/*
- * probe.c - identify a block device by its contents, and return a dev
- * struct with the details
+ * probe.c - reads tags (LABEL, UUID, FS type, ..) from a block device
*
- * Copyright (C) 1999 by Andries Brouwer
- * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
- * Copyright (C) 2001 by Andreas Dilger
- * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
*
- * %Begin-Header%
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
- * %End-Header%
*/
#include <stdio.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
-#include "blkidP.h"
-#include "uuid/uuid.h"
-#include "probe.h"
-
-static int figure_label_len(const unsigned char *label, int len)
-{
- const unsigned char *end = label + len - 1;
+#include <stdint.h>
+#ifdef HAVE_LIBUUID
+#include <uuid/uuid.h>
+#endif
+#include <stdarg.h>
- while ((*end == ' ' || *end == 0) && end >= label)
- --end;
- if (end >= label) {
- label = label;
- return end - label + 1;
- }
- return 0;
-}
+#include "blkidP.h"
+#include "probers/probers.h"
-static unsigned char *get_buffer(struct blkid_probe *pr,
- blkid_loff_t off, size_t len)
+static const struct blkid_idinfo *idinfos[] =
{
- ssize_t ret_read;
- unsigned char *newbuf;
-
- if (off + len <= SB_BUFFER_SIZE) {
- if (!pr->sbbuf) {
- pr->sbbuf = malloc(SB_BUFFER_SIZE);
- if (!pr->sbbuf)
- return NULL;
- if (lseek(pr->fd, 0, SEEK_SET) < 0)
- return NULL;
- ret_read = read(pr->fd, pr->sbbuf, SB_BUFFER_SIZE);
- if (ret_read < 0)
- ret_read = 0;
- pr->sb_valid = ret_read;
- }
- if (off+len > pr->sb_valid)
- return NULL;
- return pr->sbbuf + off;
- } else {
- if (len > pr->buf_max) {
- newbuf = realloc(pr->buf, len);
- if (newbuf == NULL)
- return NULL;
- pr->buf = newbuf;
- pr->buf_max = len;
- }
- if (blkid_llseek(pr->fd, off, SEEK_SET) < 0)
- return NULL;
- ret_read = read(pr->fd, pr->buf, len);
- if (ret_read != (ssize_t) len)
- return NULL;
- return pr->buf;
- }
-}
+ &swsuspend_idinfo,
+ &cramfs_idinfo,
+ &swap_idinfo
+};
-/*
- * This is a special case code to check for an MDRAID device. We do
- * this special since it requires checking for a superblock at the end
- * of the device.
- */
-static int check_mdraid(int fd, unsigned char *ret_uuid)
-{
- struct mdp_superblock_s *md;
- blkid_loff_t offset;
- char buf[4096];
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
- if (fd < 0)
- return -BLKID_ERR_PARAM;
+/* filter bitmap macros */
+#define blkid_bmp_wordsize (8 * sizeof(unsigned long))
+#define blkid_bmp_idx_bit(item) (1UL << ((item) % blkid_bmp_wordsize))
+#define blkid_bmp_idx_byte(item) ((item) / blkid_bmp_wordsize)
- offset = (blkid_get_dev_size(fd) & ~((blkid_loff_t)65535)) - 65536;
+#define blkid_bmp_set_item(bmp, item) \
+ ((bmp)[ blkid_bmp_idx_byte(item) ] |= blkid_bmp_idx_bit(item))
- if (blkid_llseek(fd, offset, 0) < 0 ||
- read(fd, buf, 4096) != 4096)
- return -BLKID_ERR_IO;
+#define blkid_bmp_unset_item(bmp, item) \
+ ((bmp)[ bmp_idx_byte(item) ] &= ~bmp_idx_bit(item))
- /* Check for magic number */
- if (memcmp("\251+N\374", buf, 4) && memcmp("\374N+\251", buf, 4))
- return -BLKID_ERR_PARAM;
+#define blkid_bmp_get_item(bmp, item) \
+ ((bmp)[ blkid_bmp_idx_byte(item) ] & blkid_bmp_idx_bit(item))
- if (!ret_uuid)
- return 0;
- *ret_uuid = 0;
+#define blkid_bmp_size(max_items) \
+ (((max_items) + blkid_bmp_wordsize) / blkid_bmp_wordsize)
- /* The MD UUID is not contiguous in the superblock, make it so */
- md = (struct mdp_superblock_s *)buf;
- if (md->set_uuid0 || md->set_uuid1 || md->set_uuid2 || md->set_uuid3) {
- memcpy(ret_uuid, &md->set_uuid0, 4);
- memcpy(ret_uuid + 4, &md->set_uuid1, 12);
- }
- return 0;
-}
+#define BLKID_FLTR_ITEMS ARRAY_SIZE(idinfos)
+#define BLKID_FLTR_SIZE blkid_bmp_size(BLKID_FLTR_ITEMS)
-static void set_uuid(blkid_dev dev, uuid_t uuid, const char *tag)
-{
- char str[37];
- if (!uuid_is_null(uuid)) {
- uuid_unparse(uuid, str);
- blkid_set_tag(dev, tag ? tag : "UUID", str, sizeof(str));
- }
-}
+static int blkid_probe_set_usage(blkid_probe pr, int usage);
-static void get_ext2_info(blkid_dev dev, struct blkid_magic *id,
- unsigned char *buf)
+int blkid_known_fstype(const char *fstype)
{
- struct ext2_super_block *es = (struct ext2_super_block *) buf;
- const char *label = 0;
-
- DBG(DEBUG_PROBE, printf("ext2_sb.compat = %08X:%08X:%08X\n",
- blkid_le32(es->s_feature_compat),
- blkid_le32(es->s_feature_incompat),
- blkid_le32(es->s_feature_ro_compat)));
-
- if (strlen(es->s_volume_name))
- label = es->s_volume_name;
- blkid_set_tag(dev, "LABEL", label, sizeof(es->s_volume_name));
-
- set_uuid(dev, es->s_uuid, 0);
+ int i;
- if ((es->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
- !uuid_is_null(es->s_journal_uuid))
- set_uuid(dev, es->s_journal_uuid, "EXT_JOURNAL");
+ if (!fstype)
+ return 0;
- if (strcmp(id->bim_type, "ext2") &&
- ((blkid_le32(es->s_feature_incompat) &
- EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0))
- blkid_set_tag(dev, "SEC_TYPE", "ext2", sizeof("ext2"));
+ for (i = 0; i < ARRAY_SIZE(idinfos); i++) {
+ const struct blkid_idinfo *id = idinfos[i];
+ if (strcmp(id->name, fstype) == 0)
+ return 1;
+ }
+ return 0;
}
/*
- * Check to see if a filesystem is in /proc/filesystems.
- * Returns 1 if found, 0 if not
+ * Returns a pointer to the newly allocated probe struct
*/
-static int fs_proc_check(const char *fs_name)
+blkid_probe blkid_new_probe(void)
{
- FILE *f;
- char buf[80], *cp, *t;
-
- f = fopen("/proc/filesystems", "r");
- if (!f)
- return (0);
- while (!feof(f)) {
- if (!fgets(buf, sizeof(buf), f))
- break;
- cp = buf;
- if (!isspace(*cp)) {
- while (*cp && !isspace(*cp))
- cp++;
- }
- while (*cp && isspace(*cp))
- cp++;
- if ((t = strchr(cp, '\n')) != NULL)
- *t = 0;
- if ((t = strchr(cp, '\t')) != NULL)
- *t = 0;
- if ((t = strchr(cp, ' ')) != NULL)
- *t = 0;
- if (!strcmp(fs_name, cp)) {
- fclose(f);
- return (1);
- }
- }
- fclose(f);
- return (0);
+ return calloc(1, sizeof(struct blkid_struct_probe));
}
/*
- * Check to see if a filesystem is available as a module
- * Returns 1 if found, 0 if not
+ * Deallocates probe struct, buffers and all allocated
+ * data that are associated with this probing control struct.
*/
-static int check_for_modules(const char *fs_name)
+void blkid_free_probe(blkid_probe pr)
{
- struct utsname uts;
- FILE *f;
- char buf[1024], *cp, *t;
- int i;
-
- if (uname(&uts))
- return (0);
- snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release);
-
- f = fopen(buf, "r");
- if (!f)
- return (0);
- while (!feof(f)) {
- if (!fgets(buf, sizeof(buf), f))
- break;
- if ((cp = strchr(buf, ':')) != NULL)
- *cp = 0;
- else
- continue;
- if ((cp = strrchr(buf, '/')) != NULL)
- cp++;
- i = strlen(cp);
- if (i > 3) {
- t = cp + i - 3;
- if (!strcmp(t, ".ko"))
- *t = 0;
- }
- if (!strcmp(cp, fs_name))
- return (1);
- }
- fclose(f);
- return (0);
+ if (!pr)
+ return;
+ free(pr->fltr);
+ free(pr->buf);
+ free(pr->sbbuf);
+ free(pr);
}
-static int system_supports_ext4(void)
+static void blkid_probe_reset_vals(blkid_probe pr)
{
- static time_t last_check = 0;
- static int ret = -1;
- time_t now = time(0);
-
- if (ret != -1 || (last_check - now) < 5)
- return ret;
- last_check = now;
- ret = (fs_proc_check("ext4") || check_for_modules("ext4"));
- return ret;
+ memset(pr->vals, 0, sizeof(pr->vals));
+ pr->nvals = 0;
}
-static int system_supports_ext4dev(void)
+void blkid_reset_probe(blkid_probe pr)
{
- static time_t last_check = 0;
- static int ret = -1;
- time_t now = time(0);
-
- if (ret != -1 || (last_check - now) < 5)
- return ret;
- last_check = now;
- ret = (fs_proc_check("ext4dev") || check_for_modules("ext4dev"));
- return ret;
+ if (!pr)
+ return;
+ if (pr->buf)
+ memset(pr->buf, 0, pr->buf_max);
+ pr->buf_off = 0;
+ pr->buf_len = 0;
+ if (pr->sbbuf)
+ memset(pr->sbbuf, 0, BLKID_SB_BUFSIZ);
+ pr->sbbuf_len = 0;
+ blkid_probe_reset_vals(pr);
}
-static int probe_ext4dev(struct blkid_probe *probe,
- struct blkid_magic *id,
- unsigned char *buf)
-{
- struct ext2_super_block *es;
- es = (struct ext2_super_block *)buf;
-
- /* Distinguish from jbd */
- if (blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
- return -BLKID_ERR_PARAM;
-
- /* ext4dev requires a journal */
- if (!(blkid_le32(es->s_feature_compat) &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return -BLKID_ERR_PARAM;
-
- /*
- * If the filesystem is marked as OK for use by in-development
- * filesystem code, but ext4dev is not supported, and ext4 is,
- * then don't call ourselves ext4dev, since we should be
- * detected as ext4 in that case.
- *
- * If the filesystem is marked as in use by production
- * filesystem, then it can only be used by ext4 and NOT by
- * ext4dev, so always disclaim we are ext4dev in that case.
- */
- if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) {
- if (!system_supports_ext4dev() && system_supports_ext4())
- return -BLKID_ERR_PARAM;
- } else
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(probe->dev, id, buf);
- return 0;
-}
-static int probe_ext4(struct blkid_probe *probe, struct blkid_magic *id,
- unsigned char *buf)
+/*
+ * Note that we have two offsets:
+ *
+ * 1/ general device offset (pr->off), that's useful for example when we
+ * probe a partition from whole disk image:
+ * blkid-low --offset <partition_position> disk.img
+ *
+ * 2/ buffer offset (the 'off' argument), that useful for offsets in
+ * superbloks, ...
+ *
+ * That means never use lseek(fd, 0, SEEK_SET), the zero position is always
+ * pr->off, so lseek(fd, pr->off, SEEK_SET).
