smb_dname_full = NULL;
char *fullname = NULL;
bool do_break = true;
if (ISDOT(dname) || ISDOTDOT(dname)) {
TALLOC_FREE(talloced);
continue;
}
if (!is_visible_file(conn, smb_dname->base_name, dname, &st,
false)) {
TALLOC_FREE(talloced);
continue;
}
/* Construct the full name. */
fullname = talloc_asprintf(ctx,
"%s/%s",
smb_dname->base_name,
dname);
if (!fullname) {
errno = ENOMEM;
goto err_break;
}
smb_dname_full = synthetic_smb_fname(talloc_tos(), fullname,
NULL, NULL);
if (smb_dname_full == NULL) {
errno = ENOMEM;
goto err_break;
}
if(SMB_VFS_LSTAT(conn, smb_dname_full) != 0) {
goto err_break;
}
if(smb_dname_full->st.st_ex_mode & S_IFDIR) {
if(!recursive_rmdir(ctx, conn, smb_dname_full)) {
goto err_break;
}
if(SMB_VFS_RMDIR(conn,
smb_dname_full->base_name) != 0) {
goto err_break;
}
} else if(SMB_VFS_UNLINK(conn, smb_dname_full) != 0) {
goto err_break;
}
/* Successful iteration. */
do_break = false;
err_break:
TALLOC_FREE(smb_dname_full);
TALLOC_FREE(fullname);
TALLOC_FREE(talloced);
if (do_break) {
ret = false;
break;
}
}
TALLOC_FREE(dir_hnd);
return ret;
}
static NTSTATUS close_remove_share_mode(files_struct *fsp,
enum file_close_type close_type)
{
connection_struct *conn = fsp->conn;
struct server_id self = messaging_server_id(conn->sconn->msg_ctx);
bool delete_file = false;
bool changed_user = false;
struct share_mode_lock *lck = NULL;
NTSTATUS status = NT_STATUS_OK;
NTSTATUS tmp_status;
struct file_id id;
const struct security_unix_token *del_token = NULL;
const struct security_token *del_nt_token = NULL;
bool got_tokens = false;
bool normal_close;
int ret_flock, retries = 1;
/* Ensure any pending write time updates are done. */
if (fsp->update_write_time_event) {
update_write_time_handler(fsp->conn->sconn->ev_ctx,
fsp->update_write_time_event,
timeval_current(),
(void *)fsp);
}
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0, ("close_remove_share_mode: Could not get share mode "
"lock for file %s\n", fsp_str_dbg(fsp)));
return NT_STATUS_INVALID_PARAMETER;
}
if (fsp->write_time_forced) {
DEBUG(10,("close_remove_share_mode: write time forced "
"for file %s\n",
fsp_str_dbg(fsp)));
set_close_write_time(fsp, lck->data->changed_write_time);
} else if (fsp->update_write_time_on_close) {
/* Someone had a pending write. */
if (null_timespec(fsp->close_write_time)) {
DEBUG(10,("close_remove_share_mode: update to current time "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to current time due to "normal" write. */
set_close_write_time(fsp, timespec_current());
} else {
DEBUG(10,("close_remove_share_mode: write time pending "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to time set on close call. */
set_close_write_time(fsp, fsp->close_write_time);
}
}
if (fsp->initial_delete_on_close &&
!is_delete_on_close_set(lck, fsp->name_hash)) {
bool became_user = False;
/* Initial delete on close was set and no one else
* wrote a real delete on close. */
if (get_current_vuid(conn) != fsp->vuid) {
become_user(conn, fsp->vuid);
became_user = True;
}
fsp->delete_on_close = true;
set_delete_on_close_lck(fsp, lck,
get_current_nttok(conn),
get_current_utok(conn));
if (became_user) {
unbecome_user();
}
}
delete_file = is_delete_on_close_set(lck, fsp->name_hash);
if (delete_file) {
int i;
/* See if others still have the file open via this pathname.
