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

   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 "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[PATH_MAX];
  58    return lgetxattr(rpath(ctx, path, buffer), name, value, size);
  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{
  65    char buffer[PATH_MAX];
  66    return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
  67}
  68
  69static inline int pt_removexattr(FsContext *ctx,
  70                                 const char *path, const char *name)
  71{
  72    char buffer[PATH_MAX];
  73    return lremovexattr(rpath(ctx, path, buffer), name);
  74}
  75
  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
 105#endif
 106