mirror of
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80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <utime.h>
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static bool file_exists(const char* path)
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{
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struct stat st;
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int rc = stat(path, &st);
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if (rc < 0) {
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if (errno == ENOENT)
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return false;
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}
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if (rc == 0) {
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return true;
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}
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perror("stat");
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exit(1);
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}
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int main(int argc, char** argv)
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{
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if (pledge("stdio rpath cpath fattr", nullptr)) {
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perror("pledge");
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return 1;
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}
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if (argc != 2) {
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fprintf(stderr, "usage: touch <path>\n");
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return 1;
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}
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if (file_exists(argv[1])) {
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int rc = utime(argv[1], nullptr);
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if (rc < 0)
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perror("utime");
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} else {
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int fd = open(argv[1], O_CREAT, 0100644);
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if (fd < 0) {
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perror("open");
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return 1;
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}
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int rc = close(fd);
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if (rc < 0) {
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perror("close");
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return 1;
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}
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}
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return 0;
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}
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