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ecryptfs: added ecryptfs_mount_auth_tok_only mount parameter

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This patch adds a new mount parameter 'ecryptfs_mount_auth_tok_only' to
force ecryptfs to use only authentication tokens which signature has
been specified at mount time with parameters 'ecryptfs_sig' and
'ecryptfs_fnek_sig'. In this way, after disabling the passthrough and
the encrypted view modes, it's possible to make available to users only
files encrypted with the specified authentication token.

Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Cc: Dustin Kirkland <kirkland@canonical.com>
Cc: James Morris <jmorris@namei.org>
[Tyler: Clean up coding style errors found by checkpatch]
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
This commit is contained in:
Roberto Sassu 2010-10-06 18:31:32 +02:00 • committed by Tyler Hicks
parent 39fac853a7
commit f16feb5119
3 changed files with 17 additions and 1 deletions
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1
fs/ecryptfs/ecryptfs_kernel.h
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@ -377,6 +377,7 @@ struct ecryptfs_mount_crypt_stat {
#define ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES 0x00000010
#define ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK 0x00000020
#define ECRYPTFS_GLOBAL_ENCFN_USE_FEK 0x00000040
#define ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY 0x00000080
u32 flags;
struct list_head global_auth_tok_list;
struct mutex global_auth_tok_list_mutex;