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
|
#include "types.h"
#include "stat.h"
#include "user.h"
#include "fs.h"
#include "fcntl.h"
// file system tests
char buf[2000];
char name[3];
char *echo_args[] = { "echo", "hello", "goodbye", 0 };
char *cat_args[] = { "cat", "README", 0 };
int
main(void)
{
int fd;
int i;
int stdout = 1;
printf(stdout, "userfs is running\n");
block();
fd = open("echo", 0);
if(fd >= 0){
printf(stdout, "open echo ok\n");
close(fd);
} else {
printf(stdout, "open echo failed!\n");
}
fd = open("doesnotexist", 0);
if(fd >= 0){
printf(stdout, "open doesnotexist succeeded!\n");
close(fd);
} else {
printf(stdout, "open doesnotexist failed\n");
}
fd = open("doesnotexist", O_CREATE|O_RDWR);
if(fd >= 0){
printf(stdout, "creat doesnotexist succeeded\n");
} else {
printf(stdout, "error: creat doesnotexist failed!\n");
}
for (i = 0; i < 100; i++) {
if (write (fd, "aaaaaaaaaa", 10) != 10) {
printf(stdout, "error: write new file failed\n");
}
if (write (fd, "bbbbbbbbbb", 10) != 10) {
printf(stdout, "error: write new file failed\n");
}
}
printf(stdout, "writes done\n");
close(fd);
fd = open("doesnotexist", O_RDONLY);
if(fd >= 0){
printf(stdout, "open doesnotexist succeeded\n");
} else {
printf(stdout, "error: open doesnotexist failed!\n");
}
i = read(fd, buf, 2000);
if (i == 2000) {
printf(stdout, "read succeeded\n");
} else {
printf(stdout, "read failed\n");
}
close(fd);
unlink("doesnotexist");
name[0] = 'a';
name[2] = '\0';
for (i = 0; i < 52; i++) {
name[1] = '0' + i;
fd = open(name, O_CREATE|O_RDWR);
close(fd);
}
name[0] = 'a';
name[2] = '\0';
for (i = 0; i < 52; i++) {
name[1] = '0' + i;
unlink(name);
}
//exec("echo", echo_args);
printf(stdout, "about to do exec\n");
exec("cat", cat_args);
return 0;
}
|
