linux-kernel - [PATCH v2] ipc.2: Fix prototype parameter types

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Date:   Sun,  7 Feb 2021 13:36:55 +0100
From:   Alejandro Colomar <alx.manpages@...il.com>
To:     mtk.manpages@...il.com
Cc:     Alejandro Colomar <alx.manpages@...il.com>,
        linux-man@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] ipc.2: Fix prototype parameter types

The types for some of the parameters are incorrect
(different than the kernel).  Fix them.
Below are shown the types that the kernel uses.

......

.../linux$ grep_syscall ipc
ipc/syscall.c:110:
SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
		unsigned long, third, void __user *, ptr, long, fifth)
ipc/syscall.c:205:
COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
	u32, third, compat_uptr_t, ptr, u32, fifth)
include/linux/compat.h:874:
asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
include/linux/syscalls.h:1221:
asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
		unsigned long third, void __user *ptr, long fifth);
.../linux$

function grep_syscall()
{
	if ! [ -v 1 ]; then
		>&2 echo "Usage: ${FUNCNAME[0]} <syscall>";
		return ${EX_USAGE};
	fi

	find * -type f \
	|grep '\.c$' \
	|sort -V \
	|xargs pcregrep -Mn "(?s)^\w*SYSCALL_DEFINE.\(${1},.*?\)" \
	|sed -E 's/^[^:]+:[0-9]+:/&\n/';

	find * -type f \
	|grep '\.[ch]$' \
	|sort -V \
	|xargs pcregrep -Mn "(?s)^asmlinkage\s+[\w\s]+\**sys_${1}\s*\(.*?\)" \
	|sed -E 's/^[^:]+:[0-9]+:/&\n/';
}

Signed-off-by: Alejandro Colomar <alx.manpages@...il.com>
---
 man2/ipc.2 | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/man2/ipc.2 b/man2/ipc.2
index 6589ffae6..a36e895a2 100644
--- a/man2/ipc.2
+++ b/man2/ipc.2
@@ -27,9 +27,8 @@
 ipc \- System V IPC system calls
 .SH SYNOPSIS
 .nf
-.BI "int ipc(unsigned int " call ", int " first ", int " second \
-", int " third ,
-.BI "        void *" ptr ", long " fifth );
+.BI "int ipc(unsigned int " call ", int " first ", unsigned long " second ,
+.BI "        unsigned long " third ", void *" ptr ", long " fifth );
 .fi
 .PP
 .IR Note :
-- 
2.30.0