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1 /*
2  * Copyright (c) 1993
3  *      The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 4. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29
30 #ifndef lint
31 static const char copyright[] =
32 "@(#) Copyright (c) 1993\n\
33         The Regents of the University of California.  All rights reserved.\n";
34 #endif /* not lint */
35
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)from: sysctl.c      8.1 (Berkeley) 6/6/93";
39 #endif
40 static const char rcsid[] =
41   "$FreeBSD$";
42 #endif /* not lint */
43
44 #ifdef __i386__
45 #include <sys/reboot.h>         /* used for bootdev parsing */
46 #endif
47 #include <sys/param.h>
48 #include <sys/time.h>
49 #include <sys/resource.h>
50 #include <sys/stat.h>
51 #include <sys/sysctl.h>
52 #include <sys/vmmeter.h>
53
54 #include <ctype.h>
55 #include <err.h>
56 #include <errno.h>
57 #include <locale.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include <unistd.h>
62
63 static int      aflag, bflag, dflag, eflag, hflag, Nflag, nflag, oflag;
64 static int      qflag, xflag;
65
66 static int      oidfmt(int *, int, char *, u_int *);
67 static void     parse(char *);
68 static int      show_var(int *, int);
69 static int      sysctl_all (int *oid, int len);
70 static int      name2oid(char *, int *);
71
72 static void     set_T_dev_t (char *, void **, size_t *);
73 static int      set_IK(char *, int *);
74
75 static void
76 usage(void)
77 {
78
79         (void)fprintf(stderr, "%s\n%s\n",
80             "usage: sysctl [-bdehNnoqx] name[=value] ...",
81             "       sysctl [-bdehNnoqx] -a");
82         exit(1);
83 }
84
85 int
86 main(int argc, char **argv)
87 {
88         int ch;
89
90         setlocale(LC_NUMERIC, "");
91         setbuf(stdout,0);
92         setbuf(stderr,0);
93
94         while ((ch = getopt(argc, argv, "AabdehNnoqwxX")) != -1) {
95                 switch (ch) {
96                 case 'A':
97                         /* compatibility */
98                         aflag = oflag = 1;
99                         break;
100                 case 'a':
101                         aflag = 1;
102                         break;
103                 case 'b':
104                         bflag = 1;
105                         break;
106                 case 'd':
107                         dflag = 1;
108                         break;
109                 case 'e':
110                         eflag = 1;
111                         break;
112                 case 'h':
113                         hflag = 1;
114                         break;
115                 case 'N':
116                         Nflag = 1;
117                         break;
118                 case 'n':
119                         nflag = 1;
120                         break;
121                 case 'o':
122                         oflag = 1;
123                         break;
124                 case 'q':
125                         qflag = 1;
126                         break;
127                 case 'w':
128                         /* compatibility */
129                         /* ignored */
130                         break;
131                 case 'X':
132                         /* compatibility */
133                         aflag = xflag = 1;
134                         break;
135                 case 'x':
136                         xflag = 1;
137                         break;
138                 default:
139                         usage();
140                 }
141         }
142         argc -= optind;
143         argv += optind;
144
145         if (Nflag && nflag)
146                 usage();
147         if (aflag && argc == 0)
148                 exit(sysctl_all(0, 0));
149         if (argc == 0)
150                 usage();
151         while (argc-- > 0)
152                 parse(*argv++);
153         exit(0);
154 }
155
156 /*
157  * Parse a name into a MIB entry.
158  * Lookup and print out the MIB entry if it exists.
159  * Set a new value if requested.
