1 files changed, 0 insertions, 267 deletions
diff --git a/ANDROID_3.4.5/security/keys/request_key_auth.c b/ANDROID_3.4.5/security/keys/request_key_auth.c
deleted file mode 100644
index 60d4e3f5..00000000
--- a/ANDROID_3.4.5/security/keys/request_key_auth.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/* Request key authorisation token key definition.
- *
- * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * See Documentation/security/keys-request-key.txt
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/err.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
-#include "internal.h"
-
-static int request_key_auth_instantiate(struct key *, const void *, size_t);
-static void request_key_auth_describe(const struct key *, struct seq_file *);
-static void request_key_auth_revoke(struct key *);
-static void request_key_auth_destroy(struct key *);
-static long request_key_auth_read(const struct key *, char __user *, size_t);
-
-/*
- * The request-key authorisation key type definition.
- */
-struct key_type key_type_request_key_auth = {
-	.name		= ".request_key_auth",
-	.def_datalen	= sizeof(struct request_key_auth),
-	.instantiate	= request_key_auth_instantiate,
-	.describe	= request_key_auth_describe,
-	.revoke		= request_key_auth_revoke,
-	.destroy	= request_key_auth_destroy,
-	.read		= request_key_auth_read,
-};
-
-/*
- * Instantiate a request-key authorisation key.
- */
-static int request_key_auth_instantiate(struct key *key,
-					const void *data,
-					size_t datalen)
-{
-	key->payload.data = (struct request_key_auth *) data;
-	return 0;
-}
-
-/*
- * Describe an authorisation token.
- */
-static void request_key_auth_describe(const struct key *key,
-				      struct seq_file *m)
-{
-	struct request_key_auth *rka = key->payload.data;
-
-	seq_puts(m, "key:");
-	seq_puts(m, key->description);
-	if (key_is_instantiated(key))
-		seq_printf(m, " pid:%d ci:%zu", rka->pid, rka->callout_len);
-}
-
-/*
- * Read the callout_info data (retrieves the callout information).
- * - the key's semaphore is read-locked
- */
-static long request_key_auth_read(const struct key *key,
-				  char __user *buffer, size_t buflen)
-{
-	struct request_key_auth *rka = key->payload.data;
-	size_t datalen;
-	long ret;
-
-	datalen = rka->callout_len;
-	ret = datalen;
-
-	/* we can return the data as is */
-	if (buffer && buflen > 0) {
-		if (buflen > datalen)
-			buflen = datalen;
-
-		if (copy_to_user(buffer, rka->callout_info, buflen) != 0)
-			ret = -EFAULT;
-	}
-
-	return ret;
-}
-
-/*
- * Handle revocation of an authorisation token key.
- *
- * Called with the key sem write-locked.
- */
-static void request_key_auth_revoke(struct key *key)
-{
-	struct request_key_auth *rka = key->payload.data;
-
-	kenter("{%d}", key->serial);
-
-	if (rka->cred) {
-		put_cred(rka->cred);
-		rka->cred = NULL;
-	}
-}
-
-/*
- * Destroy an instantiation authorisation token key.
- */
-static void request_key_auth_destroy(struct key *key)
-{
-	struct request_key_auth *rka = key->payload.data;
-
-	kenter("{%d}", key->serial);
-
-	if (rka->cred) {
-		put_cred(rka->cred);
-		rka->cred = NULL;
-	}
-
-	key_put(rka->target_key);
-	key_put(rka->dest_keyring);
-	kfree(rka->callout_info);
-	kfree(rka);
-}
-
-/*
- * Create an authorisation token for /sbin/request-key or whoever to gain
- * access to the caller's security data.
