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Commit | Line | Data |
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1fd5e000 CF |
1 | /* grp.cc |
2 | ||
a76877e9 CV |
3 | Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
4 | 2007 Red Hat, Inc. | |
1fd5e000 CF |
5 | |
6 | Original stubs by Jason Molenda of Cygnus Support, crash@cygnus.com | |
7 | First implementation by Gunther Ebert, gunther.ebert@ixos-leipzig.de | |
8 | ||
9 | This file is part of Cygwin. | |
10 | ||
11 | This software is a copyrighted work licensed under the terms of the | |
12 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
13 | details. */ | |
14 | ||
4c8d72de | 15 | #include "winsup.h" |
1fd5e000 CF |
16 | #include <stdio.h> |
17 | #include <stdlib.h> | |
169c465a | 18 | #include "cygerrno.h" |
e2ebe117 | 19 | #include "pinfo.h" |
f5e8e2be | 20 | #include "path.h" |
7ac61736 | 21 | #include "fhandler.h" |
47063f00 | 22 | #include "dtable.h" |
df63bd49 | 23 | #include "cygheap.h" |
49eef6d5 | 24 | #include "pwdgrp.h" |
1fd5e000 | 25 | |
7905c4f1 | 26 | static __group32 *group_buf; |
57394495 | 27 | static pwdgrp gr (group_buf); |
14ea5029 | 28 | static char * NO_COPY null_ptr; |
1fd5e000 | 29 | |
7905c4f1 | 30 | bool |
ac413374 | 31 | pwdgrp::parse_group () |
1fd5e000 | 32 | { |
57394495 | 33 | # define grp (*group_buf)[curr_lines] |
fea48988 | 34 | grp.gr_name = next_str (':'); |
65037056 | 35 | if (!*grp.gr_name) |
ac413374 | 36 | return false; |
1fd5e000 | 37 | |
fea48988 | 38 | grp.gr_passwd = next_str (':'); |
65037056 CF |
39 | |
40 | if (!next_num (grp.gr_gid)) | |
41 | return false; | |
42 | ||
43 | int n; | |
bdbd7fb6 | 44 | char *dp = raw_ptr (); |
65037056 CF |
45 | for (n = 0; *next_str (','); n++) |
46 | continue; | |
47 | ||
48 | grp.gr_mem = &null_ptr; | |
49 | if (n) | |
1fd5e000 | 50 | { |
c9133395 | 51 | char **namearray = (char **) calloc (n + 1, sizeof (char *)); |
ac413374 CF |
52 | if (namearray) |
53 | { | |
65037056 | 54 | for (int i = 0; i < n; i++, dp = strchr (dp, '\0') + 1) |
ac413374 | 55 | namearray[i] = dp; |
ac413374 | 56 | grp.gr_mem = namearray; |
1ff9f4b9 | 57 | } |
1fd5e000 | 58 | } |
65037056 CF |
59 | |
60 | return true; | |
7905c4f1 | 61 | # undef grp |
1fd5e000 CF |
62 | } |
63 | ||
1fd5e000 CF |
64 | /* Cygwin internal */ |
65 | /* Read in /etc/group and save contents in the group cache */ | |
66 | /* This sets group_in_memory_p to 1 so functions in this file can | |
67 | tell that /etc/group has been read in */ | |
57394495 CF |
68 | void |
69 | pwdgrp::read_group () | |
1fd5e000 | 70 | { |
57394495 CF |
71 | for (int i = 0; i < gr.curr_lines; i++) |
72 | if ((*group_buf)[i].gr_mem != &null_ptr) | |
981f9625 | 73 | free ((*group_buf)[i].gr_mem); |
1fd5e000 | 74 | |
65037056 | 75 | load ("/etc/group"); |
57394495 CF |
