mirror of
https://github.com/jart/cosmopolitan.git
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0d748ad58e
This change fixes Cosmopolitan so it has fewer opinions about compiler warnings. The whole repository had to be cleaned up to be buildable in -Werror -Wall mode. This lets us benefit from things like strict const checking. Some actual bugs might have been caught too.
81 lines
3 KiB
C
81 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/errno.h"
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#include "libc/fmt/conv.h"
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#include "libc/fmt/magnumstrs.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "third_party/getopt/getopt.internal.h"
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#define USAGE \
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" OCTAL DST...\n\
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\n\
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SYNOPSIS\n\
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\n\
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Changes File Mode Bits\n\
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\n\
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FLAGS\n\
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\n\
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-h help\n\
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\n"
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const char *prog;
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static wontreturn void PrintUsage(int fd, int rc) {
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tinyprint(fd, "USAGE\n\n ", prog, USAGE, NULL);
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exit(rc);
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}
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static void GetOpts(int argc, char *argv[]) {
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int opt;
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while ((opt = getopt(argc, argv, "h")) != -1) {
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switch (opt) {
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case 'h':
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PrintUsage(1, 0);
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default:
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PrintUsage(2, 1);
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}
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}
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}
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int main(int argc, char *argv[]) {
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int i, mode;
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char *endptr;
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prog = argv[0];
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if (!prog) prog = "chmod";
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GetOpts(argc, argv);
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if (argc - optind < 2) {
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tinyprint(2, prog, ": missing operand\n", NULL);
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exit(1);
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}
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mode = strtol(argv[optind], &endptr, 8) & 07777;
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if (*endptr) {
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tinyprint(2, prog, ": invalid mode octal\n", NULL);
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exit(1);
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}
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for (i = optind + 1; i < argc; ++i) {
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if (chmod(argv[i], mode) == -1) {
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perror(argv[i]);
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exit(1);
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}
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}
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return 0;
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}
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