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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 #include <sys/param.h>
45 #include <sys/time.h>
46 #include <sys/resource.h>
47 #include <sys/stat.h>
48 #include <sys/sysctl.h>
49 #include <sys/vmmeter.h>
50
51 #include <ctype.h>
52 #include <err.h>
53 #include <errno.h>
54 #include <inttypes.h>
55 #include <locale.h>
56 #include <stdio.h>
57 #include <stdlib.h>
58 #include <string.h>
59 #include <unistd.h>
60
61 static int      aflag, bflag, dflag, eflag, hflag, iflag;
62 static int      Nflag, nflag, oflag, qflag, xflag, warncount;
63
64 static int      oidfmt(int *, int, char *, u_int *);
65 static void     parse(char *);
66 static int      show_var(int *, int);
67 static int      sysctl_all(int *oid, int len);
68 static int      name2oid(char *, int *);
69
70 static int      set_IK(const char *, int *);
71
72 static void
73 usage(void)
74 {
75
76         (void)fprintf(stderr, "%s\n%s\n",
77             "usage: sysctl [-bdehiNnoqx] name[=value] ...",
78             "       sysctl [-bdehNnoqx] -a");
79         exit(1);
80 }
81
82 int
83 main(int argc, char **argv)
84 {
85         int ch;
86
87         setlocale(LC_NUMERIC, "");
88         setbuf(stdout,0);
89         setbuf(stderr,0);
90
91         while ((ch = getopt(argc, argv, "AabdehiNnoqwxX")) != -1) {
92                 switch (ch) {
93                 case 'A':
94                         /* compatibility */
95                         aflag = oflag = 1;
96                         break;
97                 case 'a':
98                         aflag = 1;
99                         break;
100                 case 'b':
101                         bflag = 1;
102                         break;
103                 case 'd':
104                         dflag = 1;
105                         break;
106                 case 'e':
107                         eflag = 1;
108                         break;
109                 case 'h':
110                         hflag = 1;
111                         break;
112                 case 'i':
113                         iflag = 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
152         warncount = 0;
153         while (argc-- > 0)
154                 parse(*argv++);
155         exit(warncount);
156 }
157
158 /*
159  * Parse a name into a MIB entry.
160  * Lookup and print out the MIB entry if it exists.
161  * Set a new value if requested.
162  */
163 static void
164 parse(char *string)
165 {
166         int len, i, j;
167         void *newval = 0;
168         int intval;
169         unsigned int uintval;
170         long longval;
171         unsigned long ulongval;
172         size_t newsize = 0;
173         int64_t i64val;
174         uint64_t u64val;
175         int mib[CTL_MAXNAME];
176         char *cp, *bufp, buf[BUFSIZ], *endptr, fmt[BUFSIZ];
177         u_int kind;
178
179         bufp = buf;
180         if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ)
181                 errx(1, "oid too long: '%s'", string);
182         if ((cp = strchr(string, '=')) != NULL) {
183                 *strchr(buf, '=') = '\0';
184                 *cp++ = '\0';
185                 while (isspace(*cp))
186                         cp++;
187                 newval = cp;
188                 newsize = strlen(cp);
189         }
190         len = name2oid(bufp, mib);
191
192         if (len < 0) {
193                 if (iflag)
194                         return;
195                 if (qflag)
196                         exit(1);
197                 else
198                         errx(1, "unknown oid '%s'", bufp);
199         }
200
201         if (oidfmt(mib, len, fmt, &kind))
202                 err(1, "couldn't find format of oid '%s'", bufp);
203
204         if (newval == NULL) {
205                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
206                         if (dflag) {
207                                 i = show_var(mib, len);
208                                 if (!i && !bflag)
209                                         putchar('\n');
210                         }
211                         sysctl_all(mib, len);
212                 } else {
213                         i = show_var(mib, len);
214                         if (!i && !bflag)
215                                 putchar('\n');
216                 }
217         } else {
218                 if ((kind & CTLTYPE) == CTLTYPE_NODE)
219                         errx(1, "oid '%s' isn't a leaf node", bufp);
220
221                 if (!(kind & CTLFLAG_WR)) {
222                         if (kind & CTLFLAG_TUN) {
223                                 warnx("oid '%s' is a read only tunable", bufp);
224                                 errx(1, "Tunable values are set in /boot/loader.conf");
225                         } else {
226                                 errx(1, "oid '%s' is read only", bufp);
227                         }
228                 }
229
230                 if ((kind & CTLTYPE) == CTLTYPE_INT ||
231                     (kind & CTLTYPE) == CTLTYPE_UINT ||
