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Commit | Line | Data |
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a032b68d | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
663996b3 | 2 | |
663996b3 | 3 | #include <errno.h> |
663996b3 | 4 | #include <net/if.h> |
db2df898 MP |
5 | #include <netdb.h> |
6 | #include <nss.h> | |
663996b3 | 7 | #include <stdlib.h> |
663996b3 | 8 | |
db2df898 | 9 | #include "alloc-util.h" |
bb4f798a | 10 | #include "errno-util.h" |
db2df898 | 11 | #include "hostname-util.h" |
5eef597e | 12 | #include "local-addresses.h" |
663996b3 | 13 | #include "macro.h" |
5eef597e | 14 | #include "nss-util.h" |
4c89c718 | 15 | #include "signal-util.h" |
db2df898 | 16 | #include "string-util.h" |
663996b3 MS |
17 | |
18 | /* We use 127.0.0.2 as IPv4 address. This has the advantage over | |
19 | * 127.0.0.1 that it can be translated back to the local hostname. For | |
20 | * IPv6 we use ::1 which unfortunately will not translate back to the | |
e735f4d4 | 21 | * hostname but instead something like "localhost" or so. */ |
663996b3 | 22 | |
5a920b42 | 23 | #define LOCALADDRESS_IPV4 (htobe32(0x7F000002)) |
663996b3 | 24 | #define LOCALADDRESS_IPV6 &in6addr_loopback |
663996b3 | 25 | |
5eef597e MP |
26 | NSS_GETHOSTBYNAME_PROTOTYPES(myhostname); |
27 | NSS_GETHOSTBYADDR_PROTOTYPES(myhostname); | |
663996b3 MS |
28 | |
29 | enum nss_status _nss_myhostname_gethostbyname4_r( | |
30 | const char *name, | |
31 | struct gaih_addrtuple **pat, | |
32 | char *buffer, size_t buflen, | |
33 | int *errnop, int *h_errnop, | |
34 | int32_t *ttlp) { | |
35 | ||
5eef597e MP |
36 | struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL; |
37 | _cleanup_free_ struct local_address *addresses = NULL; | |
38 | _cleanup_free_ char *hn = NULL; | |
663996b3 | 39 | const char *canonical = NULL; |
2897b343 | 40 | int n_addresses = 0; |
5eef597e MP |
41 | uint32_t local_address_ipv4; |
42 | struct local_address *a; | |
663996b3 MS |
43 | size_t l, idx, ms; |
44 | char *r_name; | |
5eef597e MP |
45 | unsigned n; |
46 | ||
6e866b33 | 47 | PROTECT_ERRNO; |
4c89c718 MP |
48 | BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); |
49 | ||
5eef597e MP |
50 | assert(name); |
51 | assert(pat); | |
52 | assert(buffer); | |
53 | assert(errnop); | |
54 | assert(h_errnop); | |
663996b3 | 55 | |
5eef597e | 56 | if (is_localhost(name)) { |
8b3d4ff0 | 57 | /* We respond to 'localhost', so that /etc/hosts is optional */ |
663996b3 MS |
58 | |
59 | canonical = "localhost"; | |
5a920b42 | 60 | local_address_ipv4 = htobe32(INADDR_LOOPBACK); |
f47781d8 | 61 | |
13d276d0 | 62 | } else if (is_gateway_hostname(name)) { |
f47781d8 MP |
63 | |
64 | n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses); | |
bb4f798a MB |
65 | if (n_addresses <= 0) |
66 | goto not_found; | |
f47781d8 | 67 | |
f5e65279 | 68 | canonical = "_gateway"; |
f47781d8 | 69 | |
8b3d4ff0 MB |
70 | } else if (is_outbound_hostname(name)) { |
71 | ||
72 | n_addresses = local_outbounds(NULL, 0, AF_UNSPEC, &addresses); | |