+ *
+ */
+unsigned char *blkid_probe_get_buffer(blkid_probe pr,
+ blkid_loff_t off, blkid_loff_t len)
{
- struct ext2_super_block *es;
- es = (struct ext2_super_block *)buf;
-
- /* Distinguish from jbd */
- if (blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
- return -BLKID_ERR_PARAM;
-
- /* ext4 requires journal */
- if (!(blkid_le32(es->s_feature_compat) &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return -BLKID_ERR_PARAM;
-
- /* Ext4 has at least one feature which ext3 doesn't understand */
- if (!(blkid_le32(es->s_feature_ro_compat) &
- EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) &&
- !(blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_UNSUPPORTED))
- return -BLKID_ERR_PARAM;
-
- /*
- * If the filesystem is a OK for use by in-development
- * filesystem code, and ext4dev is supported or ext4 is not
- * supported, then don't call ourselves ext4, so we can redo
- * the detection and mark the filesystem as ext4dev.
- *
- * If the filesystem is marked as in use by production
- * filesystem, then it can only be used by ext4 and NOT by
- * ext4dev.
- */
- if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS) {
- if (system_supports_ext4dev() || !system_supports_ext4())
- return -BLKID_ERR_PARAM;
- }
- get_ext2_info(probe->dev, id, buf);
- return 0;
-}
+ ssize_t ret_read = 0;
-static int probe_ext3(struct blkid_probe *probe, struct blkid_magic *id,
- unsigned char *buf)
-{
- struct ext2_super_block *es;
- es = (struct ext2_super_block *)buf;
-
- /* Distinguish from ext4dev */
- if (blkid_le32(es->s_flags) & EXT2_FLAGS_TEST_FILESYS)
- return -BLKID_ERR_PARAM;
-
- /* ext3 requires journal */
- if (!(blkid_le32(es->s_feature_compat) &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return -BLKID_ERR_PARAM;
-
- /* Any features which ext3 doesn't understand */
- if ((blkid_le32(es->s_feature_ro_compat) &
- EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) ||
- (blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_UNSUPPORTED))
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(probe->dev, id, buf);
- return 0;
+ if (off + len <= BLKID_SB_BUFSIZ) {
+ if (!pr->sbbuf) {
+ pr->sbbuf = malloc(BLKID_SB_BUFSIZ);
+ if (!pr->sbbuf)
+ return NULL;
+ }
+ if (!pr->sbbuf_len) {
+ if (lseek(pr->fd, pr->off, SEEK_SET) < 0)
+ return NULL;
+ ret_read = read(pr->fd, pr->sbbuf, BLKID_SB_BUFSIZ);
+ if (ret_read < 0)
+ ret_read = 0;
+ pr->sbbuf_len = ret_read;
+ }
+ if (off + len > pr->sbbuf_len)
+ return NULL;
+ return pr->sbbuf + off;
+ } else {
+ unsigned char *newbuf = NULL;
+
+ if (len > pr->buf_max) {
+ newbuf = realloc(pr->buf, len);
+ if (!newbuf)
+ return NULL;
+ pr->buf = newbuf;
+ pr->buf_max = len;
+ pr->buf_off = 0;
+ pr->buf_len = 0;
+ }
+ if (newbuf || off < pr->buf_off ||
+ off + len > pr->buf_off + pr->buf_len) {
+
+ if (blkid_llseek(pr->fd, pr->off + off, SEEK_SET) < 0)
+ return NULL;
+
+ ret_read = read(pr->fd, pr->buf, len);
+ if (ret_read != (ssize_t) len)
+ return NULL;
+ pr->buf_off = off;
+ pr->buf_len = len;
+ }
+ return off ? pr->buf + (off - pr->buf_off) : pr->buf;
+ }
}
-static int probe_ext2(struct blkid_probe *probe, struct blkid_magic *id,
- unsigned char *buf)
+/*
+ * Assignes the device to probe control struct, resets internal buffers and
+ * reads 512 bytes from device to the buffers.
+ *
+ * Returns -1 in case of failure, or 0 on success.
+ */
+int blkid_probe_set_device(blkid_probe pr, int fd,
+ blkid_loff_t off, blkid_loff_t size)
{
- struct ext2_super_block *es;
+ if (!pr)
+ return -1;
- es = (struct ext2_super_block *)buf;
+ blkid_reset_probe(pr);
- /* Distinguish between ext3 and ext2 */
- if ((blkid_le32(es->s_feature_compat) &
- EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- return -BLKID_ERR_PARAM;
+ pr->fd = fd;
+ pr->off = off;
+ pr->size = size;
- /* Any features which ext2 doesn't understand */
- if ((blkid_le32(es->s_feature_ro_compat) &
- EXT2_FEATURE_RO_COMPAT_UNSUPPORTED) ||
- (blkid_le32(es->s_feature_incompat) &
- EXT2_FEATURE_INCOMPAT_UNSUPPORTED))
- return -BLKID_ERR_PARAM;
+ /* read SB to test if the device is readable */
+ if (!blkid_probe_get_buffer(pr, 0, 0x200))
+ return -1;
- get_ext2_info(probe->dev, id, buf);
return 0;
}
-static int probe_jbd(struct blkid_probe *probe, struct blkid_magic *id,
- unsigned char *buf)
+int blkid_probe_set_request(blkid_probe pr, int flags)
{
- struct ext2_super_block *es = (struct ext2_super_block *) buf;
-
- if (!(blkid_le32(es->s_feature_incompat) &
- EXT3_FEATURE_INCOMPAT_JOURNAL_DEV))
- return -BLKID_ERR_PARAM;
-
- get_ext2_info(probe->dev, id, buf);
-
+ if (!pr)
+ return -1;
+ pr->probreq = flags;
return 0;
}
-#define FAT_ATTR_VOLUME_ID 0x08
-#define FAT_ATTR_DIR 0x10
-#define FAT_ATTR_LONG_NAME 0x0f
-#define FAT_ATTR_MASK 0x3f
-#define FAT_ENTRY_FREE 0xe5
-
-static const char *no_name = "NO NAME ";
-
-static unsigned char *search_fat_label(struct vfat_dir_entry *dir, int count)
+int blkid_probe_reset_filter(blkid_probe pr)
{
- int i;
-
- for (i = 0; i < count; i++) {
- if (dir[i].name[0] == 0x00)
- break;
-
- if ((dir[i].name[0] == FAT_ENTRY_FREE) ||
- (dir[i].cluster_high != 0 || dir[i].cluster_low != 0) ||
- ((dir[i].attr & FAT_ATTR_MASK) == FAT_ATTR_LONG_NAME))
- continue;
-
- if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) ==
- FAT_ATTR_VOLUME_ID) {
- return dir[i].name;
- }
- }
+ if (!pr)
+ return -1;
+ if (pr->fltr)
+ memset(pr->fltr, 0, BLKID_FLTR_SIZE * sizeof(unsigned long));
return 0;
}
-/* FAT label extraction from the root directory taken from Kay
- * Sievers's volume_id library */
-static int probe_fat(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+/*
+ * flag:
+ *
+ * BLKID_FLTR_NOTIN - probe all filesystems which are NOT IN names[]
+ *
+ * BLKID_FLTR_ONLYIN - probe filesystem which are IN names[]
+ */
+int blkid_probe_filter_types(blkid_probe pr, int flag, char *names[])
{
- struct vfat_super_block *vs = (struct vfat_super_block *) buf;
- struct msdos_super_block *ms = (struct msdos_super_block *) buf;
- struct vfat_dir_entry *dir;
- char serno[10];
- const unsigned char *label = 0, *vol_label = 0, *tmp;
- unsigned char *vol_serno;
- int label_len = 0, maxloop = 100;
- __u16 sector_size, dir_entries, reserved;
- __u32 sect_count, fat_size, dir_size, cluster_count, fat_length;
- __u32 buf_size, start_data_sect, next, root_start, root_dir_entries;
-
- /* sector size check */
- tmp = (unsigned char *)&ms->ms_sector_size;
- sector_size = tmp[0] + (tmp[1] << 8);
- if (sector_size != 0x200 && sector_size != 0x400 &&
- sector_size != 0x800 && sector_size != 0x1000)
- return 1;
-
- tmp = (unsigned char *)&ms->ms_dir_entries;
- dir_entries = tmp[0] + (tmp[1] << 8);
- reserved = blkid_le16(ms->ms_reserved);
- tmp = (unsigned char *)&ms->ms_sectors;
- sect_count = tmp[0] + (tmp[1] << 8);
- if (sect_count == 0)
- sect_count = blkid_le32(ms->ms_total_sect);
-
- fat_length = blkid_le16(ms->ms_fat_length);
- if (fat_length == 0)
- fat_length = blkid_le32(vs->vs_fat32_length);
-
- fat_size = fat_length * ms->ms_fats;
- dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) +
- (sector_size-1)) / sector_size;
-
- cluster_count = sect_count - (reserved + fat_size + dir_size);
- if (ms->ms_cluster_size == 0)
- return 1;
- cluster_count /= ms->ms_cluster_size;
-
- if (cluster_count > FAT32_MAX)
- return 1;
-
- if (ms->ms_fat_length) {
- /* the label may be an attribute in the root directory */
- root_start = (reserved + fat_size) * sector_size;
- root_dir_entries = vs->vs_dir_entries[0] +
- (vs->vs_dir_entries[1] << 8);
-
- buf_size = root_dir_entries * sizeof(struct vfat_dir_entry);
- dir = (struct vfat_dir_entry *) get_buffer(probe, root_start,
- buf_size);
- if (dir)
- vol_label = search_fat_label(dir, root_dir_entries);
-
- if (!vol_label || !memcmp(vol_label, no_name, 11))
- vol_label = ms->ms_label;
- vol_serno = ms->ms_serno;
-
- blkid_set_tag(probe->dev, "SEC_TYPE", "msdos",
- sizeof("msdos"));
- } else {
- /* Search the FAT32 root dir for the label attribute */
- buf_size = vs->vs_cluster_size * sector_size;
- start_data_sect = reserved + fat_size;
-
- next = blkid_le32(vs->vs_root_cluster);
- while (next && --maxloop) {
- __u32 next_sect_off;
- __u64 next_off, fat_entry_off;
- int count;
-
- next_sect_off = (next - 2) * vs->vs_cluster_size;
- next_off = (start_data_sect + next_sect_off) *
- sector_size;
-
- dir = (struct vfat_dir_entry *)
- get_buffer(probe, next_off, buf_size);
- if (dir == NULL)
- break;
+ int i;
- count = buf_size / sizeof(struct vfat_dir_entry);
+ if (!pr || !names)
+ return -1;
+ if (!pr->fltr)
+ pr->fltr = calloc(BLKID_FLTR_SIZE, sizeof(unsigned long));
+ else
+ blkid_probe_reset_filter(pr);
- vol_label = search_fat_label(dir, count);
- if (vol_label)
- break;
+ for (i = 0; i < ARRAY_SIZE(idinfos); i++) {
+ int has = 0;
+ const struct blkid_idinfo *id = idinfos[i];
+ char **n;
- /* get FAT entry */
- fat_entry_off = (reserved * sector_size) +
- (next * sizeof(__u32));
- buf = get_buffer(probe, fat_entry_off, buf_size);
- if (buf == NULL)
+ for (n = names; *n; n++) {
+ if (!strcmp(id->name, *n)) {
+ has = 1;
break;
-
- /* set next cluster */
- next = blkid_le32(*((__u32 *) buf) & 0x0fffffff);
+ }
+ }
+ /* The default is enable all filesystems,
+ * set relevant bitmap bit means disable the filesystem.
