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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-06-25 21:08:31 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 01:43:54 -0400 |
| commit | bf6c7f6c7bd0ea779757d35b5fdc9f9157f056b3 (patch) | |
| tree | aed90f298856f286f84af6774ea30ade62c95294 | |
| parent | 8a5e929dd2e05ab4d3d89f58c5e8fca596af8f3a (diff) | |
| download | linux-3.10-bf6c7f6c7bd0ea779757d35b5fdc9f9157f056b3.tar.gz linux-3.10-bf6c7f6c7bd0ea779757d35b5fdc9f9157f056b3.tar.bz2 linux-3.10-bf6c7f6c7bd0ea779757d35b5fdc9f9157f056b3.zip | |
don't pass nameidata to vfs_create() from ecryptfs_create()
Instead of playing with removal of LOOKUP_OPEN, mangling (and
restoring) nd->path, just pass NULL to vfs_create(). The whole
point of what's being done there is to suppress any attempts
to open file by underlying fs, which is what nd == NULL indicates.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/ecryptfs/inode.c | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 799e01055f2..340c657a108 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -147,7 +147,6 @@ static int ecryptfs_interpose(struct dentry *lower_dentry, * @lower_dir_inode: inode of the parent in the lower fs of the new file * @dentry: New file's dentry * @mode: The mode of the new file - * @nd: nameidata of ecryptfs' parent's dentry & vfsmount * * Creates the file in the lower file system. * @@ -155,31 +154,10 @@ static int ecryptfs_interpose(struct dentry *lower_dentry, */ static int ecryptfs_create_underlying_file(struct inode *lower_dir_inode, - struct dentry *dentry, int mode, - struct nameidata *nd) + struct dentry *dentry, int mode) { struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); - struct vfsmount *lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry); - struct dentry *dentry_save; - struct vfsmount *vfsmount_save; - unsigned int flags_save; - int rc; - - if (nd) { - dentry_save = nd->path.dentry; - vfsmount_save = nd->path.mnt; - flags_save = nd->flags; - nd->path.dentry = lower_dentry; - nd->path.mnt = lower_mnt; - nd->flags &= ~LOOKUP_OPEN; - } - rc = vfs_create(lower_dir_inode, lower_dentry, mode, nd); - if (nd) { - nd->path.dentry = dentry_save; - nd->path.mnt = vfsmount_save; - nd->flags = flags_save; - } - return rc; + return vfs_create(lower_dir_inode, lower_dentry, mode, NULL); } /** @@ -197,8 +175,7 @@ ecryptfs_create_underlying_file(struct inode *lower_dir_inode, */ static int ecryptfs_do_create(struct inode *directory_inode, - struct dentry *ecryptfs_dentry, int mode, - struct nameidata *nd) + struct dentry *ecryptfs_dentry, int mode) { int rc; struct dentry *lower_dentry; @@ -213,7 +190,7 @@ ecryptfs_do_create(struct inode *directory_inode, goto out; } rc = ecryptfs_create_underlying_file(lower_dir_dentry->d_inode, - ecryptfs_dentry, mode, nd); + ecryptfs_dentry, mode); if (rc) { printk(KERN_ERR "%s: Failure to create dentry in lower fs; " "rc = [%d]\n", __func__, rc); @@ -294,7 +271,7 @@ ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry, int rc; /* ecryptfs_do_create() calls ecryptfs_interpose() */ - rc = ecryptfs_do_create(directory_inode, ecryptfs_dentry, mode, nd); + rc = ecryptfs_do_create(directory_inode, ecryptfs_dentry, mode); if (unlikely(rc)) { ecryptfs_printk(KERN_WARNING, "Failed to create file in" "lower filesystem\n"); |