1*dc4f0af1Szrj /*
2*dc4f0af1Szrj * Copyright (c) 1984 through 2008, William LeFebvre
3*dc4f0af1Szrj * All rights reserved.
4*dc4f0af1Szrj *
5*dc4f0af1Szrj * Redistribution and use in source and binary forms, with or without
6*dc4f0af1Szrj * modification, are permitted provided that the following conditions are met:
7*dc4f0af1Szrj *
8*dc4f0af1Szrj * * Redistributions of source code must retain the above copyright
9*dc4f0af1Szrj * notice, this list of conditions and the following disclaimer.
10*dc4f0af1Szrj *
11*dc4f0af1Szrj * * Redistributions in binary form must reproduce the above
12*dc4f0af1Szrj * copyright notice, this list of conditions and the following disclaimer
13*dc4f0af1Szrj * in the documentation and/or other materials provided with the
14*dc4f0af1Szrj * distribution.
15*dc4f0af1Szrj *
16*dc4f0af1Szrj * * Neither the name of William LeFebvre nor the names of other
17*dc4f0af1Szrj * contributors may be used to endorse or promote products derived from
18*dc4f0af1Szrj * this software without specific prior written permission.
19*dc4f0af1Szrj *
20*dc4f0af1Szrj * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21*dc4f0af1Szrj * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22*dc4f0af1Szrj * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23*dc4f0af1Szrj * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24*dc4f0af1Szrj * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25*dc4f0af1Szrj * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26*dc4f0af1Szrj * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27*dc4f0af1Szrj * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28*dc4f0af1Szrj * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29*dc4f0af1Szrj * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30*dc4f0af1Szrj * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31*dc4f0af1Szrj */
32*dc4f0af1Szrj
33*dc4f0af1Szrj /*
34*dc4f0af1Szrj * Top users/processes display for Unix
35*dc4f0af1Szrj * Version 3
36*dc4f0af1Szrj */
37*dc4f0af1Szrj
38*dc4f0af1Szrj /*
39*dc4f0af1Szrj * This file contains the routines that implement some of the interactive
40*dc4f0af1Szrj * mode commands. Note that some of the commands are implemented in-line
41*dc4f0af1Szrj * in "main". This is necessary because they change the global state of
42*dc4f0af1Szrj * "top" (i.e.: changing the number of processes to display).
43*dc4f0af1Szrj */
44*dc4f0af1Szrj
45*dc4f0af1Szrj #include "os.h"
46*dc4f0af1Szrj #include <ctype.h>
47*dc4f0af1Szrj #include <signal.h>
48*dc4f0af1Szrj #include <stdarg.h>
49*dc4f0af1Szrj #include <unistd.h>
50*dc4f0af1Szrj #include <color.h>
51*dc4f0af1Szrj #include <errno.h>
52*dc4f0af1Szrj #ifdef HAVE_SYS_RESOURCE_H
53*dc4f0af1Szrj #include <sys/resource.h>
54*dc4f0af1Szrj #endif
55*dc4f0af1Szrj
56*dc4f0af1Szrj #if defined(HAVE_DECL_SYS_SIGLIST) & defined(HAVE_STRCASECMP)
57*dc4f0af1Szrj #define USE_SYS_SIGLIST
58*dc4f0af1Szrj #endif
59*dc4f0af1Szrj
60*dc4f0af1Szrj #ifdef USE_SYS_SIGLIST
61*dc4f0af1Szrj extern const char * const sys_siglist[];
62*dc4f0af1Szrj extern const char * const sys_signame[];
63*dc4f0af1Szrj #else
64*dc4f0af1Szrj #include "sigdesc.h" /* generated automatically */
65*dc4f0af1Szrj #endif
66*dc4f0af1Szrj #include "top.h"
67*dc4f0af1Szrj #include "machine.h"
68*dc4f0af1Szrj #include "globalstate.h"
69*dc4f0af1Szrj #include "boolean.h"
70*dc4f0af1Szrj #include "color.h"
71*dc4f0af1Szrj #include "commands.h"
72*dc4f0af1Szrj #include "display.h"
73*dc4f0af1Szrj #include "screen.h"
74*dc4f0af1Szrj #include "username.h"
75*dc4f0af1Szrj #include "utils.h"
76*dc4f0af1Szrj #include "version.h"
77*dc4f0af1Szrj
78*dc4f0af1Szrj extern int errno;
79*dc4f0af1Szrj
80*dc4f0af1Szrj extern char *copyright;
81*dc4f0af1Szrj
82*dc4f0af1Szrj typedef struct command {
83*dc4f0af1Szrj int ch;
84*dc4f0af1Szrj int (*cmd_func)(globalstate *);
85*dc4f0af1Szrj char *help;
86*dc4f0af1Szrj } command;
87*dc4f0af1Szrj
88*dc4f0af1Szrj /*
89*dc4f0af1Szrj * Some of the commands make system calls that could generate errors.
90*dc4f0af1Szrj * These errors are collected up in an array of structures for later
91*dc4f0af1Szrj * contemplation and display. Such routines return a string containing an
92*dc4f0af1Szrj * error message, or NULL if no errors occurred. We need an upper limit on
93*dc4f0af1Szrj * the number of errors, so we arbitrarily choose 20.
94*dc4f0af1Szrj */
95*dc4f0af1Szrj
96*dc4f0af1Szrj #define ERRMAX 20
97*dc4f0af1Szrj
98*dc4f0af1Szrj struct errs /* structure for a system-call error */
99*dc4f0af1Szrj {
100*dc4f0af1Szrj int errnum; /* value of errno (that is, the actual error) */
101*dc4f0af1Szrj char *arg; /* argument that caused the error */
102*dc4f0af1Szrj };
103*dc4f0af1Szrj
104*dc4f0af1Szrj static struct errs errs[ERRMAX];
105*dc4f0af1Szrj static int errcnt;
106*dc4f0af1Szrj
107*dc4f0af1Szrj /* These macros get used to reset and log the errors */
108*dc4f0af1Szrj #define ERR_RESET errcnt = 0
109*dc4f0af1Szrj #define ERROR(p, e) if (errcnt < ERRMAX) \
110*dc4f0af1Szrj { \
111*dc4f0af1Szrj errs[errcnt].arg = (p); \
112*dc4f0af1Szrj errs[errcnt++].errnum = (e); \
113*dc4f0af1Szrj }
114*dc4f0af1Szrj
115*dc4f0af1Szrj /*
116*dc4f0af1Szrj * err_compar(p1, p2) - comparison routine used by "qsort"
117*dc4f0af1Szrj * for sorting errors.
118*dc4f0af1Szrj */
119*dc4f0af1Szrj
120*dc4f0af1Szrj int
err_compar(const void * p1,const void * p2)121*dc4f0af1Szrj err_compar(const void *p1, const void *p2)
122*dc4f0af1Szrj
123*dc4f0af1Szrj {
124*dc4f0af1Szrj register int result;
125*dc4f0af1Szrj
126*dc4f0af1Szrj if ((result = ((struct errs *)p1)->errnum -
127*dc4f0af1Szrj ((struct errs *)p2)->errnum) == 0)
128*dc4f0af1Szrj {
129*dc4f0af1Szrj return(strcmp(((struct errs *)p1)->arg,
130*dc4f0af1Szrj ((struct errs *)p2)->arg));
131*dc4f0af1Szrj }
132*dc4f0af1Szrj return(result);
133*dc4f0af1Szrj }
134*dc4f0af1Szrj
135*dc4f0af1Szrj /*
136*dc4f0af1Szrj * str_adderr(str, len, err) - add an explanation of error "err" to
137*dc4f0af1Szrj * the string "str" without overflowing length "len". return
138*dc4f0af1Szrj * number of characters remaining in str, or 0 if overflowed.
