newlib-cygwin/newlib/libc/sys/linux/net/opensock.c

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2008-05-22 Jeff Johnston <jjohnstn@redhat.com> * libc/include/sys/reent.h: Add _h_errno field. * libc/sys/linux/libc-symbols.h: Add default stubs for new libc macros now used in net directory. * libc/sys/linux/bits/libc-lock.h: Always define _IO_MTSAFE_IO. * libc/sys/linux/include/hesiod.h: Add needed macros for new code in net directory. * libc/sys/linux/include/netdb.h: Ditto. * libc/sys/linux/include/resolv.h: Ditto. * libc/sys/linux/include/stdint.h: Ditto. * libc/sys/linux/include/arpa/nameser.h: Ditto. * libc/sys/linux/include/net/ethernet.h: Ditto. * libc/sys/linux/include/net/if_ppp.h: Ditto. * libc/sys/linux/include/netinet/if_ether.h: Ditto. * libc/sys/linux/machine/i386/get_clockfreq.c: Remove static memmem. * libc/sys/linux/machine/i386/include/endian.h: Protect macros with flags to avoid duplicate definition. * libc/sys/linux/machine/i386/include/param.h: Ditto. * libc/sys/linux/net/Makefile.am: Modified to account for removed and added files. * libc/sys/linux/net/Makefile.in: Regenerated. * libc/sys/linux/net/base64.c: Replaced with glibc version of code. * libc/sys/linux/net/getaddrinfo.c: Ditto. * libc/sys/linux/net/getnameinfo.c: Ditto. * libc/sys/linux/net/getproto.c: Ditto. * libc/sys/linux/net/getservent.c: Ditto. * libc/sys/linux/net/inet_netof.c: Ditto. * libc/sys/linux/net/inet_lnaof.c: Ditto. * libc/sys/linux/net/ns_name.c: Ditto. * libc/sys/linux/net/ns_netint.c: Ditto. * libc/sys/linux/net/inet_ntoa.c: Ditto. * libc/sys/linux/net/ns_parse.c: Ditto. * libc/sys/linux/net/ns_print.c: Ditto. * libc/sys/linux/net/ns_ttl.c: Ditto. * libc/sys/linux/net/nsap_addr.c: Ditto. * libc/sys/linux/net/rcmd.c: Ditto. * libc/sys/linux/net/res_comp.c: Ditto. * libc/sys/linux/net/res_data.c: Ditto. * libc/sys/linux/net/res_debug.c: Ditto. * libc/sys/linux/net/res_init.c: Ditto. * libc/sys/linux/net/res_mkquery.c: Ditto. * libc/sys/linux/net/res_query.c: Ditto. * libc/sys/linux/net/res_send.c: Ditto. * libc/sys/linux/net/send.c: Ditto. * libc/sys/linux/stdlib/collate.c: Ditto. * libc/sys/linux/sys/ioctl.h: Ditto. * libc/sys/linux/sys/socket.h: Ditto. * libc/sys/linux/sys/unistd.h: Ditto. * libc/sys/linux/iconv/iconvconfig.c: Removed either because no longer used or because licensing includes advertising clause that cannot be ignored. * libc/sys/linux/iconv/strtab.c: Ditto. * libc/sys/linux/include/libc_private.h: Ditto. * libc/sys/linux/include/nsswitch.h: Ditto. * libc/sys/linux/include/net/if_atm.h: Ditto. * libc/sys/linux/include/net/if_media.h: Ditto. * libc/sys/linux/include/net/if_pppvar.h: Ditto. * libc/sys/linux/include/netinet/if_atm.h: Ditto. * libc/sys/linux/include/netinet/ip_flow.h: Ditto. * libc/sys/linux/intl/locale.alias: Ditto. * libc/sys/linux/net/addr2ascii.3: Ditto. * libc/sys/linux/net/bindresvport.c: Ditto. * libc/sys/linux/net/byteorder.3: Ditto. * libc/sys/linux/net/res_config.h: Ditto. * libc/sys/linux/net/ether_addr.c: Ditto. * libc/sys/linux/net/ethers.3: Ditto. * libc/sys/linux/net/getaddrinfo.3: Ditto. * libc/sys/linux/net/gethostbydns.c: Ditto. * libc/sys/linux/net/gethostbyht.c: Ditto. * libc/sys/linux/net/gethostbyname.3: Ditto. * libc/sys/linux/net/gethostbynis.c: Ditto. * libc/sys/linux/net/gethostnamadr.c: Ditto. * libc/sys/linux/net/getifaddrs.3: Ditto. * libc/sys/linux/net/getifaddrs.c: Ditto. * libc/sys/linux/net/getipnodebyname.3: Ditto. * libc/sys/linux/net/getnameinfo.3: Ditto. * libc/sys/linux/net/getnetbydns.c: Ditto. * libc/sys/linux/net/getnetbyht.c: Ditto. * libc/sys/linux/net/getnetbynis.c: Ditto. * libc/sys/linux/net/getnetent.3: Ditto. * libc/sys/linux/net/getnetnamadr.c: Ditto. * libc/sys/linux/net/getprotoent.3: Ditto. * libc/sys/linux/net/getprotoent.c: Ditto. * libc/sys/linux/net/getprotoname.c: Ditto. * libc/sys/linux/net/getservbyname.c: Ditto. * libc/sys/linux/net/getservbyport.c: Ditto. * libc/sys/linux/net/getservent.3: Ditto. * libc/sys/linux/net/herror.c: Ditto. * libc/sys/linux/net/hesiod.3: Ditto. * libc/sys/linux/net/hesiod.c: Ditto. * libc/sys/linux/net/if_indextoname.3: Ditto. * libc/sys/linux/net/inet.3: Ditto. * libc/sys/linux/net/inet6_option_space.3: Ditto. * libc/sys/linux/net/inet6_rthdr_space.3: Ditto. * libc/sys/linux/net/inet_makeaddr.c: Ditto. * libc/sys/linux/net/inet_net.3: Ditto. * libc/sys/linux/net/inet_network.c: Ditto. * libc/sys/linux/net/innetgr-stub.c: Ditto. * libc/sys/linux/net/ip6opt.c: Ditto. * libc/sys/linux/net/iso_addr.3: Ditto. * libc/sys/linux/net/iso_addr.c: Ditto. * libc/sys/linux/net/linkaddr.3: Ditto. * libc/sys/linux/net/linkaddr.c: Ditto. * libc/sys/linux/net/map_v4v6.c: Ditto. * libc/sys/linux/net/name6.c: Ditto. * libc/sys/linux/net/namespace.h: Ditto. * libc/sys/linux/net/ns.3: Ditto. * libc/sys/linux/net/ns_addr.c: Ditto. * libc/sys/linux/net/ns_ntoa.c: Ditto. * libc/sys/linux/net/nsdispatch.3: Ditto. * libc/sys/linux/net/nsdispatch.c: Ditto. * libc/sys/linux/net/nslexer.c: Ditto. * libc/sys/linux/net/nslexer.l: Ditto. * libc/sys/linux/net/nsparser.c: Ditto. * libc/sys/linux/net/nsparser.h: Ditto. * libc/sys/linux/net/nsparser.y: Ditto. * libc/sys/linux/net/rcmd.3: Ditto. * libc/sys/linux/net/rcmdsh.3: Ditto. * libc/sys/linux/net/res_mkupdate.c: Ditto. * libc/sys/linux/net/res_update.c: Ditto. * libc/sys/linux/net/resolver.3: Ditto. * libc/sys/linux/net/rthdr.c: Ditto. * libc/sys/linux/net/vars.c: Ditto. * libc/sys/linux/shlib-compat.h: New file. * libc/sys/linux/machine/i386/atomic.h: Ditto. * libc/sys/linux/net/XXX-lookup.c: Ditto. * libc/sys/linux/net/alias-lookup.c: Ditto. * libc/sys/linux/net/res_libc.c: Ditto. * libc/sys/linux/net/aliases.h: Ditto. * libc/sys/linux/net/check_pf.c: Ditto. * libc/sys/linux/net/databases.def: Ditto. * libc/sys/linux/net/digits_dots.c: Ditto. * libc/sys/linux/net/ether_aton.c: Ditto. * libc/sys/linux/net/ether_aton_r.c: Ditto. * libc/sys/linux/net/ether_hton.c: Ditto. * libc/sys/linux/net/ether_line.c: Ditto. * libc/sys/linux/net/ether_ntoa.c: Ditto. * libc/sys/linux/net/ether_ntoa_r.c: Ditto. * libc/sys/linux/net/ether_ntoh.c: Ditto. * libc/sys/linux/net/etherent.h: Ditto. * libc/sys/linux/net/ethers-lookup.c: Ditto. * libc/sys/linux/net/function.def: Ditto. * libc/sys/linux/net/getXXbyYY.c: Ditto. * libc/sys/linux/net/getXXbyYY_r.c: Ditto. * libc/sys/linux/net/getXXent.c: Ditto. * libc/sys/linux/net/getXXent_r.c: Ditto. * libc/sys/linux/net/getaliasent.c: Ditto. * libc/sys/linux/net/getaliasent_r.c: Ditto. * libc/sys/linux/net/getaliasname.c: Ditto. * libc/sys/linux/net/getaliasname_r.c: Ditto. * libc/sys/linux/net/gethstbyad.c: Ditto. * libc/sys/linux/net/gethstbyad_r.c: Ditto. * libc/sys/linux/net/gethstbynm.c: Ditto. * libc/sys/linux/net/gethstbynm2.c: Ditto. * libc/sys/linux/net/gethstbynm2_r.c: Ditto. * libc/sys/linux/net/gethstbynm_r.c: Ditto. * libc/sys/linux/net/gethstent.c: Ditto. * libc/sys/linux/net/gethstent_r.c: Ditto. * libc/sys/linux/net/getnetbyad.c: Ditto. * libc/sys/linux/net/getnetbyad_r.c: Ditto. * libc/sys/linux/net/getnetbynm.c: Ditto. * libc/sys/linux/net/getnetbynm_r.c: Ditto. * libc/sys/linux/net/getnetent.c: Ditto. * libc/sys/linux/net/getnetent_r.c: Ditto. * libc/sys/linux/net/getnetgrent.c: Ditto. * libc/sys/linux/net/getnetgrent_r.c: Ditto. * libc/sys/linux/net/getnssent.c: Ditto. * libc/sys/linux/net/getnssent_r.c: Ditto. * libc/sys/linux/net/getproto_r.c: Ditto. * libc/sys/linux/net/getprtent.c: Ditto. * libc/sys/linux/net/getprtent_r.c: Ditto. * libc/sys/linux/net/getprtname.c: Ditto. * libc/sys/linux/net/getprtname_r.c: Ditto. * libc/sys/linux/net/getrpcbyname.c: Ditto. * libc/sys/linux/net/getrpcbyname_r.c: Ditto. * libc/sys/linux/net/getrpcbynumber.c: Ditto. * libc/sys/linux/net/getrpcbynumber_r.c: Ditto. * libc/sys/linux/net/getrpcent.c: Ditto. * libc/sys/linux/net/getrpcent_r.c: Ditto. * libc/sys/linux/net/getservent_r.c: Ditto. * libc/sys/linux/net/getsrvbynm.c: Ditto. * libc/sys/linux/net/getsrvbynm_r.c: Ditto. * libc/sys/linux/net/getsrvbypt.c: Ditto. * libc/sys/linux/net/getsrvbypt_r.c: Ditto. * libc/sys/linux/net/grp-lookup.c: Ditto. * libc/sys/linux/net/herrno.c: Ditto. * libc/sys/linux/net/hosts-lookup.c: Ditto. * libc/sys/linux/net/ifaddrs.h: Ditto. * libc/sys/linux/net/ifreq.c: Ditto. * libc/sys/linux/net/ifreq.h: Ditto. * libc/sys/linux/net/in6_addr.c: Ditto. * libc/sys/linux/net/inet6_option.c: Ditto. * libc/sys/linux/net/inet_mkadr.c: Ditto. * libc/sys/linux/net/inet_net.c: Ditto. * libc/sys/linux/net/key-lookup.c: Ditto. * libc/sys/linux/net/local.h: Ditto. * libc/sys/linux/net/netgroup.h: Ditto. * libc/sys/linux/net/netgrp-lookup.c: Ditto. * libc/sys/linux/net/network-lookup.c: Ditto. * libc/sys/linux/net/not-cancel.h: Ditto. * libc/sys/linux/net/ns_samedomain.c: Ditto. * libc/sys/linux/net/nscd-types.h: Ditto. * libc/sys/linux/net/nss.h: Ditto. * libc/sys/linux/net/nsswitch.c: Ditto. * libc/sys/linux/net/nsswitch.h: Ditto. * libc/sys/linux/net/opensock.c: Ditto. * libc/sys/linux/net/proto-lookup.c: Ditto. * libc/sys/linux/net/pwd-lookup.c: Ditto. * libc/sys/linux/net/res_debug.h: Ditto. * libc/sys/linux/net/res_hconf.c: Ditto. * libc/sys/linux/net/res_hconf.h: Ditto. * libc/sys/linux/net/rexec.c: Ditto. * libc/sys/linux/net/rpc-lookup.c: Ditto. * libc/sys/linux/net/ruserpass.c: Ditto. * libc/sys/linux/net/service-lookup.c: Ditto. * libc/sys/linux/net/spwd-lookup.c: Ditto. * libc/sys/linux/net/nscd/nscd-client.h: Ditto. * libc/sys/linux/net/nscd/nscd_proto.h: Ditto.
2008-05-23 05:30:28 +08:00
/* Copyright (C) 1999, 2001, 2002 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 <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include "libc-symbols.h"
/* Return a socket of any type. The socket can be used in subsequent
ioctl calls to talk to the kernel. */
int internal_function
__opensock (void)
{
static int last_family; /* Available socket family we will use. */
static int last_type;
static const struct
{
int family;
const char procname[15];
} afs[] =
{
/* The 2.2 kernels cannot handle ioctl(SIOCGIFCONF) on AF_UNIX sockets.
Give the kernel a chance to user inet sockets on old kernels. */
#if __LINUX_KERNEL_VERSION < 132096
{ AF_INET, "" },
{ AF_UNIX, "net/unix" },
#else
{ AF_UNIX, "net/unix" },
{ AF_INET, "" },
#endif
{ AF_INET6, "net/if_inet6" },
{ AF_AX25, "net/ax25" },
{ AF_NETROM, "net/nr" },
{ AF_ROSE, "net/rose" },
{ AF_IPX, "net/ipx" },
{ AF_APPLETALK, "net/appletalk" },
{ AF_ECONET, "sys/net/econet" },
{ AF_ASH, "sys/net/ash" },
{ AF_X25, "net/x25" }
};
#define nafs (sizeof (afs) / sizeof (afs[0]))
char fname[sizeof "/proc/" + 14];
int result;
int has_proc;
size_t cnt;
/* We already know which family to use from the last call. Use it
again. */
if (last_family != 0)
{
assert (last_type != 0);
result = socket (last_family, last_type, 0);
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. */
return result;
/* Reset the values. They seem not valid anymore. */
last_family = 0;
last_type = 0;
}
/* Check whether the /proc filesystem is available. */
has_proc = access ("/proc/net", R_OK) != -1;
strcpy (fname, "/proc/");
/* Iterate over the interface families and find one which is
available. */
for (cnt = 0; cnt < nafs; ++cnt)
{
int type = SOCK_DGRAM;
if (has_proc && afs[cnt].procname[0] != '\0')
{
strcpy (fname + 6, afs[cnt].procname);
if (access (fname, R_OK) == -1)
/* The /proc entry is not available. I.e., we cannot
create a socket of this type (without loading the
module). Don't look for it since this might trigger
loading the module. */
continue;
}
if (afs[cnt].family == AF_NETROM || afs[cnt].family == AF_X25)
type = SOCK_SEQPACKET;
result = socket (afs[cnt].family, type, 0);
if (result != -1)
{
/* Found an available family. */
last_type = type;
last_family = afs[cnt].family;
return result;
}
}
/* None of the protocol families is available. It is unclear what kind
of error is returned. ENOENT seems like a reasonable choice. */
__set_errno (ENOENT);
return -1;
}