int main(int argc, char *argv[])
{
int rc;
char *devname;
blkid_probe pr;
blkid_topology tp;
if (argc < 2) {
fprintf(stderr, "usage: %s <device> "
"-- checks based on libblkid for mkfs-like programs.\n",
program_invocation_short_name);
return EXIT_FAILURE;
}
devname = argv[1];
pr = blkid_new_probe_from_filename(devname);
if (!pr)
err(EXIT_FAILURE, "%s: faild to create a new libblkid probe",
devname);
/*
* check Filesystems / Partitions overwrite
*/
/* enable partitions probing (superblocks are enabled by default) */
blkid_probe_enable_partitions(pr, TRUE);
rc = blkid_do_fullprobe(pr);
if (rc == -1)
errx(EXIT_FAILURE, "%s: blkid_do_fullprobe() failed", devname);
else if (rc == 0) {
const char *type;
if (!blkid_probe_lookup_value(pr, "TYPE", &type, NULL))
errx(EXIT_FAILURE, "%s: appears to contain an existing "
"%s superblock", devname, type);
if (!blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL))
errx(EXIT_FAILURE, "%s: appears to contain an partition "
"table (%s)", devname, type);
}
/*
* get topology details
*/
tp = blkid_probe_get_topology(pr);
if (!tp)
errx(EXIT_FAILURE, "%s: failed to read topology", devname);
/* ... your mkfs.<type> code or so ...
off = blkid_topology_get_alignment_offset(tp);
*/
blkid_free_probe(pr);
return EXIT_SUCCESS;
}
gboolean type_by_device(const gchar* device, gchar** type) {
gboolean result = false;
const char *devtype = NULL;
blkid_probe probe = NULL;
*type = NULL;
probe = blkid_new_probe_from_filename(device);
if(!probe) {
LOG(MOD "Probe from filename failed!\n");
return false;
}
if (blkid_probe_enable_partitions(probe, true) != 0) {
LOG(MOD "Enable partitions failed!\n");
goto fail;
}
if (blkid_do_fullprobe(probe) != 0) {
LOG(MOD "Fullprobe failed!\n");
goto fail;
}
if (blkid_probe_lookup_value(probe, "TYPE", &devtype, NULL) != 0) {
LOG(MOD "Lookup value failed!\n");
goto fail;
}
*type = g_strdup(devtype);
result = true;
fail:
blkid_free_probe(probe);
return result;
}
static int check_partition_table(const char *device)
{
blkid_probe pr;
const char *value;
int ret;
pr = blkid_new_probe_from_filename(device);
if (!pr)
return -1;
ret = blkid_probe_enable_partitions(pr, 1);
if (ret < 0)
goto errout;
ret = blkid_probe_enable_superblocks(pr, 0);
if (ret < 0)
goto errout;
ret = blkid_do_fullprobe(pr);
if (ret < 0)
goto errout;
ret = blkid_probe_lookup_value(pr, "PTTYPE", &value, NULL);
if (ret == 0)
fprintf(stderr, _("Found a %s partition table in %s\n"),
value, device);
else
ret = 1;
errout:
blkid_free_probe(pr);
return ret;
}
/**
* mnt_get_fstype:
* @devname: device name
* @ambi: returns TRUE if probing result is ambivalent (optional argument)
* @cache: cache for results or NULL
*
* Returns: filesystem type or NULL in case of error. The result has to be
* deallocated by free() if @cache is NULL.
*/
char *mnt_get_fstype(const char *devname, int *ambi, struct libmnt_cache *cache)
{
blkid_probe pr;
const char *data;
char *type = NULL;
int rc;
DBG(CACHE, mnt_debug_h(cache, "get %s FS type", devname));
if (cache)
return mnt_cache_find_tag_value(cache, devname, "TYPE");
/*
* no cache, probe directly
*/
pr = blkid_new_probe_from_filename(devname);
if (!pr)
return NULL;
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_TYPE);
rc = blkid_do_safeprobe(pr);
if (!rc && !blkid_probe_lookup_value(pr, "TYPE", &data, NULL))
type = strdup(data);
if (ambi)
*ambi = rc == -2 ? TRUE : FALSE;
blkid_free_probe(pr);
return type;
}
static blkid_probe
new_probe(const char *devname, int mode)
{
blkid_probe pr;
if (!devname)
return NULL;
if (mode) {
int fd = open(devname, mode);
if (fd < 0)
goto error;
pr = blkid_new_probe();
if (pr && blkid_probe_set_device(pr, fd, 0, 0))
goto error;
} else
pr = blkid_new_probe_from_filename(devname);
if (!pr)
goto error;
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC |
BLKID_SUBLKS_TYPE | BLKID_SUBLKS_USAGE |
BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID);
blkid_probe_enable_partitions(pr, 1);
blkid_probe_set_partitions_flags(pr, BLKID_PARTS_MAGIC);
return pr;
error:
err(EXIT_FAILURE, _("error: %s: probing initialization failed"), devname);
return NULL;
}
/*
* returns (in @res) blkid prober, the @cache argument is optional
*/
static int cache_get_probe(struct libmnt_cache *cache, const char *devname,
blkid_probe *res)
{
blkid_probe pr = cache ? cache->pr : NULL;
assert(devname);
if (cache && cache->pr && (!cache->filename ||
strcmp(devname, cache->filename))) {
blkid_free_probe(cache->pr);
free(cache->filename);
cache->filename = NULL;
pr = cache->pr = NULL;
}
if (!pr) {
pr = blkid_new_probe_from_filename(devname);
if (!pr)
return -1;
if (cache) {
cache->pr = pr;
cache->filename = strdup(devname);
if (!cache->filename)
return -ENOMEM;
}
}
if (res)
*res = pr;
return 0;
}
static int _wipe_known_signatures_with_blkid(struct device *dev, const char *name,
uint32_t types_to_exclude,
uint32_t types_no_prompt,
int yes, force_t force, int *wiped)
{
blkid_probe probe = NULL;
int found = 0, left = 0, wiped_tmp;
int r_wipe;
int r = 0;
if (!wiped)
wiped = &wiped_tmp;
*wiped = 0;
/* TODO: Should we check for valid dev - _dev_is_valid(dev)? */
if (!(probe = blkid_new_probe_from_filename(dev_name(dev)))) {
log_error("Failed to create a new blkid probe for device %s.", dev_name(dev));
goto out;
}
blkid_probe_enable_partitions(probe, 1);
blkid_probe_set_partitions_flags(probe, BLKID_PARTS_MAGIC);
blkid_probe_enable_superblocks(probe, 1);
blkid_probe_set_superblocks_flags(probe, BLKID_SUBLKS_LABEL |
BLKID_SUBLKS_UUID |
BLKID_SUBLKS_TYPE |
BLKID_SUBLKS_USAGE |
BLKID_SUBLKS_VERSION |
BLKID_SUBLKS_MAGIC |
BLKID_SUBLKS_BADCSUM);
while (!blkid_do_probe(probe)) {
if ((r_wipe = _blkid_wipe(probe, dev, name, types_to_exclude, types_no_prompt, yes, force)) == 1) {
(*wiped)++;
if (blkid_probe_step_back(probe)) {
log_error("Failed to step back blkid probe to check just wiped signature.");
goto out;
}
}
/* do not count excluded types */
if (r_wipe != 2)
found++;
}
if (!found)
r = 1;
left = found - *wiped;
if (!left)
r = 1;
else
log_warn("%d existing signature%s left on the device.",
left, left > 1 ? "s" : "");
out:
if (probe)
blkid_free_probe(probe);
return r;
}
static int probe_and_add_mount(
const char *id,
const char *what,
const char *where,
bool rw,
const char *description,
const char *post) {
_cleanup_blkid_free_probe_ blkid_probe b = NULL;
const char *fstype;
int r;
assert(id);
assert(what);
assert(where);
assert(description);
if (path_is_mount_point(where, true) <= 0 &&
dir_is_empty(where) <= 0) {
log_debug("%s already populated, ignoring.", where);
return 0;
}
/* Let's check the partition type here, so that we know
* whether to do LUKS magic. */
errno = 0;
b = blkid_new_probe_from_filename(what);
if (!b) {
if (errno == 0)
return log_oom();
log_error_errno(errno, "Failed to allocate prober: %m");
return -errno;
}
blkid_probe_enable_superblocks(b, 1);
blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == -2 || r == 1) /* no result or uncertain */
return 0;
else if (r != 0) {
if (errno == 0)
errno = EIO;
log_error_errno(errno, "Failed to probe %s: %m", what);
return -errno;
}
blkid_probe_lookup_value(b, "TYPE", &fstype, NULL);
return add_mount(
id,
what,
where,
fstype,
rw,
description,
post);
}
static char * _get_uuid_from_device( const char * device )
{
char * r = NULL ;
const char * e = NULL ;
blkid_probe blkid = blkid_new_probe_from_filename( device ) ;
if( blkid != NULL ){
blkid_do_probe( blkid ) ;
blkid_probe_lookup_value( blkid,"UUID",&e,NULL ) ;
r = StringCopy_2( e ) ;
blkid_free_probe( blkid ) ;
}
return r ;
}
string_t zuluCryptGetFileSystemFromDevice( const char * device )
{
string_t st = StringVoid ;
const char * cf = NULL ;
blkid_probe blkid = blkid_new_probe_from_filename( device ) ;
if( blkid != NULL ){
blkid_do_probe( blkid ) ;
blkid_probe_lookup_value( blkid,"TYPE",&cf,NULL ) ;
st = String( cf ) ;
blkid_free_probe( blkid ) ;
}
return st ;
}
static int is_ssd(const char *file)
{
blkid_probe probe;
char wholedisk[32];
char sysfs_path[PATH_MAX];
dev_t devno;
int fd;
char rotational;
int ret;
probe = blkid_new_probe_from_filename(file);
if (!probe)
return 0;
/* Device number of this disk (possibly a partition) */
devno = blkid_probe_get_devno(probe);
if (!devno) {
blkid_free_probe(probe);
return 0;
}
/* Get whole disk name (not full path) for this devno */
ret = blkid_devno_to_wholedisk(devno,
wholedisk, sizeof(wholedisk), NULL);
if (ret) {
blkid_free_probe(probe);
return 0;
}
snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational",
wholedisk);
blkid_free_probe(probe);
fd = open(sysfs_path, O_RDONLY);
if (fd < 0) {
return 0;
}
if (read(fd, &rotational, sizeof(char)) < sizeof(char)) {
close(fd);
return 0;
}
close(fd);
return !atoi((const char *)&rotational);
}
static int probe_filesystem(const char *node, char **ret_fstype) {
#ifdef HAVE_BLKID
_cleanup_blkid_free_probe_ blkid_probe b = NULL;
const char *fstype;
int r;
b = blkid_new_probe_from_filename(node);
if (!b)
return -ENOMEM;
blkid_probe_enable_superblocks(b, 1);
blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == -2 || r == 1) {
log_debug("Failed to identify any partition type on partition %s", node);
goto not_found;
}
if (r != 0) {
if (errno == 0)
return -EIO;
return -errno;
}
(void) blkid_probe_lookup_value(b, "TYPE", &fstype, NULL);
if (fstype) {
char *t;
t = strdup(fstype);
if (!t)
return -ENOMEM;
*ret_fstype = t;
return 1;
}
not_found:
*ret_fstype = NULL;
return 0;
#else
return -EOPNOTSUPP;
#endif
}
static inline void probe_filesystem(struct format *target)
{
blkid_probe probe = 0;
static char *filesystems[] =
{
"ext2",
"ext3",
"ext4",
"reiserfs",
"jfs",
"xfs",
"btrfs",
"swap",
0
};
const char *filesystem = "unknown";
const char *result = 0;
if((probe = blkid_new_probe_from_filename(target->devicepath)) == 0)
goto bail;
if(blkid_probe_enable_superblocks(probe,true) == -1)
goto bail;
if(blkid_probe_filter_superblocks_type(probe,BLKID_FLTR_ONLYIN,filesystems) == -1)
goto bail;
if(blkid_probe_set_superblocks_flags(probe,BLKID_SUBLKS_TYPE) == -1)
goto bail;
if(blkid_do_probe(probe) == -1)
goto bail;
if(blkid_probe_lookup_value(probe,"TYPE",&result,0) == -1)
goto bail;
filesystem = result;
bail:
if(probe != 0)
blkid_free_probe(probe);
target->filesystem = strdup(filesystem);
}
int zuluCryptFileSystemIsFUSEbased( const char * device )
{
const char * cf = NULL ;
int st ;
blkid_probe blkid = blkid_new_probe_from_filename( device ) ;
if( blkid != NULL ){
blkid_do_probe( blkid ) ;
blkid_probe_lookup_value( blkid,"TYPE",&cf,NULL ) ;
#if 1
st = StringAtLeastOneMatch_1( cf,"ntfs","exfat",NULL ) ;
#else
st = StringAtLeastOneMatch_1( cf,"ntfs",NULL ) ;
#endif
blkid_free_probe( blkid ) ;
return st ;
}else{
return 0 ;
}
}
static blkid_probe
new_probe(const char *devname, int mode)
{
blkid_probe pr = NULL;
if (!devname)
return NULL;
if (mode) {
int fd = open(devname, mode);
if (fd < 0)
goto error;
pr = blkid_new_probe();
if (pr && blkid_probe_set_device(pr, fd, 0, 0)) {
close(fd);
goto error;
}
} else
pr = blkid_new_probe_from_filename(devname);
if (!pr)
goto error;
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_set_superblocks_flags(pr,
BLKID_SUBLKS_MAGIC | /* return magic string and offset */
BLKID_SUBLKS_TYPE | /* return superblock type */
BLKID_SUBLKS_USAGE | /* return USAGE= */
BLKID_SUBLKS_LABEL | /* return LABEL= */
BLKID_SUBLKS_UUID | /* return UUID= */
BLKID_SUBLKS_BADCSUM); /* accept bad checksums */
blkid_probe_enable_partitions(pr, 1);
blkid_probe_set_partitions_flags(pr, BLKID_PARTS_MAGIC);
return pr;
error:
blkid_free_probe(pr);
err(EXIT_FAILURE, _("error: %s: probing initialization failed"), devname);
return NULL;
}
/*
* Returns new libblkid prober. This function call exit() on error.
