2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1998-1999 by Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #if defined(LIBC_SCCS) && !defined(lint)
19 static const char rcsid[] = "$Id: getgrent_r.c,v 1.5.206.1 2004/03/09 08:33:35 marka Exp $";
20 #endif /* LIBC_SCCS and not lint */
22 #include <port_before.h>
23 #if !defined(_REENTRANT) || !defined(DO_PTHREADS) || !defined(WANT_IRS_PW)
24 static int getgrent_r_not_required = 0;
29 #include <sys/types.h>
30 #if (defined(POSIX_GETGRNAM_R) || defined(POSIX_GETGRGID_R)) && \
31 defined(_POSIX_PTHREAD_SEMANTICS)
32 /* turn off solaris remapping in <grp.h> */
34 #undef _POSIX_PTHREAD_SEMANTICS
36 #define _POSIX_PTHREAD_SEMANTICS 1
40 #include <sys/param.h>
41 #include <port_after.h>
46 copy_group(struct group *, struct group *, char *buf, int buflen);
49 #ifdef POSIX_GETGRNAM_R
51 __posix_getgrnam_r(const char *name, struct group *gptr,
52 char *buf, int buflen, struct group **result) {
55 getgrnam_r(const char *name, struct group *gptr,
56 char *buf, size_t buflen, struct group **result) {
58 struct group *ge = getgrnam(name);
66 res = copy_group(ge, gptr, buf, buflen);
67 *result = res ? NULL : gptr;
71 #ifdef POSIX_GETGRNAM_R
73 getgrnam_r(const char *name, struct group *gptr,
74 char *buf, int buflen) {
75 struct group *ge = getgrnam(name);
80 res = copy_group(ge, gptr, buf, buflen);
81 return (res ? NULL : gptr);
83 #endif /* POSIX_GETGRNAM_R */
86 #ifdef POSIX_GETGRGID_R
88 __posix_getgrgid_r(gid_t gid, struct group *gptr,
89 char *buf, int buflen, struct group **result) {
90 #else /* POSIX_GETGRGID_R */
92 getgrgid_r(gid_t gid, struct group *gptr,
93 char *buf, size_t buflen, struct group **result) {
94 #endif /* POSIX_GETGRGID_R */
95 struct group *ge = getgrgid(gid);
103 res = copy_group(ge, gptr, buf, buflen);
104 *result = res ? NULL : gptr;
108 #ifdef POSIX_GETGRGID_R
110 getgrgid_r(gid_t gid, struct group *gptr,
111 char *buf, int buflen) {
112 struct group *ge = getgrgid(gid);
118 res = copy_group(ge, gptr, buf, buflen);
119 return (res ? NULL : gptr);
124 * These assume a single context is in operation per thread.
125 * If this is not the case we will need to call irs directly
126 * rather than through the base functions.
130 getgrent_r(struct group *gptr, GROUP_R_ARGS) {
131 struct group *ge = getgrent();
135 return (GROUP_R_BAD);
138 res = copy_group(ge, gptr, buf, buflen);
139 return (res ? GROUP_R_BAD : GROUP_R_OK);
143 setgrent_r(GROUP_R_ENT_ARGS) {
146 #ifdef GROUP_R_SET_RESULT
147 return (GROUP_R_SET_RESULT);
152 endgrent_r(GROUP_R_ENT_ARGS) {
155 GROUP_R_END_RESULT(GROUP_R_OK);
160 /* XXX irs does not have a fgetgrent() */
162 fgetgrent_r(FILE *f, struct group *gptr, GROUP_R_ARGS) {
163 struct group *ge = fgetgrent(f);
167 return (GROUP_R_BAD);
169 res = copy_group(ge, gptr, buf, buflen);
170 return (res ? GROUP_R_BAD : GROUP_R_OK);
177 copy_group(struct group *ge, struct group *gptr, char *buf, int buflen) {
182 /* Find out the amount of space required to store the answer. */
183 numptr = 1; /* NULL ptr */
184 len = (char *)ALIGN(buf) - buf;
185 for (i = 0; ge->gr_mem[i]; i++, numptr++) {
186 len += strlen(ge->gr_mem[i]) + 1;
188 len += strlen(ge->gr_name) + 1;
189 len += strlen(ge->gr_passwd) + 1;
190 len += numptr * sizeof(char*);
198 gptr->gr_gid = ge->gr_gid;
200 cp = (char *)ALIGN(buf) + numptr * sizeof(char *);
202 /* copy official name */
203 n = strlen(ge->gr_name) + 1;
204 strcpy(cp, ge->gr_name);
208 /* copy member list */
209 gptr->gr_mem = (char **)ALIGN(buf);
210 for (i = 0 ; ge->gr_mem[i]; i++) {
211 n = strlen(ge->gr_mem[i]) + 1;
212 strcpy(cp, ge->gr_mem[i]);
213 gptr->gr_mem[i] = cp;
216 gptr->gr_mem[i] = NULL;
219 n = strlen(ge->gr_passwd) + 1;
220 strcpy(cp, ge->gr_passwd);
221 gptr->gr_passwd = cp;
226 #else /* GROUP_R_RETURN */
227 static int getgrent_r_unknown_system = 0;
228 #endif /* GROUP_R_RETURN */
229 #endif /* !def(_REENTRANT) || !def(DO_PTHREADS) || !def(WANT_IRS_PW) */