Name
futimes, lutimes - change file timestampsLibrary
Standard C library ( libc ", " -lc )Synopsis
#include <sys/time.h> int futimes(int " fd ", const struct timeval tv [2]);
int lutimes(const char *" filename ", const struct timeval tv [2]);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
futimes() lutimes()
Since glibc 2.19:
_DEFAULT_SOURCE
glibc 2.19 and earlier:
_BSD_SOURCE
Description
futimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that the file whose timestamps are to be changed is specified via a file descriptor,fd, rather than via a pathname. lutimes() changes the access and modification times of a file in the same way as utimes(2), with the difference that if filename refers to a symbolic link, then the link is not dereferenced: instead, the timestamps of the symbolic link are changed.
Return Value
On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error.Errors
Errors are as for utimes(2), with the following additions for futimes()EBADF fd is not a valid file descriptor.
ENOSYS The /proc filesystem could not be accessed.
The following additional error may occur for lutimes()
ENOSYS The kernel does not support this call; Linux 2.6.22 or later is required.
Attributes
For an explanation of the terms used in this section, see attributes(7).| Interface | Attribute | Value |
| T} | Thread safety | MT-Safe |
Standards
Linux, BSD.History
futimes() glibc 2.3.
lutimes() glibc 2.6.