/recipes/glibc/glibc-2.6.1/glibc-check_pf.patch
Patch | 343 lines | 335 code | 8 blank | 0 comment | 0 complexity | e497df65a067e5f744ffec7eafa679c4 MD5 | raw file
- From libc-ports-return-550-listarch-libc-ports=sources dot redhat dot com at sourceware dot org Tue Oct 31 17:37:21 2006
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- Date: Tue, 31 Oct 2006 12:37:08 -0500
- From: Daniel Jacobowitz <drow at false dot org>
- To: Mike Frysinger <vapier at gentoo dot org>
- Cc: libc-ports at sourceware dot org, Philip Balister <philip dot balister at gmail dot com>
- Subject: Re: Problem with glibc-2.5 on ARM
- Message-ID: <20061031173708.GJ20468@nevyn.them.org>
- References: <499146270610241149ibe030e0nd9d6b177a95b346e@mail.gmail.com> <499146270610241254u7cadf63ej2edf05cedbc5266f@mail.gmail.com> <20061024195837.GA20181@nevyn.them.org> <200610291954.27022.vapier@gentoo.org>
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- On Sun, Oct 29, 2006 at 07:54:25PM -0500, Mike Frysinger wrote:
- > On Tuesday 24 October 2006 15:58, Daniel Jacobowitz wrote:
- > > ARM is going to need a slightly different version of that file, I
- > > guess.
- >
- > would declaring req with attribute packed not help ?
- > -mike
- Nope. "struct rtgenmsg" would still have size 4.
- Philip, are you still at all interested in this for the old ABI?
- I don't have time to test this patch right now, but I think it
- will work.
- --
- Daniel Jacobowitz
- CodeSourcery
- 2006-10-31 Daniel Jacobowitz <dan@codesourcery.com>
- * sysdeps/unix/sysv/linux/arm/check_pf.c: New file.
- * sysdeps/unix/sysv/linux/arm/eabi/check_pf.c: New file.
- Index: sysdeps/unix/sysv/linux/arm/check_pf.c
- ===================================================================
- RCS file: sysdeps/unix/sysv/linux/arm/check_pf.c
- diff -N sysdeps/unix/sysv/linux/arm/check_pf.c
- --- /dev/null 1 Jan 1970 00:00:00 -0000
- +++ sysdeps/unix/sysv/linux/arm/check_pf.c 31 Oct 2006 17:29:58 -0000
- @@ -0,0 +1,274 @@
- +/* Determine protocol families for which interfaces exist. ARM Linux version.
- + Copyright (C) 2003, 2006 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 <ifaddrs.h>
- +#include <netdb.h>
- +#include <stddef.h>
- +#include <string.h>
- +#include <time.h>
- +#include <unistd.h>
- +#include <sys/socket.h>
- +
- +#include <asm/types.h>
- +#include <linux/netlink.h>
- +#include <linux/rtnetlink.h>
- +
- +#include <not-cancel.h>
- +#include <kernel-features.h>
- +
- +
- +#ifndef IFA_F_TEMPORARY
- +# define IFA_F_TEMPORARY IFA_F_SECONDARY
- +#endif
- +#ifndef IFA_F_HOMEADDRESS
- +# define IFA_F_HOMEADDRESS 0
- +#endif
- +
- +
- +static int
- +make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
- + struct in6addrinfo **in6ai, size_t *in6ailen)
- +{
- + struct req
- + {
- + struct nlmsghdr nlh;
- + struct rtgenmsg g;
- + } req;
- + struct sockaddr_nl nladdr;
- +
- + /* struct rtgenmsg consists of a single byte but the ARM ABI rounds
- + it up to a word. Clear the padding explicitly here. */
- + assert (sizeof (req.g) == 4);
- + memset (&req.g, '\0', sizeof (req.g));
- +
- + req.nlh.nlmsg_len = sizeof (req);
- + req.nlh.nlmsg_type = RTM_GETADDR;
- + req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
- + req.nlh.nlmsg_pid = 0;
- + req.nlh.nlmsg_seq = time (NULL);
- + req.g.rtgen_family = AF_UNSPEC;
- +
- + memset (&nladdr, '\0', sizeof (nladdr));
- + nladdr.nl_family = AF_NETLINK;
- +
- + if (TEMP_FAILURE_RETRY (__sendto (fd, (void *) &req, sizeof (req), 0,
- + (struct sockaddr *) &nladdr,
- + sizeof (nladdr))) < 0)
- + return -1;
- +
- + *seen_ipv4 = false;
- + *seen_ipv6 = false;
- +
- + bool done = false;
- + char buf[4096];
- + struct iovec iov = { buf, sizeof (buf) };
- + struct in6ailist
- + {
- + struct in6addrinfo info;
- + struct in6ailist *next;
- + } *in6ailist = NULL;
- + size_t in6ailistlen = 0;
- +
- + do
- + {
- + struct msghdr msg =
- + {
- + (void *) &nladdr, sizeof (nladdr),
- + &iov, 1,
- + NULL, 0,
- + 0
- + };
- +
- + ssize_t read_len = TEMP_FAILURE_RETRY (__recvmsg (fd, &msg, 0));
- + if (read_len < 0)
- + return -1;
- +
- + if (msg.msg_flags & MSG_TRUNC)
- + return -1;
- +
- + struct nlmsghdr *nlmh;
- + for (nlmh = (struct nlmsghdr *) buf;
- + NLMSG_OK (nlmh, (size_t) read_len);
- + nlmh = (struct nlmsghdr *) NLMSG_NEXT (nlmh, read_len))