139*dc4f0af1Szrj */
140*dc4f0af1Szrj
141*dc4f0af1Szrj int
str_adderr(char * str,int len,int err)142*dc4f0af1Szrj str_adderr(char *str, int len, int err)
143*dc4f0af1Szrj
144*dc4f0af1Szrj {
145*dc4f0af1Szrj register char *msg;
146*dc4f0af1Szrj register int msglen;
147*dc4f0af1Szrj
148*dc4f0af1Szrj msg = err == 0 ? "Not a number" : errmsg(err);
149*dc4f0af1Szrj msglen = strlen(msg) + 2;
150*dc4f0af1Szrj if (len <= msglen)
151*dc4f0af1Szrj {
152*dc4f0af1Szrj return(0);
153*dc4f0af1Szrj }
154*dc4f0af1Szrj (void) strcat(str, ": ");
155*dc4f0af1Szrj (void) strcat(str, msg);
156*dc4f0af1Szrj return(len - msglen);
157*dc4f0af1Szrj }
158*dc4f0af1Szrj
159*dc4f0af1Szrj /*
160*dc4f0af1Szrj * str_addarg(str, len, arg, first) - add the string argument "arg" to
161*dc4f0af1Szrj * the string "str" without overflowing length "len". This is the
162*dc4f0af1Szrj * first in the group when "first" is set (indicating that a comma
163*dc4f0af1Szrj * should NOT be added to the front). Return number of characters
164*dc4f0af1Szrj * remaining in str, or 0 if overflowed.
165*dc4f0af1Szrj */
166*dc4f0af1Szrj
167*dc4f0af1Szrj int
str_addarg(char * str,int len,char * arg,int first)168*dc4f0af1Szrj str_addarg(char *str, int len, char *arg, int first)
169*dc4f0af1Szrj
170*dc4f0af1Szrj {
171*dc4f0af1Szrj register int arglen;
172*dc4f0af1Szrj
173*dc4f0af1Szrj arglen = strlen(arg);
174*dc4f0af1Szrj if (!first)
175*dc4f0af1Szrj {
176*dc4f0af1Szrj arglen += 2;
177*dc4f0af1Szrj }
178*dc4f0af1Szrj if (len <= arglen)
179*dc4f0af1Szrj {
180*dc4f0af1Szrj return(0);
181*dc4f0af1Szrj }
182*dc4f0af1Szrj if (!first)
183*dc4f0af1Szrj {
184*dc4f0af1Szrj (void) strcat(str, ", ");
185*dc4f0af1Szrj }
186*dc4f0af1Szrj (void) strcat(str, arg);
187*dc4f0af1Szrj return(len - arglen);
188*dc4f0af1Szrj }
189*dc4f0af1Szrj
190*dc4f0af1Szrj /*
191*dc4f0af1Szrj * void err_string()
192*dc4f0af1Szrj *
193*dc4f0af1Szrj * Use message_error to log errors in the errs array. This function
194*dc4f0af1Szrj * will combine identical errors to make the message short, but if
195*dc4f0af1Szrj * there is more than one type of error it will call message_error
196*dc4f0af1Szrj * for each one.
197*dc4f0af1Szrj */
198*dc4f0af1Szrj
199*dc4f0af1Szrj #define STRMAX 80
200*dc4f0af1Szrj
201*dc4f0af1Szrj void
err_string()202*dc4f0af1Szrj err_string()
203*dc4f0af1Szrj
204*dc4f0af1Szrj {
205*dc4f0af1Szrj register struct errs *errp;
206*dc4f0af1Szrj register int cnt = 0;
207*dc4f0af1Szrj register int first = Yes;
208*dc4f0af1Szrj register int currerr = -1;
209*dc4f0af1Szrj int stringlen = 0; /* characters still available in "string" */
210*dc4f0af1Szrj char string[STRMAX];
211*dc4f0af1Szrj
212*dc4f0af1Szrj /* if there are no errors, our job is easy */
213*dc4f0af1Szrj if (errcnt == 0)
214*dc4f0af1Szrj {
215*dc4f0af1Szrj return;
216*dc4f0af1Szrj }
217*dc4f0af1Szrj
218*dc4f0af1Szrj /* sort the errors */
219*dc4f0af1Szrj qsort((char *)errs, errcnt, sizeof(struct errs), err_compar);
220*dc4f0af1Szrj
221*dc4f0af1Szrj /* initialize the buffer (probably not necessary) */
222*dc4f0af1Szrj string[0] = '\0';
223*dc4f0af1Szrj stringlen = STRMAX - 1;
224*dc4f0af1Szrj
225*dc4f0af1Szrj /* loop thru the sorted list, logging errors */
226*dc4f0af1Szrj while (cnt < errcnt)
227*dc4f0af1Szrj {
228*dc4f0af1Szrj /* point to the current error */
229*dc4f0af1Szrj errp = &(errs[cnt++]);
230*dc4f0af1Szrj
231*dc4f0af1Szrj /* note that on overflow "stringlen" will become 0 and all
232*dc4f0af1Szrj subsequent calls to str_addarg or str_adderr will return 0 */
233*dc4f0af1Szrj
234*dc4f0af1Szrj /* if the error number is different then add the error string */
235*dc4f0af1Szrj if (errp->errnum != currerr)
236*dc4f0af1Szrj {
237*dc4f0af1Szrj if (currerr != -1)
238*dc4f0af1Szrj {
239*dc4f0af1Szrj /* add error string and log the error */
240*dc4f0af1Szrj stringlen = str_adderr(string, stringlen, currerr);
241*dc4f0af1Szrj message_error(" %s", string);
242*dc4f0af1Szrj
243*dc4f0af1Szrj }
244*dc4f0af1Szrj /* reset the buffer */
245*dc4f0af1Szrj string[0] = '\0';
246*dc4f0af1Szrj stringlen = STRMAX - 1;
247*dc4f0af1Szrj
248*dc4f0af1Szrj /* move to next error num */
249*dc4f0af1Szrj currerr = errp->errnum;
250*dc4f0af1Szrj first = Yes;
251*dc4f0af1Szrj }
252*dc4f0af1Szrj
253*dc4f0af1Szrj /* add this arg */
254*dc4f0af1Szrj stringlen = str_addarg(string, stringlen, errp->arg, first);
255*dc4f0af1Szrj first = No;
256*dc4f0af1Szrj }
257*dc4f0af1Szrj
258*dc4f0af1Szrj /* add final message */
259*dc4f0af1Szrj stringlen = str_adderr(string, stringlen, currerr);
260*dc4f0af1Szrj
261*dc4f0af1Szrj /* write the error string */
262*dc4f0af1Szrj message_error(" %s", string);
263*dc4f0af1Szrj }
264*dc4f0af1Szrj
265*dc4f0af1Szrj /*
266*dc4f0af1Szrj * Utility routines that help with some of the commands.
