[dhcp] Drop all capabilities in dhcpd/dhcrelay (#699713)

Jiří Popelka jpopelka at fedoraproject.org
Fri Jul 1 14:07:45 UTC 2011


commit 48c3985b3a85747a806f811a93364e17bec1d243
Author: Jiri Popelka <jpopelka at redhat.com>
Date:   Fri Jul 1 15:20:42 2011 +0200

    Drop all capabilities in dhcpd/dhcrelay (#699713)

 dhcp-4.2.1-capability.patch |  178 ------------------------
 dhcp-4.2.2-PIE-RELRO.patch  |   27 ++--
 dhcp-4.2.2-capability.patch |  323 +++++++++++++++++++++++++++++++++++++++++++
 dhcp.spec                   |    6 +-
 dhcp420-sharedlib.patch     |   58 ++++----
 5 files changed, 371 insertions(+), 221 deletions(-)
---
diff --git a/dhcp-4.2.2-PIE-RELRO.patch b/dhcp-4.2.2-PIE-RELRO.patch
index 0eb68b1..eb7ae4b 100644
--- a/dhcp-4.2.2-PIE-RELRO.patch
+++ b/dhcp-4.2.2-PIE-RELRO.patch
@@ -1,6 +1,6 @@
 diff -up dhcp-4.2.2b1/bind/Makefile.PIE-RELRO dhcp-4.2.2b1/bind/Makefile
 --- dhcp-4.2.2b1/bind/Makefile.PIE-RELRO	2011-06-27 23:43:09.000000000 +0200
-+++ dhcp-4.2.2b1/bind/Makefile	2011-07-01 14:28:49.134674155 +0200
++++ dhcp-4.2.2b1/bind/Makefile	2011-07-01 15:13:40.605394073 +0200
 @@ -45,7 +45,7 @@ all:
  # Currently disable the epoll and devpoll options as they don't interact
  # well with the DHCP code.
@@ -11,8 +11,8 @@ diff -up dhcp-4.2.2b1/bind/Makefile.PIE-RELRO dhcp-4.2.2b1/bind/Makefile
  # Build the export libraries
  	@echo Building BIND Export libraries - this takes some time.
 diff -up dhcp-4.2.2b1/client/Makefile.am.PIE-RELRO dhcp-4.2.2b1/client/Makefile.am
---- dhcp-4.2.2b1/client/Makefile.am.PIE-RELRO	2011-07-01 14:26:36.995286194 +0200
-+++ dhcp-4.2.2b1/client/Makefile.am	2011-07-01 14:26:37.047285196 +0200
+--- dhcp-4.2.2b1/client/Makefile.am.PIE-RELRO	2011-07-01 15:13:40.554394544 +0200
++++ dhcp-4.2.2b1/client/Makefile.am	2011-07-01 15:13:40.606394064 +0200
 @@ -4,15 +4,11 @@ dhclient_SOURCES = clparse.c dhclient.c 
  		   scripts/bsdos scripts/freebsd scripts/linux scripts/macos \
  		   scripts/netbsd scripts/nextstep scripts/openbsd \
@@ -35,7 +35,7 @@ diff -up dhcp-4.2.2b1/client/Makefile.am.PIE-RELRO dhcp-4.2.2b1/client/Makefile.
 -		   -DLOCALSTATEDIR='"$(localstatedir)"' -c dhc6.c
 diff -up dhcp-4.2.2b1/common/Makefile.am.PIE-RELRO dhcp-4.2.2b1/common/Makefile.am
 --- dhcp-4.2.2b1/common/Makefile.am.PIE-RELRO	2011-02-18 19:44:42.000000000 +0100
-+++ dhcp-4.2.2b1/common/Makefile.am	2011-07-01 14:26:37.048285177 +0200
++++ dhcp-4.2.2b1/common/Makefile.am	2011-07-01 15:13:40.606394064 +0200
 @@ -1,5 +1,5 @@
  AM_CPPFLAGS = -I.. -DLOCALSTATEDIR='"@localstatedir@"'
 -AM_CFLAGS = $(LDAP_CFLAGS)
@@ -44,8 +44,8 @@ diff -up dhcp-4.2.2b1/common/Makefile.am.PIE-RELRO dhcp-4.2.2b1/common/Makefile.
  noinst_LIBRARIES = libdhcp.a
  libdhcp_a_SOURCES = alloc.c bpf.c comapi.c conflex.c ctrace.c discover.c \
 diff -up dhcp-4.2.2b1/omapip/Makefile.am.PIE-RELRO dhcp-4.2.2b1/omapip/Makefile.am
---- dhcp-4.2.2b1/omapip/Makefile.am.PIE-RELRO	2011-07-01 14:26:36.884288319 +0200
-+++ dhcp-4.2.2b1/omapip/Makefile.am	2011-07-01 14:26:37.048285177 +0200
+--- dhcp-4.2.2b1/omapip/Makefile.am.PIE-RELRO	2011-07-01 15:13:40.425395732 +0200
++++ dhcp-4.2.2b1/omapip/Makefile.am	2011-07-01 15:13:40.606394064 +0200
 @@ -1,3 +1,5 @@
 +AM_CFLAGS = -fpic
 +
@@ -60,31 +60,32 @@ diff -up dhcp-4.2.2b1/omapip/Makefile.am.PIE-RELRO dhcp-4.2.2b1/omapip/Makefile.
  svtest_LDADD = libomapi.a $(BIND9_LIBDIR) -ldns-export -lisc-export
  
