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Command: utime | Section: 3 | Source: OpenBSD | File: utime.3
UTIME(3) FreeBSD Library Functions Manual UTIME(3)
NAME
utime - set file times
SYNOPSIS
#include <sys/types.h>
#include <utime.h>
int
utime(const char *file, const struct utimbuf *timep);
DESCRIPTION
This interface is obsoleted by utimes(2).
The utime() function sets the access and modification times of the named
file.
If timep is NULL, the access and modification times are set to the
current time. The calling process must be the owner of the file or have
permission to write the file.
If timep is non-null, it specifies a pointer to a utimbuf structure, as
defined in <utime.h>:
struct utimbuf {
time_t actime; /* Access time */
time_t modtime; /* Modification time */
};
The access time is set to the value of the actime member, and the
modification time is set to the value of the modtime member. The times
are measured in seconds since 0 hours, 0 minutes, 0 seconds, January 1,
1970, Coordinated Universal Time (UTC). The calling process must be the
owner of the file or be the superuser.
In either case, the inode change-time of the file is set to the current
time.
RETURN VALUES
Upon successful completion, the value 0 is returned; otherwise the
value -1 is returned and the global variable errno is set to indicate the
error.
ERRORS
utime() will fail if:
[EACCES] Search permission is denied for a component of the
path prefix; or the timep argument is NULL and the
effective user ID of the process does not match the
owner of the file, the effective user ID is not that
of the superuser, and write access is denied.
[EFAULT] file or timep points outside the process's allocated
address space.
[EINVAL] The pathname contains a character with the high-order
bit set.
[EIO] An I/O error occurred while reading or writing the
affected inode.
[ELOOP] Too many symbolic links were encountered in
translating the pathname.
[ENAMETOOLONG] A component of a pathname exceeded NAME_MAX
characters, or an entire pathname (including the
terminating NUL) exceeded PATH_MAX bytes.
[ENOENT] The named file does not exist.
[ENOTDIR] A component of the path prefix is not a directory.
[EPERM] The timep argument is not NULL and the calling
process's effective user ID does not match the owner
of the file and is not the superuser.
[EROFS] The file system containing the file is mounted read-
only.
SEE ALSO
stat(2), utimes(2)
STANDARDS
The utime() function conforms to IEEE Std 1003.1-1988 ("POSIX.1").
HISTORY
A utime() function appeared in Version 7 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 September 11, 2022 FreeBSD 14.1-RELEASE-p8