*/
static blkid_probe get_swap_prober(const char *devname)
{
blkid_probe pr;
int rc;
const char *version = NULL;
char *swap_filter[] = { "swap", NULL };
pr = blkid_new_probe_from_filename(devname);
if (!pr) {
warn(_("%s: unable to probe device"), devname);
return NULL;
}
blkid_probe_enable_superblocks(pr, TRUE);
blkid_probe_set_superblocks_flags(pr,
BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID |
BLKID_SUBLKS_VERSION);
blkid_probe_filter_superblocks_type(pr, BLKID_FLTR_ONLYIN, swap_filter);
rc = blkid_do_safeprobe(pr);
if (rc == -1)
warn(_("%s: unable to probe device"), devname);
else if (rc == -2)
warnx(_("%s: ambivalent probing result, use wipefs(8)"), devname);
else if (rc == 1)
warnx(_("%s: not a valid swap partition"), devname);
if (rc == 0) {
/* supported is SWAPSPACE2 only */
if (blkid_probe_lookup_value(pr, "VERSION", &version, NULL) == 0
&& version
&& strcmp(version, "2"))
warnx(_("%s: unsupported swap version '%s'"),
devname, version);
else
return pr;
}
blkid_free_probe(pr);
return NULL;
}
static struct wipe_desc *
read_offsets(struct wipe_desc *wp, const char *fname, int zap)
{
blkid_probe pr;
int rc;
if (!fname)
return NULL;
pr = blkid_new_probe_from_filename(fname);
if (!pr)
errx(EXIT_FAILURE, _("error: %s: probing initialization failed"), fname);
blkid_probe_enable_superblocks(pr, 0); /* enabled by default ;-( */
blkid_probe_enable_partitions(pr, 1);
rc = blkid_do_fullprobe(pr);
blkid_probe_enable_partitions(pr, 0);
if (rc == 0) {
const char *type = NULL;
blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL);
warnx(_("WARNING: %s: appears to contain '%s' "
"partition table"), fname, type);
}
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_MAGIC |
BLKID_SUBLKS_TYPE | BLKID_SUBLKS_USAGE |
BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID);
while (blkid_do_probe(pr) == 0) {
wp = get_offset_from_probe(wp, pr, zap);
if (!wp)
break;
}
blkid_free_probe(pr);
return wp;
}
static int set_disk_properties(struct sync_disk *disk)
{
blkid_probe probe;
blkid_topology topo;
uint32_t sector_size, ss_logical, ss_physical;
probe = blkid_new_probe_from_filename(disk->path);
if (!probe) {
log_error("cannot get blkid probe %s", disk->path);
return -1;
}
topo = blkid_probe_get_topology(probe);
if (!topo) {
log_error("cannot get blkid topology %s", disk->path);
blkid_free_probe(probe);
return -1;
}
sector_size = blkid_probe_get_sectorsize(probe);
ss_logical = blkid_topology_get_logical_sector_size(topo);
ss_physical = blkid_topology_get_physical_sector_size(topo);
blkid_free_probe(probe);
if ((sector_size != ss_logical) ||
(sector_size != ss_physical) ||
(sector_size % 512)) {
log_error("invalid disk sector size %u logical %u "
"physical %u %s", sector_size, ss_logical,
ss_physical, disk->path);
return -1;
}
disk->sector_size = sector_size;
return 0;
}
int main(int argc, char *argv[])
{
int i, nparts;
char *devname;
blkid_probe pr;
blkid_partlist ls;
blkid_parttable root_tab;
if (argc < 2) {
fprintf(stderr, "usage: %s <device|file> "
"-- prints partitions\n",
program_invocation_short_name);
return EXIT_FAILURE;
}
devname = argv[1];
pr = blkid_new_probe_from_filename(devname);
if (!pr)
err(EXIT_FAILURE, "%s: faild to create a new libblkid probe",
devname);
/* Binary interface */
ls = blkid_probe_get_partitions(pr);
if (!ls)
errx(EXIT_FAILURE, "%s: failed to read partitions\n", devname);
/*
* Print info about the primary (root) partition table
*/
root_tab = blkid_partlist_get_table(ls);
if (!root_tab)
errx(EXIT_FAILURE, "%s: does not contains any "
"known partition table\n", devname);
printf("size: %jd, sector size: %u, PT: %s, offset: %jd\n---\n",
blkid_probe_get_size(pr),
blkid_probe_get_sectorsize(pr),
blkid_parttable_get_type(root_tab),
blkid_parttable_get_offset(root_tab));
/*
* List partitions
*/
nparts = blkid_partlist_numof_partitions(ls);
if (!nparts)
goto done;
for (i = 0; i < nparts; i++) {
const char *p;
blkid_partition par = blkid_partlist_get_partition(ls, i);
blkid_parttable tab = blkid_partition_get_table(par);
printf("#%d: %10llu %10llu 0x%x",
blkid_partition_get_partno(par),
(unsigned long long) blkid_partition_get_start(par),
(unsigned long long) blkid_partition_get_size(par),
blkid_partition_get_type(par));
if (root_tab != tab)
/* subpartition (BSD, Minix, ...) */
printf(" (%s)", blkid_parttable_get_type(tab));
p = blkid_partition_get_name(par);
if (p)
printf(" name='%s'", p);
p = blkid_partition_get_uuid(par);
if (p)
printf(" uuid='%s'", p);
p = blkid_partition_get_type_string(par);
if (p)
printf(" type='%s'", p);
putc('\n', stdout);
}
