diff options
Diffstat (limited to 'e2fsprogs/blkid/probe.c')
| -rw-r--r-- | e2fsprogs/blkid/probe.c | 721 |
1 files changed, 0 insertions, 721 deletions
diff --git a/e2fsprogs/blkid/probe.c b/e2fsprogs/blkid/probe.c deleted file mode 100644 index 8c6e2aa..0000000 --- a/e2fsprogs/blkid/probe.c +++ /dev/null @@ -1,721 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * probe.c - identify a block device by its contents, and return a dev - * struct with the details - * - * 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% - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#ifdef HAVE_SYS_STAT_H -#include <sys/stat.h> -#endif -#ifdef HAVE_SYS_MKDEV_H -#include <sys/mkdev.h> -#endif -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#include "blkidP.h" -#include "../uuid/uuid.h" -#include "probe.h" - -/* - * 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]; - - if (fd < 0) - return -BLKID_ERR_PARAM; - - offset = (blkid_get_dev_size(fd) & ~((blkid_loff_t)65535)) - 65536; - - if (blkid_llseek(fd, offset, 0) < 0 || - read(fd, buf, 4096) != 4096) - return -BLKID_ERR_IO; - - /* Check for magic number */ - if (memcmp("\251+N\374", buf, 4)) - return -BLKID_ERR_PARAM; - - if (!ret_uuid) - return 0; - *ret_uuid = 0; - - /* 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, &md->set_uuid1, 12); - } - return 0; -} - -static void set_uuid(blkid_dev dev, uuid_t uuid) -{ - char str[37]; - - if (!uuid_is_null(uuid)) { - uuid_unparse(uuid, str); - blkid_set_tag(dev, "UUID", str, sizeof(str)); - } -} - -static void get_ext2_info(blkid_dev dev, unsigned char *buf) -{ - 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); -} - -static int probe_ext3(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct ext2_super_block *es; - - es = (struct ext2_super_block *)buf; - - /* Distinguish between jbd and ext2/3 fs */ - if (blkid_le32(es->s_feature_incompat) & - EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) - return -BLKID_ERR_PARAM; - - /* Distinguish between ext3 and ext2 */ - if (!(blkid_le32(es->s_feature_compat) & - EXT3_FEATURE_COMPAT_HAS_JOURNAL)) - return -BLKID_ERR_PARAM; - - get_ext2_info(dev, buf); - - blkid_set_tag(dev, "SEC_TYPE", "ext2", sizeof("ext2")); - - return 0; -} - -static int probe_ext2(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct ext2_super_block *es; - - es = (struct ext2_super_block *)buf; - - /* Distinguish between jbd and ext2/3 fs */ - if (blkid_le32(es->s_feature_incompat) & - EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) - return -BLKID_ERR_PARAM; - - get_ext2_info(dev, buf); - - return 0; -} - -static int probe_jbd(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - 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(dev, buf); - - return 0; -} - -static int probe_vfat(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct vfat_super_block *vs; - char serno[10]; - const char *label = 0; - int label_len = 0; - - vs = (struct vfat_super_block *)buf; - - if (strncmp(vs->vs_label, "NO NAME", 7)) { - char *end = vs->vs_label + sizeof(vs->vs_label) - 1; - - while (*end == ' ' && end >= vs->vs_label) - --end; - if (end >= vs->vs_label) { - label = vs->vs_label; - label_len = end - vs->vs_label + 1; - } - } - - /* We can't just print them as %04X, because they are unaligned */ - sprintf(serno, "%02X%02X-%02X%02X", vs->vs_serno[3], vs->vs_serno[2], - vs->vs_serno[1], vs->vs_serno[0]); - blkid_set_tag(dev, "LABEL", label, label_len); - blkid_set_tag(dev, "UUID", serno, sizeof(serno)); - - return 0; -} - -static int probe_msdos(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct msdos_super_block *ms = (struct msdos_super_block *) buf; - char serno[10]; - const char *label = 0; - int label_len = 0; - - if (strncmp(ms->ms_label, "NO NAME", 7)) { - char *end = ms->ms_label + sizeof(ms->ms_label) - 1; - - while (*end == ' ' && end >= ms->ms_label) - --end; - if (end >= ms->ms_label) { - label = ms->ms_label; - label_len = end - ms->ms_label + 1; - } - } - - /* We can't just print them as %04X, because they are unaligned */ - sprintf(serno, "%02X%02X-%02X%02X", ms->ms_serno[3], ms->ms_serno[2], - ms->ms_serno[1], ms->ms_serno[0]); - blkid_set_tag(dev, "UUID", serno, 0); - blkid_set_tag(dev, "LABEL", label, label_len); - blkid_set_tag(dev, "SEC_TYPE", "msdos", sizeof("msdos")); - - return 0; -} - -static int probe_xfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct xfs_super_block *xs; - const char *label = 0; - - xs = (struct xfs_super_block *)buf; - - if (strlen(xs->xs_fname)) - label = xs->xs_fname; - blkid_set_tag(dev, "LABEL", label, sizeof(xs->xs_fname)); - set_uuid(dev, xs->xs_uuid); - return 0; -} - -static int probe_reiserfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id, unsigned char *buf) -{ - struct reiserfs_super_block *rs = (struct reiserfs_super_block *) buf; - unsigned int blocksize; - const char *label = 0; - - blocksize = blkid_le16(rs->rs_blocksize); - - /* 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 (!strcmp(id->bim_magic, "ReIsEr2Fs") || - !strcmp(id->bim_magic, "ReIsEr3Fs")) { - if (strlen(rs->rs_label)) - label = rs->rs_label; - set_uuid(dev, rs->rs_uuid); - } - blkid_set_tag(dev, "LABEL", label, sizeof(rs->rs_label)); - - return 0; -} - -static int probe_jfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct jfs_super_block *js; - const char *label = 0; - - js = (struct jfs_super_block *)buf; - - if (strlen((char *) js->js_label)) - label = (char *) js->js_label; - blkid_set_tag(dev, "LABEL", label, sizeof(js->js_label)); - set_uuid(dev, js->js_uuid); - return 0; -} - -static int probe_romfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const 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(dev, "LABEL", label, 0); - return 0; -} - -static int probe_cramfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct cramfs_super_block *csb; - const char *label = 0; - - csb = (struct cramfs_super_block *)buf; - - if (strlen((char *) csb->name)) - label = (char *) csb->name; - blkid_set_tag(dev, "LABEL", label, 0); - return 0; -} - -static int probe_swap0(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf __BLKID_ATTR((unused))) -{ - blkid_set_tag(dev, "UUID", 0, 0); - blkid_set_tag(dev, "LABEL", 0, 0); - return 0; -} - -static int probe_swap1(int fd, - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf __BLKID_ATTR((unused))) -{ - struct swap_id_block *sws; - - probe_swap0(fd, cache, dev, 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). - */ - if (lseek(fd, 1024, SEEK_SET) < 0) return 1; - sws = xmalloc(1024); - if (read(fd, sws, 1024) != 1024) { - free(sws); - 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(dev, "LABEL", (const char*)sws->sws_volume, - sizeof(sws->sws_volume)); - if (sws->sws_uuid[0]) - set_uuid(dev, sws->sws_uuid); - } - free(sws); - - return 0; -} - -static const char -* const udf_magic[] = { "BEA01", "BOOT2", "CD001", "CDW02", "NSR02", - "NSR03", "TEA01", 0 }; - -static int probe_udf(int fd, blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev __BLKID_ATTR((unused)), - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf __BLKID_ATTR((unused))) -{ - int j, bs; - struct iso_volume_descriptor isosb; - const char * const * 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++) { - lseek(fd, bs*2048+32768, SEEK_SET); - if (read(fd, (char *)&isosb, sizeof(isosb)) != sizeof(isosb)) - return 1; - if (isosb.id[0]) - break; - } - - /* Scan up to another 64 blocks looking for additional VSD's */ - for (j = 1; j < 64; j++) { - if (j > 1) { - lseek(fd, j*bs*2048+32768, SEEK_SET); - if (read(fd, (char *)&isosb, sizeof(isosb)) - != sizeof(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 (!strncmp(isosb.id, "NSR0", 4)) - return 0; - for (m = udf_magic; *m; m++) - if (!strncmp(*m, isosb.id, 5)) - break; - if (*m == 0) - return 1; - } - return 1; -} - -static int probe_ocfs(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const 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(dev,"SEC_TYPE","ocfs1",sizeof("ocfs1")); - else if (major >= 9) - blkid_set_tag(dev,"SEC_TYPE","ntocfs",sizeof("ntocfs")); - - blkid_set_tag(dev, "LABEL", (const char*)ovl.label, ocfslabellen(ovl)); - blkid_set_tag(dev, "MOUNT", (const char*)ovh.mount, ocfsmountlen(ovh)); - set_uuid(dev, ovl.vol_id); - return 0; -} - -static int probe_ocfs2(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct ocfs2_super_block *osb; - - osb = (struct ocfs2_super_block *)buf; - - blkid_set_tag(dev, "LABEL", (const char*)osb->s_label, sizeof(osb->s_label)); - set_uuid(dev, osb->s_uuid); - return 0; -} - -static int probe_oracleasm(int fd __BLKID_ATTR((unused)), - blkid_cache cache __BLKID_ATTR((unused)), - blkid_dev dev, - const struct blkid_magic *id __BLKID_ATTR((unused)), - unsigned char *buf) -{ - struct oracle_asm_disk_label *dl; - - dl = (struct oracle_asm_disk_label *)buf; - - blkid_set_tag(dev, "LABEL", dl->dl_id, sizeof(dl->dl_id)); - return 0; -} - -/* - * BLKID_BLK_OFFS is at least as large as the highest bim_kboff defined - * in the type_array table below + bim_kbalign. - * - * When probing for a lot of magics, we handle everything in 1kB buffers so - * that we don't have to worry about reading each combination of block sizes. - */ -#define BLKID_BLK_OFFS 64 /* currently reiserfs */ - -/* - * 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 const struct blkid_magic type_array[] = { -/* type kboff sboff len magic probe */ - { "oracleasm", 0, 32, 8, "ORCLDISK", probe_oracleasm }, - { "ntfs", 0, 3, 8, "NTFS ", 0 }, - { "jbd", 1, 0x38, 2, "\123\357", probe_jbd }, - { "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 }, - { "vfat", 0, 0x52, 5, "MSWIN", probe_vfat }, - { "vfat", 0, 0x52, 8, "FAT32 ", probe_vfat }, - { "vfat", 0, 0x36, 5, "MSDOS", probe_msdos }, - { "vfat", 0, 0x36, 8, "FAT16 ", probe_msdos }, - { "vfat", 0, 0x36, 8, "FAT12 ", probe_msdos }, - { "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", 0 }, - { "iso9660", 32, 9, 5, "CDROM", 0 }, - { "jfs", 32, 0, 4, "JFS1", probe_jfs }, - { "hfs", 1, 0, 2, "BD", 0 }, - { "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 }, - { "swap", 0, 0x1ff6, 10, "SWAP-SPACE", probe_swap0 }, - { "swap", 0, 0x1ff6, 10, "SWAPSPACE2", probe_swap1 }, - { "swap", 0, 0x3ff6, 10, "SWAP-SPACE", probe_swap0 }, - { "swap", 0, 0x3ff6, 10, "SWAPSPACE2", probe_swap1 }, - { "swap", 0, 0x7ff6, 10, "SWAP-SPACE", probe_swap0 }, - { "swap", 0, 0x7ff6, 10, "SWAPSPACE2", probe_swap1 }, - { "swap", 0, 0xfff6, 10, "SWAP-SPACE", probe_swap0 }, - { "swap", 0, 0xfff6, 10, "SWAPSPACE2", 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 }, - { 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) -{ - const struct blkid_magic *id; - unsigned char *bufs[BLKID_BLK_OFFS + 1], *buf; - const char *type; - struct stat st; - time_t diff, now; - int fd, idx; - - if (!dev) - return NULL; - - now = time(0); - diff = now - dev->bid_time; - - if ((now < 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 (time since last check %lu)\n", - dev->bid_name, diff)); - - if (((fd = open(dev->bid_name, O_RDONLY)) < 0) || - (fstat(fd, &st) < 0)) { - if (errno == ENXIO || errno == ENODEV || errno == ENOENT) { - blkid_free_dev(dev); - return NULL; - } - /* 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; - } - - memset(bufs, 0, sizeof(bufs)); - - /* - * 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(fd, uuid) == 0) { - set_uuid(dev, uuid); - 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; - - idx = id->bim_kboff + (id->bim_sboff >> 10); - if (idx > BLKID_BLK_OFFS || idx < 0) - continue; - buf = bufs[idx]; - if (!buf) { - if (lseek(fd, idx << 10, SEEK_SET) < 0) - continue; - - buf = xmalloc(1024); - - if (read(fd, buf, 1024) != 1024) { - free(buf); - continue; - } - bufs[idx] = buf; - } - - if (memcmp(id->bim_magic, buf + (id->bim_sboff&0x3ff), - id->bim_len)) - continue; - - if ((id->bim_probe == NULL) || - (id->bim_probe(fd, cache, dev, id, buf) == 0)) { - type = id->bim_type; - goto found_type; - } - } - - if (!id->bim_type && dev->bid_type) { - /* - * Zap the device filesystem type and try again - */ - blkid_set_tag(dev, "TYPE", 0, 0); - blkid_set_tag(dev, "SEC_TYPE", 0, 0); - blkid_set_tag(dev, "LABEL", 0, 0); - blkid_set_tag(dev, "UUID", 0, 0); - goto try_again; - } - - if (!dev->bid_type) { - blkid_free_dev(dev); - return NULL; - } - -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, st.st_rdev, type)); - } - - close(fd); - - return dev; -} - -int blkid_known_fstype(const char *fstype) -{ - const struct blkid_magic *id; - - for (id = type_array; id->bim_type; id++) { - if (strcmp(fstype, id->bim_type) == 0) - return 1; - } - return 0; -} - -#ifdef TEST_PROGRAM -int main(int argc, char **argv) -{ - blkid_dev dev; - blkid_cache cache; - int ret; - - blkid_debug_mask = DEBUG_ALL; - 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, bb_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("%s is type %s\n", argv[1], dev->bid_type ? - dev->bid_type : "(null)"); - if (dev->bid_label) - printf("\tlabel is '%s'\n", dev->bid_label); - if (dev->bid_uuid) - printf("\tuuid is %s\n", dev->bid_uuid); - - blkid_free_dev(dev); - return 0; -} -#endif |