UTIME(2) System Calls Manual UTIME(2)NAME
utime - set file times
SYNOPSIS
#include <sys/types.h>
#include <utime.h>
int utime(const char *file, struct utimbuf *times)
DESCRIPTION
The utime call uses the "accessed" and "updated" times from the utimbuf structure pointed to by times to set the corresponding recorded
times for file.
Struct utimbuf is defined in <utime.h> as follows:
struct utimbuf {
time_t actime; /* access time */
time_t modtime; /* modification time */
};
The caller must be the owner of the file or the super-user. The "inode-changed" time of the file is set to the current time.
RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.
ERRORS
Utime will fail if one or more of the following are true:
[ENOTDIR] A component of the path prefix is not a directory.
[EINVAL] The pathname contains a character with the high-order bit set.
[ENAMETOOLONG] The path name exceeds PATH_MAX characters.
[ENOENT] The named file does not exist.
[ELOOP] Too many symbolic links were encountered in translating the pathname. (Minix-vmd)
[EPERM] The process is not super-user and not the owner of the file.
[EACCES] Search permission is denied for a component of the path prefix.
[EROFS] The file system containing the file is mounted read-only.
[EFAULT] File or times points outside the process's allocated address space.
[EIO] An I/O error occurred while reading or writing the affected inode.
SEE ALSO stat(2).
4th Berkeley Distribution August 26, 1985 UTIME(2)
Check Out this Related Man Page
UTIME(3) BSD Library Functions Manual UTIME(3)NAME
utime -- set file times
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#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, time is assumed to be 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 super-user.
In either case, the inode-change-time of the file is set to the current time.
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and 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 times argument is NULL and the effective user ID of
the process does not match the owner of the file, and is not the super-user, and write access is denied.
[EFAULT] file or times 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 255 characters, or an entire path name exceeded 1023 characters.
[ENOENT] The named file does not exist.
[ENOTDIR] A component of the path prefix is not a directory.
[EPERM] The times argument is not NULL and the calling process's effective user ID does not match the owner of the file and is not
the super-user.
[EROFS] The file system containing the file is mounted read-only.
SEE ALSO stat(2), utimes(2)STANDARDS
The utime() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). It was however marked as legacy in the IEEE Std 1003.1-2008
(``POSIX.1'') revision of the standard.
HISTORY
A utime() function appeared in Version 7 AT&T UNIX.
BSD April 29, 2010 BSD