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Diffstat (limited to 'ANDROID_3.4.5/fs/hpfs/map.c')
-rw-r--r--ANDROID_3.4.5/fs/hpfs/map.c287
1 files changed, 0 insertions, 287 deletions
diff --git a/ANDROID_3.4.5/fs/hpfs/map.c b/ANDROID_3.4.5/fs/hpfs/map.c
deleted file mode 100644
index a7908213..00000000
--- a/ANDROID_3.4.5/fs/hpfs/map.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * linux/fs/hpfs/map.c
- *
- * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
- *
- * mapping structures to memory with some minimal checks
- */
-
-#include "hpfs_fn.h"
-
-unsigned *hpfs_map_dnode_bitmap(struct super_block *s, struct quad_buffer_head *qbh)
-{
- return hpfs_map_4sectors(s, hpfs_sb(s)->sb_dmap, qbh, 0);
-}
-
-unsigned int *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
- struct quad_buffer_head *qbh, char *id)
-{
- secno sec;
- if (hpfs_sb(s)->sb_chk) if (bmp_block * 16384 > hpfs_sb(s)->sb_fs_size) {
- hpfs_error(s, "hpfs_map_bitmap called with bad parameter: %08x at %s", bmp_block, id);
- return NULL;
- }
- sec = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
- if (!sec || sec > hpfs_sb(s)->sb_fs_size-4) {
- hpfs_error(s, "invalid bitmap block pointer %08x -> %08x at %s", bmp_block, sec, id);
- return NULL;
- }
- return hpfs_map_4sectors(s, sec, qbh, 4);
-}
-
-/*
- * Load first code page into kernel memory, return pointer to 256-byte array,
- * first 128 bytes are uppercasing table for chars 128-255, next 128 bytes are
- * lowercasing table
- */
-
-unsigned char *hpfs_load_code_page(struct super_block *s, secno cps)
-{
- struct buffer_head *bh;
- secno cpds;
- unsigned cpi;
- unsigned char *ptr;
- unsigned char *cp_table;
- int i;
- struct code_page_data *cpd;
- struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0);
- if (!cp) return NULL;
- if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) {
- printk("HPFS: Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic));
- brelse(bh);
- return NULL;
- }
- if (!le32_to_cpu(cp->n_code_pages)) {
- printk("HPFS: n_code_pages == 0\n");
- brelse(bh);
- return NULL;
- }
- cpds = le32_to_cpu(cp->array[0].code_page_data);
- cpi = le16_to_cpu(cp->array[0].index);
- brelse(bh);
-
- if (cpi >= 3) {
- printk("HPFS: Code page index out of array\n");
- return NULL;
- }
-
- if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL;
- if (le16_to_cpu(cpd->offs[cpi]) > 0x178) {
- printk("HPFS: Code page index out of sector\n");
- brelse(bh);
- return NULL;
- }
- ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6;
- if (!(cp_table = kmalloc(256, GFP_KERNEL))) {
- printk("HPFS: out of memory for code page table\n");
- brelse(bh);
- return NULL;
- }
- memcpy(cp_table, ptr, 128);
- brelse(bh);
-
- /* Try to build lowercasing table from uppercasing one */
-
- for (i=128; i<256; i++) cp_table[i]=i;
- for (i=128; i<256; i++) if (cp_table[i-128]!=i && cp_table[i-128]>=128)
- cp_table[cp_table[i-128]] = i;
-
- return cp_table;
-}
-
-secno *hpfs_load_bitmap_directory(struct super_block *s, secno bmp)
-{
- struct buffer_head *bh;
- int n = (hpfs_sb(s)->sb_fs_size + 0x200000 - 1) >> 21;
- int i;
- secno *b;
- if (!(b = kmalloc(n * 512, GFP_KERNEL))) {
- printk("HPFS: can't allocate memory for bitmap directory\n");
- return NULL;
- }
- for (i=0;i<n;i++) {
- secno *d = hpfs_map_sector(s, bmp+i, &bh, n - i - 1);
- if (!d) {
- kfree(b);
- return NULL;
- }
- memcpy((char *)b + 512 * i, d, 512);
- brelse(bh);
- }
- return b;
-}
-
-/*
- * Load fnode to memory
- */
-
-struct fnode *hpfs_map_fnode(struct super_block *s, ino_t ino, struct buffer_head **bhp)
-{
- struct fnode *fnode;
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ino, 1, "fnode")) {
- return NULL;
- }
- if ((fnode = hpfs_map_sector(s, ino, bhp, FNODE_RD_AHEAD))) {
- if (hpfs_sb(s)->sb_chk) {
- struct extended_attribute *ea;
- struct extended_attribute *ea_end;
- if (le32_to_cpu(fnode->magic) != FNODE_MAGIC) {
- hpfs_error(s, "bad magic on fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- if (!fnode->dirflag) {
- if ((unsigned)fnode->btree.n_used_nodes + (unsigned)fnode->btree.n_free_nodes !=
- (fnode->btree.internal ? 12 : 8)) {
- hpfs_error(s,
- "bad number of nodes in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- if (le16_to_cpu(fnode->btree.first_free) !=
- 8 + fnode->btree.n_used_nodes * (fnode->btree.internal ? 8 : 12)) {
- hpfs_error(s,
