From c6f10907c38ce49ddc321539f75aabf0a9ad6c71 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Mon, 15 Apr 2024 10:37:30 +0200
Subject: all: remove akaros support

Akaros support is unused, it was shutdown on syzbot for a while,
the akaros development seems to be frozen for years as well.
We have a bunch of hacks for Akaros since it supported
only super old gcc and haven't supported Go. Remove it.
---
 pkg/csource/gen.go       |  1 -
 pkg/csource/generated.go | 84 ++----------------------------------------------
 2 files changed, 3 insertions(+), 82 deletions(-)

(limited to 'pkg/csource')

diff --git a/pkg/csource/gen.go b/pkg/csource/gen.go
index d11fd2fbf..2a491ccd6 100644
--- a/pkg/csource/gen.go
+++ b/pkg/csource/gen.go
@@ -28,7 +28,6 @@ func main() {
 	}
 	executorFilenames := []string{
 		"common_linux.h",
-		"common_akaros.h",
 		"common_bsd.h",
 		"common_openbsd.h",
 		"common_fuchsia.h",
diff --git a/pkg/csource/generated.go b/pkg/csource/generated.go
index 83d58ab09..34b0d2c55 100644
--- a/pkg/csource/generated.go
+++ b/pkg/csource/generated.go
@@ -80,14 +80,6 @@ static __thread int clone_ongoing;
 static __thread int skip_segv;
 static __thread jmp_buf segv_env;
 
-#if GOOS_akaros
-#include <parlib/parlib.h>
-static void recover(void)
-{
-	_longjmp(segv_env, 1);
-}
-#endif
-
 static void segv_handler(int sig, siginfo_t* info, void* ctx)
 {
 
@@ -106,13 +98,7 @@ static void segv_handler(int sig, siginfo_t* info, void* ctx)
 #endif
 	if (skip && valid) {
 		debug("SIGSEGV on %p, skipping\n", (void*)addr);
-#if GOOS_akaros
-		struct user_context* uctx = (struct user_context*)ctx;
-		uctx->tf.hw_tf.tf_rip = (long)(void*)recover;
-		return;
-#else
 		_longjmp(segv_env, 1);
-#endif
 	}
 	debug("SIGSEGV on %p, exiting\n", (void*)addr);
 	doexit(sig);
@@ -212,7 +198,7 @@ static void use_temporary_dir(void)
 #endif
 #endif
 
-#if GOOS_akaros || GOOS_netbsd || GOOS_freebsd || GOOS_darwin || GOOS_openbsd || GOOS_test
+#if GOOS_netbsd || GOOS_freebsd || GOOS_darwin || GOOS_openbsd || GOOS_test
 #if (SYZ_EXECUTOR || SYZ_REPEAT) && SYZ_EXECUTOR_USES_FORK_SERVER && (SYZ_EXECUTOR || SYZ_USE_TMP_DIR)
 #include <dirent.h>
 #include <errno.h>
@@ -334,7 +320,7 @@ static void thread_start(void* (*fn)(void*), void* arg)
 #endif
 #endif
 
-#if GOOS_freebsd || GOOS_darwin || GOOS_netbsd || GOOS_openbsd || GOOS_akaros || GOOS_test
+#if GOOS_freebsd || GOOS_darwin || GOOS_netbsd || GOOS_openbsd || GOOS_test
 #if SYZ_EXECUTOR || SYZ_THREADED
 
 #include <pthread.h>
@@ -449,40 +435,7 @@ static uint16 csum_inet_digest(struct csum_inet* csum)
 }
 #endif
 
-#if GOOS_akaros
-
-#include <ros/syscall.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#if SYZ_EXECUTOR || SYZ_SANDBOX_NONE
-static void loop();
-static int do_sandbox_none(void)
-{
-	loop();
-	return 0;
-}
-#endif
-
-#if SYZ_EXECUTOR || SYZ_REPEAT
-static void execute_one();
-const char* program_name;
-
-void child()
-{
-#if SYZ_EXECUTOR || SYZ_HANDLE_SEGV
-	install_segv_handler();
-#endif
-#if SYZ_EXECUTOR
-	receive_execute();
-	close(kInPipeFd);
-#endif
-	execute_one();
-	doexit(0);
-}
-#endif
-
-#elif GOOS_freebsd || GOOS_darwin || GOOS_netbsd
+#if GOOS_freebsd || GOOS_darwin || GOOS_netbsd
 
 #include <unistd.h>
 
@@ -12596,11 +12549,6 @@ static void loop(void)
 #endif
 #if SYZ_EXECUTOR
 	reply_handshake();
-#endif
-#if SYZ_EXECUTOR && GOOS_akaros
-	int child_pipe[2];
-	if (pipe(child_pipe))
-		fail("pipe failed");
 #endif
 	int iter = 0;
 #if SYZ_REPEAT_TIMES
@@ -12634,15 +12582,6 @@ static void loop(void)
 #if SYZ_HAVE_SETUP_EXT_TEST
 			setup_ext_test();
 #endif
-#if GOOS_akaros
-#if SYZ_EXECUTOR
-			dup2(child_pipe[0], kInPipeFd);
-			close(child_pipe[0]);
-			close(child_pipe[1]);
-#endif
-			execl(program_name, program_name, "child", NULL);
-			fail("execl failed");
-#else
 #if SYZ_EXECUTOR
 			close(kInPipeFd);
 #endif
@@ -12654,13 +12593,8 @@ static void loop(void)
 			close_fds();
 #endif
 			doexit(0);
-#endif
 		}
 		debug("spawned worker pid %d\n", pid);
-
-#if SYZ_EXECUTOR && GOOS_akaros
-		resend_execute(child_pipe[1]);
-#endif
 		int status = 0;
 		uint64 start = current_time_ms();
 #if SYZ_EXECUTOR && SYZ_EXECUTOR_USES_SHMEM
@@ -12738,21 +12672,9 @@ void loop(void)
 #endif
 }
 #endif
-#if GOOS_akaros && SYZ_REPEAT
-#include <string.h>
-
-int main(int argc, char** argv)
-{
-	/*{{{MMAP_DATA}}}*/
-
-	program_name = argv[0];
-	if (argc == 2 && strcmp(argv[1], "child") == 0)
-		child();
-#else
 int main(void)
 {
 	/*{{{MMAP_DATA}}}*/
-#endif
 
 #if SYZ_SYSCTL
 	setup_sysctl();
-- 
cgit mrf-deployment