--- physlock-11/auth.c 2017-07-13 07:23:52.000000000 +0000 +++ physlock-11/auth.c 2018-09-21 21:21:36.240024566 +0000 @@ -16,13 +16,14 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#define _GNU_SOURCE #include <paths.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <pwd.h> #include <unistd.h> -#include <utmp.h> +#include <utmpx.h> #include <errno.h> #include <security/pam_misc.h> @@ -41,12 +42,12 @@ static void get_pam(userinfo_t *uinfo) { void get_user(userinfo_t *uinfo, int vt, uid_t owner) { FILE *uf; - struct utmp r; + struct utmpx r; struct passwd *pw; char tty[16], name[UT_NAMESIZE+1]; uinfo->name = NULL; - while ((uf = fopen(_PATH_UTMP, "r")) == NULL && errno == EINTR); + while ((uf = fopen(UTMPX_FILE, "r")) == NULL && errno == EINTR); if (uf != NULL) { snprintf(tty, sizeof(tty), "tty%d", vt);