 diff -up dhcp-4.2.2b1/relay/Makefile.am.PIE-RELRO dhcp-4.2.2b1/relay/Makefile.am
---- dhcp-4.2.2b1/relay/Makefile.am.PIE-RELRO	2011-07-01 14:26:36.884288319 +0200
-+++ dhcp-4.2.2b1/relay/Makefile.am	2011-07-01 14:26:37.049285158 +0200
+--- dhcp-4.2.2b1/relay/Makefile.am.PIE-RELRO	2011-07-01 15:13:40.000000000 +0200
++++ dhcp-4.2.2b1/relay/Makefile.am	2011-07-01 15:14:16.178059890 +0200
 @@ -2,8 +2,11 @@ AM_CPPFLAGS = -DLOCALSTATEDIR='"@localst
  
  sbin_PROGRAMS = dhcrelay
  dhcrelay_SOURCES = dhcrelay.c
 +dhcrelay_CFLAGS = -fpie
  dhcrelay_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
- 		 $(BIND9_LIBDIR) -ldns-export -lisc-export
+ 		 $(BIND9_LIBDIR) -ldns-export -lisc-export $(CAPNG_LDADD)
 +dhcrelay_LDFLAGS = -pie -Wl,-z,relro -Wl,-z,now
 +
  man_MANS = dhcrelay.8
  EXTRA_DIST = $(man_MANS)
  
 diff -up dhcp-4.2.2b1/server/Makefile.am.PIE-RELRO dhcp-4.2.2b1/server/Makefile.am
---- dhcp-4.2.2b1/server/Makefile.am.PIE-RELRO	2011-07-01 14:26:36.885288300 +0200
-+++ dhcp-4.2.2b1/server/Makefile.am	2011-07-01 14:26:37.049285158 +0200
-@@ -6,9 +6,10 @@ dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c c
+--- dhcp-4.2.2b1/server/Makefile.am.PIE-RELRO	2011-07-01 15:13:40.000000000 +0200
++++ dhcp-4.2.2b1/server/Makefile.am	2011-07-01 15:14:50.248728082 +0200
+@@ -6,10 +6,11 @@ dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c c
  		omapi.c mdb.c stables.c salloc.c ddns.c dhcpleasequery.c \
  		dhcpv6.c mdb6.c ldap.c ldap_casa.c
  
 -dhcpd_CFLAGS = $(LDAP_CFLAGS)
 +dhcpd_CFLAGS = $(LDAP_CFLAGS) -fpie
  dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
- 	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export
+ 	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export \
+ 	      $(CAPNG_LDADD)
 +dhcpd_LDFLAGS = -pie -Wl,-z,relro -Wl,-z,now
  
