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
|
// MIT License, Copyright (c) 2021 Marvin Borner
#include <assert.h>
#include <errno.h>
#include <libgui/msg.h>
#include <print.h>
#include <sys.h>
res msg_send(u32 pid, enum message_type type, void *data, u32 size)
{
assert((signed)pid != -1 && size >= sizeof(struct message_header));
char path[32] = { 0 };
snprintf(path, sizeof(path), "/proc/%d/msg", pid);
struct message_header *header = data;
header->magic = MSG_MAGIC;
header->src = getpid();
header->type = type;
return write(path, data, 0, size);
}
res msg_receive(void *buf, u32 size)
{
int ret = read("/proc/self/msg", buf, 0, size);
struct message_header *header = buf;
if (header->magic == MSG_MAGIC)
return ret;
else
return -1;
}
|
