56 lines
987 B
C
56 lines
987 B
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 <limits.h>
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#include <stdint.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 [-o num] -l num 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 fd, ret = 0;
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off_t size = 0, offset = 0;
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ARGBEGIN {
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case 'l':
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size = estrtonum(EARGF(usage()), 1, MIN(LLONG_MAX, SIZE_MAX));
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break;
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case 'o':
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offset = estrtonum(EARGF(usage()), 0, MIN(LLONG_MAX, SIZE_MAX));
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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 || !size)
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usage();
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for (; *argv; argc--, argv++) {
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if ((fd = open(*argv, O_RDWR | O_CREAT, 0644)) < 0) {
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weprintf("open %s:", *argv);
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ret = 1;
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} else if (posix_fallocate(fd, offset, size) < 0) {
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weprintf("posix_fallocate %s:", *argv);
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ret = 1;
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}
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if (fd >= 0 && close(fd) < 0) {
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weprintf("close %s:", *argv);
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ret = 1;
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}
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}
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return ret;
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}
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