76 | |
77 | /* Complete /etc/group in memory if needed */ | |
78 | if (!internal_getgrgid (myself->gid)) | |
1fd5e000 | 79 | { |
57394495 CF |
80 | static char linebuf [200]; |
81 | char group_name [UNLEN + 1] = "mkgroup"; | |
82 | char strbuf[128] = ""; | |
a76877e9 | 83 | struct __group32 *gr; |
57394495 | 84 | |
a76877e9 CV |
85 | cygheap->user.groups.pgsid.string (strbuf); |
86 | if ((gr = internal_getgrsid (cygheap->user.groups.pgsid))) | |
87 | strlcpy (group_name, gr->gr_name, sizeof (group_name)); | |
565e8015 CV |
88 | if (myself->uid == UNKNOWN_UID) |
89 | strcpy (group_name, "mkpasswd"); /* Feedback... */ | |
57394495 CF |
90 | snprintf (linebuf, sizeof (linebuf), "%s:%s:%lu:%s", |
91 | group_name, strbuf, myself->gid, cygheap->user.name ()); | |
92 | debug_printf ("Completing /etc/group: %s", linebuf); | |
65037056 | 93 | add_line (linebuf); |
1fd5e000 | 94 | } |
57394495 | 95 | static char NO_COPY pretty_ls[] = "????????::-1:"; |
a76877e9 | 96 | add_line (pretty_ls); |
1fd5e000 CF |
97 | } |
98 | ||
2f1086cb CF |
99 | muto NO_COPY pwdgrp::pglock; |
100 | ||
f3c1c540 TP |
101 | pwdgrp::pwdgrp (passwd *&pbuf) : |
102 | pwdgrp_buf_elem_size (sizeof (*pbuf)), passwd_buf (&pbuf) | |
103 | { | |
104 | read = &pwdgrp::read_passwd; | |
105 | parse = &pwdgrp::parse_passwd; | |
2f1086cb | 106 | pglock.init ("pglock"); |
f3c1c540 TP |
107 | } |
108 | ||
109 | pwdgrp::pwdgrp (__group32 *&gbuf) : | |
110 | pwdgrp_buf_elem_size (sizeof (*gbuf)), group_buf (&gbuf) | |
111 | { | |
112 | read = &pwdgrp::read_group; | |
113 | parse = &pwdgrp::parse_group; | |
2f1086cb | 114 | pglock.init ("pglock"); |
f3c1c540 TP |
115 | } |
116 | ||
647b92a7 | 117 | struct __group32 * |
4a21c2d5 | 118 | internal_getgrsid (cygpsid &sid) |
647b92a7 CV |
119 | { |
120 | char sid_string[128]; | |
121 | ||
6688a061 | 122 | gr.refresh (false); |
647b92a7 CV |
123 | |
124 | if (sid.string (sid_string)) | |
7905c4f1 | 125 | for (int i = 0; i < gr.curr_lines; i++) |
d6ffc075 | 126 | if (!strcmp (sid_string, group_buf[i].gr_passwd)) |
9a751621 | 127 | return group_buf + i; |
647b92a7 CV |
128 | return NULL; |
129 | } | |
130 | ||
d6ffc075 | 131 | struct __group32 * |
e9152439 | 132 | internal_getgrgid (__gid32_t gid, bool check) |
d6ffc075 | 133 | { |
57394495 | 134 | gr.refresh (check); |
d6ffc075 | 135 | |
7905c4f1 | 136 | for (int i = 0; i < gr.curr_lines; i++) |
14ea5029 CF |
137 | if (group_buf[i].gr_gid == gid) |
138 | return group_buf + i; | |
139 | return NULL; | |
d6ffc075 CV |
140 | } |
141 | ||
142 | struct __group32 * | |
e9152439 | 143 | internal_getgrnam (const char *name, bool check) |
d6ffc075 | 144 | { |
57394495 | 145 | gr.refresh (check); |
d6ffc075 | 146 | |
7905c4f1 | 147 | for (int i = 0; i < gr.curr_lines; i++) |
d6ffc075 CV |
