Imported Upstream version 5.0.1

1 files changed, 13 insertions, 6 deletions

diff --git a/src/libstrongswan/crypto/prfs/prf.h b/src/libstrongswan/crypto/prfs/prf.h
index ad15205d3..46e23b244 100644
--- a/src/libstrongswan/crypto/prfs/prf.h
+++ b/src/libstrongswan/crypto/prfs/prf.h
@@ -71,28 +71,33 @@ extern enum_name_t *pseudo_random_function_names;
  * Generic interface for pseudo-random-functions.
  */
 struct prf_t {
+
 	/**
 	 * Generates pseudo random bytes and writes them in the buffer.
 	 *
 	 * @param seed		a chunk containing the seed for the next bytes
 	 * @param buffer	pointer where the generated bytes will be written
+	 * @return			TRUE if bytes generated successfully
 	 */
-	void (*get_bytes) (prf_t *this, chunk_t seed, u_int8_t *buffer);
+	bool (*get_bytes)(prf_t *this, chunk_t seed,
+					  u_int8_t *buffer) __attribute__((warn_unused_result));
 
 	/**
 	 * Generates pseudo random bytes and allocate space for them.
 	 *
 	 * @param seed		a chunk containing the seed for the next bytes
 	 * @param chunk		chunk which will hold generated bytes
+	 * @return			TRUE if bytes allocated and generated successfully
 	 */
-	void (*allocate_bytes) (prf_t *this, chunk_t seed, chunk_t *chunk);
+	bool (*allocate_bytes)(prf_t *this, chunk_t seed,
+						   chunk_t *chunk) __attribute__((warn_unused_result));
 
 	/**
 	 * Get the block size of this prf_t object.
 	 *
 	 * @return			block size in bytes
 	 */
-	size_t (*get_block_size) (prf_t *this);
+	size_t (*get_block_size)(prf_t *this);
 
 	/**
 	 * Get the key size of this prf_t object.
@@ -102,19 +107,21 @@ struct prf_t {
 	 *
 	 * @return			key size in bytes
 	 */
-	size_t (*get_key_size) (prf_t *this);
+	size_t (*get_key_size)(prf_t *this);
 
 	/**
 	 * Set the key for this prf_t object.
 	 *
 	 * @param key		key to set
+	 * @return			TRUE if key set successfully
 	 */
-	void (*set_key) (prf_t *this, chunk_t key);
+	bool (*set_key)(prf_t *this,
+					chunk_t key) __attribute__((warn_unused_result));
 
 	/**
 	 * Destroys a prf object.
 	 */
-	void (*destroy) (prf_t *this);
+	void (*destroy)(prf_t *this);
 };
 
 #endif /** PRF_H_ @}*/