+ * 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 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 },
+ { "hfsplus", 1, 0, 2, "BD", probe_hfsplus },
+ { "hfsplus", 1, 0, 2, "H+", 0 },
+ { "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 },
+ { "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 },
+ { NULL, 0, 0, 0, NULL, NULL }
+};
+
+/*