+ */
+ if (flag & BLKID_FLTR_ONLYIN) {
+ if (!has)
+ blkid_bmp_set_item(pr->fltr, i);
+ } else if (flag & BLKID_FLTR_NOTIN) {
+ if (has)
+ blkid_bmp_set_item(pr->fltr, i);
}
-
- if (!vol_label || !memcmp(vol_label, no_name, 11))
- vol_label = vs->vs_label;
- vol_serno = vs->vs_serno;
- }
-
- if (vol_label && memcmp(vol_label, no_name, 11)) {
- if ((label_len = figure_label_len(vol_label, 11)))
- label = vol_label;
}
-
- /* We can't just print them as %04X, because they are unaligned */
- sprintf(serno, "%02X%02X-%02X%02X", vol_serno[3], vol_serno[2],
- vol_serno[1], vol_serno[0]);
-
- blkid_set_tag(probe->dev, "LABEL", (const char *) label, label_len);
- blkid_set_tag(probe->dev, "UUID", serno, sizeof(serno)-1);
-
return 0;
}
/*
- * The FAT filesystem could be without a magic string in superblock
- * (e.g. old floppies). This heuristic for FAT detection is inspired
- * by http://vrfy.org/projects/volume_id/ and Linux kernel.
- * [7-Jul-2005, Karel Zak <kzak@redhat.com>]
+ * flag:
+ *
+ * BLKID_FLTR_NOTIN - probe all filesystems which are NOT IN "usage"
+ *
+ * BLKID_FLTR_ONLYIN - probe filesystem which are IN "usage"
+ *
+ * where the "usage" is a set of filesystem according the usage flag (crypto,
+ * raid, filesystem, ...)
*/
-static int probe_fat_nomagic(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_filter_usage(blkid_probe pr, int flag, int usage)
{
- struct msdos_super_block *ms;
-
- ms = (struct msdos_super_block *)buf;
-
- /* heads check */
- if (ms->ms_heads == 0)
- return 1;
-
- /* cluster size check*/
- if (ms->ms_cluster_size == 0 ||
- (ms->ms_cluster_size & (ms->ms_cluster_size-1)))
- return 1;
-
- /* media check */
- if (ms->ms_media < 0xf8 && ms->ms_media != 0xf0)
- return 1;
-
- /* fat counts(Linux kernel expects at least 1 FAT table) */
- if (!ms->ms_fats)
- return 1;
-
- /*
- * OS/2 and apparently DFSee will place a FAT12/16-like
- * pseudo-superblock in the first 512 bytes of non-FAT
- * filesystems --- at least JFS and HPFS, and possibly others.
- * So we explicitly check for those filesystems at the
- * FAT12/16 filesystem magic field identifier, and if they are
- * present, we rule this out as a FAT filesystem, despite the
- * FAT-like pseudo-header.
- */
- if ((memcmp(ms->ms_magic, "JFS ", 8) == 0) ||
- (memcmp(ms->ms_magic, "HPFS ", 8) == 0))
- return 1;
-
- return probe_fat(probe, id, buf);
-}
-
-static int probe_ntfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ntfs_super_block *ns;
- struct master_file_table_record *mft;
- struct file_attribute *attr;
- char uuid_str[17], label_str[129], *cp;
- int bytes_per_sector, sectors_per_cluster;
- int mft_record_size, attr_off, attr_len;
- unsigned int i, attr_type, val_len;
- int val_off;
- __u64 nr_clusters;
- blkid_loff_t off;
- unsigned char *buf_mft, *val;
-
- ns = (struct ntfs_super_block *) buf;
-
- bytes_per_sector = ns->bios_parameter_block[0] +
- (ns->bios_parameter_block[1] << 8);
- sectors_per_cluster = ns->bios_parameter_block[2];
-
- if ((bytes_per_sector < 512) || (sectors_per_cluster == 0))
- return 1;
+ int i;
- if (ns->cluster_per_mft_record < 0)
- mft_record_size = 1 << (0-ns->cluster_per_mft_record);
+ if (!pr || !usage)
+ return -1;
+ if (!pr->fltr)
+ pr->fltr = calloc(BLKID_FLTR_SIZE, sizeof(unsigned long));
else
- mft_record_size = ns->cluster_per_mft_record *
- sectors_per_cluster * bytes_per_sector;
- nr_clusters = blkid_le64(ns->number_of_sectors) / sectors_per_cluster;
-
- if ((blkid_le64(ns->mft_cluster_location) > nr_clusters) ||
- (blkid_le64(ns->mft_mirror_cluster_location) > nr_clusters))
- return 1;
-
- off = blkid_le64(ns->mft_mirror_cluster_location) *
- bytes_per_sector * sectors_per_cluster;
-
- buf_mft = get_buffer(probe, off, mft_record_size);
- if (!buf_mft)
- return 1;
-
- if (memcmp(buf_mft, "FILE", 4))
- return 1;
-
- off = blkid_le64(ns->mft_cluster_location) * bytes_per_sector *
- sectors_per_cluster;
-
- buf_mft = get_buffer(probe, off, mft_record_size);
- if (!buf_mft)
- return 1;
-
- if (memcmp(buf_mft, "FILE", 4))
- return 1;
-
- off += MFT_RECORD_VOLUME * mft_record_size;
-
- buf_mft = get_buffer(probe, off, mft_record_size);
- if (!buf_mft)
- return 1;
-
- if (memcmp(buf_mft, "FILE", 4))
- return 1;
+ blkid_probe_reset_filter(pr);
- mft = (struct master_file_table_record *) buf_mft;
+ for (i = 0; i < ARRAY_SIZE(idinfos); i++) {
+ const struct blkid_idinfo *id = idinfos[i];
- attr_off = blkid_le16(mft->attrs_offset);
- label_str[0] = 0;
-
- while (1) {
- attr = (struct file_attribute *) (buf_mft + attr_off);
- attr_len = blkid_le16(attr->len);
- attr_type = blkid_le32(attr->type);
- val_off = blkid_le16(attr->value_offset);
- val_len = blkid_le32(attr->value_len);
-
- attr_off += attr_len;
-
- if ((attr_off > mft_record_size) ||
- (attr_len == 0))
- break;
-
- if (attr_type == MFT_RECORD_ATTR_END)
- break;
-
- if (attr_type == MFT_RECORD_ATTR_VOLUME_NAME) {
- if (val_len > sizeof(label_str))
- val_len = sizeof(label_str)-1;
-
- for (i=0, cp=label_str; i < val_len; i+=2,cp++) {
- val = ((__u8 *) attr) + val_off + i;
- *cp = val[0];
- if (val[1])
- *cp = '?';
- }
- *cp = 0;
- }
+ if (id->usage & usage) {
+ if (flag & BLKID_FLTR_NOTIN)
+ blkid_bmp_set_item(pr->fltr, i);
+ } else if (flag & BLKID_FLTR_ONLYIN)
+ blkid_bmp_set_item(pr->fltr, i);
}
-
- sprintf(uuid_str, "%016llX", blkid_le64(ns->volume_serial));
- blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
- if (label_str[0])
- blkid_set_tag(probe->dev, "LABEL", label_str, 0);
return 0;
}
-static int probe_xfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_invert_filter(blkid_probe pr)
{
- struct xfs_super_block *xs;
- const char *label = 0;
-
- xs = (struct xfs_super_block *)buf;
+ int i;
- if (strlen(xs->xs_fname))
- label = xs->xs_fname;
- blkid_set_tag(probe->dev, "LABEL", label, sizeof(xs->xs_fname));
- set_uuid(probe->dev, xs->xs_uuid, 0);
+ if (!pr || !pr->fltr)
+ return -1;
+ for (i = 0; i < BLKID_FLTR_SIZE; i++)
+ pr->fltr[i] = ~pr->fltr[i];
return 0;
}
-static int probe_reiserfs(struct blkid_probe *probe,
- struct blkid_magic *id, unsigned char *buf)
+int blkid_do_probe(blkid_probe pr)
{
- struct reiserfs_super_block *rs = (struct reiserfs_super_block *) buf;
- unsigned int blocksize;
- const char *label = 0;
-
- blocksize = blkid_le16(rs->rs_blocksize);
-
- /* The blocksize must be at least 1k */
- if ((blocksize >> 10) == 0)
- return -BLKID_ERR_PARAM;
-
- /* If the superblock is inside the journal, we have the wrong one */
- if (id->bim_kboff/(blocksize>>10) > blkid_le32(rs->rs_journal_block))
- return -BLKID_ERR_BIG;
-
- /* LABEL/UUID are only valid for later versions of Reiserfs v3.6. */
- if (id->bim_magic[6] == '2' || id->bim_magic[6] == '3') {
- if (strlen(rs->rs_label))
- label = rs->rs_label;
- set_uuid(probe->dev, rs->rs_uuid, 0);
- }
- blkid_set_tag(probe->dev, "LABEL", label, sizeof(rs->rs_label));
+ int i;
- return 0;
-}
+ if (!pr)
+ return -1;
-static int probe_reiserfs4(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct reiser4_super_block *rs4 = (struct reiser4_super_block *) buf;
- const unsigned char *label = 0;
+ blkid_probe_reset_vals(pr);
- if (strlen((char *) rs4->rs4_label))
- label = rs4->rs4_label;
- set_uuid(probe->dev, rs4->rs4_uuid, 0);
- blkid_set_tag(probe->dev, "LABEL", (const char *) label,
- sizeof(rs4->rs4_label));
+ for (i = 0; i < ARRAY_SIZE(idinfos); i++) {
+ const struct blkid_idinfo *id;
+ const struct blkid_idmag *mag;
- return 0;
-}
+ if (pr->fltr && blkid_bmp_get_item(pr->fltr, i))
+ continue;
-static int probe_jfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct jfs_super_block *js;
- const char *label = 0;
+ id = idinfos[i];
+ mag = id->magics ? &id->magics[0] : NULL;
- js = (struct jfs_super_block *)buf;
+ /* try to detect by magic string */
+ while(mag && mag->magic) {
+ int idx;
+ unsigned char *buf;
- if (blkid_le32(js->js_bsize) != (1 << blkid_le16(js->js_l2bsize)))
- return 1;
+ idx = mag->kboff + (mag->sboff >> 10);
+ buf = blkid_probe_get_buffer(pr, idx << 10, 1024);
- if (blkid_le32(js->js_pbsize) != (1 << blkid_le16(js->js_l2pbsize)))
- return 1;
+ if (buf && !memcmp(mag->magic,
+ buf + (mag->sboff & 0x3ff), mag->len))
+ break;
+ mag++;
+ }
- if ((blkid_le16(js->js_l2bsize) - blkid_le16(js->js_l2pbsize)) !=
- blkid_le16(js->js_l2bfactor))
- return 1;
+ if (mag && mag->magic == NULL)
+ /* magic string(s) defined, but not found */
+ continue;
- if (strlen((char *) js->js_label))
- label = (char *) js->js_label;
- blkid_set_tag(probe->dev, "LABEL", label, sizeof(js->js_label));
- set_uuid(probe->dev, js->js_uuid, 0);
- return 0;
-}
+ /* final check by probing function */
+ if (id->probefunc && id->probefunc(pr, mag) != 0)
+ continue;
-static int probe_zfs(struct blkid_probe *probe, struct blkid_magic *id,
- unsigned char *buf)
-{
-#if 0
- char *vdev_label;
- const char *pool_name = 0;
+ /* all cheks passed */
+ if (pr->probreq & BLKID_PROBREQ_TYPE)
+ blkid_probe_set_value(pr, "TYPE",
+ (unsigned char *) id->name,
+ strlen(id->name) + 1);
+ if ((pr->probreq & BLKID_PROBREQ_SECTYPE) && id->secname)
+ blkid_probe_set_value(pr, "SEC_TYPE",
+ (unsigned char *) id->secname,
+ strlen(id->secname) + 1);
+ if (pr->probreq & BLKID_PROBREQ_USAGE)
+ blkid_probe_set_usage(pr, id->usage);
- /* read nvpair data for pool name, pool GUID (complex) */
- blkid_set_tag(probe->dev, "LABEL", pool_name, sizeof(pool_name));
- set_uuid(probe->dev, pool_guid, 0);
-#endif
- return 0;
+ return 0;
+ }
+ return 1;
}
-static int probe_luks(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_numof_values(blkid_probe pr)
{
- char uuid[40];
-
- /* 168 is the offset to the 40 character uuid:
- * http://luks.endorphin.org/LUKS-on-disk-format.pdf */
- strncpy(uuid, (char *) buf+168, 40);
- blkid_set_tag(probe->dev, "UUID", uuid, sizeof(uuid));
- return 0;
+ if (!pr)
+ return -1;
+ return pr->nvals;
}
-static int probe_romfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct romfs_super_block *ros;
- const char *label = 0;
-
- ros = (struct romfs_super_block *)buf;
- if (strlen((char *) ros->ros_volume))
- label = (char *) ros->ros_volume;
- blkid_set_tag(probe->dev, "LABEL", label, 0);
- return 0;
-}
-
-static int probe_cramfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+static struct blkid_prval *blkid_probe_assign_value(
+ blkid_probe pr, const char *name)
{
- struct cramfs_super_block *csb;
- const char *label = 0;
+ struct blkid_prval *v;
- csb = (struct cramfs_super_block *)buf;
+ if (!name)
+ return NULL;
+ if (pr->nvals >= BLKID_PROBVAL_NVALS)
+ return NULL;
- if (strlen((char *) csb->name))
- label = (char *) csb->name;
- blkid_set_tag(probe->dev, "LABEL", label, 0);
- return 0;
+ v = &pr->vals[pr->nvals];
+ v->name = name;
+ pr->nvals++;
+ return v;
}
-static int probe_swap0(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf __BLKID_ATTR((unused)))
+int blkid_probe_set_value(blkid_probe pr, const char *name,
+ unsigned char *data, size_t len)
{
- blkid_set_tag(probe->dev, "UUID", 0, 0);
- blkid_set_tag(probe->dev, "LABEL", 0, 0);
- return 0;
-}
+ struct blkid_prval *v;
-static int probe_swap1(struct blkid_probe *probe,
- struct blkid_magic *id,
- unsigned char *buf __BLKID_ATTR((unused)))
-{
- struct swap_id_block *sws;
-
- probe_swap0(probe, id, buf);
- /*
- * Version 1 swap headers are always located at offset of 1024
- * bytes, although the swap signature itself is located at the
- * end of the page (which may vary depending on hardware
- * pagesize).
