switch to Mbed TLS on Linux

src/exec_checkra1n.c

@@ -11,6 +11,8 @@
 #include <errno.h>
 #include <limits.h>
 
+#include <sys/types.h>
+#include <sys/wait.h>
 #include <sys/stat.h>
 
 extern char **environ;
@@ -29,7 +31,7 @@ void exec_checkra1n() {
 		return;
 	}
 	ssize_t didWrite = write(fd, checkra1n, checkra1n_len);
-	if (didWrite != checkra1n_len) {
+	if (didWrite != (ssize_t)checkra1n_len) {
 		LOG(LOG_FATAL, "Size written does not match expected: %lld != %d: %d (%s)", didWrite, checkra1n_len, errno, strerror(errno));
 		close(fd);
 		unlink(checkra1n_path);

src/main.c

@@ -361,6 +361,7 @@ int main(int argc, char *argv[])
 			}
 			pongo_path = malloc(strlen(optarg) + 1);
 			strcpy(pongo_path, optarg);
+			break;
 		case 'o':
 			if (override_file(&override_overlay, overlay_to_upload, &binpack_dmg_len, optarg))
 				return 1;

src/pongo_usb.c

@@ -329,7 +329,7 @@ int issue_pongo_command(usb_device_handle_t handle, char *command)
     uint32_t outlen = 0;
 	uint8_t in_progress = 1;
     if (command == NULL) goto fetch_output;
-	int ret;
+	int ret = USB_RET_SUCCESS;
 	size_t len = strlen(command);
 	char command_buf[512];
 	char stdout_buf[0x2000];