done:
blkid_free_probe(pr);
return EXIT_SUCCESS;
}
void zuluCryptFileSystemProperties( string_t p,const char * mapper,const char * m_point )
{
const char * e ;
blkid_probe blkid ;
struct statvfs vfs ;
u_int64_t total ;
u_int64_t used ;
u_int64_t unused ;
u_int64_t block_size ;
char buff[ SIZE ] ;
char * buffer = buff ;
string_t q ;
ssize_t index ;
struct stat statstr ;
blkid = blkid_new_probe_from_filename( mapper ) ;
if( blkid == NULL ){
return ;
}
blkid_do_probe( blkid ) ;
if( blkid_probe_lookup_value( blkid,"TYPE",&e,NULL ) == 0 ){
StringMultipleAppend( p,"\n file system:\t",e,NULL ) ;
}else{
StringAppend( p,"\n file system:\tNil" ) ;
}
blkid_free_probe( blkid ) ;
if( statvfs( m_point,&vfs ) != 0 ){
return ;
}
block_size = vfs.f_frsize ;
total = block_size * vfs.f_blocks ;
unused = block_size * vfs.f_bavail ;
used = total - unused ;
zuluCryptFormatSize( total,buffer,SIZE ) ;
StringMultipleAppend( p,"\n total space:\t",buffer,NULL ) ;
zuluCryptFormatSize( used,buffer,SIZE ) ;
StringMultipleAppend( p,"\n used space:\t",buffer,NULL ) ;
zuluCryptFormatSize( unused,buffer,SIZE ) ;
StringMultipleAppend( p,"\n free space:\t",buffer,NULL ) ;
if( used == total ){
StringAppend( p,"\n used%: \t100%\n" ) ;
}else if( used == 0 ){
StringAppend( p,"\n used%: \t0%\n" ) ;
}else{
snprintf( buff,SIZE,"%.2f%%",100 * ( ( float ) used / ( float ) total ) ) ;
StringMultipleAppend( p,"\n used%: \t",buff,"\n",NULL ) ;
}
buffer = zuluCryptGetUUIDFromMapper( mapper ) ;
StringAppend( p,buffer ) ;
StringFree( buffer ) ;
StringMultipleAppend( p,"\n mount point1:\t",m_point,NULL ) ;
q = String( m_point ) ;
index = StringLastIndexOfChar( q,'/' ) ;
if( index == -1 ){
StringAppend( p,"\n mount point2:\tNil" ) ;
}else{
StringRemoveLeft( q,index ) ;
e = StringPrepend( q,"/run/media/public" ) ;
if( stat( e,&statstr ) == 0 ){
StringMultipleAppend( p,"\n mount point2:\t",e,NULL ) ;
}else{
StringAppend( p,"\n mount point2:\tNil" ) ;
}
}
StringDelete( &q ) ;
}
static virStoragePoolProbeResult
virStorageBackendFileSystemProbe(const char *device,
const char *format) {
virStoragePoolProbeResult ret = FILESYSTEM_PROBE_ERROR;
blkid_probe probe = NULL;
const char *fstype = NULL;
char *names[2], *libblkid_format = NULL;
VIR_DEBUG("Probing for existing filesystem of type %s on device %s",
format, device);
if (blkid_known_fstype(format) == 0) {
virStorageReportError(VIR_ERR_STORAGE_PROBE_FAILED,
_("Not capable of probing for "
"filesystem of type %s"),
format);
goto error;
}
probe = blkid_new_probe_from_filename(device);
if (probe == NULL) {
virStorageReportError(VIR_ERR_STORAGE_PROBE_FAILED,
_("Failed to create filesystem probe "
"for device %s"),
device);
goto error;
}
if ((libblkid_format = strdup(format)) == NULL) {
virReportOOMError();
goto error;
}
names[0] = libblkid_format;
names[1] = NULL;
blkid_probe_filter_superblocks_type(probe,
BLKID_FLTR_ONLYIN,
names);
if (blkid_do_probe(probe) != 0) {
VIR_INFO("No filesystem of type '%s' found on device '%s'",
format, device);
ret = FILESYSTEM_PROBE_NOT_FOUND;
} else if (blkid_probe_lookup_value(probe, "TYPE", &fstype, NULL) == 0) {
virStorageReportError(VIR_ERR_STORAGE_POOL_BUILT,
_("Existing filesystem of type '%s' found on "
"device '%s'"),
fstype, device);
ret = FILESYSTEM_PROBE_FOUND;
}
if (blkid_do_probe(probe) != 1) {
virStorageReportError(VIR_ERR_STORAGE_PROBE_FAILED,
_("Found additional probes to run, "
"filesystem probing may be incorrect"));
ret = FILESYSTEM_PROBE_ERROR;
}
error:
VIR_FREE(libblkid_format);
if (probe != NULL) {
blkid_free_probe(probe);
}
return ret;
}
/*
* It is possible for a btrfs volume to cover multiple volumes and this routine
* keeps only the first one seen and removes the rest.
*/
static stringList_t _remove_btfs_multiple_devices( stringList_t stl )
{
stringList_t stx = StringListVoid ;
stringList_t stz = StringListVoid ;
StringListIterator it ;
StringListIterator end ;
string_t st ;
const char * e ;
blkid_probe blkid ;
StringListGetIterators( stl,&it,&end ) ;
zuluCryptSecurityGainElevatedPrivileges() ;
while( it != end ){
st = *it ;
it++ ;
blkid = blkid_new_probe_from_filename( StringContent( st ) ) ;
if( blkid != NULL ){
e = NULL ;
blkid_do_probe( blkid ) ;
blkid_probe_lookup_value( blkid,"TYPE",&e,NULL ) ;
if( StringsAreEqual( e,"btrfs" ) ){
e = NULL ;
blkid_probe_lookup_value( blkid,"UUID",&e,NULL ) ;
if( StringListHasNoEntry( stx,e ) ){
/*
* we got a btrfs volume with UUID we do not know about,
* This will be the only device with this btrfs UUID we support and
* all device operations must happen through this device and this device only.
