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Diffstat (limited to 'fs/f2fs/dir.c')
-rw-r--r--fs/f2fs/dir.c110
1 files changed, 65 insertions, 45 deletions
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 9054aeac8015..cbf85f65ba63 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -37,7 +37,7 @@ static unsigned int bucket_blocks(unsigned int level)
return 4;
}
-unsigned char f2fs_filetype_table[F2FS_FT_MAX] = {
+static unsigned char f2fs_filetype_table[F2FS_FT_MAX] = {
[F2FS_FT_UNKNOWN] = DT_UNKNOWN,
[F2FS_FT_REG_FILE] = DT_REG,
[F2FS_FT_DIR] = DT_DIR,
@@ -172,7 +172,10 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir,
int max_slots;
f2fs_hash_t namehash;
- namehash = f2fs_dentry_hash(&name);
+ if(fname->hash)
+ namehash = cpu_to_le32(fname->hash);
+ else
+ namehash = f2fs_dentry_hash(&name);
nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level);
nblock = bucket_blocks(level);
@@ -212,31 +215,17 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir,
return de;
}
-/*
- * Find an entry in the specified directory with the wanted name.
- * It returns the page where the entry was found (as a parameter - res_page),
- * and the entry itself. Page is returned mapped and unlocked.
- * Entry is guaranteed to be valid.
- */
-struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
- const struct qstr *child, struct page **res_page)
+struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
+ struct fscrypt_name *fname, struct page **res_page)
{
unsigned long npages = dir_blocks(dir);
struct f2fs_dir_entry *de = NULL;
unsigned int max_depth;
unsigned int level;
- struct fscrypt_name fname;
- int err;
-
- err = fscrypt_setup_filename(dir, child, 1, &fname);
- if (err) {
- *res_page = ERR_PTR(err);
- return NULL;
- }
if (f2fs_has_inline_dentry(dir)) {
*res_page = NULL;
- de = find_in_inline_dir(dir, &fname, res_page);
+ de = find_in_inline_dir(dir, fname, res_page);
goto out;
}
@@ -256,11 +245,35 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
for (level = 0; level < max_depth; level++) {
*res_page = NULL;
- de = find_in_level(dir, level, &fname, res_page);
+ de = find_in_level(dir, level, fname, res_page);
if (de || IS_ERR(*res_page))
break;
}
out:
+ return de;
+}
+
+/*
+ * Find an entry in the specified directory with the wanted name.
+ * It returns the page where the entry was found (as a parameter - res_page),
+ * and the entry itself. Page is returned mapped and unlocked.
+ * Entry is guaranteed to be valid.
+ */
+struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
+ const struct qstr *child, struct page **res_page)
+{
+ struct f2fs_dir_entry *de = NULL;
+ struct fscrypt_name fname;
+ int err;
+
+ err = fscrypt_setup_filename(dir, child, 1, &fname);
+ if (err) {
+ *res_page = ERR_PTR(err);
+ return NULL;
+ }
+
+ de = __f2fs_find_entry(dir, &fname, res_page);
+
fscrypt_free_filename(&fname);
return de;
}
@@ -375,7 +388,8 @@ static int make_empty_dir(struct inode *inode,
}
struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
- const struct qstr *name, struct page *dpage)
+ const struct qstr *new_name, const struct qstr *orig_name,
+ struct page *dpage)
{
struct page *page;
int err;
@@ -400,7 +414,7 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
if (err)
goto put_error;
- err = f2fs_init_security(inode, dir, name, page);
+ err = f2fs_init_security(inode, dir, orig_name, page);
if (err)
goto put_error;
@@ -417,8 +431,8 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
set_cold_node(inode, page);
}
- if (name)
- init_dent_inode(name, page);
+ if (new_name)
+ init_dent_inode(new_name, page);
/*
* This file should be checkpointed during fsync.
@@ -496,7 +510,7 @@ void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
de->ino = cpu_to_le32(ino);
set_de_type(de, mode);
for (i = 0; i < slots; i++) {
- test_and_set_bit_le(bit_pos + i, (void *)d->bitmap);
+ __set_bit_le(bit_pos + i, (void *)d->bitmap);
/* avoid wrong garbage data for readdir */
if (i)
(de + i)->name_len = 0;
@@ -504,6 +518,7 @@ void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
}
int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
+ const struct qstr *orig_name,
struct inode *inode, nid_t ino, umode_t mode)
{
unsigned int bit_pos;
@@ -530,7 +545,7 @@ int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
start:
#ifdef CONFIG_F2FS_FAULT_INJECTION
- if (time_to_inject(FAULT_DIR_DEPTH))
+ if (time_to_inject(F2FS_I_SB(dir), FAULT_DIR_DEPTH))
return -ENOSPC;
#endif
if (unlikely(current_depth == MAX_DIR_HASH_DEPTH))
@@ -569,7 +584,8 @@ add_dentry:
if (inode) {
down_write(&F2FS_I(inode)->i_sem);
- page = init_inode_metadata(inode, dir, new_name, NULL);
+ page = init_inode_metadata(inode, dir, new_name,
+ orig_name, NULL);
if (IS_ERR(page)) {
err = PTR_ERR(page);
goto fail;
@@ -599,6 +615,26 @@ fail:
return err;
}
+int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
+ struct inode *inode, nid_t ino, umode_t mode)
+{
+ struct qstr new_name;
+ int err = -EAGAIN;
+
+ new_name.name = fname_name(fname);
+ new_name.len = fname_len(fname);
+
+ if (f2fs_has_inline_dentry(dir))
+ err = f2fs_add_inline_entry(dir, &new_name, fname->usr_fname,
+ inode, ino, mode);
+ if (err == -EAGAIN)
+ err = f2fs_add_regular_entry(dir, &new_name, fname->usr_fname,
+ inode, ino, mode);
+
+ f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
+ return err;
+}
+
/*
* Caller should grab and release a rwsem by calling f2fs_lock_op() and
* f2fs_unlock_op().
@@ -607,24 +643,15 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name,
struct inode *inode, nid_t ino, umode_t mode)
{
struct fscrypt_name fname;
- struct qstr new_name;
int err;
err = fscrypt_setup_filename(dir, name, 0, &fname);
if (err)
return err;
- new_name.name = fname_name(&fname);
- new_name.len = fname_len(&fname);
-
- err = -EAGAIN;
- if (f2fs_has_inline_dentry(dir))
- err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode);
- if (err == -EAGAIN)
- err = f2fs_add_regular_entry(dir, &new_name, inode, ino, mode);
+ err = __f2fs_do_add_link(dir, &fname, inode, ino, mode);
fscrypt_free_filename(&fname);
- f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
return err;
}
@@ -634,7 +661,7 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
int err = 0;
down_write(&F2FS_I(inode)->i_sem);
- page = init_inode_metadata(inode, dir, NULL, NULL);
+ page = init_inode_metadata(inode, dir, NULL, NULL, NULL);
if (IS_ERR(page)) {
err = PTR_ERR(page);
goto fail;
@@ -788,16 +815,9 @@ bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
int save_len = fstr->len;
int ret;
- de_name.name = f2fs_kmalloc(de_name.len, GFP_NOFS);
- if (!de_name.name)
- return false;
-
- memcpy(de_name.name, d->filename[bit_pos], de_name.len);
-
ret = fscrypt_fname_disk_to_usr(d->inode,
(u32)de->hash_code, 0,
&de_name, fstr);
- kfree(de_name.name);
if (ret < 0)
return true;
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-26 18:01:33 +0000