UTIME(2)

NAME

utime − set file access and modification times

SYNOPSIS

#include <sys/types.h>
#include <unistd.h>
int utime (path, times)
char ∗path;
struct utimbuf ∗times;

HP-UX COMPATIBILITY

Level: HP-UX/RUN ONLY

Origin: System V

DESCRIPTION

Path points to a path name naming a file. Utime sets the access and modification times of the named file.

If times 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 or have write permission to use utime in this manner.

If times is not NULL, times is interpreted as a pointer to a utimbuf structure and the access and modification times are set to the values contained in the designated structure. Only the owner of the file or the super-user may use utime this way.

The times in the following structure, found in <unistd.h>, are measured in seconds since 00:00:00 GMT, Jan. 1, 1970.

struct utimbuf {
time_tactime;/∗ access time ∗/
time_tmodtime;/∗ modification time ∗/
};

Utime will fail if one or more of the following are true:

[ENOENT] The named file does not exist.

[ENOTDIR] A component of the path prefix is not a directory.

[EACCES] Search permission is denied by a component of the path prefix.

[EPERM] The effective user ID is not super-user and not the owner of the file and times is not NULL.

[EACCES] The effective user ID is not super-user and not the owner of the file and times is NULL and write access is denied.

[EROFS] The file system containing the file is mounted read-only.

[EFAULT] Times is not NULL and points outside the process’s allocated address space.

[EFAULT] Path points outside the process’s allocated address space.

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.

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