1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* 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_private.h>
#include <rtthread.h>
#define PAGE_SZ (1 << MM_PAGE_SHIFT)
#define PAGE_COUNT ('z' - 'a' + 1)
#define FILE_PATH "/test_mmap"
#define FILE_SZ (PAGE_COUNT * PAGE_SZ)
static struct rt_lwp *lwp;
static size_t former_vsz;
static size_t former_vcount;
static char page_sz_buf[PAGE_SZ];
static void *vaddr = (void *)0x100000000;
static long pgoffset = 0;
static size_t ex_prot = PROT_NONE;
static size_t ex_flags = MAP_PRIVATE | MAP_ANONYMOUS;
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 rt_err_t _lwp_get_user(struct rt_lwp *lwp, char *vaddr, char *buffer)
{
rt_varea_t varea = _aspace_bst_search(lwp->aspace, vaddr);
if (varea && varea->mem_obj && varea->mem_obj->page_read)
{
struct rt_aspace_io_msg io_msg;
rt_mm_io_msg_init(&io_msg, MM_PA_TO_OFF(vaddr), vaddr, buffer);
varea->mem_obj->page_read(varea, &io_msg);
}
return RT_EOK;
}
static void _verify_file_content(const char *mmap_buf)
{
char ch = 'a';
for (char *read_va = (char *)mmap_buf; read_va < mmap_buf + FILE_SZ; read_va += PAGE_SZ, ch++)
{
_lwp_get_user(lwp, read_va, page_sz_buf);
utest_int_equal(RT_EOK, memtest(page_sz_buf, ch, PAGE_SZ));
}
}
static void test_mmap_fd(void)
{
former_vsz = rt_aspace_count_vsz(lwp->aspace);
former_vcount = count_vcount(lwp->aspace);
/* create an existed mapping */
long temp_fd;
temp_fd = open(FILE_PATH, O_RDONLY);
LOG_D("New fd=%ld path=%s", temp_fd, FILE_PATH);
uassert_true(temp_fd >= 0);
utest_int_equal(
lwp_mmap2(lwp, vaddr, FILE_SZ, ex_prot, ex_flags, temp_fd, pgoffset),
vaddr);
close(temp_fd);
utest_int_equal(former_vsz + FILE_SZ, rt_aspace_count_vsz(lwp->aspace));
utest_int_equal(former_vcount + 1, count_vcount(lwp->aspace));
_verify_file_content(vaddr);
/* create an override mapping */
/* close */
utest_int_equal(RT_EOK, rt_aspace_unmap_range(lwp->aspace, vaddr, FILE_SZ));
}
static void testcase_main(void)
{
test_mmap_fd();
}
static void _setup_file_content(long fd)
{
char ch = 'a';
for (size_t i = 0; i < PAGE_COUNT; i++, ch++)
{
memset(page_sz_buf, ch, PAGE_SZ);
write(fd, page_sz_buf, PAGE_SZ);
}
}
static rt_err_t utest_tc_init(void)
{
/* setup file */
long temp_file_des;
temp_file_des = open(FILE_PATH, O_RDWR | O_CREAT, 0777);
LOG_D("New fd=%ld path=%s", temp_file_des, FILE_PATH);
if (temp_file_des < 0)
return -RT_ERROR;
_setup_file_content(temp_file_des);
close(temp_file_des);
lwp = lwp_create(0);
if (lwp)
lwp_user_space_init(lwp, 1);
else
return -RT_ENOMEM;
return RT_EOK;
}
static rt_err_t utest_tc_cleanup(void)
{
lwp_ref_dec(lwp);
return RT_EOK;
}
static void testcase(void)
{
UTEST_UNIT_RUN(testcase_main);
}
UTEST_TC_EXPORT(testcase, "testcases.lwp.mman.mmap_fd.basic", utest_tc_init, utest_tc_cleanup, 10);
|
