* 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.
This commit is contained in:
Ulrich Drepper 2008-07-25 17:06:50 +00:00
parent 3ff2c948be
commit 8ccf22f934
10 changed files with 169 additions and 16 deletions

View File

@ -1,3 +1,20 @@
2008-07-25 Ulrich Drepper <drepper@redhat.com>
* 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.
2008-07-24 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/kernel-features.h: Define

View File

@ -21,6 +21,18 @@ extern CLIENT *clntudp_bufcreate_internal (struct sockaddr_in *__raddr,
struct timeval __wait_resend,
int *__sockp, u_int __sendsz,
u_int __recvsz) attribute_hidden;
extern CLIENT *__libc_clntudp_bufcreate (struct sockaddr_in *__raddr,
u_long __program, u_long __version,
struct timeval __wait_resend,
int *__sockp, u_int __sendsz,
u_int __recvsz, int __flags);
extern CLIENT *__libc_clntudp_bufcreate_internal (struct sockaddr_in *__raddr,
u_long __program,
u_long __version,
struct timeval __wait_resend,
int *__sockp, u_int __sendsz,
u_int __recvsz, int __flags)
attribute_hidden;
extern CLIENT *clntunix_create_internal (struct sockaddr_un *__raddr,
u_long __program, u_long __version,
int *__sockp, u_int __sendsz,

View File

@ -153,4 +153,12 @@ extern int __libc_sa_len_internal (sa_family_t __af) attribute_hidden;
# define __connect(fd, addr, len) INTUSE(__connect) (fd, addr, len)
#endif
#ifdef SOCK_CLOEXEC
extern int __have_sock_cloexec;
/* At lot of other functionality became available at the same time as
SOCK_CLOEXEC. Avoid defining separate variables for all of them
unless it is really necessary. */
# define __have_paccept __have_sock_cloexec
#endif
#endif

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@ -1,4 +1,4 @@
/* Copyright (C) 1996-2001, 2002, 2003, 2004, 2005, 2006
/* Copyright (C) 1996-2001, 2002, 2003, 2004, 2005, 2006, 2008
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
@ -28,6 +28,7 @@
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <rpcsvc/ypupd.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <bits/libc-lock.h>
@ -69,14 +70,24 @@ yp_bind_client_create (const char *domain, dom_binding *ysd,
ysd->dom_domain[YPMAXDOMAIN] = '\0';
ysd->dom_socket = RPC_ANYSOCK;
ysd->dom_client = clntudp_create (&ysd->dom_server_addr, YPPROG, YPVERS,
UDPTIMEOUT, &ysd->dom_socket);
#ifdef SOCK_CLOEXEC
# define xflags SOCK_CLOEXEC
#else
# define xflags 0
#endif
ysd->dom_client = __libc_clntudp_bufcreate (&ysd->dom_server_addr, YPPROG,
YPVERS, UDPTIMEOUT,
&ysd->dom_socket,
UDPMSGSIZE, UDPMSGSIZE,
xflags);
if (ysd->dom_client != NULL)
{
#ifndef SOCK_CLOEXEC
/* If the program exits, close the socket */
if (fcntl (ysd->dom_socket, F_SETFD, FD_CLOEXEC) == -1)
perror ("fcntl: F_SETFD");
#endif
}
}

View File

@ -1,3 +1,14 @@
2008-07-25 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/mq_notify.c (init_mq_netlink): Use
SOCK_CLOEXEC if possible.
2008-05-29 Ulrich Drepper <drepper@redhat.com>
* Makefile (tests): Add tst-rwlock2a.
* tst-rwlock2.c: Use TYPE macro to decide what rwlock type to use.
* tst-rwlock2a.c: New file.
2008-06-12 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/pthread.h: Remove inadvertant checkin.
@ -76,7 +87,7 @@
2008-03-27 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/bits/local_lim.h: Undefined ARG_MAX if
* sysdeps/unix/sysv/linux/bits/local_lim.h: Undefine ARG_MAX if
<linux/limits.h> has defined it.
* sysdeps/unix/sysv/linux/alpha/bits/local_lim.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/local_lim.h: Likewise.

