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 "qemu/main-loop.h"
  19#include "coth.h"
  20
  21int coroutine_fn v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value,
  22                                    size_t size)
  23{
  24    int err;
  25    V9fsState *s = pdu->s;
  26
  27    if (v9fs_request_cancelled(pdu)) {
  28        return -EINTR;
  29    }
  30    v9fs_path_read_lock(s);
  31    v9fs_co_run_in_worker(
  32        {
  33            err = s->ops->llistxattr(&s->ctx, path, value, size);
  34            if (err < 0) {
  35                err = -errno;
  36            }
  37        });
  38    v9fs_path_unlock(s);
  39    return err;
  40}
  41
  42int coroutine_fn v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path,
  43                                   V9fsString *xattr_name, void *value,
  44                                   size_t size)
  45{
  46    int err;
  47    V9fsState *s = pdu->s;
  48
  49    if (v9fs_request_cancelled(pdu)) {
  50        return -EINTR;
  51    }
  52    v9fs_path_read_lock(s);
  53    v9fs_co_run_in_worker(
  54        {
  55            err = s->ops->lgetxattr(&s->ctx, path,
  56                                    xattr_name->data,
  57                                    value, size);
  58            if (err < 0) {
  59                err = -errno;
  60            }
  61        });
  62    v9fs_path_unlock(s);
  63    return err;
  64}
  65
  66int coroutine_fn v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path,
  67                                   V9fsString *xattr_name, void *value,
  68                                   size_t size, int flags)
  69{
  70    int err;
  71    V9fsState *s = pdu->s;
  72
  73    if (v9fs_request_cancelled(pdu)) {
  74        return -EINTR;
  75    }
  76    v9fs_path_read_lock(s);
  77    v9fs_co_run_in_worker(
  78        {
  79            err = s->ops->lsetxattr(&s->ctx, path,
  80                                    xattr_name->data, value,
  81                                    size, flags);
  82            if (err < 0) {
  83                err = -errno;
  84            }
  85        });
  86    v9fs_path_unlock(s);
  87    return err;
  88}
  89
  90int coroutine_fn v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path,
  91                                      V9fsString *xattr_name)
  92{
  93    int err;
  94    V9fsState *s = pdu->s;
  95
  96    if (v9fs_request_cancelled(pdu)) {
  97        return -EINTR;
  98    }
  99    v9fs_path_read_lock(s);
 100    v9fs_co_run_in_worker(
 101        {
 102            err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data);
 103            if (err < 0) {
 104                err = -errno;
 105            }
 106        });
 107    v9fs_path_unlock(s);
 108    return err;
 109}
 110