rosetta/lib/libc/io/remote.c

#include <sys/remote.h>

#define TID_INVALID  ((tid_t) - 1)
#define CHID_INVALID ((unsigned int)-1)

struct remote {
	tid_t tid;
	unsigned int chid;
};

static struct remote remotes[] = {
	[SYS_REMOTE_NONE] = {.tid = TID_INVALID, .chid = CHID_INVALID},
	[SYS_REMOTE_NSD] = {.tid = TID_INVALID, .chid = CHID_INVALID},
};
static const size_t nr_remotes = sizeof remotes / sizeof remotes[0];

bool sys_remote_get(
	enum sys_remote_id id,
	tid_t *out_tid,
	unsigned int *out_chid)
{
	if (id < 0 || id >= nr_remotes) {
		return false;
	}

	const struct remote *remote = &remotes[id];
	if (remote->tid == TID_INVALID || remote->chid == CHID_INVALID) {
		return false;
	}

	*out_tid = remote->tid;
	*out_chid = remote->chid;
	return true;
}

void sys_remote_set(enum sys_remote_id id, tid_t tid, unsigned int chid)
{
	if (id < 0 || id >= nr_remotes) {
		return;
	}

	struct remote *remote = &remotes[id];
	remote->tid = tid;
	remote->chid = chid;
}