- */
- sws = (struct swap_id_block *) get_buffer(probe, 1024, 1024);
- if (!sws)
- return 1;
+ if (len > BLKID_PROBVAL_BUFSIZ)
+ len = BLKID_PROBVAL_BUFSIZ;
- /* check for wrong version or zeroed pagecount, for sanity */
- if (!memcmp(id->bim_magic, "SWAPSPACE2", id->bim_len) &&
- (sws->sws_version != 1 || sws->sws_lastpage == 0))
- return 1;
+ v = blkid_probe_assign_value(pr, name);
+ if (!v)
+ return -1;
- /* arbitrary sanity check.. is there any garbage down there? */
- if (sws->sws_pad[32] == 0 && sws->sws_pad[33] == 0) {
- if (sws->sws_volume[0])
- blkid_set_tag(probe->dev, "LABEL", sws->sws_volume,
- sizeof(sws->sws_volume));
- if (sws->sws_uuid[0])
- set_uuid(probe->dev, sws->sws_uuid, 0);
- }
+ memcpy(v->data, data, len);
+ v->len = len;
return 0;
}
-static int probe_iso9660(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_vsprintf_value(blkid_probe pr, const char *name,
+ const char *fmt, va_list ap)
{
- struct iso_volume_descriptor *iso;
- const unsigned char *label;
+ struct blkid_prval *v;
+ size_t len;
- iso = (struct iso_volume_descriptor *) buf;
- label = iso->volume_id;
-
- blkid_set_tag(probe->dev, "LABEL", (const char *) label,
- figure_label_len(label, 32));
- return 0;
-}
+ v = blkid_probe_assign_value(pr, name);
+ if (!v)
+ return -1;
+ len = vsnprintf((char *) v->data, sizeof(v->data), fmt, ap);
-static const char
-*udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02",
- "NSR03", "TEA01", 0 };
-
-static int probe_udf(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf __BLKID_ATTR((unused)))
-{
- int j, bs;
- struct iso_volume_descriptor *isosb;
- const char ** m;
-
- /* determine the block size by scanning in 2K increments
- (block sizes larger than 2K will be null padded) */
- for (bs = 1; bs < 16; bs++) {
- isosb = (struct iso_volume_descriptor *)
- get_buffer(probe, bs*2048+32768, sizeof(isosb));
- if (!isosb)
- return 1;
- if (isosb->vd_id[0])
- break;
+ if (len <= 0) {
+ pr->nvals--; /* reset the latest assigned value */
+ return -1;
}
-
- /* Scan up to another 64 blocks looking for additional VSD's */
- for (j = 1; j < 64; j++) {
- if (j > 1) {
- isosb = (struct iso_volume_descriptor *)
- get_buffer(probe, j*bs*2048+32768,
- sizeof(isosb));
- if (!isosb)
- return 1;
- }
- /* If we find NSR0x then call it udf:
- NSR01 for UDF 1.00
- NSR02 for UDF 1.50
- NSR03 for UDF 2.00 */
- if (!memcmp(isosb->vd_id, "NSR0", 4))
- return probe_iso9660(probe, id, buf);
- for (m = udf_magic; *m; m++)
- if (!memcmp(*m, isosb->vd_id, 5))
- break;
- if (*m == 0)
- return 1;
- }
- return 1;
-}
-
-static int probe_ocfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
-{
- struct ocfs_volume_header ovh;
- struct ocfs_volume_label ovl;
- __u32 major;
-
- memcpy(&ovh, buf, sizeof(ovh));
- memcpy(&ovl, buf+512, sizeof(ovl));
-
- major = ocfsmajor(ovh);
- if (major == 1)
- blkid_set_tag(probe->dev,"SEC_TYPE","ocfs1",sizeof("ocfs1"));
- else if (major >= 9)
- blkid_set_tag(probe->dev,"SEC_TYPE","ntocfs",sizeof("ntocfs"));
-
- blkid_set_tag(probe->dev, "LABEL", ovl.label, ocfslabellen(ovl));
- blkid_set_tag(probe->dev, "MOUNT", ovh.mount, ocfsmountlen(ovh));
- set_uuid(probe->dev, ovl.vol_id, 0);
+ v->len = len + 1;
return 0;
}
-static int probe_ocfs2(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_set_version(blkid_probe pr, const char *version)
{
- struct ocfs2_super_block *osb;
-
- osb = (struct ocfs2_super_block *)buf;
-
- blkid_set_tag(probe->dev, "LABEL", osb->s_label, sizeof(osb->s_label));
- set_uuid(probe->dev, osb->s_uuid, 0);
+ if (pr->probreq & BLKID_PROBREQ_VERSION)
+ return blkid_probe_set_value(pr, "VERSION",
+ (unsigned char *) version, strlen(version) + 1);
return 0;
}
-static int probe_oracleasm(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_sprintf_version(blkid_probe pr, const char *fmt, ...)
{
- struct oracle_asm_disk_label *dl;
+ int rc = 0;
- dl = (struct oracle_asm_disk_label *)buf;
+ if (pr->probreq & BLKID_PROBREQ_VERSION) {
+ va_list ap;
- blkid_set_tag(probe->dev, "LABEL", dl->dl_id, sizeof(dl->dl_id));
- return 0;
+ va_start(ap, fmt);
+ rc = blkid_probe_vsprintf_value(pr, "VERSION", fmt, ap);
+ va_end(ap);
+ }
+ return rc;
}
-static int probe_gfs(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+static int blkid_probe_set_usage(blkid_probe pr, int usage)
{
- struct gfs2_sb *sbd;
- const char *label = 0;
+ char *u = NULL;
- sbd = (struct gfs2_sb *)buf;
-
- if (blkid_be32(sbd->sb_fs_format) == GFS_FORMAT_FS &&
- blkid_be32(sbd->sb_multihost_format) == GFS_FORMAT_MULTI)
- {
- blkid_set_tag(probe->dev, "UUID", 0, 0);
+ if (usage & BLKID_USAGE_FILESYSTEM)
+ u = "filesystem";
+ else if (usage & BLKID_USAGE_RAID)
+ u = "raid";
+ else if (usage & BLKID_USAGE_CRYPTO)
+ u = "crypto";
+ else if (usage & BLKID_USAGE_OTHER)
+ u = "other";
+ else
+ u = "unknown";
- if (strlen(sbd->sb_locktable))
- label = sbd->sb_locktable;
- blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable));
- return 0;
- }
- return 1;
+ return blkid_probe_set_value(pr, "USAGE", (unsigned char *) u, strlen(u) + 1);
}
-static int probe_gfs2(struct blkid_probe *probe,
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_set_label(blkid_probe pr, unsigned char *label, size_t len)
{
- struct gfs2_sb *sbd;
- const char *label = 0;
+ struct blkid_prval *v;
+ int i;
- sbd = (struct gfs2_sb *)buf;
+ if ((pr->probreq & BLKID_PROBREQ_LABELRAW) &&
+ blkid_probe_set_value(pr, "LABEL_RAW", label, len) < 0)
+ return -1;
+ if (!(pr->probreq & BLKID_PROBREQ_LABEL))
+ return 0;
+ v = blkid_probe_assign_value(pr, "LABEL");
+ if (!v)
+ return -1;
- if (blkid_be32(sbd->sb_fs_format) == GFS2_FORMAT_FS &&
- blkid_be32(sbd->sb_multihost_format) == GFS2_FORMAT_MULTI)
- {
- blkid_set_tag(probe->dev, "UUID", 0, 0);
+ memcpy(v->data, label, len);
+ v->data[len] = '\0';
- if (strlen(sbd->sb_locktable))
- label = sbd->sb_locktable;
- blkid_set_tag(probe->dev, "LABEL", label, sizeof(sbd->sb_locktable));
- return 0;
+ /* remove trailing whitespace */
+ i = strnlen((char *) v->data, len);
+ while (i--) {
+ if (!isspace(v->data[i]))
+ break;
}
- return 1;
+ v->data[++i] = '\0';
+ v->len = i + 1;
+ return 0;
}
-static void unicode_16be_to_utf8(unsigned char *str, int out_len,
- const unsigned char *buf, int in_len)
+static size_t encode_to_utf8(int enc, unsigned char *dest, size_t len,
+ unsigned char *src, size_t count)
{
- int i, j;
- unsigned int c;
+ size_t i, j;
+ uint16_t c;
- for (i = j = 0; i + 2 <= in_len; i += 2) {
- c = (buf[i] << 8) | buf[i+1];
+ j = 0;
+ for (i = 0; i + 2 <= count; i += 2) {
+ if (enc == BLKID_ENC_UTF16LE)
+ c = (src[i+1] << 8) | src[i];
+ else /* BLKID_ENC_UTF16BE */
+ c = (src[i] << 8) | src[i+1];
if (c == 0) {
- str[j] = '\0';
+ dest[j] = '\0';
break;
} else if (c < 0x80) {
- if (j+1 >= out_len)
+ if (j+1 >= len)
break;
- str[j++] = (unsigned char) c;
+ dest[j++] = (uint8_t) c;
} else if (c < 0x800) {
- if (j+2 >= out_len)
+ if (j+2 >= len)
break;
- str[j++] = (unsigned char) (0xc0 | (c >> 6));
- str[j++] = (unsigned char) (0x80 | (c & 0x3f));
+ dest[j++] = (uint8_t) (0xc0 | (c >> 6));
+ dest[j++] = (uint8_t) (0x80 | (c & 0x3f));
} else {
- if (j+3 >= out_len)
+ if (j+3 >= len)
break;
- str[j++] = (unsigned char) (0xe0 | (c >> 12));
- str[j++] = (unsigned char) (0x80 | ((c >> 6) & 0x3f));
- str[j++] = (unsigned char) (0x80 | (c & 0x3f));
+ dest[j++] = (uint8_t) (0xe0 | (c >> 12));
+ dest[j++] = (uint8_t) (0x80 | ((c >> 6) & 0x3f));
+ dest[j++] = (uint8_t) (0x80 | (c & 0x3f));
}
}
- str[j] = '\0';
+ dest[j] = '\0';
+ return j;
}
-static int probe_hfs(struct blkid_probe *probe __BLKID_ATTR((unused)),
- struct blkid_magic *id __BLKID_ATTR((unused)),
- unsigned char *buf)
+int blkid_probe_set_utf8label(blkid_probe pr, unsigned char *label,
+ size_t len, int enc)
{
- struct hfs_mdb *hfs = (struct hfs_mdb *) buf;
- char uuid_str[17];
- __u64 uuid;
-
- if ((memcmp(hfs->embed_sig, "H+", 2) == 0) ||
- (memcmp(hfs->embed_sig, "HX", 2) == 0))
- return 1; /* Not hfs, but an embedded HFS+ */
-
