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Consolidate Linux accept implementation

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This patch consolidates the accept Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c.  The changes are:

  1. Remove accept from auto-generation syscalls.list on the architecture
     that uses __NR_accept.
  2. Define __NR_accept as default (__ASSUME_ACCEPT_SYSCALL) and undef for
     architectures that do not support it.
  3. Remove __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL and decide to use
     __NR_accept4 for accept generation based on __ASSUME_ACCEPT4_SYSCALL.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace
	__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL.
	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove accept from
	auto-generation list.
	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): New define.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Define wheter kernel version supports.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine for 32 bits.
This commit is contained in:
Adhemerval Zanella 2016-11-17 18:13:44 -02:00 committed by Adhemerval Zanella
parent 9a56f87183
commit 01061a7cab
18 changed files with 45 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
ChangeLog
View File

@ -1,3 +1,36 @@
2016-03-08 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace
__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL.
* sysdeps/unix/sysv/linux/alpha/syscalls.list?: Remove accept from
auto-generation list.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): New define.
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Define wheter kernel version supports.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Define.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/s390/kernel-features.h
(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/sh/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine.
* sysdeps/unix/sysv/linux/sparc/kernel-features.h
(__ASSUME_ACCEPT_SYSCALL): Undefine for 32 bits.
2017-03-08 Yury Norov <ynorov@caviumnetworks.com>
Zack Weinberg <zackw@panix.com>

7
sysdeps/unix/sysv/linux/accept.c
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@ -15,21 +15,16 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <sys/socket.h>
#include <sysdep-cancel.h>
#include <socketcall.h>
#include <sys/syscall.h>
#include <kernel-features.h>
int
__libc_accept (int fd, __SOCKADDR_ARG addr, socklen_t *len)
{
#ifdef __ASSUME_ACCEPT_SYSCALL
return SYSCALL_CANCEL (accept, fd, addr.__sockaddr__, len);
#elif defined __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL
#elif defined __ASSUME_ACCEPT4_SYSCALL
return SYSCALL_CANCEL (accept4, fd, addr.__sockaddr__, len, 0);
#else
return SOCKETCALL_CANCEL (accept, fd, addr.__sockaddr__, len);

1
sysdeps/unix/sysv/linux/alpha/syscalls.list
View File

@ -5,7 +5,6 @@ sigstack - sigstack 2 sigstack
getpriority - getpriority i:ii __getpriority getpriority
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername

1
sysdeps/unix/sysv/linux/arm/syscalls.list
View File

@ -22,7 +22,6 @@ fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername

1
sysdeps/unix/sysv/linux/generic/syscalls.list
View File

@ -5,7 +5,6 @@ socket - socket i:iii __socket socket
socketpair - socketpair i:iiif __socketpair socketpair
bind - bind i:ipi __bind bind
listen - listen i:ii __listen listen
accept - accept Ci:iBN __libc_accept __accept accept
connect - connect Ci:ipi __libc_connect __connect connect
getsockname - getsockname i:ipp __getsockname getsockname
getpeername - getpeername i:ipp __getpeername getpeername

1
sysdeps/unix/sysv/linux/hppa/syscalls.list
View File

@ -1,7 +1,6 @@
# File name Caller Syscall name # args Strong name Weak names
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername

3
sysdeps/unix/sysv/linux/i386/kernel-features.h
View File

@ -33,7 +33,6 @@
# define __ASSUME_BIND_SYSCALL 1
# define __ASSUME_CONNECT_SYSCALL 1
# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
# define __ASSUME_GETSOCKOPT_SYSCALL 1
# define __ASSUME_SETSOCKOPT_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
@ -47,6 +46,8 @@
#include_next <kernel-features.h>
#undef __ASSUME_ACCEPT_SYSCALL
#if __LINUX_KERNEL_VERSION < 0x040300
# undef __ASSUME_ACCEPT4_SYSCALL
# undef __ASSUME_SENDMSG_SYSCALL

1
sysdeps/unix/sysv/linux/ia64/syscalls.list
View File

@ -5,7 +5,6 @@ umount2 - umount 2 __umount2 umount2
getpriority - getpriority i:ii __getpriority getpriority
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername

1
sysdeps/unix/sysv/linux/kernel-features.h
View File

@ -147,6 +147,7 @@
separate syscalls were only added later. */
#define __ASSUME_SENDMSG_SYSCALL 1
#define __ASSUME_RECVMSG_SYSCALL 1
#define __ASSUME_ACCEPT_SYSCALL 1
/* Support for SysV IPC through wired syscalls. All supported architectures
either support ipc syscall and/or all the ipc correspondent syscalls. */

3
sysdeps/unix/sysv/linux/m68k/kernel-features.h
View File

@ -27,7 +27,6 @@
# define __ASSUME_BIND_SYSCALL 1
# define __ASSUME_CONNECT_SYSCALL 1
# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
# define __ASSUME_GETSOCKOPT_SYSCALL 1
# define __ASSUME_SETSOCKOPT_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
@ -41,6 +40,8 @@
#include_next <kernel-features.h>
#undef __ASSUME_ACCEPT_SYSCALL
#if __LINUX_KERNEL_VERSION < 0x040300
# undef __ASSUME_ACCEPT4_SYSCALL
# undef __ASSUME_RECVMMSG_SYSCALL

1
sysdeps/unix/sysv/linux/microblaze/kernel-features.h
View File

@ -24,7 +24,6 @@
#define __ASSUME_BIND_SYSCALL 1
#define __ASSUME_CONNECT_SYSCALL 1
#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_ACCEPT_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SOCKETPAIR_SYSCALL 1

1
sysdeps/unix/sysv/linux/mips/syscalls.list
View File

@ -12,7 +12,6 @@ sysmips - sysmips i:iiii __sysmips sysmips
# Socket functions; Linux/MIPS doesn't use the socketcall(2) wrapper;
# it's provided for compatibility, though.
#
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername

1
sysdeps/unix/sysv/linux/powerpc/kernel-features.h
View File

@ -25,7 +25,6 @@
#define __ASSUME_BIND_SYSCALL 1
#define __ASSUME_CONNECT_SYSCALL 1
#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_ACCEPT_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SOCKETPAIR_SYSCALL 1

3
sysdeps/unix/sysv/linux/s390/kernel-features.h
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@ -27,7 +27,6 @@
# define __ASSUME_BIND_SYSCALL 1
# define __ASSUME_CONNECT_SYSCALL 1
# define __ASSUME_LISTEN_SYSCALL 1
# define __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL 1
# define __ASSUME_GETSOCKOPT_SYSCALL 1
# define __ASSUME_SETSOCKOPT_SYSCALL 1
# define __ASSUME_GETSOCKNAME_SYSCALL 1
@ -41,6 +40,8 @@
#include_next <kernel-features.h>
#undef __ASSUME_ACCEPT_SYSCALL
#if __LINUX_KERNEL_VERSION < 0x040300
# undef __ASSUME_ACCEPT4_SYSCALL
# undef __ASSUME_RECVMMSG_SYSCALL

1
sysdeps/unix/sysv/linux/sh/kernel-features.h
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@ -28,7 +28,6 @@
#define __ASSUME_BIND_SYSCALL 1
#define __ASSUME_CONNECT_SYSCALL 1
#define __ASSUME_LISTEN_SYSCALL 1
#define __ASSUME_ACCEPT_SYSCALL 1
#define __ASSUME_GETSOCKNAME_SYSCALL 1
#define __ASSUME_GETPEERNAME_SYSCALL 1
#define __ASSUME_SOCKETPAIR_SYSCALL 1

4
sysdeps/unix/sysv/linux/sparc/kernel-features.h
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@ -38,5 +38,9 @@
# undef __ASSUME_SET_ROBUST_LIST
#endif
#if !defined __arch64__
# undef __ASSUME_ACCEPT_SYSCALL
#endif
/* sparc only supports ipc syscall. */
#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS

1
sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list
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@ -2,7 +2,6 @@
# Override select.S in parent directory:
select - select C:5 __select select
accept - accept C:3 __libc_accept __accept accept
bind - bind 3 __bind bind
connect - connect C:3 __libc_connect __connect connect
getpeername - getpeername 3 __getpeername getpeername

1
sysdeps/unix/sysv/linux/x86_64/syscalls.list
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@ -10,7 +10,6 @@ syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
bind - bind i:ipi __bind bind
connect - connect Ci:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername