mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-03 04:01:43 +08:00
1e1ad714ee
So tests can specify a list of environment variables. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
411 lines
8.7 KiB
C
411 lines
8.7 KiB
C
/* Check GLIBC_TUNABLES parsing.
|
|
Copyright (C) 2023-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <array_length.h>
|
|
/* The test uses the tunable_list size, which is only exported for
|
|
ld.so. This will result in a copy of tunable_list, which is ununsed by
|
|
the test itself. */
|
|
#define TUNABLES_INTERNAL 1
|
|
#include <dl-tunables.h>
|
|
#include <getopt.h>
|
|
#include <intprops.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <support/capture_subprocess.h>
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
|
|
static int restart;
|
|
#define CMDLINE_OPTIONS \
|
|
{ "restart", no_argument, &restart, 1 },
|
|
|
|
static struct test_t
|
|
{
|
|
const char *name;
|
|
const char *value;
|
|
int32_t expected_malloc_check;
|
|
size_t expected_mmap_threshold;
|
|
int32_t expected_perturb;
|
|
} tests[] =
|
|
{
|
|
/* Expected tunable format. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2",
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096",
|
|
2,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.mmap_threshold=-1",
|
|
0,
|
|
SIZE_MAX,
|
|
0,
|
|
},
|
|
/* Empty tunable are ignored. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2::glibc.malloc.mmap_threshold=4096",
|
|
2,
|
|
4096,
|
|
0,
|
|
},
|
|
/* As well empty values. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
/* Tunable are processed from left to right, so last one is the one set. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=1:glibc.malloc.check=2",
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=1:glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096",
|
|
2,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096:glibc.malloc.check=1",
|
|
1,
|
|
4096,
|
|
0,
|
|
},
|
|
/* 0x800 is larger than tunable maxval (0xff), so the tunable is unchanged. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.perturb=0x800",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.perturb=0x55",
|
|
0,
|
|
0,
|
|
0x55,
|
|
},
|
|
/* Out of range values are just ignored. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.perturb=0x800:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
/* Invalid keys are ignored. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
":glibc.malloc.garbage=2:glibc.malloc.check=1",
|
|
1,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.perturb=0x800:not_valid.malloc.check=2:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.not_valid.check=2:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"not_valid.malloc.check=2:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
/* Invalid subkeys are ignored. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.garbage=2:glibc.maoc.mmap_threshold=4096:glibc.malloc.check=2",
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=4:glibc.malloc.garbage=2:glibc.maoc.mmap_threshold=4096",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"not_valid.malloc.check=2",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.not_valid.check=2",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
/* An ill-formatted tunable in the for key=key=value will considere the
|
|
value as 'key=value' (which can not be parsed as an integer). */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.mmap_threshold=glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
/* Ill-formatted tunables string is not parsed. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.mmap_threshold=glibc.malloc.mmap_threshold=4096:glibc.malloc.check=2",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2=2",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2=2:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2=2:glibc.malloc.check=2",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096=4096",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096=4096",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
