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-rw-r--r--grub-core/osdep/linux/blocklist.c136
-rw-r--r--grub-core/osdep/linux/emunet.c74
-rw-r--r--grub-core/osdep/linux/getroot.c1164
-rw-r--r--grub-core/osdep/linux/hostdisk.c465
-rw-r--r--grub-core/osdep/linux/ofpath.c769
-rw-r--r--grub-core/osdep/linux/platform.c156
6 files changed, 2764 insertions, 0 deletions
diff --git a/grub-core/osdep/linux/blocklist.c b/grub-core/osdep/linux/blocklist.c
new file mode 100644
index 0000000..c77d608
--- /dev/null
+++ b/grub-core/osdep/linux/blocklist.c
@@ -0,0 +1,136 @@
+/* grub-setup.c - make GRUB usable */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011 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.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <assert.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/fiemap.h>
+
+#include <grub/disk.h>
+#include <grub/partition.h>
+#include <grub/util/misc.h>
+#include <grub/util/install.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+void
+grub_install_get_blocklist (grub_device_t root_dev,
+ const char *core_path,
+ const char *core_img __attribute__ ((unused)),
+ size_t core_size,
+ void (*callback) (grub_disk_addr_t sector,
+ unsigned offset,
+ unsigned length,
+ void *data),
+ void *hook_data)
+{
+ grub_partition_t container = root_dev->disk->partition;
+ grub_uint64_t container_start = grub_partition_get_start (container);
+ struct fiemap fie1;
+ int fd;
+
+ /* Write the first two sectors of the core image onto the disk. */
+ grub_util_info ("opening the core image `%s'", core_path);
+ fd = open (core_path, O_RDONLY);
+ if (fd < 0)
+ grub_util_error (_("cannot open `%s': %s"), core_path,
+ strerror (errno));
+
+ grub_memset (&fie1, 0, sizeof (fie1));
+ fie1.fm_length = core_size;
+ fie1.fm_flags = FIEMAP_FLAG_SYNC;
+
+ if (ioctl (fd, FS_IOC_FIEMAP, &fie1) < 0)
+ {
+ int nblocks, i;
+ int bsize;
+ int mul;
+
+ grub_util_info ("FIEMAP failed. Reverting to FIBMAP");
+
+ if (ioctl (fd, FIGETBSZ, &bsize) < 0)
+ grub_util_error (_("can't retrieve blocklists: %s"),
+ strerror (errno));
+ if (bsize & (GRUB_DISK_SECTOR_SIZE - 1))
+ grub_util_error ("%s", _("blocksize is not divisible by 512"));
+ if (!bsize)
+ grub_util_error ("%s", _("invalid zero blocksize"));
+ mul = bsize >> GRUB_DISK_SECTOR_BITS;
+ nblocks = (core_size + bsize - 1) / bsize;
+ if (mul == 0 || nblocks == 0)
+ grub_util_error ("%s", _("can't retrieve blocklists"));
+ for (i = 0; i < nblocks; i++)
+ {
+ unsigned blk = i;
+ int rest;
+ if (ioctl (fd, FIBMAP, &blk) < 0)
+ grub_util_error (_("can't retrieve blocklists: %s"),
+ strerror (errno));
+
+ rest = core_size - ((i * mul) << GRUB_DISK_SECTOR_BITS);
+ if (rest <= 0)
+ break;
+ if (rest > GRUB_DISK_SECTOR_SIZE * mul)
+ rest = GRUB_DISK_SECTOR_SIZE * mul;
+ callback (((grub_uint64_t) blk) * mul
+ + container_start,
+ 0, rest, hook_data);
+ }
+ }
+ else
+ {
+ struct fiemap *fie2;
+ int i;
+ fie2 = xmalloc (sizeof (*fie2)
+ + fie1.fm_mapped_extents
+ * sizeof (fie1.fm_extents[1]));
+ memset (fie2, 0, sizeof (*fie2)
+ + fie1.fm_mapped_extents * sizeof (fie2->fm_extents[1]));
+ fie2->fm_length = core_size;
+ fie2->fm_flags = FIEMAP_FLAG_SYNC;
+ fie2->fm_extent_count = fie1.fm_mapped_extents;
+ if (ioctl (fd, FS_IOC_FIEMAP, fie2) < 0)
+ grub_util_error (_("can't retrieve blocklists: %s"),
+ strerror (errno));
+ for (i = 0; i < fie2->fm_mapped_extents; i++)
+ {
+ callback ((fie2->fm_extents[i].fe_physical
+ >> GRUB_DISK_SECTOR_BITS)
+ + container_start,
+ fie2->fm_extents[i].fe_physical
+ & (GRUB_DISK_SECTOR_SIZE - 1),
+ fie2->fm_extents[i].fe_length, hook_data);
+ }
+ free (fie2);
+ }
+ close (fd);
+}
diff --git a/grub-core/osdep/linux/emunet.c b/grub-core/osdep/linux/emunet.c
new file mode 100644
index 0000000..19b188f
--- /dev/null
+++ b/grub-core/osdep/linux/emunet.c
@@ -0,0 +1,74 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 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.h>
+#include <config-util.h>
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <grub/emu/net.h>
+
+static int fd;
+
+grub_ssize_t
+grub_emunet_send (const void *packet, grub_size_t sz)
+{
+ return write (fd, packet, sz);
+}
+
+grub_ssize_t
+grub_emunet_receive (void *packet, grub_size_t sz)
+{
+ return read (fd, packet, sz);
+}
+
+int
+grub_emunet_create (grub_size_t *mtu)
+{
+ struct ifreq ifr;
+ *mtu = 1500;
+ fd = open ("/dev/net/tun", O_RDWR | O_NONBLOCK);
+ if (fd < 0)
+ return -1;
+ memset (&ifr, 0, sizeof (ifr));
+ ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+ if (ioctl (fd, TUNSETIFF, &ifr) < 0)
+ {
+ close (fd);
+ fd = -1;
+ return -1;
+ }
+ return 0;
+}
+
+void
+grub_emunet_close (void)
+{
+ if (fd < 0)
+ return;
+
+ close (fd);
+ fd = -1;
+}
diff --git a/grub-core/osdep/linux/getroot.c b/grub-core/osdep/linux/getroot.c
new file mode 100644
index 0000000..001b818
--- /dev/null
+++ b/grub-core/osdep/linux/getroot.c
@@ -0,0 +1,1164 @@
+/*
+ * 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
+
+#if defined(MAJOR_IN_MKDEV)
+#include <sys/mkdev.h>
+#elif defined(MAJOR_IN_SYSMACROS)
+#include <sys/sysmacros.h>
+#endif
+
+#include <grub/types.h>
+#include <sys/ioctl.h> /* ioctl */
+#include <sys/mount.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 <sys/wait.h>
+
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/raid/md_p.h>
+#include <linux/raid/md_u.h>
+#include <grub/i18n.h>
+#include <grub/emu/exec.h>
+#include <grub/btrfs.h>
+
+#define LVM_DEV_MAPPER_STRING "/dev/mapper/"
+
+/* Defines taken from btrfs/ioctl.h. */
+
+struct btrfs_ioctl_dev_info_args
+{
+ grub_uint64_t devid;
+ grub_uint8_t uuid[16];
+ grub_uint64_t bytes_used;
+ grub_uint64_t total_bytes;
+ grub_uint64_t unused[379];
+ grub_uint8_t path[1024];
+};
+
+struct btrfs_ioctl_fs_info_args
+{
+ grub_uint64_t max_id;
+ grub_uint64_t num_devices;
+ grub_uint8_t fsid[16];
+ grub_uint64_t reserved[124];
+};
+
+struct btrfs_ioctl_ino_lookup_args
+{
+ grub_uint64_t treeid;
+ grub_uint64_t objectid;
+ char name[4080];
+};
+
+struct btrfs_ioctl_search_key
+{
+ grub_uint64_t tree_id;
+ grub_uint64_t min_objectid;
+ grub_uint64_t max_objectid;
+ grub_uint64_t min_offset;
+ grub_uint64_t max_offset;
+ grub_uint64_t min_transid;
+ grub_uint64_t max_transid;
+ grub_uint32_t min_type;
+ grub_uint32_t max_type;
+ grub_uint32_t nr_items;
+ grub_uint32_t unused[9];
+};
+
+struct btrfs_ioctl_search_args {
+ struct btrfs_ioctl_search_key key;
+ grub_uint64_t buf[(4096 - sizeof(struct btrfs_ioctl_search_key))
+ / sizeof (grub_uint64_t)];
+};
+
+#define BTRFS_IOC_TREE_SEARCH _IOWR(0x94, 17, \
+ struct btrfs_ioctl_search_args)
+#define BTRFS_IOC_INO_LOOKUP _IOWR(0x94, 18, \
+ struct btrfs_ioctl_ino_lookup_args)
+#define BTRFS_IOC_DEV_INFO _IOWR(0x94, 30, \
+ struct btrfs_ioctl_dev_info_args)
+#define BTRFS_IOC_FS_INFO _IOR(0x94, 31, \
+ struct btrfs_ioctl_fs_info_args)
+
+static int
+grub_util_is_imsm (const char *os_dev);
+
+
+#define ESCAPED_PATH_MAX (4 * PATH_MAX)
+struct mountinfo_entry
+{
+ int id;
+ int major, minor;
+ char enc_root[ESCAPED_PATH_MAX + 1], enc_path[ESCAPED_PATH_MAX + 1];
+ char fstype[ESCAPED_PATH_MAX + 1], device[ESCAPED_PATH_MAX + 1];
+};
+
+static char **
+grub_util_raid_getmembers (const char *name, int bootable)
+{
+ int fd, ret, i, j;
+ char **devicelist;
+ mdu_version_t version;
+ mdu_array_info_t info;
+ mdu_disk_info_t disk;
+
+ fd = open (name, O_RDONLY);
+
+ if (fd == -1)
