ARM: 6329/1: wire up sys_accept4() on ARM
authorMikael Pettersson <mikpe@it.uu.se>
Sun, 15 Aug 2010 09:47:23 +0000 (10:47 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 15 Aug 2010 21:04:23 +0000 (22:04 +0100)
sys_accept4() was added in kernel 2.6.28, but ARM was not updated
to include it.  The number and types of parameters is such that
no ARM-specific processing is needed, so wiring up sys_accept4()
just requires defining __NR_accept4 and adding a direct call in
the syscall entry table.

Tested with an EABI 2.6.35 kernel and Ulrich Drepper's original
accept4() test program, modified to define __NR_accept4 for ARM.

Using the updated unistd.h also eliminates a warning then building
glibc (2.10.2 and newer) about accept4() being unimplemented.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/include/asm/unistd.h
arch/arm/kernel/calls.S

index dd2bf53..d02cfb6 100644 (file)
 #define __NR_rt_tgsigqueueinfo         (__NR_SYSCALL_BASE+363)
 #define __NR_perf_event_open           (__NR_SYSCALL_BASE+364)
 #define __NR_recvmmsg                  (__NR_SYSCALL_BASE+365)
+#define __NR_accept4                   (__NR_SYSCALL_BASE+366)
 
 /*
  * The following SWIs are ARM private.
index 37ae301..afeb71f 100644 (file)
                CALL(sys_rt_tgsigqueueinfo)
                CALL(sys_perf_event_open)
 /* 365 */      CALL(sys_recvmmsg)
+               CALL(sys_accept4)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted