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/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************
* Solaris Porting LAyer Tests (SPLAT) Credential Tests.
\*****************************************************************************/
#include <sys/cred.h>
#include <sys/random.h>
#include "splat-internal.h"
#define SPLAT_CRED_NAME "cred"
#define SPLAT_CRED_DESC "Kernel Cred Tests"
#define SPLAT_CRED_TEST1_ID 0x0e01
#define SPLAT_CRED_TEST1_NAME "cred"
#define SPLAT_CRED_TEST1_DESC "Task Credential Test"
#define SPLAT_CRED_TEST2_ID 0x0e02
#define SPLAT_CRED_TEST2_NAME "kcred"
#define SPLAT_CRED_TEST2_DESC "Kernel Credential Test"
#define SPLAT_CRED_TEST3_ID 0x0e03
#define SPLAT_CRED_TEST3_NAME "groupmember"
#define SPLAT_CRED_TEST3_DESC "Group Member Test"
#define GROUP_STR_SIZE 128
#define GROUP_STR_REDZONE 16
static int
splat_cred_test1(struct file *file, void *arg)
{
char str[GROUP_STR_SIZE];
uid_t uid, ruid, suid;
gid_t gid, rgid, sgid, *groups;
int ngroups, i, count = 0;
cred_t *cr = CRED();
uid = crgetuid(cr);
ruid = crgetruid(cr);
suid = crgetsuid(cr);
gid = crgetgid(cr);
rgid = crgetrgid(cr);
sgid = crgetsgid(cr);
ngroups = crgetngroups(cr);
groups = crgetgroups(cr);
memset(str, 0, GROUP_STR_SIZE);
for (i = 0; i < ngroups; i++) {
count += sprintf(str + count, "%d ", groups[i]);
if (count > (GROUP_STR_SIZE - GROUP_STR_REDZONE)) {
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"Failed too many group entries for temp "
"buffer: %d, %s\n", ngroups, str);
return -ENOSPC;
}
}
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"uid: %d ruid: %d suid: %d "
"gid: %d rgid: %d sgid: %d\n",
uid, ruid, suid, gid, rgid, sgid);
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"ngroups: %d groups: %s\n", ngroups, str);
if (uid || ruid || suid || gid || rgid || sgid) {
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"Failed expected all uids+gids to be %d\n", 0);
return -EIDRM;
}
if (ngroups > NGROUPS_MAX) {
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"Failed ngroups must not exceed NGROUPS_MAX: "
"%d > %d\n", ngroups, NGROUPS_MAX);
return -EIDRM;
}
splat_vprint(file, SPLAT_CRED_TEST1_NAME,
"Success sane CRED(): %d\n", 0);
return 0;
} /* splat_cred_test1() */
static int
splat_cred_test2(struct file *file, void *arg)
{
char str[GROUP_STR_SIZE];
uid_t uid, ruid, suid;
gid_t gid, rgid, sgid, *groups;
int ngroups, i, count = 0;
crhold(kcred);
uid = crgetuid(kcred);
ruid = crgetruid(kcred);
suid = crgetsuid(kcred);
gid = crgetgid(kcred);
rgid = crgetrgid(kcred);
sgid = crgetsgid(kcred);
ngroups = crgetngroups(kcred);
groups = crgetgroups(kcred);
memset(str, 0, GROUP_STR_SIZE);
for (i = 0; i < ngroups; i++) {
count += sprintf(str + count, "%d ", groups[i]);
if (count > (GROUP_STR_SIZE - GROUP_STR_REDZONE)) {
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"Failed too many group entries for temp "
"buffer: %d, %s\n", ngroups, str);
crfree(kcred);
return -ENOSPC;
}
}
crfree(kcred);
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"uid: %d ruid: %d suid: %d "
"gid: %d rgid: %d sgid: %d\n",
uid, ruid, suid, gid, rgid, sgid);
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"ngroups: %d groups: %s\n", ngroups, str);
if (uid || ruid || suid || gid || rgid || sgid) {
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"Failed expected all uids+gids to be %d\n", 0);
return -EIDRM;
}
if (ngroups > NGROUPS_MAX) {
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"Failed ngroups must not exceed NGROUPS_MAX: "
"%d > %d\n", ngroups, NGROUPS_MAX);
return -EIDRM;
}
splat_vprint(file, SPLAT_CRED_TEST2_NAME,
"Success sane kcred: %d\n", 0);
return 0;
} /* splat_cred_test2() */
#define SPLAT_NGROUPS 32
/*
* Verify the groupmember() works correctly by constructing an interesting
* CRED() and checking that the expected gids are part of it.
