1UTIMES(P) POSIX Programmer's Manual UTIMES(P)
2
6 utimes - set file access and modification times (LEGACY)
7
9 #include <sys/time.h>
10 int utimes(const char *path, const struct timeval times[2]);
12
15 The utimes() function shall set the access and modification times of
16 the file pointed to by the path argument to the value of the times
17 argument. The utimes() function allows time specifications accurate to
18 the microsecond.
19 For utimes(), the times argument is an array of timeval structures. The
21 first array member represents the date and time of last access, and the
22 second member represents the date and time of last modification. The
23 times in the timeval structure are measured in seconds and microseconds
24 since the Epoch, although rounding toward the nearest second may occur.
25 If the times argument is a null pointer, the access and modification
27 times of the file shall be set to the current time. The effective user
28 ID of the process shall match the owner of the file, or has write
29 access to the file or appropriate privileges to use this call in this
30 manner. Upon completion, utimes() shall mark the time of the last file
31 status change, st_ctime, for update.
32
34 Upon successful completion, 0 shall be returned. Otherwise, -1 shall be
35 returned and errno shall be set to indicate the error, and the file
36 times shall not be affected.
37
39 The utimes() function shall fail if:
40 EACCES Search permission is denied by a component of the path prefix;
42 or the times argument is a null pointer and the effective user
43 ID of the process does not match the owner of the file and write
44 access is denied.
45 ELOOP A loop exists in symbolic links encountered during resolution of
47 the path argument.
48 ENAMETOOLONG
50 The length of the path argument exceeds {PATH_MAX} or a pathname
51 component is longer than {NAME_MAX}.
52 ENOENT A component of path does not name an existing file or path is an
54 empty string.
55 ENOTDIR
57 A component of the path prefix is not a directory.
58 EPERM The times argument is not a null pointer and the calling
60 process' effective user ID has write access to the file but does
61 not match the owner of the file and the calling process does not
62 have the appropriate privileges.
63 EROFS The file system containing the file is read-only.
65 The utimes() function may fail if:
68 ELOOP More than {SYMLOOP_MAX} symbolic links were encountered during
70 resolution of the path argument.
71 ENAMETOOLONG
73 Pathname resolution of a symbolic link produced an intermediate
74 result whose length exceeds {PATH_MAX}.
75 The following sections are informative.
78
80 None.
81
83 For applications portability, the utime() function should be used to
84 set file access and modification times instead of utimes().
85
87 None.
88
90 This function may be withdrawn in a future version.
91
93 utime() , the Base Definitions volume of IEEE Std 1003.1-2001,
94 <sys/time.h>
95
97 Portions of this text are reprinted and reproduced in electronic form
98 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
99 -- Portable Operating System Interface (POSIX), The Open Group Base
100 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
101 Electrical and Electronics Engineers, Inc and The Open Group. In the
102 event of any discrepancy between this version and the original IEEE and
103 The Open Group Standard, the original IEEE and The Open Group Standard
104 is the referee document. The original Standard can be obtained online
105 at http://www.opengroup.org/unix/online.html .
106IEEE/The Open Group 2003 UTIMES(P)