267*dc4f0af1Szrj */
268*dc4f0af1Szrj
269*dc4f0af1Szrj char *
next_field(char * str)270*dc4f0af1Szrj next_field(char *str)
271*dc4f0af1Szrj
272*dc4f0af1Szrj
273*dc4f0af1Szrj {
274*dc4f0af1Szrj if ((str = strchr(str, ' ')) == NULL)
275*dc4f0af1Szrj {
276*dc4f0af1Szrj return(NULL);
277*dc4f0af1Szrj }
278*dc4f0af1Szrj *str = '\0';
279*dc4f0af1Szrj while (*++str == ' ') /* loop */;
280*dc4f0af1Szrj
281*dc4f0af1Szrj /* if there is nothing left of the string, return NULL */
282*dc4f0af1Szrj /* This fix is dedicated to Greg Earle */
283*dc4f0af1Szrj return(*str == '\0' ? NULL : str);
284*dc4f0af1Szrj }
285*dc4f0af1Szrj
286*dc4f0af1Szrj int
scanint(char * str,int * intp)287*dc4f0af1Szrj scanint(char *str, int *intp)
288*dc4f0af1Szrj
289*dc4f0af1Szrj {
290*dc4f0af1Szrj register int val = 0;
291*dc4f0af1Szrj register int ch;
292*dc4f0af1Szrj
293*dc4f0af1Szrj /* if there is nothing left of the string, flag it as an error */
294*dc4f0af1Szrj /* This fix is dedicated to Greg Earle */
295*dc4f0af1Szrj if (*str == '\0')
296*dc4f0af1Szrj {
297*dc4f0af1Szrj return(-1);
298*dc4f0af1Szrj }
299*dc4f0af1Szrj
300*dc4f0af1Szrj while ((ch = *str++) != '\0')
301*dc4f0af1Szrj {
302*dc4f0af1Szrj if (isdigit(ch))
303*dc4f0af1Szrj {
304*dc4f0af1Szrj val = val * 10 + (ch - '0');
305*dc4f0af1Szrj }
306*dc4f0af1Szrj else if (isspace(ch))
307*dc4f0af1Szrj {
308*dc4f0af1Szrj break;
309*dc4f0af1Szrj }
310*dc4f0af1Szrj else
311*dc4f0af1Szrj {
312*dc4f0af1Szrj return(-1);
313*dc4f0af1Szrj }
314*dc4f0af1Szrj }
315*dc4f0af1Szrj *intp = val;
316*dc4f0af1Szrj return(0);
317*dc4f0af1Szrj }
318*dc4f0af1Szrj
319*dc4f0af1Szrj /*
320*dc4f0af1Szrj * error_count() - return the number of errors currently logged.
321*dc4f0af1Szrj */
322*dc4f0af1Szrj
323*dc4f0af1Szrj int
error_count()324*dc4f0af1Szrj error_count()
325*dc4f0af1Szrj
326*dc4f0af1Szrj {
327*dc4f0af1Szrj return(errcnt);
328*dc4f0af1Szrj }
329*dc4f0af1Szrj
330*dc4f0af1Szrj /*
331*dc4f0af1Szrj * show_errors() - display on stdout the current log of errors.
332*dc4f0af1Szrj */
333*dc4f0af1Szrj
334*dc4f0af1Szrj void
show_errors()335*dc4f0af1Szrj show_errors()
336*dc4f0af1Szrj
337*dc4f0af1Szrj {
338*dc4f0af1Szrj register int cnt = 0;
339*dc4f0af1Szrj register struct errs *errp = errs;
340*dc4f0af1Szrj
341*dc4f0af1Szrj printf("%d error%s:\n\n", errcnt, errcnt == 1 ? "" : "s");
342*dc4f0af1Szrj while (cnt++ < errcnt)
343*dc4f0af1Szrj {
344*dc4f0af1Szrj printf("%5s: %s\n", errp->arg,
345*dc4f0af1Szrj errp->errnum == 0 ? "Not a number" : errmsg(errp->errnum));
346*dc4f0af1Szrj errp++;
347*dc4f0af1Szrj }
348*dc4f0af1Szrj }
349*dc4f0af1Szrj
350*dc4f0af1Szrj /*
351*dc4f0af1Szrj * kill_procs(str) - send signals to processes, much like the "kill"
352*dc4f0af1Szrj * command does; invoked in response to 'k'.
353*dc4f0af1Szrj */
354*dc4f0af1Szrj
355*dc4f0af1Szrj void
kill_procs(char * str)356*dc4f0af1Szrj kill_procs(char *str)
357*dc4f0af1Szrj
358*dc4f0af1Szrj {
359*dc4f0af1Szrj register char *nptr;
360*dc4f0af1Szrj int signum = SIGTERM; /* default */
361*dc4f0af1Szrj int procnum;
362*dc4f0af1Szrj int uid;
363*dc4f0af1Szrj int owner;
364*dc4f0af1Szrj #ifndef USE_SYS_SIGLIST
365*dc4f0af1Szrj struct sigdesc *sigp;
366*dc4f0af1Szrj #endif
367*dc4f0af1Szrj
368*dc4f0af1Szrj /* reset error array */
369*dc4f0af1Szrj ERR_RESET;
370*dc4f0af1Szrj
371*dc4f0af1Szrj /* remember our uid */
372*dc4f0af1Szrj uid = getuid();
373*dc4f0af1Szrj
374*dc4f0af1Szrj /* skip over leading white space */
375*dc4f0af1Szrj while (isspace((int)*str)) str++;
376*dc4f0af1Szrj
377*dc4f0af1Szrj if (str[0] == '-')
378*dc4f0af1Szrj {
379*dc4f0af1Szrj /* explicit signal specified */
380*dc4f0af1Szrj if ((nptr = next_field(str)) == NULL)
381*dc4f0af1Szrj {
382*dc4f0af1Szrj message_error(" kill: no processes specified");
383*dc4f0af1Szrj return;
384*dc4f0af1Szrj }
385*dc4f0af1Szrj
386*dc4f0af1Szrj str++;
387*dc4f0af1Szrj if (isdigit((int)str[0]))
388*dc4f0af1Szrj {
389*dc4f0af1Szrj (void) scanint(str, &signum);
390*dc4f0af1Szrj if (signum <= 0 || signum >= NSIG)
391*dc4f0af1Szrj {
392*dc4f0af1Szrj message_error(" kill: invalid signal number");
393*dc4f0af1Szrj return;
394*dc4f0af1Szrj }
395*dc4f0af1Szrj }
396*dc4f0af1Szrj else
397*dc4f0af1Szrj {
398*dc4f0af1Szrj /* translate the name into a number */
399*dc4f0af1Szrj #ifdef USE_SYS_SIGLIST
400*dc4f0af1Szrj for (signum = 1; signum < NSIG; signum++)
401*dc4f0af1Szrj {
402*dc4f0af1Szrj if (strcasecmp(sys_signame[signum], str) == 0)
403*dc4f0af1Szrj {
404*dc4f0af1Szrj break;
405*dc4f0af1Szrj }
406*dc4f0af1Szrj }
407*dc4f0af1Szrj if (signum == NSIG)
408*dc4f0af1Szrj {
409*dc4f0af1Szrj message_error(" kill: bad signal name");
410*dc4f0af1Szrj return;
411*dc4f0af1Szrj }
412*dc4f0af1Szrj #else
