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;
}
void hpfs_load_hotfix_map(struct super_block *s, struct hpfs_spare_block *spareblock)
{
struct quad_buffer_head qbh;
u32 *directory;
u32 n_hotfixes, n_used_hotfixes;
unsigned i;
n_hotfixes = le32_to_cpu(spareblock->n_spares);
n_used_hotfixes = le32_to_cpu(spareblock->n_spares_used);
if (n_hotfixes > 256 || n_used_hotfixes > n_hotfixes) {
hpfs_error(s, "invalid number of hotfixes: %u, used: %u", n_hotfixes, n_used_hotfixes);
return;
}
if (!(directory = hpfs_map_4sectors(s, le32_to_cpu(spareblock->hotfix_map), &qbh, 0))) {
hpfs_error(s, "can't load hotfix map");
return;
}
for (i = 0; i < n_used_hotfixes; i++) {
hpfs_sb(s)->hotfix_from[i] = le32_to_cpu(directory[i]);
hpfs_sb(s)->hotfix_to[i] = le32_to_cpu(directory[n_hotfixes + i]);
}
hpfs_sb(s)->n_hotfixes = n_used_hotfixes;
hpfs_brelse4(&qbh);
}
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;
}
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);
}
static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = dentry->d_inode;
dnode_secno dno;
fnode_secno fno;
int n_items = 0;
int err;
int r;
hpfs_adjust_length(name, &len);
lock_kernel();
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -ENOTDIR;
if (!de->directory)
goto out1;
hpfs_count_dnodes(dir->i_sb, hpfs_i(inode)->i_dno, NULL, NULL, &n_items);
err = -ENOTEMPTY;
if (n_items)
goto out1;
fno = de->fnode;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2:
err = -ENOSPC;
break;
default:
drop_nlink(dir);
clear_nlink(inode);
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
unlock_kernel();
return err;
}
__le32 *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
struct quad_buffer_head *qbh, char *id)
{
secno sec;
__le32 *ret;
unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
if (hpfs_sb(s)->sb_chk) if (bmp_block >= n_bands) {
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;
}
ret = hpfs_map_4sectors(s, sec, qbh, 4);
if (ret) hpfs_prefetch_bitmap(s, bmp_block + 1);
return ret;
}
int hpfs_stop_cycles(struct super_block *s, int key, int *c1, int *c2,
char *msg)
{
if (*c2 && *c1 == key) {
hpfs_error(s, "cycle detected on key %08x in %s", key, msg);
return 1;
}
(*c2)++;
if (!((*c2 - 1) & *c2)) *c1 = key;
return 0;
}
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = d_inode(dentry);
dnode_secno dno;
int r;
int err;
hpfs_lock(dir->i_sb);
hpfs_adjust_length(name, &len);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -EISDIR;
if (de->directory)
goto out1;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2: /* no space for deleting */
err = -ENOSPC;
break;
default:
drop_nlink(inode);
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
if (!err)
hpfs_update_directory_times(dir);
hpfs_unlock(dir->i_sb);
return err;
}
void hpfs_write_inode_nolock(struct inode *i)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
struct buffer_head *bh;
struct fnode *fnode;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
brelse(bh);
return;
}
} else de = NULL;
if (S_ISREG(i->i_mode)) {
fnode->file_size = cpu_to_le32(i->i_size);
if (de) de->file_size = cpu_to_le32(i->i_size);
} else if (S_ISDIR(i->i_mode)) {
fnode->file_size = cpu_to_le32(0);
if (de) de->file_size = cpu_to_le32(0);
}
hpfs_write_inode_ea(i, fnode);
if (de) {
de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
de->read_only = !(i->i_mode & 0222);
de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
hpfs_mark_4buffers_dirty(&qbh);
hpfs_brelse4(&qbh);
}
if (S_ISDIR(i->i_mode)) {
if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
de->read_only = !(i->i_mode & 0222);
