1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /****************************************************************************
33 * Included Files
34 ****************************************************************************/
35
36 #include "errno.h"
37 #include "vfs_config.h"
38 #include "sys/stat.h"
39 #include "vnode.h"
40 #include "fs/mount.h"
41 #include "string.h"
42 #include "stdlib.h"
43 #include "utime.h"
44 #include <fcntl.h>
45
46 /****************************************************************************
47 * Global Functions
48 ****************************************************************************/
49
utime(const char * path,const struct utimbuf * ptimes)50 int utime(const char *path, const struct utimbuf *ptimes)
51 {
52 int ret;
53 char *fullpath = NULL;
54 struct Vnode *vnode = NULL;
55 time_t cur_sec;
56 struct IATTR attr = {0};
57
58 /* Sanity checks */
59
60
61 if (path == NULL) {
62 ret = -EINVAL;
63 goto errout;
64 }
65
66 if (!path[0]) {
67 ret = -ENOENT;
68 goto errout;
69 }
70
71 ret = vfs_normalize_path((const char *)NULL, path, &fullpath);
72 if (ret < 0) {
73 goto errout;
74 }
75
76 /* Get the vnode for this file */
77 VnodeHold();
78 ret = VnodeLookup(fullpath, &vnode, 0);
79 if (ret != LOS_OK) {
80 VnodeDrop();
81 goto errout_with_path;
82 }
83
84 if ((vnode->originMount) && (vnode->originMount->mountFlags & MS_RDONLY)) {
85 VnodeDrop();
86 ret = -EROFS;
87 goto errout_with_path;
88 }
89
90 if (vnode->vop && vnode->vop->Chattr) {
91 if (ptimes == NULL) {
92 /* get current seconds */
93 cur_sec = time(NULL);
94 attr.attr_chg_atime = cur_sec;
95 attr.attr_chg_mtime = cur_sec;
96 } else {
97 attr.attr_chg_atime = ptimes->actime;
98 attr.attr_chg_mtime = ptimes->modtime;
99 }
100 attr.attr_chg_valid = CHG_ATIME | CHG_MTIME;
101 ret = vnode->vop->Chattr(vnode, &attr);
102 if (ret != OK) {
103 VnodeDrop();
104 goto errout_with_path;
105 }
106 } else {
107 ret = -ENOSYS;
108 VnodeDrop();
109 goto errout_with_path;
110 }
111 VnodeDrop();
112
113 /* Successfully stat'ed the file */
114 free(fullpath);
115
116 return OK;
117
118 /* Failure conditions always set the errno appropriately */
119
120 errout_with_path:
121 free(fullpath);
122 errout:
123
124 if (ret != 0) {
125 set_errno(-ret);
126 }
127 return VFS_ERROR;
128 }
129