/* Invalid numbers are ignored. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=abc:glibc.malloc.mmap_threshold=4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=abc",
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
/* SIZE_MAX + 1 */
|
|
"glibc.malloc.mmap_threshold=18446744073709551616",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
/* Also check some tunable aliases. */
|
|
{
|
|
"MALLOC_CHECK_",
|
|
"2",
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"MALLOC_MMAP_THRESHOLD_",
|
|
"4096",
|
|
0,
|
|
4096,
|
|
0,
|
|
},
|
|
{
|
|
"MALLOC_PERTURB_",
|
|
"0x55",
|
|
0,
|
|
0,
|
|
0x55,
|
|
},
|
|
/* 0x800 is larger than tunable maxval (0xff), so the tunable is unchanged. */
|
|
{
|
|
"MALLOC_PERTURB_",
|
|
"0x800",
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
/* Also check for repeated tunables with a count larger than the total number
|
|
of tunables. */
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
NULL,
|
|
2,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
NULL,
|
|
1,
|
|
0,
|
|
0,
|
|
},
|
|
{
|
|
"GLIBC_TUNABLES",
|
|
NULL,
|
|
0,
|
|
0,
|
|
0,
|
|
},
|
|
};
|
|
|
|
static int
|
|
handle_restart (int i)
|
|
{
|
|
TEST_COMPARE (tests[i].expected_malloc_check,
|
|
TUNABLE_GET_FULL (glibc, malloc, check, int32_t, NULL));
|
|
TEST_COMPARE (tests[i].expected_mmap_threshold,
|
|
TUNABLE_GET_FULL (glibc, malloc, mmap_threshold, size_t, NULL));
|
|
TEST_COMPARE (tests[i].expected_perturb,
|
|
TUNABLE_GET_FULL (glibc, malloc, perturb, int32_t, NULL));
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
do_test (int argc, char *argv[])
|
|
{
|
|
/* We must have either:
|
|
- One our fource parameters left if called initially:
|
|
+ path to ld.so optional
|
|
+ "--library-path" optional
|
|
+ the library path optional
|
|
+ the application name
|
|
+ the test to check */
|
|
|
|
TEST_VERIFY_EXIT (argc == 2 || argc == 5);
|
|
|
|
if (restart)
|
|
return handle_restart (atoi (argv[1]));
|
|
|
|
char nteststr[INT_BUFSIZE_BOUND (int)];
|
|
|
|
char *spargv[10];
|
|
{
|
|
int i = 0;
|
|
for (; i < argc - 1; i++)
|
|
spargv[i] = argv[i + 1];
|
|
spargv[i++] = (char *) "--direct";
|
|
spargv[i++] = (char *) "--restart";
|
|
spargv[i++] = nteststr;
|
|
spargv[i] = NULL;
|
|
}
|
|
|
|
/* Create a tunable line with the duplicate values with a total number
|
|
larger than the different number of tunables. */
|
|
{
|
|
enum { tunables_list_size = array_length (tunable_list) };
|
|
const char *value = "";
|
|
for (int i = 0; i < tunables_list_size; i++)
|
|
value = xasprintf ("%sglibc.malloc.check=2%c",
|
|
value,
|
|
i == (tunables_list_size - 1) ? '\0' : ':');
|
|
tests[33].value = value;
|
|
}
|
|
/* Same as before, but the last tunable values is differen than the
|
|
rest. */
|
|
{
|
|
enum { tunables_list_size = array_length (tunable_list) };
|
|
const char *value = "";
|
|
for (int i = 0; i < tunables_list_size - 1; i++)
|
|
value = xasprintf ("%sglibc.malloc.check=2:", value);
|
|
value = xasprintf ("%sglibc.malloc.check=1", value);
|
|
tests[34].value = value;
|
|
}
|
|
/* Same as before, but with an invalid last entry. */
|
|
{
|
|
enum { tunables_list_size = array_length (tunable_list) };
|
|
const char *value = "";
|
|
for (int i = 0; i < tunables_list_size - 1; i++)
|
|
value = xasprintf ("%sglibc.malloc.check=2:", value);
|
|
value = xasprintf ("%sglibc.malloc.check=1=1", value);
|
|
tests[35].value = value;
|
|
}
|
|
|
|
for (int i = 0; i < array_length (tests); i++)
|
|
{
|
|
snprintf (nteststr, sizeof nteststr, "%d", i);
|
|
|
|
printf ("[%d] Spawned test for %s=%s\n",
|
|
i,
|
|
tests[i].name,
|
|
tests[i].value);
|
|
setenv (tests[i].name, tests[i].value, 1);
|
|
struct support_capture_subprocess result
|
|
= support_capture_subprogram (spargv[0], spargv, NULL);
|
|
support_capture_subprocess_check (&result, "tst-tunables", 0,
|
|
sc_allow_stderr);
|
|
support_capture_subprocess_free (&result);
|
|
unsetenv (tests[i].name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define TEST_FUNCTION_ARGV do_test
|
|
#include <support/test-driver.c>
|