mirror of
https://github.com/sheumann/hush.git
synced 2024-08-15 02:29:00 +00:00
Some are fixing real bugs. function old new delta syslogd_main 938 958 +20 get_signum 136 143 +7 obj_load 777 782 +5 recv_from_to 210 214 +4 get_next_block 1795 1799 +4 display_topmem_process_list 1117 1121 +4 logread_main 484 487 +3 buffer_fill_and_print 73 76 +3 kill_main 687 689 +2 ll_remember_index 240 241 +1 do_stats 452 453 +1 if_readconf 166 165 -1 display_process_list 1192 1191 -1 run_applet_and_exit 507 505 -2 print_signames 33 31 -2 parse_one_line 1092 1090 -2 find_out_spec 57 55 -2 add_ksymoops_symbols 421 419 -2 ash_main 1407 1402 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17) Total: 37 bytes
244 lines
6.1 KiB
C
244 lines
6.1 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"
|
|
|
|
|
|
/* Some detection routines do not set label or uuid anyway,
|
|
* so they are disabled. */
|
|
|
|
/* Looks for partitions, we don't use it: */
|
|
#define ENABLE_FEATURE_VOLUMEID_MAC 0
|
|
/* #define ENABLE_FEATURE_VOLUMEID_MSDOS 0 - NB: this one
|
|
* was not properly added to probe table anyway - ??! */
|
|
|
|
/* None of RAIDs have label or uuid, except LinuxRAID: */
|
|
#define ENABLE_FEATURE_VOLUMEID_HIGHPOINTRAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_ISWRAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_LSIRAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_LVM 0
|
|
#define ENABLE_FEATURE_VOLUMEID_NVIDIARAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_PROMISERAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_SILICONRAID 0
|
|
#define ENABLE_FEATURE_VOLUMEID_VIARAID 0
|
|
|
|
/* These filesystems also have no label or uuid: */
|
|
#define ENABLE_FEATURE_VOLUMEID_MINIX 0
|
|
#define ENABLE_FEATURE_VOLUMEID_HPFS 0
|
|
#define ENABLE_FEATURE_VOLUMEID_UFS 0
|
|
|
|
|
|
typedef int (*raid_probe_fptr)(struct volume_id *id, uint64_t off, uint64_t size);
|
|
typedef int (*probe_fptr)(struct volume_id *id, uint64_t off);
|
|
|
|
static const raid_probe_fptr raid1[] = {
|
|
#if ENABLE_FEATURE_VOLUMEID_LINUXRAID
|
|
volume_id_probe_linux_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_ISWRAID
|
|
volume_id_probe_intel_software_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_LSIRAID
|
|
volume_id_probe_lsi_mega_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_VIARAID
|
|
volume_id_probe_via_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_SILICONRAID
|
|
volume_id_probe_silicon_medley_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_NVIDIARAID
|
|
volume_id_probe_nvidia_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_PROMISERAID
|
|
volume_id_probe_promise_fasttrack_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_HIGHPOINTRAID
|
|
volume_id_probe_highpoint_45x_raid,
|
|
#endif
|
|
};
|
|
|
|
static const probe_fptr raid2[] = {
|
|
#if ENABLE_FEATURE_VOLUMEID_LVM
|
|
volume_id_probe_lvm1,
|
|
volume_id_probe_lvm2,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_HIGHPOINTRAID
|
|
volume_id_probe_highpoint_37x_raid,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_LUKS
|
|
volume_id_probe_luks,
|
|
#endif
|
|
};
|
|
|
|
/* signature in the first block, only small buffer needed */
|
|
static const probe_fptr fs1[] = {
|
|
#if ENABLE_FEATURE_VOLUMEID_FAT
|
|
volume_id_probe_vfat,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_MAC
|
|
volume_id_probe_mac_partition_map,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_XFS
|
|
volume_id_probe_xfs,
|
|
#endif
|
|
};
|
|
|
|
/* fill buffer with maximum */
|
|
static const probe_fptr fs2[] = {
