The patch titled
eCryptfs: initialize crypt_stat in setattr
has been removed from the -mm tree. Its filename was
ecryptfs-initialize-crypt_stat-in-setattr.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: eCryptfs: initialize crypt_stat in setattr
From: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Recent changes in eCryptfs have made it possible to get to ecryptfs_setattr()
with an uninitialized crypt_stat struct. This results in a wide and colorful
variety of unpleasantries. This patch properly initializes the crypt_stat
structure in ecryptfs_setattr() when it is necessary to do so.
Signed-off-by: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ecryptfs/inode.c | 47 +++++++++++++++++++++++++++++++++++++++++-
1 files changed, 46 insertions(+), 1 deletion(-)
diff -puN fs/ecryptfs/inode.c~ecryptfs-initialize-crypt_stat-in-setattr fs/ecryptfs/inode.c
--- a/fs/ecryptfs/inode.c~ecryptfs-initialize-crypt_stat-in-setattr
+++ a/fs/ecryptfs/inode.c
@@ -894,9 +894,54 @@ static int ecryptfs_setattr(struct dentr
struct ecryptfs_crypt_stat *crypt_stat;
crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
- lower_dentry = ecryptfs_dentry_to_lower(dentry);
+ if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
+ ecryptfs_init_crypt_stat(crypt_stat);
inode = dentry->d_inode;
lower_inode = ecryptfs_inode_to_lower(inode);
+ lower_dentry = ecryptfs_dentry_to_lower(dentry);
+ mutex_lock(&crypt_stat->cs_mutex);
+ if (S_ISDIR(dentry->d_inode->i_mode))
+ crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
+ else if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)
+ || !(crypt_stat->flags & ECRYPTFS_KEY_VALID)) {
+ struct vfsmount *lower_mnt;
+ struct file *lower_file = NULL;
+ struct ecryptfs_mount_crypt_stat *mount_crypt_stat;
+ int lower_flags;
+
+ lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
+ lower_flags = O_RDONLY;
+ if ((rc = ecryptfs_open_lower_file(&lower_file, lower_dentry,
+ lower_mnt, lower_flags))) {
+ printk(KERN_ERR
+ "Error opening lower file; rc = [%d]\n", rc);
+ mutex_unlock(&crypt_stat->cs_mutex);
+ goto out;
+ }
+ mount_crypt_stat = &ecryptfs_superblock_to_private(
+ dentry->d_sb)->mount_crypt_stat;
+ if ((rc = ecryptfs_read_metadata(dentry, lower_file))) {
+ if (!(mount_crypt_stat->flags
+ & ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) {
+ rc = -EIO;
+ printk(KERN_WARNING "Attempt to read file that "
+ "is not in a valid eCryptfs format, "
+ "and plaintext passthrough mode is not "
+ "enabled; returning -EIO\n");
+
+ mutex_unlock(&crypt_stat->cs_mutex);
+ fput(lower_file);
+ goto out;
+ }
+ rc = 0;
+ crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
+ mutex_unlock(&crypt_stat->cs_mutex);
+ fput(lower_file);
+ goto out;
+ }
+ fput(lower_file);
+ }
+ mutex_unlock(&crypt_stat->cs_mutex);
if (ia->ia_valid & ATTR_SIZE) {
ecryptfs_printk(KERN_DEBUG,
"ia->ia_valid = [0x%x] ATTR_SIZE" " = [0x%x]\n",
_
Patches currently in -mm which might be from mhalcrow@xxxxxxxxxx are
origin.patch
git-unionfs.patch
fs-remove-some-aop_truncated_page.patch
couple-fixes-to-fs-ecryptfs-inodec.patch
ecryptfs-move-ecryptfs-docs-into-documentation-filesystems.patch
fs-introduce-vfs_path_lookup.patch
sunrpc-use-vfs_path_lookup.patch
nfsctl-use-vfs_path_lookup.patch
fs-mark-link_path_walk-static.patch
fs-remove-path_walk-export.patch
-
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