  man_MANS = dhcpd.8 dhcpd.conf.5 dhcpd.leases.5
diff --git a/dhcp-4.2.2-capability.patch b/dhcp-4.2.2-capability.patch
new file mode 100644
index 0000000..115c40b
--- /dev/null
+++ b/dhcp-4.2.2-capability.patch
@@ -0,0 +1,323 @@
+diff -up dhcp-4.2.2b1/client/dhclient.8.capability dhcp-4.2.2b1/client/dhclient.8
+--- dhcp-4.2.2b1/client/dhclient.8.capability	2011-07-01 15:09:06.603784531 +0200
++++ dhcp-4.2.2b1/client/dhclient.8	2011-07-01 15:09:06.663783913 +0200
+@@ -118,6 +118,9 @@ dhclient - Dynamic Host Configuration Pr
+ .B -w
+ ]
+ [
++.B -nc
++]
++[
+ .B -B
+ ]
+ [
+@@ -296,6 +299,32 @@ has been added or removed, so that the c
+ address on that interface.
+ 
+ .TP
++.BI \-nc
++Do not drop capabilities.
++
++Normally, if
++.B dhclient
++was compiled with libcap-ng support,
++.B dhclient
++drops most capabilities immediately upon startup.  While more secure,
++this greatly restricts the additional actions that hooks in
++.B dhclient-script (8)
++can take.  (For example, any daemons that 
++.B dhclient-script (8)
++starts or restarts will inherit the restricted capabilities as well,
++which may interfere with their correct operation.)  Thus, the
++.BI \-nc
++option can be used to prevent
++.B dhclient
++from dropping capabilities.
++
++The
++.BI \-nc
++option is ignored if
++.B dhclient
++was not compiled with libcap-ng support.
++
++.TP
+ .BI \-B
+ Set the BOOTP broadcast flag in request packets so servers will always
+ broadcast replies.
+diff -up dhcp-4.2.2b1/client/dhclient.c.capability dhcp-4.2.2b1/client/dhclient.c
+--- dhcp-4.2.2b1/client/dhclient.c.capability	2011-07-01 15:09:06.644784107 +0200
++++ dhcp-4.2.2b1/client/dhclient.c	2011-07-01 15:09:06.664783903 +0200
+@@ -39,6 +39,10 @@
+ #include <limits.h>
+ #include <dns/result.h>
+ 
++#ifdef HAVE_LIBCAP_NG
++#include <cap-ng.h>
++#endif
++
+ /*
+  * Defined in stdio.h when _GNU_SOURCE is set, but we don't want to define
+  * that when building ISC code.
+@@ -141,6 +145,9 @@ main(int argc, char **argv) {
+ 	int timeout_arg = 0;
+ 	char *arg_conf = NULL;
+ 	int arg_conf_len = 0;
++#ifdef HAVE_LIBCAP_NG
++	int keep_capabilities = 0;
++#endif
+ 
+ 	/* Initialize client globals. */
+ 	memset(&default_duid, 0, sizeof(default_duid));
+@@ -410,6 +417,10 @@ main(int argc, char **argv) {
+ 			}
+ 
+ 			dhclient_request_options = argv[i];
++		} else if (!strcmp(argv[i], "-nc")) {
++#ifdef HAVE_LIBCAP_NG
++			keep_capabilities = 1;
++#endif
+ 		} else if (argv[i][0] == '-') {
+ 		    usage();
+ 		} else if (interfaces_requested < 0) {
+@@ -458,6 +469,19 @@ main(int argc, char **argv) {
+ 		path_dhclient_script = s;
+ 	}
+ 
++#ifdef HAVE_LIBCAP_NG
++	/* Drop capabilities */
++	if (!keep_capabilities) {
++		capng_clear(CAPNG_SELECT_CAPS);
++		capng_update(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
++				CAP_DAC_OVERRIDE); // Drop this someday
++		capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
++				CAP_NET_ADMIN, CAP_NET_RAW,
++				CAP_NET_BIND_SERVICE, CAP_SYS_ADMIN, -1);
++		capng_apply(CAPNG_SELECT_CAPS);
++	}
++#endif
++
+ 	/* Set up the initial dhcp option universe. */
+ 	initialize_common_option_spaces();
+ 
+diff -up dhcp-4.2.2b1/client/dhclient-script.8.capability dhcp-4.2.2b1/client/dhclient-script.8
+--- dhcp-4.2.2b1/client/dhclient-script.8.capability	2011-07-01 15:09:06.604784521 +0200
++++ dhcp-4.2.2b1/client/dhclient-script.8	2011-07-01 15:09:06.666783883 +0200
+@@ -239,6 +239,16 @@ repeatedly initialized to the values pro
+ the other.   Assuming the information provided by both servers is
+ valid, this shouldn't cause any real problems, but it could be
+ confusing.
++.PP
++Normally, if dhclient was compiled with libcap-ng support,
++dhclient drops most capabilities immediately upon startup.
++While more secure, this greatly restricts the additional actions that
++hooks in dhclient-script can take. For example, any daemons that
++dhclient-script starts or restarts will inherit the restricted