|
|
#if ENABLE_FEATURE_VOLUMEID_LINUXSWAP
|
|
volume_id_probe_linux_swap,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_EXT
|
|
volume_id_probe_ext,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_REISERFS
|
|
volume_id_probe_reiserfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_JFS
|
|
volume_id_probe_jfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_UDF
|
|
volume_id_probe_udf,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_ISO9660
|
|
volume_id_probe_iso9660,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_HFS
|
|
volume_id_probe_hfs_hfsplus,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_UFS
|
|
volume_id_probe_ufs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_NTFS
|
|
volume_id_probe_ntfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_CRAMFS
|
|
volume_id_probe_cramfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_ROMFS
|
|
volume_id_probe_romfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_HPFS
|
|
volume_id_probe_hpfs,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_SYSV
|
|
volume_id_probe_sysv,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_MINIX
|
|
volume_id_probe_minix,
|
|
#endif
|
|
#if ENABLE_FEATURE_VOLUMEID_OCFS2
|
|
volume_id_probe_ocfs2,
|
|
#endif
|
|
};
|
|
|
|
int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size)
|
|
{
|
|
unsigned i;
|
|
|
|
if (id == NULL)
|
|
return -EINVAL;
|
|
|
|
/* probe for raid first, cause fs probes may be successful on raid members */
|
|
if (size) {
|
|
for (i = 0; i < ARRAY_SIZE(raid1); i++)
|
|
if (raid1[i](id, off, size) == 0)
|
|
goto ret;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(raid2); i++)
|
|
if (raid2[i](id, off) == 0)
|
|
goto ret;
|
|
|
|
/* signature in the first block, only small buffer needed */
|
|
for (i = 0; i < ARRAY_SIZE(fs1); i++)
|
|
if (fs1[i](id, off) == 0)
|
|
goto ret;
|
|
|
|
/* fill buffer with maximum */
|
|
volume_id_get_buffer(id, 0, SB_BUFFER_SIZE);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fs2); i++)
|
|
if (fs2[i](id, off) == 0)
|
|
goto ret;
|
|
return -1;
|
|
|
|
ret:
|
|
/* If the filestystem in recognized, we free the allocated buffers,
|
|
otherwise they will stay in place for the possible next probe call */
|
|
volume_id_free_buffer(id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* open volume by device node */
|
|
struct volume_id *volume_id_open_node(const char *path)
|
|
{
|
|
struct volume_id *id;
|
|
int fd;
|
|
|
|
fd = open(path, O_RDONLY);
|
|
if (fd < 0)
|
|
return NULL;
|
|
id = xzalloc(sizeof(struct volume_id));
|
|
id->fd = fd;
|
|
///* close fd on device close */
|
|
//id->fd_close = 1;
|
|
|
|
return id;
|
|
}
|
|
|
|
#ifdef UNUSED
|
|
/* open volume by major/minor */
|
|
struct volume_id *volume_id_open_dev_t(dev_t devt)
|
|
{
|
|
struct volume_id *id;
|
|
char *tmp_node[VOLUME_ID_PATH_MAX];
|
|
|
|
tmp_node = xasprintf("/dev/.volume_id-%u-%u-%u",
|
|
(unsigned)getpid(), (unsigned)major(devt), (unsigned)minor(devt));
|
|
|
|
/* create temporary node to open block device */
|
|
unlink(tmp_node);
|
|
if (mknod(tmp_node, (S_IFBLK | 0600), devt) != 0)
|
|
bb_perror_msg_and_die("cannot mknod(%s)", tmp_node);
|
|
|
|
id = volume_id_open_node(tmp_node);
|
|
unlink(tmp_node);
|
|
free(tmp_node);
|
|
return id;
|
|
}
|
|
#endif
|
|
|
|
void free_volume_id(struct volume_id *id)
|
|
{
|
|
if (id == NULL)
|
|
return;
|
|
|
|
//if (id->fd_close != 0) - always true
|
|
close(id->fd);
|
|
volume_id_free_buffer(id);
|
|
#ifdef UNUSED_PARTITION_CODE
|
|
free(id->partitions);
|
|
#endif
|
|
free(id);
|
|
}
|