LXR qemu/hw/9pfs/coxattr.c

   1/*
   2 * 9p backend
   3 *
   4 * Copyright IBM, Corp. 2011
   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
  14#include "qemu/osdep.h"
  15#include "fsdev/qemu-fsdev.h"
  16#include "qemu/thread.h"
  17#include "qemu/coroutine.h"
  18#include "coth.h"
  19
  20int coroutine_fn v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value,
  21                                    size_t size)
  22{
  23    int err;
  24    V9fsState *s = pdu->s;
  25
  26    if (v9fs_request_cancelled(pdu)) {
  27        return -EINTR;
  28    }
  29    v9fs_path_read_lock(s);
  30    v9fs_co_run_in_worker(
  31        {
  32            err = s->ops->llistxattr(&s->ctx, path, value, size);
  33            if (err < 0) {
  34                err = -errno;
  35            }
  36        });
  37    v9fs_path_unlock(s);
  38    return err;
  39}
  40
  41int coroutine_fn v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path,
  42                                   V9fsString *xattr_name, void *value,
  43                                   size_t size)
  44{
  45    int err;
  46    V9fsState *s = pdu->s;
  47
  48    if (v9fs_request_cancelled(pdu)) {
  49        return -EINTR;
  50    }
  51    v9fs_path_read_lock(s);
  52    v9fs_co_run_in_worker(
  53        {
  54            err = s->ops->lgetxattr(&s->ctx, path,
  55                                    xattr_name->data,
  56                                    value, size);
  57            if (err < 0) {
  58                err = -errno;
  59            }
  60        });
  61    v9fs_path_unlock(s);
  62    return err;
  63}
  64
  65int coroutine_fn v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path,
  66                                   V9fsString *xattr_name, void *value,
  67                                   size_t size, int flags)
  68{
  69    int err;
  70    V9fsState *s = pdu->s;
  71
  72    if (v9fs_request_cancelled(pdu)) {
  73        return -EINTR;
  74    }
  75    v9fs_path_read_lock(s);
  76    v9fs_co_run_in_worker(
  77        {
  78            err = s->ops->lsetxattr(&s->ctx, path,
  79                                    xattr_name->data, value,
  80                                    size, flags);
  81            if (err < 0) {
  82                err = -errno;
  83            }
  84        });
  85    v9fs_path_unlock(s);
  86    return err;
  87}
  88
  89int coroutine_fn v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path,
  90                                      V9fsString *xattr_name)
  91{
  92    int err;
  93    V9fsState *s = pdu->s;
  94
  95    if (v9fs_request_cancelled(pdu)) {
  96        return -EINTR;
  97    }
  98    v9fs_path_read_lock(s);
  99    v9fs_co_run_in_worker(
 100        {
 101            err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data);
 102            if (err < 0) {
 103                err = -errno;
 104            }
 105        });
 106    v9fs_path_unlock(s);
 107    return err;
 108}
 109