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blkid: introduce symbolic names for different blkid exit codes 

Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
This commit is contained in:
Petr Uzel 2012-05-16 10:38:32 +02:00 committed by Karel Zak
parent a922091df8
commit 1578ddd658
1 changed files with 18 additions and 14 deletions
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32
misc-utils/blkid.c
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@ -34,11 +34,15 @@ extern int optind;
#define LOWPROBE_TOPOLOGY (1 << 1)
#define LOWPROBE_SUPERBLOCKS (1 << 2)
#define BLKID_EXIT_NOTFOUND 2 /* token or device not found */
#define BLKID_EXIT_OTHER 4 /* bad usage or other error */
#define BLKID_EXIT_AMBIVAL 8 /* ambivalent low-level probing detected */
#include <blkid.h>
#include "ismounted.h"
#define STRTOXX_EXIT_CODE 4 /* strtoxx_or_err() */
#define STRTOXX_EXIT_CODE BLKID_EXIT_OTHER /* strtoxx_or_err() */
#include "strutils.h"
#include "closestream.h"
#include "ttyutils.h"
@ -484,7 +488,7 @@ static int lowprobe_device(blkid_probe pr, const char *devname,
fd = open(devname, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "error: %s: %m\n", devname);
return 2;
return BLKID_EXIT_NOTFOUND;
}
if (blkid_probe_set_device(pr, fd, offset, size))
goto done;
@ -551,9 +555,9 @@ done:
close(fd);
if (rc == -2)
return 8; /* ambivalent probing result */
return BLKID_EXIT_AMBIVAL; /* ambivalent probing result */
if (!nvals)
return 2; /* nothing detected */
return BLKID_EXIT_NOTFOUND; /* nothing detected */
return 0; /* success */
}
@ -591,7 +595,7 @@ err:
*flag = 0;
fprintf(stderr, "unknown kerword in -u <list> argument: '%s'\n",
word ? word : list);
exit(4);
exit(BLKID_EXIT_OTHER);
}
/* converts comma separated list to types[] */
@ -633,7 +637,7 @@ err_mem:
err:
*flag = 0;
free(res);
exit(4);
exit(BLKID_EXIT_OTHER);
}
static void free_types_list(char *list[])
@ -659,7 +663,7 @@ int main(int argc, char **argv)
int fltr_flag = BLKID_FLTR_ONLYIN;
unsigned int numdev = 0, numtag = 0;
int version = 0;
int err = 4;
int err = BLKID_EXIT_OTHER;
unsigned int i;
int output_format = 0;
int lookup = 0, gc = 0, lowprobe = 0, eval = 0;
@ -688,14 +692,14 @@ int main(int argc, char **argv)
case 'n':
if (fltr_usage) {
fprintf(stderr, "error: -u and -n options are mutually exclusive\n");
exit(4);
exit(BLKID_EXIT_OTHER);
}
fltr_type = list_to_types(optarg, &fltr_flag);
break;
case 'u':
if (fltr_type) {
fprintf(stderr, "error: -u and -n options are mutually exclusive\n");
exit(4);
exit(BLKID_EXIT_OTHER);
}
fltr_usage = list_to_usage(optarg, &fltr_flag);
break;
@ -739,7 +743,7 @@ int main(int argc, char **argv)
fprintf(stderr, "Invalid output format %s. "
"Choose from value,\n\t"
"device, list, udev or full\n", optarg);
exit(4);
exit(BLKID_EXIT_OTHER);
}
break;
case 'O':
@ -818,13 +822,13 @@ int main(int argc, char **argv)
err = 0;
goto exit;
}
err = 2;
err = BLKID_EXIT_NOTFOUND;
if (eval == 0 && (output_format & OUTPUT_PRETTY_LIST)) {
if (lowprobe) {
fprintf(stderr, "The low-level probing mode does not "
"support 'list' output format\n");
exit(4);
exit(BLKID_EXIT_OTHER);
}
pretty_print_dev(NULL);
}
@ -838,7 +842,7 @@ int main(int argc, char **argv)
if (!numdev) {
fprintf(stderr, "The low-level probing mode "
"requires a device\n");
exit(4);
exit(BLKID_EXIT_OTHER);
}
/* automatically enable 'export' format for I/O Limits */
@ -888,7 +892,7 @@ int main(int argc, char **argv)
if (!search_type) {
fprintf(stderr, "The lookup option requires a "
"search type specified using -t\n");
exit(4);
exit(BLKID_EXIT_OTHER);
}
/* Load any additional devices not in the cache */
for (i = 0; i < numdev; i++)