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/*
* Copyright (C) 2009 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the GNU Public
* License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <blkid.h>
#include "nls.h"
#include "closestream.h"
#include "c.h"
#include "exitcodes.h"
/* Exit codes used by findfs. */
#define FINDFS_SUCCESS 0 /* no errors */
#define FINDFS_NOT_FOUND 1 /* label or uuid cannot be found */
#define FINDFS_USAGE_ERROR 2 /* user did something unexpected */
static void __attribute__((__noreturn__)) usage(int rc)
{
FILE *out = rc ? stderr : stdout;
fputs(USAGE_HEADER, out);
fprintf(out, _(" %s [options] {LABEL,UUID,PARTUUID,PARTLABEL}=<value>\n"),
program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Find a filesystem by label or UUID.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("findfs(8)"));
exit(rc);
}
int main(int argc, char **argv)
{
char *dev;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
if (argc != 2)
/* we return '2' for backward compatibility
* with version from e2fsprogs */
usage(FINDFS_USAGE_ERROR);
if (strcmp(argv[1], "-V") == 0 ||
strcmp(argv[1], "--version") == 0) {
printf(UTIL_LINUX_VERSION);
return FINDFS_SUCCESS;
} else if (strcmp(argv[1], "-h") == 0 ||
strcmp(argv[1], "--help") == 0) {
usage(FINDFS_SUCCESS);
} else if (argv[1][0] == '-')
usage(FINDFS_USAGE_ERROR);
dev = blkid_evaluate_tag(argv[1], NULL, NULL);
if (!dev)
errx(FINDFS_NOT_FOUND, _("unable to resolve '%s'"), argv[1]);
puts(dev);
return FINDFS_SUCCESS;
}
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