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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <stdint.h>
#include <errno.h>
#include <assert.h>
#include <poll.h>
#include <sys/ioctl.h>
#include "kdbus-util.h"
#include "kdbus-enum.h"
static int msg_recv_prio(struct conn *conn, int64_t priority)
{
struct kdbus_cmd_recv recv = {
.flags = KDBUS_RECV_USE_PRIORITY,
.priority = priority,
};
struct kdbus_msg *msg;
int ret;
ret = ioctl(conn->fd, KDBUS_CMD_MSG_RECV, &recv);
if (ret < 0) {
ret = -errno;
fprintf(stderr, "error receiving message: %d (%m)\n", ret);
return ret;
}
msg = (struct kdbus_msg *)(conn->buf + recv.offset);
msg_dump(conn, msg);
ret = ioctl(conn->fd, KDBUS_CMD_FREE, &recv.offset);
if (ret < 0) {
ret = -errno;
fprintf(stderr, "error free message: %d (%m)\n", ret);
return ret;
}
return 0;
}
static int run_test(void)
{
struct {
struct kdbus_cmd_make head;
/* bloom size item */
struct {
uint64_t size;
uint64_t type;
struct kdbus_bloom_parameter bloom;
} bs;
/* name item */
uint64_t n_size;
uint64_t n_type;
char name[64];
} bus_make;
char *bus;
struct conn *conn_a, *conn_b;
uint64_t cookie;
int fdc;
int ret;
printf("-- opening /dev/" KBUILD_MODNAME "/control\n");
fdc = open("/dev/" KBUILD_MODNAME "/control", O_RDWR|O_CLOEXEC);
if (fdc < 0) {
fprintf(stderr, "--- error %d (%m)\n", fdc);
return EXIT_FAILURE;
}
memset(&bus_make, 0, sizeof(bus_make));
bus_make.head.flags = KDBUS_MAKE_POLICY_OPEN;
bus_make.bs.size = sizeof(bus_make.bs);
bus_make.bs.type = KDBUS_ITEM_BLOOM_PARAMETER;
bus_make.bs.bloom.size = 64;
bus_make.bs.bloom.n_hash = 1;
snprintf(bus_make.name, sizeof(bus_make.name), "%u-testbus", getuid());
bus_make.n_type = KDBUS_ITEM_MAKE_NAME;
bus_make.n_size = KDBUS_ITEM_HEADER_SIZE + strlen(bus_make.name) + 1;
bus_make.head.size = sizeof(struct kdbus_cmd_make) +
sizeof(bus_make.bs) +
bus_make.n_size;
printf("-- creating bus '%s'\n", bus_make.name);
ret = ioctl(fdc, KDBUS_CMD_BUS_MAKE, &bus_make);
if (ret) {
fprintf(stderr, "--- error %d (%m)\n", ret);
return EXIT_FAILURE;
}
if (asprintf(&bus, "/dev/" KBUILD_MODNAME "/%s/bus", bus_make.name) < 0)
return EXIT_FAILURE;
conn_a = connect_to_bus(bus, 0);
conn_b = connect_to_bus(bus, 0);
if (!conn_a || !conn_b)
return EXIT_FAILURE;
cookie = 0;
msg_send(conn_b, NULL, ++cookie, 0, 0, 25, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -600, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, 10, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -35, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -100, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, 20, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -15, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -800, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -150, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -150, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, 10, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -800, conn_a->id);
msg_send(conn_b, NULL, ++cookie, 0, 0, -10, conn_a->id);
printf("--- get priority -200\n");
for (;;) {
if (msg_recv_prio(conn_a, -200) < 0)
break;
}
printf("--- get priority -100\n");
for (;;) {
if (msg_recv_prio(conn_a, -100) < 0)
break;
}
printf("--- get priority 10\n");
for (;;) {
if (msg_recv_prio(conn_a, 10) < 0)
break;
}
printf("--- get priority (all)\n");
for (;;) {
if (msg_recv(conn_a) < 0)
break;
}
close(conn_a->fd);
close(conn_b->fd);
free(conn_a);
free(conn_b);
close(fdc);
free(bus);
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
if (argc > 1)
while (run_test() == 0);
return run_test();
}
|
