setresgid.c\unistd\src - musl - musl - an implementation of the standard library for Linux-based systems

#define _GNU_SOURCE
#include <unistd.h>
#include "syscall.h"
#include "libc.h"
int setresgid(gid_t rgid, gid_t egid, gid_t sgid)
{
	return __setxid(SYS_setresgid, rgid, egid, sgid);
}