413*dc4f0af1Szrj for (sigp = sigdesc; sigp->name != NULL; sigp++)
414*dc4f0af1Szrj {
415*dc4f0af1Szrj #ifdef HAVE_STRCASECMP
416*dc4f0af1Szrj if (strcasecmp(sigp->name, str) == 0)
417*dc4f0af1Szrj #else
418*dc4f0af1Szrj if (strcmp(sigp->name, str) == 0)
419*dc4f0af1Szrj #endif
420*dc4f0af1Szrj {
421*dc4f0af1Szrj signum = sigp->number;
422*dc4f0af1Szrj break;
423*dc4f0af1Szrj }
424*dc4f0af1Szrj }
425*dc4f0af1Szrj
426*dc4f0af1Szrj /* was it ever found */
427*dc4f0af1Szrj if (sigp->name == NULL)
428*dc4f0af1Szrj {
429*dc4f0af1Szrj message_error(" kill: bad signal name");
430*dc4f0af1Szrj return;
431*dc4f0af1Szrj }
432*dc4f0af1Szrj #endif
433*dc4f0af1Szrj }
434*dc4f0af1Szrj /* put the new pointer in place */
435*dc4f0af1Szrj str = nptr;
436*dc4f0af1Szrj }
437*dc4f0af1Szrj
438*dc4f0af1Szrj /* loop thru the string, killing processes */
439*dc4f0af1Szrj do
440*dc4f0af1Szrj {
441*dc4f0af1Szrj if (scanint(str, &procnum) == -1)
442*dc4f0af1Szrj {
443*dc4f0af1Szrj ERROR(str, 0);
444*dc4f0af1Szrj }
445*dc4f0af1Szrj else
446*dc4f0af1Szrj {
447*dc4f0af1Szrj /* check process owner if we're not root */
448*dc4f0af1Szrj owner = proc_owner(procnum);
449*dc4f0af1Szrj if (uid && (uid != owner))
450*dc4f0af1Szrj {
451*dc4f0af1Szrj ERROR(str, owner == -1 ? ESRCH : EACCES);
452*dc4f0af1Szrj }
453*dc4f0af1Szrj /* go in for the kill */
454*dc4f0af1Szrj else if (kill(procnum, signum) == -1)
455*dc4f0af1Szrj {
456*dc4f0af1Szrj /* chalk up an error */
457*dc4f0af1Szrj ERROR(str, errno);
458*dc4f0af1Szrj }
459*dc4f0af1Szrj }
460*dc4f0af1Szrj } while ((str = next_field(str)) != NULL);
461*dc4f0af1Szrj
462*dc4f0af1Szrj /* process errors */
463*dc4f0af1Szrj err_string();
464*dc4f0af1Szrj }
465*dc4f0af1Szrj
466*dc4f0af1Szrj /*
467*dc4f0af1Szrj * renice_procs(str) - change the "nice" of processes, much like the
468*dc4f0af1Szrj * "renice" command does; invoked in response to 'r'.
469*dc4f0af1Szrj */
470*dc4f0af1Szrj
471*dc4f0af1Szrj void
renice_procs(char * str)472*dc4f0af1Szrj renice_procs(char *str)
473*dc4f0af1Szrj
474*dc4f0af1Szrj {
475*dc4f0af1Szrj register char negate;
476*dc4f0af1Szrj int prio;
477*dc4f0af1Szrj int procnum;
478*dc4f0af1Szrj int uid;
479*dc4f0af1Szrj
480*dc4f0af1Szrj ERR_RESET;
481*dc4f0af1Szrj uid = getuid();
482*dc4f0af1Szrj
483*dc4f0af1Szrj /* allow for negative priority values */
484*dc4f0af1Szrj if ((negate = (*str == '-')) != 0)
485*dc4f0af1Szrj {
486*dc4f0af1Szrj /* move past the minus sign */
487*dc4f0af1Szrj str++;
488*dc4f0af1Szrj }
489*dc4f0af1Szrj
490*dc4f0af1Szrj /* use procnum as a temporary holding place and get the number */
491*dc4f0af1Szrj procnum = scanint(str, &prio);
492*dc4f0af1Szrj
493*dc4f0af1Szrj /* negate if necessary */
494*dc4f0af1Szrj if (negate)
495*dc4f0af1Szrj {
496*dc4f0af1Szrj prio = -prio;
497*dc4f0af1Szrj }
498*dc4f0af1Szrj
499*dc4f0af1Szrj #if defined(PRIO_MIN) && defined(PRIO_MAX)
500*dc4f0af1Szrj /* check for validity */
501*dc4f0af1Szrj if (procnum == -1 || prio < PRIO_MIN || prio > PRIO_MAX)
502*dc4f0af1Szrj {
503*dc4f0af1Szrj message_error(" renice: bad priority value");
504*dc4f0af1Szrj }
505*dc4f0af1Szrj #endif
506*dc4f0af1Szrj
507*dc4f0af1Szrj /* move to the first process number */
508*dc4f0af1Szrj if ((str = next_field(str)) == NULL)
509*dc4f0af1Szrj {
510*dc4f0af1Szrj message_error(" remice: no processes specified");
511*dc4f0af1Szrj return;
512*dc4f0af1Szrj }
513*dc4f0af1Szrj
514*dc4f0af1Szrj #ifdef HAVE_SETPRIORITY
515*dc4f0af1Szrj /* loop thru the process numbers, renicing each one */
516*dc4f0af1Szrj do
517*dc4f0af1Szrj {
518*dc4f0af1Szrj if (scanint(str, &procnum) == -1)
519*dc4f0af1Szrj {
520*dc4f0af1Szrj ERROR(str, 0);
521*dc4f0af1Szrj }
522*dc4f0af1Szrj
523*dc4f0af1Szrj /* check process owner if we're not root */
524*dc4f0af1Szrj else if (uid && (uid != proc_owner(procnum)))
525*dc4f0af1Szrj {
526*dc4f0af1Szrj ERROR(str, EACCES);
527*dc4f0af1Szrj }
528*dc4f0af1Szrj else if (setpriority(PRIO_PROCESS, procnum, prio) == -1)
529*dc4f0af1Szrj {
530*dc4f0af1Szrj ERROR(str, errno);
531*dc4f0af1Szrj }
532*dc4f0af1Szrj } while ((str = next_field(str)) != NULL);
533*dc4f0af1Szrj err_string();
534*dc4f0af1Szrj #else
535*dc4f0af1Szrj message_error(" renice operation not supported");
536*dc4f0af1Szrj #endif
537*dc4f0af1Szrj }
538*dc4f0af1Szrj
539*dc4f0af1Szrj /* COMMAND ROUTINES */
540*dc4f0af1Szrj
541*dc4f0af1Szrj /*
542*dc4f0af1Szrj * Each command routine is called by command_process and is passed a
543*dc4f0af1Szrj * pointer to the current global state. Command routines are free
544*dc4f0af1Szrj * to change anything in the global state, although changes to the
545*dc4f0af1Szrj * statics structure are discouraged. Whatever a command routine
546*dc4f0af1Szrj * returns will be returned by command_process.