*/
static int
splat_cred_test3(struct file *file, void *arg)
{
gid_t known_gid, missing_gid, tmp_gid;
unsigned char rnd;
struct group_info *gi;
int i, rc;
get_random_bytes((void *)&rnd, 1);
known_gid = (rnd > 0) ? rnd : 1;
missing_gid = 0;
/*
* Create an interesting known set of gids for test purposes. The
* gids are pseudo randomly selected are will be in the range of
* 1:(NGROUPS_MAX-1). Gid 0 is explicitly avoided so we can reliably
* test for its absence in the test cases.
*/
gi = groups_alloc(SPLAT_NGROUPS);
if (gi == NULL) {
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed create "
"group_info for known gids: %d\n", -ENOMEM);
rc = -ENOMEM;
goto show_groups;
}
for (i = 0, tmp_gid = known_gid; i < SPLAT_NGROUPS; i++) {
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Adding gid %d "
"to current CRED() (%d/%d)\n", tmp_gid, i, gi->ngroups);
#ifdef HAVE_KUIDGID_T
GROUP_AT(gi, i) = make_kgid(current_user_ns(), tmp_gid);
#else
GROUP_AT(gi, i) = tmp_gid;
#endif /* HAVE_KUIDGID_T */
tmp_gid = ((tmp_gid * 17) % (NGROUPS_MAX - 1)) + 1;
}
/* Set the new groups in the CRED() and release our reference. */
rc = set_current_groups(gi);
put_group_info(gi);
if (rc) {
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed to add "
"gid %d to current group: %d\n", known_gid, rc);
goto show_groups;
}
/* Verify groupmember() finds the known_gid in the CRED() */
rc = groupmember(known_gid, CRED());
if (!rc) {
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed to find "
"known gid %d in CRED()'s groups.\n", known_gid);
rc = -EIDRM;
goto show_groups;
}
/* Verify groupmember() does NOT finds the missing gid in the CRED() */
rc = groupmember(missing_gid, CRED());
if (rc) {
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Failed missing "
"gid %d was found in CRED()'s groups.\n", missing_gid);
rc = -EIDRM;
goto show_groups;
}
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "Success groupmember() "
"correctly detects expected gids in CRED(): %d\n", rc);
show_groups:
if (rc) {
int i, grps = crgetngroups(CRED());
splat_vprint(file, SPLAT_CRED_TEST3_NAME, "%d groups: ", grps);
for (i = 0; i < grps; i++)
splat_print(file, "%d ", crgetgroups(CRED())[i]);
splat_print(file, "%s", "\n");
}
return (rc);
} /* splat_cred_test3() */
splat_subsystem_t *
splat_cred_init(void)
{
splat_subsystem_t *sub;
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
if (sub == NULL)
return NULL;
memset(sub, 0, sizeof(*sub));
strncpy(sub->desc.name, SPLAT_CRED_NAME, SPLAT_NAME_SIZE);
strncpy(sub->desc.desc, SPLAT_CRED_DESC, SPLAT_DESC_SIZE);
INIT_LIST_HEAD(&sub->subsystem_list);
INIT_LIST_HEAD(&sub->test_list);
spin_lock_init(&sub->test_lock);
sub->desc.id = SPLAT_SUBSYSTEM_CRED;
SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST1_NAME, SPLAT_CRED_TEST1_DESC,
SPLAT_CRED_TEST1_ID, splat_cred_test1);
SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST2_NAME, SPLAT_CRED_TEST2_DESC,
SPLAT_CRED_TEST2_ID, splat_cred_test2);
SPLAT_TEST_INIT(sub, SPLAT_CRED_TEST3_NAME, SPLAT_CRED_TEST3_DESC,
SPLAT_CRED_TEST3_ID, splat_cred_test3);
return sub;
} /* splat_cred_init() */
void
splat_cred_fini(splat_subsystem_t *sub)
{
ASSERT(sub);
SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST3_ID);
SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST2_ID);
SPLAT_TEST_FINI(sub, SPLAT_CRED_TEST1_ID);
kfree(sub);
} /* splat_cred_fini() */
int
splat_cred_id(void)
{
return SPLAT_SUBSYSTEM_CRED;
} /* splat_cred_id() */
|