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// 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)
{
if (!data)
return -EFAULT;
assert((signed)pid != -1 && size >= sizeof(struct message_header));
char path[32] = { 0 };
sprintf(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;
}
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