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Re: Bug#630206: libnss-myhostname: FTBFS: fatal error: asm/types.h: No such file or directory



tags 630206 patch
thanks

2011/6/13 Robert Millan <rmh@debian.org>:
> 2011/6/13 Lennart Poettering <lennart@poettering.net>:
>> I think it is a major waste of time thinking about BSD and Hurd.
>>
>> That said, I'd be willing to merge a patch that adds support for those
>> legacy systems -- if it is minimal. Note however that it wouldn't be
>> release critical to me, i.e. I will not care if it works or not when
>> releasing a new version. But I geuss that doesn't matter much since it
>> is quite a finished project and I expect very few updates in the future.
>
> Seems simple enough, I'll give it a try.

Patch attached.  To be applied after "mv netlink.h ifconf.h".

--
Robert Millan
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/ifconf.c libnss-myhostname-0.3.new/ifconf.c
--- libnss-myhostname-0.3/ifconf.c	1970-01-01 01:00:00.000000000 +0100
+++ libnss-myhostname-0.3.new/ifconf.c	2011-06-13 14:06:34.000000000 +0200
@@ -0,0 +1,5 @@
+#ifdef __linux__
+#include "netlink.c"
+#else
+#include "legacy.c"
+#endif
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/ifconf.h libnss-myhostname-0.3.new/ifconf.h
--- libnss-myhostname-0.3/ifconf.h	2011-05-09 15:00:58.000000000 +0200
+++ libnss-myhostname-0.3.new/ifconf.h	2011-06-13 14:01:28.000000000 +0200
@@ -3,6 +3,8 @@
 #ifndef foonetlinkhfoo
 #define foonetlinkhfoo
 
+#include <sys/socket.h>
+
 /***
   This file is part of nss-myhostname.
 
@@ -37,7 +39,7 @@
 #define _public_ __attribute__ ((visibility("default")))
 #define _hidden_ __attribute__ ((visibility("hidden")))
 
-int netlink_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
 
 static inline size_t PROTO_ADDRESS_SIZE(int proto) {
         assert(proto == AF_INET || proto == AF_INET6);
@@ -45,4 +47,28 @@
         return proto == AF_INET6 ? 16 : 4;
 }
 
+static inline int address_compare(const void *_a, const void *_b) {
+        const struct address *a = _a, *b = _b;
+
+        /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
+
+        if (a->scope < b->scope)
+                return -1;
+        if (a->scope > b->scope)
+                return 1;
+
+        if (a->family == AF_INET && b->family == AF_INET6)
+                return -1;
+        if (a->family == AF_INET6 && b->family == AF_INET)
+                return 1;
+
+        if (a->ifindex < b->ifindex)
+                return -1;
+        if (a->ifindex > b->ifindex)
+                return 1;
+
+        return 0;
+}
+
+
 #endif
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/legacy.c libnss-myhostname-0.3.new/legacy.c
--- libnss-myhostname-0.3/legacy.c	1970-01-01 01:00:00.000000000 +0100
+++ libnss-myhostname-0.3.new/legacy.c	2011-06-13 14:06:18.000000000 +0200
@@ -0,0 +1,116 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of nss-myhostname.
+
+  Copyright 2008-2011 Lennart Poettering
+  Copyright 2011 Robert millan
+
+  nss-myhostname 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.
+
+  nss-myhostname 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 nss-myhostname; If not, see
+  <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <inttypes.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <stdlib.h>
+
+#include "ifconf.h"
+
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
+
+        struct address *list = NULL;
+        unsigned n_list = 0;
+
+        struct ifconf ifc;
+        int fd, r = 1, want;
+        unsigned int i;
+
+        fd = socket (AF_INET6, SOCK_DGRAM, 0);
+
+        want = sizeof (struct ifreq);
+        ifc.ifc_req = NULL;
+
+        do {
+                want *= 2;
+
+                ifc.ifc_req = realloc (ifc.ifc_req, want);
+                if (! ifc.ifc_req) {
+                        r = -errno;
+                        goto finish;
+                }
+
+                ifc.ifc_len = want;
+  
+                if (ioctl (fd, SIOCGIFCONF, &ifc) == -1) {
+                        r = -errno;
+                        goto finish;
+                }
+        } while (want == ifc.ifc_len);
+
+        for (i = 0; i < ifc.ifc_len / sizeof (struct ifreq); i++) {
+                int af = ifc.ifc_req[i].ifr_addr.sa_family;
+                const void *cp;
+
+                struct sockaddr_in6 *in6 = (void *) &ifc.ifc_req[i].ifr_addr;
+                struct sockaddr_in *in = (void *) &ifc.ifc_req[i].ifr_addr;
+
+                if (af != AF_INET && af != AF_INET6)
+                        continue;
+
+                        list = realloc(list, (n_list+1) * sizeof(struct address));
+                        if (!list) {
+                                r = -ENOMEM;
+                                goto finish;
+                        }
+
+                if (af == AF_INET6)
+                        cp = &in6->sin6_addr;
+                else
+                        cp = &in->sin_addr;
+
+                list[n_list].family = af;
+                list[n_list].scope = 0;
+                memcpy (list[n_list].address, cp, af == AF_INET ? 4 : 16);
+                list[n_list].ifindex = i;
+                n_list++;
+        }
+
+finish:
+        if (ifc.ifc_req)
+                free (ifc.ifc_req);
+
+        close(fd);
+
+        if (r < 0)
+                free(list);
+        else {
+                qsort(list, n_list, sizeof(struct address), address_compare);
+
+                *_list = list;
+                *_n_list = n_list;
+        }
+
+        return r;
+}
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/Makefile.am libnss-myhostname-0.3.new/Makefile.am
--- libnss-myhostname-0.3/Makefile.am	2011-05-06 16:27:54.000000000 +0200
+++ libnss-myhostname-0.3.new/Makefile.am	2011-06-13 14:02:40.000000000 +0200
@@ -43,8 +43,8 @@
 
