1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
73 	while ((ch = getopt(argc, argv, "HTabmqsu")) != -1) {  in main()
81 		case 'a':		/* Same as -bdlprtTu */  in main()
104 	argc -= optind;  in main()
109 		/* "who am i" or "who am I", equivalent to -m */  in main()
111 		argc -= 2;  in main()
144 	fprintf(stderr, "usage: who [-abHmqsTu] [am I] [file]\n");  in usage()
152 	printf("%-16s ", "NAME");  in heading()
155 	printf("%-12s %-12s ", "LINE", "TIME");  in heading()
158 	printf("%-16s\n", "FROM");  in heading()
167 	static int d_first = -1;  in row()
177 		snprintf(tty, sizeof(tty), "%s%s", _PATH_DEV, ut->ut_line);  in row()
180 			    '+' : '-';  in row()
181 			idle = time(NULL) - sb.st_mtime;  in row()
185 	printf("%-16s ", ut->ut_user);  in row()
188 	if (ut->ut_type == BOOT_TIME)  in row()
189 		printf("%-12s ", "system boot");  in row()
191 		printf("%-12s ", ut->ut_line);  in row()
192 	t = ut->ut_tv.tv_sec;  in row()
195 	printf("%-*s ", 12, buf);  in row()
205 	if (*ut->ut_host != '\0')  in row()
206 		printf("(%s)", ut->ut_host);  in row()
222 		return (-1);  in ttystat()
231 		if ((aflag || !bflag) && utx->ut_type == USER_PROCESS) {  in process_utmp()
232 			if (ttystat(utx->ut_line) == 0)  in process_utmp()
234 		} else if (bflag && utx->ut_type == BOOT_TIME)  in process_utmp()
243 	int col, ncols, num;  in quick()  local
246 	col = num = 0;  in quick()
248 		if (utx->ut_type != USER_PROCESS)  in quick()
250 		printf("%-16s", utx->ut_user);  in quick()
257 		num++;  in quick()
262 	printf("# users = %d\n", num);  in quick()
274 	else if (strncmp(tty, _PATH_DEV, sizeof _PATH_DEV - 1) == 0)  in whoami()
275 		tty += sizeof _PATH_DEV - 1;  in whoami()
279 	if ((utx = getutxline(&ut)) != NULL && utx->ut_type == USER_PROCESS) {  in whoami()
287 		name = pwd->pw_name;  in whoami()
300 	char *cols, *ep;  in ttywidth()  local
302 	if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') {  in ttywidth()
304 		width = strtol(cols, &ep, 10);  in ttywidth()
305 		if (errno || width <= 0 || width > INT_MAX || ep == cols ||  in ttywidth()
311 	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1)  in ttywidth()