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#include <blkid.h>
#ifdef HAVE_LIBUDEV
# include <libudev.h>
#endif
#include "c.h"
#include "xalloc.h"
#include "mangle.h"
#include "lsblk.h"
#ifdef HAVE_LIBUDEV
static struct udev *udev;
#endif
void lsblk_device_free_properties(struct lsblk_devprop *p)
{
if (!p)
return;
free(p->fstype);
free(p->uuid);
free(p->ptuuid);
free(p->pttype);
free(p->label);
free(p->parttype);
free(p->partuuid);
free(p->partlabel);
free(p->wwn);
free(p->serial);
free(p->model);
free(p);
}
#ifndef HAVE_LIBUDEV
static struct lsblk_devprop *get_properties_by_udev(struct blkdev_cxt *cxt
__attribute__((__unused__)))
{
return NULL;
}
#else
static struct lsblk_devprop *get_properties_by_udev(struct blkdev_cxt *cxt)
{
struct udev_device *dev;
if (cxt->udev_requested)
return cxt->properties;
if (lsblk->sysroot)
goto done;
if (!udev)
udev = udev_new(); /* global handler */
if (!udev)
goto done;
dev = udev_device_new_from_subsystem_sysname(udev, "block", cxt->name);
if (dev) {
const char *data;
struct lsblk_devprop *prop;
if (cxt->properties)
lsblk_device_free_properties(cxt->properties);
prop = cxt->properties = xcalloc(1, sizeof(*cxt->properties));
if ((data = udev_device_get_property_value(dev, "ID_FS_LABEL_ENC"))) {
prop->label = xstrdup(data);
unhexmangle_string(prop->label);
}
if ((data = udev_device_get_property_value(dev, "ID_FS_UUID_ENC"))) {
prop->uuid = xstrdup(data);
unhexmangle_string(prop->uuid);
}
if ((data = udev_device_get_property_value(dev, "ID_PART_TABLE_UUID")))
prop->ptuuid = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_PART_TABLE_TYPE")))
prop->pttype = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_NAME"))) {
prop->partlabel = xstrdup(data);
unhexmangle_string(prop->partlabel);
}
if ((data = udev_device_get_property_value(dev, "ID_FS_TYPE")))
prop->fstype = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_TYPE")))
prop->parttype = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_UUID")))
prop->partuuid = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_FLAGS")))
prop->partflags = xstrdup(data);
data = udev_device_get_property_value(dev, "ID_WWN_WITH_EXTENSION");
if (!data)
data = udev_device_get_property_value(dev, "ID_WWN");
if (data)
prop->wwn = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_SERIAL_SHORT")))
prop->serial = xstrdup(data);
if ((data = udev_device_get_property_value(dev, "ID_MODEL")))
prop->model = xstrdup(data);
udev_device_unref(dev);
DBG(DEV, ul_debugobj(cxt, "%s: found udev properties", cxt->name));
}
done:
cxt->udev_requested = 1;
return cxt->properties;
}
#endif /* HAVE_LIBUDEV */
static struct lsblk_devprop *get_properties_by_blkid(struct blkdev_cxt *cxt)
{
blkid_probe pr = NULL;
if (cxt->blkid_requested)
return cxt->properties;
if (!cxt->size)
goto done;
if (getuid() != 0)
goto done;; /* no permissions to read from the device */
pr = blkid_new_probe_from_filename(cxt->filename);
if (!pr)
goto done;
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);
if (!blkid_do_safeprobe(pr)) {
const char *data = NULL;
struct lsblk_devprop *prop;
if (cxt->properties)
lsblk_device_free_properties(cxt->properties);
prop = cxt->properties = xcalloc(1, sizeof(*cxt->properties));
if (!blkid_probe_lookup_value(pr, "TYPE", &data, NULL))
prop->fstype = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "UUID", &data, NULL))
prop->uuid = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PTUUID", &data, NULL))
prop->ptuuid = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PTTYPE", &data, NULL))
prop->pttype = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "LABEL", &data, NULL))
prop->label = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PART_ENTRY_TYPE", &data, NULL))
prop->parttype = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PART_ENTRY_UUID", &data, NULL))
prop->partuuid = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PART_ENTRY_NAME", &data, NULL))
prop->partlabel = xstrdup(data);
if (!blkid_probe_lookup_value(pr, "PART_ENTRY_FLAGS", &data, NULL))
prop->partflags = xstrdup(data);
DBG(DEV, ul_debugobj(cxt, "%s: found blkid properties", cxt->name));
}
done:
blkid_free_probe(pr);
cxt->blkid_requested = 1;
return cxt->properties;
}
struct lsblk_devprop *lsblk_device_get_properties(struct blkdev_cxt *cxt)
{
struct lsblk_devprop *p = get_properties_by_udev(cxt);
if (!p)
p = get_properties_by_blkid(cxt);
return p;
}
void lsblk_properties_deinit(void)
{
#ifdef HAVE_LIBUDEV
udev_unref(udev);
#endif
}
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