160  */
161 static void
162 parse(char *string)
163 {
164         int len, i, j;
165         void *newval = 0;
166         int intval;
167         unsigned int uintval;
168         long longval;
169         unsigned long ulongval;
170         size_t newsize = 0;
171         quad_t quadval;
172         int mib[CTL_MAXNAME];
173         char *cp, *bufp, buf[BUFSIZ], *endptr, fmt[BUFSIZ];
174         u_int kind;
175
176         bufp = buf;
177         if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ)
178                 errx(1, "oid too long: '%s'", string);
179         if ((cp = strchr(string, '=')) != NULL) {
180                 *strchr(buf, '=') = '\0';
181                 *cp++ = '\0';
182                 while (isspace(*cp))
183                         cp++;
184                 newval = cp;
185                 newsize = strlen(cp);
186         }
187         len = name2oid(bufp, mib);
188
189         if (len < 0) {
190                 if (qflag)
191                         exit(1);
192                 else
193                         errx(1, "unknown oid '%s'", bufp);
194         }
195
196         if (oidfmt(mib, len, fmt, &kind))
197                 err(1, "couldn't find format of oid '%s'", bufp);
198
199         if (newval == NULL) {
200                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
201                         if (dflag) {
202                                 i = show_var(mib, len);
203                                 if (!i && !bflag)
204                                         putchar('\n');
205                         }
206                         sysctl_all(mib, len);
207                 } else {
208                         i = show_var(mib, len);
209                         if (!i && !bflag)
210                                 putchar('\n');
211                 }
212         } else {
213                 if ((kind & CTLTYPE) == CTLTYPE_NODE)
214                         errx(1, "oid '%s' isn't a leaf node", bufp);
215
216                 if (!(kind & CTLFLAG_WR)) {
217                         if (kind & CTLFLAG_TUN) {
218                                 warnx("oid '%s' is a read only tunable", bufp);
219                                 errx(1, "Tunable values are set in /boot/loader.conf");
220                         } else {
221                                 errx(1, "oid '%s' is read only", bufp);
222                         }
223                 }
224
225                 if ((kind & CTLTYPE) == CTLTYPE_INT ||
226                     (kind & CTLTYPE) == CTLTYPE_UINT ||
227                     (kind & CTLTYPE) == CTLTYPE_LONG ||
228                     (kind & CTLTYPE) == CTLTYPE_ULONG ||
229                     (kind & CTLTYPE) == CTLTYPE_QUAD) {
230                         if (strlen(newval) == 0)
231                                 errx(1, "empty numeric value");
232                 }
233
234                 switch (kind & CTLTYPE) {
235                         case CTLTYPE_INT:
236                                 if (strcmp(fmt, "IK") == 0) {
237                                         if (!set_IK((char*)newval, &intval))
238                                                 errx(1, "invalid value '%s'",
239                                                     newval);
240                                 } else {
241                                         intval = (int)strtol(newval, &endptr,
242                                             0);
243                                         if (endptr == newval || *endptr != '\0')
244                                                 errx(1, "invalid integer '%s'",
245                                                     newval);
246                                 }
247                                 newval = &intval;
248                                 newsize = sizeof(intval);
249                                 break;
250                         case CTLTYPE_UINT:
251                                 uintval = (int) strtoul(newval, &endptr, 0);
252                                 if (endptr == newval || *endptr != '\0')
253                                         errx(1, "invalid unsigned integer '%s'",
254                                             newval);
255                                 newval = &uintval;
256                                 newsize = sizeof uintval;
257                                 break;
258                         case CTLTYPE_LONG:
259                                 longval = strtol(newval, &endptr, 0);
