diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/opensock.c | 41 |
2 files changed, 41 insertions, 3 deletions
@@ -1,5 +1,8 @@ 2008-07-25 Ulrich Drepper <drepper@redhat.com> + * sysdeps/unix/sysv/linux/opensock.c (__opensock): Use + SOCK_CLOEXEC if available. + * include/rpc/clnt.h: Declare __libc_clntudp_bufcreate and __libc_clntudp_bufcreate_internal. * include/sys/socket.h: Declare __have_sock_cloexec. diff --git a/sysdeps/unix/sysv/linux/opensock.c b/sysdeps/unix/sysv/linux/opensock.c index 95559eb799..191d72011d 100644 --- a/sysdeps/unix/sysv/linux/opensock.c +++ b/sysdeps/unix/sysv/linux/opensock.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999, 2001, 2002, 2007 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -22,6 +22,7 @@ #include <string.h> #include <unistd.h> #include <sys/socket.h> +#include <kernel-features.h> /* Return a socket of any type. The socket can be used in subsequent ioctl calls to talk to the kernel. */ @@ -70,7 +71,24 @@ __opensock (void) { assert (last_type != 0); - result = __socket (last_family, last_type, 0); +#ifdef SOCK_CLOEXEC +# ifndef __ASSUME_SOCK_CLOEXEC + if (__have_sock_cloexec >= 0) +# endif + { + result = __socket (last_family, last_type | SOCK_CLOEXEC, 0); +# ifndef __ASSUME_SOCK_CLOEXEC + if (__have_sock_cloexec == 0) + __have_sock_cloexec = result != -1 || errno != EINVAL ? 1 : -1; +# endif + } +#endif +#ifndef __ASSUME_SOCK_CLOEXEC +# ifdef SOCK_CLOEXEC + if (__have_sock_cloexec < 0) +# endif + result = __socket (last_family, last_type, 0); +#endif if (result != -1 || errno != EAFNOSUPPORT) /* Maybe the socket type isn't supported anymore (module is unloaded). In this case again try to find the type. */ @@ -105,7 +123,24 @@ __opensock (void) if (afs[cnt].family == AF_NETROM || afs[cnt].family == AF_X25) type = SOCK_SEQPACKET; - result = __socket (afs[cnt].family, type, 0); +#ifdef SOCK_CLOEXEC +# ifndef __ASSUME_SOCK_CLOEXEC + if (__have_sock_cloexec >= 0) +# endif + { + result = __socket (afs[cnt].family, type | SOCK_CLOEXEC, 0); +# ifndef __ASSUME_SOCK_CLOEXEC + if (__have_sock_cloexec == 0) + __have_sock_cloexec = result != -1 || errno != EINVAL ? 1 : -1; +# endif + } +#endif +#ifndef __ASSUME_SOCK_CLOEXEC +# ifdef SOCK_CLOEXEC + if (__have_sock_cloexec < 0) +# endif + result = __socket (afs[cnt].family, type, 0); +#endif if (result != -1) { /* Found an available family. */ |