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dmake: do not set MAKEFLAGS=k
[unleashed/tickless.git] / usr / src / cmd / autopush / autopush.c
blob676bbcd13fbbd1baf30ef2a05309c8ef14c7f412
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28
29
30 /*
31 * autopush(1) is the command interface to the STREAMS autopush
32 * mechanism. The autopush command can be used to configure autopush
33 * information about a STREAMS driver, remove autopush information,
34 * and report on current configuration information. Its use is as
35 * follows:
36 *
37 * autopush -f file
38 * autopush -r -M major -m minor
39 * autopush -g -M major -m minor
40 *
41 * The -f option allows autopush information to be set from a file. The
42 * format of the file is as follows:
43 *
44 * # Comment lines begin with a # in column one.
45 * # The fields are separated by white space and are:
46 * # major minor lastminor module1 module2 ... module8
47 *
48 * "lastminor" is used to configure ranges of minor devices, from "minor"
49 * to "lastminor" inclusive. It should be set to zero when not in use.
50 * The -r option allows autopush information to be removed for the given
51 * major/minor pair. The -g option allows the configuration information
52 * to be printed. The format of printing is the same as for the file.
53 */
54
55 /*
56 * Use autopush version 1; keep before #include <sys/sad.h>.
57 * See <sys/sad.h> for details.
58 */
59 #define AP_VERSION 1
60
61 #include <sys/types.h>
62 #include <sys/conf.h>
63 #include <sys/modctl.h>
64 #include <sys/sad.h>
65 #include <stdio.h>
66 #include <fcntl.h>
67 #include <errno.h>
68 #include <ctype.h>
69 #include <stdlib.h>
70 #include <unistd.h>
71 #include <string.h>
72 #include <locale.h>
73 #include <sys/stat.h>
74 #include <zone.h>
75
76 #define OPTIONS "M:f:gm:r" /* command line options for getopt(3C) */
77 #define COMMENT '#'
78 #define MINUS '-'
79 #define SLASH '/'
80
81 /*
82 * Output format.
83 */
84 #define OHEADER " Major Minor Lastminor\tModules\n"
85 #define OFORMAT1_ONE "%10ld %10ld - \t"
86 #define OFORMAT1_RANGE "%10ld %10ld %10ld\t"
87 #define OFORMAT1_ALL "%10ld ALL - \t"
88
89 #define AP_ANCHOR "[anchor]"
90
91 #define Openerr gettext("%s: ERROR: Could not open %s: ")
92 #define Digiterr gettext("%s: ERROR: argument to %s option must be " \
93 "numeric\n")
94 #define Badline gettext("%s: WARNING: File %s: bad input line %d " \
95 "ignored\n")
96
97 static void usage();
98 static int rem_info(), get_info(), set_info();
99 static int is_white_space(), parse_line();
100
101 static char *Cmdp; /* command name */
102
103 /*
104 * main():
105 * process command line arguments.
106 */
107 int
108 main(int argc, char *argv[])
109 {
110 int c; /* character read by getopt(3C) */
111 char *filenamep; /* name of configuration file */
112 major_t major; /* major device number */
113 minor_t minor; /* minor device number */
114 char *cp;
115 int exitcode;
116 ushort_t minflag = 0; /* -m option used */
117 ushort_t majflag = 0; /* -M option used */
118 ushort_t fflag = 0; /* -f option used */
119 ushort_t rflag = 0; /* -r option used */
120 ushort_t gflag = 0; /* -g option used */
121 ushort_t errflag = 0; /* options usage error */
122
123 (void) setlocale(LC_ALL, "");
124 #if !defined(TEXT_DOMAIN)
125 #define TEXT_DOMAIN "SYS_TEST"
126 #endif
127 (void) textdomain(TEXT_DOMAIN);
128
129 /*
130 * Get command name.
131 */
132 Cmdp = argv[0];
133 for (filenamep = argv[0]; *filenamep; filenamep++)
134 if (*filenamep == SLASH)
135 Cmdp = filenamep + 1;
136
137 /*
138 * Get options.
