eCryptfs: Remove ecryptfs_unlink_sigs warnings

A feature was added to the eCryptfs umount helper to automatically
unlink the keys used for an eCryptfs mount from the kernel keyring upon
umount.  This patch keeps the unrecognized mount option warnings for
ecryptfs_unlink_sigs out of the logs.

Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>

diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 064c5820e4e50dc3ba53b320b518a9e3c4ba7caa..00b30a2d54662937da35f382c49057b8acf797fd 100644 (file)
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -269,6 +269,7 @@ struct ecryptfs_crypt_stat {
 #define ECRYPTFS_ENCRYPT_FILENAMES    0x00000800
 #define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00001000
 #define ECRYPTFS_ENCFN_USE_FEK        0x00002000
+#define ECRYPTFS_UNLINK_SIGS         0x00004000
        u32 flags;
        unsigned int file_version;
        size_t iv_bytes;

diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 7638b0a02c8d98003b4bead8d15ec9529dfabb9b..ccabd5faa04da4b6670d230725e6b16eebb85f6a 100644 (file)
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -208,7 +208,7 @@ enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
        ecryptfs_opt_passthrough, ecryptfs_opt_xattr_metadata,
        ecryptfs_opt_encrypted_view, ecryptfs_opt_fnek_sig,
        ecryptfs_opt_fn_cipher, ecryptfs_opt_fn_cipher_key_bytes,
-       ecryptfs_opt_err };
+       ecryptfs_opt_unlink_sigs, ecryptfs_opt_err };
 
 static const match_table_t tokens = {
        {ecryptfs_opt_sig, "sig=%s"},
@@ -222,6 +222,7 @@ static const match_table_t tokens = {
        {ecryptfs_opt_fnek_sig, "ecryptfs_fnek_sig=%s"},
        {ecryptfs_opt_fn_cipher, "ecryptfs_fn_cipher=%s"},
        {ecryptfs_opt_fn_cipher_key_bytes, "ecryptfs_fn_key_bytes=%u"},
+       {ecryptfs_opt_unlink_sigs, "ecryptfs_unlink_sigs"},
        {ecryptfs_opt_err, NULL}
 };
 
@@ -402,6 +403,9 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
                                fn_cipher_key_bytes;
                        fn_cipher_key_bytes_set = 1;
                        break;
+               case ecryptfs_opt_unlink_sigs:
+                       mount_crypt_stat->flags |= ECRYPTFS_UNLINK_SIGS;
+                       break;
                case ecryptfs_opt_err:
                default:
                        printk(KERN_WARNING

diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c
index b5003023f106cce02b63316b2c8e5bca64830cd7..fa4c7e7d15d997d095bf4cc6929d0b1db295e2cf 100644 (file)
--- a/fs/ecryptfs/super.c
+++ b/fs/ecryptfs/super.c
@@ -189,6 +189,8 @@ static int ecryptfs_show_options(struct seq_file *m, struct vfsmount *mnt)
                seq_printf(m, ",ecryptfs_xattr_metadata");
        if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED)
                seq_printf(m, ",ecryptfs_encrypted_view");
+       if (mount_crypt_stat->flags & ECRYPTFS_UNLINK_SIGS)
+               seq_printf(m, ",ecryptfs_unlink_sigs");
 
        return 0;
 }