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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-08-17 Shell test case for aspace_map(MAP_FIXED)
*/
#include "common.h"
#include "lwp_user_mm.h"
#include "utest_assert.h"
#include <mm_aspace.h>
#include <rtthread.h>
static struct rt_lwp *lwp;
static size_t former_vsz;
static size_t former_vcount;
static void *vaddr = (void *)0x100000000;
static size_t ex_size = 0x5000;
static char *override_start;
static size_t override_size = 0x2000;
static long fd = -1;
static long pgoffset = 0;
static size_t ex_prot = PROT_NONE;
static size_t ex_flags = MAP_PRIVATE | MAP_ANONYMOUS;
static size_t override_prot = PROT_READ | PROT_WRITE;
static size_t override_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED;
static int _count_vsz(rt_varea_t varea, void *arg)
{
rt_base_t *pvsz = arg;
*pvsz += 1;
return 0;
}
static rt_base_t count_vcount(rt_aspace_t aspace)
{
rt_base_t vcount = 0;
rt_aspace_traversal(aspace, _count_vsz, &vcount);
return vcount;
}
static char put_data[] = "hello,world";
static void test_map_fixed(void)
{
void *effect_override;
former_vsz = rt_aspace_count_vsz(lwp->aspace);
former_vcount = count_vcount(lwp->aspace);
/* create an existed mapping */
vaddr = lwp_mmap2(lwp, vaddr, ex_size, ex_prot, ex_flags, fd, pgoffset);
uassert_true((long)vaddr > 0);
utest_int_equal(former_vsz + ex_size, rt_aspace_count_vsz(lwp->aspace));
utest_int_equal(former_vcount + 1, count_vcount(lwp->aspace));
former_vsz += ex_size;
former_vcount += 1;
/* fix private in the middle */
override_start = (char *)vaddr + 0x1000;
effect_override = lwp_mmap2(lwp, override_start, override_size, override_prot, override_flags, fd, pgoffset);
uassert_true(effect_override == override_start);
utest_int_equal(former_vsz, rt_aspace_count_vsz(lwp->aspace));
utest_int_equal(former_vcount + 2, count_vcount(lwp->aspace));
utest_int_equal(
lwp_data_put(lwp, effect_override, put_data, sizeof(put_data)),
sizeof(put_data)
);
utest_int_equal(RT_EOK, rt_aspace_unmap_range(lwp->aspace, vaddr, ex_size));
}
static void aspace_unmap_tc(void)
{
test_map_fixed();
}
static rt_size_t total, used, max_used;
static rt_size_t totala, useda, max_useda;
static rt_ubase_t level;
static rt_err_t utest_tc_init(void)
{
lwp = lwp_create(0);
if (lwp)
lwp_user_space_init(lwp, 1);
else
return -RT_ENOMEM;
/* stats */
level = rt_heap_lock();
rt_memory_info(&total, &used, &max_used);
return RT_EOK;
}
static rt_err_t utest_tc_cleanup(void)
{
lwp_ref_dec(lwp);
/* check */
rt_memory_info(&totala, &useda, &max_useda);
rt_heap_unlock(level);
utest_int_equal(total, totala);
utest_int_less_equal(useda, used);
return RT_EOK;
}
static void testcase(void)
{
UTEST_UNIT_RUN(aspace_unmap_tc);
}
UTEST_TC_EXPORT(testcase, "testcases.lwp.mman.mmap_anon.fix_private", utest_tc_init, utest_tc_cleanup, 10);
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