*/
stz = StringListAppendString( stz,st ) ;
stx = StringListAppend( stx,e ) ;
}else{
/*
* we already know this UUID and this device is not supported.Any operation on this
* device should fail.
*/
}
}else{
/*
* not a btrfs volume
*/
stz = StringListAppendString( stz,st ) ;
}
blkid_free_probe( blkid ) ;
}else{
stz = StringListAppendString( stz,st ) ;
}
}
zuluCryptSecurityDropElevatedPrivileges() ;
StringListMultipleDelete( &stl,&stx,NULL ) ;
return stz ;
}
u_int64_t zuluCryptGetVolumeSize( const char * device )
{
stringList_t stl = StringListVoid ;
StringListIterator it ;
StringListIterator end ;
string_t xt ;
const char * e ;
u_int64_t r = 0 ;
blkid_probe blkid = blkid_new_probe_from_filename( device ) ;
if( blkid == NULL ){
return 0 ;
}
e = NULL ;
blkid_do_probe( blkid ) ;
blkid_probe_lookup_value( blkid,"TYPE",&e,NULL ) ;
if( StringsAreNotEqual( e,"btrfs" ) ){
r = blkid_probe_get_size( blkid ) ;
blkid_free_probe( blkid ) ;
return r ;
}else{
/*
* we got a btrfs volume,this device could be one among a bunch of devices that makes the btfs volume.
* iterate through all known devices and add their sizes to this device if they are a part of the same
* btrfs volume.
*/
e = NULL ;
if( blkid_probe_lookup_value( blkid,"UUID",&e,NULL ) == 0 ){
xt = String( e ) ;
}else{
xt = StringVoid ;
}
blkid_free_probe( blkid ) ;
if( xt == StringVoid ){
return 0 ;
}else{
/*
* zuluCryptVolumeList() is defined in this source file
*/
stl = zuluCryptVolumeList() ;
zuluCryptSecurityGainElevatedPrivileges() ;
StringListGetIterators( stl,&it,&end ) ;
while( it != end ){
blkid = blkid_new_probe_from_filename( StringContent( *it ) ) ;
it++ ;
if( blkid != NULL ){
blkid_do_probe( blkid ) ;
e = NULL ;
if( blkid_probe_lookup_value( blkid,"UUID",&e,NULL ) == 0 ){
if( StringEqual( xt,e ) ){
r += blkid_probe_get_size( blkid ) ;
}
}
blkid_free_probe( blkid ) ;
}
}
StringDelete( &xt ) ;
StringListDelete( &stl ) ;
return r ;
}
}
}
void zuluCryptPrintPartitionProperties( const char * device )
{
#define SIZE 64
char buffer[ SIZE ] ;
const char * e ;
u_int64_t size ;
blkid_probe blkid ;
zuluCryptSecurityGainElevatedPrivileges() ;
if( StringPrefixEqual( device,"/dev/loop" ) ){
/*
* zuluCryptLoopDeviceAddress_1() is defined in ../lib/create_loop_device.c
*/
e = zuluCryptLoopDeviceAddress_1( device ) ;
if( e != NULL ){
printf( "%s\t",e ) ;
StringFree( e ) ;
}else{
printf( "%s\t",device ) ;
}
}else{
printf( "%s\t",device ) ;
}
size = zuluCryptGetVolumeSize( device ) ;
blkid = blkid_new_probe_from_filename( device ) ;
if( blkid == NULL ){
printf( "Nil\tNil\tNil\tNil\n" ) ;
}else{
/*
* zuluCryptFormatSize() is defined in ../lib/status.c
*/
zuluCryptFormatSize( size,buffer,SIZE ) ;
printf( "%s\t",buffer ) ;
blkid_do_probe( blkid ) ;
if( blkid_probe_lookup_value( blkid,"LABEL",&e,NULL ) == 0 ){
printf( "%s\t",e ) ;
}else{
printf( "Nil\t" ) ;
}
if( blkid_probe_lookup_value( blkid,"TYPE",&e,NULL ) == 0 ){
printf( "%s\t",e ) ;
}else{
printf( "Nil\t" ) ;
}
if( blkid_probe_lookup_value( blkid,"UUID",&e,NULL ) == 0 ){
printf( "%s\n",e ) ;
}else{
printf( "Nil\n" ) ;
}
blkid_free_probe( blkid ) ;
}
zuluCryptSecurityDropElevatedPrivileges() ;
}
static int verify_esp(const char *p, uint32_t *part, uint64_t *pstart, uint64_t *psize, sd_id128_t *uuid) {
struct statfs sfs;
struct stat st, st2;
char *t;
blkid_probe b = NULL;
int r;
const char *v;
if (statfs(p, &sfs) < 0) {
fprintf(stderr, "Failed to check file system type of %s: %m\n", p);
return -errno;
}
if (sfs.f_type != 0x4d44) {
fprintf(stderr, "File system %s is not a FAT EFI System Partition (ESP) file system.\n", p);
return -ENODEV;
}
if (stat(p, &st) < 0) {
fprintf(stderr, "Failed to determine block device node of %s: %m\n", p);
return -errno;
}
if (major(st.st_dev) == 0) {
fprintf(stderr, "Block device node of %p is invalid.\n", p);
return -ENODEV;
}
r = asprintf(&t, "%s/..", p);
if (r < 0) {
fprintf(stderr, "Out of memory.\n");
return -ENOMEM;
}
r = stat(t, &st2);
free(t);
if (r < 0) {
fprintf(stderr, "Failed to determine block device node of parent of %s: %m\n", p);
return -errno;
}
if (st.st_dev == st2.st_dev) {
fprintf(stderr, "Directory %s is not the root of the EFI System Partition (ESP) file system.\n", p);
return -ENODEV;
}
r = asprintf(&t, "/dev/block/%u:%u", major(st.st_dev), minor(st.st_dev));
if (r < 0) {
fprintf(stderr, "Out of memory.\n");
return -ENOMEM;
}
errno = 0;
b = blkid_new_probe_from_filename(t);
free(t);
if (!b) {
if (errno != 0) {
fprintf(stderr, "Failed to open file system %s: %m\n", p);
return -errno;
}
fprintf(stderr, "Out of memory.\n");
return -ENOMEM;
}
blkid_probe_enable_superblocks(b, 1);
blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
blkid_probe_enable_partitions(b, 1);
blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == -2) {
fprintf(stderr, "File system %s is ambigious.\n", p);
r = -ENODEV;
goto fail;
} else if (r == 1) {
fprintf(stderr, "File system %s does not contain a label.\n", p);
r = -ENODEV;
goto fail;
} else if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe file system %s: %s\n", p, strerror(-r));
goto fail;
}
errno = 0;
r = blkid_probe_lookup_value(b, "TYPE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe file system type %s: %s\n", p, strerror(-r));
goto fail;
}
if (strcmp(v, "vfat") != 0) {
fprintf(stderr, "File system %s is not a FAT EFI System Partition (ESP) file system after all.\n", p);
r = -ENODEV;
goto fail;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_SCHEME", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition scheme %s: %s\n", p, strerror(-r));
goto fail;
}
if (strcmp(v, "gpt") != 0) {
fprintf(stderr, "File system %s is not on a GPT partition table.\n", p);
r = -ENODEV;
goto fail;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_TYPE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition type UUID %s: %s\n", p, strerror(-r));
