volume_id: rename subdirectory

1 files changed, 0 insertions, 349 deletions

diff --git a/extras/volume_id/libvolume_id/fat.c b/extras/volume_id/libvolume_id/fat.c
deleted file mode 100644
index 4840a2a23c..0000000000
--- a/extras/volume_id/libvolume_id/fat.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * volume_id - reads filesystem label and uuid
- *
- * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
- *
- *	This program is free software; you can redistribute it and/or modify it
- *	under the terms of the GNU General Public License as published by the
- *	Free Software Foundation version 2 of the License.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <ctype.h>
-
-#include "libvolume_id.h"
-#include "util.h"
-
-#define FAT12_MAX			0xff5
-#define FAT16_MAX			0xfff5
-#define FAT_ATTR_VOLUME_ID		0x08
-#define FAT_ATTR_DIR			0x10
-#define FAT_ATTR_LONG_NAME		0x0f
-#define FAT_ATTR_MASK			0x3f
-#define FAT_ENTRY_FREE			0xe5
-
-struct vfat_super_block {
-	uint8_t		boot_jump[3];
-	uint8_t		sysid[8];
-	uint16_t	sector_size;
-	uint8_t		sectors_per_cluster;
-	uint16_t	reserved;
-	uint8_t		fats;
-	uint16_t	dir_entries;
-	uint16_t	sectors;
-	uint8_t		media;
-	uint16_t	fat_length;
-	uint16_t	secs_track;
-	uint16_t	heads;
-	uint32_t	hidden;
-	uint32_t	total_sect;
-	union {
-		struct fat_super_block {
-			uint8_t		unknown[3];
-			uint8_t		serno[4];
-			uint8_t		label[11];
-			uint8_t		magic[8];
-			uint8_t		dummy2[192];
-			uint8_t		pmagic[2];
-		} PACKED fat;
-		struct fat32_super_block {
-			uint32_t	fat32_length;
-			uint16_t	flags;
-			uint8_t		version[2];
-			uint32_t	root_cluster;
-			uint16_t	insfo_sector;
-			uint16_t	backup_boot;
-			uint16_t	reserved2[6];
-			uint8_t		unknown[3];
-			uint8_t		serno[4];
-			uint8_t		label[11];
-			uint8_t		magic[8];
-			uint8_t		dummy2[164];
-			uint8_t		pmagic[2];
-		} PACKED fat32;
-	} PACKED type;
-} PACKED;
-
-struct vfat_dir_entry {
-	uint8_t		name[11];
-	uint8_t		attr;
-	uint16_t	time_creat;
-	uint16_t	date_creat;
-	uint16_t	time_acc;
-	uint16_t	date_acc;
-	uint16_t	cluster_high;
-	uint16_t	time_write;
-	uint16_t	date_write;
-	uint16_t	cluster_low;
-	uint32_t	size;
-} PACKED;
-
-static uint8_t *get_attr_volume_id(struct vfat_dir_entry *dir, unsigned int count)
-{
-	unsigned int i;
-
-	for (i = 0; i < count; i++) {
-		/* end marker */
-		if (dir[i].name[0] == 0x00) {
-			dbg("end of dir");
-			break;
-		}
-
-		/* empty entry */
-		if (dir[i].name[0] == FAT_ENTRY_FREE)
-			continue;
-
-		/* long name */
-		if ((dir[i].attr & FAT_ATTR_MASK) == FAT_ATTR_LONG_NAME)
-			continue;
-
-		if ((dir[i].attr & (FAT_ATTR_VOLUME_ID | FAT_ATTR_DIR)) == FAT_ATTR_VOLUME_ID) {
-			/* labels do not have file data */
-			if (dir[i].cluster_high != 0 || dir[i].cluster_low != 0)
-				continue;
-
-			dbg("found ATTR_VOLUME_ID id in root dir");
-			return dir[i].name;
-		}
-
-		dbg("skip dir entry");
-	}
-
-	return NULL;
-}
-
-int volume_id_probe_vfat(struct volume_id *id, uint64_t off)
-{
-	struct vfat_super_block *vs;
-	struct vfat_dir_entry *dir;
-	uint16_t sector_size;
-	uint16_t dir_entries;
-	uint32_t sect_count;