232                     (kind & CTLTYPE) == CTLTYPE_LONG ||
233                     (kind & CTLTYPE) == CTLTYPE_ULONG ||
234                     (kind & CTLTYPE) == CTLTYPE_S64 ||
235                     (kind & CTLTYPE) == CTLTYPE_U64) {
236                         if (strlen(newval) == 0)
237                                 errx(1, "empty numeric value");
238                 }
239
240                 switch (kind & CTLTYPE) {
241                         case CTLTYPE_INT:
242                                 if (strcmp(fmt, "IK") == 0) {
243                                         if (!set_IK(newval, &intval))
244                                                 errx(1, "invalid value '%s'",
245                                                     (char *)newval);
246                                 } else {
247                                         intval = (int)strtol(newval, &endptr,
248                                             0);
249                                         if (endptr == newval || *endptr != '\0')
250                                                 errx(1, "invalid integer '%s'",
251                                                     (char *)newval);
252                                 }
253                                 newval = &intval;
254                                 newsize = sizeof(intval);
255                                 break;
256                         case CTLTYPE_UINT:
257                                 uintval = (int) strtoul(newval, &endptr, 0);
258                                 if (endptr == newval || *endptr != '\0')
259                                         errx(1, "invalid unsigned integer '%s'",
260                                             (char *)newval);
261                                 newval = &uintval;
262                                 newsize = sizeof(uintval);
263                                 break;
264                         case CTLTYPE_LONG:
265                                 longval = strtol(newval, &endptr, 0);
266                                 if (endptr == newval || *endptr != '\0')
267                                         errx(1, "invalid long integer '%s'",
268                                             (char *)newval);
269                                 newval = &longval;
270                                 newsize = sizeof(longval);
271                                 break;
272                         case CTLTYPE_ULONG:
273                                 ulongval = strtoul(newval, &endptr, 0);
274                                 if (endptr == newval || *endptr != '\0')
275                                         errx(1, "invalid unsigned long integer"
276                                             " '%s'", (char *)newval);
277                                 newval = &ulongval;
278                                 newsize = sizeof(ulongval);
279                                 break;
280                         case CTLTYPE_STRING:
281                                 break;
282                         case CTLTYPE_S64:
283                                 i64val = strtoimax(newval, &endptr, 0);
284                                 if (endptr == newval || *endptr != '\0')
285                                         errx(1, "invalid int64_t '%s'",
286                                             (char *)newval);
287                                 newval = &i64val;
288                                 newsize = sizeof(i64val);
289                                 break;
290                         case CTLTYPE_U64:
291                                 u64val = strtoumax(newval, &endptr, 0);
292                                 if (endptr == newval || *endptr != '\0')
293                                         errx(1, "invalid uint64_t '%s'",
294                                             (char *)newval);
295                                 newval = &u64val;
296                                 newsize = sizeof(u64val);
297                                 break;
298                         case CTLTYPE_OPAQUE:
299                                 /* FALLTHROUGH */
300                         default:
301                                 errx(1, "oid '%s' is type %d,"
302                                         " cannot set that", bufp,
303                                         kind & CTLTYPE);
304                 }
305
306                 i = show_var(mib, len);
307                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
308                         if (!i && !bflag)
309                                 putchar('\n');
310                         switch (errno) {
311                         case EOPNOTSUPP:
312                                 errx(1, "%s: value is not available",
313                                         string);
314                         case ENOTDIR:
315                                 errx(1, "%s: specification is incomplete",
316                                         string);
317                         case ENOMEM:
