/* mlogin: minimalistic login                */

/* Copyright (c) 2019  Ørjan Malde           */

/* Released under LGPL, see COPYRIGHT.MLOGIN */

#include <unistd.h>

#include <pwd.h>

int switch_user_context(struct passwd *pwd, const char *username)

{

	if(!getuid()) {

		if(initgroups(username, pwd->pw_gid) == -1) {

			printf("initgroups failed: %s", strerror(errno));

			exit(1);

		}

	}

	if(setgid(pwd->pw_gid))

		return 1;

	if(setuid(pwd->pw_uid))

		return 1;

	return 0;

}