+ grub_util_error (_("cannot open `%s': %s"), name, strerror (errno));
+
+ ret = ioctl (fd, RAID_VERSION, &version);
+ if (ret != 0)
+ grub_util_error (_("ioctl RAID_VERSION error: %s"), strerror (errno));
+
+ if ((version.major != 0 || version.minor != 90)
+ && (version.major != 1 || version.minor != 0)
+ && (version.major != 1 || version.minor != 1)
+ && (version.major != 1 || version.minor != 2))
+ grub_util_error (_("unsupported RAID version: %d.%d"),
+ version.major, version.minor);
+
+ if (bootable && (version.major != 0 || version.minor != 90))
+ grub_util_error (_("unsupported RAID version: %d.%d"),
+ version.major, version.minor);
+
+ ret = ioctl (fd, GET_ARRAY_INFO, &info);
+ if (ret != 0)
+ grub_util_error (_("ioctl GET_ARRAY_INFO error: %s"), strerror (errno));
+
+ devicelist = xcalloc (info.nr_disks + 1, sizeof (char *));
+
+ for (i = 0, j = 0; j < info.nr_disks; i++)
+ {
+ disk.number = i;
+ ret = ioctl (fd, GET_DISK_INFO, &disk);
+ if (ret != 0)
+ grub_util_error (_("ioctl GET_DISK_INFO error: %s"), strerror (errno));
+
+ if (disk.state & (1 << MD_DISK_REMOVED))
+ continue;
+
+ if (disk.state & (1 << MD_DISK_ACTIVE))
+ devicelist[j] = grub_find_device (NULL,
+ makedev (disk.major, disk.minor));
+ else
+ devicelist[j] = NULL;
+ j++;
+ }
+
+ devicelist[j] = NULL;
+
+ close (fd);
+
+ return devicelist;
+}
+
+/* Statting something on a btrfs filesystem always returns a virtual device
+ major/minor pair rather than the real underlying device, because btrfs
+ can span multiple underlying devices (and even if it's currently only
+ using a single device it can be dynamically extended onto another). We
+ can't deal with the multiple-device case yet, but in the meantime, we can
+ at least cope with the single-device case by scanning
+ /proc/self/mountinfo. */
+static void
+unescape (char *str)
+{
+ char *optr;
+ const char *iptr;
+ for (iptr = optr = str; *iptr; optr++)
+ {
+ if (iptr[0] == '\\' && iptr[1] >= '0' && iptr[1] < '8'
+ && iptr[2] >= '0' && iptr[2] < '8'
+ && iptr[3] >= '0' && iptr[3] < '8')
+ {
+ *optr = (((iptr[1] - '0') << 6) | ((iptr[2] - '0') << 3)
+ | (iptr[3] - '0'));
+ iptr += 4;
+ }
+ else
+ *optr = *iptr++;
+ }
+ *optr = 0;
+}
+
+static char **
+grub_find_root_devices_from_btrfs (const char *dir)
+{
+ int fd;
+ struct btrfs_ioctl_fs_info_args fsi;
+ int i, j = 0;
+ char **ret;
+
+ fd = open (dir, 0);
+ if (fd < 0)
+ return NULL;
+
+ if (ioctl (fd, BTRFS_IOC_FS_INFO, &fsi) < 0)
+ {
+ close (fd);
+ return NULL;
+ }
+
+ ret = xcalloc (fsi.num_devices + 1, sizeof (ret[0]));
+
+ for (i = 1; i <= fsi.max_id && j < fsi.num_devices; i++)
+ {
+ struct btrfs_ioctl_dev_info_args devi;
+ memset (&devi, 0, sizeof (devi));
+ devi.devid = i;
+ if (ioctl (fd, BTRFS_IOC_DEV_INFO, &devi) < 0)
+ {
+ close (fd);
+ free (ret);
+ return NULL;
+ }
+ ret[j++] = xstrdup ((char *) devi.path);
+ if (j >= fsi.num_devices)
+ break;
+ }
+ close (fd);
+ ret[j] = 0;
+ return ret;
+}
+
+static char *
+get_btrfs_fs_prefix (const char *mount_path)
+{
+ struct btrfs_ioctl_ino_lookup_args args;
+ struct stat st;
+ int fd;
+ grub_uint64_t tree_id, inode_id;
+ char *ret = NULL;
+
+ fd = open (mount_path, O_RDONLY);
+
+ if (fd < 0)
+ return NULL;
+ memset (&args, 0, sizeof(args));
+ args.objectid = GRUB_BTRFS_TREE_ROOT_OBJECTID;
+
+ if (ioctl (fd, BTRFS_IOC_INO_LOOKUP, &args) < 0)
+ goto fail;
+ tree_id = args.treeid;
+
+ if (fstat (fd, &st) < 0)
+ goto fail;
+ inode_id = st.st_ino;
+
+ while (tree_id != GRUB_BTRFS_ROOT_VOL_OBJECTID
+ || inode_id != GRUB_BTRFS_TREE_ROOT_OBJECTID)
+ {
+ const char *name;
+ size_t namelen;
+ struct btrfs_ioctl_search_args sargs;
+ char *old;
+
+ memset (&sargs, 0, sizeof(sargs));
+
+ if (inode_id == GRUB_BTRFS_TREE_ROOT_OBJECTID)
+ {
+ struct grub_btrfs_root_backref *br;
+
+ sargs.key.tree_id = 1;
+ sargs.key.min_objectid = tree_id;
+ sargs.key.max_objectid = tree_id;
+
+ sargs.key.min_offset = 0;
+ sargs.key.max_offset = ~0ULL;
+ sargs.key.min_transid = 0;
+ sargs.key.max_transid = ~0ULL;
+ sargs.key.min_type = GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF;
+ sargs.key.max_type = GRUB_BTRFS_ITEM_TYPE_ROOT_BACKREF;
+
+ sargs.key.nr_items = 1;
+
+ if (ioctl (fd, BTRFS_IOC_TREE_SEARCH, &sargs) < 0)
+ goto fail;
+
+ if (sargs.key.nr_items == 0)
+ goto fail;
+
+ tree_id = sargs.buf[2];
+ br = (struct grub_btrfs_root_backref *) (sargs.buf + 4);
+ inode_id = grub_le_to_cpu64 (br->inode_id);
+ name = br->name;
+ namelen = grub_le_to_cpu16 (br->n);
+ }
+ else
+ {
+ struct grub_btrfs_inode_ref *ir;
+
+ sargs.key.tree_id = tree_id;
+ sargs.key.min_objectid = inode_id;
+ sargs.key.max_objectid = inode_id;
+
+ sargs.key.min_offset = 0;
+ sargs.key.max_offset = ~0ULL;
+ sargs.key.min_transid = 0;
+ sargs.key.max_transid = ~0ULL;
+ sargs.key.min_type = GRUB_BTRFS_ITEM_TYPE_INODE_REF;
+ sargs.key.max_type = GRUB_BTRFS_ITEM_TYPE_INODE_REF;
+
+ if (ioctl (fd, BTRFS_IOC_TREE_SEARCH, &sargs) < 0)
+ goto fail;
+
+ if (sargs.key.nr_items == 0)
+ goto fail;
+
+ inode_id = sargs.buf[2];
+
+ ir = (struct grub_btrfs_inode_ref *) (sargs.buf + 4);
+ name = ir->name;
+ namelen = grub_le_to_cpu16 (ir->n);
+ }
+ old = ret;
+ ret = xmalloc (namelen + (old ? strlen (old) : 0) + 2);
+ ret[0] = '/';
+ memcpy (ret + 1, name, namelen);
+ if (old)
+ {
+ strcpy (ret + 1 + namelen, old);
+ free (old);
+ }
+ else
+ ret[1+namelen] = '\0';
+ }
+ if (!ret)
+ ret = xstrdup ("/");
+ close (fd);
+ return ret;
+
+ fail:
+ free (ret);
+ close (fd);
+ return NULL;
+}
+
+
+char **
+grub_find_root_devices_from_mountinfo (const char *dir, char **relroot)
+{
+ FILE *fp = NULL;
+ char *buf = NULL;
+ size_t len = 0;
+ grub_size_t entry_len, entry_max = 4;
+ struct mountinfo_entry *entries;
+ struct mountinfo_entry parent_entry = { 0, 0, 0, "", "", "", "" };
+ int i;
+ int retry = 0;
+ int dir_fd = -1;
+ char **ret = NULL;
+
+ if (! *dir)
+ dir = "/";
+ if (relroot)
+ *relroot = NULL;
+
+ entries = xcalloc (entry_max, sizeof (*entries));
+
+again:
+ fp = grub_util_fopen ("/proc/self/mountinfo", "r");
+ if (! fp)
+ goto out; /* fall through to other methods */
+
+ entry_len = 0;
+
+ /* First, build a list of relevant visible mounts. */
+ while (getline (&buf, &len, fp) > 0)
+ {
+ struct mountinfo_entry entry;
+ int count;
+ size_t enc_path_len;
+ const char *sep;
+
+ if (sscanf (buf, "%d %d %u:%u %s %s%n",
+ &entry.id, &parent_entry.id, &entry.major, &entry.minor,
+ entry.enc_root, entry.enc_path, &count) < 6)
+ continue;
+
+ unescape (entry.enc_root);
+ unescape (entry.enc_path);
+
+ enc_path_len = strlen (entry.enc_path);
+ /* Check that enc_path is a prefix of dir. The prefix must either be
+ the entire string, or end with a slash, or be immediately followed
+ by a slash. */
+ if (strncmp (dir, entry.enc_path, enc_path_len) != 0 ||
+ (enc_path_len && dir[enc_path_len - 1] != '/' &&
+ dir[enc_path_len] && dir[enc_path_len] != '/'))
+ continue;
+
+ sep = strstr (buf + count, " - ");
+ if (!sep)
+ continue;
+
+ sep += sizeof (" - ") - 1;
+ if (sscanf (sep, "%s %s", entry.fstype, entry.device) != 2)
+ continue;
+
+ unescape (entry.device);
+
+ /* Using the mount IDs, find out where this fits in the list of
+ visible mount entries we've seen so far. There are three
+ interesting cases. Firstly, it may be inserted at the end: this is
+ the usual case of /foo/bar being mounted after /foo. Secondly, it
+ may be inserted at the start: for example, this can happen for
+ filesystems that are mounted before / and later moved under it.
