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e19101e08f
Due to certain assumptions made in the the cred:groupmember test it could result in false positives when run on specific distributions. This was solely a bug in the test case and not in the groupmember() function which the test case was validating. To prevent future false positives the test case has been rewritten to be both more rigerous and to make fewer assumptions about the system. Minor style cleanup was done to cr_groups_search() and groupmember() functions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
299 lines
8.6 KiB
C
299 lines
8.6 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*****************************************************************************
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* Solaris Porting LAyer Tests (SPLAT) Credential Tests.
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\*****************************************************************************/
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#include <sys/cred.h>
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#include <sys/random.h>
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#include "splat-internal.h"
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#define SPLAT_CRED_NAME "cred"
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#define SPLAT_CRED_DESC "Kernel Cred Tests"
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#define SPLAT_CRED_TEST1_ID 0x0e01
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#define SPLAT_CRED_TEST1_NAME "cred"
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#define SPLAT_CRED_TEST1_DESC "Task Credential Test"
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#define SPLAT_CRED_TEST2_ID 0x0e02
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#define SPLAT_CRED_TEST2_NAME "kcred"
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#define SPLAT_CRED_TEST2_DESC "Kernel Credential Test"
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#define SPLAT_CRED_TEST3_ID 0x0e03
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#define SPLAT_CRED_TEST3_NAME "groupmember"
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#define SPLAT_CRED_TEST3_DESC "Group Member Test"
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#define GROUP_STR_SIZE 128
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#define GROUP_STR_REDZONE 16
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static int
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splat_cred_test1(struct file *file, void *arg)
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{
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char str[GROUP_STR_SIZE];
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uid_t uid, ruid, suid;
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gid_t gid, rgid, sgid, *groups;
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int ngroups, i, count = 0;
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uid = crgetuid(CRED());
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ruid = crgetruid(CRED());
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suid = crgetsuid(CRED());
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gid = crgetgid(CRED());
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rgid = crgetrgid(CRED());
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sgid = crgetsgid(CRED());
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crhold(CRED());
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ngroups = crgetngroups(CRED());
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groups = crgetgroups(CRED());
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memset(str, 0, GROUP_STR_SIZE);
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for (i = 0; i < ngroups; i++) {
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count += sprintf(str + count, "%d ", groups[i]);
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if (count > (GROUP_STR_SIZE - GROUP_STR_REDZONE)) {
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"Failed too many group entries for temp "
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"buffer: %d, %s\n", ngroups, str);
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return -ENOSPC;
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}
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}
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crfree(CRED());
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"uid: %d ruid: %d suid: %d "
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"gid: %d rgid: %d sgid: %d\n",
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uid, ruid, suid, gid, rgid, sgid);
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"ngroups: %d groups: %s\n", ngroups, str);
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if (uid || ruid || suid || gid || rgid || sgid) {
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"Failed expected all uids+gids to be %d\n", 0);
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return -EIDRM;
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}
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if (ngroups > NGROUPS_MAX) {
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"Failed ngroups must not exceed NGROUPS_MAX: "
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"%d > %d\n", ngroups, NGROUPS_MAX);
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return -EIDRM;
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}
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splat_vprint(file, SPLAT_CRED_TEST1_NAME,
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"Success sane CRED(): %d\n", 0);
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return 0;
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} /* splat_cred_test1() */
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static int
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splat_cred_test2(struct file *file, void *arg)
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{
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char str[GROUP_STR_SIZE];
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uid_t uid, ruid, suid;
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gid_t gid, rgid, sgid, *groups;
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int ngroups, i, count = 0;
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uid = crgetuid(kcred);
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ruid = crgetruid(kcred);
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suid = crgetsuid(kcred);
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gid = crgetgid(kcred);
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rgid = crgetrgid(kcred);
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sgid = crgetsgid(kcred);
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crhold(kcred);
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ngroups = crgetngroups(kcred);
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groups = crgetgroups(kcred);
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memset(str, 0, GROUP_STR_SIZE);
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for (i = 0; i < ngroups; i++) {
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count += sprintf(str + count, "%d ", groups[i]);
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if (count > (GROUP_STR_SIZE - GROUP_STR_REDZONE)) {
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"Failed too many group entries for temp "
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"buffer: %d, %s\n", ngroups, str);
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return -ENOSPC;
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}
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}
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crfree(kcred);
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"uid: %d ruid: %d suid: %d "
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"gid: %d rgid: %d sgid: %d\n",
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uid, ruid, suid, gid, rgid, sgid);
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"ngroups: %d groups: %s\n", ngroups, str);
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if (uid || ruid || suid || gid || rgid || sgid) {
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"Failed expected all uids+gids to be %d\n", 0);
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return -EIDRM;
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}
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if (ngroups > NGROUPS_MAX) {
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"Failed ngroups must not exceed NGROUPS_MAX: "
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"%d > %d\n", ngroups, NGROUPS_MAX);
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return -EIDRM;
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}
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splat_vprint(file, SPLAT_CRED_TEST2_NAME,
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"Success sane kcred: %d\n", 0);
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return 0;
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} /* splat_cred_test2() */
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/*
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* Verify the groupmember() works correctly by constructing an interesting
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* CRED() and checking that the expected gids are part of it.