148 | if (strcasematch (group_buf[i].gr_name, name)) |
149 | return group_buf + i; | |
150 | ||
151 | /* Didn't find requested group */ | |
152 | return NULL; | |
153 | } | |
154 | ||
7905c4f1 | 155 | static struct __group16 * |
57196405 | 156 | grp32togrp16 (struct __group16 *gp16, struct __group32 *gp32) |
1fd5e000 | 157 | { |
57196405 CV |
158 | if (!gp16 || !gp32) |
159 | return NULL; | |
160 | ||
161 | /* Copying the pointers is actually unnecessary. Just having the correct | |
162 | return type is important. */ | |
163 | gp16->gr_name = gp32->gr_name; | |
164 | gp16->gr_passwd = gp32->gr_passwd; | |
165 | gp16->gr_gid = (__gid16_t) gp32->gr_gid; /* Not loss-free */ | |
166 | gp16->gr_mem = gp32->gr_mem; | |
167 | ||
168 | return gp16; | |
169 | } | |
170 | ||
68509b30 | 171 | extern "C" int |
aac9c88c CV |
172 | getgrgid_r (__gid32_t gid, struct __group32 *grp, char *buffer, size_t bufsize, |
173 | struct __group32 **result) | |
68509b30 CV |
174 | { |
175 | *result = NULL; | |
176 | ||
177 | if (!grp || !buffer) | |
178 | return ERANGE; | |
179 | ||
180 | struct __group32 *tempgr = internal_getgrgid (gid, true); | |
e3778517 | 181 | pthread_testcancel (); |
68509b30 CV |
182 | if (!tempgr) |
183 | return 0; | |
184 | ||
185 | /* check needed buffer size. */ | |
186 | int i; | |
187 | size_t needsize = strlen (tempgr->gr_name) + strlen (tempgr->gr_passwd) | |
188 | + 2 + sizeof (char *); | |
189 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
190 | needsize += strlen (tempgr->gr_mem[i]) + 1 + sizeof (char *); | |
191 | if (needsize > bufsize) | |
192 | return ERANGE; | |
193 | ||
194 | /* make a copy of tempgr */ | |
195 | *result = grp; | |
196 | grp->gr_gid = tempgr->gr_gid; | |
197 | grp->gr_name = buffer; | |
198 | grp->gr_passwd = grp->gr_name + strlen (tempgr->gr_name) + 1; | |
199 | grp->gr_mem = (char **) (grp->gr_passwd + strlen (tempgr->gr_passwd) + 1); | |
200 | char *mem = (char *) grp->gr_mem + (i + 1) * sizeof (char *); | |
201 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
202 | { | |
203 | grp->gr_mem[i] = mem; | |
204 | mem += strlen (tempgr->gr_mem[i]) + 1; | |
205 | } | |
206 | grp->gr_mem[i] = NULL; | |
207 | strcpy (grp->gr_name, tempgr->gr_name); | |
208 | strcpy (grp->gr_passwd, tempgr->gr_passwd); | |
209 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
210 | strcpy (grp->gr_mem[i], tempgr->gr_mem[i]); | |
211 | return 0; | |
212 | } | |
213 | ||
38c77307 | 214 | extern "C" struct __group32 * |
57196405 CV |
215 | getgrgid32 (__gid32_t gid) |
216 | { | |
2e008fb9 | 217 | return internal_getgrgid (gid, true); |
1fd5e000 CF |
218 | } |
219 | ||
38c77307 | 220 | extern "C" struct __group16 * |
57196405 CV |
221 | getgrgid (__gid16_t gid) |
222 | { | |
e9152439 | 223 | static struct __group16 g16; /* FIXME: thread-safe? */ |
