bootstrap: replace fs stub msg handlers with libfs

sys/bootstrap/CMakeLists.txt

@@ -5,10 +5,12 @@ set_property(SOURCE ${arch_sources} PROPERTY LANGUAGE C)
 
 add_executable(bootstrap ${c_sources} ${arch_sources})
 
-target_link_libraries(bootstrap libmango ulibc liblaunch interface::fs)
+target_link_libraries(bootstrap
+	libmango libc-core libc-malloc libfs-static liblaunch
+	interface::fs)
 
 target_compile_options(bootstrap PRIVATE
-	-fPIC -pie -fno-stack-protector -nostdlib -ffreestanding)
+	 -fno-stack-protector -nostdlib -ffreestanding)
 target_link_options(bootstrap PRIVATE
-	-fPIC -static -pie -nostdlib -ffreestanding
-	-T ${CMAKE_CURRENT_SOURCE_DIR}/arch/${TARGET_ARCH}/layout.ld)
+	 -static -nostdlib -ffreestanding)
+	#-T ${CMAKE_CURRENT_SOURCE_DIR}/arch/${TARGET_ARCH}/layout.ld)

sys/bootstrap/arch/x86_64/layout.ld

@@ -15,6 +15,5 @@ SECTIONS {
 
 	/DISCARD/ : {
 		*(.interp)
-		*(.dynamic)
 	}
 }

sys/bootstrap/main.c

@@ -1,12 +1,17 @@
 #define MSG_IMPLEMENTATION
 #define MSG_NO_MALLOC
+
 #include "tar.h"
 
+#include <fs/allocator.h>
+#include <fs/context.h>
+#include <heap/heap.h>
 #include <launch.h>
 #include <mango/log.h>
 #include <mango/msg.h>
 #include <mango/task.h>
 #include <mango/types.h>
+#include <rosetta/bootstrap.h>
 #include <rosetta/fs.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -47,29 +52,41 @@ static enum launch_status resolve_dependency(
 	return LAUNCH_OK;
 }
 
-static kern_status_t open(const char *path, int flags, int *out_err)
+static kern_status_t open(
+	const struct msg_endpoint *sender,
+	const char *path,
+	int flags,
+	int *out_err,
+	void *arg)
 {
-	kern_logf("received msg: open(%s, %d)", path, flags);
+	kern_logf(
+		"received msg: [%u.%x] open(%s, %d)",
+		sender->e_task,
+		sender->e_port,
+		path,
+		flags);
 	*out_err = 13;
 	return KERN_OK;
 }
 
-static kern_status_t uppercase(const char *old, struct msg_string *new)
+static void *_fs_alloc(struct fs_allocator *alloc, size_t count)
 {
-	kern_logf("received msg: uppercase(%s)", old);
-	size_t i;
-	for (i = 0; old[i] && i < new->str_max - 1; i++) {
-		char c = old[i];
-		if (c >= 'a' && c <= 'z') {
-			new->str_buf[i] = old[i] - 'a' + 'A';
-		} else {
-			new->str_buf[i] = old[i];
-		}
-	}
+	return heap_alloc(alloc->fs_arg, count);
+}
 
-	new->str_len = i - 1;
-	new->str_buf[i] = 0;
-	return KERN_OK;
+static void *_fs_calloc(struct fs_allocator *alloc, size_t count, size_t sz)
+{
+	return heap_calloc(alloc->fs_arg, count, sz);
+}
+
+static void *_fs_realloc(struct fs_allocator *alloc, void *p, size_t count)
+{
+	return heap_realloc(alloc->fs_arg, p, count);
+}
+
+static void _fs_free(struct fs_allocator *alloc, void *p)
+{
+	heap_free(alloc->fs_arg, p);
 }
 
 int main(
@@ -106,12 +123,36 @@ int main(
 
 	struct launch_ctx launch;
 	struct launch_result result;
+	const char *init_argv[] = {
+		"init",
+		"arg1",
+		"arg2",
+		"arg3",
+	};
+	const char *init_env[] = {
+		"TESTVAR=testvalue",
+	};
+	struct rosetta_bootstrap_channel init_channels[] = {
+		{
+			.c_type = RSBS_CHANNEL_SYSTEM,
+			.c_tid = 0,
+			.c_cid = 0,
+		},
+	};
+
 	struct launch_parameters params = {
 		.p_executable = image,
 		.p_parent_task = task,
 		.p_task_name = "init",
 		.p_local_address_space = address_space,
 		.p_resolver_arg = &bsp,
+		.p_argc = sizeof init_argv / sizeof init_argv[0],
+		.p_argv = init_argv,
+		.p_envc = sizeof init_env / sizeof init_env[0],
+		.p_envp = init_env,
+		.p_channel_count
+		= sizeof init_channels / sizeof init_channels[0],
+		.p_channels = init_channels,
 	};
 
 	kern_handle_t channel;
@@ -122,33 +163,67 @@ int main(
 
 	enum launch_status status
 		= launch_ctx_execute(&launch, &params, LAUNCH_F_NONE, &result);
-	kern_logf("launch result: %d", status);
+	if (status != KERN_OK) {
+		kern_logf("failed to start init: %d", status);
+		return -1;
+	}
 
-	const struct fs_vtable fs_vtable = {
-		.open = open,
-		.uppercase = uppercase,
+	heap_t heap = HEAP_INIT;
+
+	struct fs_allocator fs_allocator = {
+		.fs_alloc = _fs_alloc,
+		.fs_calloc = _fs_calloc,
+		.fs_realloc = _fs_realloc,
+		.fs_free = _fs_free,
+		.fs_arg = &heap,
 	};
-#if 1
+
+	struct fs_context *fs = fs_context_create(&fs_allocator, NULL);
+	if (!fs) {
+		kern_logf("cannot initialise fs");
+		return -1;
+	}
 
 	while (1) {
-		msgid_t id;
+		struct msg_endpoint sender;
 		struct msg_header hdr;
-		kern_status_t status = msg_recv_generic(channel, &id, &hdr);
+		kern_msg_handle_t handles[KERN_MSG_MAX_HANDLES] = {0};
+		kern_status_t status = msg_recv_generic(
+			channel,
+			&sender,
+			&hdr,
+			handles,
+			KERN_MSG_MAX_HANDLES);
 		if (status != KERN_OK) {
 			kern_logf("message recv error %d", status);
+			msg_reply_generic(
+				channel,
+				&sender,
+				&hdr,
+				KERN_UNSUPPORTED);
 			continue;
 		}
 
-		if (hdr.hdr_protocol != PROTOCOL_FS) {
+		switch (hdr.hdr_protocol) {
+		case PROTOCOL_FS:
+			status = fs_context_dispatch_msg(
+				fs,
+				channel,
+				&sender,
+				&hdr);
+			break;
+		default:
 			kern_logf(
 				"unknown message protocol %u",
 				hdr.hdr_protocol);
-			continue;
+			msg_reply_generic(
+				channel,
+				&sender,
+				&hdr,
+				KERN_UNSUPPORTED);
+			break;
+		}
 	}
 
-		status = fs_dispatch(channel, &fs_vtable, id, &hdr);
-	}
-#endif
-
-	return 102;
+	return 0;
 }