260                                 if (endptr == newval || *endptr != '\0')
261                                         errx(1, "invalid long integer '%s'",
262                                             newval);
263                                 newval = &longval;
264                                 newsize = sizeof longval;
265                                 break;
266                         case CTLTYPE_ULONG:
267                                 ulongval = strtoul(newval, &endptr, 0);
268                                 if (endptr == newval || *endptr != '\0')
269                                         errx(1, "invalid unsigned long integer"
270                                             " '%s'", newval);
271                                 newval = &ulongval;
272                                 newsize = sizeof ulongval;
273                                 break;
274                         case CTLTYPE_STRING:
275                                 break;
276                         case CTLTYPE_QUAD:
277                                 sscanf(newval, "%qd", &quadval);
278                                 newval = &quadval;
279                                 newsize = sizeof(quadval);
280                                 break;
281                         case CTLTYPE_OPAQUE:
282                                 if (strcmp(fmt, "T,dev_t") == 0) {
283                                         set_T_dev_t ((char*)newval, &newval, &newsize);
284                                         break;
285                                 }
286                                 /* FALLTHROUGH */
287                         default:
288                                 errx(1, "oid '%s' is type %d,"
289                                         " cannot set that", bufp,
290                                         kind & CTLTYPE);
291                 }
292
293                 i = show_var(mib, len);
294                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
295                         if (!i && !bflag)
296                                 putchar('\n');
297                         switch (errno) {
298                         case EOPNOTSUPP:
299                                 errx(1, "%s: value is not available",
300                                         string);
301                         case ENOTDIR:
302                                 errx(1, "%s: specification is incomplete",
303                                         string);
304                         case ENOMEM:
305                                 errx(1, "%s: type is unknown to this program",
306                                         string);
307                         default:
308                                 warn("%s", string);
309                                 return;
310                         }
311                 }
312                 if (!bflag)
313                         printf(" -> ");
314                 i = nflag;
315                 nflag = 1;
316                 j = show_var(mib, len);
317                 if (!j && !bflag)
318                         putchar('\n');
319                 nflag = i;
320         }
321 }
322
323 /* These functions will dump out various interesting structures. */
324
325 static int
326 S_clockinfo(int l2, void *p)
327 {
328         struct clockinfo *ci = (struct clockinfo*)p;
329         if (l2 != sizeof(*ci)) {
330                 warnx("S_clockinfo %d != %d", l2, sizeof(*ci));
331                 return (0);
332         }
333         printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
334                 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
335                 ci->hz, ci->tick, ci->profhz, ci->stathz);
336         return (0);
337 }
338
339 static int
340 S_loadavg(int l2, void *p)
341 {
342         struct loadavg *tv = (struct loadavg*)p;
343
344         if (l2 != sizeof(*tv)) {
345                 warnx("S_loadavg %d != %d", l2, sizeof(*tv));
346                 return (0);
347         }
348         printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
349                 (double)tv->ldavg[0]/(double)tv->fscale,
350                 (double)tv->ldavg[1]/(double)tv->fscale,
351                 (double)tv->ldavg[2]/(double)tv->fscale);
352         return (0);
353 }
354
355 static int
356 S_timeval(int l2, void *p)
357 {
358         struct timeval *tv = (struct timeval*)p;
359         time_t tv_sec;
360         char *p1, *p2;
361
