diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 17:48:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 17:48:49 +0200 |
| commit | c3cc99ff5d24e2eeaf7ec2032e720681916990e3 (patch) | |
| tree | c3e74171bbbd2adde9d60b9db1c440415c8d2831 /fs/ecryptfs/file.c | |
| parent | 38ffbe66d59051fd9cfcfc8545f164700e2fa3bc (diff) | |
| parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) | |
Merge branch 'linus' into x86/xen
Diffstat (limited to 'fs/ecryptfs/file.c')
| -rw-r--r-- | fs/ecryptfs/file.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 24749bf0668f..9244d653743e 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -192,6 +192,23 @@ static int ecryptfs_open(struct inode *inode, struct file *file) | ECRYPTFS_ENCRYPTED); } mutex_unlock(&crypt_stat->cs_mutex); + if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_RDONLY) + && !(file->f_flags & O_RDONLY)) { + rc = -EPERM; + printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs " + "file must hence be opened RO\n", __func__); + goto out; + } + if (!ecryptfs_inode_to_private(inode)->lower_file) { + rc = ecryptfs_init_persistent_file(ecryptfs_dentry); + if (rc) { + printk(KERN_ERR "%s: Error attempting to initialize " + "the persistent file for the dentry with name " + "[%s]; rc = [%d]\n", __func__, + ecryptfs_dentry->d_name.name, rc); + goto out; + } + } ecryptfs_set_file_lower( file, ecryptfs_inode_to_private(inode)->lower_file); if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) { |