73 | if (n_addresses <= 0) | |
74 | goto not_found; | |
75 | ||
76 | canonical = "_outbound"; | |
77 | ||
663996b3 | 78 | } else { |
5eef597e MP |
79 | hn = gethostname_malloc(); |
80 | if (!hn) { | |
7c20daf6 | 81 | UNPROTECT_ERRNO; |
5eef597e | 82 | *errnop = ENOMEM; |
663996b3 | 83 | *h_errnop = NO_RECOVERY; |
5eef597e | 84 | return NSS_STATUS_TRYAGAIN; |
663996b3 MS |
85 | } |
86 | ||
a10f5d05 | 87 | /* We respond to our local hostname, our hostname suffixed with a single dot. */ |
bb4f798a MB |
88 | if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) |
89 | goto not_found; | |
663996b3 | 90 | |
f47781d8 | 91 | n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
5eef597e MP |
92 | if (n_addresses < 0) |
93 | n_addresses = 0; | |
663996b3 MS |
94 | |
95 | canonical = hn; | |
96 | local_address_ipv4 = LOCALADDRESS_IPV4; | |
97 | } | |
98 | ||
663996b3 | 99 | l = strlen(canonical); |
5eef597e | 100 | ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * (n_addresses > 0 ? n_addresses : 2); |
663996b3 | 101 | if (buflen < ms) { |
7c20daf6 | 102 | UNPROTECT_ERRNO; |
2897b343 MP |
103 | *errnop = ERANGE; |
104 | *h_errnop = NETDB_INTERNAL; | |
663996b3 MS |
105 | return NSS_STATUS_TRYAGAIN; |
106 | } | |
107 | ||
108 | /* First, fill in hostname */ | |
109 | r_name = buffer; | |
110 | memcpy(r_name, canonical, l+1); | |
111 | idx = ALIGN(l+1); | |
112 | ||
aa27b158 MP |
113 | assert(n_addresses >= 0); |
114 | if (n_addresses == 0) { | |
663996b3 MS |
115 | /* Second, fill in IPv6 tuple */ |
116 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); | |
117 | r_tuple->next = r_tuple_prev; | |
118 | r_tuple->name = r_name; | |
119 | r_tuple->family = AF_INET6; | |
120 | memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16); | |
2897b343 | 121 | r_tuple->scopeid = 0; |
663996b3 MS |
122 | |
123 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
124 | r_tuple_prev = r_tuple; | |
125 | ||
126 | /* Third, fill in IPv4 tuple */ | |
127 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); | |
128 | r_tuple->next = r_tuple_prev; | |
129 | r_tuple->name = r_name; | |
130 | r_tuple->family = AF_INET; | |
131 | *(uint32_t*) r_tuple->addr = local_address_ipv4; | |
2897b343 | 132 | r_tuple->scopeid = 0; |
663996b3 MS |
133 | |
134 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
135 | r_tuple_prev = r_tuple; | |
136 | } | |
137 | ||
138 | /* Fourth, fill actual addresses in, but in backwards order */ | |
5eef597e | 139 | for (a = addresses + n_addresses - 1, n = 0; (int) n < n_addresses; n++, a--) { |
663996b3 MS |
140 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); |
141 | r_tuple->next = r_tuple_prev; | |
142 | r_tuple->name = r_name; | |
143 | r_tuple->family = a->family; | |
3a6ce677 | 144 | r_tuple->scopeid = a->family == AF_INET6 && in6_addr_is_link_local(&a->address.in6) ? a->ifindex : 0; |
5eef597e | 145 | memcpy(r_tuple->addr, &a->address, 16); |
663996b3 MS |
146 | |
147 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
148 | r_tuple_prev = r_tuple; | |
149 | } | |
