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-rw-r--r--grub-core/osdep/freebsd/getroot.c364
1 files changed, 364 insertions, 0 deletions
diff --git a/grub-core/osdep/freebsd/getroot.c b/grub-core/osdep/freebsd/getroot.c
new file mode 100644
index 0000000..b1e8244
--- /dev/null
+++ b/grub-core/osdep/freebsd/getroot.c
@@ -0,0 +1,364 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config-util.h>
+#include <config.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <dirent.h>
+#include <errno.h>
+#include <error.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+#include <grub/types.h>
+# include <sys/param.h>
+# include <sys/mount.h>
+# include <sys/disk.h> /* DIOCGMEDIASIZE */
+# include <sys/param.h>
+# include <sys/sysctl.h>
+#include <libgeom.h>
+
+#include <grub/util/misc.h>
+
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/emu/misc.h>
+#include <grub/emu/hostdisk.h>
+#include <grub/emu/getroot.h>
+#include <grub/cryptodisk.h>
+
+#include <sys/wait.h>
+
+#include <libgeom.h>
+
+#define LVM_DEV_MAPPER_STRING "/dev/linux_lvm/"
+
+static const char *
+grub_util_get_geom_abstraction (const char *dev)
+{
+ char *whole;
+ struct gmesh mesh;
+ struct gclass *class;
+ const char *name;
+ int err;
+
+ if (strncmp (dev, "/dev/", sizeof ("/dev/") - 1) != 0)
+ return 0;
+ name = dev + sizeof ("/dev/") - 1;
+ grub_util_follow_gpart_up (name, NULL, &whole);
+
+ grub_util_info ("following geom '%s'", name);
+
+ err = geom_gettree (&mesh);
+ if (err != 0)
+ /* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
+ Usually left untranslated.
+ */
+ grub_util_error ("%s", _("couldn't open geom"));
+
+ LIST_FOREACH (class, &mesh.lg_class, lg_class)
+ {
+ struct ggeom *geom;
+ LIST_FOREACH (geom, &class->lg_geom, lg_geom)
+ {
+ struct gprovider *provider;
+ LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
+ if (strcmp (provider->lg_name, name) == 0)
+ return class->lg_name;
+ }
+ }
+ return NULL;
+}
+
+enum grub_dev_abstraction_types
+grub_util_get_dev_abstraction_os (const char *os_dev)
+{
+ const char *abstrac;
+ abstrac = grub_util_get_geom_abstraction (os_dev);
+ grub_util_info ("abstraction of %s is %s", os_dev, abstrac);
+ if (abstrac && grub_strcasecmp (abstrac, "eli") == 0)
+ return GRUB_DEV_ABSTRACTION_GELI;
+
+ /* Check for LVM. */
+ if (!strncmp (os_dev, LVM_DEV_MAPPER_STRING, sizeof(LVM_DEV_MAPPER_STRING)-1))
+ return GRUB_DEV_ABSTRACTION_LVM;
+ return GRUB_DEV_ABSTRACTION_NONE;
+}
+
+char *
+grub_util_part_to_disk (const char *os_dev, struct stat *st,
+ int *is_part)
+{
+ char *out, *out2;
+
+ if (! S_ISCHR (st->st_mode))
+ {
+ *is_part = 0;
+ return xstrdup (os_dev);
+ }
+
+ if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
+ return xstrdup (os_dev);
+ grub_util_follow_gpart_up (os_dev + sizeof ("/dev/") - 1, NULL, &out);
+
+ if (grub_strcmp (os_dev + sizeof ("/dev/") - 1, out) != 0)
+ *is_part = 1;
+ out2 = xasprintf ("/dev/%s", out);
+ free (out);
+
+ return out2;
+}
+
+int
+grub_util_pull_device_os (const char *os_dev,
+ enum grub_dev_abstraction_types ab)
+{
+ switch (ab)
+ {
+ case GRUB_DEV_ABSTRACTION_GELI:
+ {
+ char *whole;
+ struct gmesh mesh;
+ struct gclass *class;
+ const char *name;
+ int err;
+ char *lastsubdev = NULL;
+
+ if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
+ return 1;
+ name = os_dev + sizeof ("/dev/") - 1;
+ grub_util_follow_gpart_up (name, NULL, &whole);
+
+ grub_util_info ("following geom '%s'", name);
+
+ err = geom_gettree (&mesh);
+ if (err != 0)
+ /* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
+ Usually left untranslated.
+ */
+ grub_util_error ("%s", _("couldn't open geom"));
+
+ LIST_FOREACH (class, &mesh.lg_class, lg_class)
+ {
+ struct ggeom *geom;
+ LIST_FOREACH (geom, &class->lg_geom, lg_geom)
+ {
+ struct gprovider *provider;
+ LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
+ if (strcmp (provider->lg_name, name) == 0)
+ {
+ struct gconsumer *consumer;
+ char *fname;
+
+ LIST_FOREACH (consumer, &geom->lg_consumer, lg_consumer)
+ break;
+ if (!consumer)
+ grub_util_error ("%s",
+ _("couldn't find geli consumer"));
+ fname = xasprintf ("/dev/%s", consumer->lg_provider->lg_name);
+ grub_util_info ("consumer %s", consumer->lg_provider->lg_name);
+ lastsubdev = consumer->lg_provider->lg_name;
+ grub_util_pull_device (fname);
+ free (fname);
+ }
+ }
+ }
+ if (ab == GRUB_DEV_ABSTRACTION_GELI && lastsubdev)
+ {
+ char *fname = xasprintf ("/dev/%s", lastsubdev);
+ char *grdev = grub_util_get_grub_dev (fname);
+ free (fname);
+
+ if (grdev)
+ {
+ grub_err_t gr_err;
+ gr_err = grub_cryptodisk_cheat_mount (grdev, os_dev);
+ if (gr_err)
+ grub_util_error (_("can't mount encrypted volume `%s': %s"),
+ lastsubdev, grub_errmsg);
+ }
+
+ grub_free (grdev);
+ }
+ }
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+char *
+grub_util_get_grub_dev_os (const char *os_dev)
+{
+ char *grub_dev = NULL;
+
+ switch (grub_util_get_dev_abstraction (os_dev))
+ {
+ /* Fallback for non-devmapper build. In devmapper-builds LVM is handled
+ in rub_util_get_devmapper_grub_dev and this point isn't reached.
