4832865490
This option is present on most uuidgen(1) implementations even though normal file redirection can be used to achieve the same. Submitted by: Hiten Pandya <hiten@unixdaemons.com>
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/*
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* Copyright (c) 2002 Marcel Moolenaar
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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
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <err.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 <uuid.h>
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static void
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usage(void)
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{
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(void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n");
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exit(1);
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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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FILE *fp;
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uuid_t *store, *uuid;
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char *p;
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int ch, count, i, iterate;
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count = -1; /* no count yet */
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fp = stdout; /* default output file */
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iterate = 0; /* not one at a time */
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while ((ch = getopt(argc, argv, "1n:o:")) != -1)
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switch (ch) {
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case '1':
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iterate = 1;
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break;
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case 'n':
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if (count > 0)
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usage();
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count = strtol(optarg, &p, 10);
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if (*p != 0 || count < 1)
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usage();
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break;
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case 'o':
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if (fp != stdout)
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errx(1, "multiple output files not allowed");
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fp = fopen(optarg, "w");
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if (fp == NULL)
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err(1, "fopen");
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break;
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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if (argc)
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usage();
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if (count == -1)
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count = 1;
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store = (uuid_t*)malloc(sizeof(uuid_t) * count);
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if (store == NULL)
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err(1, "malloc()");
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if (!iterate) {
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/* Get them all in a single batch */
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if (uuidgen(store, count) != 0)
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err(1, "uuidgen()");
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} else {
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uuid = store;
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for (i = 0; i < count; i++) {
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if (uuidgen(uuid++, 1) != 0)
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err(1, "uuidgen()");
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}
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}
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uuid = store;
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while (count--) {
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uuid_to_string(uuid++, &p, NULL);
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fprintf(fp, "%s\n", p);
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free(p);
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}
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free(store);
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if (fp != stdout)
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fclose(fp);
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return (0);
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}
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