150 | ||
151 | /* Verify the size matches */ | |
152 | assert(idx == ms); | |
153 | ||
154 | /* Nscd expects us to store the first record in **pat. */ | |
155 | if (*pat) | |
156 | **pat = *r_tuple_prev; | |
157 | else | |
158 | *pat = r_tuple_prev; | |
159 | ||
160 | if (ttlp) | |
161 | *ttlp = 0; | |
162 | ||
6e866b33 MB |
163 | /* Explicitly reset both *h_errnop and h_errno to work around |
164 | * https://bugzilla.redhat.com/show_bug.cgi?id=1125975 */ | |
5eef597e MP |
165 | *h_errnop = NETDB_SUCCESS; |
166 | h_errno = 0; | |
663996b3 MS |
167 | |
168 | return NSS_STATUS_SUCCESS; | |
bb4f798a MB |
169 | |
170 | not_found: | |
171 | *h_errnop = HOST_NOT_FOUND; | |
172 | return NSS_STATUS_NOTFOUND; | |
663996b3 MS |
173 | } |
174 | ||
175 | static enum nss_status fill_in_hostent( | |
176 | const char *canonical, const char *additional, | |
177 | int af, | |
5eef597e | 178 | struct local_address *addresses, unsigned n_addresses, |
663996b3 MS |
179 | uint32_t local_address_ipv4, |
180 | struct hostent *result, | |
181 | char *buffer, size_t buflen, | |
182 | int *errnop, int *h_errnop, | |
183 | int32_t *ttlp, | |
184 | char **canonp) { | |
185 | ||
5eef597e | 186 | size_t l_canonical, l_additional, idx, ms, alen; |
663996b3 | 187 | char *r_addr, *r_name, *r_aliases, *r_alias = NULL, *r_addr_list; |
5eef597e | 188 | struct local_address *a; |
663996b3 MS |
189 | unsigned n, c; |
190 | ||
5eef597e MP |
191 | assert(canonical); |
192 | assert(result); | |
193 | assert(buffer); | |
194 | assert(errnop); | |
195 | assert(h_errnop); | |
196 | ||
7c20daf6 FS |
197 | PROTECT_ERRNO; |
198 | ||
5eef597e | 199 | alen = FAMILY_ADDRESS_SIZE(af); |
663996b3 MS |
200 | |
201 | for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++) | |
202 | if (af == a->family) | |
203 | c++; | |
204 | ||
205 | l_canonical = strlen(canonical); | |
f5e65279 | 206 | l_additional = strlen_ptr(additional); |
663996b3 MS |
207 | ms = ALIGN(l_canonical+1)+ |
208 | (additional ? ALIGN(l_additional+1) : 0) + | |
5eef597e | 209 | sizeof(char*) + |
663996b3 | 210 | (additional ? sizeof(char*) : 0) + |
5eef597e MP |
211 | (c > 0 ? c : 1) * ALIGN(alen) + |
212 | (c > 0 ? c+1 : 2) * sizeof(char*); | |
663996b3 MS |
213 | |
214 | if (buflen < ms) { | |
7c20daf6 | 215 | UNPROTECT_ERRNO; |
2897b343 MP |
216 | *errnop = ERANGE; |
217 | *h_errnop = NETDB_INTERNAL; | |
663996b3 MS |
218 | return NSS_STATUS_TRYAGAIN; |
219 | } | |
220 | ||
221 | /* First, fill in hostnames */ | |
222 | r_name = buffer; | |
223 | memcpy(r_name, canonical, l_canonical+1); | |
224 | idx = ALIGN(l_canonical+1); | |
225 | ||
226 | if (additional) { | |
227 | r_alias = buffer + idx; | |
228 | memcpy(r_alias, additional, l_additional+1); | |
229 | idx += ALIGN(l_additional+1); | |
230 | } | |
231 | ||
232 | /* Second, create aliases array */ | |
233 | r_aliases = buffer + idx; | |
234 | if (additional) { | |
235 | ((char**) r_aliases)[0] = r_alias; | |
236 | ((char**) r_aliases)[1] = NULL; | |
237 | idx += 2*sizeof(char*); | |
238 | } else { | |