de->ea_size = cpu_to_le32(/* */0);
de->file_size = cpu_to_le32(0);
hpfs_mark_4buffers_dirty(&qbh);
hpfs_brelse4(&qbh);
} else
hpfs_error(i->i_sb,
"directory %08lx doesn't have '.' entry",
(unsigned long)i->i_ino);
}
mark_buffer_dirty(bh);
brelse(bh);
}
static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
int lc;
long old_pos;
unsigned char *tempname;
int c1, c2 = 0;
int ret = 0;
hpfs_lock(inode->i_sb);
if (hpfs_sb(inode->i_sb)->sb_chk) {
if (hpfs_chk_sectors(inode->i_sb, inode->i_ino, 1, "dir_fnode")) {
ret = -EFSERROR;
goto out;
}
if (hpfs_chk_sectors(inode->i_sb, hpfs_inode->i_dno, 4, "dir_dnode")) {
ret = -EFSERROR;
goto out;
}
}
if (hpfs_sb(inode->i_sb)->sb_chk >= 2) {
struct buffer_head *bh;
struct fnode *fno;
int e = 0;
if (!(fno = hpfs_map_fnode(inode->i_sb, inode->i_ino, &bh))) {
ret = -EIOERROR;
goto out;
}
if (!fno->dirflag) {
e = 1;
hpfs_error(inode->i_sb, "not a directory, fnode %08lx",
(unsigned long)inode->i_ino);
}
if (hpfs_inode->i_dno != le32_to_cpu(fno->u.external[0].disk_secno)) {
e = 1;
hpfs_error(inode->i_sb, "corrupted inode: i_dno == %08x, fnode -> dnode == %08x", hpfs_inode->i_dno, le32_to_cpu(fno->u.external[0].disk_secno));
}
brelse(bh);
if (e) {
ret = -EFSERROR;
goto out;
}
}
lc = hpfs_sb(inode->i_sb)->sb_lowercase;
if (filp->f_pos == 12) { /* diff -r requires this (note, that diff -r */
filp->f_pos = 13; /* also fails on msdos filesystem in 2.0) */
goto out;
}
if (filp->f_pos == 13) {
ret = -ENOENT;
goto out;
}
while (1) {
again:
/* This won't work when cycle is longer than number of dirents
accepted by filldir, but what can I do?
maybe killall -9 ls helps */
if (hpfs_sb(inode->i_sb)->sb_chk)
if (hpfs_stop_cycles(inode->i_sb, filp->f_pos, &c1, &c2, "hpfs_readdir")) {
ret = -EFSERROR;
goto out;
}
if (filp->f_pos == 12)
goto out;
if (filp->f_pos == 3 || filp->f_pos == 4 || filp->f_pos == 5) {
printk("HPFS: warning: pos==%d\n",(int)filp->f_pos);
goto out;
}
if (filp->f_pos == 0) {
if (filldir(dirent, ".", 1, filp->f_pos, inode->i_ino, DT_DIR) < 0)
goto out;
filp->f_pos = 11;
}
if (filp->f_pos == 11) {
if (filldir(dirent, "..", 2, filp->f_pos, hpfs_inode->i_parent_dir, DT_DIR) < 0)
goto out;
filp->f_pos = 1;
}
if (filp->f_pos == 1) {
filp->f_pos = ((loff_t) hpfs_de_as_down_as_possible(inode->i_sb, hpfs_inode->i_dno) << 4) + 1;
hpfs_add_pos(inode, &filp->f_pos);
filp->f_version = inode->i_version;
}
old_pos = filp->f_pos;
if (!(de = map_pos_dirent(inode, &filp->f_pos, &qbh))) {
ret = -EIOERROR;
goto out;
}
if (de->first || de->last) {
if (hpfs_sb(inode->i_sb)->sb_chk) {
if (de->first && !de->last && (de->namelen != 2
|| de ->name[0] != 1 || de->name[1] != 1))
hpfs_error(inode->i_sb, "hpfs_readdir: bad ^A^A entry; pos = %08lx", old_pos);
if (de->last && (de->namelen != 1 || de ->name[0] != 255))
hpfs_error(inode->i_sb, "hpfs_readdir: bad \\377 entry; pos = %08lx", old_pos);
}
hpfs_brelse4(&qbh);
goto again;
}
tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3);
if (filldir(dirent, tempname, de->namelen, old_pos, le32_to_cpu(de->fnode), DT_UNKNOWN) < 0) {
filp->f_pos = old_pos;
if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
goto out;
}
if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
}
out:
hpfs_unlock(inode->i_sb);
return ret;
}
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
ino_t ino;
int err;
struct inode *result = NULL;
struct hpfs_inode_info *hpfs_result;
hpfs_lock(dir->i_sb);
if ((err = hpfs_chk_name(name, &len))) {
if (err == -ENAMETOOLONG) {
hpfs_unlock(dir->i_sb);
return ERR_PTR(-ENAMETOOLONG);
}
goto end_add;
}
/*
* '.' and '..' will never be passed here.
