LSM/SELinux: Interfaces to allow FS to control mount options

[sfrench/cifs-2.6.git] / security / keys / request_key_auth.c

diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index cbf58a91b00a4c945ec72ca7db2867c19548dd6c..e42b5252486fe07eb623f413ec61cc7073758da8 100644 (file)
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -127,6 +127,7 @@ static void request_key_auth_destroy(struct key *key)
        }
 
        key_put(rka->target_key);
+       kfree(rka->callout_info);
        kfree(rka);
 
 } /* end request_key_auth_destroy() */
@@ -151,6 +152,12 @@ struct key *request_key_auth_new(struct key *target, const char *callout_info)
                kleave(" = -ENOMEM");
                return ERR_PTR(-ENOMEM);
        }
+       rka->callout_info = kmalloc(strlen(callout_info) + 1, 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 */
@@ -179,7 +186,7 @@ struct key *request_key_auth_new(struct key *target, const char *callout_info)
        }
 
        rka->target_key = key_get(target);
-       rka->callout_info = callout_info;
+       strcpy(rka->callout_info, callout_info);
 
        /* allocate the auth key */
        sprintf(desc, "%x", target->serial);
@@ -203,6 +210,7 @@ struct key *request_key_auth_new(struct key *target, const char *callout_info)
 
 auth_key_revoked:
        up_read(&current->request_key_auth->sem);
+       kfree(rka->callout_info);
        kfree(rka);
        kleave("= -EKEYREVOKED");
        return ERR_PTR(-EKEYREVOKED);
@@ -212,6 +220,7 @@ error_inst:
        key_put(authkey);
 error_alloc:
        key_put(rka->target_key);
+       kfree(rka->callout_info);
        kfree(rka);
        kleave("= %d", ret);
        return ERR_PTR(ret);
@@ -252,7 +261,7 @@ struct key *key_get_instantiation_authkey(key_serial_t target_id)
                current);
 
        if (IS_ERR(authkey_ref)) {
-               authkey = ERR_PTR(PTR_ERR(authkey_ref));
+               authkey = ERR_CAST(authkey_ref);
                goto error;
        }