362         if (l2 != sizeof(*tv)) {
363                 warnx("S_timeval %d != %d", l2, sizeof(*tv));
364                 return (0);
365         }
366         printf(hflag ? "{ sec = %'ld, usec = %'ld } " :
367                 "{ sec = %ld, usec = %ld } ",
368                 tv->tv_sec, tv->tv_usec);
369         tv_sec = tv->tv_sec;
370         p1 = strdup(ctime(&tv_sec));
371         for (p2=p1; *p2 ; p2++)
372                 if (*p2 == '\n')
373                         *p2 = '\0';
374         fputs(p1, stdout);
375         return (0);
376 }
377
378 static int
379 S_vmtotal(int l2, void *p)
380 {
381         struct vmtotal *v = (struct vmtotal *)p;
382         int pageKilo = getpagesize() / 1024;
383
384         if (l2 != sizeof(*v)) {
385                 warnx("S_vmtotal %d != %d", l2, sizeof(*v));
386                 return (0);
387         }
388
389         printf(
390             "\nSystem wide totals computed every five seconds:"
391             " (values in kilobytes)\n");
392         printf("===============================================\n");
393         printf(
394             "Processes:\t\t(RUNQ: %hd Disk Wait: %hd Page Wait: "
395             "%hd Sleep: %hd)\n",
396             v->t_rq, v->t_dw, v->t_pw, v->t_sl);
397         printf(
398             "Virtual Memory:\t\t(Total: %dK, Active %dK)\n",
399             v->t_vm * pageKilo, v->t_avm * pageKilo);
400         printf("Real Memory:\t\t(Total: %dK Active %dK)\n",
401             v->t_rm * pageKilo, v->t_arm * pageKilo);
402         printf("Shared Virtual Memory:\t(Total: %dK Active: %dK)\n",
403             v->t_vmshr * pageKilo, v->t_avmshr * pageKilo);
404         printf("Shared Real Memory:\t(Total: %dK Active: %dK)\n",
405             v->t_rmshr * pageKilo, v->t_armshr * pageKilo);
406         printf("Free Memory Pages:\t%dK\n", v->t_free * pageKilo);
407
408         return (0);
409 }
410
411 static int
412 T_dev_t(int l2, void *p)
413 {
414         dev_t *d = (dev_t *)p;
415         if (l2 != sizeof(*d)) {
416                 warnx("T_dev_T %d != %d", l2, sizeof(*d));
417                 return (0);
418         }
419         if ((int)(*d) != -1) {
420                 if (minor(*d) > 255 || minor(*d) < 0)
421                         printf("{ major = %d, minor = 0x%x }",
422                                 major(*d), minor(*d));
423                 else
424                         printf("{ major = %d, minor = %d }",
425                                 major(*d), minor(*d));
426         }
427         return (0);
428 }
429
430 static void
431 set_T_dev_t (char *path, void **val, size_t *size)
432 {
433         static struct stat statb;
434
435         if (strcmp(path, "none") && strcmp(path, "off")) {
436                 int rc = stat (path, &statb);
437                 if (rc) {
438                         err(1, "cannot stat %s", path);
439                 }
440
441                 if (!S_ISCHR(statb.st_mode)) {
442                         errx(1, "must specify a device special file.");
443                 }
444         } else {
445                 statb.st_rdev = NODEV;
446         }
447         *val = (char*) &statb.st_rdev;
448         *size = sizeof statb.st_rdev;
449 }
450
451 static int
452 set_IK(char *str, int *val)
453 {
454         float temp;
455         int len, kelv;
456         char *p, *endptr;
457
458         if ((len = strlen(str)) == 0)
459                 return (0);
460         p = &str[len - 1];
461         if (*p == 'C' || *p == 'F') {
462                 *p = '\0';
463                 temp = strtof(str, &endptr);
464                 if (endptr == str || *endptr != '\0')
465                         return (0);
466                 if (*p == 'F')
467                         temp = (temp - 32) * 5 / 9;
468                 kelv = temp * 10 + 2732;
469         } else {
470                 kelv = (int)strtol(str, &endptr, 10);
471                 if (endptr == str || *endptr != '\0')
472                         return (0);
473         }
474         *val = kelv;
475         return (1);
476 }
477
478 /*
479  * These functions uses a presently undocumented interface to the kernel
480  * to walk the tree and get the type so it can print the value.
481  * This interface is under work and consideration, and should probably
482  * be killed with a big axe by the first person who can find the time.
483  * (be aware though, that the proper interface isn't as obvious as it
484  * may seem, there are various conflicting requirements.
