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Subject[PATCH 4/5] ecryptfs: fixed testing of file descriptor flags
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This patch replaces the check (lower_file->f_flags & O_RDONLY) with
((lower_file & O_ACCMODE) == O_RDONLY).

Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
---
fs/ecryptfs/file.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 5cfcc3c..26bd93d 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -200,8 +200,8 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
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)) {
+ if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_ACCMODE) == O_RDONLY
+ && (file->f_flags & O_ACCMODE) != O_RDONLY) {
rc = -EPERM;
printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs "
"file must hence be opened RO\n", __func__);
--
1.7.2.3
[unhandled content-type:application/pkcs7-signature]
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