547*dc4f0af1Szrj */
548*dc4f0af1Szrj
549*dc4f0af1Szrj void
cmd_quit(globalstate * gstate)550*dc4f0af1Szrj cmd_quit(globalstate *gstate)
551*dc4f0af1Szrj
552*dc4f0af1Szrj {
553*dc4f0af1Szrj quit(EX_OK);
554*dc4f0af1Szrj /*NOTREACHED*/
555*dc4f0af1Szrj }
556*dc4f0af1Szrj
557*dc4f0af1Szrj int
cmd_update(globalstate * gstate)558*dc4f0af1Szrj cmd_update(globalstate *gstate)
559*dc4f0af1Szrj
560*dc4f0af1Szrj {
561*dc4f0af1Szrj /* go home for visual feedback */
562*dc4f0af1Szrj screen_home();
563*dc4f0af1Szrj fflush(stdout);
564*dc4f0af1Szrj message_expire();
565*dc4f0af1Szrj return CMD_REFRESH;
566*dc4f0af1Szrj }
567*dc4f0af1Szrj
568*dc4f0af1Szrj int
cmd_redraw(globalstate * gstate)569*dc4f0af1Szrj cmd_redraw(globalstate *gstate)
570*dc4f0af1Szrj
571*dc4f0af1Szrj {
572*dc4f0af1Szrj gstate->fulldraw = Yes;
573*dc4f0af1Szrj return CMD_REFRESH;
574*dc4f0af1Szrj }
575*dc4f0af1Szrj
576*dc4f0af1Szrj int
cmd_color(globalstate * gstate)577*dc4f0af1Szrj cmd_color(globalstate *gstate)
578*dc4f0af1Szrj
579*dc4f0af1Szrj {
580*dc4f0af1Szrj gstate->use_color = color_activate(-1);
581*dc4f0af1Szrj gstate->fulldraw = Yes;
582*dc4f0af1Szrj return CMD_REFRESH;
583*dc4f0af1Szrj }
584*dc4f0af1Szrj
585*dc4f0af1Szrj int
cmd_number(globalstate * gstate)586*dc4f0af1Szrj cmd_number(globalstate *gstate)
587*dc4f0af1Szrj
588*dc4f0af1Szrj {
589*dc4f0af1Szrj int newval;
590*dc4f0af1Szrj char tmpbuf[20];
591*dc4f0af1Szrj
592*dc4f0af1Szrj message_prompt("Number of processes to show: ");
593*dc4f0af1Szrj newval = readline(tmpbuf, 8, Yes);
594*dc4f0af1Szrj if (newval > -1)
595*dc4f0af1Szrj {
596*dc4f0af1Szrj #if 0
597*dc4f0af1Szrj if (newval > gstate->max_topn)
598*dc4f0af1Szrj {
599*dc4f0af1Szrj message_error(" This terminal can only display %d processes",
600*dc4f0af1Szrj gstate->max_topn);
601*dc4f0af1Szrj }
602*dc4f0af1Szrj #endif
603*dc4f0af1Szrj
604*dc4f0af1Szrj if (newval == 0)
605*dc4f0af1Szrj {
606*dc4f0af1Szrj /* inhibit the header */
607*dc4f0af1Szrj display_header(No);
608*dc4f0af1Szrj }
609*dc4f0af1Szrj
610*dc4f0af1Szrj else if (gstate->topn == 0)
611*dc4f0af1Szrj {
612*dc4f0af1Szrj display_header(Yes);
613*dc4f0af1Szrj }
614*dc4f0af1Szrj
615*dc4f0af1Szrj gstate->topn = newval;
616*dc4f0af1Szrj }
617*dc4f0af1Szrj return CMD_REFRESH;
618*dc4f0af1Szrj }
619*dc4f0af1Szrj
620*dc4f0af1Szrj int
cmd_delay(globalstate * gstate)621*dc4f0af1Szrj cmd_delay(globalstate *gstate)
622*dc4f0af1Szrj
623*dc4f0af1Szrj {
624*dc4f0af1Szrj int newval;
625*dc4f0af1Szrj char tmpbuf[20];
626*dc4f0af1Szrj
627*dc4f0af1Szrj message_prompt("Seconds to delay: ");
628*dc4f0af1Szrj if ((newval = readline(tmpbuf, 8, Yes)) > -1)
629*dc4f0af1Szrj {
630*dc4f0af1Szrj if ((gstate->delay = newval) == 0 && getuid() != 0)
631*dc4f0af1Szrj {
632*dc4f0af1Szrj gstate->delay = 1;
633*dc4f0af1Szrj }
634*dc4f0af1Szrj }
635*dc4f0af1Szrj return CMD_REFRESH;
636*dc4f0af1Szrj }
637*dc4f0af1Szrj
638*dc4f0af1Szrj int
cmd_idle(globalstate * gstate)639*dc4f0af1Szrj cmd_idle(globalstate *gstate)
640*dc4f0af1Szrj
641*dc4f0af1Szrj {
642*dc4f0af1Szrj gstate->pselect.idle = !gstate->pselect.idle;
643*dc4f0af1Szrj message_error(" %sisplaying idle processes.",
644*dc4f0af1Szrj gstate->pselect.idle ? "D" : "Not d");
645*dc4f0af1Szrj return CMD_REFRESH;
646*dc4f0af1Szrj }
647*dc4f0af1Szrj
648*dc4f0af1Szrj int
cmd_displays(globalstate * gstate)649*dc4f0af1Szrj cmd_displays(globalstate *gstate)
650*dc4f0af1Szrj
651*dc4f0af1Szrj {
652*dc4f0af1Szrj int i;
653*dc4f0af1Szrj char tmpbuf[20];
654*dc4f0af1Szrj
655*dc4f0af1Szrj message_prompt("Displays to show (currently %s): ",
656*dc4f0af1Szrj gstate->displays == -1 ? "infinite" :
657*dc4f0af1Szrj itoa(gstate->displays));
658*dc4f0af1Szrj
659*dc4f0af1Szrj if ((i = readline(tmpbuf, 10, Yes)) > 0)
660*dc4f0af1Szrj {
661*dc4f0af1Szrj gstate->displays = i;
662*dc4f0af1Szrj }
663*dc4f0af1Szrj else if (i == 0)
664*dc4f0af1Szrj {
665*dc4f0af1Szrj quit(EX_OK);
666*dc4f0af1Szrj /*NOTREACHED*/
667*dc4f0af1Szrj }
668*dc4f0af1Szrj return CMD_OK;
669*dc4f0af1Szrj }
670*dc4f0af1Szrj
671*dc4f0af1Szrj int
cmd_cmdline(globalstate * gstate)672*dc4f0af1Szrj cmd_cmdline(globalstate *gstate)
673*dc4f0af1Szrj
674*dc4f0af1Szrj {
675*dc4f0af1Szrj if (gstate->statics->flags.fullcmds)
676*dc4f0af1Szrj {
677*dc4f0af1Szrj gstate->pselect.fullcmd = !gstate->pselect.fullcmd;
678*dc4f0af1Szrj message_error(" %sisplaying full command lines.",
679*dc4f0af1Szrj gstate->pselect.fullcmd ? "D" : "Not d");
680*dc4f0af1Szrj return CMD_REFRESH;
681*dc4f0af1Szrj }
682*dc4f0af1Szrj message_error(" Full command display not supported.");