- uuid = blkid_le64(*((unsigned long long *) hfs->finder_info.id));
- if (uuid) {
- sprintf(uuid_str, "%016llX", uuid);
- blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
- }
- blkid_set_tag(probe->dev, "LABEL", hfs->label, hfs->label_len);
+ struct blkid_prval *v;
+
+ if ((pr->probreq & BLKID_PROBREQ_LABELRAW) &&
+ blkid_probe_set_value(pr, "LABEL_RAW", label, len) < 0)
+ return -1;
+ if (!(pr->probreq & BLKID_PROBREQ_LABEL))
+ return 0;
+ v = blkid_probe_assign_value(pr, "LABEL");
+ if (!v)
+ return -1;
+ v->len = encode_to_utf8(enc, v->data, sizeof(v->data), label, len);
+ v->len++; /* \0 */
return 0;
}
-
-static int probe_hfsplus(struct blkid_probe *probe,
- struct blkid_magic *id,
- unsigned char *buf)
+/* like uuid_is_null() from libuuid, but works with arbitrary size of UUID */
+static int uuid_is_empty(const unsigned char *buf, size_t len)
{
- struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
- struct hfsplus_bnode_descriptor *descr;
- struct hfsplus_bheader_record *bnode;
- struct hfsplus_catalog_key *key;
- struct hfsplus_vol_header *hfsplus;
- struct hfs_mdb *sbd = (struct hfs_mdb *) buf;
- unsigned int alloc_block_size;
- unsigned int alloc_first_block;
- unsigned int embed_first_block;
- unsigned int off = 0;
- unsigned int blocksize;
- unsigned int cat_block;
- unsigned int ext_block_start;
- unsigned int ext_block_count;
- unsigned int record_count;
- unsigned int leaf_node_head;
- unsigned int leaf_node_count;
- unsigned int leaf_node_size;
- unsigned int leaf_block;
- unsigned int label_len;
- int ext;
- __u64 leaf_off, uuid;
- char uuid_str[17], label[512];
-
- /* Check for a HFS+ volume embedded in a HFS volume */
- if (memcmp(sbd->signature, "BD", 2) == 0) {
- if ((memcmp(sbd->embed_sig, "H+", 2) != 0) &&
- (memcmp(sbd->embed_sig, "HX", 2) != 0))
- /* This must be an HFS volume, so fail */
- return 1;
-
- alloc_block_size = blkid_be32(sbd->al_blk_size);
- alloc_first_block = blkid_be16(sbd->al_bl_st);
- embed_first_block = blkid_be16(sbd->embed_startblock);
- off = (alloc_first_block * 512) +
- (embed_first_block * alloc_block_size);
- buf = get_buffer(probe, off + (id->bim_kboff * 1024),
- sizeof(sbd));
- if (!buf)
- return 1;
-
- hfsplus = (struct hfsplus_vol_header *) buf;
- }
-
- hfsplus = (struct hfsplus_vol_header *) buf;
-
- if ((memcmp(hfsplus->signature, "H+", 2) != 0) &&
- (memcmp(hfsplus->signature, "HX", 2) != 0))
- return 1;
+ int i;
- uuid = blkid_le64(*((unsigned long long *) hfsplus->finder_info.id));
- if (uuid) {
- sprintf(uuid_str, "%016llX", uuid);
- blkid_set_tag(probe->dev, "UUID", uuid_str, 0);
- }
+ for (i = 0; i < len; i++)
+ if (buf[i])
+ return 0;
+ return 1;
+}
- blocksize = blkid_be32(hfsplus->blocksize);
- memcpy(extents, hfsplus->cat_file.extents, sizeof(extents));
- cat_block = blkid_be32(extents[0].start_block);
+int blkid_probe_sprintf_uuid(blkid_probe pr, unsigned char *uuid,
+ size_t len, const char *fmt, ...)
+{
+ va_list ap;
+ int rc;
- buf = get_buffer(probe, off + (cat_block * blocksize), 0x2000);
- if (!buf)
+ if (uuid_is_empty(uuid, len))
return 0;
- bnode = (struct hfsplus_bheader_record *)
- &buf[sizeof(struct hfsplus_bnode_descriptor)];
-
- leaf_node_head = blkid_be32(bnode->leaf_head);
- leaf_node_size = blkid_be16(bnode->node_size);
- leaf_node_count = blkid_be32(bnode->leaf_count);
- if (leaf_node_count == 0)
+ if ((pr->probreq & BLKID_PROBREQ_UUIDRAW) &&
+ blkid_probe_set_value(pr, "UUID_RAW", uuid, len) < 0)
+ return -1;
+ if (!(pr->probreq & BLKID_PROBREQ_UUID))
return 0;
- leaf_block = (leaf_node_head * leaf_node_size) / blocksize;
+ va_start(ap, fmt);
+ rc = blkid_probe_vsprintf_value(pr, "UUID", fmt, ap);
+ va_end(ap);
- /* get physical location */
- for (ext = 0; ext < HFSPLUS_EXTENT_COUNT; ext++) {
- ext_block_start = blkid_be32(extents[ext].start_block);
- ext_block_count = blkid_be32(extents[ext].block_count);
- if (ext_block_count == 0)
- return 0;
+ /* convert to lower case (..be paranoid) */
+ if (!rc) {
+ int i;
+ struct blkid_prval *v = &pr->vals[pr->nvals];
- /* this is our extent */
- if (leaf_block < ext_block_count)
- break;
-
- leaf_block -= ext_block_count;
+ for (i = 0; i < v->len; i++)
+ if (v->data[i] >= 'A' && v->data[i] <= 'F')
+ v->data[i] = (v->data[i] - 'A') + 'a';
}
- if (ext == HFSPLUS_EXTENT_COUNT)
- return 0;
-
- leaf_off = (ext_block_start + leaf_block) * blocksize;
+ return rc;
+}
- buf = get_buffer(probe, off + leaf_off, leaf_node_size);
- if (!buf)
- return 0;
+/* default _set_uuid function to set DCE UUIDs */
+int blkid_probe_set_uuid(blkid_probe pr, unsigned char *uuid)
+{
+ struct blkid_prval *v;
- descr = (struct hfsplus_bnode_descriptor *) buf;
- record_count = blkid_be16(descr->num_recs);
- if (record_count == 0)
+ if (uuid_is_empty(uuid, 16))
return 0;
- if (descr->type != HFS_NODE_LEAF)
+ if ((pr->probreq & BLKID_PROBREQ_UUIDRAW) &&
+ blkid_probe_set_value(pr, "UUID_RAW", uuid, 16) < 0)
+ return -1;
+ if (!(pr->probreq & BLKID_PROBREQ_UUID))
return 0;
- key = (struct hfsplus_catalog_key *)
- &buf[sizeof(struct hfsplus_bnode_descriptor)];
-
- if (blkid_be32(key->parent_id) != HFSPLUS_POR_CNID)
- return 0;
+ v = blkid_probe_assign_value(pr, "UUID");
- label_len = blkid_be16(key->unicode_len) * 2;
- unicode_16be_to_utf8(label, sizeof(label), key->unicode, label_len);
- blkid_set_tag(probe->dev, "LABEL", label, 0);
+#ifdef HAVE_LIBUUID
+ {
+ uuid_unparse(uuid, (char *) v->data);
+ v->len = 37;
+ }
+#else
+ v->len = snprintf(v->data, sizeof(v->data),
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid[0], uuid[1], uuid[2], uuid[3],
+ uuid[4], uuid[5],
+ uuid[6], uuid[7],
+ uuid[8], uuid[9],
+ uuid[10], uuid[11], uuid[12], uuid[13], uuid[14],uuid[15]);
+ v->len++;
+#endif
return 0;
}
-#define LVM2_LABEL_SIZE 512
-static unsigned int lvm2_calc_crc(const void *buf, unsigned int size)
-{
- static const unsigned int crctab[] = {
- 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
- 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
- 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
- 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
- };
- unsigned int i, crc = 0xf597a6cf;
- const __u8 *data = (const __u8 *) buf;
-
- for (i = 0; i < size; i++) {
- crc ^= *data++;
- crc = (crc >> 4) ^ crctab[crc & 0xf];
- crc = (crc >> 4) ^ crctab[crc & 0xf];
- }
- return crc;
-}
-
-static int probe_lvm2(struct blkid_probe *probe,
- struct blkid_magic *id,
- unsigned char *buf)
+int blkid_probe_get_value(blkid_probe pr, int num, const char **name,
+ unsigned char **data, size_t *len)
{
- int sector = (id->bim_kboff) << 1;
- struct lvm2_pv_label_header *label= (struct lvm2_pv_label_header *)buf;
- char *p, *q, uuid[40];
- unsigned int i, b;
-
- /* buf is at 0k or 1k offset; find label inside */
- if (memcmp(buf, "LABELONE", 8) == 0) {
- label = (struct lvm2_pv_label_header *)buf;
- } else if (memcmp(buf + 512, "LABELONE", 8) == 0) {
- label = (struct lvm2_pv_label_header *)(buf + 512);
- sector++;
- } else {
- return 1;
- }
+ struct blkid_prval *v;
- if (blkid_le64(label->sector_xl) != (unsigned) sector) {
- DBG(DEBUG_PROBE,
- printf("LVM2: label for sector %llu found at sector %d\n",
- blkid_le64(label->sector_xl), sector));
- return 1;
- }
-
- if (lvm2_calc_crc(&label->offset_xl, LVM2_LABEL_SIZE -
- ((char *)&label->offset_xl - (char *)label)) !=
- blkid_le32(label->crc_xl)) {
- DBG(DEBUG_PROBE,
- printf("LVM2: label checksum incorrect at sector %d\n",
- sector));
- return 1;
- }
-
- for (i=0, b=1, p=uuid, q= (char *) label->pv_uuid; i <= 32;
- i++, b <<= 1) {
- if (b & 0x4444440)
- *p++ = '-';
- *p++ = *q++;
- }
-
- blkid_set_tag(probe->dev, "UUID", uuid, LVM2_ID_LEN+6);
+ if (pr == NULL || num < 0 || num >= pr->nvals)
+ return -1;
+ v = &pr->vals[num];
+ if (name)
+ *name = v->name;
+ if (data)
+ *data = v->data;
+ if (len)
+ *len = v->len;
return 0;
}
-/*
- * Various filesystem magics that we can check for. Note that kboff and
- * sboff are in kilobytes and bytes respectively. All magics are in
- * byte strings so we don't worry about endian issues.