485  */
486
487 static int
488 name2oid(char *name, int *oidp)
489 {
490         int oid[2];
491         int i;
492         size_t j;
493
494         oid[0] = 0;
495         oid[1] = 3;
496
497         j = CTL_MAXNAME * sizeof(int);
498         i = sysctl(oid, 2, oidp, &j, name, strlen(name));
499         if (i < 0)
500                 return i;
501         j /= sizeof(int);
502         return (j);
503 }
504
505 static int
506 oidfmt(int *oid, int len, char *fmt, u_int *kind)
507 {
508         int qoid[CTL_MAXNAME+2];
509         u_char buf[BUFSIZ];
510         int i;
511         size_t j;
512
513         qoid[0] = 0;
514         qoid[1] = 4;
515         memcpy(qoid + 2, oid, len * sizeof(int));
516
517         j = sizeof(buf);
518         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
519         if (i)
520                 err(1, "sysctl fmt %d %d %d", i, j, errno);
521
522         if (kind)
523                 *kind = *(u_int *)buf;
524
525         if (fmt)
526                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
527         return 0;
528 }
529
530 /*
531  * This formats and outputs the value of one variable
532  *
533  * Returns zero if anything was actually output.
534  * Returns one if didn't know what to do with this.
535  * Return minus one if we had errors.
536  */
537
538 static int
539 show_var(int *oid, int nlen)
540 {
541         u_char buf[BUFSIZ], *val, *oval, *p;
542         char name[BUFSIZ], *fmt, *sep;
543         int qoid[CTL_MAXNAME+2];
544         int i;
545         size_t j, len;
546         u_int kind;
547         int (*func)(int, void *);
548
549         bzero(buf, BUFSIZ);
550         bzero(name, BUFSIZ);
551         qoid[0] = 0;
552         memcpy(qoid + 2, oid, nlen * sizeof(int));
553
554         qoid[1] = 1;
555         j = sizeof(name);
556         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
557         if (i || !j)
558                 err(1, "sysctl name %d %d %d", i, j, errno);
559
560         if (Nflag) {
561                 printf("%s", name);
562                 return (0);
563         }
564
565         if (eflag)
566                 sep = "=";
567         else
568                 sep = ": ";
569
570         if (dflag) {    /* just print description */
571                 qoid[1] = 5;
572                 j = sizeof(buf);
573                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
574                 if (!nflag)
575                         printf("%s%s", name, sep);
576                 printf("%s", buf);
577                 return (0);
578         }
579         /* find an estimate of how much we need for this var */
580         j = 0;
581         i = sysctl(oid, nlen, 0, &j, 0, 0);
582         j += j; /* we want to be sure :-) */
583
584         val = oval = malloc(j + 1);
585         if (val == NULL) {
586                 warnx("malloc failed");
587                 return (-1);
588         }
589         len = j;
590         i = sysctl(oid, nlen, val, &len, 0, 0);
591         if (i || !len) {
592                 free(oval);
593                 return (1);
594         }
595
596         if (bflag) {
597                 fwrite(val, 1, len, stdout);
598                 free(oval);
599                 return (0);
600         }
601         val[len] = '\0';
602         fmt = buf;
603         oidfmt(oid, nlen, fmt, &kind);
604         p = val;
605         switch (*fmt) {
606         case 'A':
607                 if (!nflag)
608                         printf("%s%s", name, sep);
609                 printf("%.*s", len, p);
610                 free(oval);
611                 return (0);
612
613         case 'I':
614                 if (!nflag)
615                         printf("%s%s", name, sep);
616                 fmt++;
617                 val = "";
618                 while (len >= sizeof(int)) {
619                         fputs(val, stdout);
620                         if (*fmt == 'U')
621                                 printf(hflag ? "%'u" : "%u", *(u_int *)p);
622                         else if (*fmt == 'X')
623                                 printf(hflag ? "%'#010x" : "%#010x",
624                                     *(unsigned int *)p);
625                         else if (*fmt == 'K') {
626                                 if (*(int *)p < 0)
627                                         printf("%d", *(int *)p);
628                                 else
629                                         printf("%.1fC",
630                                             (*(int *)p - 2732.0) / 10);
631                         } else
632                                 printf(hflag ? "%'d" : "%d", *(int *)p);