If this is the case, then don't delete. If all opens are
POSIX delete now. */
for (i=0; i<lck->data->num_share_modes; i++) {
struct share_mode_entry *e = &lck->data->share_modes[i];
if (!is_valid_share_mode_entry(e)) {
continue;
}
if (e->name_hash != fsp->name_hash) {
continue;
}
if ((fsp->posix_flags & FSP_POSIX_FLAGS_OPEN)
&& (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
continue;
}
if (serverid_equal(&self, &e->pid) &&
(e->share_file_id == fsp->fh->gen_id)) {
continue;
}
if (share_mode_stale_pid(lck->data, i)) {
continue;
}
delete_file = False;
break;
}
}
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
normal_close = (close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE);
if (!normal_close || !delete_file) {
status = NT_STATUS_OK;
goto done;
}
/*
* Ok, we have to delete the file
*/
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
"- deleting file.\n", fsp_str_dbg(fsp)));
/*
* Don't try to update the write time when we delete the file
*/
fsp->update_write_time_on_close = false;
got_tokens = get_delete_on_close_token(lck, fsp->name_hash,
&del_nt_token, &del_token);
SMB_ASSERT(got_tokens);
if (!unix_token_equal(del_token, get_current_utok(conn))) {
/* Become the user who requested the delete. */
DEBUG(5,("close_remove_share_mode: file %s. "
"Change user to uid %u\n",
fsp_str_dbg(fsp),
(unsigned int)del_token->uid));
if (!push_sec_ctx()) {
smb_panic("close_remove_share_mode: file %s. failed to push "
"sec_ctx.\n");
}
set_sec_ctx(del_token->uid,
del_token->gid,
del_token->ngroups,
del_token->groups,
del_nt_token);
changed_user = true;
}
/* We can only delete the file if the name we have is still valid and
hasn't been renamed. */
tmp_status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(tmp_status)) {
DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
"was set and stat failed with error %s\n",
fsp_str_dbg(fsp), nt_errstr(tmp_status)));
/*
* Don't save the errno here, we ignore this error
*/
goto done;
}
id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st);
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_str_dbg(fsp)));
DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
"stat file_id %s\n",
fsp_str_dbg(fsp),
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 ((conn->fs_capabilities & FILE_NAMED_STREAMS)
&& !is_ntfs_stream_smb_fname(fsp->fsp_name)) {
status = delete_all_streams(conn, fsp->fsp_name->base_name);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(5, ("delete_all_streams failed: %s\n",
nt_errstr(status)));
goto done;
}
}
retry_delete:
/* temporary files with delete on close set will not be deleted on a
* cifs share using a netapp backend since they are opened with
* read + write access mask.
* close the file to allow the delete.
*/
if (fsp->can_write && !S_ISDIR(fsp->fsp_name->st.st_ex_mode) &&
fsp->fh->ref_count == 1 && retries) {
status = fd_close(fsp);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("close_remove_share_mode: Error %s closing %s\n",
nt_errstr(status),
smb_fname_str_dbg(fsp->fsp_name)));
goto skip_retry;
}
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_str_dbg(fsp), strerror(errno)));
status = map_nt_error_from_unix(errno);
retries = 0;
goto retry_delete;
}
} 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_str_dbg(fsp), strerror(errno)));
status = map_nt_error_from_unix(errno);
}
}
/* 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.
*/
skip_retry:
fsp->delete_on_close = false;
reset_delete_on_close_lck(fsp, lck);
done:
if (changed_user) {
/* unbecome user. */
pop_sec_ctx();
}
/* remove filesystem sharemodes */
ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, 0, 0);
if (ret_flock == -1) {
DEBUG(2, ("close_remove_share_mode: removing kernel flock for "
"%s failed: %s\n", fsp_str_dbg(fsp),
strerror(errno)));
}
if (!del_share_mode(lck, fsp)) {
DEBUG(0, ("close_remove_share_mode: Could not delete share "
"entry for file %s\n", fsp_str_dbg(fsp)));
}
TALLOC_FREE(lck);
if (delete_file) {
/*
* Do the notification after we released the share
* mode lock. Inside notify_fname we take out another
* tdb lock. With ctdb also accessing our databases,
* this can lead to deadlocks. Putting this notify
* after the TALLOC_FREE(lck) above we avoid locking
* two records simultaneously. Notifies are async and
* informational only, so calling the notify_fname
* without holding the share mode lock should not do
* any harm.