*/
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, NULL, &qbh);
/*
* This is not really a bailout, just means file not found.
*/
if (!de) goto end;
/*
* Get inode number, what we're after.
*/
ino = le32_to_cpu(de->fnode);
/*
* Go find or make an inode.
*/
result = iget_locked(dir->i_sb, ino);
if (!result) {
hpfs_error(dir->i_sb, "hpfs_lookup: can't get inode");
goto bail1;
}
if (result->i_state & I_NEW) {
hpfs_init_inode(result);
if (de->directory)
hpfs_read_inode(result);
else if (le32_to_cpu(de->ea_size) && hpfs_sb(dir->i_sb)->sb_eas)
hpfs_read_inode(result);
else {
result->i_mode |= S_IFREG;
result->i_mode &= ~0111;
result->i_op = &hpfs_file_iops;
result->i_fop = &hpfs_file_ops;
result->i_nlink = 1;
}
unlock_new_inode(result);
}
hpfs_result = hpfs_i(result);
if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino;
if (de->has_acl || de->has_xtd_perm) if (!(dir->i_sb->s_flags & MS_RDONLY)) {
hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");
goto bail1;
}
/*
* Fill in the info from the directory if this is a newly created
* inode.
*/
if (!result->i_ctime.tv_sec) {
if (!(result->i_ctime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date))))
result->i_ctime.tv_sec = 1;
result->i_ctime.tv_nsec = 0;
result->i_mtime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->write_date));
result->i_mtime.tv_nsec = 0;
result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->read_date));
result->i_atime.tv_nsec = 0;
hpfs_result->i_ea_size = le32_to_cpu(de->ea_size);
if (!hpfs_result->i_ea_mode && de->read_only)
result->i_mode &= ~0222;
if (!de->directory) {
if (result->i_size == -1) {
result->i_size = le32_to_cpu(de->file_size);
result->i_data.a_ops = &hpfs_aops;
hpfs_i(result)->mmu_private = result->i_size;
/*
* i_blocks should count the fnode and any anodes.
* We count 1 for the fnode and don't bother about
* anodes -- the disk heads are on the directory band
* and we want them to stay there.
*/
result->i_blocks = 1 + ((result->i_size + 511) >> 9);
}
}
}
static int hpfs_fill_super(struct super_block *s, void *options, int silent)
{
struct buffer_head *bh0, *bh1, *bh2;
struct hpfs_boot_block *bootblock;
struct hpfs_super_block *superblock;
struct hpfs_spare_block *spareblock;
struct hpfs_sb_info *sbi;
struct inode *root;
uid_t uid;
gid_t gid;
umode_t umask;
int lowercase, eas, chk, errs, chkdsk, timeshift;
dnode_secno root_dno;
struct hpfs_dirent *de = NULL;
struct quad_buffer_head qbh;
int o;
save_mount_options(s, options);
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi) {
return -ENOMEM;
}
s->s_fs_info = sbi;
sbi->sb_bmp_dir = NULL;
sbi->sb_cp_table = NULL;
mutex_init(&sbi->hpfs_mutex);
hpfs_lock(s);
uid = current_uid();
gid = current_gid();
umask = current_umask();
lowercase = 0;
eas = 2;
chk = 1;
errs = 1;
chkdsk = 1;
timeshift = 0;
if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase,
&eas, &chk, &errs, &chkdsk, ×hift))) {
printk("HPFS: bad mount options.\n");
goto bail0;
}
if (o==2) {
hpfs_help();
goto bail0;
}
/*sbi->sb_mounting = 1;*/
sb_set_blocksize(s, 512);
sbi->sb_fs_size = -1;
if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
/* Check magics */
if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC
||*/ le32_to_cpu(superblock->magic) != SB_MAGIC
|| le32_to_cpu(spareblock->magic) != SP_MAGIC) {