57196405 | 224 | |
565e8015 | 225 | return grp32togrp16 (&g16, getgrgid32 (gid16togid32 (gid))); |
57196405 CV |
226 | } |
227 | ||
68509b30 | 228 | extern "C" int |
aac9c88c CV |
229 | getgrnam_r (const char *nam, struct __group32 *grp, char *buffer, |
230 | size_t bufsize, struct __group32 **result) | |
68509b30 CV |
231 | { |
232 | *result = NULL; | |
233 | ||
234 | if (!grp || !buffer) | |
235 | return ERANGE; | |
236 | ||
237 | struct __group32 *tempgr = internal_getgrnam (nam, true); | |
e3778517 | 238 | pthread_testcancel (); |
68509b30 CV |
239 | if (!tempgr) |
240 | return 0; | |
241 | ||
242 | /* check needed buffer size. */ | |
243 | int i; | |
244 | size_t needsize = strlen (tempgr->gr_name) + strlen (tempgr->gr_passwd) | |
245 | + 2 + sizeof (char *); | |
246 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
247 | needsize += strlen (tempgr->gr_mem[i]) + 1 + sizeof (char *); | |
248 | if (needsize > bufsize) | |
249 | return ERANGE; | |
250 | ||
251 | /* make a copy of tempgr */ | |
252 | *result = grp; | |
253 | grp->gr_gid = tempgr->gr_gid; | |
254 | grp->gr_name = buffer; | |
255 | grp->gr_passwd = grp->gr_name + strlen (tempgr->gr_name) + 1; | |
256 | grp->gr_mem = (char **) (grp->gr_passwd + strlen (tempgr->gr_passwd) + 1); | |
257 | char *mem = (char *) grp->gr_mem + (i + 1) * sizeof (char *); | |
258 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
259 | { | |
260 | grp->gr_mem[i] = mem; | |
261 | mem += strlen (tempgr->gr_mem[i]) + 1; | |
262 | } | |
263 | grp->gr_mem[i] = NULL; | |
264 | strcpy (grp->gr_name, tempgr->gr_name); | |
265 | strcpy (grp->gr_passwd, tempgr->gr_passwd); | |
266 | for (i = 0; tempgr->gr_mem[i]; ++i) | |
267 | strcpy (grp->gr_mem[i], tempgr->gr_mem[i]); | |
268 | return 0; | |
269 | } | |
270 | ||
38c77307 | 271 | extern "C" struct __group32 * |
57196405 | 272 | getgrnam32 (const char *name) |
1fd5e000 | 273 | { |
2e008fb9 | 274 | return internal_getgrnam (name, true); |
1fd5e000 CF |
275 | } |
276 | ||
38c77307 | 277 | extern "C" struct __group16 * |
57196405 CV |
278 | getgrnam (const char *name) |
279 | { | |
e9152439 | 280 | static struct __group16 g16; /* FIXME: thread-safe? */ |
57196405 CV |
281 | |
282 | return grp32togrp16 (&g16, getgrnam32 (name)); | |
283 | } | |
284 | ||
38c77307 | 285 | extern "C" void |
c90e1cf1 | 286 | endgrent () |
1fd5e000 | 287 | { |
29d52c8a | 288 | _my_tls.locals.grp_pos = 0; |
1fd5e000 CF |
289 | } |
290 | ||
38c77307 | 291 | extern "C" struct __group32 * |
c90e1cf1 | 292 | getgrent32 () |
1fd5e000 | 293 | { |
29d52c8a | 294 | if (_my_tls.locals.grp_pos == 0) |
6688a061 | 295 | gr.refresh (true); |
29d52c8a CF |
296 | if (_my_tls.locals.grp_pos < gr.curr_lines) |
297 | return group_buf + _my_tls.locals.grp_pos++; | |
1fd5e000 CF |
298 | |
299 | return NULL; | |
