static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
/*
*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
__le32 ea;
if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
ea = cpu_to_le32(i->i_uid);
hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
hpfs_inode->i_ea_uid = 1;
}
if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
ea = cpu_to_le32(i->i_gid);
hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
hpfs_inode->i_ea_gid = 1;
}
if (!S_ISLNK(i->i_mode))
if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
ea = cpu_to_le32(i->i_mode);
/* */
hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
hpfs_inode->i_ea_mode = 1;
}
if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
ea = cpu_to_le32(new_encode_dev(i->i_rdev));
hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
}
}
}
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_error(struct super_block *s, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vsnprintf(err_buf, sizeof(err_buf), fmt, args);
va_end(args);
printk("HPFS: filesystem error: %s", err_buf);
if (!hpfs_sb(s)->sb_was_error) {
if (hpfs_sb(s)->sb_err == 2) {
printk("; crashing the system because you wanted it\n");
mark_dirty(s, 0);
panic("HPFS panic");
} else if (hpfs_sb(s)->sb_err == 1) {
if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n");
else {
printk("; remounting read-only\n");
mark_dirty(s, 0);
s->s_flags |= MS_RDONLY;
}
} else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
} else printk("\n");
hpfs_sb(s)->sb_was_error = 1;
}
void hpfs_prefetch_sectors(struct super_block *s, unsigned secno, int n)
{
struct buffer_head *bh;
struct blk_plug plug;
if (n <= 0 || unlikely(secno >= hpfs_sb(s)->sb_fs_size))
return;
bh = sb_find_get_block(s, secno);
if (bh) {
if (buffer_uptodate(bh)) {
brelse(bh);
return;
}
brelse(bh);
};
blk_start_plug(&plug);
while (n > 0) {
if (unlikely(secno >= hpfs_sb(s)->sb_fs_size))
break;
sb_breadahead(s, secno);
secno++;
n--;
}
blk_finish_plug(&plug);
}
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);
}
void hpfs_init_inode(struct inode *i)
{
struct super_block *sb = i->i_sb;
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
i->i_uid = hpfs_sb(sb)->sb_uid;
i->i_gid = hpfs_sb(sb)->sb_gid;
i->i_mode = hpfs_sb(sb)->sb_mode;
i->i_size = -1;
i->i_blocks = -1;
hpfs_inode->i_dno = 0;
hpfs_inode->i_n_secs = 0;
hpfs_inode->i_file_sec = 0;
hpfs_inode->i_disk_sec = 0;
hpfs_inode->i_dpos = 0;
hpfs_inode->i_dsubdno = 0;
hpfs_inode->i_ea_mode = 0;
hpfs_inode->i_ea_uid = 0;
hpfs_inode->i_ea_gid = 0;
hpfs_inode->i_ea_size = 0;
hpfs_inode->i_rddir_off = NULL;
hpfs_inode->i_dirty = 0;
i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
}
static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
/*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
Some unknown structures like ACL may be in fnode,
we'd better not overwrite them
hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
__le32 ea;
if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
ea = cpu_to_le32(i_uid_read(i));
hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
hpfs_inode->i_ea_uid = 1;
}
if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
ea = cpu_to_le32(i_gid_read(i));
hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
hpfs_inode->i_ea_gid = 1;
}
if (!S_ISLNK(i->i_mode))
if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
ea = cpu_to_le32(i->i_mode);
/* sick, but legal */
hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
hpfs_inode->i_ea_mode = 1;
}
if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
ea = cpu_to_le32(new_encode_dev(i->i_rdev));
hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
}
}
}
static unsigned count_bitmaps(struct super_block *s)
{
unsigned n, count, n_bands;
n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
count = 0;
for (n = 0; n < n_bands; n++)
count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
return count;
}
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;
}
static void unmark_dirty(struct super_block *s)