if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
goto bail4;
}
/* Check version */
if (!(s->s_flags & MS_RDONLY) &&
superblock->funcversion != 2 && superblock->funcversion != 3) {
printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
(int)superblock->version, (int)superblock->funcversion);
printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - [email protected]\n");
goto bail4;
}
s->s_flags |= MS_NOATIME;
/* Fill superblock stuff */
s->s_magic = HPFS_SUPER_MAGIC;
s->s_op = &hpfs_sops;
s->s_d_op = &hpfs_dentry_operations;
sbi->sb_root = le32_to_cpu(superblock->root);
sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors);
sbi->sb_bitmaps = le32_to_cpu(superblock->bitmaps);
sbi->sb_dirband_start = le32_to_cpu(superblock->dir_band_start);
sbi->sb_dirband_size = le32_to_cpu(superblock->n_dir_band);
sbi->sb_dmap = le32_to_cpu(superblock->dir_band_bitmap);
sbi->sb_uid = uid;
sbi->sb_gid = gid;
sbi->sb_mode = 0777 & ~umask;
sbi->sb_n_free = -1;
sbi->sb_n_free_dnodes = -1;
sbi->sb_lowercase = lowercase;
sbi->sb_eas = eas;
sbi->sb_chk = chk;
sbi->sb_chkdsk = chkdsk;
sbi->sb_err = errs;
sbi->sb_timeshift = timeshift;
sbi->sb_was_error = 0;
sbi->sb_cp_table = NULL;
sbi->sb_c_bitmap = -1;
sbi->sb_max_fwd_alloc = 0xffffff;
if (sbi->sb_fs_size >= 0x80000000) {
hpfs_error(s, "invalid size in superblock: %08x",
(unsigned)sbi->sb_fs_size);
goto bail4;
}
/* Load bitmap directory */
if (!(sbi->sb_bmp_dir = hpfs_load_bitmap_directory(s, le32_to_cpu(superblock->bitmaps))))
goto bail4;
/* Check for general fs errors*/
if (spareblock->dirty && !spareblock->old_wrote) {
if (errs == 2) {
printk("HPFS: Improperly stopped, not mounted\n");
goto bail4;
}
hpfs_error(s, "improperly stopped");
}
if (!(s->s_flags & MS_RDONLY)) {
spareblock->dirty = 1;
spareblock->old_wrote = 0;
mark_buffer_dirty(bh2);
}
if (le32_to_cpu(spareblock->hotfixes_used) || le32_to_cpu(spareblock->n_spares_used)) {
if (errs >= 2) {
printk("HPFS: Hotfixes not supported here, try chkdsk\n");
mark_dirty(s, 0);
goto bail4;
}
hpfs_error(s, "hotfixes not supported here, try chkdsk");
if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
}
if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) {
if (errs >= 2) {
printk("HPFS: Spare dnodes used, try chkdsk\n");
mark_dirty(s, 0);
goto bail4;
}
hpfs_error(s, "warning: spare dnodes used, try chkdsk");
if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
}
if (chk) {
unsigned a;
if (le32_to_cpu(superblock->dir_band_end) - le32_to_cpu(superblock->dir_band_start) + 1 != le32_to_cpu(superblock->n_dir_band) ||
le32_to_cpu(superblock->dir_band_end) < le32_to_cpu(superblock->dir_band_start) || le32_to_cpu(superblock->n_dir_band) > 0x4000) {
hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->dir_band_end), le32_to_cpu(superblock->n_dir_band));
goto bail4;
}
a = sbi->sb_dirband_size;
sbi->sb_dirband_size = 0;
if (hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_start), le32_to_cpu(superblock->n_dir_band), "dir_band") ||
hpfs_chk_sectors(s, le32_to_cpu(superblock->dir_band_bitmap), 4, "dir_band_bitmap") ||
hpfs_chk_sectors(s, le32_to_cpu(superblock->bitmaps), 4, "bitmaps")) {
mark_dirty(s, 0);
goto bail4;
}
sbi->sb_dirband_size = a;
} else printk("HPFS: You really don't want any checks? You are crazy...\n");
