2 Unix SMB/CIFS implementation.
4 POSIX NTVFS backend - xattr support using filesystem xattrs
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "vfs_posix.h"
24 #include "lib/util/wrap_xattr.h"
27 pull a xattr as a blob, from either a file or a file descriptor
29 NTSTATUS pull_xattr_blob_system(struct pvfs_state *pvfs,
31 const char *attr_name,
34 size_t estimated_size,
39 *blob = data_blob_talloc(mem_ctx, NULL, estimated_size+16);
40 if (blob->data == NULL) {
41 return NT_STATUS_NO_MEMORY;
46 ret = wrap_fgetxattr(fd, attr_name, blob->data, estimated_size);
48 ret = wrap_getxattr(fname, attr_name, blob->data, estimated_size);
50 if (ret == -1 && errno == ERANGE) {
52 blob->data = talloc_realloc(mem_ctx, blob->data,
53 uint8_t, estimated_size);
54 if (blob->data == NULL) {
55 return NT_STATUS_NO_MEMORY;
57 blob->length = estimated_size;
60 if (ret == -1 && errno == EPERM) {
64 ret = fstat(fd, &statbuf);
66 ret = stat(fname, &statbuf);
69 /* check if this is a directory and the sticky bit is set */
70 if (S_ISDIR(statbuf.st_mode) && (statbuf.st_mode & S_ISVTX)) {
71 /* pretend we could not find the xattr */
74 return NT_STATUS_NOT_FOUND;
77 /* if not this was probably a legittimate error
78 * reset ret and errno to the correct values */
87 return pvfs_map_errno(pvfs, errno);
96 push a xattr as a blob, from either a file or a file descriptor
98 NTSTATUS push_xattr_blob_system(struct pvfs_state *pvfs,
99 const char *attr_name,
102 const DATA_BLOB *blob)
107 ret = wrap_fsetxattr(fd, attr_name, blob->data, blob->length, 0);
109 ret = wrap_setxattr(fname, attr_name, blob->data, blob->length, 0);
112 return pvfs_map_errno(pvfs, errno);
122 NTSTATUS delete_xattr_system(struct pvfs_state *pvfs, const char *attr_name,
123 const char *fname, int fd)
128 ret = wrap_fremovexattr(fd, attr_name);
130 ret = wrap_removexattr(fname, attr_name);
133 return pvfs_map_errno(pvfs, errno);
140 unlink a file - cleanup any xattrs
142 NTSTATUS unlink_xattr_system(struct pvfs_state *pvfs, const char *fname)
144 /* nothing needs to be done for filesystem based xattrs */