xref: /illumos-kvm-cmd/hw/virtio-9p-xattr.h (revision 68396ea9)
1 /*
2  * Virtio 9p
3  *
4  * Copyright IBM, Corp. 2010
5  *
6  * Authors:
7  *  Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2.  See
10  * the COPYING file in the top-level directory.
11  *
12  */
13 #ifndef _QEMU_VIRTIO_9P_XATTR_H
14 #define _QEMU_VIRTIO_9P_XATTR_H
15 
16 #include <attr/xattr.h>
17 
18 typedef struct xattr_operations
19 {
20     const char *name;
21     ssize_t (*getxattr)(FsContext *ctx, const char *path,
22                         const char *name, void *value, size_t size);
23     ssize_t (*listxattr)(FsContext *ctx, const char *path,
24                          char *name, void *value, size_t size);
25     int (*setxattr)(FsContext *ctx, const char *path, const char *name,
26                     void *value, size_t size, int flags);
27     int (*removexattr)(FsContext *ctx,
28                        const char *path, const char *name);
29 } XattrOperations;
30 
31 
32 extern XattrOperations mapped_user_xattr;
33 extern XattrOperations passthrough_user_xattr;
34 
35 extern XattrOperations mapped_pacl_xattr;
36 extern XattrOperations mapped_dacl_xattr;
37 extern XattrOperations passthrough_acl_xattr;
38 extern XattrOperations none_acl_xattr;
39 
40 extern XattrOperations *mapped_xattr_ops[];
41 extern XattrOperations *passthrough_xattr_ops[];
42 extern XattrOperations *none_xattr_ops[];
43 
44 ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, const char *name,
45                        void *value, size_t size);
46 ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, void *value,
47                         size_t vsize);
48 int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name,
49                           void *value, size_t size, int flags);
50 int v9fs_remove_xattr(FsContext *ctx, const char *path, const char *name);
51 ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value,
52                      size_t size);
53 
pt_getxattr(FsContext * ctx,const char * path,const char * name,void * value,size_t size)54 static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,
55                                   const char *name, void *value, size_t size)
56 {
57     return lgetxattr(rpath(ctx, path), name, value, size);
58 }
59 
pt_setxattr(FsContext * ctx,const char * path,const char * name,void * value,size_t size,int flags)60 static inline int pt_setxattr(FsContext *ctx, const char *path,
61                               const char *name, void *value,
62                               size_t size, int flags)
63 {
64     return lsetxattr(rpath(ctx, path), name, value, size, flags);
65 }
66 
pt_removexattr(FsContext * ctx,const char * path,const char * name)67 static inline int pt_removexattr(FsContext *ctx,
68                                  const char *path, const char *name)
69 {
70     return lremovexattr(rpath(ctx, path), name);
71 }
72 
notsup_getxattr(FsContext * ctx,const char * path,const char * name,void * value,size_t size)73 static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,
74                                       const char *name, void *value,
75                                       size_t size)
76 {
77     errno = ENOTSUP;
78     return -1;
79 }
80 
notsup_setxattr(FsContext * ctx,const char * path,const char * name,void * value,size_t size,int flags)81 static inline int notsup_setxattr(FsContext *ctx, const char *path,
82                                   const char *name, void *value,
83                                   size_t size, int flags)
84 {
85     errno = ENOTSUP;
86     return -1;
87 }
88 
notsup_listxattr(FsContext * ctx,const char * path,char * name,void * value,size_t size)89 static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path,
90                                        char *name, void *value, size_t size)
91 {
92     return 0;
93 }
94 
notsup_removexattr(FsContext * ctx,const char * path,const char * name)95 static inline int notsup_removexattr(FsContext *ctx,
96                                      const char *path, const char *name)
97 {
98     errno = ENOTSUP;
99     return -1;
100 }
101 
102 #endif
103