Commit | Line | Data |
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d2ba09c1 AS |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #define _GNU_SOURCE | |
3 | #include <sys/uio.h> | |
4 | #include <errno.h> | |
5 | #include <stdio.h> | |
6 | #include <sys/socket.h> | |
7 | #include <fcntl.h> | |
8 | #include <unistd.h> | |
303a339f | 9 | #include "../../include/uapi/linux/bpf.h" |
d2ba09c1 AS |
10 | #include <asm/unistd.h> |
11 | #include "msgfmt.h" | |
12 | ||
13d0f7b8 | 13 | FILE *debug_f; |
d2ba09c1 AS |
14 | |
15 | static int handle_get_cmd(struct mbox_request *cmd) | |
16 | { | |
17 | switch (cmd->cmd) { | |
18 | case 0: | |
19 | return 0; | |
20 | default: | |
21 | break; | |
22 | } | |
23 | return -ENOPROTOOPT; | |
24 | } | |
25 | ||
26 | static int handle_set_cmd(struct mbox_request *cmd) | |
27 | { | |
28 | return -ENOPROTOOPT; | |
29 | } | |
30 | ||
31 | static void loop(void) | |
32 | { | |
33 | while (1) { | |
34 | struct mbox_request req; | |
35 | struct mbox_reply reply; | |
36 | int n; | |
37 | ||
38 | n = read(0, &req, sizeof(req)); | |
39 | if (n != sizeof(req)) { | |
13d0f7b8 | 40 | fprintf(debug_f, "invalid request %d\n", n); |
d2ba09c1 AS |
41 | return; |
42 | } | |
43 | ||
44 | reply.status = req.is_set ? | |
45 | handle_set_cmd(&req) : | |
46 | handle_get_cmd(&req); | |
47 | ||
48 | n = write(1, &reply, sizeof(reply)); | |
49 | if (n != sizeof(reply)) { | |
13d0f7b8 | 50 | fprintf(debug_f, "reply failed %d\n", n); |
d2ba09c1 AS |
51 | return; |
52 | } | |
53 | } | |
54 | } | |
55 | ||
56 | int main(void) | |
57 | { | |
13d0f7b8 BM |
58 | debug_f = fopen("/dev/kmsg", "w"); |
59 | setvbuf(debug_f, 0, _IOLBF, 0); | |
a196fa78 | 60 | fprintf(debug_f, "<5>Started bpfilter\n"); |
d2ba09c1 | 61 | loop(); |
13d0f7b8 | 62 | fclose(debug_f); |
d2ba09c1 AS |
63 | return 0; |
64 | } |