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zfs/module/splat/splat-generic.c

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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) Generic Tests.
\*****************************************************************************/
#include <sys/sunddi.h>
#include <linux/math64_compat.h>
#include "splat-internal.h"
#define SPLAT_GENERIC_NAME "generic"
#define SPLAT_GENERIC_DESC "Kernel Generic Tests"
#define SPLAT_GENERIC_TEST1_ID 0x0d01
#define SPLAT_GENERIC_TEST1_NAME "ddi_strtoul"
#define SPLAT_GENERIC_TEST1_DESC "ddi_strtoul Test"
#define SPLAT_GENERIC_TEST2_ID 0x0d02
#define SPLAT_GENERIC_TEST2_NAME "ddi_strtol"
#define SPLAT_GENERIC_TEST2_DESC "ddi_strtol Test"
#define SPLAT_GENERIC_TEST3_ID 0x0d03
#define SPLAT_GENERIC_TEST3_NAME "ddi_strtoull"
#define SPLAT_GENERIC_TEST3_DESC "ddi_strtoull Test"
#define SPLAT_GENERIC_TEST4_ID 0x0d04
#define SPLAT_GENERIC_TEST4_NAME "ddi_strtoll"
#define SPLAT_GENERIC_TEST4_DESC "ddi_strtoll Test"
# define SPLAT_GENERIC_TEST5_ID 0x0d05
# define SPLAT_GENERIC_TEST5_NAME "udivdi3"
# define SPLAT_GENERIC_TEST5_DESC "Unsigned Div-64 Test"
# define SPLAT_GENERIC_TEST6_ID 0x0d06
# define SPLAT_GENERIC_TEST6_NAME "divdi3"
# define SPLAT_GENERIC_TEST6_DESC "Signed Div-64 Test"
#define STR_POS "123456789"
#define STR_NEG "-123456789"
#define STR_BASE "0xabcdef"
#define STR_RANGE_MAX "10000000000000000"
#define STR_RANGE_MIN "-10000000000000000"
#define STR_INVAL1 "12345U"
#define STR_INVAL2 "invald"
#define VAL_POS 123456789
#define VAL_NEG -123456789
#define VAL_BASE 0xabcdef
#define VAL_INVAL1 12345U
#define define_generic_msg_strtox(type, valtype) \
static void \
generic_msg_strto##type(struct file *file, char *msg, int rc, int *err, \
const char *s, valtype d, char *endptr) \
{ \
splat_vprint(file, SPLAT_GENERIC_TEST1_NAME, \
"%s (%d) %s: %s == %lld, 0x%p\n", \
rc ? "Fail" : "Pass", *err, msg, s, \
(unsigned long long)d, endptr); \
*err = rc; \
}
define_generic_msg_strtox(ul, unsigned long);
define_generic_msg_strtox(l, long);
define_generic_msg_strtox(ull, unsigned long long);
define_generic_msg_strtox(ll, long long);
#define define_splat_generic_test_strtox(type, valtype) \
static int \
splat_generic_test_strto##type(struct file *file, void *arg) \
{ \
int rc, rc1, rc2, rc3, rc4, rc5, rc6, rc7; \
char str[20], *endptr; \
valtype r; \
\
/* Positive value: expect success */ \
r = 0; \
rc = 1; \
endptr = NULL; \
rc1 = ddi_strto##type(STR_POS, &endptr, 10, &r); \
if (rc1 == 0 && r == VAL_POS && endptr && *endptr == '\0') \
rc = 0; \
\
generic_msg_strto##type(file, "positive", rc , &rc1, \
STR_POS, r, endptr); \
\
/* Negative value: expect success */ \
r = 0; \
rc = 1; \
endptr = NULL; \
strcpy(str, STR_NEG); \
rc2 = ddi_strto##type(str, &endptr, 10, &r); \
if (#type[0] == 'u') { \
if (rc2 == 0 && r == 0 && endptr == str) \
rc = 0; \
} else { \
if (rc2 == 0 && r == VAL_NEG && \
endptr && *endptr == '\0') \
rc = 0; \
} \
\
generic_msg_strto##type(file, "negative", rc, &rc2, \
STR_NEG, r, endptr); \
\
/* Non decimal base: expect sucess */ \
r = 0; \
rc = 1; \
endptr = NULL; \
rc3 = ddi_strto##type(STR_BASE, &endptr, 0, &r); \
if (rc3 == 0 && r == VAL_BASE && endptr && *endptr == '\0') \
rc = 0; \
\
generic_msg_strto##type(file, "base", rc, &rc3, \
STR_BASE, r, endptr); \
\
/* Max out of range: failure expected, r unchanged */ \
