1 /* Copyright (C) 1996-1999,2001-2004,2006,2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 #include <bits/libc-lock.h>
26 #include <rpcsvc/yp.h>
27 #include <rpcsvc/ypclnt.h>
32 /* Get the declaration of the parser function. */
34 #define STRUCTURE group
36 #include <nss/nss_files/files-parse.c>
38 /* Protect global state against multiple changers */
39 __libc_lock_define_initialized (static, lock)
41 static bool_t new_start = 1;
44 static intern_t intern;
48 internal_nis_endgrent (void)
58 struct response_t *curr = intern.start;
62 struct response_t *last = curr;
67 intern.next = intern.start = NULL;
72 _nss_nis_endgrent (void)
74 __libc_lock_lock (lock);
76 internal_nis_endgrent ();
78 __libc_lock_unlock (lock);
80 return NSS_STATUS_SUCCESS;
85 internal_nis_setgrent (void)
87 /* We have to read all the data now. */
89 if (__builtin_expect (yp_get_default_domain (&domain), 0))
90 return NSS_STATUS_UNAVAIL;
92 struct ypall_callback ypcb;
94 ypcb.foreach = _nis_saveit;
95 ypcb.data = (char *) &intern;
96 enum nss_status status = yperr2nss (yp_all (domain, "group.byname", &ypcb));
99 /* Mark the last buffer as full. */
100 if (intern.next != NULL)
101 intern.next->size = intern.offset;
103 intern.next = intern.start;
111 _nss_nis_setgrent (int stayopen)
113 enum nss_status result = NSS_STATUS_SUCCESS;
115 __libc_lock_lock (lock);
117 internal_nis_endgrent ();
119 if (_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
120 result = internal_nis_setgrent ();
122 __libc_lock_unlock (lock);
128 static enum nss_status
129 internal_nis_getgrent_r (struct group *grp, char *buffer, size_t buflen,
132 /* If we read the entire database at setpwent time we just iterate
133 over the data we have in memory. */
134 bool batch_read = intern.start != NULL;
137 if (!batch_read && __builtin_expect (yp_get_default_domain (&domain), 0))
138 return NSS_STATUS_UNAVAIL;
140 /* Get the next entry until we found a correct one. */
151 struct response_t *bucket;
154 bucket = intern.next;
156 if (__builtin_expect (intern.offset >= bucket->size, 0))
158 if (bucket->next == NULL)
159 return NSS_STATUS_NOTFOUND;
161 /* We look at all the content in the current bucket. Go on
163 bucket = intern.next = bucket->next;
167 for (result = &bucket->mem[intern.offset]; isspace (*result);
171 len = strlen (result);
179 /* Maybe we should read the database in one piece. */
180 if ((_nsl_default_nss () & NSS_FLAG_SETENT_BATCH_READ)
181 && internal_nis_setgrent () == NSS_STATUS_SUCCESS
182 && intern.start != NULL)
185 goto handle_batch_read;
188 yperr = yp_first (domain, "group.byname", &outkey, &keylen,
192 yperr = yp_next (domain, "group.byname", oldkey, oldkeylen,
193 &outkey, &keylen, &result, &len);
195 if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
197 enum nss_status retval = yperr2nss (yperr);
199 if (retval == NSS_STATUS_TRYAGAIN)
205 if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
210 return NSS_STATUS_TRYAGAIN;
213 char *p = strncpy (buffer, result, len);
220 parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
222 if (__builtin_expect (parse_res == -1, 0))
227 return NSS_STATUS_TRYAGAIN;
231 intern.offset += len + 1;
240 while (parse_res < 1);
242 return NSS_STATUS_SUCCESS;
246 _nss_nis_getgrent_r (struct group *result, char *buffer, size_t buflen,
251 __libc_lock_lock (lock);
253 status = internal_nis_getgrent_r (result, buffer, buflen, errnop);
255 __libc_lock_unlock (lock);
261 _nss_nis_getgrnam_r (const char *name, struct group *grp,
262 char *buffer, size_t buflen, int *errnop)
267 return NSS_STATUS_UNAVAIL;
271 if (__builtin_expect (yp_get_default_domain (&domain), 0))
272 return NSS_STATUS_UNAVAIL;
276 int yperr = yp_match (domain, "group.byname", name, strlen (name), &result,
279 if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
281 enum nss_status retval = yperr2nss (yperr);
283 if (retval == NSS_STATUS_TRYAGAIN)
288 if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
292 return NSS_STATUS_TRYAGAIN;
295 char *p = strncpy (buffer, result, len);
301 int parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
303 if (__builtin_expect (parse_res < 1, 0))
306 return NSS_STATUS_TRYAGAIN;
308 return NSS_STATUS_NOTFOUND;
310 return NSS_STATUS_SUCCESS;
314 _nss_nis_getgrgid_r (gid_t gid, struct group *grp,
315 char *buffer, size_t buflen, int *errnop)
318 if (__builtin_expect (yp_get_default_domain (&domain), 0))
319 return NSS_STATUS_UNAVAIL;
322 int nlen = sprintf (buf, "%lu", (unsigned long int) gid);
326 int yperr = yp_match (domain, "group.bygid", buf, nlen, &result, &len);
328 if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
330 enum nss_status retval = yperr2nss (yperr);
332 if (retval == NSS_STATUS_TRYAGAIN)
337 if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
341 return NSS_STATUS_TRYAGAIN;
344 char *p = strncpy (buffer, result, len);
350 int parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
352 if (__builtin_expect (parse_res < 1, 0))
355 return NSS_STATUS_TRYAGAIN;
357 return NSS_STATUS_NOTFOUND;
359 return NSS_STATUS_SUCCESS;