/* Load code page table */
if (le32_to_cpu(spareblock->n_code_pages))
if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir))))
printk("HPFS: Warning: code page support is disabled\n");
brelse(bh2);
brelse(bh1);
brelse(bh0);
root = iget_locked(s, sbi->sb_root);
if (!root)
goto bail0;
hpfs_init_inode(root);
hpfs_read_inode(root);
unlock_new_inode(root);
s->s_root = d_alloc_root(root);
if (!s->s_root) {
iput(root);
goto bail0;
}
/*
* find the root directory's . pointer & finish filling in the inode
*/
root_dno = hpfs_fnode_dno(s, sbi->sb_root);
if (root_dno)
de = map_dirent(root, root_dno, "\001\001", 2, NULL, &qbh);
if (!de)
hpfs_error(s, "unable to find root dir");
else {
root->i_atime.tv_sec = local_to_gmt(s, le32_to_cpu(de->read_date));
root->i_atime.tv_nsec = 0;
root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date));
root->i_mtime.tv_nsec = 0;
root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date));
root->i_ctime.tv_nsec = 0;
hpfs_i(root)->i_ea_size = le16_to_cpu(de->ea_size);
hpfs_i(root)->i_parent_dir = root->i_ino;
if (root->i_size == -1)
root->i_size = 2048;
if (root->i_blocks == -1)
root->i_blocks = 5;
hpfs_brelse4(&qbh);
}
hpfs_unlock(s);
return 0;
bail4: brelse(bh2);
bail3: brelse(bh1);
bail2: brelse(bh0);
bail1:
bail0:
hpfs_unlock(s);
kfree(sbi->sb_bmp_dir);
kfree(sbi->sb_cp_table);
s->s_fs_info = NULL;
kfree(sbi);
return -EINVAL;
}
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry)
{
const char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
ino_t ino;
int err;
struct inode *result = NULL;
if ((err = hpfs_chk_name((char *)name, &len))) {
if (err == -ENAMETOOLONG) return ERR_PTR(-ENAMETOOLONG);
goto end_add;
}
hpfs_lock_inode(dir);
/*
* '.' and '..' will never be passed here.
*/
de = map_dirent(dir, dir->i_hpfs_dno, (char *) name, len, NULL, &qbh);
/*
* This is not really a bailout, just means file not found.
*/
if (!de) goto end;
/*
* Get inode number, what we're after.
*/
ino = de->fnode;
/*
* Go find or make an inode.
*/
hpfs_lock_iget(dir->i_sb, de->directory || (de->ea_size && dir->i_sb->s_hpfs_eas) ? 1 : 2);
if (!(result = iget(dir->i_sb, ino))) {
hpfs_unlock_iget(dir->i_sb);
hpfs_error(dir->i_sb, "hpfs_lookup: can't get inode");
goto bail1;
}
if (!de->directory) result->i_hpfs_parent_dir = dir->i_ino;
hpfs_unlock_iget(dir->i_sb);
hpfs_decide_conv(result, (char *)name, len);
if (de->has_acl || de->has_xtd_perm) if (!(dir->i_sb->s_flags & MS_RDONLY)) {
hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");
goto bail1;
}
/*
* Fill in the info from the directory if this is a newly created
* inode.
*/
if (!result->i_ctime) {
if (!(result->i_ctime = local_to_gmt(dir->i_sb, de->creation_date)))
result->i_ctime = 1;
result->i_mtime = local_to_gmt(dir->i_sb, de->write_date);
result->i_atime = local_to_gmt(dir->i_sb, de->read_date);
result->i_hpfs_ea_size = de->ea_size;
if (!result->i_hpfs_ea_mode && de->read_only)
result->i_mode &= ~0222;
if (!de->directory) {
if (result->i_size == -1) {
result->i_size = de->file_size;
result->i_data.a_ops = &hpfs_aops;
result->u.hpfs_i.mmu_private = result->i_size;
/*
* i_blocks should count the fnode and any anodes.
* We count 1 for the fnode and don't bother about
* anodes -- the disk heads are on the directory band
* and we want them to stay there.