318                                 errx(1, "%s: type is unknown to this program",
319                                         string);
320                         default:
321                                 warn("%s", string);
322                                 warncount++;
323                                 return;
324                         }
325                 }
326                 if (!bflag)
327                         printf(" -> ");
328                 i = nflag;
329                 nflag = 1;
330                 j = show_var(mib, len);
331                 if (!j && !bflag)
332                         putchar('\n');
333                 nflag = i;
334         }
335 }
336
337 /* These functions will dump out various interesting structures. */
338
339 static int
340 S_clockinfo(int l2, void *p)
341 {
342         struct clockinfo *ci = (struct clockinfo*)p;
343
344         if (l2 != sizeof(*ci)) {
345                 warnx("S_clockinfo %d != %zu", l2, sizeof(*ci));
346                 return (1);
347         }
348         printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
349                 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
350                 ci->hz, ci->tick, ci->profhz, ci->stathz);
351         return (0);
352 }
353
354 static int
355 S_loadavg(int l2, void *p)
356 {
357         struct loadavg *tv = (struct loadavg*)p;
358
359         if (l2 != sizeof(*tv)) {
360                 warnx("S_loadavg %d != %zu", l2, sizeof(*tv));
361                 return (1);
362         }
363         printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
364                 (double)tv->ldavg[0]/(double)tv->fscale,
365                 (double)tv->ldavg[1]/(double)tv->fscale,
366                 (double)tv->ldavg[2]/(double)tv->fscale);
367         return (0);
368 }
369
370 static int
371 S_timeval(int l2, void *p)
372 {
373         struct timeval *tv = (struct timeval*)p;
374         time_t tv_sec;
375         char *p1, *p2;
376
377         if (l2 != sizeof(*tv)) {
378                 warnx("S_timeval %d != %zu", l2, sizeof(*tv));
379                 return (1);
380         }
381         printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
382                 "{ sec = %jd, usec = %ld } ",
383                 (intmax_t)tv->tv_sec, tv->tv_usec);
384         tv_sec = tv->tv_sec;
385         p1 = strdup(ctime(&tv_sec));
386         for (p2=p1; *p2 ; p2++)
387                 if (*p2 == '\n')
388                         *p2 = '\0';
389         fputs(p1, stdout);
390         free(p1);
391         return (0);
392 }
393
394 static int
395 S_vmtotal(int l2, void *p)
396 {
397         struct vmtotal *v = (struct vmtotal *)p;
398         int pageKilo = getpagesize() / 1024;
399
400         if (l2 != sizeof(*v)) {
401                 warnx("S_vmtotal %d != %zu", l2, sizeof(*v));
402                 return (1);
403         }
404
405         printf(
406             "\nSystem wide totals computed every five seconds:"
407             " (values in kilobytes)\n");
408         printf("===============================================\n");
409         printf(
410             "Processes:\t\t(RUNQ: %hd Disk Wait: %hd Page Wait: "
411             "%hd Sleep: %hd)\n",
412             v->t_rq, v->t_dw, v->t_pw, v->t_sl);
413         printf(
414             "Virtual Memory:\t\t(Total: %dK Active: %dK)\n",
415             v->t_vm * pageKilo, v->t_avm * pageKilo);
416         printf("Real Memory:\t\t(Total: %dK Active: %dK)\n",
417             v->t_rm * pageKilo, v->t_arm * pageKilo);
418         printf("Shared Virtual Memory:\t(Total: %dK Active: %dK)\n",
419             v->t_vmshr * pageKilo, v->t_avmshr * pageKilo);
420         printf("Shared Real Memory:\t(Total: %dK Active: %dK)\n",
421             v->t_rmshr * pageKilo, v->t_armshr * pageKilo);
422         printf("Free Memory Pages:\t%dK\n", v->t_free * pageKilo);
423
424         return (0);
425 }
426
427 static int
428 set_IK(const char *str, int *val)
429 {
430         float temp;
431         int len, kelv;
432         const char *p;
433         char *endptr;
434
435         if ((len = strlen(str)) == 0)
436                 return (0);
437         p = &str[len - 1];
438         if (*p == 'C' || *p == 'F') {
439                 temp = strtof(str, &endptr);
440                 if (endptr == str || endptr != p)
441                         return (0);
442                 if (*p == 'F')
443                         temp = (temp - 32) * 5 / 9;
444                 kelv = temp * 10 + 2732;
445         } else {
446                 kelv = (int)strtol(str, &endptr, 10);
447                 if (endptr == str || *endptr != '\0')
448                         return (0);
449         }
450         *val = kelv;
451         return (1);
452 }
453
454 /*
455  * These functions uses a presently undocumented interface to the kernel
456  * to walk the tree and get the type so it can print the value.
457  * This interface is under work and consideration, and should probably
458  * be killed with a big axe by the first person who can find the time.
