struct f2fs_filename *fname)
{
#ifdef CONFIG_UNICODE
- struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
+ struct super_block *sb = dir->i_sb;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
if (IS_CASEFOLDED(dir)) {
fname->cf_name.name = f2fs_kmalloc(sbi, F2FS_NAME_LEN,
GFP_NOFS);
if (!fname->cf_name.name)
return -ENOMEM;
- fname->cf_name.len = utf8_casefold(sbi->s_encoding,
+ fname->cf_name.len = utf8_casefold(sb->s_encoding,
fname->usr_fname,
fname->cf_name.name,
F2FS_NAME_LEN);
if ((int)fname->cf_name.len <= 0) {
kfree(fname->cf_name.name);
fname->cf_name.name = NULL;
- if (f2fs_has_strict_mode(sbi))
+ if (sb_has_strict_encoding(sb))
return -EINVAL;
/* fall back to treating name as opaque byte sequence */
}
static struct f2fs_dir_entry *find_in_block(struct inode *dir,
struct page *dentry_page,
const struct f2fs_filename *fname,
- int *max_slots,
- struct page **res_page)
+ int *max_slots)
{
struct f2fs_dentry_block *dentry_blk;
- struct f2fs_dir_entry *de;
struct f2fs_dentry_ptr d;
dentry_blk = (struct f2fs_dentry_block *)page_address(dentry_page);
make_dentry_ptr_block(dir, &d, dentry_blk);
- de = f2fs_find_target_dentry(&d, fname, max_slots);
- if (de)
- *res_page = dentry_page;
-
- return de;
+ return f2fs_find_target_dentry(&d, fname, max_slots);
}
#ifdef CONFIG_UNICODE
static bool f2fs_match_ci_name(const struct inode *dir, const struct qstr *name,
const u8 *de_name, u32 de_name_len)
{
- const struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
- const struct unicode_map *um = sbi->s_encoding;
+ const struct super_block *sb = dir->i_sb;
+ const struct unicode_map *um = sb->s_encoding;
struct qstr entry = QSTR_INIT(de_name, de_name_len);
int res;
* In strict mode, ignore invalid names. In non-strict mode,
* fall back to treating them as opaque byte sequences.
*/
- if (f2fs_has_strict_mode(sbi) || name->len != entry.len)
+ if (sb_has_strict_encoding(sb) || name->len != entry.len)
return false;
return !memcmp(name->name, entry.name, name->len);
}
}
}
- de = find_in_block(dir, dentry_page, fname, &max_slots,
- res_page);
- if (de)
+ de = find_in_block(dir, dentry_page, fname, &max_slots);
+ if (de) {
+ *res_page = dentry_page;
break;
+ }
if (max_slots >= s)
room = true;
unsigned int max_depth;
unsigned int level;
+ *res_page = NULL;
+
if (f2fs_has_inline_dentry(dir)) {
- *res_page = NULL;
de = f2fs_find_in_inline_dir(dir, fname, res_page);
goto out;
}
- if (npages == 0) {
- *res_page = NULL;
+ if (npages == 0)
goto out;
- }
max_depth = F2FS_I(dir)->i_current_depth;
if (unlikely(max_depth > MAX_DIR_HASH_DEPTH)) {
}
for (level = 0; level < max_depth; level++) {
- *res_page = NULL;
de = find_in_level(dir, level, fname, res_page);
if (de || IS_ERR(*res_page))
break;
};
#ifdef CONFIG_UNICODE
-static int f2fs_d_compare(const struct dentry *dentry, unsigned int len,
- const char *str, const struct qstr *name)
-{
- const struct dentry *parent = READ_ONCE(dentry->d_parent);
- const struct inode *dir = READ_ONCE(parent->d_inode);
- const struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
- struct qstr entry = QSTR_INIT(str, len);
- char strbuf[DNAME_INLINE_LEN];
- int res;
-
- if (!dir || !IS_CASEFOLDED(dir))
- goto fallback;
-
- /*
- * If the dentry name is stored in-line, then it may be concurrently
- * modified by a rename. If this happens, the VFS will eventually retry
- * the lookup, so it doesn't matter what ->d_compare() returns.
- * However, it's unsafe to call utf8_strncasecmp() with an unstable
- * string. Therefore, we have to copy the name into a temporary buffer.
- */
- if (len <= DNAME_INLINE_LEN - 1) {
- memcpy(strbuf, str, len);
- strbuf[len] = 0;
- entry.name = strbuf;
- /* prevent compiler from optimizing out the temporary buffer */
- barrier();
- }
-
- res = utf8_strncasecmp(sbi->s_encoding, name, &entry);
- if (res >= 0)
- return res;
-
- if (f2fs_has_strict_mode(sbi))
- return -EINVAL;
-fallback:
- if (len != name->len)
- return 1;
- return !!memcmp(str, name->name, len);
-}
-
-static int f2fs_d_hash(const struct dentry *dentry, struct qstr *str)
-{
- struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb);
- const struct unicode_map *um = sbi->s_encoding;
- const struct inode *inode = READ_ONCE(dentry->d_inode);
- unsigned char *norm;
- int len, ret = 0;
-
- if (!inode || !IS_CASEFOLDED(inode))
- return 0;
-
- norm = f2fs_kmalloc(sbi, PATH_MAX, GFP_ATOMIC);
- if (!norm)
- return -ENOMEM;
-
- len = utf8_casefold(um, str, norm, PATH_MAX);
- if (len < 0) {
- if (f2fs_has_strict_mode(sbi))
- ret = -EINVAL;
- goto out;
- }
- str->hash = full_name_hash(dentry, norm, len);
-out:
- kvfree(norm);
- return ret;
-}
-
const struct dentry_operations f2fs_dentry_ops = {
- .d_hash = f2fs_d_hash,
- .d_compare = f2fs_d_compare,
+ .d_hash = generic_ci_d_hash,
+ .d_compare = generic_ci_d_compare,
};
#endif
projects / linux-2.6-microblaze.git / blobdiff