300 | } | |
301 | ||
38c77307 | 302 | extern "C" struct __group16 * |
c90e1cf1 | 303 | getgrent () |
57196405 | 304 | { |
e9152439 | 305 | static struct __group16 g16; /* FIXME: thread-safe? */ |
57196405 CV |
306 | |
307 | return grp32togrp16 (&g16, getgrent32 ()); | |
308 | } | |
309 | ||
38c77307 | 310 | extern "C" void |
1fd5e000 CF |
311 | setgrent () |
312 | { | |
29d52c8a | 313 | _my_tls.locals.grp_pos = 0; |
1fd5e000 CF |
314 | } |
315 | ||
d551169a | 316 | /* Internal function. ONLY USE THIS INTERNALLY, NEVER `getgrent'!!! */ |
57196405 | 317 | struct __group32 * |
d551169a CV |
318 | internal_getgrent (int pos) |
319 | { | |
6688a061 | 320 | gr.refresh (false); |
d551169a | 321 | |
7905c4f1 | 322 | if (pos < gr.curr_lines) |
d551169a CV |
323 | return group_buf + pos; |
324 | return NULL; | |
325 | } | |
326 | ||
1fd5e000 | 327 | int |
4a21c2d5 | 328 | internal_getgroups (int gidsetsize, __gid32_t *grouplist, cygpsid * srchsid) |
1fd5e000 | 329 | { |
c4548fb4 | 330 | HANDLE hToken = NULL; |
c4548fb4 CV |
331 | DWORD size; |
332 | int cnt = 0; | |
57196405 | 333 | struct __group32 *gr; |
d6ffc075 CV |
334 | __gid32_t gid; |
335 | const char *username; | |
1fd5e000 | 336 | |
68a3f0d3 | 337 | if (!srchsid && cygheap->user.groups.issetgroups ()) |
4ce377c9 | 338 | { |
68a3f0d3 CV |
339 | cygsid sid; |
340 | for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx) | |
341 | if (sid.getfromgr (gr)) | |
b825c587 | 342 | for (int pg = 0; pg < cygheap->user.groups.sgsids.count (); ++pg) |
68a3f0d3 CV |
343 | if (sid == cygheap->user.groups.sgsids.sids[pg] && |
344 | sid != well_known_world_sid) | |
345 | { | |
346 | if (cnt < gidsetsize) | |
347 | grouplist[cnt] = gr->gr_gid; | |
348 | ++cnt; | |
349 | if (gidsetsize && cnt > gidsetsize) | |
350 | goto error; | |
351 | break; | |
352 | } | |
353 | return cnt; | |
4ce377c9 | 354 | } |
68a3f0d3 CV |
355 | |
356 | ||
357 | /* If impersonated, use impersonation token. */ | |
358 | if (cygheap->user.issetuid ()) | |
77ee8805 | 359 | hToken = cygheap->user.primary_token (); |
68a3f0d3 | 360 | else |
5684cfeb | 361 | hToken = hProcToken; |
68a3f0d3 | 362 | |
4ce377c9 | 363 | if (hToken) |
c4548fb4 | 364 | { |
d551169a | 365 | if (GetTokenInformation (hToken, TokenGroups, NULL, 0, &size) |
1ff9f4b9 CF |
366 | || GetLastError () == ERROR_INSUFFICIENT_BUFFER) |
367 | { | |
d551169a CV |
368 | char buf[size]; |
369 | TOKEN_GROUPS *groups = (TOKEN_GROUPS *) buf; | |
370 | ||
371 | if (GetTokenInformation (hToken, TokenGroups, buf, size, &size)) | |
c4548fb4 | 372 | { |
d551169a CV |
373 | cygsid sid; |
374 | ||
14ea5029 | 375 | if (srchsid) |
9a751621 | 376 | { |
14ea5029 | 377 | for (DWORD pg = 0; pg < groups->GroupCount; ++pg) |
0daf2561 CV |
378 | if ((cnt = (*srchsid == groups->Groups[pg].Sid))) |