683*dc4f0af1Szrj return CMD_OK;
684*dc4f0af1Szrj }
685*dc4f0af1Szrj
686*dc4f0af1Szrj int
cmd_order(globalstate * gstate)687*dc4f0af1Szrj cmd_order(globalstate *gstate)
688*dc4f0af1Szrj
689*dc4f0af1Szrj {
690*dc4f0af1Szrj char tmpbuf[MAX_COLS];
691*dc4f0af1Szrj int i;
692*dc4f0af1Szrj
693*dc4f0af1Szrj if (gstate->statics->order_names != NULL)
694*dc4f0af1Szrj {
695*dc4f0af1Szrj message_prompt("Column to sort: ");
696*dc4f0af1Szrj if (readline(tmpbuf, sizeof(tmpbuf), No) > 0)
697*dc4f0af1Szrj {
698*dc4f0af1Szrj if ((i = string_index(tmpbuf, gstate->statics->order_names)) == -1)
699*dc4f0af1Szrj {
700*dc4f0af1Szrj message_error(" Sort order \"%s\" not recognized", tmpbuf);
701*dc4f0af1Szrj }
702*dc4f0af1Szrj else
703*dc4f0af1Szrj {
704*dc4f0af1Szrj gstate->order_index = i;
705*dc4f0af1Szrj return CMD_REFRESH;
706*dc4f0af1Szrj }
707*dc4f0af1Szrj }
708*dc4f0af1Szrj }
709*dc4f0af1Szrj return CMD_OK;
710*dc4f0af1Szrj }
711*dc4f0af1Szrj
712*dc4f0af1Szrj int
cmd_order_x(globalstate * gstate,char * name,...)713*dc4f0af1Szrj cmd_order_x(globalstate *gstate, char *name, ...)
714*dc4f0af1Szrj
715*dc4f0af1Szrj {
716*dc4f0af1Szrj va_list ap;
717*dc4f0af1Szrj char *p;
718*dc4f0af1Szrj char **names;
719*dc4f0af1Szrj int i;
720*dc4f0af1Szrj
721*dc4f0af1Szrj names = gstate->statics->order_names;
722*dc4f0af1Szrj if (names != NULL)
723*dc4f0af1Szrj {
724*dc4f0af1Szrj if ((i = string_index(name, names)) == -1)
725*dc4f0af1Szrj {
726*dc4f0af1Szrj /* check the alternate list */
727*dc4f0af1Szrj va_start(ap, name);
728*dc4f0af1Szrj p = va_arg(ap, char *);
729*dc4f0af1Szrj while (p != NULL)
730*dc4f0af1Szrj {
731*dc4f0af1Szrj if ((i = string_index(p, names)) != -1)
732*dc4f0af1Szrj {
733*dc4f0af1Szrj gstate->order_index = i;
734*dc4f0af1Szrj return CMD_REFRESH;
735*dc4f0af1Szrj }
736*dc4f0af1Szrj p = va_arg(ap, char *);
737*dc4f0af1Szrj }
738*dc4f0af1Szrj message_error(" Sort order not recognized");
739*dc4f0af1Szrj }
740*dc4f0af1Szrj else
741*dc4f0af1Szrj {
742*dc4f0af1Szrj gstate->order_index = i;
743*dc4f0af1Szrj return CMD_REFRESH;
744*dc4f0af1Szrj }
745*dc4f0af1Szrj }
746*dc4f0af1Szrj return CMD_OK;
747*dc4f0af1Szrj }
748*dc4f0af1Szrj
749*dc4f0af1Szrj int
cmd_order_cpu(globalstate * gstate)750*dc4f0af1Szrj cmd_order_cpu(globalstate *gstate)
751*dc4f0af1Szrj
752*dc4f0af1Szrj {
753*dc4f0af1Szrj return cmd_order_x(gstate, "cpu", NULL);
754*dc4f0af1Szrj }
755*dc4f0af1Szrj
756*dc4f0af1Szrj int
cmd_order_pid(globalstate * gstate)757*dc4f0af1Szrj cmd_order_pid(globalstate *gstate)
758*dc4f0af1Szrj
759*dc4f0af1Szrj {
760*dc4f0af1Szrj return cmd_order_x(gstate, "pid", NULL);
761*dc4f0af1Szrj }
762*dc4f0af1Szrj
763*dc4f0af1Szrj int
cmd_order_mem(globalstate * gstate)764*dc4f0af1Szrj cmd_order_mem(globalstate *gstate)
765*dc4f0af1Szrj
766*dc4f0af1Szrj {
767*dc4f0af1Szrj return cmd_order_x(gstate, "mem", "size", NULL);
768*dc4f0af1Szrj }
769*dc4f0af1Szrj
770*dc4f0af1Szrj int
cmd_order_time(globalstate * gstate)771*dc4f0af1Szrj cmd_order_time(globalstate *gstate)
772*dc4f0af1Szrj
773*dc4f0af1Szrj {
774*dc4f0af1Szrj return cmd_order_x(gstate, "time");
775*dc4f0af1Szrj }
776*dc4f0af1Szrj
777*dc4f0af1Szrj #ifdef ENABLE_KILL
778*dc4f0af1Szrj
779*dc4f0af1Szrj int
cmd_kill(globalstate * gstate)780*dc4f0af1Szrj cmd_kill(globalstate *gstate)
781*dc4f0af1Szrj
782*dc4f0af1Szrj {
783*dc4f0af1Szrj char tmpbuf[MAX_COLS];
784*dc4f0af1Szrj
785*dc4f0af1Szrj message_prompt_plain("kill ");
786*dc4f0af1Szrj if (readline(tmpbuf, sizeof(tmpbuf), No) > 0)
787*dc4f0af1Szrj {
788*dc4f0af1Szrj kill_procs(tmpbuf);
789*dc4f0af1Szrj }
790*dc4f0af1Szrj return CMD_OK;
791*dc4f0af1Szrj }
792*dc4f0af1Szrj
793*dc4f0af1Szrj int
cmd_renice(globalstate * gstate)794*dc4f0af1Szrj cmd_renice(globalstate *gstate)
795*dc4f0af1Szrj
796*dc4f0af1Szrj {
797*dc4f0af1Szrj char tmpbuf[MAX_COLS];
798*dc4f0af1Szrj
799*dc4f0af1Szrj message_prompt_plain("renice ");
800*dc4f0af1Szrj if (readline(tmpbuf, sizeof(tmpbuf), No) > 0)
801*dc4f0af1Szrj {
802*dc4f0af1Szrj renice_procs(tmpbuf);
803*dc4f0af1Szrj }
804*dc4f0af1Szrj return CMD_OK;
805*dc4f0af1Szrj }
806*dc4f0af1Szrj
807*dc4f0af1Szrj #endif
808*dc4f0af1Szrj
809*dc4f0af1Szrj int
cmd_user(globalstate * gstate)810*dc4f0af1Szrj cmd_user(globalstate *gstate)
811*dc4f0af1Szrj
812*dc4f0af1Szrj {
813*dc4f0af1Szrj char linebuf[MAX_COLS];
814*dc4f0af1Szrj int i;
815*dc4f0af1Szrj int ret = CMD_OK;
816*dc4f0af1Szrj
817*dc4f0af1Szrj message_prompt("Username to show: ");
818*dc4f0af1Szrj if (readline(linebuf, sizeof(linebuf), No) > 0)
819*dc4f0af1Szrj {
820*dc4f0af1Szrj if (linebuf[0] == '+' &&
