eCryptfs: Replace miscdev read/write magic numbers

[pandora-kernel.git] / fs / ecryptfs / keystore.c

diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index ac1ad48..725f9c0 100644 (file)
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -109,7 +109,7 @@ int ecryptfs_parse_packet_length(unsigned char *data, size_t *size,
                (*size) += ((unsigned char)(data[1]) + 192);
                (*length_size) = 2;
        } else if (data[0] == 255) {
-               /* Five-byte length; we're not supposed to see this */
+               /* If support is added, adjust ECRYPTFS_MAX_PKT_LEN_SIZE */
                ecryptfs_printk(KERN_ERR, "Five-byte packet length not "
                                "supported\n");
                rc = -EINVAL;
@@ -126,7 +126,7 @@ out:
 /**
  * ecryptfs_write_packet_length
  * @dest: The byte array target into which to write the length. Must
- *        have at least 5 bytes allocated.
+ *        have at least ECRYPTFS_MAX_PKT_LEN_SIZE bytes allocated.
  * @size: The length to write.
  * @packet_size_length: The number of bytes used to encode the packet
  *                      length is written to this address.
@@ -146,6 +146,7 @@ int ecryptfs_write_packet_length(char *dest, size_t size,
                dest[1] = ((size - 192) % 256);
                (*packet_size_length) = 2;
        } else {
+               /* If support is added, adjust ECRYPTFS_MAX_PKT_LEN_SIZE */
                rc = -EINVAL;
                ecryptfs_printk(KERN_WARNING,
                                "Unsupported packet size: [%zd]\n", size);
@@ -1151,7 +1152,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
        struct ecryptfs_msg_ctx *msg_ctx;
        struct ecryptfs_message *msg = NULL;
        char *auth_tok_sig;
-       char *payload;
+       char *payload = NULL;
        size_t payload_len;
        int rc;
 
@@ -1206,6 +1207,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
 out:
        if (msg)
                kfree(msg);
+       kfree(payload);
        return rc;
 }