459  * (be aware though, that the proper interface isn't as obvious as it
460  * may seem, there are various conflicting requirements.
461  */
462
463 static int
464 name2oid(char *name, int *oidp)
465 {
466         int oid[2];
467         int i;
468         size_t j;
469
470         oid[0] = 0;
471         oid[1] = 3;
472
473         j = CTL_MAXNAME * sizeof(int);
474         i = sysctl(oid, 2, oidp, &j, name, strlen(name));
475         if (i < 0)
476                 return (i);
477         j /= sizeof(int);
478         return (j);
479 }
480
481 static int
482 oidfmt(int *oid, int len, char *fmt, u_int *kind)
483 {
484         int qoid[CTL_MAXNAME+2];
485         u_char buf[BUFSIZ];
486         int i;
487         size_t j;
488
489         qoid[0] = 0;
490         qoid[1] = 4;
491         memcpy(qoid + 2, oid, len * sizeof(int));
492
493         j = sizeof(buf);
494         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
495         if (i)
496                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
497
498         if (kind)
499                 *kind = *(u_int *)buf;
500
501         if (fmt)
502                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
503         return (0);
504 }
505
506 static int ctl_sign[CTLTYPE+1] = {
507         [CTLTYPE_INT] = 1,
508         [CTLTYPE_LONG] = 1,
509         [CTLTYPE_S64] = 1,
510 };
511
512 static int ctl_size[CTLTYPE+1] = {
513         [CTLTYPE_INT] = sizeof(int),
514         [CTLTYPE_UINT] = sizeof(u_int),
515         [CTLTYPE_LONG] = sizeof(long),
516         [CTLTYPE_ULONG] = sizeof(u_long),
517         [CTLTYPE_S64] = sizeof(int64_t),
518         [CTLTYPE_U64] = sizeof(int64_t),
519 };
520
521 /*
522  * This formats and outputs the value of one variable
523  *
524  * Returns zero if anything was actually output.
525  * Returns one if didn't know what to do with this.
526  * Return minus one if we had errors.
527  */
528 static int
529 show_var(int *oid, int nlen)
530 {
531         u_char buf[BUFSIZ], *val, *oval, *p;
532         char name[BUFSIZ], *fmt;
533         const char *sep, *sep1;
534         int qoid[CTL_MAXNAME+2];
535         uintmax_t umv;
536         intmax_t mv;
537         int i, hexlen, sign, ctltype;
538         size_t intlen;
539         size_t j, len;
540         u_int kind;
541         int (*func)(int, void *);
542
543         /* Silence GCC. */
544         umv = mv = intlen = 0;
545
546         bzero(buf, BUFSIZ);
547         bzero(name, BUFSIZ);
548         qoid[0] = 0;
549         memcpy(qoid + 2, oid, nlen * sizeof(int));
550
551         qoid[1] = 1;
552         j = sizeof(name);
553         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
554         if (i || !j)
555                 err(1, "sysctl name %d %zu %d", i, j, errno);
556
557         if (Nflag) {
558                 printf("%s", name);
559                 return (0);
560         }
561
562         if (eflag)
563                 sep = "=";
564         else
565                 sep = ": ";
566
567         if (dflag) {    /* just print description */
568                 qoid[1] = 5;
569                 j = sizeof(buf);
570                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
571                 if (!nflag)
572                         printf("%s%s", name, sep);
573                 printf("%s", buf);
574                 return (0);
575         }
576         /* find an estimate of how much we need for this var */
577         j = 0;
578         i = sysctl(oid, nlen, 0, &j, 0, 0);
579         j += j; /* we want to be sure :-) */
580
581         val = oval = malloc(j + 1);
582         if (val == NULL) {
583                 warnx("malloc failed");
584                 return (1);
585         }
586         len = j;
587         i = sysctl(oid, nlen, val, &len, 0, 0);
588         if (i || !len) {
589                 free(oval);
590                 return (1);
591         }
592
593         if (bflag) {
594                 fwrite(val, 1, len, stdout);
595                 free(oval);
596                 return (0);
597         }
598         val[len] = '\0';
599         fmt = buf;
600         oidfmt(oid, nlen, fmt, &kind);
601         p = val;
602         ctltype = (kind & CTLTYPE);
603         sign = ctl_sign[ctltype];
604         intlen = ctl_size[ctltype];
605
606         switch (ctltype) {
607         case CTLTYPE_STRING:
608                 if (!nflag)
609                         printf("%s%s", name, sep);
610                 printf("%.*s", (int)len, p);
611                 free(oval);
612                 return (0);
613
614         case CTLTYPE_INT:
615         case CTLTYPE_UINT:
616         case CTLTYPE_LONG:
617         case CTLTYPE_ULONG:
618         case CTLTYPE_S64:
619         case CTLTYPE_U64:
620                 if (!nflag)
