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[PATCH] eCryptfs: Generalize metadata read/write

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Generalize the metadata reading and writing mechanisms, with two targets for
now: metadata in file header and metadata in the user.ecryptfs xattr of the
lower file.

[akpm@osdl.org: printk warning fix]
[bunk@stusta.de: make some needlessly global code static]
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Halcrow
2007-02-12 00:53:46 -08:00
committed by Linus Torvalds
parent 17398957aa
commit dd2a3b7ad9
7 changed files with 348 additions and 146 deletions
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18
fs/ecryptfs/messaging.c
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@@ -22,16 +22,18 @@
#include "ecryptfs_kernel.h"
LIST_HEAD(ecryptfs_msg_ctx_free_list);
LIST_HEAD(ecryptfs_msg_ctx_alloc_list);
struct mutex ecryptfs_msg_ctx_lists_mux;
static LIST_HEAD(ecryptfs_msg_ctx_free_list);
static LIST_HEAD(ecryptfs_msg_ctx_alloc_list);
static struct mutex ecryptfs_msg_ctx_lists_mux;
struct hlist_head *ecryptfs_daemon_id_hash;
struct mutex ecryptfs_daemon_id_hash_mux;
int ecryptfs_hash_buckets;
static struct hlist_head *ecryptfs_daemon_id_hash;
static struct mutex ecryptfs_daemon_id_hash_mux;
static int ecryptfs_hash_buckets;
#define ecryptfs_uid_hash(uid) \
hash_long((unsigned long)uid, ecryptfs_hash_buckets)
unsigned int ecryptfs_msg_counter;
struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
static unsigned int ecryptfs_msg_counter;
static struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
/**
* ecryptfs_acquire_free_msg_ctx