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