void hpfs_read_inode(struct inode *i)
{
struct buffer_head *bh;
struct fnode *fnode;
struct super_block *sb = i->i_sb;
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
void *ea;
int ea_size;
if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
/*i->i_mode |= S_IFREG;
i->i_mode &= ~0111;
i->i_op = &hpfs_file_iops;
i->i_fop = &hpfs_file_ops;
<<<<<<< HEAD
clear_nlink(i);*/
=======
<<<<<<< HEAD
clear_nlink(i);*/
=======
i->i_nlink = 0;*/
>>>>>>> 58a75b6a81be54a8b491263ca1af243e9d8617b9
>>>>>>> ae1773bb70f3d7cf73324ce8fba787e01d8fa9f2
make_bad_inode(i);
return;
}
static int hpfs_symlink_readpage(struct file *file, struct page *page)
{
char *link = kmap(page);
struct inode *i = page->mapping->host;
struct fnode *fnode;
struct buffer_head *bh;
int err;
err = -EIO;
hpfs_lock(i->i_sb);
if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh)))
goto fail;
err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE);
brelse(bh);
if (err)
goto fail;
hpfs_unlock(i->i_sb);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
fail:
hpfs_unlock(i->i_sb);
SetPageError(page);
kunmap(page);
unlock_page(page);
return err;
}
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;
}
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 secno hpfs_bmap(struct inode *inode, unsigned file_secno)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
unsigned n, disk_secno;
struct fnode *fnode;
struct buffer_head *bh;
if (BLOCKS(hpfs_i(inode)->mmu_private) <= file_secno) return 0;
n = file_secno - hpfs_inode->i_file_sec;
if (n < hpfs_inode->i_n_secs) return hpfs_inode->i_disk_sec + n;
if (!(fnode = hpfs_map_fnode(inode->i_sb, inode->i_ino, &bh))) return 0;
disk_secno = hpfs_bplus_lookup(inode->i_sb, inode, &fnode->btree, file_secno, bh);
if (disk_secno == -1) return 0;
if (hpfs_chk_sectors(inode->i_sb, disk_secno, 1, "bmap")) return 0;
return disk_secno;
}
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;
}
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;
}
void hpfs_read_inode(struct inode *i)
{
struct buffer_head *bh;
struct fnode *fnode;
struct super_block *sb = i->i_sb;
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
void *ea;
int ea_size;
if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
/*
*/
make_bad_inode(i);
return;
}
if (hpfs_sb(i->i_sb)->sb_eas) {
if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
if (ea_size == 2) {
i->i_uid = le16_to_cpu(*(__le16*)ea);
hpfs_inode->i_ea_uid = 1;
}
kfree(ea);
}
if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
if (ea_size == 2) {
i->i_gid = le16_to_cpu(*(__le16*)ea);
hpfs_inode->i_ea_gid = 1;
}
kfree(ea);
}
if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
kfree(ea);
i->i_mode = S_IFLNK | 0777;
i->i_op = &page_symlink_inode_operations;
i->i_data.a_ops = &hpfs_symlink_aops;
set_nlink(i, 1);
i->i_size = ea_size;
i->i_blocks = 1;
brelse(bh);
return;
}
if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
int rdev = 0;
umode_t mode = hpfs_sb(sb)->sb_mode;
if (ea_size == 2) {
mode = le16_to_cpu(*(__le16*)ea);
hpfs_inode->i_ea_mode = 1;
}
kfree(ea);
i->i_mode = mode;
if (S_ISBLK(mode) || S_ISCHR(mode)) {
if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
if (ea_size == 4)
rdev = le32_to_cpu(*(__le32*)ea);
kfree(ea);
}
}
if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
brelse(bh);
set_nlink(i, 1);
i->i_size = 0;
i->i_blocks = 1;
init_special_inode(i, mode,
new_decode_dev(rdev));
return;
}
}
}
if (fnode->dirflag) {
int n_dnodes, n_subdirs;
i->i_mode |= S_IFDIR;
i->i_op = &hpfs_dir_iops;
i->i_fop = &hpfs_dir_ops;
hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
if (hpfs_sb(sb)->sb_chk >= 2) {
struct buffer_head *bh0;
if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
}
n_dnodes = 0; n_subdirs = 0;
hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
i->i_blocks = 4 * n_dnodes;
i->i_size = 2048 * n_dnodes;
set_nlink(i, 2 + n_subdirs);
} else {
i->i_mode |= S_IFREG;
if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
i->i_op = &hpfs_file_iops;
i->i_fop = &hpfs_file_ops;
set_nlink(i, 1);
i->i_size = le32_to_cpu(fnode->file_size);
i->i_blocks = ((i->i_size + 511) >> 9) + 1;
i->i_data.a_ops = &hpfs_aops;
hpfs_i(i)->mmu_private = i->i_size;
}
brelse(bh);
}