821*dc4f0af1Szrj linebuf[1] == '\0')
822*dc4f0af1Szrj {
823*dc4f0af1Szrj gstate->pselect.uid = -1;
824*dc4f0af1Szrj ret = CMD_REFRESH;
825*dc4f0af1Szrj }
826*dc4f0af1Szrj else if ((i = userid(linebuf)) == -1)
827*dc4f0af1Szrj {
828*dc4f0af1Szrj message_error(" %s: unknown user", linebuf);
829*dc4f0af1Szrj }
830*dc4f0af1Szrj else
831*dc4f0af1Szrj {
832*dc4f0af1Szrj gstate->pselect.uid = i;
833*dc4f0af1Szrj ret = CMD_REFRESH;
834*dc4f0af1Szrj }
835*dc4f0af1Szrj }
836*dc4f0af1Szrj return ret;
837*dc4f0af1Szrj }
838*dc4f0af1Szrj
839*dc4f0af1Szrj int
cmd_command(globalstate * gstate)840*dc4f0af1Szrj cmd_command(globalstate *gstate)
841*dc4f0af1Szrj
842*dc4f0af1Szrj {
843*dc4f0af1Szrj char linebuf[MAX_COLS];
844*dc4f0af1Szrj
845*dc4f0af1Szrj if (gstate->pselect.command != NULL)
846*dc4f0af1Szrj {
847*dc4f0af1Szrj free(gstate->pselect.command);
848*dc4f0af1Szrj gstate->pselect.command = NULL;
849*dc4f0af1Szrj }
850*dc4f0af1Szrj
851*dc4f0af1Szrj message_prompt("Command to show: ");
852*dc4f0af1Szrj if (readline(linebuf, sizeof(linebuf), No) > 0)
853*dc4f0af1Szrj {
854*dc4f0af1Szrj if (linebuf[0] != '\0')
855*dc4f0af1Szrj {
856*dc4f0af1Szrj gstate->pselect.command = strdup(linebuf);
857*dc4f0af1Szrj }
858*dc4f0af1Szrj }
859*dc4f0af1Szrj return CMD_REFRESH;
860*dc4f0af1Szrj }
861*dc4f0af1Szrj
862*dc4f0af1Szrj int
cmd_useruid(globalstate * gstate)863*dc4f0af1Szrj cmd_useruid(globalstate *gstate)
864*dc4f0af1Szrj
865*dc4f0af1Szrj {
866*dc4f0af1Szrj gstate->pselect.usernames = !gstate->pselect.usernames;
867*dc4f0af1Szrj /* set constants for username/uid display */
868*dc4f0af1Szrj if (gstate->pselect.usernames)
869*dc4f0af1Szrj {
870*dc4f0af1Szrj gstate->header_text = format_header("USERNAME");
871*dc4f0af1Szrj gstate->get_userid = username;
872*dc4f0af1Szrj }
873*dc4f0af1Szrj else
874*dc4f0af1Szrj {
875*dc4f0af1Szrj gstate->header_text = format_header(" UID ");
876*dc4f0af1Szrj gstate->get_userid = itoa7;
877*dc4f0af1Szrj }
878*dc4f0af1Szrj display_header(2);
879*dc4f0af1Szrj return CMD_REFRESH;
880*dc4f0af1Szrj }
881*dc4f0af1Szrj
882*dc4f0af1Szrj int
cmd_mode(globalstate * gstate)883*dc4f0af1Szrj cmd_mode(globalstate *gstate)
884*dc4f0af1Szrj
885*dc4f0af1Szrj {
886*dc4f0af1Szrj if (gstate->statics->modemax <= 1)
887*dc4f0af1Szrj {
888*dc4f0af1Szrj return CMD_NA;
889*dc4f0af1Szrj }
890*dc4f0af1Szrj gstate->pselect.mode = (gstate->pselect.mode + 1) % gstate->statics->modemax;
891*dc4f0af1Szrj display_header(2);
892*dc4f0af1Szrj return CMD_REFRESH;
893*dc4f0af1Szrj }
894*dc4f0af1Szrj
895*dc4f0af1Szrj int
cmd_system(globalstate * gstate)896*dc4f0af1Szrj cmd_system(globalstate *gstate)
897*dc4f0af1Szrj
898*dc4f0af1Szrj {
899*dc4f0af1Szrj gstate->pselect.system = !gstate->pselect.system;
900*dc4f0af1Szrj display_header(2);
901*dc4f0af1Szrj return CMD_REFRESH;
902*dc4f0af1Szrj }
903*dc4f0af1Szrj
904*dc4f0af1Szrj int
cmd_threads(globalstate * gstate)905*dc4f0af1Szrj cmd_threads(globalstate *gstate)
906*dc4f0af1Szrj
907*dc4f0af1Szrj {
908*dc4f0af1Szrj if (gstate->statics->flags.threads)
909*dc4f0af1Szrj {
910*dc4f0af1Szrj gstate->pselect.threads = !gstate->pselect.threads;
911*dc4f0af1Szrj display_header(2);
912*dc4f0af1Szrj return CMD_REFRESH;
913*dc4f0af1Szrj }
914*dc4f0af1Szrj return CMD_NA;
915*dc4f0af1Szrj }
916*dc4f0af1Szrj
917*dc4f0af1Szrj /* forward reference for cmd_help, as it needs to see the command_table */
918*dc4f0af1Szrj int cmd_help(globalstate *gstate);
919*dc4f0af1Szrj
920*dc4f0af1Szrj /* command table */
921*dc4f0af1Szrj command command_table[] = {
922*dc4f0af1Szrj { '\014', cmd_redraw, "redraw screen" },
923*dc4f0af1Szrj { ' ', cmd_update, "update screen" },
924*dc4f0af1Szrj { '?', cmd_help, "help; show this text" },
925*dc4f0af1Szrj { 'h', cmd_help, NULL },
926*dc4f0af1Szrj { 'C', cmd_color, "toggle the use of color" },
927*dc4f0af1Szrj { 'H', cmd_threads, "toggle the display of individual threads" },
928*dc4f0af1Szrj { 't', cmd_threads, NULL },
929*dc4f0af1Szrj { 'M', cmd_order_mem, "sort by memory usage" },
930*dc4f0af1Szrj { 'N', cmd_order_pid, "sort by process id" },
931*dc4f0af1Szrj { 'P', cmd_order_cpu, "sort by CPU usage" },
932*dc4f0af1Szrj { 'S', cmd_system, "toggle the display of system processes" },
933*dc4f0af1Szrj { 'T', cmd_order_time, "sort by CPU time" },
934*dc4f0af1Szrj { 'U', cmd_useruid, "toggle the display of usernames or uids" },
935*dc4f0af1Szrj { 'c', cmd_command, "display processes by command name" },
936*dc4f0af1Szrj { 'd', cmd_displays, "change number of displays to show" },
937*dc4f0af1Szrj { 'f', cmd_cmdline, "toggle the display of full command paths" },