- */
-static struct blkid_magic type_array[] = {
-/* type kboff sboff len magic probe */
- { "oracleasm", 0, 32, 8, "ORCLDISK", probe_oracleasm },
- { "ntfs", 0, 3, 8, "NTFS ", probe_ntfs },
- { "jbd", 1, 0x38, 2, "\123\357", probe_jbd },
- { "ext4dev", 1, 0x38, 2, "\123\357", probe_ext4dev },
- { "ext4", 1, 0x38, 2, "\123\357", probe_ext4 },
- { "ext3", 1, 0x38, 2, "\123\357", probe_ext3 },
- { "ext2", 1, 0x38, 2, "\123\357", probe_ext2 },
- { "reiserfs", 8, 0x34, 8, "ReIsErFs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 9, "ReIsEr2Fs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 9, "ReIsEr3Fs", probe_reiserfs },
- { "reiserfs", 64, 0x34, 8, "ReIsErFs", probe_reiserfs },
- { "reiserfs", 8, 20, 8, "ReIsErFs", probe_reiserfs },
- { "reiser4", 64, 0, 7, "ReIsEr4", probe_reiserfs4 },
- { "gfs2", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs2 },
- { "gfs", 64, 0, 4, "\x01\x16\x19\x70", probe_gfs },
- { "vfat", 0, 0x52, 5, "MSWIN", probe_fat },
- { "vfat", 0, 0x52, 8, "FAT32 ", probe_fat },
- { "vfat", 0, 0x36, 5, "MSDOS", probe_fat },
- { "vfat", 0, 0x36, 8, "FAT16 ", probe_fat },
- { "vfat", 0, 0x36, 8, "FAT12 ", probe_fat },
- { "vfat", 0, 0, 1, "\353", probe_fat_nomagic },
- { "vfat", 0, 0, 1, "\351", probe_fat_nomagic },
- { "vfat", 0, 0x1fe, 2, "\125\252", probe_fat_nomagic },
- { "minix", 1, 0x10, 2, "\177\023", 0 },
- { "minix", 1, 0x10, 2, "\217\023", 0 },
- { "minix", 1, 0x10, 2, "\150\044", 0 },
- { "minix", 1, 0x10, 2, "\170\044", 0 },
- { "vxfs", 1, 0, 4, "\365\374\001\245", 0 },
- { "xfs", 0, 0, 4, "XFSB", probe_xfs },
- { "romfs", 0, 0, 8, "-rom1fs-", probe_romfs },
- { "bfs", 0, 0, 4, "\316\372\173\033", 0 },
- { "cramfs", 0, 0, 4, "E=\315\050", probe_cramfs },
- { "qnx4", 0, 4, 6, "QNX4FS", 0 },
- { "udf", 32, 1, 5, "BEA01", probe_udf },
- { "udf", 32, 1, 5, "BOOT2", probe_udf },
- { "udf", 32, 1, 5, "CD001", probe_udf },
- { "udf", 32, 1, 5, "CDW02", probe_udf },
- { "udf", 32, 1, 5, "NSR02", probe_udf },
- { "udf", 32, 1, 5, "NSR03", probe_udf },
- { "udf", 32, 1, 5, "TEA01", probe_udf },
- { "iso9660", 32, 1, 5, "CD001", probe_iso9660 },
- { "iso9660", 32, 9, 5, "CDROM", probe_iso9660 },
- { "jfs", 32, 0, 4, "JFS1", probe_jfs },
- { "zfs", 8, 0, 8, "\0\0\x02\xf5\xb0\x07\xb1\x0c", probe_zfs },
- { "zfs", 8, 0, 8, "\x0c\xb1\x07\xb0\xf5\x02\0\0", probe_zfs },
- { "zfs", 264, 0, 8, "\0\0\x02\xf5\xb0\x07\xb1\x0c", probe_zfs },
- { "zfs", 264, 0, 8, "\x0c\xb1\x07\xb0\xf5\x02\0\0", probe_zfs },
- { "hfsplus", 1, 0, 2, "BD", probe_hfsplus },
- { "hfsplus", 1, 0, 2, "H+", probe_hfsplus },
- { "hfsplus", 1, 0, 2, "HX", probe_hfsplus },
- { "hfs", 1, 0, 2, "BD", probe_hfs },
- { "ufs", 8, 0x55c, 4, "T\031\001\000", 0 },
- { "hpfs", 8, 0, 4, "I\350\225\371", 0 },
- { "sysv", 0, 0x3f8, 4, "\020~\030\375", 0 },
- { "swap", 0, 0xff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0xff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swsuspend", 0, 0xff6, 9, "S1SUSPEND", probe_swap1 },
- { "swsuspend", 0, 0xff6, 9, "S2SUSPEND", probe_swap1 },
- { "swap", 0, 0x1ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x1ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swsuspend", 0, 0x1ff6, 9, "S1SUSPEND", probe_swap1 },
- { "swsuspend", 0, 0x1ff6, 9, "S2SUSPEND", probe_swap1 },
- { "swap", 0, 0x3ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x3ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swsuspend", 0, 0x3ff6, 9, "S1SUSPEND", probe_swap1 },
- { "swsuspend", 0, 0x3ff6, 9, "S2SUSPEND", probe_swap1 },
- { "swap", 0, 0x7ff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0x7ff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swsuspend", 0, 0x7ff6, 9, "S1SUSPEND", probe_swap1 },
- { "swsuspend", 0, 0x7ff6, 9, "S2SUSPEND", probe_swap1 },
- { "swap", 0, 0xfff6, 10, "SWAP-SPACE", probe_swap0 },
- { "swap", 0, 0xfff6, 10, "SWAPSPACE2", probe_swap1 },
- { "swsuspend", 0, 0xfff6, 9, "S1SUSPEND", probe_swap1 },
- { "swsuspend", 0, 0xfff6, 9, "S2SUSPEND", probe_swap1 },
- { "ocfs", 0, 8, 9, "OracleCFS", probe_ocfs },
- { "ocfs2", 1, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 2, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 4, 0, 6, "OCFSV2", probe_ocfs2 },
- { "ocfs2", 8, 0, 6, "OCFSV2", probe_ocfs2 },
- { "crypt_LUKS", 0, 0, 6, "LUKS\xba\xbe", probe_luks },
- { "squashfs", 0, 0, 4, "sqsh", 0 },
- { "squashfs", 0, 0, 4, "hsqs", 0 },
- { "lvm2pv", 0, 0x218, 8, "LVM2 001", probe_lvm2 },
- { "lvm2pv", 0, 0x018, 8, "LVM2 001", probe_lvm2 },
- { "lvm2pv", 1, 0x018, 8, "LVM2 001", probe_lvm2 },
- { "lvm2pv", 1, 0x218, 8, "LVM2 001", probe_lvm2 },
- { NULL, 0, 0, 0, NULL, NULL }
-};
-/*
- * Verify that the data in dev is consistent with what is on the actual
- * block device (using the devname field only). Normally this will be
- * called when finding items in the cache, but for long running processes
- * is also desirable to revalidate an item before use.
- *
- * If we are unable to revalidate the data, we return the old data and
- * do not set the BLKID_BID_FL_VERIFIED flag on it.
- */
-blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev)
+int blkid_probe_lookup_value(blkid_probe pr, const char *name,
+ unsigned char **data, size_t *len)
{
- struct blkid_magic *id;
- struct blkid_probe probe;
- blkid_tag_iterate iter;
- unsigned char *buf;
- const char *type, *value;
- struct stat st;
- time_t diff, now;
- int idx;
-
- if (!dev)
- return NULL;
-
- now = time(0);
- diff = now - dev->bid_time;
-
- if (stat(dev->bid_name, &st) < 0) {
- DBG(DEBUG_PROBE,
- printf("blkid_verify: error %s (%d) while "
- "trying to stat %s\n", strerror(errno), errno,
- dev->bid_name));
- open_err:
- if ((errno == EPERM) || (errno == EACCES) || (errno == ENOENT)) {
- /* We don't have read permission, just return cache data. */
- DBG(DEBUG_PROBE, printf("returning unverified data for %s\n",
- dev->bid_name));
- return dev;
- }
- blkid_free_dev(dev);
- return NULL;
- }
-
- if ((now >= dev->bid_time) &&
- (st.st_mtime <= dev->bid_time) &&
- ((diff < BLKID_PROBE_MIN) ||
- (dev->bid_flags & BLKID_BID_FL_VERIFIED &&
- diff < BLKID_PROBE_INTERVAL)))
- return dev;
-
- DBG(DEBUG_PROBE,
- printf("need to revalidate %s (cache time %lu, stat time %lu,\n\t"
- "time since last check %lu)\n",
- dev->bid_name, (unsigned long)dev->bid_time,
- (unsigned long)st.st_mtime, (unsigned long)diff));
-
- if ((probe.fd = open(dev->bid_name, O_RDONLY)) < 0) {
- DBG(DEBUG_PROBE, printf("blkid_verify: error %s (%d) while "
- "opening %s\n", strerror(errno), errno,
- dev->bid_name));
- goto open_err;
- }
-
- probe.cache = cache;
- probe.dev = dev;
- probe.sbbuf = 0;
- probe.buf = 0;
- probe.buf_max = 0;
-
- /*
- * Iterate over the type array. If we already know the type,
- * then try that first. If it doesn't work, then blow away
- * the type information, and try again.