- + {
- + if (nladdr.nl_pid != 0 || (pid_t) nlmh->nlmsg_pid != pid
- + || nlmh->nlmsg_seq != req.nlh.nlmsg_seq)
- + continue;
- +
- + if (nlmh->nlmsg_type == RTM_NEWADDR)
- + {
- + struct ifaddrmsg *ifam = (struct ifaddrmsg *) NLMSG_DATA (nlmh);
- +
- + switch (ifam->ifa_family)
- + {
- + case AF_INET:
- + *seen_ipv4 = true;
- + break;
- + case AF_INET6:
- + *seen_ipv6 = true;
- +
- + if (ifam->ifa_flags & (IFA_F_DEPRECATED
- + | IFA_F_TEMPORARY
- + | IFA_F_HOMEADDRESS))
- + {
- + struct rtattr *rta = IFA_RTA (ifam);
- + size_t len = (nlmh->nlmsg_len
- + - NLMSG_LENGTH (sizeof (*ifam)));
- + void *local = NULL;
- + void *address = NULL;
- + while (RTA_OK (rta, len))
- + {
- + switch (rta->rta_type)
- + {
- + case IFA_LOCAL:
- + local = RTA_DATA (rta);
- + break;
- +
- + case IFA_ADDRESS:
- + address = RTA_DATA (rta);
- + break;
- + }
- +
- + rta = RTA_NEXT (rta, len);
- + }
- +
- + struct in6ailist *newp = alloca (sizeof (*newp));
- + newp->info.flags = (((ifam->ifa_flags & IFA_F_DEPRECATED)
- + ? in6ai_deprecated : 0)
- + | ((ifam->ifa_flags
- + & IFA_F_TEMPORARY)
- + ? in6ai_temporary : 0)
- + | ((ifam->ifa_flags
- + & IFA_F_HOMEADDRESS)
- + ? in6ai_homeaddress : 0));
- + memcpy (newp->info.addr, address ?: local,
- + sizeof (newp->info.addr));
- + newp->next = in6ailist;
- + in6ailist = newp;
- + ++in6ailistlen;
- + }
- + break;
- + default:
- + /* Ignore. */
- + break;
- + }
- + }
- + else if (nlmh->nlmsg_type == NLMSG_DONE)
- + /* We found the end, leave the loop. */
- + done = true;
- + }
- + }
- + while (! done);
- +
- + close_not_cancel_no_status (fd);
- +
- + if (in6ailist != NULL)
- + {
- + *in6ai = malloc (in6ailistlen * sizeof (**in6ai));
- + if (*in6ai == NULL)
- + return -1;
- +
- + *in6ailen = in6ailistlen;
- +
- + do
- + {
- + (*in6ai)[--in6ailistlen] = in6ailist->info;
- + in6ailist = in6ailist->next;
- + }
- + while (in6ailist != NULL);
- + }
- +
- + return 0;
- +}
- +
- +
- +/* We don't know if we have NETLINK support compiled in in our
- + Kernel. */
- +#if __ASSUME_NETLINK_SUPPORT == 0
- +/* Define in ifaddrs.h. */
- +extern int __no_netlink_support attribute_hidden;
- +#else
- +# define __no_netlink_support 0
- +#endif
- +
- +
- +void
- +attribute_hidden
- +__check_pf (bool *seen_ipv4, bool *seen_ipv6,
- + struct in6addrinfo **in6ai, size_t *in6ailen)
- +{
- + *in6ai = NULL;
- + *in6ailen = 0;
- +
- + if (! __no_netlink_support)
- + {
- + int fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
- +
- + struct sockaddr_nl nladdr;
- + memset (&nladdr, '\0', sizeof (nladdr));
- + nladdr.nl_family = AF_NETLINK;
- +
- + socklen_t addr_len = sizeof (nladdr);
- +
- + if (fd >= 0
- + && __bind (fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) == 0
- + && __getsockname (fd, (struct sockaddr *) &nladdr, &addr_len) == 0
- + && make_request (fd, nladdr.nl_pid, seen_ipv4, seen_ipv6,
- + in6ai, in6ailen) == 0)
- + /* It worked. */
- + return;
- +
- + if (fd >= 0)
- + __close (fd);
- +
- +#if __ASSUME_NETLINK_SUPPORT == 0
- + /* Remember that there is no netlink support. */
- + __no_netlink_support = 1;
- +#else
- + /* We cannot determine what interfaces are available. Be
- + pessimistic. */
- + *seen_ipv4 = true;
- + *seen_ipv6 = true;
- +#endif
- + }
- +
- +#if __ASSUME_NETLINK_SUPPORT == 0
- + /* No netlink. Get the interface list via getifaddrs. */
- + struct ifaddrs *ifa = NULL;
- + if (getifaddrs (&ifa) != 0)
- + {
- + /* We cannot determine what interfaces are available. Be
- + pessimistic. */
- + *seen_ipv4 = true;
- + *seen_ipv6 = true;
- + return;
- + }
- +
- + struct ifaddrs *runp;
- + for (runp = ifa; runp != NULL; runp = runp->ifa_next)
- + if (runp->ifa_addr->sa_family == PF_INET)
- + *seen_ipv4 = true;
- + else if (runp->ifa_addr->sa_family == PF_INET6)
- + *seen_ipv6 = true;
- +
- + (void) freeifaddrs (ifa);
- +#endif
- +}
- Index: sysdeps/unix/sysv/linux/arm/eabi/check_pf.c
- ===================================================================
- RCS file: sysdeps/unix/sysv/linux/arm/eabi/check_pf.c
- diff -N sysdeps/unix/sysv/linux/arm/eabi/check_pf.c
- --- /dev/null 1 Jan 1970 00:00:00 -0000
- +++ sysdeps/unix/sysv/linux/arm/eabi/check_pf.c 31 Oct 2006 17:29:58 -0000
- @@ -0,0 +1 @@
- +#include <sysdeps/unix/sysv/linux/check_pf.c>