633                         val = " ";
634                         len -= sizeof(int);
635                         p += sizeof(int);
636                 }
637                 free(oval);
638                 return (0);
639
640         case 'L':
641                 if (!nflag)
642                         printf("%s%s", name, sep);
643                 fmt++;
644                 val = "";
645                 while (len >= sizeof(long)) {
646                         fputs(val, stdout);
647                         if (*fmt == 'U')
648                                 printf(hflag ? "%'lu" : "%lu", *(u_long *)p);
649                         else if (*fmt == 'X')
650                                 printf(hflag ? "%'#018lx" : "%#018lx",
651                                   *(u_long *)p);
652                         else if (*fmt == 'K') {
653                                 if (*(long *)p < 0)
654                                         printf("%ld", *(long *)p);
655                                 else
656                                         printf("%.1fC",
657                                             (*(long *)p - 2732.0) / 10);
658                         } else
659                                 printf(hflag ? "%'ld" : "%ld", *(long *)p);
660                         val = " ";
661                         len -= sizeof(long);
662                         p += sizeof(long);
663                 }
664                 free(oval);
665                 return (0);
666
667         case 'P':
668                 if (!nflag)
669                         printf("%s%s", name, sep);
670                 printf("%p", *(void **)p);
671                 free(oval);
672                 return (0);
673
674         case 'T':
675         case 'S':
676                 i = 0;
677                 if (strcmp(fmt, "S,clockinfo") == 0)
678                         func = S_clockinfo;
679                 else if (strcmp(fmt, "S,timeval") == 0)
680                         func = S_timeval;
681                 else if (strcmp(fmt, "S,loadavg") == 0)
682                         func = S_loadavg;
683                 else if (strcmp(fmt, "S,vmtotal") == 0)
684                         func = S_vmtotal;
685                 else if (strcmp(fmt, "T,dev_t") == 0)
686                         func = T_dev_t;
687                 else
688                         func = NULL;
689                 if (func) {
690                         if (!nflag)
691                                 printf("%s%s", name, sep);
692                         i = (*func)(len, p);
693                         free(oval);
694                         return (i);
695                 }
696                 /* FALLTHROUGH */
697         default:
698                 if (!oflag && !xflag) {
699                         free(oval);
700                         return (1);
701                 }
702                 if (!nflag)
703                         printf("%s%s", name, sep);
704                 printf("Format:%s Length:%d Dump:0x", fmt, len);
705                 while (len-- && (xflag || p < val + 16))
706                         printf("%02x", *p++);
707                 if (!xflag && len > 16)
708                         printf("...");
709                 free(oval);
710                 return (0);
711         }
712         free(oval);
713         return (1);
714 }
715
716 static int
717 sysctl_all (int *oid, int len)
718 {
719         int name1[22], name2[22];
720         int i, j;
721         size_t l1, l2;
722
723         name1[0] = 0;
724         name1[1] = 2;
725         l1 = 2;
726         if (len) {
727                 memcpy(name1+2, oid, len * sizeof(int));
728                 l1 += len;
729         } else {
730                 name1[2] = 1;
731                 l1++;
732         }
733         for (;;) {
734                 l2 = sizeof(name2);
735                 j = sysctl(name1, l1, name2, &l2, 0, 0);
736                 if (j < 0) {
737                         if (errno == ENOENT)
738                                 return 0;
739                         else
740                                 err(1, "sysctl(getnext) %d %d", j, l2);
741                 }
742
743                 l2 /= sizeof(int);
744
745                 if (l2 < len)
746                         return 0;
747
748                 for (i = 0; i < len; i++)
749                         if (name2[i] != oid[i])
750                                 return 0;
751
752                 i = show_var(name2, l2);
753                 if (!i && !bflag)
754                         putchar('\n');
755
756                 memcpy(name1+2, name2, l2 * sizeof(int));
757                 l1 = 2 + l2;
758         }
759 }