+ Thirdly, it may occlude part or all of the existing filesystem
+ tree, in which case the end of the list needs to be pruned and this
+ new entry will be inserted at the end. */
+ if (entry_len >= entry_max)
+ {
+ entry_max <<= 1;
+ entries = xrealloc (entries, entry_max * sizeof (*entries));
+ }
+
+ if (!entry_len)
+ {
+ /* Initialise list. */
+ entry_len = 2;
+ entries[0] = parent_entry;
+ entries[1] = entry;
+ }
+ else
+ {
+ for (i = entry_len - 1; i >= 0; i--)
+ {
+ if (entries[i].id == parent_entry.id)
+ {
+ /* Insert at end, pruning anything previously above this. */
+ entry_len = i + 2;
+ entries[i + 1] = entry;
+ break;
+ }
+ else if (i == 0 && entries[i].id == entry.id)
+ {
+ /* Insert at start. */
+ entry_len++;
+ memmove (entries + 1, entries,
+ (entry_len - 1) * sizeof (*entries));
+ entries[0] = parent_entry;
+ entries[1] = entry;
+ break;
+ }
+ }
+ }
+ }
+
+ /* Now scan visible mounts for the ones we're interested in. */
+ for (i = entry_len - 1; i >= 0; i--)
+ {
+ char *fs_prefix = NULL;
+ if (!*entries[i].device)
+ continue;
+
+ if (grub_strcmp (entries[i].fstype, "fuse.zfs") == 0
+ || grub_strcmp (entries[i].fstype, "zfs") == 0)
+ {
+ char *slash;
+ slash = strchr (entries[i].device, '/');
+ if (slash)
+ *slash = 0;
+ ret = grub_util_find_root_devices_from_poolname (entries[i].device);
+ if (slash)
+ *slash = '/';
+ if (relroot)
+ {
+ if (!slash)
+ fs_prefix = xasprintf ("/@%s", entries[i].enc_root);
+ else if (strchr (slash + 1, '@'))
+ fs_prefix = xasprintf ("/%s%s", slash + 1, entries[i].enc_root);
+ else
+ fs_prefix = xasprintf ("/%s@%s", slash + 1,
+ entries[i].enc_root);
+ }
+ }
+ else if (grub_strcmp (entries[i].fstype, "btrfs") == 0)
+ {
+ ret = grub_find_root_devices_from_btrfs (dir);
+ fs_prefix = get_btrfs_fs_prefix (entries[i].enc_path);
+ }
+ else if (!retry && grub_strcmp (entries[i].fstype, "autofs") == 0)
+ {
+ /* If the best match is automounted, try to trigger mount. We cannot
+ simply return here because stat() on automounted directory does not
+ trigger mount and returns bogus (pseudo)device number instead.
+ We keep mountpoint open until end of scan to prevent timeout. */
+
+ int flags = O_RDONLY|O_DIRECTORY;
+
+ fclose (fp);
+#ifdef O_LARGEFILE
+ flags |= O_LARGEFILE;
+#endif
+ dir_fd = open (entries[i].enc_path, flags);
+ retry = 1;
+ goto again;
+ }
+ if (!ret)
+ {
+ ret = xmalloc (2 * sizeof (ret[0]));
+ ret[0] = strdup (entries[i].device);
+ ret[1] = 0;
+ }
+ if (!fs_prefix)
+ fs_prefix = entries[i].enc_root;
+ if (relroot)
+ {
+ char *ptr;
+ grub_size_t enc_root_len = strlen (fs_prefix);
+ grub_size_t enc_path_len = strlen (entries[i].enc_path);
+ grub_size_t dir_strlen = strlen (dir);
+ *relroot = xmalloc (enc_root_len +
+ 2 + dir_strlen);
+ ptr = grub_stpcpy (*relroot, fs_prefix);
+ if (dir_strlen > enc_path_len)
+ {
+ while (ptr > *relroot && *(ptr - 1) == '/')
+ ptr--;
+ if (dir[enc_path_len] != '/')
+ *ptr++ = '/';
+ ptr = grub_stpcpy (ptr, dir + enc_path_len);
+ }
+ *ptr = 0;
+ }
+ if (fs_prefix != entries[i].enc_root)
+ free (fs_prefix);
+ break;
+ }
+
+out:
+ free (buf);
+ free (entries);
+ if (fp)
+ fclose (fp);
+ if (dir_fd != -1)
+ close (dir_fd);
+ return ret;
+}
+
+static char *
+get_mdadm_uuid (const char *os_dev)
+{
+ const char *argv[5];
+ int fd;
+ pid_t pid;
+ FILE *mdadm;
+ char *buf = NULL;
+ size_t len = 0;
+ char *name = NULL;
+
+ argv[0] = "mdadm";
+ argv[1] = "--detail";
+ argv[2] = "--export";
+ argv[3] = os_dev;
+ argv[4] = NULL;
+
+ pid = grub_util_exec_pipe (argv, &fd);
+
+ if (!pid)
+ return NULL;
+
+ /* Parent. Read mdadm's output. */
+ mdadm = fdopen (fd, "r");
+ if (! mdadm)
+ {
+ grub_util_warn (_("Unable to open stream from %s: %s"),
+ "mdadm", strerror (errno));
+ goto out;
+ }
+
+ while (getline (&buf, &len, mdadm) > 0)
+ {
+ if (strncmp (buf, "MD_UUID=", sizeof ("MD_UUID=") - 1) == 0)
+ {
+ char *name_start, *ptri, *ptro;
+
+ free (name);
+ name_start = buf + sizeof ("MD_UUID=") - 1;
+ ptro = name = xmalloc (strlen (name_start) + 1);
+ for (ptri = name_start; *ptri && *ptri != '\n' && *ptri != '\r';
+ ptri++)
+ if ((*ptri >= '0' && *ptri <= '9')
+ || (*ptri >= 'a' && *ptri <= 'f')
+ || (*ptri >= 'A' && *ptri <= 'F'))
+ *ptro++ = *ptri;
+ *ptro = 0;
+ }
+ }
+
+out:
+ close (fd);
+ waitpid (pid, NULL, 0);
+ free (buf);
+
+ return name;
+}
+
+static int
+grub_util_is_imsm (const char *os_dev)
+{
+ int retry;
+ int is_imsm = 0;
+ int container_seen = 0;
+ const char *dev = os_dev;
+
+ do
+ {
+ const char *argv[5];
+ int fd;
+ pid_t pid;
+ FILE *mdadm;
+ char *buf = NULL;
+ size_t len = 0;
+
+ retry = 0; /* We'll do one more pass if device is part of container */
+
+ argv[0] = "mdadm";
+ argv[1] = "--detail";
+ argv[2] = "--export";
+ argv[3] = dev;
+ argv[4] = NULL;
+
+ pid = grub_util_exec_pipe (argv, &fd);
+
+ if (!pid)
+ {
+ if (dev != os_dev)
+ free ((void *) dev);
+ return 0;
+ }
+
+ /* Parent. Read mdadm's output. */
+ mdadm = fdopen (fd, "r");
+ if (! mdadm)
+ {
+ grub_util_warn (_("Unable to open stream from %s: %s"),
+ "mdadm", strerror (errno));
+ close (fd);
+ waitpid (pid, NULL, 0);
+ if (dev != os_dev)
+ free ((void *) dev);
+ return 0;
+ }
+
+ while (getline (&buf, &len, mdadm) > 0)
+ {
+ if (strncmp (buf, "MD_CONTAINER=", sizeof ("MD_CONTAINER=") - 1) == 0
+ && !container_seen)
+ {
+ char *newdev, *ptr;
+ newdev = xstrdup (buf + sizeof ("MD_CONTAINER=") - 1);
+ ptr = newdev + strlen (newdev) - 1;
+ for (; ptr >= newdev && (*ptr == '\n' || *ptr == '\r'); ptr--);
+ ptr[1] = 0;
+ grub_util_info ("Container of %s is %s", dev, newdev);
+ dev = newdev;
+ container_seen = retry = 1;
+ break;
+ }
+ if (strncmp (buf, "MD_METADATA=imsm",
+ sizeof ("MD_METADATA=imsm") - 1) == 0)
+ {
+ is_imsm = 1;
+ grub_util_info ("%s is imsm", dev);
+ break;
+ }
+ }
+
+ free (buf);
+ close (fd);
+ waitpid (pid, NULL, 0);
+ }
+ while (retry);
+
+ if (dev != os_dev)
+ free ((void *) dev);
+ return is_imsm;
+}
+
+char *
+grub_util_part_to_disk (const char *os_dev, struct stat *st,
+ int *is_part)
+{
+ char *path;
+
+ if (! S_ISBLK (st->st_mode))
+ {
+ *is_part = 0;
+ return xstrdup (os_dev);
+ }
+
+ path = xmalloc (PATH_MAX);
+
+ if (! realpath (os_dev, path))
+ return NULL;
+
+ if (strncmp ("/dev/", path, 5) == 0)
+ {
+ char *p = path + 5;
+
+ /* If this is an IDE disk. */
+ if (strncmp ("ide/", p, 4) == 0)
+ {
+ p = strstr (p, "part");
+ if (p)
+ {
+ *is_part = 1;
+ strcpy (p, "disc");
+ }
+
+ return path;
+ }
+
+ /* If this is a SCSI disk. */
+ if (strncmp ("scsi/", p, 5) == 0)
+ {
+ p = strstr (p, "part");
+ if (p)
+ {
+ *is_part = 1;
+ strcpy (p, "disc");
+ }
+
+ return path;
+ }
+
+ /* If this is a DAC960 disk. */
+ if (strncmp ("rd/c", p, 4) == 0)
+ {
+ /* /dev/rd/c[0-9]+d[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+
+ /* If this is a Mylex AcceleRAID Array. */
+ if (strncmp ("rs/c", p, 4) == 0)
+ {
+ /* /dev/rd/c[0-9]+d[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+ /* If this is a CCISS disk. */
+ if (strncmp ("cciss/c", p, sizeof ("cciss/c") - 1) == 0)
+ {
+ /* /dev/cciss/c[0-9]+d[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+
