busybox/util-linux/volume_id/romfs.c
Denys Vlasenko f560422fa0 Big cleanup in config help and description
Redundant help texts (one which only repeats the description)
are deleted.

Descriptions and help texts are trimmed.

Some config options are moved, even across menus.

No config option _names_ are changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10 14:58:54 +01:00

63 lines
1.7 KiB
C

/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 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
*/
//kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_ROMFS) += romfs.o
//config:config FEATURE_VOLUMEID_ROMFS
//config: bool "romfs filesystem"
//config: default y
//config: depends on VOLUMEID
#include "volume_id_internal.h"
struct romfs_super {
uint8_t magic[8];
uint32_t size;
uint32_t checksum;
uint8_t name[];
} PACKED;
int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct romfs_super *rfs;
dbg("probing at offset 0x%llx", (unsigned long long) off);
rfs = volume_id_get_buffer(id, off, 0x200);
if (rfs == NULL)
return -1;
if (memcmp(rfs->magic, "-rom1fs-", 4) == 0) {
size_t len = strlen((char *)rfs->name);
if (len) {
// volume_id_set_label_raw(id, rfs->name, len);
volume_id_set_label_string(id, rfs->name, len);
}
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
IF_FEATURE_BLKID_TYPE(id->type = "romfs";)
return 0;
}
return -1;
}