From 37ec43cdc4c776bd39aae469fdfa494bdf0344c7 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Sun, 14 Apr 2013 09:21:47 -0400 Subject: evm: calculate HMAC after initializing posix acl on tmpfs Included in the EVM hmac calculation is the i_mode. Any changes to the i_mode need to be reflected in the hmac. shmem_mknod() currently calls generic_acl_init(), which modifies the i_mode, after calling security_inode_init_security(). This patch reverses the order in which they are called. Reported-by: Sven Vermeulen Signed-off-by: Mimi Zohar Acked-by: Hugh Dickins --- mm/shmem.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'mm') diff --git a/mm/shmem.c b/mm/shmem.c index 5e6a8422658..a8e10722f8d 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1939,6 +1939,13 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) inode = shmem_get_inode(dir->i_sb, dir, mode, dev, VM_NORESERVE); if (inode) { +#ifdef CONFIG_TMPFS_POSIX_ACL + error = generic_acl_init(inode, dir); + if (error) { + iput(inode); + return error; + } +#endif error = security_inode_init_security(inode, dir, &dentry->d_name, shmem_initxattrs, NULL); @@ -1948,15 +1955,8 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) return error; } } -#ifdef CONFIG_TMPFS_POSIX_ACL - error = generic_acl_init(inode, dir); - if (error) { - iput(inode); - return error; - } -#else + error = 0; -#endif dir->i_size += BOGO_DIRENT_SIZE; dir->i_ctime = dir->i_mtime = CURRENT_TIME; d_instantiate(dentry, inode); -- cgit v1.2.3-70-g09d2