54 lines
869 B
C
54 lines
869 B
C
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/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s [n|y]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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struct stat sb;
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mode_t mode;
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ARGBEGIN {
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default:
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usage();
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} ARGEND;
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if (argc > 1)
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usage();
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if (isatty(STDIN_FILENO) == 0)
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eprintf("stdin: not a tty\n");
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if (fstat(STDIN_FILENO, &sb) < 0)
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eprintf("fstat stdin:");
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if (argc == 0) {
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puts(sb.st_mode & (S_IWGRP | S_IWOTH) ? "is y" : "is n");
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return EXIT_SUCCESS;
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}
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if (argv[0][0] == 'y')
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mode = sb.st_mode | S_IWGRP | S_IWOTH;
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else if (argv[0][0] == 'n')
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mode = sb.st_mode & ~(S_IWGRP | S_IWOTH);
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else
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usage();
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if (fchmod(STDIN_FILENO, mode) < 0)
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eprintf("fchmod stdin:");
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return EXIT_SUCCESS;
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}
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