139 */
140 while (!errflag && ((c = getopt(argc, argv, OPTIONS)) != -1)) {
141 switch (c) {
142 case 'M':
143 if (fflag|majflag)
144 errflag++;
145 else {
146 majflag++;
147 for (cp = optarg; *cp; cp++)
148 if (!isdigit(*cp)) {
149 (void) fprintf(stderr,
150 Digiterr, Cmdp, "-M");
151 exit(1);
152 }
153 major = (major_t)atol(optarg);
154 }
155 break;
156
157 case 'm':
158 if (fflag|minflag)
159 errflag++;
160 else {
161 minflag++;
162 for (cp = optarg; *cp; cp++)
163 if (!isdigit(*cp)) {
164 (void) fprintf(stderr,
165 Digiterr, Cmdp, "-m");
166 exit(1);
167 }
168 minor = (minor_t)atol(optarg);
169 }
170 break;
171
172 case 'f':
173 if (fflag|gflag|rflag|majflag|minflag)
174 errflag++;
175 else {
176 fflag++;
177 filenamep = optarg;
178 }
179 break;
180
181 case 'r':
182 if (fflag|gflag|rflag)
183 errflag++;
184 else
185 rflag++;
186 break;
187
188 case 'g':
189 if (fflag|gflag|rflag)
190 errflag++;
191 else
192 gflag++;
193 break;
194
195 default:
196 errflag++;
197 break;
198 } /* switch */
199 if (errflag) {
200 usage();
201 exit(1);
202 }
203 } /* while */
204 if (((gflag || rflag) && (!majflag || !minflag)) || (optind != argc)) {
205 usage();
206 exit(1);
207 }
208
209 if (getzoneid() != GLOBAL_ZONEID) {
210 (void) fprintf(stderr, gettext("autopush "
211 "can only be run from the global zone.\n"));
212 exit(1);
213 }
214
215 if (fflag)
216 exitcode = set_info(filenamep);
217 else if (rflag)
218 exitcode = rem_info(major, minor);
219 else if (gflag)
220 exitcode = get_info(major, minor);
221 else {
222 usage();
223 exit(1);
224 }
225
226 return (exitcode);
227 }
228
229 /*
230 * usage():
231 * print out usage statement.
232 */
233 static void
234 usage()
235 {
236 (void) fprintf(stderr, gettext("%s: USAGE:\n\t%s -f filename\n"
237 "\t%s -r -M major -m minor\n"
238 "\t%s -g -M major -m minor\n"), Cmdp, Cmdp, Cmdp, Cmdp);
239 }
240
241 /*
242 * set_info():
243 * set autopush configuration information.
244 * namep: autopush configuration filename
245 */
246 static int
247 set_info(char *namep)
248 {
249 int line; /* line number of file */
250 FILE *fp; /* file pointer of config file */
251 char buf[256]; /* input buffer */
252 struct strapush push; /* configuration information */
253 int sadfd; /* file descriptor to SAD driver */
254 int retcode = 0; /* return code */
255 int parsecode; /* return value from parse function */
256
257 if ((sadfd = open(ADMINDEV, O_RDWR)) < 0) {
258 (void) fprintf(stderr, Openerr, Cmdp, ADMINDEV);
259 perror("");
260 return (1);
261 }
262 if ((fp = fopen(namep, "r")) == NULL) {
263 (void) fprintf(stderr, Openerr, Cmdp, namep);
264 perror("");
265 return (1);
266 }
267 line = 0;
268 while (fgets(buf, sizeof (buf), fp) != NULL) {
269 line++;
270 if ((buf[0] == COMMENT) || is_white_space(buf))
271 continue;
272 (void) memset(&push, 0, sizeof (struct strapush));
273
274 parsecode = parse_line(buf, line, namep, &push);
275 if (parsecode != 0) {
276 retcode = parsecode;
277 continue;
278 }
279
280 if (push.sap_minor == (minor_t)-1)
281 push.sap_cmd = SAP_ALL;
282 else if (push.sap_lastminor == 0)
283 push.sap_cmd = SAP_ONE;
284 else
285 push.sap_cmd = SAP_RANGE;
286
287 if (ioctl(sadfd, SAD_SAP, &push) < 0) {
288 int error = errno;
289
290 retcode = 1;
291 (void) fprintf(stderr,
292 gettext("%s: ERROR: File %s: could not configure "
293 "autopush for line %d\n"), Cmdp, namep, line);
294 switch (error) {
295 case EPERM:
296 (void) fprintf(stderr, gettext("%s: ERROR: "
297 "You don't have permission to set autopush "
298 "information\n"), Cmdp);
299 break;
300
301 case EINVAL:
302 (void) fprintf(stderr, gettext("%s: ERROR: "
303 "Invalid major device number or invalid "
304 "module name or too many modules\n"), Cmdp);
305 break;
306
307 case ENOSTR:
308 (void) fprintf(stderr, gettext("%s: ERROR: "
309 "Major device is not a STREAMS "
310 "driver\n"), Cmdp);
311 break;
312
313 case EEXIST:
314 (void) fprintf(stderr, gettext("%s: ERROR: "
315 "Major/minor already configured\n"), Cmdp);
316 break;
317
318 case ENOSR:
319 (void) fprintf(stderr, gettext("%s: ERROR: Ran "
320 "out of autopush structures\n"), Cmdp);
321 break;
322
323 case ERANGE:
324 (void) fprintf(stderr, gettext("%s: ERROR: "
325 "lastminor must be greater than minor\n"),
326 Cmdp);
327 break;
328
329 default:
330 (void) fprintf(stderr, gettext("%s: ERROR: "),
331 Cmdp);
332 (void) fprintf(stderr, "%s\n", strerror(error));
333 break;
334 } /* switch */
335 } /* if */
336 } /* while */
337 return (retcode);
338 }
339
340 /*
341 * rem_info():
342 * remove autopush configuration information.
