Unlock bind(2) syscall.

For internet sockets sobind() runs with exclusive net lock due to
solock().  For unix domain sockets uipc_bind() grabs the kernel
lock itself.  So sys_bind() is MP safe.  Add NOLOCK flag to avoid
kernel lock.

OK mvs@

diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master
index 2ed3185..5c60c38 100644 (file)
--- a/sys/kern/syscalls.master
+++ b/sys/kern/syscalls.master
@@ -1,4 +1,4 @@
-;      $OpenBSD: syscalls.master,v 1.250 2023/08/20 15:13:43 visa Exp $
+;      $OpenBSD: syscalls.master,v 1.251 2023/11/29 20:40:06 bluhm Exp $
 ;      $NetBSD: syscalls.master,v 1.32 1996/04/23 10:24:21 mycroft Exp $
 
 ;      @(#)syscalls.master     8.2 (Berkeley) 1/13/94
@@ -221,7 +221,7 @@
 101    STD NOLOCK      { int sys_pipe2(int *fdp, int flags); }
 102    STD NOLOCK      { int sys_dup3(int from, int to, int flags); }
 103    STD             { int sys_sigreturn(struct sigcontext *sigcntxp); }
-104    STD             { int sys_bind(int s, const struct sockaddr *name, \
+104    STD NOLOCK      { int sys_bind(int s, const struct sockaddr *name, \
                            socklen_t namelen); }
 105    STD NOLOCK      { int sys_setsockopt(int s, int level, int name, \
                            const void *val, socklen_t valsize); }