UTIMES(2) | System Calls Manual | UTIMES(2) |
futimes
, utimes
— set file access and modification times
Standard C Library (libc, -lc)
#include
<sys/time.h>
int
futimes
(int fildes,
const struct timeval times[2]);
int
utimes
(const char *path,
const struct timeval times[2]);
The access and modification times of the file named by path or referenced by fildes are changed as specified by the argument times.
If times is NULL
,
the access and modification times are set to the current time. The caller
must be the owner of the file, have permission to write the file, or be the
super-user.
If times is
non-NULL
, it is assumed to point to an array of two
timeval structures. The access time is set to the value of the first
element, and the modification time is set to the value of the second
element. The caller 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.
In case of a symbolic link
utimes
()
function will set file access and modification times to the file the link
references. The lutimes(3) function
will set the access and modification times to the symbolic link file.
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.
The utimes
() system call will fail if:
EACCES
]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
]EIO
]ELOOP
]ENAMETOOLONG
]NAME_MAX
characters, or an entire path name exceeded
PATH_MAX
characters.ENOENT
]ENOTDIR
]EPERM
]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 futimes
() system call will fail
if:
EBADF
]All of the functions will fail if:
EACCES
]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
]EIO
]EPERM
]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 utimes
() function call appeared in
4.2BSD. The futimes
()
function call first appeared in FreeBSD 3.0.
June 4, 1993 | macOS 14.6 |