938*dc4f0af1Szrj { 'i', cmd_idle, "toggle the displaying of idle processes" },
939*dc4f0af1Szrj { 'I', cmd_idle, NULL },
940*dc4f0af1Szrj #ifdef ENABLE_KILL
941*dc4f0af1Szrj { 'k', cmd_kill, "kill processes; send a signal to a list of processes" },
942*dc4f0af1Szrj #endif
943*dc4f0af1Szrj { 'm', cmd_mode, "toggle between display modes" },
944*dc4f0af1Szrj { 'n', cmd_number, "change number of processes to display" },
945*dc4f0af1Szrj { '#', cmd_number, NULL },
946*dc4f0af1Szrj { 'o', cmd_order, "specify sort order (see below)" },
947*dc4f0af1Szrj { 'q', (int (*)(globalstate *))cmd_quit, "quit" },
948*dc4f0af1Szrj #ifdef ENABLE_KILL
949*dc4f0af1Szrj { 'r', cmd_renice, "renice a process" },
950*dc4f0af1Szrj #endif
951*dc4f0af1Szrj { 's', cmd_delay, "change number of seconds to delay between updates" },
952*dc4f0af1Szrj { 'u', cmd_user, "display processes for only one user (+ selects all users)" },
953*dc4f0af1Szrj { '\0', NULL, NULL },
954*dc4f0af1Szrj };
955*dc4f0af1Szrj
956*dc4f0af1Szrj int
cmd_help(globalstate * gstate)957*dc4f0af1Szrj cmd_help(globalstate *gstate)
958*dc4f0af1Szrj
959*dc4f0af1Szrj {
960*dc4f0af1Szrj command *c;
961*dc4f0af1Szrj char buf[12];
962*dc4f0af1Szrj char *p;
963*dc4f0af1Szrj char *help;
964*dc4f0af1Szrj
965*dc4f0af1Szrj display_pagerstart();
966*dc4f0af1Szrj
967*dc4f0af1Szrj display_pager("Top version %s, %s\n", version_string(), copyright);
968*dc4f0af1Szrj display_pager("Platform module: %s\n\n", MODULE);
969*dc4f0af1Szrj display_pager("A top users display for Unix\n\n");
970*dc4f0af1Szrj display_pager("These single-character commands are available:\n\n");
971*dc4f0af1Szrj
972*dc4f0af1Szrj c = command_table;
973*dc4f0af1Szrj while (c->cmd_func != NULL)
974*dc4f0af1Szrj {
975*dc4f0af1Szrj /* skip null help strings */
976*dc4f0af1Szrj if ((help = c->help) == NULL)
977*dc4f0af1Szrj {
978*dc4f0af1Szrj continue;
979*dc4f0af1Szrj }
980*dc4f0af1Szrj
981*dc4f0af1Szrj /* translate character in to something readable */
982*dc4f0af1Szrj if (c->ch < ' ')
983*dc4f0af1Szrj {
984*dc4f0af1Szrj buf[0] = '^';
985*dc4f0af1Szrj buf[1] = c->ch + '@';
986*dc4f0af1Szrj buf[2] = '\0';
987*dc4f0af1Szrj }
988*dc4f0af1Szrj else if (c->ch == ' ')
989*dc4f0af1Szrj {
990*dc4f0af1Szrj strcpy(buf, "<sp>");
991*dc4f0af1Szrj }
992*dc4f0af1Szrj else
993*dc4f0af1Szrj {
994*dc4f0af1Szrj buf[0] = c->ch;
995*dc4f0af1Szrj buf[1] = '\0';
996*dc4f0af1Szrj }
997*dc4f0af1Szrj
998*dc4f0af1Szrj /* if the next command is the same, fold them onto one line */
999*dc4f0af1Szrj if ((c+1)->cmd_func == c->cmd_func)
1000*dc4f0af1Szrj {
1001*dc4f0af1Szrj strcat(buf, " or ");
1002*dc4f0af1Szrj p = buf + strlen(buf);
1003*dc4f0af1Szrj *p++ = (c+1)->ch;
1004*dc4f0af1Szrj *p = '\0';
1005*dc4f0af1Szrj c++;
1006*dc4f0af1Szrj }
1007*dc4f0af1Szrj
1008*dc4f0af1Szrj display_pager("%-7s - %s\n", buf, help);
1009*dc4f0af1Szrj c++;
1010*dc4f0af1Szrj }
1011*dc4f0af1Szrj
1012*dc4f0af1Szrj display_pager("\nNot all commands are available on all systems.\n\n");
1013*dc4f0af1Szrj display_pager("Available sort orders: %s\n", gstate->order_namelist);
1014*dc4f0af1Szrj display_pagerend();
1015*dc4f0af1Szrj gstate->fulldraw = Yes;
1016*dc4f0af1Szrj return CMD_REFRESH;
1017*dc4f0af1Szrj }
1018*dc4f0af1Szrj
1019*dc4f0af1Szrj /*
1020*dc4f0af1Szrj * int command_process(globalstate *gstate, int cmd)
1021*dc4f0af1Szrj *
1022*dc4f0af1Szrj * Process the single-character command "cmd". The global state may
1023*dc4f0af1Szrj * be modified by the command to alter the output. Returns CMD_ERROR
1024*dc4f0af1Szrj * if there was a serious error that requires an immediate exit, CMD_OK
1025*dc4f0af1Szrj * to indicate success, CMD_REFRESH to indicate that the screen needs
1026*dc4f0af1Szrj * to be refreshed immediately, CMD_UNKNOWN when the command is not known,
1027*dc4f0af1Szrj * and CMD_NA when the command is not available. Error messages for
1028*dc4f0af1Szrj * CMD_NA and CMD_UNKNOWN must be handled by the caller.
1029*dc4f0af1Szrj */
1030*dc4f0af1Szrj
1031*dc4f0af1Szrj int
command_process(globalstate * gstate,int cmd)1032*dc4f0af1Szrj command_process(globalstate *gstate, int cmd)
1033*dc4f0af1Szrj
1034*dc4f0af1Szrj {
1035*dc4f0af1Szrj command *c;
1036*dc4f0af1Szrj
1037*dc4f0af1Szrj c = command_table;
1038*dc4f0af1Szrj while (c->cmd_func != NULL)
1039*dc4f0af1Szrj {
1040*dc4f0af1Szrj if (c->ch == cmd)
1041*dc4f0af1Szrj {
1042*dc4f0af1Szrj return (c->cmd_func)(gstate);
1043*dc4f0af1Szrj }
1044*dc4f0af1Szrj c++;
1045*dc4f0af1Szrj }
1046*dc4f0af1Szrj
1047*dc4f0af1Szrj return CMD_UNKNOWN;
1048*dc4f0af1Szrj }
1049