+ /* If this is an AOE disk. */
+ if (strncmp ("etherd/e", p, sizeof ("etherd/e") - 1) == 0)
+ {
+ /* /dev/etherd/e[0-9]+\.[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+
+ /* If this is a Compaq Intelligent Drive Array. */
+ if (strncmp ("ida/c", p, sizeof ("ida/c") - 1) == 0)
+ {
+ /* /dev/ida/c[0-9]+d[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+
+ /* If this is an I2O disk. */
+ if (strncmp ("i2o/hd", p, sizeof ("i2o/hd") - 1) == 0)
+ {
+ /* /dev/i2o/hd[a-z]([0-9]+)? */
+ if (p[sizeof ("i2o/hda") - 1])
+ *is_part = 1;
+ p[sizeof ("i2o/hda") - 1] = '\0';
+ return path;
+ }
+
+ /* If this is a MultiMediaCard (MMC). */
+ if (strncmp ("mmcblk", p, sizeof ("mmcblk") - 1) == 0)
+ {
+ /* /dev/mmcblk[0-9]+(p[0-9]+)? */
+ p = strchr (p, 'p');
+ if (p)
+ {
+ *is_part = 1;
+ *p = '\0';
+ }
+
+ return path;
+ }
+
+ if (strncmp ("md", p, 2) == 0
+ && p[2] >= '0' && p[2] <= '9')
+ {
+ char *ptr = p + 2;
+ while (*ptr >= '0' && *ptr <= '9')
+ ptr++;
+ if (*ptr)
+ *is_part = 1;
+ *ptr = 0;
+ return path;
+ }
+
+ if (strncmp ("nbd", p, 3) == 0
+ && p[3] >= '0' && p[3] <= '9')
+ {
+ char *ptr = p + 3;
+ while (*ptr >= '0' && *ptr <= '9')
+ ptr++;
+ if (*ptr)
+ *is_part = 1;
+ *ptr = 0;
+ return path;
+ }
+
+ /* If this is an IDE, SCSI or Virtio disk. */
+ if (strncmp ("vdisk", p, 5) == 0
+ && p[5] >= 'a' && p[5] <= 'z')
+ {
+ /* /dev/vdisk[a-z][0-9]* */
+ if (p[6])
+ *is_part = 1;
+ p[6] = '\0';
+ return path;
+ }
+ if ((strncmp ("hd", p, 2) == 0
+ || strncmp ("vd", p, 2) == 0
+ || strncmp ("sd", p, 2) == 0)
+ && p[2] >= 'a' && p[2] <= 'z')
+ {
+ char *pp = p + 2;
+ while (*pp >= 'a' && *pp <= 'z')
+ pp++;
+ if (*pp)
+ *is_part = 1;
+ /* /dev/[hsv]d[a-z]+[0-9]* */
+ *pp = '\0';
+ return path;
+ }
+
+ /* If this is a Xen virtual block device. */
+ if ((strncmp ("xvd", p, 3) == 0) && p[3] >= 'a' && p[3] <= 'z')
+ {
+ char *pp = p + 3;
+ while (*pp >= 'a' && *pp <= 'z')
+ pp++;
+ if (*pp)
+ *is_part = 1;
+ /* /dev/xvd[a-z]+[0-9]* */
+ *pp = '\0';
+ return path;
+ }
+
+ /* If this is an rssd device. */
+ if ((strncmp ("rssd", p, 4) == 0) && p[4] >= 'a' && p[4] <= 'z')
+ {
+ char *pp = p + 4;
+ while (*pp >= 'a' && *pp <= 'z')
+ pp++;
+ if (*pp)
+ *is_part = 1;
+ /* /dev/rssd[a-z]+[0-9]* */
+ *pp = '\0';
+ return path;
+ }
+
+ /* If this is a loop device */
+ if ((strncmp ("loop", p, 4) == 0) && p[4] >= '0' && p[4] <= '9')
+ {
+ char *pp = p + 4;
+ while (*pp >= '0' && *pp <= '9')
+ pp++;
+ if (*pp == 'p')
+ *is_part = 1;
+ /* /dev/loop[0-9]+p[0-9]* */
+ *pp = '\0';
+ return path;
+ }
+
+ /* If this is a NVMe device */
+ if ((strncmp ("nvme", p, 4) == 0) && p[4] >= '0' && p[4] <= '9')
+ {
+ char *pp = p + 4;
+ while (*pp >= '0' && *pp <= '9')
+ pp++;
+ if (*pp == 'n')
+ pp++;
+ while (*pp >= '0' && *pp <= '9')
+ pp++;
+ if (*pp == 'p')
+ *is_part = 1;
+ /* /dev/nvme[0-9]+n[0-9]+p[0-9]* */
+ *pp = '\0';
+ return path;
+ }
+ }
+
+ return path;
+}
+
+static char *
+grub_util_get_raid_grub_dev (const char *os_dev)
+{
+ char *grub_dev = NULL;
+ if (os_dev[7] == '_' && os_dev[8] == 'd')
+ {
+ /* This a partitionable RAID device of the form /dev/md_dNNpMM. */
+
+ char *p, *q;
+
+ p = strdup (os_dev + sizeof ("/dev/md_d") - 1);
+
+ q = strchr (p, 'p');
+ if (q)
+ *q = ',';
+
+ grub_dev = xasprintf ("md%s", p);
+ free (p);
+ }
+ else if (os_dev[7] == '/' && os_dev[8] == 'd')
+ {
+ /* This a partitionable RAID device of the form /dev/md/dNNpMM. */
+
+ char *p, *q;
+
+ p = strdup (os_dev + sizeof ("/dev/md/d") - 1);
+
+ q = strchr (p, 'p');
+ if (q)
+ *q = ',';
+
+ grub_dev = xasprintf ("md%s", p);
+ free (p);
+ }
+ else if (os_dev[7] >= '0' && os_dev[7] <= '9')
+ {
+ char *p , *q;
+
+ p = strdup (os_dev + sizeof ("/dev/md") - 1);
+
+ q = strchr (p, 'p');
+ if (q)
+ *q = ',';
+
+ grub_dev = xasprintf ("md%s", p);
+ free (p);
+ }
+ else if (os_dev[7] == '/' && os_dev[8] >= '0' && os_dev[8] <= '9')
+ {
+ char *p , *q;
+
+ p = strdup (os_dev + sizeof ("/dev/md/") - 1);
+
+ q = strchr (p, 'p');
+ if (q)
+ *q = ',';
+
+ grub_dev = xasprintf ("md%s", p);
+ free (p);
+ }
+ else if (os_dev[7] == '/')
+ {
+ /* mdraid 1.x with a free name. */
+ char *p , *q;
+
+ p = strdup (os_dev + sizeof ("/dev/md/") - 1);
+
+ q = strchr (p, 'p');
+ if (q)
+ *q = ',';
+
+ grub_dev = xasprintf ("md/%s", p);
+ free (p);
+ }
+ else
+ grub_util_error (_("unknown kind of RAID device `%s'"), os_dev);
+
+ {
+ char *mdadm_name = get_mdadm_uuid (os_dev);
+
+ if (mdadm_name)
+ {
+ const char *q;
+
+ for (q = os_dev + strlen (os_dev) - 1; q >= os_dev
+ && grub_isdigit (*q); q--);
+
+ if (q >= os_dev && *q == 'p')
+ {
+ free (grub_dev);
+ grub_dev = xasprintf ("mduuid/%s,%s", mdadm_name, q + 1);
+ goto done;
+ }
+ free (grub_dev);
+ grub_dev = xasprintf ("mduuid/%s", mdadm_name);
+
+ done:
+ free (mdadm_name);
+ }
+ }
+ return grub_dev;
+}
+
+enum grub_dev_abstraction_types
+grub_util_get_dev_abstraction_os (const char *os_dev)
+{
+#ifndef HAVE_DEVICE_MAPPER
+ if ((strncmp ("/dev/mapper/", os_dev, 12) == 0))
+ return GRUB_DEV_ABSTRACTION_LVM;
+#endif
+
+ /* Check for RAID. */
+ if (!strncmp (os_dev, "/dev/md", 7) && ! grub_util_device_is_mapped (os_dev)
+ && !grub_util_is_imsm (os_dev))
+ return GRUB_DEV_ABSTRACTION_RAID;
+ return GRUB_DEV_ABSTRACTION_NONE;
+}
+
+int
+grub_util_pull_device_os (const char *os_dev,
+ enum grub_dev_abstraction_types ab)
+{
+ switch (ab)
+ {
+ case GRUB_DEV_ABSTRACTION_RAID:
+ {
+ char **devicelist = grub_util_raid_getmembers (os_dev, 0);
+ int i;
+ for (i = 0; devicelist[i];i++)
+ {
+ grub_util_pull_device (devicelist[i]);
+ free (devicelist[i]);
+ }
+ free (devicelist);
+ }
+ 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 grub_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_RAID:
+ grub_dev = grub_util_get_raid_grub_dev (os_dev);
+ break;
+
+ default: /* GRUB_DEV_ABSTRACTION_NONE */
+ break;
+ }
+
+ return grub_dev;
+}
+
+char *
+grub_make_system_path_relative_to_its_root_os (const char *path)
+{
+ char *bind = NULL;
+ grub_size_t len;
+ grub_free (grub_find_root_devices_from_mountinfo (path, &bind));
+ if (bind && bind[0])
+ {
+ len = strlen (bind);
+ while (len > 0 && bind[len - 1] == '/')
+ {
+ bind[len - 1] = '\0';
+ len--;
+ }
+ return bind;
+ }
+ grub_free (bind);
+ return NULL;
+}
diff --git a/grub-core/osdep/linux/hostdisk.c b/grub-core/osdep/linux/hostdisk.c
new file mode 100644
index 0000000..da62f92
--- /dev/null
+++ b/grub-core/osdep/linux/hostdisk.c
@@ -0,0 +1,465 @@
+/* hostdisk.c - emulate biosdisk */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004,2006,2007,2008,2009,2010,2011,2012,2013 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 <grub/disk.h>
+#include <grub/partition.h>
+#include <grub/msdos_partition.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/emu/misc.h>
+#include <grub/emu/hostdisk.h>
+#include <grub/emu/getroot.h>
+#include <grub/emu/exec.h>
+#include <grub/misc.h>
+#include <grub/i18n.h>
+#include <grub/list.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <limits.h>
+
+# include <sys/ioctl.h> /* ioctl */
+# include <sys/mount.h>
