platform_bionic/libc/bionic/sys_time.cpp
Elliott Hughes 449eff02d2 Add futimes, futimesat, and lutimes.
Spotted these while cleaning up <sys/cdefs.h> --- if we remove __USE_XOPEN2K8,
libchrome decides you "must" have futimes. Adding the missing functions (all
just alternative interfaces to utimensat(2) system call) lets us clean up
without breaking anything.

Change-Id: If44fab08ee3de0e31066d650d128a3c96323529b
2016-06-08 19:51:20 -07:00

65 lines
2.3 KiB
C++

/*
* Copyright (C) 2013 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/time.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "private/bionic_time_conversions.h"
static int futimesat(int fd, const char* path, const timeval tv[2], int flags) {
timespec ts[2];
if (tv && (!timespec_from_timeval(ts[0], tv[0]) || !timespec_from_timeval(ts[1], tv[1]))) {
errno = EINVAL;
return -1;
}
return utimensat(fd, path, tv ? ts : nullptr, flags);
}
int utimes(const char* path, const timeval tv[2]) {
return futimesat(AT_FDCWD, path, tv, 0);
}
int lutimes(const char* path, const timeval tv[2]) {
return futimesat(AT_FDCWD, path, tv, AT_SYMLINK_NOFOLLOW);
}
int futimesat(int fd, const char* path, const timeval tv[2]) {
return futimesat(fd, path, tv, 0);
}
int futimes(int fd, const timeval tv[2]) {
timespec ts[2];
if (tv && (!timespec_from_timeval(ts[0], tv[0]) || !timespec_from_timeval(ts[1], tv[1]))) {
errno = EINVAL;
return -1;
}
return futimens(fd, tv ? ts : nullptr);
}