2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
14 * Afs_xsetgroups (syscall)
18 #include "../afs/param.h"
19 #include "../afs/sysincludes.h"
20 #include "../afs/afsincludes.h"
21 #include "../afs/afs_stats.h" /* statistics */
23 #define NOCRED ((struct ucred *) -1)
24 #define NOUID ((uid_t) -1)
25 #define NOGID ((gid_t) -1)
43 Afs_xsetgroups(p, args, retval)
51 AFS_STATCNT(afs_xsetgroups);
54 /* code = afs_InitReq(&treq, u.u_cred); */
55 code = afs_InitReq(&treq, curproc->p_cred->pc_ucred);
57 if (code) return code;
59 code = setgroups(p, args, retval);
60 /* Note that if there is a pag already in the new groups we don't
61 * overwrite it with the old pag.
63 if (PagInCred(curproc->p_cred->pc_ucred) == NOPAG) {
64 if (((treq.uid >> 24) & 0xff) == 'A') {
66 /* we've already done a setpag, so now we redo it */
67 AddPag(p, treq.uid, &p->p_rcred);
76 setpag(proc, cred, pagvalue, newpag, change_parent)
81 afs_uint32 change_parent;
83 gid_t gidset[NGROUPS];
88 ngroups = afs_getgroups(*cred, NGROUPS, gidset);
89 if (afs_get_pag_from_groups(gidset[0], gidset[1]) == NOPAG) {
90 /* We will have to shift grouplist to make room for pag */
91 if (ngroups + 2 > NGROUPS) {
94 for (j = ngroups -1; j >= 0; j--) {
95 gidset[j+2] = gidset[j];
99 *newpag = (pagvalue == -1 ? genpag(): pagvalue);
100 afs_get_groups_from_pag(*newpag, &gidset[0], &gidset[1]);
101 code = afs_setgroups(proc, cred, ngroups, gidset, change_parent);
112 int ngrps, savengrps;
115 AFS_STATCNT(afs_getgroups);
116 savengrps = ngrps = MIN(ngroups, cred->cr_ngroups);
117 gp = cred->cr_groups;
136 struct ucred *newcr, *cr;
138 AFS_STATCNT(afs_setgroups);
140 * The real setgroups() call does this, so maybe we should too.
143 if (ngroups > NGROUPS)
146 if (!change_parent) {
151 newcr->cr_ngroups = ngroups;
152 gp = newcr->cr_groups;
155 if (!change_parent) {
156 substitute_real_creds(proc, NOUID, NOUID, NOGID, NOGID, newcr);