+# ifndef BLKFLSBUF
+# define BLKFLSBUF _IO (0x12,97) /* flush buffer cache */
+# endif /* ! BLKFLSBUF */
+# include <sys/ioctl.h> /* ioctl */
+# ifndef HDIO_GETGEO
+# define HDIO_GETGEO 0x0301 /* get device geometry */
+/* If HDIO_GETGEO is not defined, it is unlikely that hd_geometry is
+ defined. */
+struct hd_geometry
+{
+ unsigned char heads;
+ unsigned char sectors;
+ unsigned short cylinders;
+ unsigned long start;
+};
+# endif /* ! HDIO_GETGEO */
+# ifndef BLKGETSIZE64
+# define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size */
+# endif /* ! BLKGETSIZE64 */
+
+
+grub_int64_t
+grub_util_get_fd_size_os (grub_util_fd_t fd, const char *name, unsigned *log_secsize)
+{
+ unsigned long long nr;
+ unsigned sector_size, log_sector_size;
+
+ if (ioctl (fd, BLKGETSIZE64, &nr))
+ return -1;
+
+ if (ioctl (fd, BLKSSZGET, &sector_size))
+ return -1;
+
+ if (sector_size & (sector_size - 1) || !sector_size)
+ return -1;
+ for (log_sector_size = 0;
+ (1 << log_sector_size) < sector_size;
+ log_sector_size++);
+
+ if (log_secsize)
+ *log_secsize = log_sector_size;
+
+ if (nr & ((1 << log_sector_size) - 1))
+ grub_util_error ("%s", _("unaligned device size"));
+
+ return nr;
+}
+
+static char *
+sysfs_partition_path (const char *dev, const char *entry)
+{
+ const char *argv[7];
+ int fd;
+ pid_t pid;
+ FILE *udevadm;
+ char *buf = NULL;
+ size_t len = 0;
+ char *path = NULL;
+
+ argv[0] = "udevadm";
+ argv[1] = "info";
+ argv[2] = "--query";
+ argv[3] = "path";
+ argv[4] = "--name";
+ argv[5] = dev;
+ argv[6] = NULL;
+
+ pid = grub_util_exec_pipe (argv, &fd);
+
+ if (!pid)
+ return NULL;
+
+ /* Parent. Read udevadm's output. */
+ udevadm = fdopen (fd, "r");
+ if (!udevadm)
+ {
+ grub_util_warn (_("Unable to open stream from %s: %s"),
+ "udevadm", strerror (errno));
+ close (fd);
+ goto out;
+ }
+
+ if (getline (&buf, &len, udevadm) > 0)
+ {
+ char *newline;
+
+ newline = strchr (buf, '\n');
+ if (newline)
+ *newline = '\0';
+ path = xasprintf ("/sys%s/%s", buf, entry);
+ }
+
+out:
+ if (udevadm)
+ fclose (udevadm);
+ waitpid (pid, NULL, 0);
+ free (buf);
+
+ return path;
+}
+
+static int
+sysfs_partition_start (const char *dev, grub_disk_addr_t *start)
+{
+ char *path;
+ FILE *fp;
+ unsigned long long val;
+ int ret = 0;
+
+ path = sysfs_partition_path (dev, "start");
+ if (!path)
+ return 0;
+
+ fp = grub_util_fopen (path, "r");
+ if (!fp)
+ goto out;
+
+ if (fscanf (fp, "%llu", &val) == 1)
+ {
+ *start = (grub_disk_addr_t) val;
+ ret = 1;
+ }
+
+out:
+ free (path);
+ if (fp)
+ fclose (fp);
+
+ return ret;
+}
+
+grub_disk_addr_t
+grub_util_find_partition_start_os (const char *dev)
+{
+ grub_disk_addr_t start = 0;
+ grub_util_fd_t fd;
+ struct hd_geometry hdg;
+
+ if (sysfs_partition_start (dev, &start))
+ return start;
+
+ fd = open (dev, O_RDONLY);
+ if (fd == -1)
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot open `%s': %s"),
+ dev, strerror (errno));
+ return 0;
+ }
+
+ if (ioctl (fd, HDIO_GETGEO, &hdg))
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE,
+ "cannot get disk geometry of `%s'", dev);
+ close (fd);
+ return 0;
+ }
+
+ close (fd);
+
+ return hdg.start;
+}
+
+/* Cache of partition start sectors for each disk. */
+struct linux_partition_cache
+{
+ struct linux_partition_cache *next;
+ struct linux_partition_cache **prev;
+ char *dev;
+ unsigned long start;
+ int partno;
+};
+
+struct linux_partition_cache *linux_partition_cache_list;
+
+/* Check if we have devfs support. */
+static int
+have_devfs (void)
+{
+ static int dev_devfsd_exists = -1;
+
+ if (dev_devfsd_exists < 0)
+ {
+ struct stat st;
+
+ dev_devfsd_exists = stat ("/dev/.devfsd", &st) == 0;
+ }
+
+ return dev_devfsd_exists;
+}
+
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+
+static int
+grub_hostdisk_linux_find_partition (char *dev, grub_disk_addr_t sector)
+{
+ size_t len = strlen (dev);
+ const char *format;
+ char *p;
+ int i;
+ char real_dev[PATH_MAX];
+ struct linux_partition_cache *cache;
+ int missing = 0;
+
+ strcpy(real_dev, dev);
+
+ if (have_devfs () && strcmp (real_dev + len - 5, "/disc") == 0)
+ {
+ p = real_dev + len - 4;
+ format = "part%d";
+ }
+ else if (strncmp (real_dev, "/dev/disk/by-id/",
+ sizeof ("/dev/disk/by-id/") - 1) == 0)
+ {
+ p = real_dev + len;
+ format = "-part%d";
+ }
+ else if (real_dev[len - 1] >= '0' && real_dev[len - 1] <= '9')
+ {
+ p = real_dev + len;
+ format = "p%d";
+ }
+ else
+ {
+ p = real_dev + len;
+ format = "%d";
+ }
+
+ for (cache = linux_partition_cache_list; cache; cache = cache->next)
+ {
+ if (strcmp (cache->dev, dev) == 0 && cache->start == sector)
+ {
+ sprintf (p, format, cache->partno);
+ strcpy (dev, real_dev);
+ return 1;
+ }
+ }
+
+ for (i = 1; i < 10000; i++)
+ {
+ grub_util_fd_t fd;
+ grub_disk_addr_t start;
+ struct stat st;
+
+ sprintf (p, format, i);
+
+ fd = open (real_dev, O_RDONLY);
+ if (fd == -1)
+ {
+ if (missing++ < 10)
+ continue;
+ else
+ return 0;
+ }
+ missing = 0;
+
+ if (fstat (fd, &st) < 0
+ || !grub_util_device_is_mapped_stat (&st)
+ || !grub_util_get_dm_node_linear_info (st.st_rdev, 0, 0, &start))
+ start = grub_util_find_partition_start_os (real_dev);
+ /* We don't care about errors here. */
+ grub_errno = GRUB_ERR_NONE;
+
+ close (fd);
+
+ if (start == sector)
+ {
+ struct linux_partition_cache *new_cache_item;
+
+ new_cache_item = xmalloc (sizeof *new_cache_item);
+ new_cache_item->dev = xstrdup (dev);
+ new_cache_item->start = start;
+ new_cache_item->partno = i;
+ grub_list_push (GRUB_AS_LIST_P (&linux_partition_cache_list),
+ GRUB_AS_LIST (new_cache_item));
+
+ strcpy (dev, real_dev);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+#pragma GCC diagnostic error "-Wformat-nonliteral"
+
+void
+grub_hostdisk_flush_initial_buffer (const char *os_dev)
+{
+ grub_util_fd_t fd;
+ struct stat st;
+
+ fd = open (os_dev, O_RDONLY);
+ if (fd >= 0 && fstat (fd, &st) >= 0 && S_ISBLK (st.st_mode))
+ ioctl (fd, BLKFLSBUF, 0);
+ if (fd >= 0)
+ close (fd);
+}
+
+int
+grub_util_fd_open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags,
+ grub_disk_addr_t *max)
+{
+ grub_util_fd_t fd;
+ struct grub_util_hostdisk_data *data = disk->data;
+
+ *max = ~0ULL;
+
+#ifdef O_LARGEFILE
+ flags |= O_LARGEFILE;
+#endif
+#ifdef O_SYNC
+ flags |= O_SYNC;
+#endif
+#ifdef O_FSYNC
+ flags |= O_FSYNC;
+#endif
+#ifdef O_BINARY
+ flags |= O_BINARY;
+#endif
+#ifdef O_CLOEXEC
+ flags |= O_CLOEXEC;
+#endif
+
+ /* Linux has a bug that the disk cache for a whole disk is not consistent
+ with the one for a partition of the disk. */
+ {
+ int is_partition = 0;
+ char dev[PATH_MAX];
+ grub_disk_addr_t part_start = 0;
+
+ part_start = grub_partition_get_start (disk->partition)
+ >> (disk->log_sector_size - GRUB_DISK_SECTOR_BITS);
+
+ strncpy (dev, grub_util_biosdisk_get_osdev (disk), sizeof (dev) - 1);
+ dev[sizeof(dev) - 1] = '\0';
+ if (disk->partition
+ && strncmp (dev, "/dev/", 5) == 0)
+ {
+ if (sector >= part_start)
+ is_partition = grub_hostdisk_linux_find_partition (dev, part_start);
+ else
+ *max = part_start - sector;
+ }
+
+ reopen:
+
