return bidx;
}
-static bool early_match_name(size_t namelen, f2fs_hash_t namehash,
- struct f2fs_dir_entry *de)
-{
- if (le16_to_cpu(de->name_len) != namelen)
- return false;
-
- if (de->hash_code != namehash)
- return false;
-
- return true;
-}
-
static struct f2fs_dir_entry *find_in_block(struct page *dentry_page,
- struct qstr *name, int *max_slots,
+ struct f2fs_filename *fname,
+ f2fs_hash_t namehash,
+ int *max_slots,
struct page **res_page)
{
struct f2fs_dentry_block *dentry_blk;
dentry_blk = (struct f2fs_dentry_block *)kmap(dentry_page);
- make_dentry_ptr(&d, (void *)dentry_blk, 1);
- de = find_target_dentry(name, max_slots, &d);
-
+ make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
+ de = find_target_dentry(fname, namehash, max_slots, &d);
if (de)
*res_page = dentry_page;
else
return de;
}
-struct f2fs_dir_entry *find_target_dentry(struct qstr *name, int *max_slots,
- struct f2fs_dentry_ptr *d)
+struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *fname,
+ f2fs_hash_t namehash, int *max_slots,
+ struct f2fs_dentry_ptr *d)
{
struct f2fs_dir_entry *de;
unsigned long bit_pos = 0;
- f2fs_hash_t namehash = f2fs_dentry_hash(name);
int max_len = 0;
+ struct f2fs_str de_name = FSTR_INIT(NULL, 0);
+ struct f2fs_str *name = &fname->disk_name;
if (max_slots)
*max_slots = 0;
}
de = &d->dentry[bit_pos];
- if (early_match_name(name->len, namehash, de) &&
- !memcmp(d->filename[bit_pos], name->name, name->len))
+
+ /* encrypted case */
+ de_name.name = d->filename[bit_pos];
+ de_name.len = le16_to_cpu(de->name_len);
+
+ /* show encrypted name */
+ if (fname->hash) {
+ if (de->hash_code == fname->hash)
+ goto found;
+ } else if (de_name.len == name->len &&
+ de->hash_code == namehash &&
+ !memcmp(de_name.name, name->name, name->len))
goto found;
if (max_slots && max_len > *max_slots)
}
static struct f2fs_dir_entry *find_in_level(struct inode *dir,
- unsigned int level, struct qstr *name,
- f2fs_hash_t namehash, struct page **res_page)
+ unsigned int level,
+ struct f2fs_filename *fname,
+ struct page **res_page)
{
- int s = GET_DENTRY_SLOTS(name->len);
+ struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
+ int s = GET_DENTRY_SLOTS(name.len);
unsigned int nbucket, nblock;
unsigned int bidx, end_block;
struct page *dentry_page;
struct f2fs_dir_entry *de = NULL;
bool room = false;
int max_slots;
+ f2fs_hash_t namehash;
+
+ namehash = f2fs_dentry_hash(&name);
f2fs_bug_on(F2FS_I_SB(dir), level > MAX_DIR_HASH_DEPTH);
for (; bidx < end_block; bidx++) {
/* no need to allocate new dentry pages to all the indices */
- dentry_page = find_data_page(dir, bidx, true);
+ dentry_page = find_data_page(dir, bidx);
if (IS_ERR(dentry_page)) {
room = true;
continue;
}
- de = find_in_block(dentry_page, name, &max_slots, res_page);
+ de = find_in_block(dentry_page, fname, namehash, &max_slots,
+ res_page);
if (de)
break;
{
unsigned long npages = dir_blocks(dir);
struct f2fs_dir_entry *de = NULL;
- f2fs_hash_t name_hash;
unsigned int max_depth;
unsigned int level;
+ struct f2fs_filename fname;
+ int err;
*res_page = NULL;
- if (f2fs_has_inline_dentry(dir))
- return find_in_inline_dir(dir, child, res_page);
+ err = f2fs_fname_setup_filename(dir, child, 1, &fname);
+ if (err)
+ return NULL;
+
+ if (f2fs_has_inline_dentry(dir)) {
+ de = find_in_inline_dir(dir, &fname, res_page);
+ goto out;
+ }
if (npages == 0)
- return NULL;
+ goto out;
- name_hash = f2fs_dentry_hash(child);
max_depth = F2FS_I(dir)->i_current_depth;
for (level = 0; level < max_depth; level++) {
- de = find_in_level(dir, level, child, name_hash, res_page);
+ de = find_in_level(dir, level, &fname, res_page);
if (de)
break;
}
- if (!de && F2FS_I(dir)->chash != name_hash) {
- F2FS_I(dir)->chash = name_hash;
- F2FS_I(dir)->clevel = level - 1;
- }
+out:
+ f2fs_fname_free_filename(&fname);
return de;
}
if (f2fs_has_inline_dentry(dir))
return f2fs_parent_inline_dir(dir, p);
- page = get_lock_data_page(dir, 0);
+ page = get_lock_data_page(dir, 0, false);
if (IS_ERR(page))
return NULL;
set_page_dirty(ipage);
}
-int update_dent_inode(struct inode *inode, const struct qstr *name)
+int update_dent_inode(struct inode *inode, struct inode *to,
+ const struct qstr *name)
{
struct page *page;
+ if (file_enc_name(to))
+ return 0;
+
page = get_node_page(F2FS_I_SB(inode), inode->i_ino);
if (IS_ERR(page))
return PTR_ERR(page);
dentry_blk = kmap_atomic(dentry_page);
- make_dentry_ptr(&d, (void *)dentry_blk, 1);
+ make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
do_make_empty_dir(inode, parent, &d);
kunmap_atomic(dentry_blk);
err = f2fs_init_security(inode, dir, name, page);
if (err)
goto put_error;
+
+ if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) {
+ err = f2fs_inherit_context(dir, inode, page);
+ if (err)
+ goto put_error;
+ }
} else {
page = get_node_page(F2FS_I_SB(dir), inode->i_ino);
if (IS_ERR(page))
unsigned long bidx, block;
f2fs_hash_t dentry_hash;
unsigned int nbucket, nblock;
- size_t namelen = name->len;
struct page *dentry_page = NULL;
struct f2fs_dentry_block *dentry_blk = NULL;
struct f2fs_dentry_ptr d;
- int slots = GET_DENTRY_SLOTS(namelen);
struct page *page = NULL;
- int err = 0;
+ struct f2fs_filename fname;
+ struct qstr new_name;
+ int slots, err;
+
+ err = f2fs_fname_setup_filename(dir, name, 0, &fname);
+ if (err)
+ return err;
+
+ new_name.name = fname_name(&fname);
+ new_name.len = fname_len(&fname);
if (f2fs_has_inline_dentry(dir)) {
- err = f2fs_add_inline_entry(dir, name, inode, ino, mode);
+ err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode);
if (!err || err != -EAGAIN)
- return err;
+ goto out;
else
err = 0;
}
- dentry_hash = f2fs_dentry_hash(name);
level = 0;
+ slots = GET_DENTRY_SLOTS(new_name.len);
+ dentry_hash = f2fs_dentry_hash(&new_name);
+
current_depth = F2FS_I(dir)->i_current_depth;
if (F2FS_I(dir)->chash == dentry_hash) {
level = F2FS_I(dir)->clevel;
}
start:
- if (unlikely(current_depth == MAX_DIR_HASH_DEPTH))
- return -ENOSPC;
+ if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) {
+ err = -ENOSPC;
+ goto out;
+ }
/* Increase the depth, if required */
if (level == current_depth)
for (block = bidx; block <= (bidx + nblock - 1); block++) {
dentry_page = get_new_data_page(dir, NULL, block, true);
- if (IS_ERR(dentry_page))
- return PTR_ERR(dentry_page);
+ if (IS_ERR(dentry_page)) {
+ err = PTR_ERR(dentry_page);
+ goto out;
+ }
dentry_blk = kmap(dentry_page);
bit_pos = room_for_filename(&dentry_blk->dentry_bitmap,
if (inode) {
down_write(&F2FS_I(inode)->i_sem);
- page = init_inode_metadata(inode, dir, name, NULL);
+ page = init_inode_metadata(inode, dir, &new_name, NULL);
if (IS_ERR(page)) {
err = PTR_ERR(page);
goto fail;
}
+ if (f2fs_encrypted_inode(dir))
+ file_set_enc_name(inode);
}
- make_dentry_ptr(&d, (void *)dentry_blk, 1);
- f2fs_update_dentry(ino, mode, &d, name, dentry_hash, bit_pos);
