linux-kernel - [PATCH 7/9] tools/nolibc: move uname() and friends to sys/utsname.h

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Message-Id: <20250515-nolibc-sys-v1-7-74f82eea3b59@weissschuh.net>
Date: Thu, 15 May 2025 21:57:53 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 7/9] tools/nolibc: move uname() and friends to
 sys/utsname.h

This is the location regular userspace expects these definitions.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/include/nolibc/Makefile      |  1 +
 tools/include/nolibc/nolibc.h      |  1 +
 tools/include/nolibc/sys.h         | 27 ------------------------
 tools/include/nolibc/sys/utsname.h | 42 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 44 insertions(+), 27 deletions(-)

diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
index ae04de46cdfeb2080d95b60c3d16e1c9f3692c9c..0ff06374577df457b0611d91dcfe637a05476364 100644
--- a/tools/include/nolibc/Makefile
+++ b/tools/include/nolibc/Makefile
@@ -62,6 +62,7 @@ all_files := \
 		sys/time.h \
 		sys/timerfd.h \
 		sys/types.h \
+		sys/utsname.h \
 		sys/wait.h \
 		time.h \
 		types.h \
diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 182dcfce126638db1cc9fd3fa79ab99835b42c26..c199ade200c240ef4081f767a162698256f39677 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -109,6 +109,7 @@
 #include "sys/sysmacros.h"
 #include "sys/time.h"
 #include "sys/timerfd.h"
+#include "sys/utsname.h"
 #include "sys/wait.h"
 #include "ctype.h"
 #include "elf.h"
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 282909b1992d17d5292917fbabb0bd2a2dbfce88..9556c69a6ae1ff0f19d884f5022599fc31e04f1f 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -23,7 +23,6 @@
 #include <linux/auxvec.h>
 #include <linux/fcntl.h> /* for O_* and AT_* */
 #include <linux/stat.h>  /* for statx() */
-#include <linux/utsname.h>
 
 #include "errno.h"
 #include "stdarg.h"
@@ -894,32 +893,6 @@ int umount2(const char *path, int flags)
 }
 
 
-/*
- * int uname(struct utsname *buf);
- */
-
-struct utsname {
-	char sysname[65];
-	char nodename[65];
-	char release[65];
-	char version[65];
-	char machine[65];
-	char domainname[65];
-};
-
-static __attribute__((unused))
-int sys_uname(struct utsname *buf)
-{
-	return my_syscall1(__NR_uname, buf);
-}
-
-static __attribute__((unused))
-int uname(struct utsname *buf)
-{
-	return __sysret(sys_uname(buf));
-}
-
-
 /*
  * int unlink(const char *path);
  */
diff --git a/tools/include/nolibc/sys/utsname.h b/tools/include/nolibc/sys/utsname.h
new file mode 100644
index 0000000000000000000000000000000000000000..3adda115085069403253c2a276de1e2ae9bb1ad3
--- /dev/null
+++ b/tools/include/nolibc/sys/utsname.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Utsname definitions for NOLIBC
+ * Copyright (C) 2017-2021 Willy Tarreau <w@....eu>
+ */
+
+/* make sure to include all global symbols */
+#include "nolibc.h"
+
+#ifndef _NOLIBC_SYS_UTSNAME_H
+#define _NOLIBC_SYS_UTSNAME_H
+
+#include "../sys.h"
+
+#include <linux/utsname.h>
+
+/*
+ * int uname(struct utsname *buf);
+ */
+
+struct utsname {
+	char sysname[65];
+	char nodename[65];
+	char release[65];
+	char version[65];
+	char machine[65];
+	char domainname[65];
+};
+
+static __attribute__((unused))
+int sys_uname(struct utsname *buf)
+{
+	return my_syscall1(__NR_uname, buf);
+}
+
+static __attribute__((unused))
+int uname(struct utsname *buf)
+{
+	return __sysret(sys_uname(buf));
+}
+
+#endif /* _NOLIBC_SYS_UTSNAME_H */

-- 
2.49.0