2 * Copyright (c) 2016 Netflix, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <efivar-dp.h>
40 /* options descriptor */
41 static struct option longopts[] = {
42 { "format", no_argument, NULL, 'f' },
43 { "parse", no_argument, NULL, 'p' },
48 static int flag_format, flag_parse;
54 errx(1, "efidp [-fp]");
58 read_file(int fd, void **rv)
69 red = read(fd, retval + off, len - off);
71 if (red < (ssize_t)(len - off))
74 retval = reallocf(retval, len);
84 parse_args(int argc, char **argv)
88 while ((ch = getopt_long(argc, argv, "fp",
89 longopts, NULL)) != -1) {
107 if (flag_parse + flag_format != 1) {
108 warnx("Can only use one of -p (--parse), "
109 "and -f (--format)");
115 main(int argc, char **argv)
120 parse_args(argc, argv);
121 len = read_file(STDIN_FILENO, &data);
128 fmtlen = efidp_format_device_path(buffer, sizeof(buffer),
129 (const_efidp)data, len);
131 printf("%s\n", buffer);
133 } else if (flag_parse) {
139 str = realloc(data, len + 1);
140 if (str == NULL || dp == NULL)
141 errx(1, "Can't allocate memory.");
143 dplen = efidp_parse_device_path(str, dp, 8192);
145 errx(1, "Can't parse %s", str);
146 write(STDOUT_FILENO, dp, dplen);