- "bad first_free pointer in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- }
- if (le16_to_cpu(fnode->ea_size_s) && (le16_to_cpu(fnode->ea_offs) < 0xc4 ||
- le16_to_cpu(fnode->ea_offs) + le16_to_cpu(fnode->acl_size_s) + le16_to_cpu(fnode->ea_size_s) > 0x200)) {
- hpfs_error(s,
- "bad EA info in fnode %08lx: ea_offs == %04x ea_size_s == %04x",
- (unsigned long)ino,
- le16_to_cpu(fnode->ea_offs), le16_to_cpu(fnode->ea_size_s));
- goto bail;
- }
- ea = fnode_ea(fnode);
- ea_end = fnode_end_ea(fnode);
- while (ea != ea_end) {
- if (ea > ea_end) {
- hpfs_error(s, "bad EA in fnode %08lx",
- (unsigned long)ino);
- goto bail;
- }
- ea = next_ea(ea);
- }
- }
- }
- return fnode;
- bail:
- brelse(*bhp);
- return NULL;
-}
-
-struct anode *hpfs_map_anode(struct super_block *s, anode_secno ano, struct buffer_head **bhp)
-{
- struct anode *anode;
- if (hpfs_sb(s)->sb_chk) if (hpfs_chk_sectors(s, ano, 1, "anode")) return NULL;
- if ((anode = hpfs_map_sector(s, ano, bhp, ANODE_RD_AHEAD)))
- if (hpfs_sb(s)->sb_chk) {
- if (le32_to_cpu(anode->magic) != ANODE_MAGIC) {
- hpfs_error(s, "bad magic on anode %08x", ano);
- goto bail;
- }
- if (le32_to_cpu(anode->self) != ano) {
- hpfs_error(s, "self pointer invalid on anode %08x", ano);
- goto bail;
- }
- if ((unsigned)anode->btree.n_used_nodes + (unsigned)anode->btree.n_free_nodes !=
- (anode->btree.internal ? 60 : 40)) {
- hpfs_error(s, "bad number of nodes in anode %08x", ano);
- goto bail;
- }
- if (le16_to_cpu(anode->btree.first_free) !=
- 8 + anode->btree.n_used_nodes * (anode->btree.internal ? 8 : 12)) {
- hpfs_error(s, "bad first_free pointer in anode %08x", ano);
- goto bail;
- }
- }
- return anode;
- bail:
- brelse(*bhp);
- return NULL;
-}
-
-/*
- * Load dnode to memory and do some checks
- */
-
-struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno,
- struct quad_buffer_head *qbh)
-{
- struct dnode *dnode;
- if (hpfs_sb(s)->sb_chk) {
- if (hpfs_chk_sectors(s, secno, 4, "dnode")) return NULL;
- if (secno & 3) {
- hpfs_error(s, "dnode %08x not byte-aligned", secno);
- return NULL;
- }
- }
- if ((dnode = hpfs_map_4sectors(s, secno, qbh, DNODE_RD_AHEAD)))
- if (hpfs_sb(s)->sb_chk) {
- unsigned p, pp = 0;
- unsigned char *d = (unsigned char *)dnode;
- int b = 0;
- if (le32_to_cpu(dnode->magic) != DNODE_MAGIC) {
- hpfs_error(s, "bad magic on dnode %08x", secno);
- goto bail;
- }
- if (le32_to_cpu(dnode->self) != secno)
- hpfs_error(s, "bad self pointer on dnode %08x self = %08x", secno, le32_to_cpu(dnode->self));
- /* Check dirents - bad dirents would cause infinite
- loops or shooting to memory */
- if (le32_to_cpu(dnode->first_free) > 2048) {
- hpfs_error(s, "dnode %08x has first_free == %08x", secno, le32_to_cpu(dnode->first_free));
- goto bail;
- }
- for (p = 20; p < le32_to_cpu(dnode->first_free); p += d[p] + (d[p+1] << 8)) {
- struct hpfs_dirent *de = (struct hpfs_dirent *)((char *)dnode + p);
- if (le16_to_cpu(de->length) > 292 || (le16_to_cpu(de->length) < 32) || (le16_to_cpu(de->length) & 3) || p + le16_to_cpu(de->length) > 2048) {
- hpfs_error(s, "bad dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- if (((31 + de->namelen + de->down*4 + 3) & ~3) != le16_to_cpu(de->length)) {
- if (((31 + de->namelen + de->down*4 + 3) & ~3) < le16_to_cpu(de->length) && s->s_flags & MS_RDONLY) goto ok;
- hpfs_error(s, "namelen does not match dirent size in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- ok:
- if (hpfs_sb(s)->sb_chk >= 2) b |= 1 << de->down;
- if (de->down) if (de_down_pointer(de) < 0x10) {
- hpfs_error(s, "bad down pointer in dnode %08x, dirent %03x, last %03x", secno, p, pp);
- goto bail;
- }
- pp = p;
-
- }
- if (p != le32_to_cpu(dnode->first_free)) {
- hpfs_error(s, "size on last dirent does not match first_free; dnode %08x", secno);
- goto bail;
- }
- if (d[pp + 30] != 1 || d[pp + 31] != 255) {
- hpfs_error(s, "dnode %08x does not end with \\377 entry", secno);
- goto bail;
- }
- if (b == 3) printk("HPFS: warning: unbalanced dnode tree, dnode %08x; see hpfs.txt 4 more info\n", secno);
- }
- return dnode;
- bail:
- hpfs_brelse4(qbh);
- return NULL;
-}
-
-dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino)
-{
- struct buffer_head *bh;
- struct fnode *fnode;
- dnode_secno dno;
-
- fnode = hpfs_map_fnode(s, ino, &bh);
- if (!fnode)
- return 0;
-
- dno = le32_to_cpu(fnode->u.external[0].disk_secno);
- brelse(bh);
- return dno;
-}
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