*/
result->i_blocks = 1 + ((result->i_size + 511) >> 9);
}
}
}
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;
}
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = dentry->d_inode;
dnode_secno dno;
int r;
int rep = 0;
int err;
hpfs_lock(dir->i_sb);
hpfs_adjust_length(name, &len);
again:
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -EISDIR;
if (de->directory)
goto out1;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2: /* no space for deleting, try to truncate file */
err = -ENOSPC;
if (rep++)
break;
dentry_unhash(dentry);
if (!d_unhashed(dentry)) {
hpfs_unlock(dir->i_sb);
return -ENOSPC;
}
if (generic_permission(inode, MAY_WRITE) ||
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
d_rehash(dentry);
} else {
struct iattr newattrs;
/*printk("HPFS: truncating file before delete.\n");*/
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
put_write_access(inode);
if (!err)
goto again;
}
hpfs_unlock(dir->i_sb);
return -ENOSPC;
default:
drop_nlink(inode);
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
if (!err)
hpfs_update_directory_times(dir);
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
const char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = dentry->d_inode;
dnode_secno dno;
fnode_secno fno;
int r;
int rep = 0;
int err;
lock_kernel();
hpfs_adjust_length((char *)name, &len);
again:
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -EISDIR;
if (de->directory)
goto out1;
fno = de->fnode;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2: /* no space for deleting, try to truncate file */
err = -ENOSPC;
if (rep++)
break;
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
d_drop(dentry);
spin_lock(&dentry->d_lock);
if (atomic_read(&dentry->d_count) > 1 ||
permission(inode, MAY_WRITE, NULL) ||
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
spin_unlock(&dentry->d_lock);
d_rehash(dentry);
} else {
struct iattr newattrs;
spin_unlock(&dentry->d_lock);
/*printk("HPFS: truncating file before delete.\n");*/
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
put_write_access(inode);
if (!err)
goto again;
}
unlock_kernel();
return -ENOSPC;
default:
inode->i_nlink--;
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
unlock_kernel();
return err;
}
static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
const unsigned char *old_name = old_dentry->d_name.name;
unsigned old_len = old_dentry->d_name.len;
const unsigned char *new_name = new_dentry->d_name.name;
unsigned new_len = new_dentry->d_name.len;
struct inode *i = old_dentry->d_inode;
struct inode *new_inode = new_dentry->d_inode;
struct quad_buffer_head qbh, qbh1;
struct hpfs_dirent *dep, *nde;
struct hpfs_dirent de;
dnode_secno dno;
int r;
struct buffer_head *bh;
struct fnode *fnode;
int err;
if ((err = hpfs_chk_name(new_name, &new_len))) return err;
err = 0;
hpfs_adjust_length(old_name, &old_len);
hpfs_lock(i->i_sb);
/* order doesn't matter, due to VFS exclusion */
/* Erm? Moving over the empty non-busy directory is perfectly legal */
if (new_inode && S_ISDIR(new_inode->i_mode)) {
err = -EINVAL;
goto end1;
}
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
err = -ENOENT;
goto end1;
}
copy_de(&de, dep);
de.hidden = new_name[0] == '.';
if (new_inode) {
int r;
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
clear_nlink(new_inode);
copy_de(nde, &de);
memcpy(nde->name, new_name, new_len);
hpfs_mark_4buffers_dirty(&qbh1);
hpfs_brelse4(&qbh1);
goto end;
}
hpfs_error(new_dir->i_sb, "hpfs_rename: could not find dirent");
