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| author | Roberto Sassu <roberto.sassu@polito.it> | 2010-11-03 11:11:28 +0100 |
|---|---|---|
| committer | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2011-01-17 11:24:42 -0600 |
| commit | 27992890b02d340198a3a22fc210d13684a41564 (patch) | |
| tree | 7ece682994e705791c2c96a02cb139c1f42b0239 /fs/ecryptfs | |
| parent | 070baa51286e5cf59dde6be52fa23647ffb5d32d (diff) | |
| download | linux-stable-27992890b02d340198a3a22fc210d13684a41564.tar.gz linux-stable-27992890b02d340198a3a22fc210d13684a41564.tar.bz2 linux-stable-27992890b02d340198a3a22fc210d13684a41564.zip | |
ecryptfs: test lower_file pointer when lower_file_mutex is locked
This patch prevents the lower_file pointer in the 'ecryptfs_inode_info'
structure to be checked when the mutex 'lower_file_mutex' is not locked.
Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Diffstat (limited to 'fs/ecryptfs')
| -rw-r--r-- | fs/ecryptfs/file.c | 16 | ||||
| -rw-r--r-- | fs/ecryptfs/inode.c | 32 |
2 files changed, 21 insertions, 27 deletions
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index 679817e82484..99259f850e58 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -191,15 +191,13 @@ 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) { - 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_free; - } + 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_free; } if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_RDONLY) && !(file->f_flags & O_RDONLY)) { diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 64ff02330752..bd33f87a1907 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -185,15 +185,13 @@ static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry) "context; rc = [%d]\n", rc); goto out; } - if (!ecryptfs_inode_to_private(ecryptfs_dentry->d_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; - } + 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; } rc = ecryptfs_write_metadata(ecryptfs_dentry); if (rc) { @@ -302,15 +300,13 @@ int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry, rc = -ENOMEM; goto out; } - if (!ecryptfs_inode_to_private(ecryptfs_dentry->d_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_free_kmem; - } + 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_free_kmem; } crypt_stat = &ecryptfs_inode_to_private( ecryptfs_dentry->d_inode)->crypt_stat; |