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[RFC,v3,03/17] arch_prctl.2: Use syscall(SYS_...); for system calls without a wrapper

Message ID 20210313192526.350200-4-alx.manpages@gmail.com
State New
Headers show
Series [RFC] execve.2: SYNOPSIS: Document both glibc wrapper and kernel sycalls | expand

Commit Message

Alejandro Colomar March 13, 2021, 7:25 p.m. UTC 
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
---
 man2/arch_prctl.2 | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)
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Patch

diff --git a/man2/arch_prctl.2 b/man2/arch_prctl.2
index f9a9dc39d..8706cd1ec 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