1 /*-
2 * Copyright (c) 2015 Jilles Tjoelker
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: stable/10/lib/libc/sys/utimensat.c 294099 2016-01-15 20:55:44Z jilles $");
29
30 #include "namespace.h"
31 #include <sys/stat.h>
32
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <time.h>
36 #include "un-namespace.h"
37
38 #include "libc_private.h"
39
40 int
utimensat(int fd,const char * path,const struct timespec times[2],int flag)41 utimensat(int fd, const char *path, const struct timespec times[2], int flag)
42 {
43 struct timeval now, tv[2], *tvp;
44 struct stat sb;
45 int osreldate;
46
47 osreldate = __getosreldate();
48 if (osreldate >= 1100056 ||
49 (osreldate >= 1002506 && osreldate < 1100000))
50 return (__sys_utimensat(fd, path, times, flag));
51
52 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) {
53 errno = EINVAL;
54 return (-1);
55 }
56 if (times == NULL || (times[0].tv_nsec == UTIME_NOW &&
57 times[1].tv_nsec == UTIME_NOW))
58 tvp = NULL;
59 else if (times[0].tv_nsec == UTIME_OMIT &&
60 times[1].tv_nsec == UTIME_OMIT)
61 return (0);
62 else {
63 if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) &&
64 times[0].tv_nsec != UTIME_NOW &&
65 times[0].tv_nsec != UTIME_OMIT) {
66 errno = EINVAL;
67 return (-1);
68 }
69 if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) &&
70 times[1].tv_nsec != UTIME_NOW &&
71 times[1].tv_nsec != UTIME_OMIT) {
72 errno = EINVAL;
73 return (-1);
74 }
75 tv[0].tv_sec = times[0].tv_sec;
76 tv[0].tv_usec = times[0].tv_nsec / 1000;
77 tv[1].tv_sec = times[1].tv_sec;
78 tv[1].tv_usec = times[1].tv_nsec / 1000;
79 tvp = tv;
80 if (times[0].tv_nsec == UTIME_OMIT ||
81 times[1].tv_nsec == UTIME_OMIT) {
82 if (fstatat(fd, path, &sb, flag) == -1)
83 return (-1);
84 if (times[0].tv_nsec == UTIME_OMIT) {
85 tv[0].tv_sec = sb.st_atim.tv_sec;
86 tv[0].tv_usec = sb.st_atim.tv_nsec / 1000;
87 }
88 if (times[1].tv_nsec == UTIME_OMIT) {
89 tv[1].tv_sec = sb.st_mtim.tv_sec;
90 tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000;
91 }
92 }
93 if (times[0].tv_nsec == UTIME_NOW ||
94 times[1].tv_nsec == UTIME_NOW) {
95 if (gettimeofday(&now, NULL) == -1)
96 return (-1);
97 if (times[0].tv_nsec == UTIME_NOW)
98 tv[0] = now;
99 if (times[1].tv_nsec == UTIME_NOW)
100 tv[1] = now;
101 }
102 }
103 if ((flag & AT_SYMLINK_NOFOLLOW) == 0)
104 return (futimesat(fd, path, tvp));
105 else if ((flag & AT_SYMLINK_NOFOLLOW) != 0 &&
106 (fd == AT_FDCWD || path[0] == '/'))
107 return (lutimes(path, tvp));
108 else {
109 errno = ENOTSUP;
110 return (-1);
111 }
112 }
113