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authorWilly Tarreau <w@1wt.eu>2022-02-07 19:23:48 +0300
committerPaul E. McKenney <paulmck@kernel.org>2022-04-21 03:05:45 +0300
commit45a794bf7cee2988278802aeb64f7fc075f45f7f (patch)
tree8ebc66cb3f742c6e78dfae90f33cb3d4e8069c86
parent8d304a3740232f018fca19d529cbc8d13afac755 (diff)
downloadlinux-45a794bf7cee2988278802aeb64f7fc075f45f7f.tar.xz
tools/nolibc/errno: extract errno.h from sys.h
This allows us to provide a minimal errno.h to ease porting applications that use it. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
-rw-r--r--tools/include/nolibc/errno.h27
-rw-r--r--tools/include/nolibc/stdio.h1
-rw-r--r--tools/include/nolibc/sys.h17
3 files changed, 29 insertions, 16 deletions
diff --git a/tools/include/nolibc/errno.h b/tools/include/nolibc/errno.h
new file mode 100644
index 000000000000..06893d6dfb7a
--- /dev/null
+++ b/tools/include/nolibc/errno.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Minimal errno definitions for NOLIBC
+ * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
+ */
+
+#ifndef _NOLIBC_ERRNO_H
+#define _NOLIBC_ERRNO_H
+
+#include <asm/errno.h>
+
+/* this way it will be removed if unused */
+static int errno;
+
+#ifndef NOLIBC_IGNORE_ERRNO
+#define SET_ERRNO(v) do { errno = (v); } while (0)
+#else
+#define SET_ERRNO(v) do { } while (0)
+#endif
+
+
+/* errno codes all ensure that they will not conflict with a valid pointer
+ * because they all correspond to the highest addressable memory page.
+ */
+#define MAX_ERRNO 4095
+
+#endif /* _NOLIBC_ERRNO_H */
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h
index 5f1cf32470d3..cb4d3ab3a565 100644
--- a/tools/include/nolibc/stdio.h
+++ b/tools/include/nolibc/stdio.h
@@ -11,6 +11,7 @@
#include "std.h"
#include "arch.h"
+#include "errno.h"
#include "types.h"
#include "sys.h"
#include "stdlib.h"
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index ef017cc0a580..28437863c63f 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -14,29 +14,14 @@
#include <asm/unistd.h>
#include <asm/signal.h> // for SIGCHLD
#include <asm/ioctls.h>
-#include <asm/errno.h>
#include <linux/fs.h>
#include <linux/loop.h>
#include <linux/time.h>
#include "arch.h"
+#include "errno.h"
#include "types.h"
-/* this way it will be removed if unused */
-static int errno;
-
-#ifndef NOLIBC_IGNORE_ERRNO
-#define SET_ERRNO(v) do { errno = (v); } while (0)
-#else
-#define SET_ERRNO(v) do { } while (0)
-#endif
-
-
-/* errno codes all ensure that they will not conflict with a valid pointer
- * because they all correspond to the highest addressable memory page.
- */
-#define MAX_ERRNO 4095
-
/* Functions in this file only describe syscalls. They're declared static so
* that the compiler usually decides to inline them while still being allowed