-	uint16_t reserved;
-	uint32_t fat_size;
-	uint32_t root_cluster;
-	uint32_t dir_size;
-	uint32_t cluster_count;
-	uint16_t fat_length;
-	uint32_t fat32_length;
-	uint64_t root_start;
-	uint32_t start_data_sect;
-	uint16_t root_dir_entries;
-	uint8_t *buf;
-	uint32_t buf_size;
-	uint8_t *label = NULL;
-	uint32_t next;
-	int maxloop;
-
-	dbg("probing at offset 0x%llx", (unsigned long long) off);
-
-	vs = (struct vfat_super_block *) volume_id_get_buffer(id, off, 0x200);
-	if (vs == NULL)
-		return -1;
-
-	/* believe only that's fat, don't trust the version
-	 * the cluster_count will tell us
-	 */
-	if (memcmp(vs->sysid, "NTFS", 4) == 0)
-		return -1;
-
-	if (memcmp(vs->type.fat32.magic, "MSWIN", 5) == 0)
-		goto magic;
-
-	if (memcmp(vs->type.fat32.magic, "FAT32   ", 8) == 0)
-		goto magic;
-
-	if (memcmp(vs->type.fat.magic, "FAT16   ", 8) == 0)
-		goto magic;
-
-	if (memcmp(vs->type.fat.magic, "MSDOS", 5) == 0)
-		goto magic;
-
-	if (memcmp(vs->type.fat.magic, "FAT12   ", 8) == 0)
-		goto magic;
-
-	/* some old floppies don't have a magic, so we expect the boot code to match */
-
-	/* boot jump address check */
-	if ((vs->boot_jump[0] != 0xeb || vs->boot_jump[2] != 0x90) &&
-	     vs->boot_jump[0] != 0xe9)
-		return -1;
-
-magic:
-	/* reserverd sector count */
-	if (!vs->reserved)
-		return -1;
-
-	/* fat count*/
-	if (!vs->fats)
-		return -1;
-
-	/* media check */
-	if (vs->media < 0xf8 && vs->media != 0xf0)
-		return -1;
-
-	/* cluster size check*/	
-	if (vs->sectors_per_cluster == 0 ||
-	    (vs->sectors_per_cluster & (vs->sectors_per_cluster-1)))
-		return -1;
-
-	/* sector size check */
-	sector_size = le16_to_cpu(vs->sector_size);
-	if (sector_size != 0x200 && sector_size != 0x400 &&
-	    sector_size != 0x800 && sector_size != 0x1000)
-		return -1;
-
-	dbg("sector_size 0x%x", sector_size);
-	dbg("sectors_per_cluster 0x%x", vs->sectors_per_cluster);
-
-	dir_entries = le16_to_cpu(vs->dir_entries);
-	reserved = le16_to_cpu(vs->reserved);
-	dbg("reserved 0x%x", reserved);
-
-	sect_count = le16_to_cpu(vs->sectors);
-	if (sect_count == 0)
-		sect_count = le32_to_cpu(vs->total_sect);
-	dbg("sect_count 0x%x", sect_count);
-
-	fat_length = le16_to_cpu(vs->fat_length);
-	dbg("fat_length 0x%x", fat_length);
-	fat32_length = le32_to_cpu(vs->type.fat32.fat32_length);
-	dbg("fat32_length 0x%x", fat32_length);
-
-	if (fat_length)
-		fat_size = fat_length * vs->fats;
-	else if (fat32_length)
-		fat_size = fat32_length * vs->fats;
-	else
-		return -1;
-	dbg("fat_size 0x%x", fat_size);
-
-	dir_size = ((dir_entries * sizeof(struct vfat_dir_entry)) +
-			(sector_size-1)) / sector_size;
-	dbg("dir_size 0x%x", dir_size);
-
-	cluster_count = sect_count - (reserved + fat_size + dir_size);
-	cluster_count /= vs->sectors_per_cluster;
-	dbg("cluster_count 0x%x", cluster_count);
-
-	/* must be FAT32 */
-	if (!fat_length && fat32_length)
-		goto fat32;
-
-	/* cluster_count tells us the format */
-	if (cluster_count < FAT12_MAX)
-		strcpy(id->type_version, "FAT12");
-	else if (cluster_count < FAT16_MAX)
-		strcpy(id->type_version, "FAT16");
-	else