- *
- */
-try_again:
- type = 0;
- if (!dev->bid_type || !strcmp(dev->bid_type, "mdraid")) {
- uuid_t uuid;
-
- if (check_mdraid(probe.fd, uuid) == 0) {
- set_uuid(dev, uuid, 0);
- type = "mdraid";
- goto found_type;
- }
- }
- for (id = type_array; id->bim_type; id++) {
- if (dev->bid_type &&
- strcmp(id->bim_type, dev->bid_type))
- continue;
+ int i;
- idx = id->bim_kboff + (id->bim_sboff >> 10);
- buf = get_buffer(&probe, idx << 10, 1024);
- if (!buf)
- continue;
+ if (pr == NULL || pr->nvals == 0 || name == NULL)
+ return -1;
- if (memcmp(id->bim_magic, buf + (id->bim_sboff & 0x3ff),
- id->bim_len))
- continue;
+ for (i = 0; i < pr->nvals; i++) {
+ struct blkid_prval *v = &pr->vals[i];
- if ((id->bim_probe == NULL) ||
- (id->bim_probe(&probe, id, buf) == 0)) {
- type = id->bim_type;
- goto found_type;
+ if (v->name && strcmp(name, v->name) == 0) {
+ if (data)
+ *data = v->data;
+ if (len)
+ *len = v->len;
+ return 0;
}
}
-
- if (!id->bim_type && dev->bid_type) {
- /*
- * Zap the device filesystem information and try again
- */
- DBG(DEBUG_PROBE,
- printf("previous fs type %s not valid, "
- "trying full probe\n", dev->bid_type));
- iter = blkid_tag_iterate_begin(dev);
- while (blkid_tag_next(iter, &type, &value) == 0)
- blkid_set_tag(dev, type, 0, 0);
- blkid_tag_iterate_end(iter);
- goto try_again;
- }
-
- if (!dev->bid_type) {
- blkid_free_dev(dev);
- dev = 0;
- goto found_type;
- }
-
-found_type:
- if (dev && type) {
- dev->bid_devno = st.st_rdev;
- dev->bid_time = time(0);
- dev->bid_flags |= BLKID_BID_FL_VERIFIED;
- cache->bic_flags |= BLKID_BIC_FL_CHANGED;
-
- blkid_set_tag(dev, "TYPE", type, 0);
-
- DBG(DEBUG_PROBE, printf("%s: devno 0x%04llx, type %s\n",
- dev->bid_name, (long long)st.st_rdev, type));
- }
-
- if (probe.sbbuf)
- free(probe.sbbuf);
- if (probe.buf)
- free(probe.buf);
- if (probe.fd >= 0)
- close(probe.fd);
-
- return dev;
+ return -1;
}
-int blkid_known_fstype(const char *fstype)
+int blkid_probe_has_value(blkid_probe pr, const char *name)
{
- struct blkid_magic *id;
-
- for (id = type_array; id->bim_type; id++) {
- if (strcmp(fstype, id->bim_type) == 0)
- return 1;
- }
+ if (blkid_probe_lookup_value(pr, name, NULL, NULL) == 0)
+ return 1;
return 0;
}
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_dev dev;
- blkid_cache cache;
- int ret;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: %s device\n"
- "Probe a single device to determine type\n", argv[0]);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, "/dev/null")) != 0) {
- fprintf(stderr, "%s: error creating cache (%d)\n",
- argv[0], ret);
- exit(1);
- }
- dev = blkid_get_dev(cache, argv[1], BLKID_DEV_NORMAL);
- if (!dev) {
- printf("%s: %s has an unsupported type\n", argv[0], argv[1]);
- return (1);
- }
- printf("TYPE='%s'\n", dev->bid_type ? dev->bid_type : "(null)");
- if (dev->bid_label)
- printf("LABEL='%s'\n", dev->bid_label);
- if (dev->bid_uuid)
- printf("UUID='%s'\n", dev->bid_uuid);
-
- blkid_free_dev(dev);
- return (0);
-}
-#endif
+++ /dev/null
-/*
- * probe.h - constants and on-disk structures for extracting device data
- *
- * Copyright (C) 1999 by Andries Brouwer
- * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
- * Copyright (C) 2001 by Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#ifndef _BLKID_PROBE_H
-#define _BLKID_PROBE_H
-
-#include <blkid/blkid_types.h>
-
-struct blkid_magic;
-
-#define SB_BUFFER_SIZE 0x11000
-
-struct blkid_probe {
- int fd;
- blkid_cache cache;
- blkid_dev dev;
- unsigned char *sbbuf;
- size_t sb_valid;
- unsigned char *buf;
- size_t buf_max;
-};
-
-typedef int (*blkid_probe_t)(struct blkid_probe *probe,
- struct blkid_magic *id, unsigned char *buf);
-
-struct blkid_magic {
- const char *bim_type; /* type name for this magic */
- long bim_kboff; /* kilobyte offset of superblock */
- unsigned bim_sboff; /* byte offset within superblock */
- unsigned bim_len; /* length of magic */
- const char *bim_magic; /* magic string */
- blkid_probe_t bim_probe; /* probe function */
-};
-
-/*
- * Structures for each of the content types we want to extract information
- * from. We do not necessarily need the magic field here, because we have
- * already identified the content type before we get this far. It may still
- * be useful if there are probe functions which handle multiple content types.
- */
-struct ext2_super_block {
- __u32 s_inodes_count;
- __u32 s_blocks_count;
- __u32 s_r_blocks_count;
- __u32 s_free_blocks_count;
- __u32 s_free_inodes_count;
- __u32 s_first_data_block;
- __u32 s_log_block_size;
- __u32 s_dummy3[7];
- unsigned char s_magic[2];
- __u16 s_state;
- __u32 s_dummy5[8];
- __u32 s_feature_compat;
- __u32 s_feature_incompat;
- __u32 s_feature_ro_compat;
- unsigned char s_uuid[16];
- char s_volume_name[16];
- char s_last_mounted[64];
- __u32 s_algorithm_usage_bitmap;
- __u8 s_prealloc_blocks;
- __u8 s_prealloc_dir_blocks;
- __u16 s_reserved_gdt_blocks;
- __u8 s_journal_uuid[16];
- __u32 s_journal_inum;
- __u32 s_journal_dev;
- __u32 s_last_orphan;
- __u32 s_hash_seed[4];
- __u8 s_def_hash_version;
- __u8 s_jnl_backup_type;
- __u16 s_reserved_word_pad;
- __u32 s_default_mount_opts;
- __u32 s_first_meta_bg;
- __u32 s_mkfs_time;
- __u32 s_jnl_blocks[17];
- __u32 s_blocks_count_hi;
- __u32 s_r_blocks_count_hi;
- __u32 s_free_blocks_hi;
- __u16 s_min_extra_isize;
- __u16 s_want_extra_isize;
- __u32 s_flags;
- __u16 s_raid_stride;
- __u16 s_mmp_interval;
- __u64 s_mmp_block;
- __u32 s_raid_stripe_width;
- __u32 s_reserved[163];
-};
-
-/* for s_flags */
-#define EXT2_FLAGS_TEST_FILESYS 0x0004
-
-/* for s_feature_compat */
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
-
-/* for s_feature_ro_compat */
-#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
-#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008
-#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
-#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
-#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
-
-/* for s_feature_incompat */
-#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
-#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
-#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
-#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
-#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
-#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
-
-#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
- EXT2_FEATURE_INCOMPAT_META_BG)
-#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
-#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
-
-#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
- EXT3_FEATURE_INCOMPAT_RECOVER| \
- EXT2_FEATURE_INCOMPAT_META_BG)
-#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP
-#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP
-
-
-struct xfs_super_block {
- unsigned char xs_magic[4];
- __u32 xs_blocksize;
- __u64 xs_dblocks;
- __u64 xs_rblocks;
- __u32 xs_dummy1[2];
- unsigned char xs_uuid[16];
- __u32 xs_dummy2[15];
- char xs_fname[12];
- __u32 xs_dummy3[2];
- __u64 xs_icount;
- __u64 xs_ifree;
- __u64 xs_fdblocks;
-};
-
-struct reiserfs_super_block {
- __u32 rs_blocks_count;
- __u32 rs_free_blocks;
- __u32 rs_root_block;
- __u32 rs_journal_block;
- __u32 rs_journal_dev;
- __u32 rs_orig_journal_size;
- __u32 rs_dummy2[5];
- __u16 rs_blocksize;
- __u16 rs_dummy3[3];
- unsigned char rs_magic[12];
- __u32 rs_dummy4[5];
- unsigned char rs_uuid[16];
- char rs_label[16];
-};
-
-struct reiser4_super_block {
- unsigned char rs4_magic[16];
- __u16 rs4_dummy[2];
- unsigned char rs4_uuid[16];
- unsigned char rs4_label[16];
- __u64 rs4_dummy2;
-};
-
-struct jfs_super_block {
- unsigned char js_magic[4];
- __u32 js_version;
- __u64 js_size;
- __u32 js_bsize; /* 4: aggregate block size in bytes */
- __u16 js_l2bsize; /* 2: log2 of s_bsize */
- __u16 js_l2bfactor; /* 2: log2(s_bsize/hardware block size) */
- __u32 js_pbsize; /* 4: hardware/LVM block size in bytes */
- __u16 js_l2pbsize; /* 2: log2 of s_pbsize */
- __u16 js_pad; /* 2: padding necessary for alignment */
- __u32 js_dummy2[26];
- unsigned char js_uuid[16];
- unsigned char js_label[16];
- unsigned char js_loguuid[16];
-};
-
-struct romfs_super_block {
- unsigned char ros_magic[8];
- __u32 ros_dummy1[2];
- unsigned char ros_volume[16];
-};
-
-struct cramfs_super_block {
- __u8 magic[4];
- __u32 size;
- __u32 flags;
- __u32 future;
- __u8 signature[16];
- struct cramfs_info {
- __u32 crc;
- __u32 edition;
- __u32 blocks;
- __u32 files;
- } info;
- __u8 name[16];
-};
-
-struct swap_id_block {
-/* unsigned char sws_boot[1024]; */
- __u32 sws_version;
- __u32 sws_lastpage;
- __u32 sws_nrbad;
- unsigned char sws_uuid[16];
- char sws_volume[16];
- unsigned char sws_pad[117];
- __u32 sws_badpg;
-};
-
-/* Yucky misaligned values */
-struct vfat_super_block {
-/* 00*/ unsigned char vs_ignored[3];
-/* 03*/ unsigned char vs_sysid[8];
-/* 0b*/ unsigned char vs_sector_size[2];
-/* 0d*/ __u8 vs_cluster_size;
-/* 0e*/ __u16 vs_reserved;
-/* 10*/ __u8 vs_fats;
-/* 11*/ unsigned char vs_dir_entries[2];
-/* 13*/ unsigned char vs_sectors[2];
-/* 15*/ unsigned char vs_media;
-/* 16*/ __u16 vs_fat_length;
-/* 18*/ __u16 vs_secs_track;
-/* 1a*/ __u16 vs_heads;
-/* 1c*/ __u32 vs_hidden;
-/* 20*/ __u32 vs_total_sect;
-/* 24*/ __u32 vs_fat32_length;
-/* 28*/ __u16 vs_flags;
-/* 2a*/ __u8 vs_version[2];
-/* 2c*/ __u32 vs_root_cluster;
-/* 30*/ __u16 vs_insfo_sector;
-/* 32*/ __u16 vs_backup_boot;
-/* 34*/ __u16 vs_reserved2[6];
-/* 40*/ unsigned char vs_unknown[3];
-/* 43*/ unsigned char vs_serno[4];
-/* 47*/ unsigned char vs_label[11];
-/* 52*/ unsigned char vs_magic[8];
-/* 5a*/ unsigned char vs_dummy2[164];
-/*1fe*/ unsigned char vs_pmagic[2];
-};
-
-/* Yucky misaligned values */
-struct msdos_super_block {
-/* 00*/ unsigned char ms_ignored[3];
-/* 03*/ unsigned char ms_sysid[8];
-/* 0b*/ unsigned char ms_sector_size[2];
-/* 0d*/ __u8 ms_cluster_size;
-/* 0e*/ __u16 ms_reserved;
-/* 10*/ __u8 ms_fats;
-/* 11*/ unsigned char ms_dir_entries[2];
