hw/9pfs/coxattr.c

   1
   2 /*
   3  * Virtio 9p backend
   4  *
   5  * Copyright IBM, Corp. 2011
   6  *
   7  * Authors:
   8  *  Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2.  See
  11  * the COPYING file in the top-level directory.
  12  *
  13  */
  14
  15 #include "fsdev/qemu-fsdev.h"
  16 #include "qemu-thread.h"
  17 #include "qemu-coroutine.h"
  18 #include "virtio-9p-coth.h"
  19
  20 int v9fs_co_llistxattr(V9fsState *s, V9fsString *path, void *value, size_t size)
  21 {
  22     int err;
  23
  24     qemu_co_rwlock_rdlock(&s->rename_lock);
  25     v9fs_co_run_in_worker(
  26         {
  27             err = s->ops->llistxattr(&s->ctx, path->data, value, size);
  28             if (err < 0) {
  29                 err = -errno;
  30             }
  31         });
  32     qemu_co_rwlock_unlock(&s->rename_lock);
  33     return err;
  34 }
  35
  36 int v9fs_co_lgetxattr(V9fsState *s, V9fsString *path,
  37                       V9fsString *xattr_name,
  38                       void *value, size_t size)
  39 {
  40     int err;
  41
  42     qemu_co_rwlock_rdlock(&s->rename_lock);
  43     v9fs_co_run_in_worker(
  44         {
  45             err = s->ops->lgetxattr(&s->ctx, path->data,
  46                                     xattr_name->data,
  47                                     value, size);
  48             if (err < 0) {
  49                 err = -errno;
  50             }
  51         });
  52     qemu_co_rwlock_unlock(&s->rename_lock);
  53     return err;
  54 }
  55
  56 int v9fs_co_lsetxattr(V9fsState *s, V9fsString *path,
  57                       V9fsString *xattr_name, void *value,
  58                       size_t size, int flags)
  59 {
  60     int err;
  61
  62     qemu_co_rwlock_rdlock(&s->rename_lock);
  63     v9fs_co_run_in_worker(
  64         {
  65             err = s->ops->lsetxattr(&s->ctx, path->data,
  66                                     xattr_name->data, value,
  67                                     size, flags);
  68             if (err < 0) {
  69                 err = -errno;
  70             }
  71         });
  72     qemu_co_rwlock_unlock(&s->rename_lock);
  73     return err;
  74 }
  75
  76 int v9fs_co_lremovexattr(V9fsState *s, V9fsString *path,
  77                          V9fsString *xattr_name)
  78 {
  79     int err;
  80
  81     qemu_co_rwlock_rdlock(&s->rename_lock);
  82     v9fs_co_run_in_worker(
  83         {
  84             err = s->ops->lremovexattr(&s->ctx, path->data,
  85                                        xattr_name->data);
  86             if (err < 0) {
  87                 err = -errno;
  88             }
  89         });
  90     qemu_co_rwlock_unlock(&s->rename_lock);
  91     return err;
  92 }