2 * 9p user. xattr callback
4 * Copyright IBM, Corp. 2010
7 * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
14 #include "qemu/osdep.h"
16 #include "fsdev/file-op-9p.h"
20 static ssize_t
mp_user_getxattr(FsContext
*ctx
, const char *path
,
21 const char *name
, void *value
, size_t size
)
23 if (strncmp(name
, "user.virtfs.", 12) == 0) {
25 * Don't allow fetch of user.virtfs namesapce
26 * in case of mapped security
31 return local_getxattr_nofollow(ctx
, path
, name
, value
, size
);
34 static ssize_t
mp_user_listxattr(FsContext
*ctx
, const char *path
,
35 char *name
, void *value
, size_t size
)
37 int name_size
= strlen(name
) + 1;
38 if (strncmp(name
, "user.virtfs.", 12) == 0) {
40 /* check if it is a mapped posix acl */
41 if (strncmp(name
, "user.virtfs.system.posix_acl_", 29) == 0) {
42 /* adjust the name and size */
47 * Don't allow fetch of user.virtfs namesapce
48 * in case of mapped security
57 if (size
< name_size
) {
62 /* name_size includes the trailing NUL. */
63 memcpy(value
, name
, name_size
);
67 static int mp_user_setxattr(FsContext
*ctx
, const char *path
, const char *name
,
68 void *value
, size_t size
, int flags
)
73 if (strncmp(name
, "user.virtfs.", 12) == 0) {
75 * Don't allow fetch of user.virtfs namesapce
76 * in case of mapped security
81 buffer
= rpath(ctx
, path
);
82 ret
= lsetxattr(buffer
, name
, value
, size
, flags
);
87 static int mp_user_removexattr(FsContext
*ctx
,
88 const char *path
, const char *name
)
93 if (strncmp(name
, "user.virtfs.", 12) == 0) {
95 * Don't allow fetch of user.virtfs namesapce
96 * in case of mapped security
101 buffer
= rpath(ctx
, path
);
102 ret
= lremovexattr(buffer
, name
);
107 XattrOperations mapped_user_xattr
= {
109 .getxattr
= mp_user_getxattr
,
110 .setxattr
= mp_user_setxattr
,
111 .listxattr
= mp_user_listxattr
,
112 .removexattr
= mp_user_removexattr
,
115 XattrOperations passthrough_user_xattr
= {
117 .getxattr
= pt_getxattr
,
118 .setxattr
= pt_setxattr
,
119 .listxattr
= pt_listxattr
,
120 .removexattr
= pt_removexattr
,