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* [iptables PATCH] include: linux: Update kernel.h
@ 2023-09-06 17:08 Phil Sutter
  2023-09-14 10:36 ` Phil Sutter
  0 siblings, 1 reply; 2+ messages in thread
From: Phil Sutter @ 2023-09-06 17:08 UTC (permalink / raw)
  To: netfilter-devel

Its contents were moved into const.h and sysinfo.h, apply these changes
to the cached copies. Fixes for the following warning when compiling
xtables-monitor.c with new kernel headers in /usr/include:

| In file included from ../include/linux/netfilter/x_tables.h:3,
|                  from ../include/xtables.h:19,
|                  from xtables-monitor.c:36:
| ../include/linux/kernel.h:7: warning: "__ALIGN_KERNEL" redefined
|     7 | #define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
|       |
| In file included from /usr/include/linux/netlink.h:5,
|                  from /home/n0-1/git/libmnl/install/include/libmnl/libmnl.h:9,
|                  from xtables-monitor.c:30:
| /usr/include/linux/const.h:31: note: this is the location of the previous definition
|    31 | #define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1)
|       |

Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 include/linux/const.h   | 36 ++++++++++++++++++++++++++++++++++++
 include/linux/kernel.h  | 29 ++++-------------------------
 include/linux/sysinfo.h | 25 +++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 25 deletions(-)
 create mode 100644 include/linux/const.h
 create mode 100644 include/linux/sysinfo.h

diff --git a/include/linux/const.h b/include/linux/const.h
new file mode 100644
index 0000000000000..1eb84b5087f8a
--- /dev/null
+++ b/include/linux/const.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* const.h: Macros for dealing with constants.  */
+
+#ifndef _LINUX_CONST_H
+#define _LINUX_CONST_H
+
+/* Some constant macros are used in both assembler and
+ * C code.  Therefore we cannot annotate them always with
+ * 'UL' and other type specifiers unilaterally.  We
+ * use the following macros to deal with this.
+ *
+ * Similarly, _AT() will cast an expression with a type in C, but
+ * leave it unchanged in asm.
+ */
+
+#ifdef __ASSEMBLY__
+#define _AC(X,Y)	X
+#define _AT(T,X)	X
+#else
+#define __AC(X,Y)	(X##Y)
+#define _AC(X,Y)	__AC(X,Y)
+#define _AT(T,X)	((T)(X))
+#endif
+
+#define _UL(x)		(_AC(x, UL))
+#define _ULL(x)		(_AC(x, ULL))
+
+#define _BITUL(x)	(_UL(1) << (x))
+#define _BITULL(x)	(_ULL(1) << (x))
+
+#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+
+#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
+#endif /* _LINUX_CONST_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d4c59f6557d35..5413a8c50bfe4 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -1,29 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _LINUX_KERNEL_H
 #define _LINUX_KERNEL_H
 
-/*
- * 'kernel.h' contains some often-used function prototypes etc
- */
-#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+#include <linux/sysinfo.h>
+#include <linux/const.h>
 
-
-#define SI_LOAD_SHIFT	16
-struct sysinfo {
-	long uptime;			/* Seconds since boot */
-	unsigned long loads[3];		/* 1, 5, and 15 minute load averages */
-	unsigned long totalram;		/* Total usable main memory size */
-	unsigned long freeram;		/* Available memory size */
-	unsigned long sharedram;	/* Amount of shared memory */
-	unsigned long bufferram;	/* Memory used by buffers */
-	unsigned long totalswap;	/* Total swap space size */
-	unsigned long freeswap;		/* swap space still available */
-	unsigned short procs;		/* Number of current processes */
-	unsigned short pad;		/* explicit padding for m68k */
-	unsigned long totalhigh;	/* Total high memory size */
-	unsigned long freehigh;		/* Available high memory size */
-	unsigned int mem_unit;		/* Memory unit size in bytes */
-	char _f[20-2*sizeof(long)-sizeof(int)];	/* Padding: libc5 uses this.. */
-};
-
-#endif
+#endif /* _LINUX_KERNEL_H */
diff --git a/include/linux/sysinfo.h b/include/linux/sysinfo.h
new file mode 100644
index 0000000000000..435d5c23f0c0e
--- /dev/null
+++ b/include/linux/sysinfo.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_SYSINFO_H
+#define _LINUX_SYSINFO_H
+
+#include <linux/types.h>
+
+#define SI_LOAD_SHIFT	16
+struct sysinfo {
+	__kernel_long_t uptime;		/* Seconds since boot */
+	__kernel_ulong_t loads[3];	/* 1, 5, and 15 minute load averages */
+	__kernel_ulong_t totalram;	/* Total usable main memory size */
+	__kernel_ulong_t freeram;	/* Available memory size */
+	__kernel_ulong_t sharedram;	/* Amount of shared memory */
+	__kernel_ulong_t bufferram;	/* Memory used by buffers */
+	__kernel_ulong_t totalswap;	/* Total swap space size */
+	__kernel_ulong_t freeswap;	/* swap space still available */
+	__u16 procs;		   	/* Number of current processes */
+	__u16 pad;		   	/* Explicit padding for m68k */
+	__kernel_ulong_t totalhigh;	/* Total high memory size */
+	__kernel_ulong_t freehigh;	/* Available high memory size */
+	__u32 mem_unit;			/* Memory unit size in bytes */
+	char _f[20-2*sizeof(__kernel_ulong_t)-sizeof(__u32)];	/* Padding: libc5 uses this.. */
+};
+
+#endif /* _LINUX_SYSINFO_H */
-- 
2.41.0


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