+ if (data->dev && strcmp (data->dev, dev) == 0 &&
+ data->access_mode == (flags & O_ACCMODE))
+ {
+ grub_dprintf ("hostdisk", "reusing open device `%s'\n", dev);
+ fd = data->fd;
+ }
+ else
+ {
+ free (data->dev);
+ data->dev = 0;
+ if (data->fd != -1)
+ {
+ if (data->access_mode == O_RDWR || data->access_mode == O_WRONLY)
+ {
+ fsync (data->fd);
+ if (data->is_disk)
+ ioctl (data->fd, BLKFLSBUF, 0);
+ }
+
+ close (data->fd);
+ data->fd = -1;
+ }
+
+ /* Open the partition. */
+ grub_dprintf ("hostdisk", "opening the device `%s' in open_device()\n", dev);
+ fd = open (dev, flags);
+ if (fd < 0)
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot open `%s': %s"),
+ dev, strerror (errno));
+ return -1;
+ }
+
+ data->dev = xstrdup (dev);
+ data->access_mode = (flags & O_ACCMODE);
+ data->fd = fd;
+
+ if (data->is_disk)
+ ioctl (data->fd, BLKFLSBUF, 0);
+ }
+
+ if (is_partition)
+ {
+ *max = grub_util_get_fd_size (fd, dev, 0);
+ *max >>= disk->log_sector_size;
+ if (sector - part_start >= *max)
+ {
+ *max = disk->partition->len - (sector - part_start);
+ if (*max == 0)
+ *max = ~0ULL;
+ is_partition = 0;
+ strncpy (dev, grub_util_biosdisk_get_osdev (disk), sizeof (dev) - 1);
+ dev[sizeof(dev) - 1] = '\0';
+ goto reopen;
+ }
+ sector -= part_start;
+ *max -= sector;
+ }
+ }
+
+ if (grub_util_fd_seek (fd, sector << disk->log_sector_size))
+ {
+ close (fd);
+ grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot seek `%s': %s"),
+ grub_util_biosdisk_get_osdev (disk), strerror (errno));
+ return -1;
+ }
+
+ return fd;
+}
diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
new file mode 100644
index 0000000..a6153d3
--- /dev/null
+++ b/grub-core/osdep/linux/ofpath.c
@@ -0,0 +1,769 @@
+/* ofpath.c - calculate OpenFirmware path names given an OS device */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2009, 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/>.
+ */
+
+#undef OFPATH_STANDALONE
+
+#ifndef OFPATH_STANDALONE
+#include <grub/types.h>
+#include <grub/util/misc.h>
+#include <grub/util/ofpath.h>
+#include <grub/i18n.h>
+#endif
+
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+
+#ifdef __sparc__
+typedef enum
+ {
+ GRUB_OFPATH_SPARC_WWN_ADDR = 1,
+ GRUB_OFPATH_SPARC_TGT_LUN,
+ } ofpath_sparc_addressing;
+
+struct ofpath_sparc_hba
+{
+ grub_uint32_t device_id;
+ ofpath_sparc_addressing addressing;
+};
+
+static struct ofpath_sparc_hba sparc_lsi_hba[] = {
+ /* Rhea, Jasper 320, LSI53C1020/1030. */
+ {0x30, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* SAS-1068E. */
+ {0x50, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* SAS-1064E. */
+ {0x56, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* Pandora SAS-1068E. */
+ {0x58, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* Aspen, Invader, LSI SAS-3108. */
+ {0x5d, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* Niwot, SAS 2108. */
+ {0x79, GRUB_OFPATH_SPARC_TGT_LUN},
+ /* Erie, Falcon, LSI SAS 2008. */
+ {0x72, GRUB_OFPATH_SPARC_WWN_ADDR},
+ /* LSI WarpDrive 6203. */
+ {0x7e, GRUB_OFPATH_SPARC_WWN_ADDR},
+ /* LSI SAS 2308. */
+ {0x87, GRUB_OFPATH_SPARC_WWN_ADDR},
+ /* LSI SAS 3008. */
+ {0x97, GRUB_OFPATH_SPARC_WWN_ADDR},
+ {0, 0}
+};
+
+static const int LSI_VENDOR_ID = 0x1000;
+#endif
+
+#ifdef OFPATH_STANDALONE
+#define xmalloc malloc
+void
+grub_util_error (const char *fmt, ...)
+{
+ va_list ap;
+
+ fprintf (stderr, "ofpath: error: ");
+ va_start (ap, fmt);
+ vfprintf (stderr, fmt, ap);
+ va_end (ap);
+ fputc ('\n', stderr);
+ exit (1);
+}
+
+void
+grub_util_info (const char *fmt, ...)
+{
+ va_list ap;
+
+ fprintf (stderr, "ofpath: info: ");
+ va_start (ap, fmt);
+ vfprintf (stderr, fmt, ap);
+ va_end (ap);
+ fputc ('\n', stderr);
+}
+
+#define grub_util_warn grub_util_info
+#define _(x) x
+#define xstrdup strdup
+#endif
+
+static void
+kill_trailing_dir(char *path)
+{
+ char *end = path + strlen(path) - 1;
+
+ while (end >= path)
+ {
+ if (*end != '/')
+ {
+ end--;
+ continue;
+ }
+ *end = '\0';
+ break;
+ }
+}
+
+static void
+trim_newline (char *path)
+{
+ char *end = path + strlen(path) - 1;
+
+ while (*end == '\n')
+ *end-- = '\0';
+}
+
+#define MAX_DISK_CAT 64
+
+static char *
+find_obppath (const char *sysfs_path_orig)
+{
+ char *sysfs_path, *path;
+ size_t path_size = strlen (sysfs_path_orig) + sizeof ("/obppath");
+
+ sysfs_path = xstrdup (sysfs_path_orig);
+ path = xmalloc (path_size);
+
+ while (1)
+ {
+ int fd;
+ char *of_path;
+ struct stat st;
+ size_t size;
+
+ snprintf(path, path_size, "%s/obppath", sysfs_path);
+#if 0
+ printf("Trying %s\n", path);
+#endif
+
+ fd = open(path, O_RDONLY);
+
+#ifndef __sparc__
+ if (fd < 0 || fstat (fd, &st) < 0)
+ {
+ if (fd >= 0)
+ close (fd);
+ snprintf(path, path_size, "%s/devspec", sysfs_path);
+ fd = open(path, O_RDONLY);
+ }
+#endif
+
+ if (fd < 0 || fstat (fd, &st) < 0)
+ {
+ if (fd >= 0)
+ close (fd);
+ kill_trailing_dir(sysfs_path);
+ if (!strcmp(sysfs_path, "/sys"))
+ {
+ grub_util_info (_("`obppath' not found in parent dirs of `%s',"
+ " no IEEE1275 name discovery"),
+ sysfs_path_orig);
+ free (path);
+ free (sysfs_path);
+ return NULL;
+ }
+ continue;
+ }
+ size = st.st_size;
+ of_path = xmalloc (size + MAX_DISK_CAT + 1);
+ memset(of_path, 0, size + MAX_DISK_CAT + 1);
+ if (read(fd, of_path, size) < 0)
+ {
+ grub_util_info (_("cannot read `%s': %s"), path, strerror (errno));
+ close(fd);
+ free (path);
+ free (of_path);
+ free (sysfs_path);
+ return NULL;
+ }
+ close(fd);
+
+ trim_newline(of_path);
+ free (path);
+ free (sysfs_path);
+ return of_path;
+ }
+}
+
+static char *
+xrealpath (const char *in)
+{
+ char *out;
+#ifdef PATH_MAX
+ out = xmalloc (PATH_MAX);
+ out = realpath (in, out);
+#else
+ out = realpath (in, NULL);
+#endif
+ if (!out)
+ grub_util_error (_("failed to get canonical path of `%s'"), in);
+ return out;
+}
+
+static char *
+block_device_get_sysfs_path_and_link(const char *devicenode)
+{
+ char *rpath;
+ char *rpath2;
+ char *ret;
+ size_t tmp_size = strlen (devicenode) + sizeof ("/sys/block/");
+ char *tmp = xmalloc (tmp_size);
+
+ memcpy (tmp, "/sys/block/", sizeof ("/sys/block/"));
+ strcat (tmp, devicenode);
+
+ rpath = xrealpath (tmp);
+ rpath2 = xmalloc (strlen (rpath) + sizeof ("/device"));
+ strcpy (rpath2, rpath);
+ strcat (rpath2, "/device");
+
+ ret = xrealpath (rpath2);
+
+ free (tmp);
+ free (rpath);
+ free (rpath2);
+ return ret;
+}
+
+static inline int
+my_isdigit (int c)
+{
+ return (c >= '0' && c <= '9');
+}
+
+static const char *
+trailing_digits (const char *p)
+{
+ const char *end;
+
+ end = p + strlen(p) - 1;
+ while (end >= p)
+ {
+ if (! my_isdigit(*end))
+ break;
+ end--;
+ }
+
+ return end + 1;
+}
+
+static char *
+__of_path_common(char *sysfs_path,
+ const char *device, int devno)
+{
+ const char *digit_string;
+ char disk[MAX_DISK_CAT];
+ char *of_path = find_obppath(sysfs_path);
+
+ if (!of_path)
+ return NULL;
+
+ digit_string = trailing_digits (device);
+ if (*digit_string == '\0')
+ {
+ snprintf(disk, sizeof (disk), "/disk@%d", devno);
+ }
+ else
+ {
+ int part;
+
+ sscanf(digit_string, "%d", &part);
