lkml.org 
[lkml]   [2010]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] KEYS: The request_key() syscall should link an existing key to the dest keyring
Date
The request_key() system call and request_key_and_link() should make a link
from an existing key to the destination keyring (if supplied), not just from a
new key to the destination keyring.

This can be tested by:

ring=`keyctl newring fred @s`
keyctl request2 user debug:a a
keyctl request user debug:a $ring
keyctl list $ring

If it says:

keyring is empty

then it didn't work. If it shows something like:

1 key in keyring:
1070462727: --alswrv 0 0 user: debug:a

then it did.

Signed-off-by: David Howells <dhowells@redhat.com>
---
security/keys/request_key.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index ea97c31..d737cea 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -339,8 +339,10 @@ static int construct_alloc_key(struct key_type *type,

key_already_present:
mutex_unlock(&key_construction_mutex);
- if (dest_keyring)
+ if (dest_keyring) {
+ __key_link(dest_keyring, key_ref_to_ptr(key_ref));
up_write(&dest_keyring->sem);
+ }
mutex_unlock(&user->cons_lock);
key_put(key);
*_key = key = key_ref_to_ptr(key_ref);
@@ -431,6 +433,11 @@ struct key *request_key_and_link(struct key_type *type,

if (!IS_ERR(key_ref)) {
key = key_ref_to_ptr(key_ref);
+ if (dest_keyring) {
+ construct_get_dest_keyring(&dest_keyring);
+ key_link(dest_keyring, key);
+ key_put(dest_keyring);
+ }
} else if (PTR_ERR(key_ref) != -EAGAIN) {
key = ERR_CAST(key_ref);
} else {


\
 
 \ /
  Last update: 2010-04-26 17:05    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site