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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - unlink
Copyright (C) Andrew Tridgell 2004
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 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "vfs_posix.h"
#include "system/dir.h"
/*
unlink a stream
*/
static NTSTATUS pvfs_unlink_stream(struct pvfs_state *pvfs,
struct ntvfs_request *req,
struct pvfs_filename *name,
uint16_t attrib)
{
NTSTATUS status;
if (!name->stream_exists) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* make sure its matches the given attributes */
status = pvfs_match_attrib(pvfs, name, attrib, 0);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = pvfs_can_delete(pvfs, req, name, NULL);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return pvfs_stream_delete(pvfs, name, -1);
}
/*
unlink one file
*/
static NTSTATUS pvfs_unlink_one(struct pvfs_state *pvfs,
struct ntvfs_request *req,
struct pvfs_filename *name,
uint32_t attrib)
{
NTSTATUS status;
/* make sure its matches the given attributes */
status = pvfs_match_attrib(pvfs, name, attrib, 0);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = pvfs_can_delete(pvfs, req, name, NULL);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
return NT_STATUS_FILE_IS_A_DIRECTORY;
}
if (name->st.st_nlink == 1) {
status = pvfs_xattr_unlink_hook(pvfs, name->full_name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
/* finally try the actual unlink */
if (unlink(name->full_name) == -1) {
status = pvfs_map_errno(pvfs, errno);
}
if (NT_STATUS_IS_OK(status)) {
notify_trigger(pvfs->notify_context,
NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_FILE_NAME,
name->full_name);
}
return status;
}
/*
delete a file - the dirtype specifies the file types to include in the search.
The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
*/
NTSTATUS pvfs_unlink(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req,
union smb_unlink *unl)
{
struct pvfs_state *pvfs = ntvfs->private_data;
struct pvfs_dir *dir;
NTSTATUS status;
uint32_t total_deleted=0;
struct pvfs_filename *name;
const char *fname;
off_t ofs;
/* resolve the cifs name to a posix name */
status = pvfs_resolve_name(pvfs, req, unl->unlink.in.pattern,
PVFS_RESOLVE_WILDCARD | PVFS_RESOLVE_STREAMS, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!name->exists && !name->has_wildcard) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
if (name->exists &&
(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
return NT_STATUS_FILE_IS_A_DIRECTORY;
}
if (name->stream_name) {
return pvfs_unlink_stream(pvfs, req, name, unl->unlink.in.attrib);
}
/* get list of matching files */
status = pvfs_list_start(pvfs, name, req, &dir);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = NT_STATUS_NO_SUCH_FILE;
talloc_free(name);
ofs = 0;
while ((fname = pvfs_list_next(dir, &ofs))) {
/* this seems to be a special case */
if ((unl->unlink.in.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
(ISDOT(fname) || ISDOTDOT(fname))) {
return NT_STATUS_OBJECT_NAME_INVALID;
}
/* get a pvfs_filename object */
status = pvfs_resolve_partial(pvfs, req,
pvfs_list_unix_path(dir),
fname, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = pvfs_unlink_one(pvfs, req, name, unl->unlink.in.attrib);
if (NT_STATUS_IS_OK(status)) {
total_deleted++;
}
talloc_free(name);
}
if (total_deleted > 0) {
status = NT_STATUS_OK;
}
return status;
}
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