{
struct buffer_head *bh;
struct hpfs_spare_block *sb;
if (s->s_flags & MS_RDONLY) return;
if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
mark_buffer_dirty(bh);
brelse(bh);
}
}
void hpfs_prefetch_bitmap(struct super_block *s, unsigned bmp_block)
{
unsigned to_prefetch, next_prefetch;
unsigned n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
if (unlikely(bmp_block >= n_bands))
return;
to_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block]);
if (unlikely(bmp_block + 1 >= n_bands))
next_prefetch = 0;
else
next_prefetch = le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[bmp_block + 1]);
hpfs_prefetch_sectors(s, to_prefetch, 4 + 4 * (to_prefetch + 4 == next_prefetch));
}
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);
}
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 void hpfs_put_super(struct super_block *s)
{
hpfs_lock(s);
unmark_dirty(s);
hpfs_unlock(s);
call_rcu(&hpfs_sb(s)->rcu, lazy_free_sbi);
}
void hpfs_unlock_creation(struct super_block *s)
{
#ifdef DEBUG_LOCKS
printk("unlock creation\n");
#endif
up(&hpfs_sb(s)->hpfs_creation_de);
}
void hpfs_write_inode(struct inode *i)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
struct inode *parent;
if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n");
kfree(hpfs_inode->i_rddir_off);
hpfs_inode->i_rddir_off = NULL;
}
if (!i->i_nlink) {
return;
}
parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
if (parent) {
hpfs_inode->i_dirty = 0;
if (parent->i_state & I_NEW) {
hpfs_init_inode(parent);
hpfs_read_inode(parent);
unlock_new_inode(parent);
}
hpfs_write_inode_nolock(i);
iput(parent);
}
}
int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error = -EINVAL;
lock_kernel();
if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
goto out_unlock;
if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
goto out_unlock;
error = inode_change_ok(inode, attr);
if (error)
goto out_unlock;
error = inode_setattr(inode, attr);
if (error)
goto out_unlock;
hpfs_write_inode(inode);
out_unlock:
unlock_kernel();
return error;
}
int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
unsigned char *n2, unsigned l2, int last)
{
unsigned l = l1 < l2 ? l1 : l2;
unsigned i;
if (last) return -1;
for (i = 0; i < l; i++) {
unsigned char c1 = upcase(hpfs_sb(s)->sb_cp_table,n1[i]);
unsigned char c2 = upcase(hpfs_sb(s)->sb_cp_table,n2[i]);
if (c1 < c2) return -1;
if (c1 > c2) return 1;
}
if (l1 < l2) return -1;
if (l1 > l2) return 1;
return 0;
}
int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error = -EINVAL;
hpfs_lock(inode->i_sb);
if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
goto out_unlock;
if ((attr->ia_valid & ATTR_UID) && attr->ia_uid >= 0x10000)
goto out_unlock;
if ((attr->ia_valid & ATTR_GID) && attr->ia_gid >= 0x10000)
goto out_unlock;
if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
goto out_unlock;
error = inode_change_ok(inode, attr);
if (error)
goto out_unlock;
if ((attr->ia_valid & ATTR_SIZE) &&
attr->ia_size != i_size_read(inode)) {
error = vmtruncate(inode, attr->ia_size);
if (error)
goto out_unlock;
}
setattr_copy(inode, attr);
hpfs_write_inode(inode);
out_unlock:
hpfs_unlock(inode->i_sb);
return error;
}
static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *s = dentry->d_sb;
struct hpfs_sb_info *sbi = hpfs_sb(s);
u64 id = huge_encode_dev(s->s_bdev->bd_dev);
hpfs_lock(s);
/*if (sbi->sb_n_free == -1) {*/
sbi->sb_n_free = count_bitmaps(s);
sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap);
/*}*/
buf->f_type = s->s_magic;
buf->f_bsize = 512;
buf->f_blocks = sbi->sb_fs_size;
buf->f_bfree = sbi->sb_n_free;
buf->f_bavail = sbi->sb_n_free;
buf->f_files = sbi->sb_dirband_size / 4;
buf->f_ffree = sbi->sb_n_free_dnodes;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 254;
hpfs_unlock(s);
return 0;
}
static unsigned count_bitmaps(struct super_block *s)
{
unsigned n, count, n_bands;
n_bands = (hpfs_sb(s)->sb_fs_size + 0x3fff) >> 14;
count = 0;
for (n = 0; n < COUNT_RD_AHEAD; n++) {
