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 <afsconfig.h>
19 #include "../afs/param.h"
23 #include "../afs/sysincludes.h"
24 #include "../afs/afsincludes.h"
25 #include "../afs/afs_stats.h" /* statistics */
27 #define NOCRED ((struct ucred *) -1)
28 #define NOUID ((uid_t) -1)
29 #define NOGID ((gid_t) -1)
47 Afs_xsetgroups(p, args, retval)
55 AFS_STATCNT(afs_xsetgroups);
58 /* code = afs_InitReq(&treq, u.u_cred); */
59 code = afs_InitReq(&treq, curproc->p_cred->pc_ucred);
61 if (code) return code;
63 code = setgroups(p, args, retval);
64 /* Note that if there is a pag already in the new groups we don't
65 * overwrite it with the old pag.
67 if (PagInCred(curproc->p_cred->pc_ucred) == NOPAG) {
68 if (((treq.uid >> 24) & 0xff) == 'A') {
70 /* we've already done a setpag, so now we redo it */
71 AddPag(p, treq.uid, &p->p_rcred);
80 setpag(proc, cred, pagvalue, newpag, change_parent)
85 afs_uint32 change_parent;
87 gid_t gidset[NGROUPS];
92 ngroups = afs_getgroups(*cred, NGROUPS, gidset);
93 if (afs_get_pag_from_groups(gidset[0], gidset[1]) == NOPAG) {
94 /* We will have to shift grouplist to make room for pag */
95 if (ngroups + 2 > NGROUPS) {
98 for (j = ngroups -1; j >= 0; j--) {
99 gidset[j+2] = gidset[j];
103 *newpag = (pagvalue == -1 ? genpag(): pagvalue);
104 afs_get_groups_from_pag(*newpag, &gidset[0], &gidset[1]);
105 code = afs_setgroups(proc, cred, ngroups, gidset, change_parent);
116 int ngrps, savengrps;
119 AFS_STATCNT(afs_getgroups);
120 savengrps = ngrps = MIN(ngroups, cred->cr_ngroups);
121 gp = cred->cr_groups;
140 struct ucred *newcr, *cr;
142 AFS_STATCNT(afs_setgroups);
144 * The real setgroups() call does this, so maybe we should too.
147 if (ngroups > NGROUPS)
150 if (!change_parent) {
155 newcr->cr_ngroups = ngroups;
156 gp = newcr->cr_groups;
159 if (!change_parent) {
160 substitute_real_creds(proc, NOUID, NOUID, NOGID, NOGID, newcr);