239 | ((char**) r_aliases)[0] = NULL; | |
240 | idx += sizeof(char*); | |
241 | } | |
242 | ||
243 | /* Third, add addresses */ | |
244 | r_addr = buffer + idx; | |
245 | if (c > 0) { | |
246 | unsigned i = 0; | |
247 | ||
248 | for (a = addresses, n = 0; n < n_addresses; a++, n++) { | |
249 | if (af != a->family) | |
250 | continue; | |
251 | ||
5eef597e | 252 | memcpy(r_addr + i*ALIGN(alen), &a->address, alen); |
663996b3 MS |
253 | i++; |
254 | } | |
255 | ||
256 | assert(i == c); | |
257 | idx += c*ALIGN(alen); | |
258 | } else { | |
259 | if (af == AF_INET) | |
260 | *(uint32_t*) r_addr = local_address_ipv4; | |
261 | else | |
262 | memcpy(r_addr, LOCALADDRESS_IPV6, 16); | |
263 | ||
264 | idx += ALIGN(alen); | |
265 | } | |
266 | ||
267 | /* Fourth, add address pointer array */ | |
268 | r_addr_list = buffer + idx; | |
269 | if (c > 0) { | |
5eef597e | 270 | unsigned i; |
663996b3 | 271 | |
5eef597e MP |
272 | for (i = 0; i < c; i++) |
273 | ((char**) r_addr_list)[i] = r_addr + i*ALIGN(alen); | |
663996b3 | 274 | |
5eef597e MP |
275 | ((char**) r_addr_list)[i] = NULL; |
276 | idx += (c+1) * sizeof(char*); | |
663996b3 MS |
277 | |
278 | } else { | |
279 | ((char**) r_addr_list)[0] = r_addr; | |
280 | ((char**) r_addr_list)[1] = NULL; | |
5eef597e | 281 | idx += 2 * sizeof(char*); |
663996b3 MS |
282 | } |
283 | ||
284 | /* Verify the size matches */ | |
285 | assert(idx == ms); | |
286 | ||
287 | result->h_name = r_name; | |
288 | result->h_aliases = (char**) r_aliases; | |
289 | result->h_addrtype = af; | |
290 | result->h_length = alen; | |
291 | result->h_addr_list = (char**) r_addr_list; | |
292 | ||
293 | if (ttlp) | |
294 | *ttlp = 0; | |
295 | ||
296 | if (canonp) | |
297 | *canonp = r_name; | |
298 | ||
6e866b33 MB |
299 | /* Explicitly reset both *h_errnop and h_errno to work around |
300 | * https://bugzilla.redhat.com/show_bug.cgi?id=1125975 */ | |
5eef597e MP |
301 | *h_errnop = NETDB_SUCCESS; |
302 | h_errno = 0; | |
663996b3 MS |
303 | |
304 | return NSS_STATUS_SUCCESS; | |
305 | } | |
306 | ||
307 | enum nss_status _nss_myhostname_gethostbyname3_r( | |
308 | const char *name, | |
309 | int af, | |
310 | struct hostent *host, | |
311 | char *buffer, size_t buflen, | |
312 | int *errnop, int *h_errnop, | |
313 | int32_t *ttlp, | |
314 | char **canonp) { | |
315 | ||
5eef597e | 316 | _cleanup_free_ struct local_address *addresses = NULL; |
663996b3 | 317 | const char *canonical, *additional = NULL; |
5eef597e | 318 | _cleanup_free_ char *hn = NULL; |
f47781d8 | 319 | uint32_t local_address_ipv4 = 0; |
5eef597e MP |
320 | int n_addresses = 0; |
321 | ||
6e866b33 | 322 | PROTECT_ERRNO; |
4c89c718 MP |
323 | BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); |
324 | ||
5eef597e MP |
325 | assert(name); |
326 | assert(host); | |
327 | assert(buffer); | |
328 | assert(errnop); | |
329 | assert(h_errnop); | |
663996b3 MS |
330 | |
331 | if (af == AF_UNSPEC) | |
332 | af = AF_INET; | |
333 | ||
f5e65279 | 334 | if (!IN_SET(af, AF_INET, AF_INET6)) { |
7c20daf6 | 335 | UNPROTECT_ERRNO; |
