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libvirt/config-post.h

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Don't link virt-login-shell against libvirt.so (CVE-2013-4400) The libvirt.so library has far too many library deps to allow linking against it from setuid programs. Those libraries can do stuff in __attribute__((constructor) functions which is not setuid safe. The virt-login-shell needs to link directly against individual files that it uses, with all library deps turned off except for libxml2 and libselinux. Create a libvirt-setuid-rpc-client.la library which is linked to by virt-login-shell. A config-post.h file allows this library to disable all external deps except libselinux and libxml2. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-10-10 20:09:08 +08:00
/*
* Copyright (C) 2013 Red Hat, Inc.
*
* This 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.
*
* This 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 this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/*
* Since virt-login-shell will be setuid, we must do everything
* we can to avoid linking to other libraries. Many of them do
* unsafe things in functions marked __atttribute__((constructor)).
* The only way avoid to avoid such deps is to re-compile the
* functions with the code in question disabled, and for that we
* must override the main config.h rules. Hence this file :-(
*/
#ifdef LIBVIRT_SETUID_RPC_CLIENT
# undef HAVE_LIBDEVMAPPER_H
# undef HAVE_LIBNL
# undef HAVE_LIBNL3
# undef HAVE_LIBSASL2
# undef WITH_CAPNG
# undef WITH_CURL
# undef WITH_DTRACE_PROBES
# undef WITH_GNUTLS
build: fix build of virt-login-shell on systems with older gnutls On systems where gnutls uses libgcrypt, I'm seeing the following build failure libvirt.c:314: error: variable 'virTLSThreadImpl' has initializer but incomplete type libvirt.c:319: error: 'GCRY_THREAD_OPTION_PTHREAD' undeclared here (not in a function) ... Fix by undefining WITH_GNUTLS_GCRYPT in config-post.h
2013-10-22 13:12:22 +08:00
# undef WITH_GNUTLS_GCRYPT
Don't link virt-login-shell against libvirt.so (CVE-2013-4400) The libvirt.so library has far too many library deps to allow linking against it from setuid programs. Those libraries can do stuff in __attribute__((constructor) functions which is not setuid safe. The virt-login-shell needs to link directly against individual files that it uses, with all library deps turned off except for libxml2 and libselinux. Create a libvirt-setuid-rpc-client.la library which is linked to by virt-login-shell. A config-post.h file allows this library to disable all external deps except libselinux and libxml2. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-10-10 20:09:08 +08:00
# undef WITH_MACVTAP
# undef WITH_NUMACTL
# undef WITH_SASL
# undef WITH_SSH2
# undef WITH_VIRTUALPORT
# undef WITH_YAJL
# undef WITH_YAJL2
#endif
nss: Implement _nss_libvirt_gethostbyname3_r The implementation is pretty straightforward. Moreover, because of the nature of things, gethostbyname_r and gethostbyname2_r can be implemented at the same time too. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-02-14 18:38:37 +08:00
/*
* With the NSS module it's the same story as virt-login-shell. See the
* explanation above.
*/
#ifdef LIBVIRT_NSS
# undef HAVE_LIBDEVMAPPER_H
# undef HAVE_LIBNL
# undef HAVE_LIBNL3
# undef HAVE_LIBSASL2
# undef WITH_CAPNG
# undef WITH_CURL
# undef WITH_DTRACE_PROBES
# undef WITH_GNUTLS
# undef WITH_GNUTLS_GCRYPT
# undef WITH_MACVTAP
# undef WITH_NUMACTL
# undef WITH_SASL
# undef WITH_SSH2
# undef WITH_VIRTUALPORT
# undef WITH_SECDRIVER_SELINUX
# undef WITH_SECDRIVER_APPARMOR
# undef WITH_CAPNG
#endif /* LIBVIRT_NSS */