goto fail;
}
if (strcmp(v, "c12a7328-f81f-11d2-ba4b-00a0c93ec93b") != 0) {
r = -ENODEV;
fprintf(stderr, "File system %s is not an EFI System Partition (ESP).\n", p);
goto fail;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_UUID", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition entry UUID %s: %s\n", p, strerror(-r));
goto fail;
}
r = sd_id128_from_string(v, uuid);
if (r < 0) {
fprintf(stderr, "Partition %s has invalid UUID: %s\n", p, v);
r = -EIO;
goto fail;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_NUMBER", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition number %s: %s\n", p, strerror(-r));
goto fail;
}
*part = strtoul(v, NULL, 10);
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_OFFSET", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition offset %s: %s\n", p, strerror(-r));
goto fail;
}
*pstart = strtoul(v, NULL, 10);
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_SIZE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
fprintf(stderr, "Failed to probe partition size %s: %s\n", p, strerror(-r));
goto fail;
}
*psize = strtoul(v, NULL, 10);
blkid_free_probe(b);
return 0;
fail:
if (b)
blkid_free_probe(b);
return r;
}
static int verify_esp(const char *p, uint32_t *part, uint64_t *pstart, uint64_t *psize, sd_id128_t *uuid) {
struct statfs sfs;
struct stat st, st2;
_cleanup_free_ char *t = NULL;
_cleanup_blkid_free_probe_ blkid_probe b = NULL;
int r;
const char *v, *t2;
if (statfs(p, &sfs) < 0)
return log_error_errno(errno, "Failed to check file system type of \"%s\": %m", p);
if (sfs.f_type != 0x4d44) {
log_error("File system \"%s\" is not a FAT EFI System Partition (ESP) file system.", p);
return -ENODEV;
}
if (stat(p, &st) < 0)
return log_error_errno(errno, "Failed to determine block device node of \"%s\": %m", p);
if (major(st.st_dev) == 0) {
log_error("Block device node of %p is invalid.", p);
return -ENODEV;
}
t2 = strjoina(p, "/..");
r = stat(t2, &st2);
if (r < 0)
return log_error_errno(errno, "Failed to determine block device node of parent of \"%s\": %m", p);
if (st.st_dev == st2.st_dev) {
log_error("Directory \"%s\" is not the root of the EFI System Partition (ESP) file system.", p);
return -ENODEV;
}
r = asprintf(&t, "/dev/block/%u:%u", major(st.st_dev), minor(st.st_dev));
if (r < 0)
return log_oom();
errno = 0;
b = blkid_new_probe_from_filename(t);
if (!b) {
if (errno == 0)
return log_oom();
return log_error_errno(errno, "Failed to open file system \"%s\": %m", p);
}
blkid_probe_enable_superblocks(b, 1);
blkid_probe_set_superblocks_flags(b, BLKID_SUBLKS_TYPE);
blkid_probe_enable_partitions(b, 1);
blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == -2) {
log_error("File system \"%s\" is ambiguous.", p);
return -ENODEV;
} else if (r == 1) {
log_error("File system \"%s\" does not contain a label.", p);
return -ENODEV;
} else if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe file system \"%s\": %m", p);
}
errno = 0;
r = blkid_probe_lookup_value(b, "TYPE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe file system type \"%s\": %m", p);
}
if (!streq(v, "vfat")) {
log_error("File system \"%s\" is not FAT.", p);
return -ENODEV;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_SCHEME", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition scheme \"%s\": %m", p);
}
if (!streq(v, "gpt")) {
log_error("File system \"%s\" is not on a GPT partition table.", p);
return -ENODEV;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_TYPE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition type UUID \"%s\": %m", p);
}
if (!streq(v, "c12a7328-f81f-11d2-ba4b-00a0c93ec93b")) {
log_error("File system \"%s\" has wrong type for an EFI System Partition (ESP).", p);
return -ENODEV;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_UUID", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition entry UUID \"%s\": %m", p);
}
r = sd_id128_from_string(v, uuid);
if (r < 0) {
log_error("Partition \"%s\" has invalid UUID \"%s\".", p, v);
return -EIO;
}
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_NUMBER", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition number \"%s\": m", p);
}
*part = strtoul(v, NULL, 10);
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_OFFSET", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition offset \"%s\": %m", p);
}
*pstart = strtoul(v, NULL, 10);
errno = 0;
r = blkid_probe_lookup_value(b, "PART_ENTRY_SIZE", &v, NULL);
if (r != 0) {
r = errno ? -errno : -EIO;
return log_error_errno(r, "Failed to probe partition size \"%s\": %m", p);
}
*psize = strtoul(v, NULL, 10);
return 0;
}
static int enumerate_partitions(dev_t devnum) {
_cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
_cleanup_blkid_free_probe_ blkid_probe b = NULL;
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_free_ char *boot = NULL, *home = NULL, *srv = NULL;
struct udev_list_entry *first, *item;
struct udev_device *parent = NULL;
const char *name, *node, *pttype, *devtype;
int boot_nr = -1, home_nr = -1, srv_nr = -1;
bool home_rw = true, srv_rw = true;
blkid_partlist pl;
int r, k;
dev_t pn;
udev = udev_new();
if (!udev)
return log_oom();
d = udev_device_new_from_devnum(udev, 'b', devnum);
if (!d)
return log_oom();
name = udev_device_get_devnode(d);
if (!name)
name = udev_device_get_syspath(d);
if (!name) {
log_debug("Device %u:%u does not have a name, ignoring.",
major(devnum), minor(devnum));
return 0;
}
parent = udev_device_get_parent(d);
if (!parent) {
log_debug("%s: not a partitioned device, ignoring.", name);
return 0;
}
/* Does it have a devtype? */
devtype = udev_device_get_devtype(parent);
if (!devtype) {
log_debug("%s: parent doesn't have a device type, ignoring.", name);
return 0;
}
/* Is this a disk or a partition? We only care for disks... */
if (!streq(devtype, "disk")) {
log_debug("%s: parent isn't a raw disk, ignoring.", name);