r = 0; \
rc = 1; \
endptr = NULL; \
rc4 = ddi_strto##type(STR_RANGE_MAX, &endptr, 16, &r); \
if (rc4 == ERANGE && r == 0 && endptr == NULL) \
rc = 0; \
\
generic_msg_strto##type(file, "max", rc, &rc4, \
STR_RANGE_MAX, r, endptr); \
\
/* Min out of range: failure expected, r unchanged */ \
r = 0; \
rc = 1; \
endptr = NULL; \
strcpy(str, STR_RANGE_MIN); \
rc5 = ddi_strto##type(str, &endptr, 16, &r); \
if (#type[0] == 'u') { \
if (rc5 == 0 && r == 0 && endptr == str) \
rc = 0; \
} else { \
if (rc5 == ERANGE && r == 0 && endptr == NULL) \
rc = 0; \
} \
\
generic_msg_strto##type(file, "min", rc, &rc5, \
STR_RANGE_MIN, r, endptr); \
\
/* Invalid string: success expected, endptr == 'U' */ \
r = 0; \
rc = 1; \
endptr = NULL; \
rc6 = ddi_strto##type(STR_INVAL1, &endptr, 10, &r); \
if (rc6 == 0 && r == VAL_INVAL1 && endptr && *endptr == 'U') \
rc = 0; \
\
generic_msg_strto##type(file, "invalid", rc, &rc6, \
STR_INVAL1, r, endptr); \
\
/* Invalid string: failure expected, endptr == str */ \
r = 0; \
rc = 1; \
endptr = NULL; \
strcpy(str, STR_INVAL2); \
rc7 = ddi_strto##type(str, &endptr, 10, &r); \
if (rc7 == 0 && r == 0 && endptr == str) \
rc = 0; \
\
generic_msg_strto##type(file, "invalid", rc, &rc7, \
STR_INVAL2, r, endptr); \
\
return (rc1 || rc2 || rc3 || rc4 || rc5 || rc6 || rc7) ? \
-EINVAL : 0; \
}
define_splat_generic_test_strtox(ul, unsigned long);
define_splat_generic_test_strtox(l, long);
define_splat_generic_test_strtox(ull, unsigned long long);
define_splat_generic_test_strtox(ll, long long);
/*
* The entries in the table are used in all combinations and the
* return value is checked to ensure it is range. On 32-bit
* systems __udivdi3 will be invoked for the 64-bit division.
* On 64-bit system the native 64-bit divide will be used so
* __udivdi3 isn't used but we might as well stil run the test.
*/
static int
splat_generic_test_udivdi3(struct file *file, void *arg)
{
const uint64_t tabu[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 1000, 2003,
32765, 32766, 32767, 32768, 32769, 32760,
65533, 65534, 65535, 65536, 65537, 65538,
0x7ffffffeULL, 0x7fffffffULL, 0x80000000ULL, 0x80000001ULL,
0x7000000000000000ULL, 0x7000000080000000ULL, 0x7000000080000001ULL,
0x7fffffffffffffffULL, 0x7fffffff8fffffffULL, 0x7fffffff8ffffff1ULL,
0x7fffffff00000000ULL, 0x7fffffff80000000ULL, 0x7fffffff00000001ULL,
0x8000000000000000ULL, 0x8000000080000000ULL, 0x8000000080000001ULL,
0xc000000000000000ULL, 0xc000000080000000ULL, 0xc000000080000001ULL,
0xfffffffffffffffdULL, 0xfffffffffffffffeULL, 0xffffffffffffffffULL,
};
uint64_t uu, vu, qu, ru;
int n, i, j, errors = 0;
splat_vprint(file, SPLAT_GENERIC_TEST5_NAME, "%s",
"Testing unsigned 64-bit division.\n");
n = sizeof(tabu) / sizeof(tabu[0]);
for (i = 0; i < n; i++) {
for (j = 1; j < n; j++) {
uu = tabu[i];
vu = tabu[j];
qu = uu / vu; /* __udivdi3 */
ru = uu - qu * vu;
if (qu > uu || ru >= vu) {
splat_vprint(file, SPLAT_GENERIC_TEST5_NAME,
"%016llx/%016llx != %016llx rem %016llx\n",
uu, vu, qu, ru);
errors++;
}
}
}
if (errors) {
splat_vprint(file, SPLAT_GENERIC_TEST5_NAME,
"Failed %d/%d tests\n", errors, n * (n - 1));
return -ERANGE;
}
splat_vprint(file, SPLAT_GENERIC_TEST5_NAME,
"Passed all %d tests\n", n * (n - 1));
return 0;
}
/*
* The entries the table are used in all combinations, with + and - signs
* preceding them. The return value is checked to ensure it is range.
