From: Alejandro Colomar <alx.manpages@gmail.com>
Date: Sun, 4 Apr 2021 11:58:21 +0000 (+0200)
Subject: arch_prctl.2: Use syscall(SYS_...); for system calls without a wrapper
X-Git-Tag: man-pages-5.12~267
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9a96d8a5bfc6c24a7bfce79e71fde72eabb9c5e;p=thirdparty%2Fman-pages.git

arch_prctl.2: Use syscall(SYS_...); for system calls without a wrapper

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---

diff --git a/man2/arch_prctl.2 b/man2/arch_prctl.2
index 1ddeca595e..f8073d6252 100644
--- a/man2/arch_prctl.2
+++ b/man2/arch_prctl.2
@@ -27,15 +27,14 @@
 arch_prctl \- set architecture-specific thread state
 .SH SYNOPSIS
 .nf
-.B #include <asm/prctl.h>
+.BR "#include <asm/prctl.h>" "        /* Definition of " ARCH_* " constants */"
 .B #include <sys/prctl.h>
+.BR "#include <sys/syscall.h>" "      /* Definition of " SYS_* " constants */"
+.B #include <unistd.h>
 .PP
-.BI "int arch_prctl(int " code ", unsigned long " addr );
-.BI "int arch_prctl(int " code ", unsigned long *" addr );
+.BI "int syscall(SYS_arch_prctl, int " code ", unsigned long " addr );
+.BI "int syscall(SYS_arch_prctl, int " code ", unsigned long *" addr );
 .fi
-.PP
-.IR Note :
-There is no glibc wrapper for this system call; see NOTES.
 .SH DESCRIPTION
 .BR arch_prctl ()
 sets architecture-specific process or thread state.
@@ -177,9 +176,6 @@ and
 in the same thread is dangerous, as they may overwrite each other's
 TLS entries.
 .PP
-Glibc does not provide a wrapper for this system call; call it using
-.BR syscall (2).
-.PP
 .I FS
 may be already used by the threading library.
 Programs that use