utimes(2)
Name
utimes − set file times
Syntax
#include <sys/time.h>
#include <utime.h>
utimes(file, tvp)
char *file;
struct timeval *tvp[2];
Description
The utimes call uses the accessed and updated times from the tvp vector to set the corresponding recorded times for file.
If tvp is NULL, the access and modification times of the file are set to the current time. A process must be the owner of the file, the superuser, or have write permission to use utimes in this manner.
If tvp is not NULL, the caller must be the owner of the file or the superuser.
The inode-changed time of the file is set to the current time.
Return Value
Upon successful completion, a value of zero (0) is returned. Otherwise, a value of −1 is returned, and errno is set to indicate the error.
Diagnostics
The utimes system call fails if one or more of the following are true:
[EACCES] Search permission is denied for a component of the path prefix.
[EACCES] The tvp argument is NULL and the caller is not the owner of the file; write access is denied.
[EFAULT] The file or tvp points outside the process’s allocated address space.
[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 exceeds 255 characters, or an entire pathname exceeds 1023 characters.
[ENOENT] The named file does not exist.
[ENOTDIR] A component of the path prefix is not a directory.
[EPERM] The tvp argument is not NULL, the caller has write access, the caller is not the owner of the file, and the caller is not the superuser.
[EROFS] The file system containing the file is mounted read-only.
[ETIMEDOUT] A connect request or remote file operation failed, because the connected party did not respond after a period of time determined by the communications protocol.