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 /* 15 * Not so fast! You might want to read the 9p developer docs first: 16 * https://wiki.qemu.org/Documentation/9p 17 */ 18 19 #include "qemu/osdep.h" 20 #include "fsdev/qemu-fsdev.h" 21 #include "qemu/thread.h" 22 #include "qemu/main-loop.h" 23 #include "coth.h" 24 25 int coroutine_fn v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value, 26 size_t size) 27 { 28 int err; 29 V9fsState *s = pdu->s; 30 31 if (v9fs_request_cancelled(pdu)) { 32 return -EINTR; 33 } 34 v9fs_path_read_lock(s); 35 v9fs_co_run_in_worker( 36 { 37 err = s->ops->llistxattr(&s->ctx, path, value, size); 38 if (err < 0) { 39 err = -errno; 40 } 41 }); 42 v9fs_path_unlock(s); 43 return err; 44 } 45 46 int coroutine_fn v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path, 47 V9fsString *xattr_name, void *value, 48 size_t size) 49 { 50 int err; 51 V9fsState *s = pdu->s; 52 53 if (v9fs_request_cancelled(pdu)) { 54 return -EINTR; 55 } 56 v9fs_path_read_lock(s); 57 v9fs_co_run_in_worker( 58 { 59 err = s->ops->lgetxattr(&s->ctx, path, 60 xattr_name->data, 61 value, size); 62 if (err < 0) { 63 err = -errno; 64 } 65 }); 66 v9fs_path_unlock(s); 67 return err; 68 } 69 70 int coroutine_fn v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path, 71 V9fsString *xattr_name, void *value, 72 size_t size, int flags) 73 { 74 int err; 75 V9fsState *s = pdu->s; 76 77 if (v9fs_request_cancelled(pdu)) { 78 return -EINTR; 79 } 80 v9fs_path_read_lock(s); 81 v9fs_co_run_in_worker( 82 { 83 err = s->ops->lsetxattr(&s->ctx, path, 84 xattr_name->data, value, 85 size, flags); 86 if (err < 0) { 87 err = -errno; 88 } 89 }); 90 v9fs_path_unlock(s); 91 return err; 92 } 93 94 int coroutine_fn v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path, 95 V9fsString *xattr_name) 96 { 97 int err; 98 V9fsState *s = pdu->s; 99 100 if (v9fs_request_cancelled(pdu)) { 101 return -EINTR; 102 } 103 v9fs_path_read_lock(s); 104 v9fs_co_run_in_worker( 105 { 106 err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data); 107 if (err < 0) { 108 err = -errno; 109 } 110 }); 111 v9fs_path_unlock(s); 112 return err; 113 } 114