return 0;
}
/* Does it have a device node? */
node = udev_device_get_devnode(parent);
if (!node) {
log_debug("%s: parent device does not have device node, ignoring.", name);
return 0;
}
log_debug("%s: root device %s.", name, node);
pn = udev_device_get_devnum(parent);
if (major(pn) == 0)
return 0;
errno = 0;
b = blkid_new_probe_from_filename(node);
if (!b) {
if (errno == 0)
return log_oom();
return log_error_errno(errno, "%s: failed to allocate prober: %m", node);
}
blkid_probe_enable_partitions(b, 1);
blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == 1)
return 0; /* no results */
else if (r == -2) {
log_warning("%s: probe gave ambiguous results, ignoring", node);
return 0;
} else if (r != 0)
return log_error_errno(errno ?: EIO, "%s: failed to probe: %m", node);
errno = 0;
r = blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL);
if (r != 0)
return log_error_errno(errno ?: EIO,
"%s: failed to determine partition table type: %m", node);
/* We only do this all for GPT... */
if (!streq_ptr(pttype, "gpt")) {
log_debug("%s: not a GPT partition table, ignoring.", node);
return 0;
}
errno = 0;
pl = blkid_probe_get_partitions(b);
if (!pl) {
if (errno == 0)
return log_oom();
return log_error_errno(errno, "%s: failed to list partitions: %m", node);
}
e = udev_enumerate_new(udev);
if (!e)
return log_oom();
r = udev_enumerate_add_match_parent(e, parent);
if (r < 0)
return log_oom();
r = udev_enumerate_add_match_subsystem(e, "block");
if (r < 0)
return log_oom();
r = udev_enumerate_scan_devices(e);
if (r < 0)
return log_error_errno(r, "%s: failed to enumerate partitions: %m", node);
first = udev_enumerate_get_list_entry(e);
udev_list_entry_foreach(item, first) {
_cleanup_udev_device_unref_ struct udev_device *q;
unsigned long long flags;
const char *stype, *subnode;
sd_id128_t type_id;
blkid_partition pp;
dev_t qn;
int nr;
q = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
if (!q)
continue;
qn = udev_device_get_devnum(q);
if (major(qn) == 0)
continue;
if (qn == devnum)
continue;
if (qn == pn)
continue;
subnode = udev_device_get_devnode(q);
if (!subnode)
continue;
pp = blkid_partlist_devno_to_partition(pl, qn);
if (!pp)
continue;
nr = blkid_partition_get_partno(pp);
if (nr < 0)
continue;
stype = blkid_partition_get_type_string(pp);
if (!stype)
continue;
if (sd_id128_from_string(stype, &type_id) < 0)
continue;
flags = blkid_partition_get_flags(pp);
if (sd_id128_equal(type_id, GPT_SWAP)) {
if (flags & GPT_FLAG_NO_AUTO)
continue;
if (flags & GPT_FLAG_READ_ONLY) {
log_debug("%s marked as read-only swap partition, which is bogus. Ignoring.", subnode);
continue;
}
k = add_swap(subnode);
if (k < 0)
r = k;
} else if (sd_id128_equal(type_id, GPT_ESP)) {
/* We only care for the first /boot partition */
if (boot && nr >= boot_nr)
continue;
/* Note that we do not honour the "no-auto"
* flag for the ESP, as it is often unset, to
* hide it from Windows. */
boot_nr = nr;
r = free_and_strdup(&boot, subnode);
if (r < 0)
return log_oom();
} else if (sd_id128_equal(type_id, GPT_HOME)) {
if (flags & GPT_FLAG_NO_AUTO)
continue;
/* We only care for the first /home partition */
if (home && nr >= home_nr)
continue;
home_nr = nr;
home_rw = !(flags & GPT_FLAG_READ_ONLY),
r = free_and_strdup(&home, subnode);
if (r < 0)
return log_oom();
} else if (sd_id128_equal(type_id, GPT_SRV)) {
if (flags & GPT_FLAG_NO_AUTO)
continue;
/* We only care for the first /srv partition */
if (srv && nr >= srv_nr)
continue;
srv_nr = nr;
srv_rw = !(flags & GPT_FLAG_READ_ONLY),
r = free_and_strdup(&srv, subnode);
if (r < 0)
return log_oom();
}
}
static int add_boot(const char *what) {
_cleanup_blkid_free_probe_ blkid_probe b = NULL;
const char *fstype = NULL, *uuid = NULL;
sd_id128_t id, type_id;
int r;
assert(what);
if (!is_efi_boot()) {
log_debug("Not an EFI boot, ignoring /boot.");
return 0;
}
if (in_initrd()) {
log_debug("In initrd, ignoring /boot.");
return 0;
}
if (detect_container() > 0) {
log_debug("In a container, ignoring /boot.");
return 0;
}
/* We create an .automount which is not overridden by the .mount from the fstab generator. */
if (fstab_is_mount_point("/boot")) {
log_debug("/boot specified in fstab, ignoring.");
return 0;
}
if (path_is_busy("/boot")) {
log_debug("/boot already populated, ignoring.");
return 0;
}
r = efi_loader_get_device_part_uuid(&id);
if (r == -ENOENT) {
log_debug("EFI loader partition unknown.");
return 0;
}
if (r < 0) {
log_error_errno(r, "Failed to read ESP partition UUID: %m");
return r;
}
errno = 0;
b = blkid_new_probe_from_filename(what);
if (!b) {
if (errno == 0)
return log_oom();
return log_error_errno(errno, "Failed to allocate prober: %m");
}
blkid_probe_enable_partitions(b, 1);
blkid_probe_set_partitions_flags(b, BLKID_PARTS_ENTRY_DETAILS);
errno = 0;
r = blkid_do_safeprobe(b);
if (r == -2 || r == 1) /* no result or uncertain */
return 0;
else if (r != 0)
return log_error_errno(errno ?: EIO, "Failed to probe %s: %m", what);
(void) blkid_probe_lookup_value(b, "TYPE", &fstype, NULL);
if (!streq(fstype, "vfat")) {
log_debug("Partition for /boot is not a FAT filesystem, ignoring.");
return 0;
}
r = blkid_probe_lookup_value(b, "PART_ENTRY_UUID", &uuid, NULL);
if (r != 0) {
log_debug_errno(r, "Partition for /boot does not have a UUID, ignoring. %m");
return 0;
}
if (sd_id128_from_string(uuid, &type_id) < 0) {
log_debug("Partition for /boot does not have a valid UUID, ignoring.");
return 0;
}
if (!sd_id128_equal(type_id, id)) {
log_debug("Partition for /boot does not appear to be the partition we are booted from.");
return 0;
}
r = add_automount("boot",
what,
"/boot",
"vfat",
true,
"umask=0077",
"EFI System Partition Automount",
120 * USEC_PER_SEC);
return r;
}
/**
* mnt_cache_read_tags
* @cache: pointer to struct libmnt_cache instance
* @devname: path device
*
* Reads @devname LABEL and UUID to the @cache.
