LXR qemu/hw/9pfs/9p-xattr.h

   1/*
   2 * 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_9P_XATTR_H
  14#define _QEMU_9P_XATTR_H
  15
  16#include "qemu/xattr.h"
  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
  35extern XattrOperations mapped_pacl_xattr;
  36extern XattrOperations mapped_dacl_xattr;
  37extern XattrOperations passthrough_acl_xattr;
  38extern XattrOperations none_acl_xattr;
  39
  40extern XattrOperations *mapped_xattr_ops[];
  41extern XattrOperations *passthrough_xattr_ops[];
  42extern XattrOperations *none_xattr_ops[];
  43
  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,
  49                          void *value, size_t size, int flags);
  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);
  53
  54static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,
  55                                  const char *name, void *value, size_t size)
  56{
  57    char *buffer;
  58    ssize_t ret;
  59
  60    buffer = rpath(ctx, path);
  61    ret = lgetxattr(buffer, name, value, size);
  62    g_free(buffer);
  63    return ret;
  64}
  65
  66static inline int pt_setxattr(FsContext *ctx, const char *path,
  67                              const char *name, void *value,
  68                              size_t size, int flags)
  69{
  70    char *buffer;
  71    int ret;
  72
  73    buffer = rpath(ctx, path);
  74    ret = lsetxattr(buffer, name, value, size, flags);
  75    g_free(buffer);
  76    return ret;
  77}
  78
  79static inline int pt_removexattr(FsContext *ctx,
  80                                 const char *path, const char *name)
  81{
  82    char *buffer;
  83    int ret;
  84
  85    buffer = rpath(ctx, path);
  86    ret = lremovexattr(path, name);
  87    g_free(buffer);
  88    return ret;
  89}
  90
  91static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,
  92                                      const char *name, void *value,
  93                                      size_t size)
  94{
  95    errno = ENOTSUP;
  96    return -1;
  97}
  98
  99static inline int notsup_setxattr(FsContext *ctx, const char *path,
 100                                  const char *name, void *value,
 101                                  size_t size, int flags)
 102{
 103    errno = ENOTSUP;
 104    return -1;
 105}
 106
 107static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path,
 108                                       char *name, void *value, size_t size)
 109{
 110    return 0;
 111}
 112
 113static inline int notsup_removexattr(FsContext *ctx,
 114                                     const char *path, const char *name)
 115{
 116    errno = ENOTSUP;
 117    return -1;
 118}
 119
 120#endif
 121