hpfs_prefetch_bitmap(s, n);
}
for (n = 0; n < n_bands; n++) {
unsigned c;
hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD);
c = hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n]));
if (c != (unsigned)-1)
count += c;
}
return count;
}
static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
{
uid_t uid;
gid_t gid;
umode_t umask;
int lowercase, eas, chk, errs, chkdsk, timeshift;
int o;
struct hpfs_sb_info *sbi = hpfs_sb(s);
char *new_opts = kstrdup(data, GFP_KERNEL);
sync_filesystem(s);
*flags |= MS_NOATIME;
hpfs_lock(s);
lock_super(s);
uid = sbi->sb_uid; gid = sbi->sb_gid;
umask = 0777 & ~sbi->sb_mode;
lowercase = sbi->sb_lowercase;
eas = sbi->sb_eas; chk = sbi->sb_chk; chkdsk = sbi->sb_chkdsk;
errs = sbi->sb_err; timeshift = sbi->sb_timeshift;
if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase,
&eas, &chk, &errs, &chkdsk, ×hift))) {
printk("HPFS: bad mount options.\n");
goto out_err;
}
if (o == 2) {
hpfs_help();
goto out_err;
}
if (timeshift != sbi->sb_timeshift) {
printk("HPFS: timeshift can't be changed using remount.\n");
goto out_err;
}
unmark_dirty(s);
sbi->sb_uid = uid; sbi->sb_gid = gid;
sbi->sb_mode = 0777 & ~umask;
sbi->sb_lowercase = lowercase;
sbi->sb_eas = eas; sbi->sb_chk = chk; sbi->sb_chkdsk = chkdsk;
sbi->sb_err = errs; sbi->sb_timeshift = timeshift;
if (!(*flags & MS_RDONLY)) mark_dirty(s, 1);
replace_mount_options(s, new_opts);
unlock_super(s);
hpfs_unlock(s);
return 0;
out_err:
unlock_super(s);
hpfs_unlock(s);
kfree(new_opts);
return -EINVAL;
}
static void hpfs_put_super(struct super_block *s)
{
struct hpfs_sb_info *sbi = hpfs_sb(s);
kfree(sbi->sb_cp_table);
kfree(sbi->sb_bmp_dir);
unmark_dirty(s);
s->s_fs_info = NULL;
kfree(sbi);
}
__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;
}
char *hpfs_translate_name(struct super_block *s, unsigned char *from,
unsigned len, int lc, int lng)
{
char *to;
int i;
if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
printk("HPFS: Long name flag mismatch - name ");
for (i=0; i<len; i++) printk("%c", from[i]);
printk(" misidentified as %s.\n", lng ? "short" : "long");
printk("HPFS: It's nothing serious. It could happen because of bug in OS/2.\nHPFS: Set checks=normal to disable this message.\n");
}
if (!lc) return from;
if (!(to = kmalloc(len, GFP_KERNEL))) {
printk("HPFS: can't allocate memory for name conversion buffer\n");
return from;
}
for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]);
return to;
}
secno hpfs_search_hotfix_map(struct super_block *s, secno sec)
{
unsigned i;
struct hpfs_sb_info *sbi = hpfs_sb(s);
for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
if (sbi->hotfix_from[i] == sec) {
return sbi->hotfix_to[i];
}
}
return sec;
}
unsigned hpfs_get_free_dnodes(struct super_block *s)
{
struct hpfs_sb_info *sbi = hpfs_sb(s);
if (sbi->sb_n_free_dnodes == (unsigned)-1) {
unsigned c = hpfs_count_one_bitmap(s, sbi->sb_dmap);
if (c == (unsigned)-1)
return 0;
sbi->sb_n_free_dnodes = c;
}
return sbi->sb_n_free_dnodes;
}
unsigned hpfs_search_hotfix_map_for_range(struct super_block *s, secno sec, unsigned n)
{
unsigned i;
struct hpfs_sb_info *sbi = hpfs_sb(s);
for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
if (sbi->hotfix_from[i] >= sec && sbi->hotfix_from[i] < sec + n) {
n = sbi->hotfix_from[i] - sec;
}
}
return n;
}
static void mark_dirty(struct super_block *s)
{
if (hpfs_sb(s)->sb_chkdsk && !(s->s_flags & MS_RDONLY)) {
struct buffer_head *bh;
struct hpfs_spare_block *sb;
if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
sb->dirty = 1;
sb->old_wrote = 0;
mark_buffer_dirty(bh);
brelse(bh);
}
}
}
int hpfs_notify_change(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error=0;
lock_kernel();
if ( ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) ||
(hpfs_sb(inode->i_sb)->sb_root == inode->i_ino) ) {
error = -EINVAL;
} else if ((error = inode_change_ok(inode, attr))) {
} else if ((error = inode_setattr(inode, attr))) {
} else {
hpfs_write_inode(inode);
}
unlock_kernel();
return error;
}