+ make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
+ f2fs_update_dentry(ino, mode, &d, &new_name, dentry_hash, bit_pos);
set_page_dirty(dentry_page);
}
kunmap(dentry_page);
f2fs_put_page(dentry_page, 1);
+out:
+ f2fs_fname_free_filename(&fname);
return err;
}
if (inode)
f2fs_drop_nlink(dir, inode, NULL);
- if (bit_pos == NR_DENTRY_IN_BLOCK) {
- truncate_hole(dir, page->index, page->index + 1);
+ if (bit_pos == NR_DENTRY_IN_BLOCK &&
+ !truncate_hole(dir, page->index, page->index + 1)) {
clear_page_dirty_for_io(page);
ClearPagePrivate(page);
ClearPageUptodate(page);
return f2fs_empty_inline_dir(dir);
for (bidx = 0; bidx < nblock; bidx++) {
- dentry_page = get_lock_data_page(dir, bidx);
+ dentry_page = get_lock_data_page(dir, bidx, false);
if (IS_ERR(dentry_page)) {
if (PTR_ERR(dentry_page) == -ENOENT)
continue;
}
bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
- unsigned int start_pos)
+ unsigned int start_pos, struct f2fs_str *fstr)
{
unsigned char d_type = DT_UNKNOWN;
unsigned int bit_pos;
struct f2fs_dir_entry *de = NULL;
+ struct f2fs_str de_name = FSTR_INIT(NULL, 0);
bit_pos = ((unsigned long)ctx->pos % d->max);
d_type = f2fs_filetype_table[de->file_type];
else
d_type = DT_UNKNOWN;
- if (!dir_emit(ctx, d->filename[bit_pos],
- le16_to_cpu(de->name_len),
+
+ de_name.name = d->filename[bit_pos];
+ de_name.len = le16_to_cpu(de->name_len);
+
+ if (f2fs_encrypted_inode(d->inode)) {
+ int save_len = fstr->len;
+ int ret;
+
+ de_name.name = kmalloc(de_name.len, GFP_NOFS);
+ if (!de_name.name)
+ return false;
+
+ memcpy(de_name.name, d->filename[bit_pos], de_name.len);
+
+ ret = f2fs_fname_disk_to_usr(d->inode, &de->hash_code,
+ &de_name, fstr);
+ kfree(de_name.name);
+ if (ret < 0)
+ return true;
+
+ de_name = *fstr;
+ fstr->len = save_len;
+ }
+
+ if (!dir_emit(ctx, de_name.name, de_name.len,
le32_to_cpu(de->ino), d_type))
return true;
struct file_ra_state *ra = &file->f_ra;
unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
struct f2fs_dentry_ptr d;
+ struct f2fs_str fstr = FSTR_INIT(NULL, 0);
+ int err = 0;
- if (f2fs_has_inline_dentry(inode))
- return f2fs_read_inline_dir(file, ctx);
+ if (f2fs_encrypted_inode(inode)) {
+ err = f2fs_get_encryption_info(inode);
+ if (err)
+ return err;
+
+ err = f2fs_fname_crypto_alloc_buffer(inode, F2FS_NAME_LEN,
+ &fstr);
+ if (err < 0)
+ return err;
+ }
+
+ if (f2fs_has_inline_dentry(inode)) {
+ err = f2fs_read_inline_dir(file, ctx, &fstr);
+ goto out;
+ }
/* readahead for multi pages of dir */
if (npages - n > 1 && !ra_has_index(ra, n))
min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES));
for (; n < npages; n++) {
- dentry_page = get_lock_data_page(inode, n);
+ dentry_page = get_lock_data_page(inode, n, false);
if (IS_ERR(dentry_page))
continue;
dentry_blk = kmap(dentry_page);
- make_dentry_ptr(&d, (void *)dentry_blk, 1);
+ make_dentry_ptr(inode, &d, (void *)dentry_blk, 1);
- if (f2fs_fill_dentries(ctx, &d, n * NR_DENTRY_IN_BLOCK))
+ if (f2fs_fill_dentries(ctx, &d, n * NR_DENTRY_IN_BLOCK, &fstr))
goto stop;
ctx->pos = (n + 1) * NR_DENTRY_IN_BLOCK;
kunmap(dentry_page);
f2fs_put_page(dentry_page, 1);
}
-
- return 0;
+out:
+ f2fs_fname_crypto_free_buffer(&fstr);
+ return err;
}
const struct file_operations f2fs_dir_operations = {
.iterate = f2fs_readdir,
.fsync = f2fs_sync_file,
.unlocked_ioctl = f2fs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = f2fs_compat_ioctl,
+#endif
};
Code Review / kvmfornfv.git / blobdiff