busybox/util-linux/volume_id/sysv.c
Denis Vlasenko c5b737231d volude_id: remove unused fields and functions which were setting them
function                                             old     new   delta
uuidcache_init                                       567     704    +137
findfs_main                                            -     125    +125
packed_usage                                       23662   23694     +32
static.drive_name_string                               -      14     +14
applet_names                                        1815    1822      +7
applet_main                                         1104    1108      +4
volume_id_open_node                                   35      38      +3
applet_nameofs                                       552     554      +2
get_devname_from_label                                78      79      +1
applet_install_loc                                   138     139      +1
volume_id_set_label_unicode16                         31      27      -4
volume_id_set_label_string                            74      70      -4
get_devname_from_uuid                                 63      59      -4
fs1                                                   12       8      -4
volume_id_set_unicode16                              209     202      -7
volume_id_free_buffer                                 71      56     -15
free_volume_id                                        52      37     -15
volume_id_probe_luks                                  97      79     -18
volume_id_set_usage_part                              21       -     -21
volume_id_probe_ufs                                  148     126     -22
volume_id_probe_lsi_mega_raid                        131     108     -23
volume_id_probe_highpoint_45x_raid                   127     104     -23
volume_id_probe_highpoint_37x_raid                    87      63     -24
volume_id_set_usage                                   28       -     -28
volume_id_probe_romfs                                121      93     -28
volume_id_set_label_raw                               30       -     -30
volume_id_probe_promise_fasttrack_raid               174     144     -30
volume_id_set_uuid                                   373     342     -31
volume_id_probe_xfs                                  122      91     -31
volume_id_probe_jfs                                  138     107     -31
volume_id_probe_ocfs2                                139     107     -32
volume_id_probe_lvm1                                  90      58     -32
volume_id_probe_cramfs                               106      63     -43
volume_id_probe_via_raid                             145     101     -44
volume_id_probe_intel_software_raid                  153     108     -45
volume_id_probe_minix                                121      74     -47
volume_id_probe_udf                                  682     632     -50
volume_id_probe_nvidia_raid                          158     108     -50
volume_id_probe_lvm2                                 128      78     -50
volume_id_probe_hpfs                                 117      67     -50
volume_id_probe_ext                                  143      93     -50
volume_id_probe_linux_raid                           191     139     -52
volume_id_probe_sysv                                 244     187     -57
volume_id_probe_silicon_medley_raid                  158      97     -61
usage_to_string                                       64       -     -64
volume_id_probe_linux_swap                           263     198     -65
volume_id_get_buffer                                 372     307     -65
volume_id_probe_iso9660                              412     332     -80
volume_id_probe_hfs_hfsplus                          888     806     -82
volume_id_probe_ntfs                                 396     294    -102
volume_id_probe_vfat                                 980     872    -108
volume_id_probe_reiserfs                             417     268    -149
dev_get_major_minor                                  175       -    -175
uuidcache_check_device                               692     499    -193
volume_id_probe_mac_partition_map                    697       -    -697
------------------------------------------------------------------------------
(add/remove: 2/6 grow/shrink: 8/39 up/down: 326/-2836)      Total: -2510 bytes
   text    data     bss     dec     hex filename
 797220     662    7420  805302   c49b6 busybox_old
 794244     662    7420  802326   c3e16 busybox_unstripped
2008-03-17 09:21:26 +00:00

126 lines
3.2 KiB
C

/*
* 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;
} __attribute__((__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;
} __attribute__((__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 volume_id_probe_sysv(struct volume_id *id, uint64_t off)
{
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);
// 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);
// id->type = "xenix";
goto found;
}
}
return -1;
found:
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
return 0;
}