From: Denys Vlasenko Date: Tue, 25 Jul 2017 12:22:08 +0000 (+0200) Subject: volume_id: enable minix detection X-Git-Tag: 1_28_0~319 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=73c47f6c41c97fb452b4747088543f2c2166830a;p=oweals%2Fbusybox.git volume_id: enable minix detection function old new delta volume_id_probe_minix - 87 +87 fs2 64 68 +4 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 1/0 up/down: 91/0) Total: 91 bytes Patch by wdlkmpx Signed-off-by: Denys Vlasenko --- diff --git a/util-linux/volume_id/minix.c b/util-linux/volume_id/minix.c new file mode 100644 index 000000000..c934f9ead --- /dev/null +++ b/util-linux/volume_id/minix.c @@ -0,0 +1,91 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2005 Kay Sievers + * + * 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 + */ +//config:config FEATURE_VOLUMEID_MINIX +//config: bool "minix filesystem" +//config: default y +//config: depends on VOLUMEID + +//kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_MINIX) += minix.o + +#include "volume_id_internal.h" + +struct minix_super_block { + uint16_t s_ninodes; + uint16_t s_nzones; + uint16_t s_imap_blocks; + uint16_t s_zmap_blocks; + uint16_t s_firstdatazone; + uint16_t s_log_zone_size; + uint32_t s_max_size; + uint16_t s_magic; + uint16_t s_state; + uint32_t s_zones; +} PACKED; + +/* V3 minix super-block data on disk */ +struct minix3_super_block { + uint32_t s_ninodes; + uint16_t s_pad0; + uint16_t s_imap_blocks; + uint16_t s_zmap_blocks; + uint16_t s_firstdatazone; + uint16_t s_log_zone_size; + uint16_t s_pad1; + uint32_t s_max_size; + uint32_t s_zones; + uint16_t s_magic; + uint16_t s_pad2; + uint16_t s_blocksize; + uint8_t s_disk_version; +} PACKED; + +#define MINIX_SUPERBLOCK_OFFSET 0x400 + +int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*, uint64_t off*/) +{ +#define off ((uint64_t)0) + struct minix_super_block *ms; + struct minix3_super_block *ms3; + + dbg("probing at offset 0x%llx", (unsigned long long) off); + + ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200); + if (ms == NULL) + return -1; + if (ms->s_magic == cpu_to_le16(0x137F)) /* minix V1 fs, 14 char names */ + goto found; + if (ms->s_magic == cpu_to_le16(0x138F)) /* minix V1 fs, 30 char names */ + goto found; + if (ms->s_magic == cpu_to_le16(0x2468)) /* minix V2 fs, 14 char names */ + goto found; + if (ms->s_magic == cpu_to_le16(0x2478)) /* minix V2 fs, 30 char names */ + goto found; + + ms3 = (void*)ms; + if (ms3->s_magic == cpu_to_le16(0x4d5a)) /* minix V3 fs, 60 char names */ + goto found; + + return -1; + + found: +// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); + IF_FEATURE_BLKID_TYPE(id->type = "minix";) + return 0; +} diff --git a/util-linux/volume_id/unused_minix.c b/util-linux/volume_id/unused_minix.c deleted file mode 100644 index 443dbc272..000000000 --- a/util-linux/volume_id/unused_minix.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * volume_id - reads filesystem label and uuid - * - * Copyright (C) 2005 Kay Sievers - * - * 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 - */ - -//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_MINIX) += minix.o - -//config:### config FEATURE_VOLUMEID_MINIX -//config:### bool "minix filesystem" -//config:### default y -//config:### depends on VOLUMEID - -#include "volume_id_internal.h" - -struct minix_super_block { - uint16_t s_ninodes; - uint16_t s_nzones; - uint16_t s_imap_blocks; - uint16_t s_zmap_blocks; - uint16_t s_firstdatazone; - uint16_t s_log_zone_size; - uint32_t s_max_size; - uint16_t s_magic; - uint16_t s_state; - uint32_t s_zones; -} PACKED; - -#define MINIX_SUPERBLOCK_OFFSET 0x400 - -int FAST_FUNC volume_id_probe_minix(struct volume_id *id, uint64_t off) -{ - struct minix_super_block *ms; - - dbg("probing at offset 0x%llx", (unsigned long long) off); - - ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200); - if (ms == NULL) - return -1; - - if (ms->s_magic == cpu_to_le16(0x137f)) { -// id->type_version[0] = '1'; - goto found; - } - - if (ms->s_magic == cpu_to_le16(0x1387)) { -// id->type_version[0] = '1'; - goto found; - } - - if (ms->s_magic == cpu_to_le16(0x2468)) { -// id->type_version[0] = '2'; - goto found; - } - - if (ms->s_magic == cpu_to_le16(0x2478)) { -// id->type_version[0] = '2'; - goto found; - } - - return -1; - - found: -// id->type_version[1] = '\0'; -// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); -// id->type = "minix"; - return 0; -} diff --git a/util-linux/volume_id/volume_id.c b/util-linux/volume_id/volume_id.c index 5bb95994b..85315ced6 100644 --- a/util-linux/volume_id/volume_id.c +++ b/util-linux/volume_id/volume_id.c @@ -42,7 +42,6 @@ #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 diff --git a/util-linux/volume_id/volume_id_internal.h b/util-linux/volume_id/volume_id_internal.h index 759a832e6..0eaea9b34 100644 --- a/util-linux/volume_id/volume_id_internal.h +++ b/util-linux/volume_id/volume_id_internal.h @@ -193,7 +193,7 @@ int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id /*,uint64_t off*/); -//int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*,uint64_t off*/); +int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*, uint64_t off*/); //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/);