#include <pwd.h>
#include <grp.h>
#include <getopt.h>
+#include <fcntl.h>
#include <sys/ioctl.h>
#include "../../udev.h"
to[j] = '\0';
}
+static int all_probers(volume_id_probe_fn_t probe_fn,
+ struct volume_id *id, uint64_t off, uint64_t size,
+ void *data)
+{
+ const char *type;
+
+ if (probe_fn(id, off, size) == 0)
+ if (volume_id_get_type(id, &type))
+ printf("%s\n", type);
+
+ return 0;
+}
+
int main(int argc, char *argv[])
{
static const struct option options[] = {
{ "export", 0, NULL, 'x' },
{ "skip-raid", 0, NULL, 's' },
{ "probe-all", 0, NULL, 'a' },
+ { "offset", 1, NULL, 'o' },
{ "help", 0, NULL, 'h' },
{}
};
} print = PRINT_EXPORT;
struct volume_id *vid = NULL;
- static char name[VOLUME_ID_LABEL_SIZE];
+ char label_safe[256];
+ char label_enc[256];
+ char uuid_enc[256];
uint64_t size;
int skip_raid = 0;
int probe_all = 0;
+ uint64_t offset = 0;
const char *node;
- struct passwd *pw;
+ int fd;
+ const char *label, *uuid, *type, *type_version, *usage;
int retval;
int rc = 0;
while (1) {
int option;
- option = getopt_long(argc, argv, "lLutxsah", options, NULL);
+ option = getopt_long(argc, argv, "lLutxsaoh", options, NULL);
if (option == -1)
break;
case 'a':
probe_all = 1;
break;
+ case 'o':
+ offset = strtoull(optarg, NULL, 0);
+ break;
case 'h':
printf("Usage: vol_id [options] <device>\n"
" --export export key/value pairs\n"
" --uuid filesystem uuid\n"
" --skip-raid don't probe for raid\n"
" --probe-all find possibly conflicting signatures\n"
+ " --offset skip given number of bytes of input\n"
" --help\n\n");
goto exit;
default:
goto exit;
}
- vid = volume_id_open_node(node);
+ fd = open(node, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "%s: error opening volume\n", node);
+ rc = 2;
+ goto exit;
+ }
+
+ vid = volume_id_open_fd(fd);
if (vid == NULL) {
- fprintf(stderr, "%s: error open volume\n", node);
rc = 2;
goto exit;
}
- if (ioctl(vid->fd, BLKGETSIZE64, &size) != 0)
+ if (ioctl(fd, BLKGETSIZE64, &size) != 0)
size = 0;
dbg("BLKGETSIZE64=%llu", (unsigned long long)size);
/* 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 (getuid() == 0) {
+ struct passwd *pw;
+
+ pw = getpwnam("nobody");
+ if (pw != NULL && pw->pw_uid > 0 && pw->pw_gid > 0) {
+ if (setgroups(0, NULL) != 0 ||
+ setgid(pw->pw_gid) != 0 ||
+ setuid(pw->pw_uid) != 0)
+ info("unable to drop privileges: %s\n", strerror(errno));
}
}
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);
-
+ volume_id_all_probers(all_probers, vid, offset, size, NULL);
goto exit;
}
if (skip_raid)
- retval = volume_id_probe_filesystem(vid, 0, size);
+ retval = volume_id_probe_filesystem(vid, offset, size);
else
- retval = volume_id_probe_all(vid, 0, size);
+ retval = volume_id_probe_all(vid, offset, size);
if (retval != 0) {
fprintf(stderr, "%s: unknown volume type\n", node);
rc = 4;
goto exit;
}
- set_str(name, vid->label, sizeof(vid->label));
- replace_untrusted_chars(name);
+ if (!volume_id_get_label(vid, &label) ||
+ !volume_id_get_usage(vid, &usage) ||
+ !volume_id_get_type(vid, &type) ||
+ !volume_id_get_type_version(vid, &type_version) ||
+ !volume_id_get_uuid(vid, &uuid)) {
+ rc = 4;
+ goto exit;
+ }
+
+ set_str(label_safe, label, sizeof(label_safe));
+ replace_chars(label_safe, ALLOWED_CHARS_INPUT);
+
+ volume_id_encode_string(label, label_enc, sizeof(label_enc));
+ volume_id_encode_string(uuid, uuid_enc, sizeof(uuid_enc));
switch (print) {
case PRINT_EXPORT:
- printf("ID_FS_USAGE=%s\n", vid->usage);
- printf("ID_FS_TYPE=%s\n", vid->type);
- printf("ID_FS_VERSION=%s\n", vid->type_version);
- printf("ID_FS_UUID=%s\n", vid->uuid);
- printf("ID_FS_LABEL=%s\n", vid->label);
- printf("ID_FS_LABEL_SAFE=%s\n", name);
+ printf("ID_FS_USAGE=%s\n", usage);
+ printf("ID_FS_TYPE=%s\n", type);
+ printf("ID_FS_VERSION=%s\n", type_version);
+ printf("ID_FS_UUID=%s\n", uuid);
+ printf("ID_FS_UUID_ENC=%s\n", uuid_enc);
+ printf("ID_FS_LABEL=%s\n", label);
+ printf("ID_FS_LABEL_ENC=%s\n", label_enc);
+ printf("ID_FS_LABEL_SAFE=%s\n", label_safe);
break;
case PRINT_TYPE:
- printf("%s\n", vid->type);
+ printf("%s\n", type);
break;
case PRINT_LABEL:
- if (name[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
+ if (label_safe[0] == '\0' || strcmp(usage, "raid") == 0) {
rc = 3;
goto exit;
}
- printf("%s\n", name);
+ printf("%s\n", label_safe);
break;
case PRINT_UUID:
- if (vid->uuid[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
+ if (uuid_enc[0] == '\0' || strcmp(usage, "raid") == 0) {
rc = 4;
goto exit;
}
- printf("%s\n", vid->uuid);
+ printf("%s\n", uuid_enc);
break;
case PRINT_LABEL_RAW:
- if (vid->label[0] == '\0' || vid->usage_id == VOLUME_ID_RAID) {
+ if (label[0] == '\0' || strcmp(usage, "raid") == 0) {
rc = 3;
goto exit;
}
- printf("%s\n", vid->label);
+ printf("%s\n", label);
break;
}
~ianmdlvl / elogind.git / blobdiff