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cadence_uart: Fix buffer overflow
[qemu.git] / hw / 9pfs / virtio-9p-xattr.h
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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
4f26f2b6 16#include "qemu-xattr.h"
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17
18typedef 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
32extern XattrOperations mapped_user_xattr;
33extern XattrOperations passthrough_user_xattr;
34
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35extern XattrOperations mapped_pacl_xattr;
36extern XattrOperations mapped_dacl_xattr;
37extern XattrOperations passthrough_acl_xattr;
38extern XattrOperations none_acl_xattr;
39
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40extern XattrOperations *mapped_xattr_ops[];
41extern XattrOperations *passthrough_xattr_ops[];
42extern XattrOperations *none_xattr_ops[];
43
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44ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, const char *name,
45 void *value, size_t size);
46ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, void *value,
47 size_t vsize);
48int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name,
fc22118d 49 void *value, size_t size, int flags);
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50int v9fs_remove_xattr(FsContext *ctx, const char *path, const char *name);
51ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value,
52 size_t size);
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53
54static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,
55 const char *name, void *value, size_t size)
56{
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57 char buffer[PATH_MAX];
58 return lgetxattr(rpath(ctx, path, buffer), name, value, size);
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59}
60
61static inline int pt_setxattr(FsContext *ctx, const char *path,
62 const char *name, void *value,
63 size_t size, int flags)
64{
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65 char buffer[PATH_MAX];
66 return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
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67}
68
69static inline int pt_removexattr(FsContext *ctx,
70 const char *path, const char *name)
71{
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72 char buffer[PATH_MAX];
73 return lremovexattr(rpath(ctx, path, buffer), name);
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74}
75
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76static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,
77 const char *name, void *value,
78 size_t size)
79{
80 errno = ENOTSUP;
81 return -1;
82}
83
84static inline int notsup_setxattr(FsContext *ctx, const char *path,
85 const char *name, void *value,
86 size_t size, int flags)
87{
88 errno = ENOTSUP;
89 return -1;
90}
91
92static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path,
93 char *name, void *value, size_t size)
94{
95 return 0;
96}
97
98static inline int notsup_removexattr(FsContext *ctx,
99 const char *path, const char *name)
100{
101 errno = ENOTSUP;
102 return -1;
103}
104
fc22118d 105#endif