#ifdef USG
-/* some systems require inclusion of sys/types.h before utmp.h */
-#include <sys/types.h>
-#include <utmp.h>
-
/* system V, so no /etc/ttys file. In this case, scan the
/etc/utmp file
*/
+struct utmp {
+ char ut_name[8];
+ char ut_id[4];
+ char ut_line[12];
+ short ut_pid;
+ short ut_type;
+ struct exit_status {
+ short e_termination;
+ short e_exit;
+ } ut_exit;
+ long ut_time;
+};
#define FILENAME "/etc/utmp"
#else
#define FILENAME "/etc/ttys"
if ((fd = open(FILENAME, 0)) < 0) return 0;
#ifdef USG
while (read(fd, (char *) &buf, sizeof(buf)) == sizeof(buf)) {
- if ((buf.ut_type == INIT_PROCESS ||
- buf.ut_type == LOGIN_PROCESS ||
- buf.ut_type == USER_PROCESS ||
- buf.ut_type == DEAD_PROCESS) &&
+ /* processes associated with a terminal ...
+ unfortunately we cannot use the include file because
+ some systems have a different one ...
+ INIT_PROCESS, DEAD_PROCESS, USER_PROCESS, LOGIN_PROCESS
+ */
+ if ((buf.ut_type >= 5 && buf.ut_type <= 8) &&
! strncmp(buf.ut_line, p, sizeof(buf.ut_line))) {
close(fd);
return retval;