14  *  mode commands.  Note that some of the commands are implemented in-line
37 struct errs		/* structure for a system-call error */
48  *  show_help() - display the help screen; invoked in response to
56 	{'a', "toggle the display of process titles", false, CMD_showargs},
57 	{'C', "toggle the display of raw or weighted CPU percentage", false, CMD_wcputog},
60 	{'H', "toggle the display of threads", false, CMD_thrtog},
63 	{'i', "toggle the display of idle processes", false, CMD_idletog},
66 	{'j', "toggle the display of jail ID", false, CMD_jidtog},
68 	{'m', "toggle the display between 'cpu' and 'io' modes", false, CMD_viewtog},
72 	{'P', "toggle the display of per-CPU statistics", false, CMD_pcputog},
76 	{'S', "toggle the display of system processes", false, CMD_viewsys},
78 	{'T', "toggle the display of thread IDs", false, CMD_toggletid},
79 	{'t', "toggle the display of this process", false, CMD_selftog},
81 	{'w', "toggle the display of swap use for each process", false, CMD_swaptog},
82 	{'z', "toggle the display of the system idle process", false, CMD_kidletog},
95 	while (curcmd->c != 0) {  in show_help()
96 		if (overstrike && !curcmd->available_to_dumb) {  in show_help()
100 		if (curcmd->desc == NULL) {  in show_help()
106 		if (nextcmd->desc == NULL && nextcmd->c != '\0') {  in show_help()
107 			sprintf(keys, "%c or %c", curcmd->c, nextcmd->c);  in show_help()
108 		} else if (curcmd->c == ' '){  in show_help()
113 			sprintf(keys, "%c", curcmd->c);  in show_help()
115 		printf("%s\t- %s\n", keys, curcmd->desc);  in show_help()
155 	return(-1);  in scanint()
162 	    val = val * 10 + (ch - '0');  in scanint()
170 	    return(-1);  in scanint()
207  *  err_string() - return an appropriate error string.  This is what the
221     int currerr = -1;  in err_string()
237     stringlen = STRMAX - 2;  in err_string()
243 	if (errp->errnum != currerr)  in err_string()
253 	    currerr = errp->errnum;  in err_string()
256 	if ((stringlen = str_addarg(string, stringlen, errp->arg, first)) ==0)  in err_string()
271  *  str_adderr(str, len, err) - add an explanation of error "err" to
289     return(len - msglen);  in str_adderr()
293  *  str_addarg(str, len, arg, first) - add the string argument "arg" to
317     return(len - arglen);  in str_addarg()
321  *  err_compar(p1, p2) - comparison routine used by "qsort"
334     if ((result = g1->errnum - g2->errnum) == 0)  in err_compar()
336 	return(strcmp(g1->arg, g2->arg));  in err_compar()
342  *  error_count() - return the number of errors currently logged.
352  *  show_errors() - display on stdout the current log of errors.
364 	printf("%5s: %s\n", errp->arg,  in show_errors()
365 	    errp->errnum == 0 ? "Not a number" : strerror(errp->errnum));  in show_errors()
386         return (-1);  in signame_to_signum()
390  *  kill_procs(str) - send signals to processes, much like the "kill"
407     if (str[0] == '-')  in kill_procs()
428 	    if (signum == -1 )  in kill_procs()
440 	if (scanint(str, &procnum) == -1)  in kill_procs()
447 	    if (kill(procnum, signum) == -1)  in kill_procs()
460  *  renice_procs(str) - change the "nice" of processes, much like the
474     if ((negate = (*str == '-')) != 0)  in renice_procs()
486 	prio = -prio;  in renice_procs()
490     if (procnum == -1 || prio < PRIO_MIN || prio > PRIO_MAX)  in renice_procs()
504 	if (scanint(str, &procnum) == -1)  in renice_procs()
509 	if (setpriority(PRIO_PROCESS, procnum, prio) == -1)  in renice_procs()