*/
notify_fname(conn, NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_FILE_NAME,
fsp->fsp_name->base_name);
}
return status;
}
NTSTATUS delete_all_streams(connection_struct *conn, const char *fname)
{
struct stream_struct *stream_info = NULL;
int i;
unsigned int num_streams = 0;
TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS status;
status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
&num_streams, &stream_info);
if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
DEBUG(10, ("no streams around\n"));
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("vfs_streaminfo failed: %s\n",
nt_errstr(status)));
goto fail;
}
DEBUG(10, ("delete_all_streams found %d streams\n",
num_streams));
if (num_streams == 0) {
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
for (i=0; i<num_streams; i++) {
int res;
struct smb_filename *smb_fname_stream;
if (strequal(stream_info[i].name, "::$DATA")) {
continue;
}
smb_fname_stream = synthetic_smb_fname(
talloc_tos(), fname, stream_info[i].name, NULL);
if (smb_fname_stream == NULL) {
DEBUG(0, ("talloc_aprintf failed\n"));
status = NT_STATUS_NO_MEMORY;
goto fail;
}
res = SMB_VFS_UNLINK(conn, smb_fname_stream);
if (res == -1) {
status = map_nt_error_from_unix(errno);
DEBUG(10, ("Could not delete stream %s: %s\n",
smb_fname_str_dbg(smb_fname_stream),
strerror(errno)));
TALLOC_FREE(smb_fname_stream);
break;
}
TALLOC_FREE(smb_fname_stream);
}
fail:
TALLOC_FREE(frame);
return status;
}
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;
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, 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 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));
}
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. 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_file = False;
break;
}
}
}
/* Notify any deferred opens waiting on this close. */
notify_deferred_opens(lck);
reply_to_oplock_break_requests(fsp);
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
|| !delete_file
|| (lck->delete_token == NULL)) {
TALLOC_FREE(lck);
return NT_STATUS_OK;
}
/*
* Ok, we have to delete the file
*/
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
"- deleting file.\n", fsp->fsp_name));
/* Become the user who requested the delete. */
if (!push_sec_ctx()) {
smb_panic("close_remove_share_mode: file %s. failed to push "
"sec_ctx.\n");
}
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;
}
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 ));
/*
* 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 status;
}
static NTSTATUS close_remove_share_mode(files_struct *fsp,
enum file_close_type close_type)
{
connection_struct *conn = fsp->conn;
bool delete_file = false;
bool changed_user = false;
struct share_mode_lock *lck = NULL;
NTSTATUS status = NT_STATUS_OK;
NTSTATUS tmp_status;
struct file_id id;
/* Ensure any pending write time updates are done. */
if (fsp->update_write_time_event) {
update_write_time_handler(smbd_event_context(),
fsp->update_write_time_event,
timeval_current(),
(void *)fsp);
}
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
NULL);
if (lck == NULL) {
DEBUG(0, ("close_remove_share_mode: Could not get share mode "
"lock for file %s\n", fsp_str_dbg(fsp)));
status = NT_STATUS_INVALID_PARAMETER;
goto done;
}
if (fsp->write_time_forced) {
DEBUG(10,("close_remove_share_mode: write time forced "
"for file %s\n",
fsp_str_dbg(fsp)));
set_close_write_time(fsp, lck->changed_write_time);
} else if (fsp->update_write_time_on_close) {
/* Someone had a pending write. */
if (null_timespec(fsp->close_write_time)) {
DEBUG(10,("close_remove_share_mode: update to current time "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to current time due to "normal" write. */
set_close_write_time(fsp, timespec_current());
} else {
DEBUG(10,("close_remove_share_mode: write time pending "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to time set on close call. */
set_close_write_time(fsp, fsp->close_write_time);
}
}
if (!del_share_mode(lck, fsp)) {
DEBUG(0, ("close_remove_share_mode: Could not delete share "
"entry for file %s\n",
fsp_str_dbg(fsp)));
}
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;
}
fsp->delete_on_close = 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. 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_file = False;
break;
}
}
}
/* Notify any deferred opens waiting on this close. */
notify_deferred_opens(lck);
reply_to_oplock_break_requests(fsp);
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE)
|| !delete_file
|| (lck->delete_token == NULL)) {
TALLOC_FREE(lck);
return NT_STATUS_OK;
}
/*
* Ok, we have to delete the file
*/
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
"- deleting file.\n", fsp_str_dbg(fsp)));
/*
* Don't try to update the write time when we delete the file
*/
fsp->update_write_time_on_close = false;
if (!unix_token_equal(lck->delete_token, ¤t_user.ut)) {
/* Become the user who requested the delete. */
DEBUG(5,("close_remove_share_mode: file %s. "
"Change user to uid %u\n",
fsp_str_dbg(fsp),
(unsigned int)lck->delete_token->uid));
if (!push_sec_ctx()) {
smb_panic("close_remove_share_mode: file %s. failed to push "
"sec_ctx.\n");
}
set_sec_ctx(lck->delete_token->uid,
lck->delete_token->gid,
lck->delete_token->ngroups,
lck->delete_token->groups,
NULL);
changed_user = true;
}
/* We can only delete the file if the name we have is still valid and
hasn't been renamed. */
tmp_status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(tmp_status)) {
DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
"was set and stat failed with error %s\n",
fsp_str_dbg(fsp), nt_errstr(tmp_status)));
/*
* Don't save the errno here, we ignore this error
*/
goto done;
}
id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st);
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_str_dbg(fsp)));
DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
"stat file_id %s\n",
fsp_str_dbg(fsp),
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 ((conn->fs_capabilities & FILE_NAMED_STREAMS)
&& !is_ntfs_stream_smb_fname(fsp->fsp_name)) {
status = delete_all_streams(conn, fsp->fsp_name->base_name);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(5, ("delete_all_streams failed: %s\n",
nt_errstr(status)));
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_str_dbg(fsp), strerror(errno)));
status = map_nt_error_from_unix(errno);
}
notify_fname(conn, NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_FILE_NAME,
fsp->fsp_name->base_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.
