utime(3) [netbsd 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
Check Out this Related Man Page
utime(2) System Calls utime(2) NAME
utime - set file access and modification times SYNOPSIS
#include <sys/types.h> #include <utime.h> int utime(const char *path, const struct utimbuf *times); DESCRIPTION
The utime() function sets the access and modification times of the file pointed to by path, and causes the time of the last file status change (st_ctime) to be updated. 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 (defined in <utime.h>) and the access and modification times are set to the values contained in the designated structure. Only the owner of the file or a process that has the {PRIV_FILE_OWNER} privi- lege asserted in its effective set can use utime() in this manner. The utimbuf structure contains the following members: time_t actime; /* access time */ time_t modtime; /* modification time */ The times contained in the members of the utimbuf structure are measured in seconds since 00:00:00 UTC, January 1, 1970. RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The utime() function will fail if: EACCES Search permission is denied by a component of the path prefix. EACCES The process does not have appropriate privileges and is not the owner of the file, write permission is denied for the file, and times is NULL. EFAULT The path argument points to an illegal address. EINTR A signal was caught during the execution of the utime() function. EIO An I/O error occurred while reading from or writing to the file system. ELOOP Too many symbolic links were encountered in translating path. ENAMETOOLONG The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect. ENOENT The named file does not exist or is a null pathname. ENOLINK The path argument points to a remote machine and the link to that machine is no longer active. ENOTDIR A component of the path prefix is not a directory. EPERM The effective user of the calling process is not the owner of the file, {PRIV_FILE_OWNER} is not asserted in the effective set of the calling process, and times is not NULL. EROFS The file system containing the file is mounted read-only. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
stat(2), utimes(2), attributes(5), privileges(5), standards(5) SunOS 5.11 19 Apr 2004 utime(2)