ld: use unistd i/o functions to open/read library files

sys/ld/CMakeLists.txt

@@ -10,7 +10,7 @@ set_target_properties(ld PROPERTIES
 	SUFFIX ".so")
 
 target_link_libraries(ld
-	libc-core libc-malloc libmango librosetta
+	libc-core libc-malloc libc-io libmango librosetta libxpc-static
 	interface::fs)
 
 target_compile_options(ld PRIVATE

sys/ld/main.c

@@ -1,6 +1,7 @@
 #define MSG_IMPLEMENTATION
 #define MSG_NO_MALLOC
 
+#include <errno.h>
 #include <heap/heap.h>
 #include <mango/log.h>
 #include <mango/msg.h>
@@ -12,6 +13,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/remote.h>
 #include <unistd.h>
 
 int main(const struct rosetta_bootstrap *bs)
@@ -24,32 +26,39 @@ int main(const struct rosetta_bootstrap *bs)
 		kern_logf("argv[%zu]: %s", i, bs->bs_argv[i]);
 	}
 
-	kern_handle_t port;
-	kern_status_t status = port_create(&port);
-	if (status != KERN_OK) {
-		kern_logf("port creation failed %d", status);
-		return -1;
-	}
-
-	port_connect(port, 0, 0);
-
+	sys_remote_set(SYS_REMOTE_NSD, 0, 0);
 	const char *path = "/usr/lib/libc.so";
 	int flags = 4;
-	int err = 0;
+	int fd = open(path, flags);
 
 	kern_logf("sending msg: open(%s, %d)", path, flags);
-	status = fs_open(port, path, flags, &err);
 
-	if (status != KERN_OK) {
-		kern_logf("open call failed (status %d)", status);
-	} else {
+	if (fd < 0) {
 		kern_logf(
 			"open(%s, %d) = %s (%s)",
 			path,
 			flags,
-			strerror_code(err),
-			strerror(err));
+			strerror_code(fd),
+			strerror(fd));
+		return -1;
 	}
 
+	kern_logf(
+		"open(%s, %d) = %s (%s)",
+		path,
+		flags,
+		strerror_code(SUCCESS),
+		strerror(SUCCESS));
+
+	unsigned char buf[32] = {0};
+	int nr = read(fd, buf, sizeof buf);
+
+	if (nr < 0) {
+		kern_logf("read call failed (%s)", strerror(nr));
+		return -1;
+	}
+
+	kern_logf("data: %x %c %c %c", buf[0], buf[1], buf[2], buf[3]);
+
 	return 0;
 }