From 6b520e0565422966cdf1c3759bd73df77b0f248c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 12 Dec 2011 15:51:45 -0500 Subject: vfs: fix the stupidity with i_dentry in inode destructors Seeing that just about every destructor got that INIT_LIST_HEAD() copied into it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once(); the cost of taking it into inode_init_always() will be negligible for pipes and sockets and negative for everything else. Not to mention the removal of boilerplate code from ->destroy_inode() instances... Signed-off-by: Al Viro --- fs/ecryptfs/super.c | 1 - 1 file changed, 1 deletion(-) (limited to 'fs/ecryptfs/super.c') diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index dbd52d40df4..da485f0b4d1 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -69,7 +69,6 @@ static void ecryptfs_i_callback(struct rcu_head *head) struct ecryptfs_inode_info *inode_info; inode_info = ecryptfs_inode_to_private(inode); - INIT_LIST_HEAD(&inode->i_dentry); kmem_cache_free(ecryptfs_inode_info_cache, inode_info); } -- cgit v1.2.3-18-g5258 From 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 Dec 2011 21:32:45 -0500 Subject: vfs: switch ->show_options() to struct dentry * Signed-off-by: Al Viro --- fs/ecryptfs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ecryptfs/super.c') diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index da485f0b4d1..9df7fd6e0c3 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -131,9 +131,9 @@ static void ecryptfs_evict_inode(struct inode *inode) * Prints the mount options for a given superblock. * Returns zero; does not fail. */ -static int ecryptfs_show_options(struct seq_file *m, struct vfsmount *mnt) +static int ecryptfs_show_options(struct seq_file *m, struct dentry *root) { - struct super_block *sb = mnt->mnt_sb; + struct super_block *sb = root->d_sb; struct ecryptfs_mount_crypt_stat *mount_crypt_stat = &ecryptfs_superblock_to_private(sb)->mount_crypt_stat; struct ecryptfs_global_auth_tok *walker; -- cgit v1.2.3-18-g5258 From 4a26620df451ad46151ad21d711ed43e963c004e Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Sat, 5 Nov 2011 13:45:08 -0400 Subject: eCryptfs: Improve statfs reporting statfs() calls on eCryptfs files returned the wrong filesystem type and, when using filename encryption, the wrong maximum filename length. If mount-wide filename encryption is enabled, the cipher block size and the lower filesystem's max filename length will determine the max eCryptfs filename length. Pre-tested, known good lengths are used when the lower filesystem's namelen is 255 and a cipher with 8 or 16 byte block sizes is used. In other, less common cases, we fall back to a safe rounded-down estimate when determining the eCryptfs namelen. https://launchpad.net/bugs/885744 Signed-off-by: Tyler Hicks Reported-by: Kees Cook Reviewed-by: Kees Cook Reviewed-by: John Johansen --- fs/ecryptfs/super.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'fs/ecryptfs/super.c') diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index 9df7fd6e0c3..cf152823bbf 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -30,6 +30,8 @@ #include #include #include +#include +#include #include "ecryptfs_kernel.h" struct kmem_cache *ecryptfs_inode_info_cache; @@ -102,10 +104,20 @@ static void ecryptfs_destroy_inode(struct inode *inode) static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); + int rc; if (!lower_dentry->d_sb->s_op->statfs) return -ENOSYS; - return lower_dentry->d_sb->s_op->statfs(lower_dentry, buf); + + rc = lower_dentry->d_sb->s_op->statfs(lower_dentry, buf); + if (rc) + return rc; + + buf->f_type = ECRYPTFS_SUPER_MAGIC; + rc = ecryptfs_set_f_namelen(&buf->f_namelen, buf->f_namelen, + &ecryptfs_superblock_to_private(dentry->d_sb)->mount_crypt_stat); + + return rc; } /** -- cgit v1.2.3-18-g5258