err = -EFSERROR;
goto end1;
}
err = r == 2 ? -ENOSPC : r == 1 ? -EFSERROR : 0;
goto end1;
}
if (new_dir == old_dir) hpfs_brelse4(&qbh);
if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) {
if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!");
err = r == 1 ? -ENOSPC : -EFSERROR;
if (new_dir != old_dir) hpfs_brelse4(&qbh);
goto end1;
}
if (new_dir == old_dir)
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
err = -ENOENT;
goto end1;
}
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) {
hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent");
err = r == 2 ? -ENOSPC : -EFSERROR;
goto end1;
}
end:
hpfs_i(i)->i_parent_dir = new_dir->i_ino;
if (S_ISDIR(i->i_mode)) {
inc_nlink(new_dir);
drop_nlink(old_dir);
}
if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) {
fnode->up = cpu_to_le32(new_dir->i_ino);
fnode->len = new_len;
memcpy(fnode->name, new_name, new_len>15?15:new_len);
if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len);
mark_buffer_dirty(bh);
brelse(bh);
}
end1:
if (!err) {
hpfs_update_directory_times(old_dir);
hpfs_update_directory_times(new_dir);
}
hpfs_unlock(i->i_sb);
return err;
}
struct super_block *hpfs_read_super(struct super_block *s, void *options,
int silent)
{
kdev_t dev;
struct buffer_head *bh0, *bh1, *bh2;
struct hpfs_boot_block *bootblock;
struct hpfs_super_block *superblock;
struct hpfs_spare_block *spareblock;
uid_t uid;
gid_t gid;
umode_t umask;
int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
dnode_secno root_dno;
struct hpfs_dirent *de = NULL;
struct quad_buffer_head qbh;
int o;
s->s_hpfs_bmp_dir = NULL;
s->s_hpfs_cp_table = NULL;
s->s_hpfs_creation_de_lock = s->s_hpfs_rd_inode = 0;
init_waitqueue_head(&s->s_hpfs_creation_de);
init_waitqueue_head(&s->s_hpfs_iget_q);
uid = current->uid;
gid = current->gid;
umask = current->fs->umask;
lowercase = 0;
conv = CONV_BINARY;
eas = 2;
chk = 1;
errs = 1;
chkdsk = 1;
timeshift = 0;
if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &conv,
&eas, &chk, &errs, &chkdsk, ×hift))) {
printk("HPFS: bad mount options.\n");
goto bail0;
}
if (o==2) {
hpfs_help();
goto bail0;
}
/*s->s_hpfs_mounting = 1;*/
dev = s->s_dev;
set_blocksize(dev, 512);
s->s_hpfs_fs_size = -1;
if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
if (!(spareblock = hpfs_map_sector(s, 17, &bh2, 0))) goto bail3;
/* Check magics */
if (/*bootblock->magic != BB_MAGIC
||*/ superblock->magic != SB_MAGIC
|| spareblock->magic != SP_MAGIC) {
if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n");
goto bail4;
}
/* Check version */
if (!(s->s_flags & MS_RDONLY) &&
superblock->funcversion != 2 && superblock->funcversion != 3) {
printk("HPFS: Bad version %d,%d. Mount readonly to go around\n",
(int)superblock->version, (int)superblock->funcversion);
printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - [email protected]\n");
goto bail4;
}
s->s_flags |= MS_NOATIME;
/* Fill superblock stuff */
s->s_magic = HPFS_SUPER_MAGIC;
s->s_blocksize = 512;
s->s_blocksize_bits = 9;
s->s_op = &hpfs_sops;
s->s_hpfs_root = superblock->root;
s->s_hpfs_fs_size = superblock->n_sectors;
s->s_hpfs_bitmaps = superblock->bitmaps;
s->s_hpfs_dirband_start = superblock->dir_band_start;
s->s_hpfs_dirband_size = superblock->n_dir_band;
s->s_hpfs_dmap = superblock->dir_band_bitmap;
s->s_hpfs_uid = uid;
s->s_hpfs_gid = gid;
s->s_hpfs_mode = 0777 & ~umask;
s->s_hpfs_n_free = -1;
s->s_hpfs_n_free_dnodes = -1;
s->s_hpfs_lowercase = lowercase;
s->s_hpfs_conv = conv;