343 */
344 static int
345 rem_info(major_t maj, minor_t min)
346 {
347 struct strapush push; /* configuration information */
348 int sadfd; /* file descriptor to SAD driver */
349 int retcode = 0; /* return code */
350
351 if ((sadfd = open(ADMINDEV, O_RDWR)) < 0) {
352 (void) fprintf(stderr, Openerr, Cmdp, ADMINDEV);
353 perror("");
354 return (1);
355 }
356 push.sap_cmd = SAP_CLEAR;
357 push.sap_minor = min;
358 push.sap_major = maj;
359
360 if (ioctl(sadfd, SAD_SAP, &push) < 0) {
361 int error = errno;
362
363 retcode = 1;
364 (void) fprintf(stderr, gettext("%s: ERROR: Could not remove "
365 "autopush information\n"), Cmdp);
366 switch (error) {
367 case EPERM:
368 (void) fprintf(stderr, gettext("%s: ERROR: You don't "
369 "have permission to remove autopush "
370 "information\n"), Cmdp);
371 break;
372
373 case EINVAL:
374 if ((min != 0) && (ioctl(sadfd, SAD_GAP, &push) == 0) &&
375 (push.sap_cmd == SAP_ALL))
376 (void) fprintf(stderr, gettext("%s: ERROR: "
377 "When removing an entry for ALL minors, "
378 "minor must be set to 0\n"), Cmdp);
379 else
380 (void) fprintf(stderr, gettext("%s: ERROR: "
381 "Invalid major device number\n"), Cmdp);
382 break;
383
384 case ENODEV:
385 (void) fprintf(stderr, gettext("%s: ERROR: Major/minor "
386 "not configured for autopush\n"), Cmdp);
387 break;
388
389 case ERANGE:
390 (void) fprintf(stderr, gettext("%s: ERROR: minor must "
391 "be set to begining of range when clearing\n"),
392 Cmdp);
393 break;
394
395 default:
396 (void) fprintf(stderr, gettext("%s: ERROR: "), Cmdp);
397 (void) fprintf(stderr, "%s\n", strerror(error));
398 break;
399 } /* switch */
400 }
401 return (retcode);
402 }
403
404 /*
405 * get_info():
406 * get autopush configuration information.
407 */
408 static int
409 get_info(major_t maj, minor_t min)
410 {
411 struct strapush push; /* configuration information */
412 int i; /* counter */
413 int sadfd; /* file descriptor to SAD driver */
414
415 if ((sadfd = open(USERDEV, O_RDWR)) < 0) {
416 (void) fprintf(stderr, Openerr, Cmdp, USERDEV);
417 perror("");
418 return (1);
419 }
420 push.sap_major = maj;
421 push.sap_minor = min;
422
423 if (ioctl(sadfd, SAD_GAP, &push) < 0) {
424 int error = errno;
425
426 (void) fprintf(stderr, gettext("%s: ERROR: Could not get "
427 "autopush information\n"), Cmdp);
428 switch (error) {
429 case EINVAL:
430 (void) fprintf(stderr, gettext("%s: ERROR: Invalid "
431 "major device number\n"), Cmdp);
432 break;
433
434 case ENOSTR:
435 (void) fprintf(stderr, gettext("%s: ERROR: Major "
436 "device is not a STREAMS driver\n"), Cmdp);
437 break;
438
439 case ENODEV:
440 (void) fprintf(stderr, gettext("%s: ERROR: Major/minor "
441 "not configured for autopush\n"), Cmdp);
442 break;
443
444 default:
445 (void) fprintf(stderr, gettext("%s: ERROR: "), Cmdp);
446 (void) fprintf(stderr, "%s\n", strerror(error));
447 break;
448 } /* switch */
449 return (1);
450 }
451 (void) printf(OHEADER);
452 switch (push.sap_cmd) {
453 case SAP_ONE:
454 (void) printf(OFORMAT1_ONE, push.sap_major, push.sap_minor);
455 break;
456
457 case SAP_RANGE:
458 (void) printf(OFORMAT1_RANGE, push.sap_major, push.sap_minor,
459 push.sap_lastminor);
460 break;
461
462 case SAP_ALL:
463 (void) printf(OFORMAT1_ALL, push.sap_major);
464 break;
465
466 default:
467 (void) fprintf(stderr,
468 gettext("%s: ERROR: Unknown configuration type\n"), Cmdp);
469 return (1);
470 }
471
472 for (i = 0; i < push.sap_npush; i++) {
473
474 (void) printf("%s", push.sap_list[i]);
475
476 if (push.sap_anchor == (i + 1))
477 (void) printf(" %s", AP_ANCHOR);
478
479 if (i < push.sap_npush - 1)
480 (void) printf(" ");
481
482 }
483
484 (void) printf("\n");
485 return (0);
486 }
487
488 /*
489 * is_white_space():
490 * Return 1 if buffer is all white space.