- */
-struct key *request_key_auth_new(struct key *target, const void *callout_info,
-				 size_t callout_len, struct key *dest_keyring)
-{
-	struct request_key_auth *rka, *irka;
-	const struct cred *cred = current->cred;
-	struct key *authkey = NULL;
-	char desc[20];
-	int ret;
-
-	kenter("%d,", target->serial);
-
-	/* allocate a auth record */
-	rka = kmalloc(sizeof(*rka), GFP_KERNEL);
-	if (!rka) {
-		kleave(" = -ENOMEM");
-		return ERR_PTR(-ENOMEM);
-	}
-	rka->callout_info = kmalloc(callout_len, GFP_KERNEL);
-	if (!rka->callout_info) {
-		kleave(" = -ENOMEM");
-		kfree(rka);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	/* see if the calling process is already servicing the key request of
-	 * another process */
-	if (cred->request_key_auth) {
-		/* it is - use that instantiation context here too */
-		down_read(&cred->request_key_auth->sem);
-
-		/* if the auth key has been revoked, then the key we're
-		 * servicing is already instantiated */
-		if (test_bit(KEY_FLAG_REVOKED, &cred->request_key_auth->flags))
-			goto auth_key_revoked;
-
-		irka = cred->request_key_auth->payload.data;
-		rka->cred = get_cred(irka->cred);
-		rka->pid = irka->pid;
-
-		up_read(&cred->request_key_auth->sem);
-	}
-	else {
-		/* it isn't - use this process as the context */
-		rka->cred = get_cred(cred);
-		rka->pid = current->pid;
-	}
-
-	rka->target_key = key_get(target);
-	rka->dest_keyring = key_get(dest_keyring);
-	memcpy(rka->callout_info, callout_info, callout_len);
-	rka->callout_len = callout_len;
-
-	/* allocate the auth key */
-	sprintf(desc, "%x", target->serial);
-
-	authkey = key_alloc(&key_type_request_key_auth, desc,
-			    cred->fsuid, cred->fsgid, cred,
-			    KEY_POS_VIEW | KEY_POS_READ | KEY_POS_SEARCH |
-			    KEY_USR_VIEW, KEY_ALLOC_NOT_IN_QUOTA);
-	if (IS_ERR(authkey)) {
-		ret = PTR_ERR(authkey);
-		goto error_alloc;
-	}
-
-	/* construct the auth key */
-	ret = key_instantiate_and_link(authkey, rka, 0, NULL, NULL);
-	if (ret < 0)
-		goto error_inst;
-
-	kleave(" = {%d,%d}", authkey->serial, atomic_read(&authkey->usage));
-	return authkey;
-
-auth_key_revoked:
-	up_read(&cred->request_key_auth->sem);
-	kfree(rka->callout_info);
-	kfree(rka);
-	kleave("= -EKEYREVOKED");
-	return ERR_PTR(-EKEYREVOKED);
-
-error_inst:
-	key_revoke(authkey);
-	key_put(authkey);
-error_alloc:
-	key_put(rka->target_key);
-	key_put(rka->dest_keyring);
-	kfree(rka->callout_info);
-	kfree(rka);
-	kleave("= %d", ret);
-	return ERR_PTR(ret);
-}
-
-/*
- * See if an authorisation key is associated with a particular key.
- */
-static int key_get_instantiation_authkey_match(const struct key *key,
-					       const void *_id)
-{
-	struct request_key_auth *rka = key->payload.data;
-	key_serial_t id = (key_serial_t)(unsigned long) _id;
-
-	return rka->target_key->serial == id;
-}
-
-/*
- * Search the current process's keyrings for the authorisation key for
- * instantiation of a key.
- */
-struct key *key_get_instantiation_authkey(key_serial_t target_id)
-{
-	const struct cred *cred = current_cred();
-	struct key *authkey;
-	key_ref_t authkey_ref;
-
-	authkey_ref = search_process_keyrings(
-		&key_type_request_key_auth,
-		(void *) (unsigned long) target_id,
-		key_get_instantiation_authkey_match,
-		cred);
-
-	if (IS_ERR(authkey_ref)) {
-		authkey = ERR_CAST(authkey_ref);
-		if (authkey == ERR_PTR(-EAGAIN))
-			authkey = ERR_PTR(-ENOKEY);
-		goto error;
-	}
-
-	authkey = key_ref_to_ptr(authkey_ref);
-	if (test_bit(KEY_FLAG_REVOKED, &authkey->flags)) {
-		key_put(authkey);
-		authkey = ERR_PTR(-EKEYREVOKED);
-	}
-
-error:
-	return authkey;
-}