1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2022 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 if (path == NULL) {
61 ret = -EINVAL;
62 goto errout;
63 }
64
65 if (!path[0]) {
66 ret = -ENOENT;
67 goto errout;
68 }
69
70 ret = vfs_normalize_path((const char *)NULL, path, &fullpath);
71 if (ret < 0) {
72 goto errout;
73 }
74
75 /* Get the vnode for this file */
76 VnodeHold();
77 ret = VnodeLookup(fullpath, &vnode, 0);
78 if (ret != LOS_OK) {
79 VnodeDrop();
80 goto errout_with_path;
81 }
82
83 if ((vnode->originMount) && (vnode->originMount->mountFlags & MS_RDONLY)) {
84 VnodeDrop();
85 ret = -EROFS;
86 goto errout_with_path;
87 }
88
89 if (vnode->vop && vnode->vop->Chattr) {
90 if (ptimes == NULL) {
91 /* get current seconds */
92 cur_sec = time(NULL);
93 attr.attr_chg_atime = cur_sec;
94 attr.attr_chg_mtime = cur_sec;
95 } else {
96 attr.attr_chg_atime = ptimes->actime;
97 attr.attr_chg_mtime = ptimes->modtime;
98 }
99 attr.attr_chg_valid = CHG_ATIME | CHG_MTIME;
100 ret = vnode->vop->Chattr(vnode, &attr);
101 if (ret != OK) {
102 VnodeDrop();
103 goto errout_with_path;
104 }
105 } else {
106 ret = -ENOSYS;
107 VnodeDrop();
108 goto errout_with_path;
109 }
110 VnodeDrop();
111
112 /* Successfully stat'ed the file */
113 free(fullpath);
114
115 return OK;
116
117 /* Failure conditions always set the errno appropriately */
118
119 errout_with_path:
120 free(fullpath);
121 errout:
122
123 if (ret != 0) {
124 set_errno(-ret);
125 }
126 return VFS_ERROR;
127 }
128