2 * Virtio 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 <sys/types.h>
16 #include "virtio-9p.h"
17 #include "file-op-9p.h"
18 #include "virtio-9p-xattr.h"
21 static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
22 const char *name, void *value, size_t size)
24 if (strncmp(name, "user.virtfs.", 12) == 0) {
26 * Don't allow fetch of user.virtfs namesapce
27 * in case of mapped security
32 return lgetxattr(rpath(ctx, path), name, value, size);
35 static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
36 char *name, void *value, size_t size)
38 int name_size = strlen(name) + 1;
39 if (strncmp(name, "user.virtfs.", 12) == 0) {
41 /* check if it is a mapped posix acl */
42 if (strncmp(name, "user.virtfs.system.posix_acl_", 29) == 0) {
43 /* adjust the name and size */
48 * Don't allow fetch of user.virtfs namesapce
49 * in case of mapped security
58 if (size < name_size) {
63 strncpy(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)
70 if (strncmp(name, "user.virtfs.", 12) == 0) {
72 * Don't allow fetch of user.virtfs namesapce
73 * in case of mapped security
78 return lsetxattr(rpath(ctx, path), name, value, size, flags);
81 static int mp_user_removexattr(FsContext *ctx,
82 const char *path, const char *name)
84 if (strncmp(name, "user.virtfs.", 12) == 0) {
86 * Don't allow fetch of user.virtfs namesapce
87 * in case of mapped security
92 return lremovexattr(rpath(ctx, path), name);
95 XattrOperations mapped_user_xattr = {
97 .getxattr = mp_user_getxattr,
98 .setxattr = mp_user_setxattr,
99 .listxattr = mp_user_listxattr,
100 .removexattr = mp_user_removexattr,
103 XattrOperations passthrough_user_xattr = {
105 .getxattr = pt_getxattr,
106 .setxattr = pt_setxattr,
107 .listxattr = pt_listxattr,
108 .removexattr = pt_removexattr,