s->s_hpfs_eas = eas;
s->s_hpfs_chk = chk;
s->s_hpfs_chkdsk = chkdsk;
s->s_hpfs_err = errs;
s->s_hpfs_timeshift = timeshift;
s->s_hpfs_was_error = 0;
s->s_hpfs_cp_table = NULL;
s->s_hpfs_c_bitmap = -1;
/* Load bitmap directory */
if (!(s->s_hpfs_bmp_dir = hpfs_load_bitmap_directory(s, superblock->bitmaps)))
goto bail4;
/* Check for general fs errors*/
if (spareblock->dirty && !spareblock->old_wrote) {
if (errs == 2) {
printk("HPFS: Improperly stopped, not mounted\n");
goto bail4;
}
hpfs_error(s, "improperly stopped");
}
if (!(s->s_flags & MS_RDONLY)) {
spareblock->dirty = 1;
spareblock->old_wrote = 0;
mark_buffer_dirty(bh2);
}
if (spareblock->hotfixes_used || spareblock->n_spares_used) {
if (errs >= 2) {
printk("HPFS: Hotfixes not supported here, try chkdsk\n");
mark_dirty(s);
goto bail4;
}
hpfs_error(s, "hotfixes not supported here, try chkdsk");
if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n");
else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n");
}
if (spareblock->n_dnode_spares != spareblock->n_dnode_spares_free) {
if (errs >= 2) {
printk("HPFS: Spare dnodes used, try chkdsk\n");
mark_dirty(s);
goto bail4;
}
hpfs_error(s, "warning: spare dnodes used, try chkdsk");
if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n");
}
if (chk) {
unsigned a;
if (superblock->dir_band_end - superblock->dir_band_start + 1 != superblock->n_dir_band ||
superblock->dir_band_end < superblock->dir_band_start || superblock->n_dir_band > 0x4000) {
hpfs_error(s, "dir band size mismatch: dir_band_start==%08x, dir_band_end==%08x, n_dir_band==%08x",
superblock->dir_band_start, superblock->dir_band_end, superblock->n_dir_band);
goto bail4;
}
a = s->s_hpfs_dirband_size;
s->s_hpfs_dirband_size = 0;
if (hpfs_chk_sectors(s, superblock->dir_band_start, superblock->n_dir_band, "dir_band") ||
hpfs_chk_sectors(s, superblock->dir_band_bitmap, 4, "dir_band_bitmap") ||
hpfs_chk_sectors(s, superblock->bitmaps, 4, "bitmaps")) {
mark_dirty(s);
goto bail4;
}
s->s_hpfs_dirband_size = a;
} else printk("HPFS: You really don't want any checks? You are crazy...\n");
/* Load code page table */
if (spareblock->n_code_pages)
if (!(s->s_hpfs_cp_table = hpfs_load_code_page(s, spareblock->code_page_dir)))
printk("HPFS: Warning: code page support is disabled\n");
brelse(bh2);
brelse(bh1);
brelse(bh0);
hpfs_lock_iget(s, 1);
s->s_root = d_alloc_root(iget(s, s->s_hpfs_root));
hpfs_unlock_iget(s);
if (!s->s_root || !s->s_root->d_inode) {
printk("HPFS: iget failed. Why???\n");
goto bail0;
}
hpfs_set_dentry_operations(s->s_root);
/*
* find the root directory's . pointer & finish filling in the inode
*/
root_dno = hpfs_fnode_dno(s, s->s_hpfs_root);
if (root_dno)
de = map_dirent(s->s_root->d_inode, root_dno, "\001\001", 2, NULL, &qbh);
if (!root_dno || !de) hpfs_error(s, "unable to find root dir");
else {
s->s_root->d_inode->i_atime = local_to_gmt(s, de->read_date);
s->s_root->d_inode->i_mtime = local_to_gmt(s, de->write_date);
s->s_root->d_inode->i_ctime = local_to_gmt(s, de->creation_date);
s->s_root->d_inode->i_hpfs_ea_size = de->ea_size;
s->s_root->d_inode->i_hpfs_parent_dir = s->s_root->d_inode->i_ino;
if (s->s_root->d_inode->i_size == -1) s->s_root->d_inode->i_size = 2048;
if (s->s_root->d_inode->i_blocks == -1) s->s_root->d_inode->i_blocks = 5;
}
if (de) hpfs_brelse4(&qbh);
return s;
bail4: brelse(bh2);
bail3: brelse(bh1);
bail2: brelse(bh0);
bail1:
bail0:
if (s->s_hpfs_bmp_dir) kfree(s->s_hpfs_bmp_dir);
if (s->s_hpfs_cp_table) kfree(s->s_hpfs_cp_table);
return NULL;
}