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
|
#include <u.h>
#include <libc.h>
#include <gio.h>
int topen(ReadWriter*);
int tclose(ReadWriter*);
long tread(ReadWriter*, void*, long, vlong);
long twrite(ReadWriter*, void*, long, vlong);
ReadWriter tester = {
.open = topen,
.close = tclose,
.pread = tread,
.pwrite = twrite,
};
void
main(int argc, char *argv[])
{
int gfd = gopen(&tester, nil);
if(gfd < 0){
print("gio_test: failed to open gio fd\n");
exits("failure");
}
char *test1 = "Hello World!\n";
char test2[256];
gread(gfd, &test2, 256, 23);
gwrite(gfd, test1, sizeof(test1), 8);
print("gio_test: %s\n", test2);
gclose(gfd);
print("gio_test: passed\n");
exits(nil);
}
int
topen(ReadWriter *rd)
{
print("gio_test: topen: file opened!\n");
return 0;
}
int
tclose(ReadWriter *rd)
{
print("gio_test: tclose: file closed!\n");
return 0;
}
long
tread(ReadWriter *rd, void *bf, long len, vlong offset)
{
char *test = "this is a read string!";
memcpy(bf, test, strlen(test)+1);
print("gio_test: tread: len = %ud, offset = %ud\n", len, offset);
return len;
}
long
twrite(ReadWriter *rd, void *bf, long len, vlong offset)
{
print("gio_test: twrite: written string: %s\n", bf);
print("gio_test: twrite: len = %ud, offset = %ud\n", len, offset);
return len;
}
|