-/* 13*/ unsigned char ms_sectors[2];
-/* 15*/ unsigned char ms_media;
-/* 16*/ __u16 ms_fat_length;
-/* 18*/ __u16 ms_secs_track;
-/* 1a*/ __u16 ms_heads;
-/* 1c*/ __u32 ms_hidden;
-/* 20*/ __u32 ms_total_sect;
-/* 24*/ unsigned char ms_unknown[3];
-/* 27*/ unsigned char ms_serno[4];
-/* 2b*/ unsigned char ms_label[11];
-/* 36*/ unsigned char ms_magic[8];
-/* 3d*/ unsigned char ms_dummy2[192];
-/*1fe*/ unsigned char ms_pmagic[2];
-};
-
-struct vfat_dir_entry {
- __u8 name[11];
- __u8 attr;
- __u16 time_creat;
- __u16 date_creat;
- __u16 time_acc;
- __u16 date_acc;
- __u16 cluster_high;
- __u16 time_write;
- __u16 date_write;
- __u16 cluster_low;
- __u32 size;
-};
-
-/* maximum number of clusters */
-#define FAT12_MAX 0xFF4
-#define FAT16_MAX 0xFFF4
-#define FAT32_MAX 0x0FFFFFF6
-
-struct minix_super_block {
- __u16 ms_ninodes;
- __u16 ms_nzones;
- __u16 ms_imap_blocks;
- __u16 ms_zmap_blocks;
- __u16 ms_firstdatazone;
- __u16 ms_log_zone_size;
- __u32 ms_max_size;
- unsigned char ms_magic[2];
- __u16 ms_state;
- __u32 ms_zones;
-};
-
-struct mdp_superblock_s {
- __u32 md_magic;
- __u32 major_version;
- __u32 minor_version;
- __u32 patch_version;
- __u32 gvalid_words;
- __u32 set_uuid0;
- __u32 ctime;
- __u32 level;
- __u32 size;
- __u32 nr_disks;
- __u32 raid_disks;
- __u32 md_minor;
- __u32 not_persistent;
- __u32 set_uuid1;
- __u32 set_uuid2;
- __u32 set_uuid3;
-};
-
-struct hfs_super_block {
- char h_magic[2];
- char h_dummy[18];
- __u32 h_blksize;
-};
-
-struct ocfs_volume_header {
- unsigned char minor_version[4];
- unsigned char major_version[4];
- unsigned char signature[128];
- char mount[128];
- unsigned char mount_len[2];
-};
-
-struct ocfs_volume_label {
- unsigned char disk_lock[48];
- char label[64];
- unsigned char label_len[2];
- unsigned char vol_id[16];
- unsigned char vol_id_len[2];
-};
-
-#define ocfsmajor(o) ((__u32)o.major_version[0] \
- + (((__u32) o.major_version[1]) << 8) \
- + (((__u32) o.major_version[2]) << 16) \
- + (((__u32) o.major_version[3]) << 24))
-#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))
-#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))
-
-#define OCFS_MAGIC "OracleCFS"
-
-struct ocfs2_super_block {
- unsigned char signature[8];
- unsigned char s_dummy1[184];
- unsigned char s_dummy2[80];
- char s_label[64];
- unsigned char s_uuid[16];
-};
-
-#define OCFS2_MIN_BLOCKSIZE 512
-#define OCFS2_MAX_BLOCKSIZE 4096
-
-#define OCFS2_SUPER_BLOCK_BLKNO 2
-
-#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
-
-struct oracle_asm_disk_label {
- char dummy[32];
- char dl_tag[8];
- char dl_id[24];
-};
-
-#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK"
-#define ORACLE_ASM_DISK_LABEL_OFFSET 32
-
-struct iso_volume_descriptor {
- unsigned char vd_type;
- unsigned char vd_id[5];
- unsigned char vd_version;
- unsigned char flags;
- unsigned char system_id[32];
- unsigned char volume_id[32];
- unsigned char unused[8];
- unsigned char space_size[8];
- unsigned char escape_sequences[8];
-};
-
-/* Common gfs/gfs2 constants: */
-#define GFS_MAGIC 0x01161970
-#define GFS_DEFAULT_BSIZE 4096
-#define GFS_SUPERBLOCK_OFFSET (0x10 * GFS_DEFAULT_BSIZE)
-#define GFS_METATYPE_SB 1
-#define GFS_FORMAT_SB 100
-#define GFS_LOCKNAME_LEN 64
-
-/* gfs1 constants: */
-#define GFS_FORMAT_FS 1309
-#define GFS_FORMAT_MULTI 1401
-/* gfs2 constants: */
-#define GFS2_FORMAT_FS 1801
-#define GFS2_FORMAT_MULTI 1900
-
-struct gfs2_meta_header {
- __u32 mh_magic;
- __u32 mh_type;
- __u64 __pad0; /* Was generation number in gfs1 */
- __u32 mh_format;
- __u32 __pad1; /* Was incarnation number in gfs1 */
-};
-
-struct gfs2_inum {
- __u64 no_formal_ino;
- __u64 no_addr;
-};
-
-struct gfs2_sb {
- struct gfs2_meta_header sb_header;
-
- __u32 sb_fs_format;
- __u32 sb_multihost_format;
- __u32 __pad0; /* Was superblock flags in gfs1 */
-
- __u32 sb_bsize;
- __u32 sb_bsize_shift;
- __u32 __pad1; /* Was journal segment size in gfs1 */
-
- struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
- struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
- struct gfs2_inum sb_root_dir;
-
- char sb_lockproto[GFS_LOCKNAME_LEN];
- char sb_locktable[GFS_LOCKNAME_LEN];
- /* In gfs1, quota and license dinodes followed */
-};
-
-struct ntfs_super_block {
- __u8 jump[3];
- __u8 oem_id[8];
- __u8 bios_parameter_block[25];
- __u16 unused[2];
- __u64 number_of_sectors;
- __u64 mft_cluster_location;
- __u64 mft_mirror_cluster_location;
- __s8 cluster_per_mft_record;
- __u8 reserved1[3];
- __s8 cluster_per_index_record;
- __u8 reserved2[3];
- __u64 volume_serial;
- __u16 checksum;
-};
-
-struct master_file_table_record {
- __u32 magic;
- __u16 usa_ofs;
- __u16 usa_count;
- __u64 lsn;
- __u16 sequence_number;
- __u16 link_count;
- __u16 attrs_offset;
- __u16 flags;
- __u32 bytes_in_use;
- __u32 bytes_allocated;
-} __attribute__((__packed__));
-
-struct file_attribute {
- __u32 type;
- __u32 len;
- __u8 non_resident;
- __u8 name_len;
- __u16 name_offset;
- __u16 flags;
- __u16 instance;
- __u32 value_len;
- __u16 value_offset;
-} __attribute__((__packed__));
-
-#define MFT_RECORD_VOLUME 3
-#define MFT_RECORD_ATTR_VOLUME_NAME 0x60
-#define MFT_RECORD_ATTR_VOLUME_INFO 0x70
-#define MFT_RECORD_ATTR_OBJECT_ID 0x40
-#define MFT_RECORD_ATTR_END 0xffffffffu
-
-/* HFS / HFS+ */
-struct hfs_finder_info {
- __u32 boot_folder;
- __u32 start_app;
- __u32 open_folder;
- __u32 os9_folder;
- __u32 reserved;
- __u32 osx_folder;
- __u8 id[8];
-} __attribute__((packed));
-
-struct hfs_mdb {
- __u8 signature[2];
- __u32 cr_date;
- __u32 ls_Mod;
- __u16 atrb;
- __u16 nm_fls;
- __u16 vbm_st;
- __u16 alloc_ptr;
- __u16 nm_al_blks;
- __u32 al_blk_size;
- __u32 clp_size;
- __u16 al_bl_st;
- __u32 nxt_cnid;
- __u16 free_bks;
- __u8 label_len;
- __u8 label[27];
- __u32 vol_bkup;
- __u16 vol_seq_num;
- __u32 wr_cnt;
- __u32 xt_clump_size;
- __u32 ct_clump_size;
- __u16 num_root_dirs;
- __u32 file_count;
- __u32 dir_count;
- struct hfs_finder_info finder_info;
- __u8 embed_sig[2];
- __u16 embed_startblock;
- __u16 embed_blockcount;
-} __attribute__((packed));
-
-
-#define HFS_NODE_LEAF 0xff
-#define HFSPLUS_POR_CNID 1
-
-struct hfsplus_bnode_descriptor {
- __u32 next;
- __u32 prev;
- __u8 type;
- __u8 height;
- __u16 num_recs;
- __u16 reserved;
-} __attribute__((packed));
-
-struct hfsplus_bheader_record {
- __u16 depth;
- __u32 root;
- __u32 leaf_count;
- __u32 leaf_head;
- __u32 leaf_tail;
- __u16 node_size;
-} __attribute__((packed));
-
-struct hfsplus_catalog_key {
- __u16 key_len;
- __u32 parent_id;
- __u16 unicode_len;
- __u8 unicode[255 * 2];
-} __attribute__((packed));
-
-struct hfsplus_extent {
- __u32 start_block;
- __u32 block_count;
-} __attribute__((packed));
-
-#define HFSPLUS_EXTENT_COUNT 8
-struct hfsplus_fork {
- __u64 total_size;
- __u32 clump_size;
- __u32 total_blocks;
- struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT];
-} __attribute__((packed));
-
-struct hfsplus_vol_header {
- __u8 signature[2];
- __u16 version;
- __u32 attributes;
- __u32 last_mount_vers;
- __u32 reserved;
- __u32 create_date;
- __u32 modify_date;
- __u32 backup_date;
- __u32 checked_date;
- __u32 file_count;
- __u32 folder_count;
- __u32 blocksize;
- __u32 total_blocks;
- __u32 free_blocks;
- __u32 next_alloc;
- __u32 rsrc_clump_sz;
- __u32 data_clump_sz;
- __u32 next_cnid;
- __u32 write_count;
- __u64 encodings_bmp;
- struct hfs_finder_info finder_info;
- struct hfsplus_fork alloc_file;
- struct hfsplus_fork ext_file;
- struct hfsplus_fork cat_file;
- struct hfsplus_fork attr_file;
- struct hfsplus_fork start_file;
-} __attribute__((packed));
-
-
-/* this is lvm's label_header & pv_header combined. */
-
-#define LVM2_ID_LEN 32
-
-struct lvm2_pv_label_header {
- /* label_header */
- __u8 id[8]; /* LABELONE */
- __u64 sector_xl; /* Sector number of this label */
- __u32 crc_xl; /* From next field to end of sector */
- __u32 offset_xl; /* Offset from start of struct to contents */
- __u8 type[8]; /* LVM2 001 */
- /* pv_header */
- __u8 pv_uuid[LVM2_ID_LEN];
-} __attribute__ ((packed));
-
-/*
- * Byte swap functions
- */
-#ifdef __GNUC__
-#define _INLINE_ static __inline__
-#else /* For Watcom C */
-#define _INLINE_ static inline
-#endif
-
-static __u16 blkid_swab16(__u16 val);
-static __u32 blkid_swab32(__u32 val);
-static __u64 blkid_swab64(__u64 val);
-
-#if ((defined __GNUC__) && \
- (defined(__i386__) || defined(__i486__) || defined(__i586__)))
-
-#define _BLKID_HAVE_ASM_BITOPS_
-
-_INLINE_ __u32 blkid_swab32(__u32 val)
-{
-#ifdef EXT2FS_REQUIRE_486
- __asm__("bswap %0" : "=r" (val) : "0" (val));
-#else
- __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
- "rorl $16,%0\n\t" /* swap words */
- "xchgb %b0,%h0" /* swap higher bytes */
- :"=q" (val)
- : "0" (val));
-#endif
- return val;
-}
-
-_INLINE_ __u16 blkid_swab16(__u16 val)
-{
- __asm__("xchgb %b0,%h0" /* swap bytes */ \
- : "=q" (val) \
- : "0" (val)); \
- return val;
-}
-
-_INLINE_ __u64 blkid_swab64(__u64 val)
-{
- return (blkid_swab32(val >> 32) |
- (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
-}
-#endif
-
-#if !defined(_BLKID_HAVE_ASM_BITOPS_)
-
-_INLINE_ __u16 blkid_swab16(__u16 val)
-{
- return (val >> 8) | (val << 8);
-}
-
-_INLINE_ __u32 blkid_swab32(__u32 val)
-{
- return ((val>>24) | ((val>>8)&0xFF00) |
- ((val<<8)&0xFF0000) | (val<<24));
-}
-
-_INLINE_ __u64 blkid_swab64(__u64 val)
-{
- return (blkid_swab32(val >> 32) |
- (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
-}
-#endif
-
-
-
-#ifdef WORDS_BIGENDIAN
-#define blkid_le16(x) blkid_swab16(x)
-#define blkid_le32(x) blkid_swab32(x)
-#define blkid_le64(x) blkid_swab64(x)
-#define blkid_be16(x) (x)
-#define blkid_be32(x) (x)
-#define blkid_be64(x) (x)
-#else
-#define blkid_le16(x) (x)
-#define blkid_le32(x) (x)
-#define blkid_le64(x) (x)
-#define blkid_be16(x) blkid_swab16(x)
-#define blkid_be32(x) blkid_swab32(x)
-#define blkid_be64(x) blkid_swab64(x)
-#endif
-
-#undef _INLINE_
-
-#endif /* _BLKID_PROBE_H */
projects / util-linux / commitdiff