-		goto fat32;
-
-	/* the label may be an attribute in the root directory */
-	root_start = (reserved + fat_size) * sector_size;
-	dbg("root dir start 0x%llx", (unsigned long long) root_start);
-	root_dir_entries = le16_to_cpu(vs->dir_entries);
-	dbg("expected entries 0x%x", root_dir_entries);
-
-	buf_size = root_dir_entries * sizeof(struct vfat_dir_entry);
-	buf = volume_id_get_buffer(id, off + root_start, buf_size);
-	if (buf == NULL)
-		goto found;
-
-	dir = (struct vfat_dir_entry*) buf;
-
-	label = get_attr_volume_id(dir, root_dir_entries);
-
-	vs = (struct vfat_super_block *) volume_id_get_buffer(id, off, 0x200);
-	if (vs == NULL)
-		return -1;
-
-	if (label != NULL && memcmp(label, "NO NAME    ", 11) != 0) {
-		volume_id_set_label_raw(id, label, 11);
-		volume_id_set_label_string(id, label, 11);
-	} else if (memcmp(vs->type.fat.label, "NO NAME    ", 11) != 0) {
-		volume_id_set_label_raw(id, vs->type.fat.label, 11);
-		volume_id_set_label_string(id, vs->type.fat.label, 11);
-	}
-	volume_id_set_uuid(id, vs->type.fat.serno, UUID_DOS);
-	goto found;
-
-fat32:
-	strcpy(id->type_version, "FAT32");
-
-	/* FAT32 root dir is a cluster chain like any other directory */
-	buf_size = vs->sectors_per_cluster * sector_size;
-	root_cluster = le32_to_cpu(vs->type.fat32.root_cluster);
-	dbg("root dir cluster %u", root_cluster);
-	start_data_sect = reserved + fat_size;
-
-	next = root_cluster;
-	maxloop = 100;
-	while (--maxloop) {
-		uint32_t next_sect_off;
-		uint64_t next_off;
-		uint64_t fat_entry_off;
-		int count;
-
-		dbg("next cluster %u", next);
-		next_sect_off = (next - 2) * vs->sectors_per_cluster;
-		next_off = (start_data_sect + next_sect_off) * sector_size;
-		dbg("cluster offset 0x%llx", (unsigned long long) next_off);
-
-		/* get cluster */
-		buf = volume_id_get_buffer(id, off + next_off, buf_size);
-		if (buf == NULL)
-			goto found;
-
-		dir = (struct vfat_dir_entry*) buf;
-		count = buf_size / sizeof(struct vfat_dir_entry);
-		dbg("expected entries 0x%x", count);
-
-		label = get_attr_volume_id(dir, count);
-		if (label)
-			break;
-
-		/* get FAT entry */
-		fat_entry_off = (reserved * sector_size) + (next * sizeof(uint32_t));
-		buf = volume_id_get_buffer(id, off + fat_entry_off, buf_size);
-		if (buf == NULL)
-			goto found;
-
-		/* set next cluster */
-		next = le32_to_cpu(*((uint32_t *) buf) & 0x0fffffff);
-		if (next == 0)
-			break;
-	}
-	if (maxloop == 0)
-		dbg("reached maximum follow count of root cluster chain, give up");
-
-	vs = (struct vfat_super_block *) volume_id_get_buffer(id, off, 0x200);
-	if (vs == NULL)
-		return -1;
-
-	if (label != NULL && memcmp(label, "NO NAME    ", 11) != 0) {
-		volume_id_set_label_raw(id, label, 11);
-		volume_id_set_label_string(id, label, 11);
-	} else if (memcmp(vs->type.fat32.label, "NO NAME    ", 11) != 0) {
-		volume_id_set_label_raw(id, vs->type.fat32.label, 11);
-		volume_id_set_label_string(id, vs->type.fat32.label, 11);
-	}
-	volume_id_set_uuid(id, vs->type.fat32.serno, UUID_DOS);
-
-found:
-	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
-	id->type = "vfat";
-
-	return 0;
-}