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*/
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static int
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splat_cred_test3(struct file *file, void *arg)
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{
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gid_t known_gid, missing_gid, tmp_gid;
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unsigned char rnd;
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struct group_info *gi;
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int i, rc;
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get_random_bytes((void *)&rnd, 1);
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known_gid = (rnd > 0) ? rnd : 1;
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missing_gid = 0;
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/*
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* Create an interesting known set of gids for test purposes. The
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* gids are pseudo randomly selected are will be in the range of
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* 1:(NGROUPS_MAX-1). Gid 0 is explicitly avoided so we can reliably
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* test for its absence in the test cases.
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*/
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gi = groups_alloc(NGROUPS_SMALL);
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if (gi == NULL) {
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed create "
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"group_info for known gids: %d\n", -ENOMEM);
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rc = -ENOMEM;
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goto show_groups;
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}
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for (i = 0, tmp_gid = known_gid; i < NGROUPS_SMALL; i++) {
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Adding gid %d "
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"to current CRED() (%d/%d)\n", tmp_gid, i, gi->ngroups);
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#ifdef HAVE_KUIDGID_T
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GROUP_AT(gi, i) = make_kgid(current_user_ns(), tmp_gid);
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#else
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GROUP_AT(gi, i) = tmp_gid;
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#endif /* HAVE_KUIDGID_T */
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tmp_gid = ((tmp_gid * 17) % (NGROUPS_MAX - 1)) + 1;
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}
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/* Set the new groups in the CRED() and release our reference. */
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rc = set_current_groups(gi);
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put_group_info(gi);
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if (rc) {
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed to add "
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"gid %d to current group: %d\n", known_gid, rc);
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goto show_groups;
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}
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/* Verify groupmember() finds the known_gid in the CRED() */
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rc = groupmember(known_gid, CRED());
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if (!rc) {
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed to find "
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"known gid %d in CRED()'s groups.\n", known_gid);
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rc = -EIDRM;
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goto show_groups;
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}
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/* Verify groupmember() does NOT finds the missing gid in the CRED() */
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rc = groupmember(missing_gid, CRED());
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if (rc) {
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed missing "
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"gid %d was found in CRED()'s groups.\n", missing_gid);
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rc = -EIDRM;
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goto show_groups;
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}
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Success groupmember() "
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"correctly detects expected gids in CRED(): %d\n", rc);
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show_groups:
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if (rc) {
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int i, grps = crgetngroups(CRED());
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splat_vprint(file, SPLAT_CRED_TEST3_NAME, "%d groups: ", grps);
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for (i = 0; i < grps; i++)
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splat_print(file, "%d ", crgetgroups(CRED())[i]);
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splat_print(file, "%s", "\n");
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}
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return (rc);
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} /* splat_cred_test3() */
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splat_subsystem_t *
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splat_cred_init(void)
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{
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splat_subsystem_t *sub;
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sub = kmalloc(sizeof(*sub), GFP_KERNEL);
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if (sub == NULL)
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return NULL;
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memset(sub, 0, sizeof(*sub));
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strncpy(sub->desc.name, SPLAT_CRED_NAME, SPLAT_NAME_SIZE);
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strncpy(sub->desc.desc, SPLAT_CRED_DESC, SPLAT_DESC_SIZE);
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INIT_LIST_HEAD(&sub->subsystem_list);
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INIT_LIST_HEAD(&sub->test_list);
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spin_lock_init(&sub->test_lock);
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sub->desc.id = SPLAT_SUBSYSTEM_CRED;
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SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST1_NAME, SPLAT_CRED_TEST1_DESC,
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SPLAT_CRED_TEST1_ID, splat_cred_test1);
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SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST2_NAME, SPLAT_CRED_TEST2_DESC,
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SPLAT_CRED_TEST2_ID, splat_cred_test2);
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SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST3_NAME, SPLAT_CRED_TEST3_DESC,
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SPLAT_CRED_TEST3_ID, splat_cred_test3);
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return sub;
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} /* splat_cred_init() */
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void
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splat_cred_fini(splat_subsystem_t *sub)
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{
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ASSERT(sub);
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SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST3_ID);
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SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST2_ID);
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SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST1_ID);
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kfree(sub);
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} /* splat_cred_fini() */
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int
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splat_cred_id(void)
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{
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return SPLAT_SUBSYSTEM_CRED;
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} /* splat_cred_id() */
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