Manpage of FUTIMESAT
FUTIMESATSection: Linux Programmer's Manual (2)
NAMEfutimesat - change timestamps of a file relative to a directory file descriptor
#include <fcntl.h> /* Definition of AT_* constants */#include <sys/time.h>int futimesat(int dirfd, const char *pathname, const struct timeval times);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONThis system call is obsolete. Use utimensat(2) instead.
The futimesat() system call operates in exactly the same way as utimes(2), except for the differences described in this manual page.
If the pathname given in pathnameis relative, then it is interpreted relative to the directory referred to by the file descriptor dirfd(rather than relative to the current working directory of the calling process, as is done by utimes(2) for a relative pathname).
If pathnameis relative and dirfdis the special value AT_FDCWD, then pathnameis interpreted relative to the current working directory of the calling process (like utimes(2)).
RETURN VALUEOn success, futimesat() returns a 0. On error, -1 is returned and errnois set to indicate the error.
ERRORSThe same errors that occur for utimes(2) can also occur for futimesat(). The following additional errors can occur for futimesat():
- dirfdis not a valid file descriptor.
- pathnameis relative and dirfdis a file descriptor referring to a file other than a directory.
VERSIONSfutimesat() was added to Linux in kernel 2.6.16; library support was added to glibc in version 2.4.
CONFORMING TOThis system call is nonstandard. It was implemented from a specification that was proposed for POSIX.1, but that specification was replaced by the one for utimensat(2).
Glibc notesIf pathnameis NULL, then the glibc futimesat() wrapper function updates the times for the file referred to by dirfd.
SEE ALSOstat(2), utimensat(2), utimes(2), futimes(3), path_resolution(7)
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