wlroots-hyprland/include/backend/session/direct-ipc.h

#ifndef SESSION_DIRECT_IPC
#define SESSION_DIRECT_IPC

#include <sys/types.h>

int direct_ipc_open(int sock, const char *path);
void direct_ipc_setmaster(int sock, int fd);
void direct_ipc_dropmaster(int sock, int fd);
void direct_ipc_finish(int sock, pid_t pid);
int direct_ipc_start(pid_t *pid_out);

#endif