++capabilities as well, which may interfere with their correct operation.
++Thus, the
++.BI \-nc
++option can be used to prevent dhclient from dropping capabilities.
+ .SH SEE ALSO
+ dhclient(8), dhcpd(8), dhcrelay(8), dhclient.conf(5) and
+ dhclient.leases(5).
+diff -up dhcp-4.2.2b1/client/Makefile.am.capability dhcp-4.2.2b1/client/Makefile.am
+--- dhcp-4.2.2b1/client/Makefile.am.capability	2011-07-01 15:09:06.526785327 +0200
++++ dhcp-4.2.2b1/client/Makefile.am	2011-07-01 15:09:06.667783873 +0200
+@@ -5,7 +5,7 @@ dhclient_SOURCES = clparse.c dhclient.c 
+ 		   scripts/netbsd scripts/nextstep scripts/openbsd \
+ 		   scripts/solaris scripts/openwrt
+ dhclient_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
+-		 $(BIND9_LIBDIR) -ldns-export -lisc-export
++		 $(BIND9_LIBDIR) -ldns-export -lisc-export $(CAPNG_LDADD)
+ man_MANS = dhclient.8 dhclient-script.8 dhclient.conf.5 dhclient.leases.5
+ EXTRA_DIST = $(man_MANS)
+ 
+diff -up dhcp-4.2.2b1/configure.ac.capability dhcp-4.2.2b1/configure.ac
+--- dhcp-4.2.2b1/configure.ac.capability	2011-07-01 15:09:06.527785317 +0200
++++ dhcp-4.2.2b1/configure.ac	2011-07-01 15:09:06.667783873 +0200
+@@ -449,6 +449,41 @@ AC_TRY_LINK(
+ # Look for optional headers.
+ AC_CHECK_HEADERS(sys/socket.h net/if_dl.h net/if6.h regex.h)
+ 
++# look for capabilities library
++AC_ARG_WITH(libcap-ng,
++    [  --with-libcap-ng=[auto/yes/no]  Add Libcap-ng support [default=auto]],,
++    with_libcap_ng=auto)
++
++# Check for Libcap-ng API
++#
++# libcap-ng detection
++if test x$with_libcap_ng = xno ; then
++    have_libcap_ng=no;
++else
++    # Start by checking for header file
++    AC_CHECK_HEADER(cap-ng.h, capng_headers=yes, capng_headers=no)
++
++    # See if we have libcap-ng library
++    AC_CHECK_LIB(cap-ng, capng_clear,
++                 CAPNG_LDADD=-lcap-ng,)
++
++    # Check results are usable
++    if test x$with_libcap_ng = xyes -a x$CAPNG_LDADD = x ; then
++       AC_MSG_ERROR(libcap-ng support was requested and the library was not found)
++    fi
++    if test x$CAPNG_LDADD != x -a $capng_headers = no ; then
++       AC_MSG_ERROR(libcap-ng libraries found but headers are missing)
++    fi
++fi
++AC_SUBST(CAPNG_LDADD)
++AC_MSG_CHECKING(whether to use libcap-ng)
++if test x$CAPNG_LDADD != x ; then
++    AC_DEFINE(HAVE_LIBCAP_NG,1,[libcap-ng support])
++    AC_MSG_RESULT(yes)
++else
++    AC_MSG_RESULT(no)
++fi
++
+ # Solaris needs some libraries for functions
+ AC_SEARCH_LIBS(socket, [socket])
+ AC_SEARCH_LIBS(inet_ntoa, [nsl])
+diff -up dhcp-4.2.2b1/relay/dhcrelay.c.capability dhcp-4.2.2b1/relay/dhcrelay.c
+--- dhcp-4.2.2b1/relay/dhcrelay.c.capability	2011-07-01 15:09:06.626784295 +0200
++++ dhcp-4.2.2b1/relay/dhcrelay.c	2011-07-01 15:12:05.362223794 +0200
+@@ -36,6 +36,11 @@
+ #include <syslog.h>
+ #include <sys/time.h>
+ 
++#ifdef HAVE_LIBCAP_NG
++#  include <cap-ng.h>
++   int keep_capabilities = 0;
++#endif
++
+ TIME default_lease_time = 43200; /* 12 hours... */
+ TIME max_lease_time = 86400; /* 24 hours... */
+ struct tree_cache *global_options[256];
+@@ -356,6 +361,10 @@ main(int argc, char **argv) {
+ 			sl->next = upstreams;
+ 			upstreams = sl;
+ #endif
++		} else if (!strcmp(argv[i], "-nc")) {
++#ifdef HAVE_LIBCAP_NG
++			keep_capabilities = 1;
++#endif
+ 		} else if (!strcmp(argv[i], "-pf")) {
+ 			if (++i == argc)
+ 				usage();
+@@ -426,6 +435,17 @@ main(int argc, char **argv) {
+ #endif
+ 	}
+ 
++#ifdef HAVE_LIBCAP_NG
++	/* Drop capabilities */
++	if (!keep_capabilities) {
++		capng_clear(CAPNG_SELECT_BOTH);
++		capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
++				CAP_NET_RAW, CAP_NET_BIND_SERVICE, -1);
++		capng_apply(CAPNG_SELECT_BOTH);
++		log_debug ("Dropped all unnecessary capabilities.");
++	}
++#endif
++
+ 	if (!quiet) {
+ 		log_info("%s %s", message, PACKAGE_VERSION);
+ 		log_info(copyright);
+@@ -573,6 +593,15 @@ main(int argc, char **argv) {
+ 		dhcpv6_packet_handler = do_packet6;
+ #endif
+ 
++#ifdef HAVE_LIBCAP_NG