*/
fsp->delete_on_close = false;
set_delete_on_close_lck(lck, False, NULL);
done:
if (changed_user) {
/* unbecome user. */
pop_sec_ctx();
}
TALLOC_FREE(lck);
return status;
}
static int 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;
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, 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;
}
if (!del_share_mode(lck, fsp)) {
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 (delete_file) {
int i;
/* See if others still have the file open. If this is the
* case, then don't delete */
for (i=0; i<lck->num_share_modes; i++) {
if (is_valid_share_mode_entry(&lck->share_modes[i])) {
delete_file = False;
break;
}
}
}
/* Notify any deferred opens waiting on this close. */
notify_deferred_opens(lck);
reply_to_oplock_break_requests(fsp);
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
delete_file &&
lck->delete_token) {
SMB_STRUCT_STAT sbuf;
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set - deleting file.\n",
fsp->fsp_name));
/* Become the user who requested the delete. */
if (!push_sec_ctx()) {
smb_panic("close_remove_share_mode: file %s. failed to push sec_ctx.\n");
}
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(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);
}
TALLOC_FREE(lck);
return 0;
}
static int close_normal_file(files_struct *fsp, BOOL normal_close)
{
share_mode_entry *share_entry = NULL;
size_t share_entry_count = 0;
BOOL delete_on_close = False;
connection_struct *conn = fsp->conn;
int err = 0;
int err1 = 0;
remove_pending_lock_requests_by_fid(fsp);
/*
* If we're flushing on a close we can get a write
* error here, we must remember this.
*/
if (close_filestruct(fsp) == -1)
err1 = -1;
if (fsp->print_file) {
print_fsp_end(fsp, normal_close);
file_free(fsp);
return 0;
}
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lock_share_entry_fsp(fsp);
if (fsp->delete_on_close) {
/*
* Modify the share mode entry for all files open
* on this device and inode to tell other smbds we have
* changed the delete on close flag. The last closer will delete the file
* if flag is set.
*/
NTSTATUS status =set_delete_on_close_over_all(fsp, fsp->delete_on_close);
if (NT_STATUS_V(status) != NT_STATUS_V(NT_STATUS_OK))
DEBUG(0,("close_normal_file: failed to change delete on close flag for file %s\n",
fsp->fsp_name ));
}
share_entry_count = del_share_mode(fsp, &share_entry);
DEBUG(10,("close_normal_file: share_entry_count = %lu for file %s\n",
(unsigned long)share_entry_count, fsp->fsp_name ));
/*
* We delete on close if it's the last open, and the
* delete on close flag was set in the entry we just deleted.
*/
if ((share_entry_count == 0) && share_entry &&
GET_DELETE_ON_CLOSE_FLAG(share_entry->share_mode) )
delete_on_close = True;
SAFE_FREE(share_entry);
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
if (normal_close && delete_on_close) {
DEBUG(5,("close_file: file %s. Delete on close was set - deleting file.\n",
fsp->fsp_name));
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_file: file %s. Delete on close was set and unlink failed \
with error %s\n", fsp->fsp_name, strerror(errno) ));
}
