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
  20 int 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
  40 int 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
  64 int 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
  88 int 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 }