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22f7ceb695
So far the NSS module looks up only hostnames as provided by guests themselves. However, there are some cases where this is not enough: e.g. when there's a fresh new guest being installed (with some generic hostname) say from a live ISO image; or some (older) systems don't advertise their hostname in DHCP transactions at all. In cases like that it would be helpful if we translate domain name as seen by libvirt too so that users can: # virsh start $dom && ssh $dom In order to achieve that new libvirt-guest module is introduced, while older libvirt module maintains its current behaviour (that is translating guest provided names into IP addresses). Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* libvirt_nss: Name Service Switch plugin
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*
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* The aim is to enable users and applications to translate
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* domain names into IP addresses. However, this is currently
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* available only for those domains which gets their IP addresses
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* from a libvirt managed network.
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*
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* Copyright (C) 2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Michal Privoznik <mprivozn@redhat.com>
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*/
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#ifndef __LIBVIRT_NSS_H__
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# define __LIBVIRT_NSS_H__
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# include <nss.h>
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# include <netdb.h>
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# if !defined(LIBVIRT_NSS_GUEST)
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# define NSS_NAME(s) _nss_libvirt_##s##_r
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# else
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# define NSS_NAME(s) _nss_libvirt_guest_##s##_r
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# endif
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enum nss_status
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NSS_NAME(gethostbyname)(const char *name, struct hostent *result,
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char *buffer, size_t buflen, int *errnop,
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int *herrnop);
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enum nss_status
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NSS_NAME(gethostbyname2)(const char *name, int af, struct hostent *result,
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char *buffer, size_t buflen, int *errnop,
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int *herrnop);
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enum nss_status
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NSS_NAME(gethostbyname3)(const char *name, int af, struct hostent *result,
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char *buffer, size_t buflen, int *errnop,
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int *herrnop, int32_t *ttlp, char **canonp);
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# ifdef HAVE_STRUCT_GAIH_ADDRTUPLE
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enum nss_status
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NSS_NAME(gethostbyname4)(const char *name, struct gaih_addrtuple **pat,
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char *buffer, size_t buflen, int *errnop,
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int *herrnop, int32_t *ttlp);
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# endif /* HAVE_STRUCT_GAIH_ADDRTUPLE */
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# if defined(HAVE_BSD_NSS)
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ns_mtab*
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nss_module_register(const char *name, unsigned int *size,
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nss_module_unregister_fn *unregister);
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# endif /* HAVE_BSD_NSS */
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#endif /* __LIBVIRT_NSS_H__ */
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