 libnss_myhostname_la_SOURCES = \
 	nss-myhostname.c \
-	netlink.c \
-	netlink.h
+	ifconf.c \
+	ifconf.h
 
 libnss_myhostname_la_LDFLAGS = \
 	-avoid-version \
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/netlink.c libnss-myhostname-0.3.new/netlink.c
--- libnss-myhostname-0.3/netlink.c	2011-05-09 14:56:34.000000000 +0200
+++ libnss-myhostname-0.3.new/netlink.c	2011-06-13 14:04:09.000000000 +0200
@@ -35,32 +35,9 @@
 #include <inttypes.h>
 #include <stdlib.h>
 
-#include "netlink.h"
+#include "ifconf.h"
 
-static int address_compare(const void *_a, const void *_b) {
-        const struct address *a = _a, *b = _b;
-
-        /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
-
-        if (a->scope < b->scope)
-                return -1;
-        if (a->scope > b->scope)
-                return 1;
-
-        if (a->family == AF_INET && b->family == AF_INET6)
-                return -1;
-        if (a->family == AF_INET6 && b->family == AF_INET)
-                return 1;
-
-        if (a->ifindex < b->ifindex)
-                return -1;
-        if (a->ifindex > b->ifindex)
-                return 1;
-
-        return 0;
-}
-
-int netlink_acquire_addresses(struct address **_list, unsigned *_n_list) {
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
 
         struct {
                 struct nlmsghdr hdr;
diff -Nur -x aclocal.m4 -x configure -x doc libnss-myhostname-0.3/nss-myhostname.c libnss-myhostname-0.3.new/nss-myhostname.c
--- libnss-myhostname-0.3/nss-myhostname.c	2011-06-13 14:06:58.000000000 +0200
+++ libnss-myhostname-0.3.new/nss-myhostname.c	2011-06-13 14:02:26.000000000 +0200
@@ -32,7 +32,7 @@
 #include <stdlib.h>
 #include <arpa/inet.h>
 
-#include "netlink.h"
+#include "ifconf.h"
 
 /* We use 127.0.0.2 as IPv4 address. This has the advantage over
  * 127.0.0.1 that it can be translated back to the local hostname. For
@@ -120,7 +120,7 @@
         }
 
         /* If this fails, n_addresses is 0. Which is fine */
-        netlink_acquire_addresses(&addresses, &n_addresses);
+        ifconf_acquire_addresses(&addresses, &n_addresses);
 
         /* If this call fails we fill in 0 as scope. Which is fine */
         lo_ifi = if_nametoindex(LOOPBACK_INTERFACE);
@@ -206,7 +206,7 @@
 
         alen = PROTO_ADDRESS_SIZE(af);
 
-        netlink_acquire_addresses(&addresses, &n_addresses);
+        ifconf_acquire_addresses(&addresses, &n_addresses);
 
         for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++)
                 if (af == a->family)
@@ -405,7 +405,7 @@
                 return NSS_STATUS_UNAVAIL;
         }
 
-        netlink_acquire_addresses(&addresses, &n_addresses);
+        ifconf_acquire_addresses(&addresses, &n_addresses);
 
         for (a = addresses, n = 0; n < n_addresses; n++, a++) {
                 if (af != a->family)

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