379 | break; | |
14ea5029 | 380 | } |
0daf2561 CV |
381 | else |
382 | for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx) | |
383 | if (sid.getfromgr (gr)) | |
384 | for (DWORD pg = 0; pg < groups->GroupCount; ++pg) | |
385 | if (sid == groups->Groups[pg].Sid && | |
386 | sid != well_known_world_sid) | |
e3778517 | 387 | { |
0daf2561 CV |
388 | if (cnt < gidsetsize) |
389 | grouplist[cnt] = gr->gr_gid; | |
390 | ++cnt; | |
391 | if (gidsetsize && cnt > gidsetsize) | |
f4a1f8a1 | 392 | goto error; |
0daf2561 CV |
393 | break; |
394 | } | |
c4548fb4 | 395 | } |
1ff9f4b9 | 396 | } |
d551169a | 397 | else |
1ff9f4b9 | 398 | debug_printf ("%d = GetTokenInformation(NULL) %E", size); |
afe13e84 | 399 | return cnt; |
c4548fb4 | 400 | } |
d551169a | 401 | |
d6ffc075 CV |
402 | gid = myself->gid; |
403 | username = cygheap->user.name (); | |
d551169a CV |
404 | for (int gidx = 0; (gr = internal_getgrent (gidx)); ++gidx) |
405 | if (gid == gr->gr_gid) | |
406 | { | |
407 | if (cnt < gidsetsize) | |
408 | grouplist[cnt] = gr->gr_gid; | |
409 | ++cnt; | |
410 | if (gidsetsize && cnt > gidsetsize) | |
411 | goto error; | |
412 | } | |
413 | else if (gr->gr_mem) | |
414 | for (int gi = 0; gr->gr_mem[gi]; ++gi) | |
415 | if (strcasematch (username, gr->gr_mem[gi])) | |
c4548fb4 CV |
416 | { |
417 | if (cnt < gidsetsize) | |
d551169a | 418 | grouplist[cnt] = gr->gr_gid; |
c4548fb4 CV |
419 | ++cnt; |
420 | if (gidsetsize && cnt > gidsetsize) | |
421 | goto error; | |
422 | } | |
d551169a | 423 | return cnt; |
4f2aac14 DD |
424 | |
425 | error: | |
f7632549 | 426 | set_errno (EINVAL); |
4f2aac14 | 427 | return -1; |
1fd5e000 CF |
428 | } |
429 | ||
38c77307 | 430 | extern "C" int |
57196405 CV |
431 | getgroups32 (int gidsetsize, __gid32_t *grouplist) |
432 | { | |
d6ffc075 | 433 | return internal_getgroups (gidsetsize, grouplist); |
57196405 CV |
434 | } |
435 | ||
38c77307 | 436 | extern "C" int |
de4e0d30 | 437 | getgroups (int gidsetsize, __gid16_t *grouplist) |
1fd5e000 | 438 | { |
57196405 CV |
439 | __gid32_t *grouplist32 = NULL; |
440 | ||
441 | if (gidsetsize < 0) | |
442 | { | |
443 | set_errno (EINVAL); | |
444 | return -1; | |
445 | } | |
446 | if (gidsetsize > 0 && grouplist) | |
447 | grouplist32 = (__gid32_t *) alloca (gidsetsize * sizeof (__gid32_t)); | |
448 | ||
d6ffc075 | 449 | int ret = internal_getgroups (gidsetsize, grouplist32); |
57196405 CV |
450 | |
451 | if (gidsetsize > 0 && grouplist) | |
452 | for (int i = 0; i < ret; ++ i) | |
453 | grouplist[i] = grouplist32[i]; | |
454 | ||
455 | return ret; | |
456 | } | |
457 | ||
38c77307 | 458 | extern "C" int |
b62b8d7c | 459 | initgroups32 (const char *name, __gid32_t gid) |
57196405 | 460 | { |
a76877e9 CV |
461 | int ret = -1; |
462 | ||
463 | cygheap->user.deimpersonate (); | |