++	/* Drop all capabilities */
++	if (!keep_capabilities) {
++		capng_clear(CAPNG_SELECT_BOTH);
++		capng_apply(CAPNG_SELECT_BOTH);
++		log_debug ("Dropped all capabilities.");
++	}
++#endif
++
+ 	/* Start dispatching packets and timeouts... */
+ 	dispatch();
+ 
+diff -up dhcp-4.2.2b1/relay/Makefile.am.capability dhcp-4.2.2b1/relay/Makefile.am
+--- dhcp-4.2.2b1/relay/Makefile.am.capability	2011-07-01 15:09:06.546785121 +0200
++++ dhcp-4.2.2b1/relay/Makefile.am	2011-07-01 15:09:06.670783841 +0200
+@@ -3,7 +3,7 @@ AM_CPPFLAGS = -DLOCALSTATEDIR='"@localst
+ sbin_PROGRAMS = dhcrelay
+ dhcrelay_SOURCES = dhcrelay.c
+ dhcrelay_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
+-		 $(BIND9_LIBDIR) -ldns-export -lisc-export
++		 $(BIND9_LIBDIR) -ldns-export -lisc-export $(CAPNG_LDADD)
+ man_MANS = dhcrelay.8
+ EXTRA_DIST = $(man_MANS)
+ 
+diff -up dhcp-4.2.2b1/server/dhcpd.c.capability dhcp-4.2.2b1/server/dhcpd.c
+--- dhcp-4.2.2b1/server/dhcpd.c.capability	2011-07-01 15:09:06.636784192 +0200
++++ dhcp-4.2.2b1/server/dhcpd.c	2011-07-01 15:09:06.670783841 +0200
+@@ -58,6 +58,11 @@ static const char url [] =
+ #  undef group
+ #endif /* PARANOIA */
+ 
++#ifdef HAVE_LIBCAP_NG
++#  include <cap-ng.h>
++   int keep_capabilities = 0;
++#endif
++
+ static void usage(void);
+ 
+ struct iaddr server_identifier;
+@@ -403,6 +408,10 @@ main(int argc, char **argv) {
+ 			traceinfile = argv [i];
+ 			trace_replay_init ();
+ #endif /* TRACING */
++		} else if (!strcmp(argv[i], "-nc")) {
++#ifdef HAVE_LIBCAP_NG
++			keep_capabilities = 1;
++#endif
+ 		} else if (argv [i][0] == '-') {
+ 			usage ();
+ 		} else {
+@@ -459,6 +468,17 @@ main(int argc, char **argv) {
+         }
+ #endif /* DHCPv6 */
+ 
++#ifdef HAVE_LIBCAP_NG
++	/* Drop capabilities */
++	if (!keep_capabilities) {
++		capng_clear(CAPNG_SELECT_BOTH);
++		capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE|CAPNG_PERMITTED,
++				CAP_NET_RAW, CAP_NET_BIND_SERVICE, -1);
++		capng_apply(CAPNG_SELECT_BOTH);
++		log_debug ("Dropped all unnecessary capabilities.");
++	}
++#endif
++
+         /*
+          * convert relative path names to absolute, for files that need
+          * to be reopened after chdir() has been called
+@@ -859,6 +879,15 @@ main(int argc, char **argv) {
+ 	omapi_set_int_value ((omapi_object_t *)dhcp_control_object,
+ 			     (omapi_object_t *)0, "state", server_running);
+ 
++#ifdef HAVE_LIBCAP_NG
++	/* Drop all capabilities */
++	if (!keep_capabilities) {
++		capng_clear(CAPNG_SELECT_BOTH);
++		capng_apply(CAPNG_SELECT_BOTH);
++		log_debug ("Dropped all capabilities.");
++	}
++#endif
++
+ 	/* Receive packets and dispatch them... */
+ 	dispatch ();
+ 
+diff -up dhcp-4.2.2b1/server/Makefile.am.capability dhcp-4.2.2b1/server/Makefile.am
+--- dhcp-4.2.2b1/server/Makefile.am.capability	2011-07-01 15:09:06.546785121 +0200
++++ dhcp-4.2.2b1/server/Makefile.am	2011-07-01 15:09:06.671783830 +0200
+@@ -8,7 +8,8 @@ dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c c
+ 
+ dhcpd_CFLAGS = $(LDAP_CFLAGS)
+ dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
+-	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export
++	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export \
++	      $(CAPNG_LDADD)
+ 
+ man_MANS = dhcpd.8 dhcpd.conf.5 dhcpd.leases.5
+ EXTRA_DIST = $(man_MANS)
diff --git a/dhcp.spec b/dhcp.spec
index bedd73c..259548c 100644
--- a/dhcp.spec
+++ b/dhcp.spec
@@ -54,7 +54,7 @@ Patch14:  dhcp-4.2.0-garbage-chars.patch
 Patch15:  dhcp-4.2.0-missing-ipv6-not-fatal.patch
 Patch17:  dhcp-4.2.0-add_timeout_when_NULL.patch
 Patch18:  dhcp-4.2.1-64_bit_lease_parse.patch
-Patch19:  dhcp-4.2.1-capability.patch
+Patch19:  dhcp-4.2.2-capability.patch
 Patch20:  dhcp-4.2.0-logpid.patch
 Patch21:  dhcp-4.2.0-UseMulticast.patch
 Patch22:  dhcp-4.2.1-sendDecline.patch
@@ -251,7 +251,8 @@ rm bind/bind.tar.gz
 # (Partly submitted to dhcp-bugs at isc.org - [ISC-Bugs #22033])
 %patch18 -p1 -b .64-bit_lease_parse
 