663996b3 MS |
336 | *errnop = EAFNOSUPPORT; |
337 | *h_errnop = NO_DATA; | |
338 | return NSS_STATUS_UNAVAIL; | |
339 | } | |
340 | ||
5eef597e | 341 | if (is_localhost(name)) { |
663996b3 | 342 | canonical = "localhost"; |
5a920b42 | 343 | local_address_ipv4 = htobe32(INADDR_LOOPBACK); |
f47781d8 | 344 | |
13d276d0 | 345 | } else if (is_gateway_hostname(name)) { |
f47781d8 MP |
346 | |
347 | n_addresses = local_gateways(NULL, 0, af, &addresses); | |
bb4f798a MB |
348 | if (n_addresses <= 0) |
349 | goto not_found; | |
f47781d8 | 350 | |
f5e65279 | 351 | canonical = "_gateway"; |
f47781d8 | 352 | |
8b3d4ff0 MB |
353 | } else if (is_outbound_hostname(name)) { |
354 | ||
355 | n_addresses = local_outbounds(NULL, 0, af, &addresses); | |
356 | if (n_addresses <= 0) | |
357 | goto not_found; | |
358 | ||
359 | canonical = "_outbound"; | |
360 | ||
663996b3 | 361 | } else { |
5eef597e MP |
362 | hn = gethostname_malloc(); |
363 | if (!hn) { | |
7c20daf6 | 364 | UNPROTECT_ERRNO; |
5eef597e | 365 | *errnop = ENOMEM; |
663996b3 | 366 | *h_errnop = NO_RECOVERY; |
5eef597e | 367 | return NSS_STATUS_TRYAGAIN; |
663996b3 MS |
368 | } |
369 | ||
bb4f798a MB |
370 | if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) |
371 | goto not_found; | |
663996b3 | 372 | |
f47781d8 | 373 | n_addresses = local_addresses(NULL, 0, af, &addresses); |
5eef597e MP |
374 | if (n_addresses < 0) |
375 | n_addresses = 0; | |
663996b3 MS |
376 | |
377 | canonical = hn; | |
378 | additional = n_addresses <= 0 && af == AF_INET6 ? "localhost" : NULL; | |
379 | local_address_ipv4 = LOCALADDRESS_IPV4; | |
380 | } | |
381 | ||
7c20daf6 FS |
382 | UNPROTECT_ERRNO; |
383 | ||
663996b3 MS |
384 | return fill_in_hostent( |
385 | canonical, additional, | |
386 | af, | |
387 | addresses, n_addresses, | |
388 | local_address_ipv4, | |
389 | host, | |
390 | buffer, buflen, | |
391 | errnop, h_errnop, | |
392 | ttlp, | |
393 | canonp); | |
bb4f798a MB |
394 | |
395 | not_found: | |
396 | *h_errnop = HOST_NOT_FOUND; | |
397 | return NSS_STATUS_NOTFOUND; | |
663996b3 MS |
398 | } |
399 | ||
663996b3 MS |
400 | enum nss_status _nss_myhostname_gethostbyaddr2_r( |
401 | const void* addr, socklen_t len, | |
402 | int af, | |
403 | struct hostent *host, | |
404 | char *buffer, size_t buflen, | |
405 | int *errnop, int *h_errnop, | |
406 | int32_t *ttlp) { | |
407 | ||
663996b3 | 408 | const char *canonical = NULL, *additional = NULL; |
5eef597e MP |
409 | uint32_t local_address_ipv4 = LOCALADDRESS_IPV4; |
410 | _cleanup_free_ struct local_address *addresses = NULL; | |
411 | _cleanup_free_ char *hn = NULL; | |
412 | int n_addresses = 0; | |
413 | struct local_address *a; | |
e735f4d4 | 414 | bool additional_from_hostname = false; |
5eef597e MP |
415 | unsigned n; |
416 | ||
6e866b33 | 417 | PROTECT_ERRNO; |
4c89c718 MP |
418 | BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); |
419 | ||
5eef597e MP |
420 | assert(addr); |
421 | assert(host); | |
422 | assert(buffer); | |
423 | assert(errnop); | |
424 | assert(h_errnop); | |