464 | struct passwd *pw = internal_getpwnam (name); | |
465 | struct __group32 *gr = internal_getgrgid (gid); | |
466 | cygsid usersid, grpsid; | |
467 | if (!usersid.getfrompw (pw) || !grpsid.getfromgr (gr)) | |
468 | set_errno (EINVAL); | |
469 | else | |
68a3f0d3 | 470 | { |
a76877e9 CV |
471 | cygsidlist tmp_gsids (cygsidlist_auto, 12); |
472 | if (get_server_groups (tmp_gsids, usersid, pw)) | |
68a3f0d3 | 473 | { |
a76877e9 CV |
474 | tmp_gsids += grpsid; |
475 | cygsidlist new_gsids (cygsidlist_alloc, tmp_gsids.count ()); | |
476 | for (int i = 0; i < tmp_gsids.count (); i++) | |
477 | new_gsids.sids[i] = tmp_gsids.sids[i]; | |
478 | new_gsids.count (tmp_gsids.count ()); | |
479 | cygheap->user.groups.update_supp (new_gsids); | |
480 | ret = 0; | |
68a3f0d3 | 481 | } |
68a3f0d3 | 482 | } |
a76877e9 | 483 | cygheap->user.reimpersonate (); |
68a3f0d3 | 484 | syscall_printf ( "%d = initgroups (%s, %u)", ret, name, gid); |
96ab3848 | 485 | return ret; |
1fd5e000 CF |
486 | } |
487 | ||
38c77307 | 488 | extern "C" int |
b62b8d7c | 489 | initgroups (const char *name, __gid16_t gid) |
1fd5e000 | 490 | { |
5a8746b7 | 491 | return initgroups32 (name, gid16togid32(gid)); |
1fd5e000 | 492 | } |
5519d543 CV |
493 | |
494 | /* setgroups32: standards? */ | |
38c77307 | 495 | extern "C" int |
5519d543 CV |
496 | setgroups32 (int ngroups, const __gid32_t *grouplist) |
497 | { | |
b62b8d7c | 498 | syscall_printf ("setgroups32 (%d)", ngroups); |
5519d543 CV |
499 | if (ngroups < 0 || (ngroups > 0 && !grouplist)) |
500 | { | |
501 | set_errno (EINVAL); | |
502 | return -1; | |
503 | } | |
504 | ||
5519d543 CV |
505 | cygsidlist gsids (cygsidlist_alloc, ngroups); |
506 | struct __group32 *gr; | |
507 | ||
508 | if (ngroups && !gsids.sids) | |
509 | return -1; | |
510 | ||
511 | for (int gidx = 0; gidx < ngroups; ++gidx) | |
512 | { | |
b62b8d7c CV |
513 | if ((gr = internal_getgrgid (grouplist[gidx])) |
514 | && gsids.addfromgr (gr)) | |
515 | continue; | |
5519d543 CV |
516 | debug_printf ("No sid found for gid %d", grouplist[gidx]); |
517 | gsids.free_sids (); | |
518 | set_errno (EINVAL); | |
519 | return -1; | |
5519d543 CV |
520 | } |
521 | cygheap->user.groups.update_supp (gsids); | |
522 | return 0; | |
523 | } | |
524 | ||
38c77307 | 525 | extern "C" int |
5519d543 CV |
526 | setgroups (int ngroups, const __gid16_t *grouplist) |
527 | { | |
528 | __gid32_t *grouplist32 = NULL; | |
529 | ||
530 | if (ngroups > 0 && grouplist) | |
531 | { | |
532 | grouplist32 = (__gid32_t *) alloca (ngroups * sizeof (__gid32_t)); | |
533 | if (grouplist32 == NULL) | |
534 | return -1; | |
535 | for (int i = 0; i < ngroups; i++) | |
5bf785a0 | 536 | grouplist32[i] = grouplist[i]; |
5519d543 CV |
537 | } |
538 | return setgroups32 (ngroups, grouplist32); | |
5519d543 | 539 | } |