621                         printf("%s%s", name, sep);
622                 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
623                 sep1 = "";
624                 while (len >= intlen) {
625                         switch (kind & CTLTYPE) {
626                         case CTLTYPE_INT:
627                         case CTLTYPE_UINT:
628                                 umv = *(u_int *)p;
629                                 mv = *(int *)p;
630                                 break;
631                         case CTLTYPE_LONG:
632                         case CTLTYPE_ULONG:
633                                 umv = *(u_long *)p;
634                                 mv = *(long *)p;
635                                 break;
636                         case CTLTYPE_S64:
637                         case CTLTYPE_U64:
638                                 umv = *(uint64_t *)p;
639                                 mv = *(int64_t *)p;
640                                 break;
641                         }
642                         fputs(sep1, stdout);
643                         if (xflag)
644                                 printf("%#0*jx", hexlen, umv);
645                         else if (!sign)
646                                 printf(hflag ? "%'ju" : "%ju", umv);
647                         else if (fmt[1] == 'K') {
648                                 if (mv < 0)
649                                         printf("%jd", mv);
650                                 else
651                                         printf("%.1fC", (mv - 2732.0) / 10);
652                         } else
653                                 printf(hflag ? "%'jd" : "%jd", mv);
654                         sep1 = " ";
655                         len -= intlen;
656                         p += intlen;
657                 }
658                 free(oval);
659                 return (0);
660
661         case CTLTYPE_OPAQUE:
662                 i = 0;
663                 if (strcmp(fmt, "S,clockinfo") == 0)
664                         func = S_clockinfo;
665                 else if (strcmp(fmt, "S,timeval") == 0)
666                         func = S_timeval;
667                 else if (strcmp(fmt, "S,loadavg") == 0)
668                         func = S_loadavg;
669                 else if (strcmp(fmt, "S,vmtotal") == 0)
670                         func = S_vmtotal;
671                 else
672                         func = NULL;
673                 if (func) {
674                         if (!nflag)
675                                 printf("%s%s", name, sep);
676                         i = (*func)(len, p);
677                         free(oval);
678                         return (i);
679                 }
680                 /* FALLTHROUGH */
681         default:
682                 if (!oflag && !xflag) {
683                         free(oval);
684                         return (1);
685                 }
686                 if (!nflag)
687                         printf("%s%s", name, sep);
688                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
689                 while (len-- && (xflag || p < val + 16))
690                         printf("%02x", *p++);
691                 if (!xflag && len > 16)
692                         printf("...");
693                 free(oval);
694                 return (0);
695         }
696         free(oval);
697         return (1);
698 }
699
700 static int
701 sysctl_all(int *oid, int len)
702 {
703         int name1[22], name2[22];
704         int i, j;
705         size_t l1, l2;
706
707         name1[0] = 0;
708         name1[1] = 2;
709         l1 = 2;
710         if (len) {
711                 memcpy(name1+2, oid, len * sizeof(int));
712                 l1 += len;
713         } else {
714                 name1[2] = 1;
715                 l1++;
716         }
717         for (;;) {
718                 l2 = sizeof(name2);
719                 j = sysctl(name1, l1, name2, &l2, 0, 0);
720                 if (j < 0) {
721                         if (errno == ENOENT)
722                                 return (0);
723                         else
724                                 err(1, "sysctl(getnext) %d %zu", j, l2);
725                 }
726
727                 l2 /= sizeof(int);
728
729                 if (len < 0 || l2 < (unsigned int)len)
730                         return (0);
731
732                 for (i = 0; i < len; i++)
733                         if (name2[i] != oid[i])
734                                 return (0);
735
736                 i = show_var(name2, l2);
737                 if (!i && !bflag)
738                         putchar('\n');
739
740                 memcpy(name1+2, name2, l2 * sizeof(int));
741                 l1 = 2 + l2;
742         }
743 }