491 * Return 0 otherwise.
492 */
493 static int
494 is_white_space(char *bufp)
495 {
496 while (*bufp) {
497 if (!isspace(*bufp))
498 return (0);
499 bufp++;
500 }
501 return (1);
502 }
503
504 /*
505 * parse_line():
506 * Parse input line from file and report any errors found. Fill
507 * strapush structure along the way. Returns 1 if the line has
508 * errors and 0 if the line is well-formed. Another hidden
509 * dependency on MAXAPUSH. `linep' is the input buffer, `lineno'
510 * is the current line number, and `namep' is the filename.
511 */
512 static int
513 parse_line(char *linep, int lineno, char *namep, struct strapush *pushp)
514 {
515 char *wp; /* word pointer */
516 char *cp; /* character pointer */
517 int midx; /* module index */
518 int npush; /* number of modules to push */
519 char c;
520 major_t major_num;
521
522 pushp->sap_anchor = 0; /* by default, no anchor */
523
524 /*
525 * Find the major device number.
526 */
527 for (wp = linep; isspace(*wp); wp++)
528 ;
529 for (cp = wp; !isspace(*cp); cp++)
530 ;
531 if (!isspace(*cp)) {
532 (void) fprintf(stderr, Badline, Cmdp, namep, lineno);
533 return (1);
534 }
535 c = *cp;
536 *cp = '\0';
537 if (modctl(MODGETMAJBIND, wp, strlen(wp) + 1, &major_num) != 0) {
538 (void) fprintf(stderr, Badline, Cmdp, namep, lineno);
539 return (1);
540 }
541 *cp = c;
542 pushp->sap_major = major_num;
543
544 /*
545 * Find the minor device number. Must handle negative values here.
546 */
547 for (wp = cp; isspace(*wp); wp++)
548 ;
549 for (cp = wp; (isdigit(*cp) || (*cp == MINUS)); cp++)
550 ;
551 if (!isspace(*cp)) {
552 (void) fprintf(stderr, Badline, Cmdp, namep, lineno);
553 return (1);
554 }
555 pushp->sap_minor = (minor_t)atol(wp);
556
557 /*
558 * Find the lastminor.
559 */
560 for (wp = cp; isspace(*wp); wp++)
561 ;
562 for (cp = wp; isdigit(*cp); cp++)
563 ;
564 if (!isspace(*cp)) {
565 (void) fprintf(stderr, Badline, Cmdp, namep, lineno);
566 return (1);
567 }
568 pushp->sap_lastminor = (minor_t)atol(wp);
569
570 /*
571 * Read the list of module names.
572 */
573 npush = 0;
574 while ((npush < MAXAPUSH) && (*cp)) {
575
576 while (isspace(*cp))
577 cp++;
578
579 if (strncasecmp(cp, AP_ANCHOR, sizeof (AP_ANCHOR) - 1) == 0) {
580 if (pushp->sap_anchor != 0) {
581 (void) fprintf(stderr,
582 gettext("%s: ERROR: File %s: more than "
583 "one anchor in line, line %d ignored\n"),
584 Cmdp, namep, lineno);
585 return (1);
586 }
587 if (npush == 0)
588 (void) fprintf(stderr,
589 gettext("%s: WARNING: File %s: anchor at "
590 "beginning of stream on line %d ignored\n"),
591 Cmdp, namep, lineno);
592 pushp->sap_anchor = npush;
593 cp += sizeof (AP_ANCHOR) - 1;
594 continue;
595 }
596
597 for (midx = 0; !isspace(*cp) && *cp; midx++) {
598 if (midx == FMNAMESZ) {
599 (void) fprintf(stderr, gettext("%s: ERROR: "
600 "File %s: module name too long, line %d "
601 "ignored\n"), Cmdp, namep, lineno);
602 return (1);
603 }
604 pushp->sap_list[npush][midx] = *cp++;
605 }
606
607 if (midx > 0) {
608 pushp->sap_list[npush][midx] = '\0';
609 npush++;
610 }
611 }
612 pushp->sap_npush = npush;
613
614 /*
615 * We have everything we want from the line.
616 * Now make sure there is no extra garbage on the line.
617 */
618 while (isspace(*cp))
619 cp++;
620 if (*cp) {
621 (void) fprintf(stderr,
622 gettext("%s: ERROR: File %s: too many modules, line %d "
623 "ignored\n"), Cmdp, namep, lineno);
624 return (1);
625 }
626 return (0);
627 }
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