tcsh-65/tcsh/tc.who.c

60 #  define utmp utmpx
76 #   include <utmp.h>
81 #  include <utmp.h>
86 # define UTNAMLEN	sizeof(((struct utmp *) 0)->ut_name)
87 # define UTLINLEN	sizeof(((struct utmp *) 0)->ut_line)
92 #   define UTHOSTLEN	sizeof(((struct utmp *) 0)->ut_host)
97 struct utmp __ut;
116 #  define TCSH_PATH_UTMP "/etc/utmp"
176  * Watch /etc/utmp for login/logout changes.
184     struct utmp *uptr;
188     struct utmp utmp;
199     USE(utmp);
247      * Don't open utmp all the time, stat it first...
277      * xterm clears the entire utmp entry - mark everyone on the status list
284      * Read in the utmp file, sort the entries, and update existing entries or
289         memcpy(&utmp, uptr, sizeof (utmp));
291     while (xread(utmpfd, &utmp, sizeof utmp) == sizeof utmp) {
296 	if (utmp.ut_type != USER_PROCESS)
299 	/* Why is that? Cause the utmp file is always corrupted??? */
300 	if (utmp.ut_type != USER_PROCESS && utmp.ut_type != DEAD_PROCESS)
305 	if (utmp.ut_name[0] == '\0' && utmp.ut_line[0] == '\0')
308 	if (utmp.ut_type == DEAD_PROCESS && utmp.ut_line[0] == '\0')
312 	while (wp->who_next && (comp = strncmp(wp->who_tty, utmp.ut_line, UTLINLEN)) < 0)
316 	    if (utmp.ut_time < wp->who_time)
319 	    if (utmp.ut_type == DEAD_PROCESS) {
320 		wp->who_time = utmp.ut_time;
325 	    if (utmp.ut_name[0] == '\0') {
326 		wp->who_time = utmp.ut_time;
329 	    else if (strncmp(utmp.ut_name, wp->who_name, UTNAMLEN) == 0) {
331 		wp->who_time = utmp.ut_time;
335 		(void) strncpy(wp->who_new, utmp.ut_name, UTNAMLEN);
344 		(void) strncpy(wp->who_host, utmp.ut_host, UTHOSTLEN);
347 		wp->who_time = utmp.ut_time;
354 	else {		/* new tty in utmp */
356 	    (void) strncpy(wpnew->who_tty, utmp.ut_line, UTLINLEN);
365 	    (void) strncpy(wpnew->who_host, utmp.ut_host, UTHOSTLEN);
368 	    wpnew->who_time = utmp.ut_time;
370 	    if (utmp.ut_type == DEAD_PROCESS)
374 	    if (utmp.ut_name[0] == '\0')
377 		(void) strncpy(wpnew->who_new, utmp.ut_name, UTNAMLEN);
427 	    if (wp->who_status & CLEARED) {/* utmp entry was cleared */