+ snprintf(disk, sizeof (disk), "/disk@%d:%c", devno, 'a' + (part - 1));
+ }
+ strcat(of_path, disk);
+ return of_path;
+}
+
+static char *
+get_basename(char *p)
+{
+ char *ret = p;
+
+ while (*p)
+ {
+ if (*p == '/')
+ ret = p + 1;
+ p++;
+ }
+
+ return ret;
+}
+
+static char *
+of_path_of_vdisk(const char *sys_devname __attribute__((unused)),
+ const char *device,
+ const char *devnode __attribute__((unused)),
+ const char *devicenode)
+{
+ char *sysfs_path, *p;
+ int devno, junk;
+ char *ret;
+
+ sysfs_path = block_device_get_sysfs_path_and_link(devicenode);
+ p = get_basename (sysfs_path);
+ sscanf(p, "vdc-port-%d-%d", &devno, &junk);
+ ret = __of_path_common (sysfs_path, device, devno);
+
+ free (sysfs_path);
+ return ret;
+}
+
+static char *
+of_path_of_ide(const char *sys_devname __attribute__((unused)), const char *device,
+ const char *devnode __attribute__((unused)),
+ const char *devicenode)
+{
+ char *sysfs_path, *p;
+ int chan, devno;
+ char *ret;
+
+ sysfs_path = block_device_get_sysfs_path_and_link(devicenode);
+ p = get_basename (sysfs_path);
+ sscanf(p, "%d.%d", &chan, &devno);
+
+ ret = __of_path_common(sysfs_path, device, 2 * chan + devno);
+
+ free (sysfs_path);
+ return ret;
+}
+
+#ifdef __sparc__
+static char *
+of_path_of_nvme(const char *sys_devname __attribute__((unused)),
+ const char *device,
+ const char *devnode __attribute__((unused)),
+ const char *devicenode)
+{
+ char *sysfs_path, *of_path, disk[MAX_DISK_CAT];
+ const char *digit_string, *part_end;
+
+ digit_string = trailing_digits (device);
+ part_end = devicenode + strlen (devicenode) - 1;
+
+ if ((*digit_string != '\0') && (*part_end == 'p'))
+ {
+ /* We have a partition number, strip it off. */
+ int part;
+ char *nvmedev, *end;
+
+ nvmedev = strdup (devicenode);
+
+ if (!nvmedev)
+ return NULL;
+
+ end = nvmedev + strlen (nvmedev) - 1;
+ /* Remove the p. */
+ *end = '\0';
+ sscanf (digit_string, "%d", &part);
+ snprintf (disk, sizeof (disk), "/disk@1:%c", 'a' + (part - 1));
+ sysfs_path = block_device_get_sysfs_path_and_link (nvmedev);
+ free (nvmedev);
+ }
+ else
+ {
+ /* We do not have the parition. */
+ snprintf (disk, sizeof (disk), "/disk@1");
+ sysfs_path = block_device_get_sysfs_path_and_link (device);
+ }
+
+ of_path = find_obppath (sysfs_path);
+
+ if (of_path)
+ strcat (of_path, disk);
+
+ free (sysfs_path);
+ return of_path;
+}
+#endif
+
+static int
+vendor_is_ATA(const char *path)
+{
+ int fd, err;
+ char *bufname;
+ char bufcont[3];
+ size_t path_size;
+
+ path_size = strlen (path) + sizeof ("/vendor");
+
+ bufname = xmalloc (path_size);
+
+ snprintf (bufname, path_size, "%s/vendor", path);
+ fd = open (bufname, O_RDONLY);
+ if (fd < 0)
+ grub_util_error (_("cannot open `%s': %s"), bufname, strerror (errno));
+
+ memset(bufcont, 0, sizeof (bufcont));
+ err = read(fd, bufcont, sizeof (bufcont));
+ if (err < 0)
+ grub_util_error (_("cannot open `%s': %s"), bufname, strerror (errno));
+
+ close(fd);
+ free (bufname);
+
+ return (memcmp(bufcont, "ATA", 3) == 0);
+}
+
+#ifdef __sparc__
+static void
+check_hba_identifiers (const char *sysfs_path, int *vendor, int *device_id)
+{
+ char *ed = strstr (sysfs_path, "host");
+ size_t path_size;
+ char *p, *path;
+ char buf[8];
+ int fd;
+
+ if (!ed)
+ return;
+
+ p = xstrdup (sysfs_path);
+ ed = strstr (p, "host");
+
+ *ed = '\0';
+
+ path_size = (strlen (p) + sizeof ("vendor"));
+ path = xmalloc (path_size);
+
+ if (!path)
+ goto out;
+
+ snprintf (path, path_size, "%svendor", p);
+ fd = open (path, O_RDONLY);
+
+ if (fd < 0)
+ goto out;
+
+ memset (buf, 0, sizeof (buf));
+
+ if (read (fd, buf, sizeof (buf) - 1) < 0)
+ goto out;
+
+ close (fd);
+ sscanf (buf, "%x", vendor);
+
+ snprintf (path, path_size, "%sdevice", p);
+ fd = open (path, O_RDONLY);
+
+ if (fd < 0)
+ goto out;
+
+ memset (buf, 0, sizeof (buf));
+
+ if (read (fd, buf, sizeof (buf) - 1) < 0)
+ goto out;
+
+ close (fd);
+ sscanf (buf, "%x", device_id);
+
+ out:
+ free (path);
+ free (p);
+}
+#endif
+
+static void
+check_sas (const char *sysfs_path, int *tgt, unsigned long int *sas_address)
+{
+ char *ed = strstr (sysfs_path, "end_device");
+ char *p, *q, *path;
+ char phy[21];
+ int fd;
+ size_t path_size;
+
+ if (!ed)
+ return;
+
+ /* SAS devices are identified using disk@$PHY_ID */
+ p = xstrdup (sysfs_path);
+ ed = strstr(p, "end_device");
+ if (!ed)
+ return;
+
+ q = ed;
+ while (*q && *q != '/')
+ q++;
+ *q = '\0';
+
+ path_size = (strlen (p) + strlen (ed)
+ + sizeof ("%s/sas_device/%s/phy_identifier"));
+ path = xmalloc (path_size);
+ snprintf (path, path_size, "%s/sas_device/%s/phy_identifier", p, ed);
+ fd = open (path, O_RDONLY);
+ if (fd < 0)
+ grub_util_error (_("cannot open `%s': %s"), path, strerror (errno));
+
+ memset (phy, 0, sizeof (phy));
+ if (read (fd, phy, sizeof (phy) - 1) < 0)
+ grub_util_error (_("cannot read `%s': %s"), path, strerror (errno));
+
+ close (fd);
+
+ sscanf (phy, "%d", tgt);
+
+ snprintf (path, path_size, "%s/sas_device/%s/sas_address", p, ed);
+ fd = open (path, O_RDONLY);
+ if (fd < 0)
+ grub_util_error (_("cannot open `%s': %s"), path, strerror (errno));
+
+ memset (phy, 0, sizeof (phy));
+ if (read (fd, phy, sizeof (phy) - 1) < 0)
+ grub_util_error (_("cannot read `%s': %s"), path, strerror (errno));
+ sscanf (phy, "%lx", sas_address);
+
+ free (path);
+ free (p);
+ close (fd);
+}
+
+static char *
+of_path_of_scsi(const char *sys_devname __attribute__((unused)), const char *device,
+ const char *devnode __attribute__((unused)),
+ const char *devicenode)
+{
+ const char *p, *digit_string, *disk_name;
+ int host, bus, tgt, lun;
+ unsigned long int sas_address = 0;
+ char *sysfs_path, disk[MAX_DISK_CAT - sizeof ("/fp@0,0")];
+ char *of_path;
+
+ sysfs_path = block_device_get_sysfs_path_and_link(devicenode);
+ p = get_basename (sysfs_path);
+ sscanf(p, "%d:%d:%d:%d", &host, &bus, &tgt, &lun);
+ check_sas (sysfs_path, &tgt, &sas_address);
+
+ if (vendor_is_ATA(sysfs_path))
+ {
+ of_path = __of_path_common(sysfs_path, device, tgt);
+ free (sysfs_path);
+ return of_path;
+ }
+
+ of_path = find_obppath(sysfs_path);
+ if (!of_path)
+ goto out;
+
+ if (strstr (of_path, "qlc"))
+ strcat (of_path, "/fp@0,0");
+
+ if (strstr (of_path, "sbus"))
+ disk_name = "sd";
+ else
+ disk_name = "disk";
+
+ digit_string = trailing_digits (device);
+ if (strncmp (of_path, "/vdevice/", sizeof ("/vdevice/") - 1) == 0)
+ {
+ unsigned long id = 0x8000 | (tgt << 8) | (bus << 5) | lun;
+ if (*digit_string == '\0')
+ {
+ snprintf(disk, sizeof (disk), "/%s@%04lx000000000000", disk_name, id);
+ }
+ else
+ {
+ int part;
+
+ sscanf(digit_string, "%d", &part);
+ snprintf(disk, sizeof (disk),
+ "/%s@%04lx000000000000:%c", disk_name, id, 'a' + (part - 1));
+ }
+ }
+ else
+ {
+#ifdef __sparc__
+ ofpath_sparc_addressing addressing = GRUB_OFPATH_SPARC_TGT_LUN;
+ int vendor = 0, device_id = 0;
+ char *optr = disk;
+
+ check_hba_identifiers (sysfs_path, &vendor, &device_id);
+
+ if (vendor == LSI_VENDOR_ID)
+ {
+ struct ofpath_sparc_hba *lsi_hba;
+
+ /*
+ * Over time different OF addressing schemes have been supported.
