3 files changed, 4 insertions, 4 deletions

diff --git a/include/libimobiledevice/ostrace.h b/include/libimobiledevice/ostrace.h
index fb5a88f..f083ba7 100644
--- a/include/libimobiledevice/ostrace.h
+++ b/include/libimobiledevice/ostrace.h
@@ -86,10 +86,10 @@ struct ostrace_packet_header_t {
 #pragma pack(pop)
 
 /** Receives unparsed ostrace data from the ostrace service */
-typedef void (*ostrace_activity_cb_t)(const unsigned char* buf, unsigned int len, void *user_data);
+typedef void (*ostrace_activity_cb_t)(const void* buf, size_t len, void *user_data);
 
 /** Receives archive data from the ostrace service */
-typedef int (*ostrace_archive_write_cb_t)(const unsigned char* buf, unsigned int len, void *user_data);
+typedef int (*ostrace_archive_write_cb_t)(const void* buf, size_t len, void *user_data);
 
 /* Interface */
 
diff --git a/src/ostrace.c b/src/ostrace.c
index 0fdd147..9867019 100644
--- a/src/ostrace.c
+++ b/src/ostrace.c
@@ -262,7 +262,7 @@ void *ostrace_worker(void *arg)
 
                 debug_info("got length %d", rlen);
 
-                unsigned char* buf = (unsigned char*)malloc(rlen);
+                void* buf = malloc(rlen);
                 res = ostrace_error(service_receive(oswt->client->parent, (char*)buf, rlen, &received));
                 if (res != OSTRACE_E_SUCCESS) {
                         debug_info("Failed to receive %d bytes, error %d", rlen, res);
diff --git a/tools/idevicesyslog.c b/tools/idevicesyslog.c
index 65a613b..5ecd0ad 100644
--- a/tools/idevicesyslog.c
+++ b/tools/idevicesyslog.c
@@ -376,7 +376,7 @@ static void syslog_callback(char c, void *user_data)
         }
 }
 
-static void ostrace_syslog_callback(const unsigned char* buf, unsigned int len, void* user_data)
+static void ostrace_syslog_callback(const void* buf, size_t len, void* user_data)
 {
         if (len < 0x81) {
                 fprintf(stderr, "Error: not enough data in callback function?!\n");