mirror of git://git.suckless.org/ubase
56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.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 [-c] -s size file...\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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int cflag = 0, sflag = 0;
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int fd, i, ret = EXIT_SUCCESS;
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long size = 0;
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ARGBEGIN {
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case 's':
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sflag = 1;
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size = estrtol(EARGF(usage()), 10);
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break;
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case 'c':
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cflag = 1;
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break;
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default:
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usage();
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} ARGEND;
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if (argc < 1 || sflag == 0)
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usage();
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for (i = 0; i < argc; i++) {
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fd = open(argv[i], O_WRONLY | (cflag ? 0 : O_CREAT), 0644);
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if (fd < 0) {
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fprintf(stderr, "open: cannot open `%s' for writing: %s\n",
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argv[i], strerror(errno));
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ret = EXIT_FAILURE;
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continue;
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}
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if (ftruncate(fd, size) < 0) {
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fprintf(stderr, "truncate: cannot open `%s' for writing: %s\n",
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argv[i], strerror(errno));
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ret = EXIT_FAILURE;
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}
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close(fd);
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}
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return ret;
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}
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