425 | ||
426 | if (!IN_SET(af, AF_INET, AF_INET6)) { | |
7c20daf6 | 427 | UNPROTECT_ERRNO; |
5eef597e MP |
428 | *errnop = EAFNOSUPPORT; |
429 | *h_errnop = NO_DATA; | |
430 | return NSS_STATUS_UNAVAIL; | |
431 | } | |
663996b3 | 432 | |
5eef597e | 433 | if (len != FAMILY_ADDRESS_SIZE(af)) { |
7c20daf6 | 434 | UNPROTECT_ERRNO; |
663996b3 MS |
435 | *errnop = EINVAL; |
436 | *h_errnop = NO_RECOVERY; | |
437 | return NSS_STATUS_UNAVAIL; | |
438 | } | |
439 | ||
440 | if (af == AF_INET) { | |
663996b3 MS |
441 | if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4) |
442 | goto found; | |
443 | ||
5a920b42 | 444 | if ((*(uint32_t*) addr) == htobe32(INADDR_LOOPBACK)) { |
663996b3 | 445 | canonical = "localhost"; |
5a920b42 | 446 | local_address_ipv4 = htobe32(INADDR_LOOPBACK); |
663996b3 MS |
447 | goto found; |
448 | } | |
449 | ||
5eef597e MP |
450 | } else { |
451 | assert(af == AF_INET6); | |
663996b3 MS |
452 | |
453 | if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) { | |
e735f4d4 MP |
454 | canonical = "localhost"; |
455 | additional_from_hostname = true; | |
663996b3 MS |
456 | goto found; |
457 | } | |
663996b3 MS |
458 | } |
459 | ||
f47781d8 | 460 | n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
aa27b158 MP |
461 | for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) { |
462 | if (af != a->family) | |
463 | continue; | |
663996b3 | 464 | |
aa27b158 MP |
465 | if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) |
466 | goto found; | |
f47781d8 MP |
467 | } |
468 | ||
13d276d0 | 469 | addresses = mfree(addresses); |
f47781d8 MP |
470 | |
471 | n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses); | |
aa27b158 MP |
472 | for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) { |
473 | if (af != a->family) | |
474 | continue; | |
f47781d8 | 475 | |
aa27b158 | 476 | if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) { |
f5e65279 | 477 | canonical = "_gateway"; |
aa27b158 | 478 | goto found; |
f47781d8 | 479 | } |
663996b3 MS |
480 | } |
481 | ||
663996b3 | 482 | *h_errnop = HOST_NOT_FOUND; |
663996b3 MS |
483 | return NSS_STATUS_NOTFOUND; |
484 | ||
485 | found: | |
aa27b158 | 486 | if (!canonical || additional_from_hostname) { |
e735f4d4 MP |
487 | hn = gethostname_malloc(); |
488 | if (!hn) { | |
7c20daf6 | 489 | UNPROTECT_ERRNO; |
e735f4d4 MP |
490 | *errnop = ENOMEM; |
491 | *h_errnop = NO_RECOVERY; | |
492 | return NSS_STATUS_TRYAGAIN; | |
493 | } | |
494 | ||
495 | if (!canonical) | |
496 | canonical = hn; | |
aa27b158 | 497 | else |
e735f4d4 MP |
498 | additional = hn; |
499 | } | |
663996b3 | 500 | |
7c20daf6 | 501 | UNPROTECT_ERRNO; |
663996b3 MS |
502 | return fill_in_hostent( |
503 | canonical, additional, | |
504 | af, | |
505 | addresses, n_addresses, | |
506 | local_address_ipv4, | |
507 | host, | |
508 | buffer, buflen, | |
509 | errnop, h_errnop, | |
510 | ttlp, | |
511 | NULL); | |
663996b3 MS |
512 | } |
513 | ||
5eef597e MP |
514 | NSS_GETHOSTBYNAME_FALLBACKS(myhostname); |
515 | NSS_GETHOSTBYADDR_FALLBACKS(myhostname); |