View File

@ -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 <drepper@redhat.com>, 2004.
@ -29,6 +29,7 @@
#include <unistd.h>
#include <sys/socket.h>
#include <not-cancel.h>
#include <kernel-features.h>
#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;
}

View File

@ -29,6 +29,8 @@ routines := accept bind connect getpeername getsockname getsockopt \
setsockopt shutdown socket socketpair isfdtype opensock \
sockatmark paccept
aux := have_sock_cloexec
distribute := ifreq.h
include ../Rules

View File

@ -0,0 +1,24 @@
/* Copyright (C) 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sys/socket.h>
#include <kernel-features.h>
#if defined SOCK_CLOEXEC && !defined __ASSUME_SOCK_CLOEXEC
int __have_sock_cloexec;
#endif

View File

@ -116,4 +116,7 @@ libc {
GLIBC_2.3.4 {
xdr_quad_t; xdr_u_quad_t;
}
GLIBC_PRIVATE {
__libc_clntudp_bufcreate;
}
}

View File

@ -54,12 +54,15 @@ static char sccsid[] = "@(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";
#ifdef USE_IN_LIBIO
# include <wchar.h>
#endif
#include <fcntl.h>
#ifdef IP_RECVERR
#include <errqueue.h>
#include <sys/uio.h>
#endif
#include <kernel-features.h>
extern bool_t xdr_opaque_auth (XDR *, struct opaque_auth *);
extern u_long _create_xid (void);
@ -121,9 +124,9 @@ struct cu_data
* sent and received.
*/
CLIENT *
clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
struct timeval wait, int *sockp, u_int sendsz,
u_int recvsz)
__libc_clntudp_bufcreate (struct sockaddr_in *raddr, u_long program,
u_long version, struct timeval wait, int *sockp,
u_int sendsz, u_int recvsz, int flags)
{
CLIENT *cl;
struct cu_data *cu = NULL;
@ -178,8 +181,32 @@ clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
{
int dontblock = 1;
*sockp = __socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (*sockp < 0)
#ifdef SOCK_NONBLOCK
# ifndef __ASSUME_SOCK_CLOEXEC
if (__have_sock_cloexec >= 0)
# endif
{
*sockp = __socket (AF_INET, SOCK_DGRAM|SOCK_NONBLOCK|flags,
IPPROTO_UDP);
# ifndef __ASSUME_SOCK_CLOEXEC
if (__have_sock_cloexec == 0)
__have_sock_cloexec = *sockp >= 0 || errno != EINVAL ? 1 : -1;
# endif
}
#endif
#ifndef __ASSUME_SOCK_CLOEXEC
# ifdef SOCK_CLOEXEC
if (__have_sock_cloexec < 0)
# endif
{
*sockp = __socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
# ifdef SOCK_CLOEXEC
if (flags & SOCK_CLOEXEC)
fcntl (*sockp, F_SETFD, FD_CLOEXEC);
# endif
}
#endif
if (__builtin_expect (*sockp < 0, 0))
{
struct rpc_createerr *ce = &get_rpc_createerr ();
ce->cf_stat = RPC_SYSTEMERROR;
@ -188,8 +215,13 @@ clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
}
/* attempt to bind to prov port */
(void) bindresvport (*sockp, (struct sockaddr_in *) 0);
/* the sockets rpc controls are non-blocking */
(void) __ioctl (*sockp, FIONBIO, (char *) &dontblock);
#ifndef __ASSUME_SOCK_CLOEXEC
# ifdef SOCK_CLOEXEC
if (__have_sock_cloexec < 0)
# endif
/* the sockets rpc controls are non-blocking */
(void) __ioctl (*sockp, FIONBIO, (char *) &dontblock);
#endif
#ifdef IP_RECVERR
{
int on = 1;
@ -212,6 +244,16 @@ fooy:
mem_free ((caddr_t) cl, sizeof (CLIENT));
return (CLIENT *) NULL;
}
INTDEF (__libc_clntudp_bufcreate)
CLIENT *
clntudp_bufcreate (struct sockaddr_in *raddr, u_long program, u_long version,
struct timeval wait, int *sockp, u_int sendsz,
u_int recvsz)
{
return INTUSE(__libc_clntudp_bufcreate) (raddr, program, version, wait,
sockp, sendsz, recvsz, 0);
}
INTDEF (clntudp_bufcreate)
CLIENT *
@ -222,8 +264,8 @@ clntudp_create (raddr, program, version, wait, sockp)
struct timeval wait;
int *sockp;
{
return INTUSE(clntudp_bufcreate) (raddr, program, version, wait, sockp,
UDPMSGSIZE, UDPMSGSIZE);
return INTUSE(__libc_clntudp_bufcreate) (raddr, program, version, wait,
sockp, UDPMSGSIZE, UDPMSGSIZE, 0);
}
INTDEF (clntudp_create)