* On 32-bit systems __divdi3 will be invoked for the 64-bit division.
* On 64-bit system the native 64-bit divide will be used so __divdi3
* isn't used but we might as well stil run the test.
*/
static int
splat_generic_test_divdi3(struct file *file, void *arg)
{
const int64_t tabs[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 1000, 2003,
32765, 32766, 32767, 32768, 32769, 32760,
65533, 65534, 65535, 65536, 65537, 65538,
0x7ffffffeLL, 0x7fffffffLL, 0x80000000LL, 0x80000001LL,
0x7000000000000000LL, 0x7000000080000000LL, 0x7000000080000001LL,
0x7fffffffffffffffLL, 0x7fffffff8fffffffLL, 0x7fffffff8ffffff1LL,
0x7fffffff00000000LL, 0x7fffffff80000000LL, 0x7fffffff00000001LL,
0x0123456789abcdefLL, 0x00000000abcdef01LL, 0x0000000012345678LL,
#if BITS_PER_LONG == 32
0x8000000000000000LL, 0x8000000080000000LL, 0x8000000080000001LL,
#endif
};
int64_t u, v, q, r;
int n, i, j, k, errors = 0;
splat_vprint(file, SPLAT_GENERIC_TEST6_NAME, "%s",
"Testing signed 64-bit division.\n");
n = sizeof(tabs) / sizeof(tabs[0]);
for (i = 0; i < n; i++) {
for (j = 1; j < n; j++) {
for (k = 0; k <= 3; k++) {
u = (k & 1) ? -tabs[i] : tabs[i];
v = (k >= 2) ? -tabs[j] : tabs[j];
q = u / v; /* __divdi3 */
r = u - q * v;
if (abs64(q) > abs64(u) ||
abs64(r) >= abs64(v) ||
(r != 0 && (r ^ u) < 0)) {
splat_vprint(file,
SPLAT_GENERIC_TEST6_NAME,
"%016llx/%016llx != %016llx "
"rem %016llx\n", u, v, q, r);
errors++;
}
}
}
}
if (errors) {
splat_vprint(file, SPLAT_GENERIC_TEST6_NAME,
"Failed %d/%d tests\n", errors, n * (n - 1));
return -ERANGE;
}
splat_vprint(file, SPLAT_GENERIC_TEST6_NAME,
"Passed all %d tests\n", n * (n - 1));
return 0;
}
splat_subsystem_t *
splat_generic_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_GENERIC_NAME, SPLAT_NAME_SIZE);
strncpy(sub->desc.desc, SPLAT_GENERIC_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_GENERIC;
splat_test_init(sub, SPLAT_GENERIC_TEST1_NAME, SPLAT_GENERIC_TEST1_DESC,
SPLAT_GENERIC_TEST1_ID, splat_generic_test_strtoul);
splat_test_init(sub, SPLAT_GENERIC_TEST2_NAME, SPLAT_GENERIC_TEST2_DESC,
SPLAT_GENERIC_TEST2_ID, splat_generic_test_strtol);
splat_test_init(sub, SPLAT_GENERIC_TEST3_NAME, SPLAT_GENERIC_TEST3_DESC,
SPLAT_GENERIC_TEST3_ID, splat_generic_test_strtoull);
splat_test_init(sub, SPLAT_GENERIC_TEST4_NAME, SPLAT_GENERIC_TEST4_DESC,
SPLAT_GENERIC_TEST4_ID, splat_generic_test_strtoll);
splat_test_init(sub, SPLAT_GENERIC_TEST5_NAME, SPLAT_GENERIC_TEST5_DESC,
SPLAT_GENERIC_TEST5_ID, splat_generic_test_udivdi3);
splat_test_init(sub, SPLAT_GENERIC_TEST6_NAME, SPLAT_GENERIC_TEST6_DESC,
SPLAT_GENERIC_TEST6_ID, splat_generic_test_divdi3);
return sub;
}
void
splat_generic_fini(splat_subsystem_t *sub)
{
ASSERT(sub);
splat_test_fini(sub, SPLAT_GENERIC_TEST6_ID);
splat_test_fini(sub, SPLAT_GENERIC_TEST5_ID);
splat_test_fini(sub, SPLAT_GENERIC_TEST4_ID);
splat_test_fini(sub, SPLAT_GENERIC_TEST3_ID);
splat_test_fini(sub, SPLAT_GENERIC_TEST2_ID);
splat_test_fini(sub, SPLAT_GENERIC_TEST1_ID);
kfree(sub);
}
int
splat_generic_id(void)
{
return SPLAT_SUBSYSTEM_GENERIC;
}
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