From 8ccf22f93431a2f8c77de708cd3b15325c8fe0f4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 25 Jul 2008 17:06:50 +0000 Subject: * include/rpc/clnt.h: Declare __libc_clntudp_bufcreate and __libc_clntudp_bufcreate_internal. * include/sys/socket.h: Declare __have_sock_cloexec. * socket/Makefile (aux): Add have_sock_cloexec. * socket/have_sock_cloexec.c: New file. * sunrpc/clnt_udp.h (clntudp_bufcreate): Now a wrapper around __libc_clntudp_bufcreate. (__libc_clntudp_bufcreate): Former implementation of clntudp_bufcreate which takes an additional parameter. Create socket with non-blocking mode and close-on-exec flag set, if wanted. * sunrpc/Versions: Export __libc_clntudp_bufcreate@GLIBC_PRIVATE. * nis/ypclnt.c (yp_bind_client_create): Use __libc_clntpudp_bufcreate instead of clntudp_create. The socket has already the close-on-exec flag set if SOCK_CLOEXEC is defined. --- nptl/sysdeps/unix/sysv/linux/mq_notify.c | 29 ++++++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-) (limited to 'nptl/sysdeps') diff --git a/nptl/sysdeps/unix/sysv/linux/mq_notify.c b/nptl/sysdeps/unix/sysv/linux/mq_notify.c index 2ec11bf686..1be452a0e0 100644 --- a/nptl/sysdeps/unix/sysv/linux/mq_notify.c +++ b/nptl/sysdeps/unix/sysv/linux/mq_notify.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2004, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2004, 2005, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. Contribute by Ulrich Drepper , 2004. @@ -29,6 +29,7 @@ #include #include #include +#include #ifdef __NR_mq_notify @@ -152,18 +153,40 @@ reset_once (void) static void init_mq_netlink (void) { +#ifdef SOCK_CLOEXEC +# ifndef __ASSUME_SOCK_CLOEXEC + static int have_sock_cloexec; +# else +# define have_sock_cloexec 1 +# endif +#else +# define have_sock_cloexec -1 +# define SOCK_CLOEXEC 0 +#endif + /* This code might be called a second time after fork(). The file descriptor is inherited from the parent. */ if (netlink_socket == -1) { /* Just a normal netlink socket, not bound. */ - netlink_socket = socket (AF_NETLINK, SOCK_RAW, 0); + if (have_sock_cloexec) + { + netlink_socket = socket (AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, 0); +#if defined SOCK_CLOEXEC && !defined __ASSUME_SOCK_CLOEXEC + if (have_sock_cloexec == 0) + have_sock_cloexec = (netlink_socket != -1 || errno != EINVAL + ? 1 : -1); +#endif + } + if (have_sock_cloexec < 0) + netlink_socket = socket (AF_NETLINK, SOCK_RAW, 0); /* No need to do more if we have no socket. */ if (netlink_socket == -1) return; /* Make sure the descriptor is closed on exec. */ - if (fcntl (netlink_socket, F_SETFD, FD_CLOEXEC) != 0) + if (have_sock_cloexec < 0 + && fcntl (netlink_socket, F_SETFD, FD_CLOEXEC) != 0) goto errout; } -- cgit v1.2.3-70-g09d2