diff options
Diffstat (limited to 'fs/f2fs/hash.c')
| -rw-r--r-- | fs/f2fs/hash.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/fs/f2fs/hash.c b/fs/f2fs/hash.c index cc82f142f811..5bc4dcd8fc03 100644 --- a/fs/f2fs/hash.c +++ b/fs/f2fs/hash.c @@ -14,6 +14,7 @@ #include <linux/f2fs_fs.h> #include <linux/cryptohash.h> #include <linux/pagemap.h> +#include <linux/unicode.h> #include "f2fs.h" @@ -67,7 +68,7 @@ static void str2hashbuf(const unsigned char *msg, size_t len, *buf++ = pad; } -f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info, +static f2fs_hash_t __f2fs_dentry_hash(const struct qstr *name_info, struct fscrypt_name *fname) { __u32 hash; @@ -103,3 +104,37 @@ f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info, f2fs_hash = cpu_to_le32(hash & ~F2FS_HASH_COL_BIT); return f2fs_hash; } + +f2fs_hash_t f2fs_dentry_hash(const struct inode *dir, + const struct qstr *name_info, struct fscrypt_name *fname) +{ +#ifdef CONFIG_UNICODE + struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + const struct unicode_map *um = sbi->s_encoding; + int r, dlen; + unsigned char *buff; + struct qstr folded; + + if (!name_info->len || !IS_CASEFOLDED(dir)) + goto opaque_seq; + + buff = f2fs_kzalloc(sbi, sizeof(char) * PATH_MAX, GFP_KERNEL); + if (!buff) + return -ENOMEM; + + dlen = utf8_casefold(um, name_info, buff, PATH_MAX); + if (dlen < 0) { + kvfree(buff); + goto opaque_seq; + } + folded.name = buff; + folded.len = dlen; + r = __f2fs_dentry_hash(&folded, fname); + + kvfree(buff); + return r; + +opaque_seq: +#endif + return __f2fs_dentry_hash(name_info, fname); +} |