+ */
+ case GRUB_DEV_ABSTRACTION_LVM:
+ {
+ unsigned short len;
+ grub_size_t offset = sizeof (LVM_DEV_MAPPER_STRING) - 1;
+
+ len = strlen (os_dev) - offset + 1;
+ grub_dev = xmalloc (len + sizeof ("lvm/"));
+
+ grub_memcpy (grub_dev, "lvm/", sizeof ("lvm/") - 1);
+ grub_memcpy (grub_dev + sizeof ("lvm/") - 1, os_dev + offset, len);
+ }
+ break;
+
+ case GRUB_DEV_ABSTRACTION_GELI:
+ {
+ char *whole;
+ struct gmesh mesh;
+ struct gclass *class;
+ const char *name;
+ int err;
+
+ if (strncmp (os_dev, "/dev/", sizeof ("/dev/") - 1) != 0)
+ return 0;
+ name = os_dev + sizeof ("/dev/") - 1;
+ grub_util_follow_gpart_up (name, NULL, &whole);
+
+ grub_util_info ("following geom '%s'", name);
+
+ err = geom_gettree (&mesh);
+ if (err != 0)
+ /* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
+ Usually left untranslated.
+ */
+ grub_util_error ("%s", _("couldn't open geom"));
+
+ LIST_FOREACH (class, &mesh.lg_class, lg_class)
+ {
+ struct ggeom *geom;
+ LIST_FOREACH (geom, &class->lg_geom, lg_geom)
+ {
+ struct gprovider *provider;
+ LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
+ if (strcmp (provider->lg_name, name) == 0)
+ {
+ struct gconsumer *consumer;
+ char *fname;
+ char *uuid;
+
+ LIST_FOREACH (consumer, &geom->lg_consumer, lg_consumer)
+ break;
+ if (!consumer)
+ grub_util_error ("%s",
+ _("couldn't find geli consumer"));
+ fname = xasprintf ("/dev/%s", consumer->lg_provider->lg_name);
+ uuid = grub_util_get_geli_uuid (fname);
+ if (!uuid)
+ grub_util_error ("%s",
+ _("couldn't retrieve geli UUID"));
+ grub_dev = xasprintf ("cryptouuid/%s", uuid);
+ free (fname);
+ free (uuid);
+ }
+ }
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return grub_dev;
+}
+
+/* FIXME: geom actually gives us the whole container hierarchy.
+ It can be used more efficiently than this. */
+void
+grub_util_follow_gpart_up (const char *name, grub_disk_addr_t *off_out, char **name_out)
+{
+ struct gmesh mesh;
+ struct gclass *class;
+ int err;
+ struct ggeom *geom;
+
+ grub_util_info ("following geom '%s'", name);
+
+ err = geom_gettree (&mesh);
+ if (err != 0)
+ /* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
+ Usually left untranslated.
+ */
+ grub_util_error ("%s", _("couldn't open geom"));
+
+ LIST_FOREACH (class, &mesh.lg_class, lg_class)
+ if (strcasecmp (class->lg_name, "part") == 0)
+ break;
+ if (!class)
+ /* TRANSLATORS: geom is the name of (k)FreeBSD device framework.
+ Usually left untranslated. "part" is the identifier of one of its
+ classes. */
+ grub_util_error ("%s", _("couldn't find geom `part' class"));
+
+ LIST_FOREACH (geom, &class->lg_geom, lg_geom)
+ {
+ struct gprovider *provider;
+ LIST_FOREACH (provider, &geom->lg_provider, lg_provider)
+ if (strcmp (provider->lg_name, name) == 0)
+ {
+ char *name_tmp = xstrdup (geom->lg_name);
+ grub_disk_addr_t off = 0;
+ struct gconfig *config;
+ grub_util_info ("geom '%s' has parent '%s'", name, geom->lg_name);
+
+ grub_util_follow_gpart_up (name_tmp, &off, name_out);
+ free (name_tmp);
+ LIST_FOREACH (config, &provider->lg_config, lg_config)
+ if (strcasecmp (config->lg_name, "offset") == 0)
+ off += strtoull (config->lg_val, 0, 10) / provider->lg_sectorsize;
+ if (off_out)
+ *off_out = off;
+ return;
+ }
+ }
+ grub_util_info ("geom '%s' has no parent", name);
+ if (name_out)
+ *name_out = xstrdup (name);
+ if (off_out)
+ *off_out = 0;
+}
+
+grub_disk_addr_t
+grub_util_find_partition_start_os (const char *dev)
+{
+ grub_disk_addr_t out;
+ if (strncmp (dev, "/dev/", sizeof ("/dev/") - 1) != 0)
+ return 0;
+ grub_util_follow_gpart_up (dev + sizeof ("/dev/") - 1, &out, NULL);
+
+ return out;
+}
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