linux-kernel - [PATCH 07/10] tools/nolibc: move syscall() to sys/syscall.h

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250416-nolibc-split-sys-v1-7-a069a3f1d145@linutronix.de>
Date: Wed, 16 Apr 2025 14:06:22 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Willy Tarreau <w@....eu>, 
 Thomas Weißschuh <linux@...ssschuh.net>
Cc: linux-kernel@...r.kernel.org, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 07/10] tools/nolibc: move syscall() to sys/syscall.h

This is the location regular userspace expects the definition.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 tools/include/nolibc/Makefile      |  1 +
 tools/include/nolibc/nolibc.h      |  1 +
 tools/include/nolibc/sys/syscall.h | 19 +++++++++++++++++++
 tools/include/nolibc/unistd.h      |  6 ------
 4 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
index 747d73b453680a32d1b8748640f2ebd1ae9b1fb4..65c3b90f8ba9213401900a8568469bb2c5770dd6 100644
--- a/tools/include/nolibc/Makefile
+++ b/tools/include/nolibc/Makefile
@@ -47,6 +47,7 @@ all_files := \
 		sys/auxv.h \
 		sys/mman.h \
 		sys/stat.h \
+		sys/syscall.h \
 		time.h \
 		types.h \
 		unistd.h \
diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 8296cbbeebe994aa335b561a2d9986e529e001a6..cb5705d55d80862b0c942bffb6c38db7626aac86 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -99,6 +99,7 @@
 #include "sys/auxv.h"
 #include "sys/mman.h"
 #include "sys/stat.h"
+#include "sys/syscall.h"
 #include "ctype.h"
 #include "elf.h"
 #include "signal.h"
diff --git a/tools/include/nolibc/sys/syscall.h b/tools/include/nolibc/sys/syscall.h
new file mode 100644
index 0000000000000000000000000000000000000000..59efdec8fd1c8cd9f282d1e9ea52431003342a7f
--- /dev/null
+++ b/tools/include/nolibc/sys/syscall.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * syscall() definition for NOLIBC
+ * Copyright (C) 2024 Thomas Weißschuh <linux@...ssschuh.net>
+ */
+
+#ifndef _NOLIBC_SYS_SYSCALL_H
+#define _NOLIBC_SYS_SYSCALL_H
+
+#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
+#define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
+#define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__))
+#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)
+#define syscall(...) _syscall_n(_syscall_narg(__VA_ARGS__), ##__VA_ARGS__)
+
+/* make sure to include all global symbols */
+#include "../nolibc.h"
+
+#endif /* _NOLIBC_SYS_SYSCALL_H */
diff --git a/tools/include/nolibc/unistd.h b/tools/include/nolibc/unistd.h
index e38f3660c0517d757de1ae497b61c4f61b9f1cdc..ac7d53d986cd11ac84dd0a17e5a7055c779b2b10 100644
--- a/tools/include/nolibc/unistd.h
+++ b/tools/include/nolibc/unistd.h
@@ -56,12 +56,6 @@ int tcsetpgrp(int fd, pid_t pid)
 	return ioctl(fd, TIOCSPGRP, &pid);
 }
 
-#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
-#define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
-#define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__))
-#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)
-#define syscall(...) _syscall_n(_syscall_narg(__VA_ARGS__), ##__VA_ARGS__)
-
 /* make sure to include all global symbols */
 #include "nolibc.h"
 

-- 
2.49.0