| /* |
| * volume_id - reads filesystem label and uuid |
| * |
| * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "volume_id_internal.h" |
| |
| #define SYSV_NICINOD 100 |
| #define SYSV_NICFREE 50 |
| |
| struct sysv_super { |
| uint16_t s_isize; |
| uint16_t s_pad0; |
| uint32_t s_fsize; |
| uint16_t s_nfree; |
| uint16_t s_pad1; |
| uint32_t s_free[SYSV_NICFREE]; |
| uint16_t s_ninode; |
| uint16_t s_pad2; |
| uint16_t s_inode[SYSV_NICINOD]; |
| uint8_t s_flock; |
| uint8_t s_ilock; |
| uint8_t s_fmod; |
| uint8_t s_ronly; |
| uint32_t s_time; |
| uint16_t s_dinfo[4]; |
| uint32_t s_tfree; |
| uint16_t s_tinode; |
| uint16_t s_pad3; |
| uint8_t s_fname[6]; |
| uint8_t s_fpack[6]; |
| uint32_t s_fill[12]; |
| uint32_t s_state; |
| uint32_t s_magic; |
| uint32_t s_type; |
| } PACKED; |
| |
| #define XENIX_NICINOD 100 |
| #define XENIX_NICFREE 100 |
| |
| struct xenix_super { |
| uint16_t s_isize; |
| uint32_t s_fsize; |
| uint16_t s_nfree; |
| uint32_t s_free[XENIX_NICFREE]; |
| uint16_t s_ninode; |
| uint16_t s_inode[XENIX_NICINOD]; |
| uint8_t s_flock; |
| uint8_t s_ilock; |
| uint8_t s_fmod; |
| uint8_t s_ronly; |
| uint32_t s_time; |
| uint32_t s_tfree; |
| uint16_t s_tinode; |
| uint16_t s_dinfo[4]; |
| uint8_t s_fname[6]; |
| uint8_t s_fpack[6]; |
| uint8_t s_clean; |
| uint8_t s_fill[371]; |
| uint32_t s_magic; |
| uint32_t s_type; |
| } PACKED; |
| |
| #define SYSV_SUPERBLOCK_BLOCK 0x01 |
| #define SYSV_MAGIC 0xfd187e20 |
| #define XENIX_SUPERBLOCK_BLOCK 0x18 |
| #define XENIX_MAGIC 0x2b5544 |
| #define SYSV_MAX_BLOCKSIZE 0x800 |
| |
| int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/) |
| { |
| #define off ((uint64_t)0) |
| struct sysv_super *vs; |
| struct xenix_super *xs; |
| unsigned boff; |
| |
| dbg("probing at offset 0x%llx", (unsigned long long) off); |
| |
| for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) { |
| vs = volume_id_get_buffer(id, off + (boff * SYSV_SUPERBLOCK_BLOCK), 0x200); |
| if (vs == NULL) |
| return -1; |
| |
| if (vs->s_magic == cpu_to_le32(SYSV_MAGIC) || vs->s_magic == cpu_to_be32(SYSV_MAGIC)) { |
| // volume_id_set_label_raw(id, vs->s_fname, 6); |
| volume_id_set_label_string(id, vs->s_fname, 6); |
| IF_FEATURE_BLKID_TYPE(id->type = "sysv"); |
| goto found; |
| } |
| } |
| |
| for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) { |
| xs = volume_id_get_buffer(id, off + (boff + XENIX_SUPERBLOCK_BLOCK), 0x200); |
| if (xs == NULL) |
| return -1; |
| |
| if (xs->s_magic == cpu_to_le32(XENIX_MAGIC) || xs->s_magic == cpu_to_be32(XENIX_MAGIC)) { |
| // volume_id_set_label_raw(id, xs->s_fname, 6); |
| volume_id_set_label_string(id, xs->s_fname, 6); |
| IF_FEATURE_BLKID_TYPE(id->type = "xenix";) |
| goto found; |
| } |
| } |
| |
| return -1; |
| |
| found: |
| // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); |
| return 0; |
| } |