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[PATCH] x86: Wire up 32-bit direct socket calls
- From: Andy Lutomirski <luto at kernel dot org>
- To: X86 ML <x86 at kernel dot org>, Network Development <netdev at vger dot kernel dot org>
- Cc: Tulio Magno Quites Machado Filho <tuliom at linux dot vnet dot ibm dot com>, Andy Lutomirski <luto at amacapital dot net>, "linux-kernel at vger dot kernel dot org" <linux-kernel at vger dot kernel dot org>, Alexander Larsson <alexl at redhat dot com>, Cosimo Cecchi <cosimo at endlessm dot com>, Dan Nicholson <nicholson at endlessm dot com>, libc-alpha <libc-alpha at sourceware dot org>, Rajalakshmi Srinivasaraghavan <raji at linux dot vnet dot ibm dot com>, Andy Lutomirski <luto at kernel dot org>
- Date: Tue, 14 Jul 2015 15:24:24 -0700
- Subject: [PATCH] x86: Wire up 32-bit direct socket calls
- Authentication-results: sourceware.org; auth=none
On x86_64, there's no socketcall syscall; instead all of the socket
calls are real syscalls. For 32-bit programs, we're stuck offering
the socketcall syscall, but it would be nice to expose the direct
calls as well. This will enable seccomp to filter socket calls (for
new userspace only, but that's fine for some applications) and it
will provide a tiny performance boost.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
arch/x86/entry/syscalls/syscall_32.tbl | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index ef8187f9d28d..25e3cf1cd8fd 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -365,3 +365,18 @@
356 i386 memfd_create sys_memfd_create
357 i386 bpf sys_bpf
358 i386 execveat sys_execveat stub32_execveat
+359 i386 socket sys_socket
+360 i386 socketpair sys_socketpair
+361 i386 bind sys_bind
+362 i386 connect sys_connect
+363 i386 listen sys_listen
+364 i386 accept4 sys_accept4
+365 i386 getsockopt sys_getsockopt compat_sys_getsockopt
+366 i386 setsockopt sys_setsockopt compat_sys_setsockopt
+367 i386 getsockname sys_getsockname
+368 i386 getpeername sys_getpeername
+369 i386 sendto sys_sendto
+370 i386 sendmsg sys_sendmsg compat_sys_sendmsg
+371 i386 recvfrom sys_recvfrom compat_sys_recvfrom
+372 i386 recvmsg sys_recvmsg compat_sys_recvmsg
+373 i386 shutdown sys_shutdown
--
2.4.3