-# Drop unnecessary capabilities in dhclient (#517649, #546765)
+# Drop unnecessary capabilities in
+# dhclient (#517649, #546765), dhcpd/dhcrelay (#699713)
 %patch19 -p1 -b .capability
 
 # dhclient logs its pid to make troubleshooting NM managed systems
@@ -649,6 +650,7 @@ fi
 %changelog
 * Fri Jul 01 2011 Jiri Popelka <jpopelka at redhat.com> - 12:4.2.2-0.1.b1
 - 4.2.2b1: upstream merged initialization-delay.patch
+- Drop all capabilities in dhcpd/dhcrelay (#699713)
 
 * Fri Jun 17 2011 Jiri Popelka <jpopelka at redhat.com> - 12:4.2.1-12.P1
 - Removed upstream-merged IFNAMSIZ.patch
diff --git a/dhcp420-sharedlib.patch b/dhcp420-sharedlib.patch
index 6ed8ea5..749bef6 100644
--- a/dhcp420-sharedlib.patch
+++ b/dhcp420-sharedlib.patch
@@ -1,6 +1,6 @@
-diff -up dhcp-4.2.0/client/Makefile.am.sharedlib dhcp-4.2.0/client/Makefile.am
---- dhcp-4.2.0/client/Makefile.am.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/client/Makefile.am	2010-10-01 14:22:36.030002772 +0200
+diff -up dhcp-4.2.1-P1/client/Makefile.am.sharedlib dhcp-4.2.1-P1/client/Makefile.am
+--- dhcp-4.2.1-P1/client/Makefile.am.sharedlib	2011-06-30 17:04:29.476676590 +0200
++++ dhcp-4.2.1-P1/client/Makefile.am	2011-06-30 17:04:29.488676414 +0200
 @@ -6,7 +6,7 @@ dhclient_SOURCES = clparse.c dhclient.c 
  		   scripts/solaris scripts/openwrt
  dhclient_CPPFLAGS = -DCLIENT_PATH='"$(sbindir)"' -DLOCALSTATEDIR='"$(localstatedir)"'
@@ -10,9 +10,9 @@ diff -up dhcp-4.2.0/client/Makefile.am.sharedlib dhcp-4.2.0/client/Makefile.am
  		 $(BIND9_LIBDIR) -ldns-export -lisc-export $(CAPNG_LDADD)
  dhclient_LDFLAGS = -pie -Wl,-z,relro -Wl,-z,now
  
-diff -up dhcp-4.2.0/configure.ac.sharedlib dhcp-4.2.0/configure.ac
---- dhcp-4.2.0/configure.ac.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/configure.ac	2010-10-01 14:22:36.060002772 +0200
+diff -up dhcp-4.2.1-P1/configure.ac.sharedlib dhcp-4.2.1-P1/configure.ac
+--- dhcp-4.2.1-P1/configure.ac.sharedlib	2011-06-30 17:04:29.428677294 +0200
++++ dhcp-4.2.1-P1/configure.ac	2011-06-30 17:04:29.707673194 +0200
 @@ -30,7 +30,8 @@ fi
  # Use this to define _GNU_SOURCE to pull in the IPv6 Advanced Socket API.
  AC_USE_SYSTEM_EXTENSIONS
@@ -23,9 +23,9 @@ diff -up dhcp-4.2.0/configure.ac.sharedlib dhcp-4.2.0/configure.ac
  AC_CONFIG_HEADERS([includes/config.h])
  
  # we sometimes need to know byte order for building packets
-diff -up dhcp-4.2.0/dhcpctl/Makefile.am.sharedlib dhcp-4.2.0/dhcpctl/Makefile.am
---- dhcp-4.2.0/dhcpctl/Makefile.am.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/dhcpctl/Makefile.am	2010-10-01 14:22:36.030002772 +0200
+diff -up dhcp-4.2.1-P1/dhcpctl/Makefile.am.sharedlib dhcp-4.2.1-P1/dhcpctl/Makefile.am
+--- dhcp-4.2.1-P1/dhcpctl/Makefile.am.sharedlib	2011-06-30 17:04:29.311679013 +0200
++++ dhcp-4.2.1-P1/dhcpctl/Makefile.am	2011-06-30 17:04:29.489676399 +0200
 @@ -1,15 +1,15 @@
  bin_PROGRAMS = omshell
 -lib_LIBRARIES = libdhcpctl.a
@@ -46,9 +46,9 @@ diff -up dhcp-4.2.0/dhcpctl/Makefile.am.sharedlib dhcp-4.2.0/dhcpctl/Makefile.am
 -cltest_LDADD = libdhcpctl.a ../common/libdhcp.a ../omapip/libomapi.a \
 +cltest_LDADD = libdhcpctl.la ../common/libdhcp.a ../omapip/libomapi.la \
  	       $(BIND9_LIBDIR) -ldns-export -lisc-export
-diff -up dhcp-4.2.0/dst/base64.c.sharedlib dhcp-4.2.0/dst/base64.c
---- dhcp-4.2.0/dst/base64.c.sharedlib	2010-10-01 14:27:18.280002774 +0200
-+++ dhcp-4.2.0/dst/base64.c	2010-10-01 14:28:10.650002773 +0200
+diff -up dhcp-4.2.1-P1/dst/base64.c.sharedlib dhcp-4.2.1-P1/dst/base64.c
+--- dhcp-4.2.1-P1/dst/base64.c.sharedlib	2009-11-20 02:49:01.000000000 +0100
++++ dhcp-4.2.1-P1/dst/base64.c	2011-06-30 17:04:29.489676399 +0200
 @@ -64,6 +64,7 @@ static const char rcsid[] = "$Id: base64
  
  #include <sys/socket.h>
@@ -57,9 +57,9 @@ diff -up dhcp-4.2.0/dst/base64.c.sharedlib dhcp-4.2.0/dst/base64.c
  #include "cdefs.h"
  #include "osdep.h"
  #include "arpa/nameser.h"
-diff -up dhcp-4.2.0/dst/Makefile.am.sharedlib dhcp-4.2.0/dst/Makefile.am
---- dhcp-4.2.0/dst/Makefile.am.sharedlib	2007-05-29 18:32:10.000000000 +0200
-+++ dhcp-4.2.0/dst/Makefile.am	2010-10-01 14:22:36.030002772 +0200
+diff -up dhcp-4.2.1-P1/dst/Makefile.am.sharedlib dhcp-4.2.1-P1/dst/Makefile.am
+--- dhcp-4.2.1-P1/dst/Makefile.am.sharedlib	2007-05-29 18:32:10.000000000 +0200
++++ dhcp-4.2.1-P1/dst/Makefile.am	2011-06-30 17:04:29.490676384 +0200
 @@ -1,8 +1,8 @@
  AM_CPPFLAGS = -DMINIRES_LIB -DHMAC_MD5
  
@@ -71,9 +71,9 @@ diff -up dhcp-4.2.0/dst/Makefile.am.sharedlib dhcp-4.2.0/dst/Makefile.am
  		   base64.c prandom.c
  
  EXTRA_DIST = dst_internal.h md5.h md5_locl.h
-diff -up dhcp-4.2.0/omapip/Makefile.am.sharedlib dhcp-4.2.0/omapip/Makefile.am
---- dhcp-4.2.0/omapip/Makefile.am.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/omapip/Makefile.am	2010-10-01 14:22:36.030002772 +0200
+diff -up dhcp-4.2.1-P1/omapip/Makefile.am.sharedlib dhcp-4.2.1-P1/omapip/Makefile.am
+--- dhcp-4.2.1-P1/omapip/Makefile.am.sharedlib	2011-06-30 17:04:29.477676575 +0200
++++ dhcp-4.2.1-P1/omapip/Makefile.am	2011-06-30 17:04:29.490676384 +0200
 @@ -1,9 +1,9 @@
  AM_CFLAGS = -fpic
  
@@ -93,29 +93,31 @@ diff -up dhcp-4.2.0/omapip/Makefile.am.sharedlib dhcp-4.2.0/omapip/Makefile.am
 -svtest_LDADD = libomapi.a $(BIND9_LIBDIR) -ldns-export -lisc-export
 +svtest_LDADD = libomapi.la $(BIND9_LIBDIR) -ldns-export -lisc-export
  
-diff -up dhcp-4.2.0/relay/Makefile.am.sharedlib dhcp-4.2.0/relay/Makefile.am
---- dhcp-4.2.0/relay/Makefile.am.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/relay/Makefile.am	2010-10-01 14:22:36.030002772 +0200
+diff -up dhcp-4.2.1-P1/relay/Makefile.am.sharedlib dhcp-4.2.1-P1/relay/Makefile.am
+--- dhcp-4.2.1-P1/relay/Makefile.am.sharedlib	2011-06-30 17:04:29.478676560 +0200
++++ dhcp-4.2.1-P1/relay/Makefile.am	2011-06-30 17:04:29.490676384 +0200
 @@ -3,7 +3,7 @@ AM_CPPFLAGS = -DLOCALSTATEDIR='"@localst
  sbin_PROGRAMS = dhcrelay
  dhcrelay_SOURCES = dhcrelay.c
  dhcrelay_CFLAGS = -fpie
 -dhcrelay_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
 +dhcrelay_LDADD = ../common/libdhcp.a ../omapip/libomapi.la \
- 		 $(BIND9_LIBDIR) -ldns-export -lisc-export
+ 		 $(BIND9_LIBDIR) -ldns-export -lisc-export $(CAPNG_LDADD)
  dhcrelay_LDFLAGS = -pie -Wl,-z,relro -Wl,-z,now
  
-diff -up dhcp-4.2.0/server/Makefile.am.sharedlib dhcp-4.2.0/server/Makefile.am
---- dhcp-4.2.0/server/Makefile.am.sharedlib	2010-10-01 14:22:36.020002772 +0200
-+++ dhcp-4.2.0/server/Makefile.am	2010-10-01 14:22:36.030002772 +0200
-@@ -7,8 +7,8 @@ dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c c
+diff -up dhcp-4.2.1-P1/server/Makefile.am.sharedlib dhcp-4.2.1-P1/server/Makefile.am
+--- dhcp-4.2.1-P1/server/Makefile.am.sharedlib	2011-06-30 17:04:29.478676560 +0200
++++ dhcp-4.2.1-P1/server/Makefile.am	2011-06-30 17:06:32.831862566 +0200
+@@ -7,9 +7,9 @@ dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c c
  		dhcpv6.c mdb6.c ldap.c ldap_casa.c
  
  dhcpd_CFLAGS = $(LDAP_CFLAGS) -fpie
 -dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.a \
--	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export
+-	      ../dhcpctl/libdhcpctl.a $(BIND9_LIBDIR) -ldns-export -lisc-export \
+-	      $(CAPNG_LDADD)
 +dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.la \
-+	      ../dhcpctl/libdhcpctl.la $(BIND9_LIBDIR) -ldns-export -lisc-export
++	      ../dhcpctl/libdhcpctl.la $(BIND9_LIBDIR) \
++	      -ldns-export -lisc-export $(CAPNG_LDADD)
  dhcpd_LDFLAGS = -pie -Wl,-z,relro -Wl,-z,now
  
  man_MANS = dhcpd.8 dhcpd.conf.5 dhcpd.leases.5


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