From 9421d57051c534c7477f98d0576b876237fbbc4c Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Sun, 28 Aug 2016 18:57:55 +0800 Subject: f2fs: fix to do security initialization of encrypted inode with original filename When creating new inode, security_inode_init_security will be called for initializing security info related to the inode, and filename is passed to security module, it helps security module such as SElinux to know which rule or label could be applied for the inode with specified name. Previously, if new inode is created as an encrypted one, f2fs will transfer encrypted filename to security module which may fail the check of security policy belong to the inode. So in order to this issue, alter to transfer original unencrypted filename instead. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'fs/f2fs/dir.c') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index b3e6f7f..3522f6f 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -378,7 +378,8 @@ 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; @@ -403,7 +404,7 @@ 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; @@ -420,8 +421,8 @@ 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. @@ -507,6 +508,7 @@ 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; @@ -572,7 +574,8 @@ 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; @@ -622,9 +625,11 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name, err = -EAGAIN; if (f2fs_has_inline_dentry(dir)) - err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode); + 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, inode, ino, mode); + err = f2fs_add_regular_entry(dir, &new_name, fname.usr_fname, + inode, ino, mode); fscrypt_free_filename(&fname); f2fs_update_time(F2FS_I_SB(dir), REQ_TIME); @@ -637,7 +642,7 @@ 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; -- cgit v1.1