*
* Returns: 0 if at least one tag was added, 1 if no tag was added or
* negative number in case of error.
*/
int mnt_cache_read_tags(struct libmnt_cache *cache, const char *devname)
{
blkid_probe pr;
size_t i, ntags = 0;
int rc;
const char *tags[] = { "LABEL", "UUID", "TYPE", "PARTUUID", "PARTLABEL" };
const char *blktags[] = { "LABEL", "UUID", "TYPE", "PART_ENTRY_UUID", "PART_ENTRY_NAME" };
if (!cache || !devname)
return -EINVAL;
DBG(CACHE, ul_debugobj(cache, "tags for %s requested", devname));
/* check if device is already cached */
for (i = 0; i < cache->nents; i++) {
struct mnt_cache_entry *e = &cache->ents[i];
if (!(e->flag & MNT_CACHE_TAGREAD))
continue;
if (strcmp(e->value, devname) == 0)
/* tags have already been read */
return 0;
}
pr = blkid_new_probe_from_filename(devname);
if (!pr)
return -1;
blkid_probe_enable_superblocks(pr, 1);
blkid_probe_set_superblocks_flags(pr,
BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID |
BLKID_SUBLKS_TYPE);
blkid_probe_enable_partitions(pr, 1);
blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
rc = blkid_do_safeprobe(pr);
if (rc)
goto error;
DBG(CACHE, ul_debugobj(cache, "reading tags for: %s", devname));
for (i = 0; i < ARRAY_SIZE(tags); i++) {
const char *data;
char *dev;
if (cache_find_tag_value(cache, devname, tags[i])) {
DBG(CACHE, ul_debugobj(cache,
"\ntag %s already cached", tags[i]));
continue;
}
if (blkid_probe_lookup_value(pr, blktags[i], &data, NULL))
continue;
dev = strdup(devname);
if (!dev)
goto error;
if (cache_add_tag(cache, tags[i], data, dev,
MNT_CACHE_TAGREAD)) {
free(dev);
goto error;
}
ntags++;
}
DBG(CACHE, ul_debugobj(cache, "\tread %zd tags", ntags));
blkid_free_probe(pr);
return ntags ? 0 : 1;
error:
blkid_free_probe(pr);
return rc < 0 ? rc : -1;
}
int mountdevice(const char *devnode){
/*Using device's MBR information to retrieve partitions and its types
* to mount it correctly*/
blkid_probe pr; /*BLKID probe struct*/
blkid_partlist pl; /*BLKID partitions list*/
int nparts, i;
char *pname = (char*)malloc(32 * sizeof(char));
char *mountpoint = (char*)malloc(128 * sizeof(char));
pr = blkid_new_probe_from_filename(devnode); /*Starts blkid probe*/
if (!pr){
fprintf(stderr, "Error on opening device: %s - %s\n", devnode, strerror(errno));
return -1;
}
if (!pname || !mountpoint){
fprintf(stderr, "Not able to allocate memory, will not mount anything\n");
return -1;
}
pl = blkid_probe_get_partitions(pr); /*Getting partition list*/
nparts = blkid_partlist_numof_partitions(pl); /*Getting the number of partitions*/
for (i = 0; i < nparts; i++){
char *pnametmp; /*temp variable to be tokenized by udev_get_partition*/
char *ptype, *cmd;
int t_part, partno, mstatus;
struct stat st = {0};
blkid_partition part = blkid_partlist_get_partition(pl, i);
t_part = blkid_partition_get_type(part);
partno = blkid_partition_get_partno(part);
fprintf(stdout, "Partition: %d, type: 0x%x\n", partno, t_part);
sprintf(pname, "%s%d", devnode, partno);
pnametmp = (char*)malloc(strlen(pname) * sizeof(char));
if (!pnametmp){
fprintf(stderr, "Could not allocate memory, will not mount anything\n");
return -1;
}
strcpy(pnametmp, pname);
sprintf(mountpoint, "/media/USBSTICK%s", udev_get_partition(pnametmp));
/*Freeing temporary variable*/
free(pnametmp);
fprintf(stdout, "Preparing to mount: %s\n", pname);
if (stat(mountpoint, &st) == -1){
fprintf(stdout, "Creating dir: %s\n", mountpoint);
/*create a new dir*/
if(mkdir(mountpoint, 0777) == -1){
fprintf(stderr, "Unable to create: %s. Error: %s\n", mountpoint, strerror(errno));
return -1;
}else{
fprintf(stdout, "%s create successfully.\n", mountpoint);
}
}
fprintf(stdout, "Mounting %s on %s\n", pname, mountpoint);
ptype = getpartitiontype(t_part);
mstatus = mount(pname, mountpoint, ptype, MS_SYNCHRONOUS, "");
if (mstatus == -1){
cmd = (char*)malloc(SLENGHT * sizeof(char));
fprintf(stderr, "Error mounting [%s]: %s\n", pname, strerror(errno));
sprintf(cmd, "DISPLAY=:0 zenity --notification --text\"Não foi possivel montar\
%s\" --timeout=2", pname);
if(fork() == 0)
system(cmd);
else
wait(NULL);
free(cmd);
return -1;
}else{
