keys: allow the callout data to be passed as a blob rather than a string

[linux-2.6-omap-h63xx.git] / security / keys / request_key_auth.c

diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index e42b5252486fe07eb623f413ec61cc7073758da8..c615d473ce7ce2f6280845b3ea0f794e19cf944c 100644 (file)
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -61,7 +61,7 @@ static void request_key_auth_describe(const struct key *key,
 
        seq_puts(m, "key:");
        seq_puts(m, key->description);
-       seq_printf(m, " pid:%d ci:%zu", rka->pid, strlen(rka->callout_info));
+       seq_printf(m, " pid:%d ci:%zu", rka->pid, rka->callout_len);
 
 } /* end request_key_auth_describe() */
 
@@ -77,7 +77,7 @@ static long request_key_auth_read(const struct key *key,
        size_t datalen;
        long ret;
 
-       datalen = strlen(rka->callout_info);
+       datalen = rka->callout_len;
        ret = datalen;
 
        /* we can return the data as is */
@@ -137,7 +137,8 @@ static void request_key_auth_destroy(struct key *key)
  * 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 char *callout_info)
+struct key *request_key_auth_new(struct key *target, const void *callout_info,
+                                size_t callout_len)
 {
        struct request_key_auth *rka, *irka;
        struct key *authkey = NULL;
@@ -152,7 +153,7 @@ 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);
+       rka->callout_info = kmalloc(callout_len, GFP_KERNEL);
        if (!rka->callout_info) {
                kleave(" = -ENOMEM");
                kfree(rka);
@@ -186,7 +187,8 @@ struct key *request_key_auth_new(struct key *target, const char *callout_info)
        }
 
        rka->target_key = key_get(target);
-       strcpy(rka->callout_info, callout_info);
+       memcpy(rka->callout_info, callout_info, callout_len);
+       rka->callout_len = callout_len;
 
        /* allocate the auth key */
        sprintf(desc, "%x", target->serial);