提交 1f8f5cf6 编写于 作者: D David Howells 提交者: Linus Torvalds

KEYS: Make request key instantiate the per-user keyrings

Make request_key() instantiate the per-user keyrings so that it doesn't oops
if it needs to get hold of the user session keyring because there isn't a
session keyring in place.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Tested-by: NSteve French <smfrench@gmail.com>
Tested-by: NRutger Nijlunsing <rutger.nijlunsing@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 3ad4f597
......@@ -107,6 +107,7 @@ extern key_ref_t search_process_keyrings(struct key_type *type,
extern struct key *find_keyring_by_name(const char *name, bool skip_perm_check);
extern int install_user_keyrings(struct task_struct *tsk);
extern int install_thread_keyring(struct task_struct *tsk);
extern int install_process_keyring(struct task_struct *tsk);
......
......@@ -40,7 +40,7 @@ struct key_user root_key_user = {
/*
* install user and user session keyrings for a particular UID
*/
static int install_user_keyrings(struct task_struct *tsk)
int install_user_keyrings(struct task_struct *tsk)
{
struct user_struct *user = tsk->user;
struct key *uid_keyring, *session_keyring;
......
......@@ -74,6 +74,10 @@ static int call_sbin_request_key(struct key_construction *cons,
kenter("{%d},{%d},%s", key->serial, authkey->serial, op);
ret = install_user_keyrings(tsk);
if (ret < 0)
goto error_alloc;
/* allocate a new session keyring */
sprintf(desc, "_req.%u", key->serial);
......
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