/*
- * vol_id - udev callout to read filesystem label and uuid
+ * vol_id - read filesystem label and uuid
*
- * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2005-2006 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#include <unistd.h>
#include <string.h>
#include <ctype.h>
+#include <errno.h>
+#include <pwd.h>
+#include <grp.h>
#include <sys/ioctl.h>
-#include "../../udev_utils.h"
-#include "../../logging.h"
-#include "volume_id/volume_id.h"
+#include "../../udev.h"
+#include "lib/libvolume_id.h"
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
}
#endif
+static void vid_log(int priority, const char *file, int line, const char *format, ...)
+{
+#ifdef USE_LOG
+ char log_str[1024];
+ va_list args;
+
+ va_start(args, format);
+ vsnprintf(log_str, sizeof(log_str), format, args);
+ log_str[sizeof(log_str)-1] = '\0';
+ log_message(priority, "%s:%i %s", file, line, log_str);
+ va_end(args);
+#endif
+ return;
+}
+
static void set_str(char *to, const char *from, size_t count)
{
size_t i, j, len;
/* strip trailing whitespace */
len = strnlen(from, count);
- while (isspace(from[len-1]))
+ while (len && isspace(from[len-1]))
len--;
/* strip leading whitespace */
int main(int argc, char *argv[])
{
- const char help[] = "usage: vol_id [--export|-t|-l|-u] <device>\n"
- " --export\n"
- " -t filesystem type\n"
- " -l filesystem label\n"
- " -u filesystem uuid\n"
+ const char help[] = "Usage: vol_id [options] <device>\n"
+ " --export export key/value pairs\n"
+ " -t filesystem type\n"
+ " -l filesystem label\n"
+ " -u filesystem uuid\n"
+ " -L raw label\n"
+ " --skip-raid don't probe for raid\n"
+ " --probe-all find possibly conflicting signatures\n"
+ " --help\n"
"\n";
enum print_type {
PRINT_EXPORT,
PRINT_TYPE,
PRINT_LABEL,
PRINT_UUID,
+ PRINT_RAW_LABEL,
} print = PRINT_EXPORT;
struct volume_id *vid = NULL;
static char name[VOLUME_ID_LABEL_SIZE];
int i;
uint64_t size;
+ int skip_raid = 0;
+ int probe_all = 0;
const char *node = NULL;
+ struct passwd *pw;
+ int retval;
int rc = 0;
logging_init("vol_id");
+ /* hook in our debug into libvolume_id */
+ volume_id_log_fn = vid_log;
+
for (i = 1 ; i < argc; i++) {
char *arg = argv[i];
print = PRINT_LABEL;
} else if (strcmp(arg, "-u") == 0) {
print = PRINT_UUID;
+ } else if (strcmp(arg, "-L") == 0) {
+ print = PRINT_RAW_LABEL;
+ } else if (strcmp(arg, "--skip-raid") == 0) {
+ skip_raid = 1;
+ } else if (strcmp(arg, "--probe-all") == 0) {
+ probe_all = 1;
+ } else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
+ printf(help);
+ goto exit;
} else
node = arg;
}
if (ioctl(vid->fd, BLKGETSIZE64, &size) != 0)
size = 0;
+ dbg("BLKGETSIZE64=%llu", size);
- if (volume_id_probe_all(vid, 0, size) == 0)
- goto print;
+ /* try to drop all privileges before reading disk content */
+ pw = getpwnam ("nobody");
+ if (pw != NULL && pw->pw_uid > 0 && pw->pw_gid > 0) {
+ dbg("dropping privileges to %u:%u", (unsigned int)pw->pw_uid, (unsigned int)pw->pw_gid);
+ if (setgroups(0, NULL) != 0 ||
+ setgid(pw->pw_gid) != 0 ||
+ setuid(pw->pw_uid) != 0) {
+ fprintf(stderr, "error dropping privileges: %s\n", strerror(errno));
+ rc = 3;
+ goto exit;
+ }
+ }
+
+ if (probe_all) {
+ if (volume_id_probe_linux_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_intel_software_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_lsi_mega_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_via_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_silicon_medley_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_nvidia_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_promise_fasttrack_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_highpoint_45x_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_adaptec_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_jmicron_raid(vid, 0, size) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_vfat(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_linux_swap(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_luks(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_xfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_ext(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_reiserfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_jfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_udf(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_iso9660(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_hfs_hfsplus(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_ufs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_ntfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_cramfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_romfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_hpfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_sysv(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_minix(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_ocfs1(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_ocfs2(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_vxfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_squashfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_netware(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_gfs(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+ if (volume_id_probe_gfs2(vid, 0, 0) == 0)
+ printf("%s\n", vid->type);
+
+ goto exit;
+ }
- if (print != PRINT_EXPORT)
+ if (skip_raid)
+ retval = volume_id_probe_filesystem(vid, 0, size);
+ else
+ retval = volume_id_probe_all(vid, 0, size);
+ if (retval != 0) {
fprintf(stderr, "%s: unknown volume type\n", node);
- rc = 3;
- goto exit;
+ rc = 4;
+ goto exit;
+ }
-print:
set_str(name, vid->label, sizeof(vid->label));
+ replace_untrusted_chars(name);
switch (print) {
case PRINT_EXPORT:
printf("%s\n", vid->type);
break;
case PRINT_LABEL:
- if (name[0] == '\0' ||
- (vid->usage_id != VOLUME_ID_FILESYSTEM && vid->usage_id != VOLUME_ID_DISKLABEL)) {
+ if (name[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
rc = 3;
goto exit;
}
printf("%s\n", name);
break;
case PRINT_UUID:
- if (vid->uuid[0] == '\0' || vid->usage_id != VOLUME_ID_FILESYSTEM) {
+ if (vid->uuid[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
rc = 4;
goto exit;
}
printf("%s\n", vid->uuid);
break;
+ case PRINT_RAW_LABEL:
+ if (vid->label[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
+ rc = 3;
+ goto exit;
+ }
+ printf("%s\n", vid->label);
+ break;
}
exit:
~ianmdlvl / elogind.git / blobdiff