+ * There is no generic addressing scheme that works across
+ * every HBA.
+ */
+ for (lsi_hba = sparc_lsi_hba; lsi_hba->device_id; lsi_hba++)
+ if (lsi_hba->device_id == device_id)
+ {
+ addressing = lsi_hba->addressing;
+ break;
+ }
+ }
+
+ if (addressing == GRUB_OFPATH_SPARC_WWN_ADDR)
+ optr += snprintf (disk, sizeof (disk), "/%s@w%lx,%x", disk_name,
+ sas_address, lun);
+ else
+ optr += snprintf (disk, sizeof (disk), "/%s@%x,%x", disk_name, tgt,
+ lun);
+
+ if (*digit_string != '\0')
+ {
+ int part;
+
+ sscanf (digit_string, "%d", &part);
+ snprintf (optr, sizeof (disk) - (optr - disk - 1), ":%c", 'a'
+ + (part - 1));
+ }
+#else
+ if (lun == 0)
+ {
+ int sas_id = 0;
+ sas_id = bus << 16 | tgt << 8 | lun;
+
+ if (*digit_string == '\0')
+ {
+ snprintf(disk, sizeof (disk), "/sas/%s@%x", disk_name, sas_id);
+ }
+ else
+ {
+ int part;
+
+ sscanf(digit_string, "%d", &part);
+ snprintf(disk, sizeof (disk),
+ "/sas/%s@%x:%c", disk_name, sas_id, 'a' + (part - 1));
+ }
+ }
+ else
+ {
+ char *lunstr;
+ int lunpart[4];
+
+ lunstr = xmalloc (20);
+
+ lunpart[0] = (lun >> 8) & 0xff;
+ lunpart[1] = lun & 0xff;
+ lunpart[2] = (lun >> 24) & 0xff;
+ lunpart[3] = (lun >> 16) & 0xff;
+
+ sprintf(lunstr, "%02x%02x%02x%02x00000000", lunpart[0], lunpart[1], lunpart[2], lunpart[3]);
+ long int longlun = atol(lunstr);
+
+ if (*digit_string == '\0')
+ {
+ snprintf(disk, sizeof (disk), "/sas/%s@%lx,%lu", disk_name, sas_address, longlun);
+ }
+ else
+ {
+ int part;
+
+ sscanf(digit_string, "%d", &part);
+ snprintf(disk, sizeof (disk),
+ "/sas/%s@%lx,%lu:%c", disk_name, sas_address, longlun, 'a' + (part - 1));
+ }
+ free (lunstr);
+ }
+#endif
+ }
+ strcat(of_path, disk);
+
+ out:
+ free (sysfs_path);
+ return of_path;
+}
+
+static char *
+strip_trailing_digits (const char *p)
+{
+ char *new, *end;
+
+ new = strdup (p);
+ end = new + strlen(new) - 1;
+ while (end >= new)
+ {
+ if (! my_isdigit(*end))
+ break;
+ *end-- = '\0';
+ }
+
+ return new;
+}
+
+char *
+grub_util_devname_to_ofpath (const char *sys_devname)
+{
+ char *name_buf, *device, *devnode, *devicenode, *ofpath;
+
+ name_buf = xrealpath (sys_devname);
+
+ device = get_basename (name_buf);
+ devnode = strip_trailing_digits (name_buf);
+ devicenode = strip_trailing_digits (device);
+
+ if (device[0] == 'h' && device[1] == 'd')
+ ofpath = of_path_of_ide(name_buf, device, devnode, devicenode);
+ else if (device[0] == 's'
+ && (device[1] == 'd' || device[1] == 'r'))
+ ofpath = of_path_of_scsi(name_buf, device, devnode, devicenode);
+ else if (device[0] == 'v' && device[1] == 'd' && device[2] == 'i'
+ && device[3] == 's' && device[4] == 'k')
+ ofpath = of_path_of_vdisk(name_buf, device, devnode, devicenode);
+ else if (device[0] == 'f' && device[1] == 'd'
+ && device[2] == '0' && device[3] == '\0')
+ /* All the models I've seen have a devalias "floppy".
+ New models have no floppy at all. */
+ ofpath = xstrdup ("floppy");
+#ifdef __sparc__
+ else if (device[0] == 'n' && device[1] == 'v' && device[2] == 'm'
+ && device[3] == 'e')
+ ofpath = of_path_of_nvme (name_buf, device, devnode, devicenode);
+#endif
+ else
+ {
+ grub_util_warn (_("unknown device type %s"), device);
+ ofpath = NULL;
+ }
+
+ free (devnode);
+ free (devicenode);
+ free (name_buf);
+
+ return ofpath;
+}
+
+#ifdef OFPATH_STANDALONE
+int main(int argc, char **argv)
+{
+ char *of_path;
+
+ if (argc != 2)
+ {
+ printf(_("Usage: %s DEVICE\n"), argv[0]);
+ return 1;
+ }
+
+ of_path = grub_util_devname_to_ofpath (argv[1]);
+ if (of_path)
+ printf("%s\n", of_path);
+ free (of_path);
+
+ return 0;
+}
+#endif
diff --git a/grub-core/osdep/linux/platform.c b/grub-core/osdep/linux/platform.c
new file mode 100644
index 0000000..e28a79d
--- /dev/null
+++ b/grub-core/osdep/linux/platform.c
@@ -0,0 +1,156 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 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.h>
+
+#include <grub/util/install.h>
+#include <grub/emu/exec.h>
+#include <grub/emu/misc.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <string.h>
+
+#include <sys/utsname.h>
+
+static int
+is_not_empty_directory (const char *dir)
+{
+ DIR *d;
+ struct dirent *de;
+
+ d = opendir (dir);
+ if (!d)
+ return 0;
+ while ((de = readdir (d)))
+ {
+ if (strcmp (de->d_name, ".") == 0
+ || strcmp (de->d_name, "..") == 0)
+ continue;
+ closedir (d);
+ return 1;
+ }
+
+ closedir (d);
+ return 0;
+}
+
+static int
+is_64_kernel (void)
+{
+ struct utsname un;
+
+ if (uname (&un) < 0)
+ return 0;
+
+ return strcmp (un.machine, "x86_64") == 0;
+}
+
+static int
+read_platform_size (void)
+{
+ FILE *fp;
+ char *buf = NULL;
+ size_t len = 0;
+ int ret = 0;
+
+ /* Newer kernels can tell us directly about the size of the
+ * underlying firmware - let's see if that interface is there. */
+ fp = grub_util_fopen ("/sys/firmware/efi/fw_platform_size", "r");
+ if (fp != NULL)
+ {
+ if (getline (&buf, &len, fp) >= 3) /* 2 digits plus newline */
+ {
+ if (strncmp (buf, "32", 2) == 0)
+ ret = 32;
+ else if (strncmp (buf, "64", 2) == 0)
+ ret = 64;
+ }
+ free (buf);
+ fclose (fp);
+ }
+
+ if (ret == 0)
+ {
+ /* Unrecognised - fall back to matching the kernel size
+ * instead */
+ if (is_64_kernel ())
+ ret = 64;
+ else
+ ret = 32;
+ }
+
+ return ret;
+}
+
+/* Are we running on an EFI-based system? */
+static int
+is_efi_system (void)
+{
+ /*
+ * Linux uses efivarfs (mounted on /sys/firmware/efi/efivars) to access the
+ * EFI variable store. Some legacy systems may still use the deprecated
+ * efivars interface (accessed through /sys/firmware/efi/vars). Where both
+ * are present, libefivar will use the former in preference, so attempting
+ * to load efivars will not interfere with later operations.
+ */
+ grub_util_exec_redirect_all ((const char * []){ "modprobe", "efivars", NULL },
+ NULL, NULL, "/dev/null");
+
+ grub_util_info ("Looking for /sys/firmware/efi ..");
+ if (is_not_empty_directory ("/sys/firmware/efi"))
+ {
+ grub_util_info ("...found");
+ return 1;
+ }
+ else
+ {
+ grub_util_info ("... not found");
+ return 0;
+ }
+}
+
+const char *
+grub_install_get_default_arm_platform (void)
+{
+ if (is_efi_system())
+ return "arm-efi";
+ else
+ return "arm-uboot";
+}
+
+const char *
+grub_install_get_default_x86_platform (void)
+{
+ if (is_efi_system())
+ {
+ if (read_platform_size() == 64)
+ return "x86_64-efi";
+ else
+ return "i386-efi";
+ }
+
+ grub_util_info ("Looking for /proc/device-tree ..");
+ if (is_not_empty_directory ("/proc/device-tree"))
+ {
+ grub_util_info ("...found");
+ return "i386-ieee1275";
+ }
+
+ grub_util_info ("... not found");
+ return "i386-pc";
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 10:13:09 +0000