FUTIMESATSection: Linux Programmer's Manual (2)
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NAMEfutimesat - change timestamps of a file relative to a directory file descriptor
#define _ATFILE_SOURCE #include <fcntl.h> int futimesat(int dirfd, const char *pathname, const struct timeval times);
DESCRIPTIONThe 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 pathname is 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 pathname is relative and dirfd is the special value AT_FDCWD, then pathname is 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 errno is 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():
- dirfd is not a valid file descriptor.
- pathname is relative and dirfd is a file descriptor referring to a file other than a directory.
VERSIONSfutimesat() was added to Linux in kernel 2.6.16.
CONFORMING TOThis system call is non-standard but is proposed for inclusion in a future revision of POSIX.1. A similar system call exists on Solaris.
Glibc NotesIf pathname is NULL, then the glibc futimesat() wrapper function updates the times for the file referred to by dirfd.
SEE ALSOstat(2), utimes(2), futimes(3) path_resolution(7)