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 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27
28 #include <stdio.h>
29 #include <limits.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 #include <errno.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <pkgstrct.h>
36 #include <locale.h>
37 #include <libintl.h>
38 #include <pkglib.h>
39 #include <install.h>
40 #include <libinst.h>
41
42 #define WRN_NOPKGOBJ "WARNING: no package objects found"
43
44 #define ERR_MEMORY "memory allocation failure"
45 #define ERR_DUPPATH "duplicate pathname <%s>"
46
47 /* libpkg/gpkgmap */
48 extern int getmapmode(void);
49
50 #define EPTMALLOC 512
51
52 static struct cfextra **extlist;
53
54 int eptnum;
55 static int array_preloaded = 0;
56 static int errflg;
57 static int nparts;
58 static int xspace = -1;
59
60 void pkgobjinit(void);
61 static int pkgobjassign(struct cfent *ept, char **server_local,
62 char **client_local, char **server_path,
63 char **client_path, char **map_path, int mapflag,
64 int nc);
65
66 static int ckdup(struct cfent *ept1, struct cfent *ept2);
67 static int sortentry(int index);
68 static int dup_merg(struct cfextra *ext1, struct cfextra *ext2);
69
70 void
pkgobjinit(void)71 pkgobjinit(void)
72 {
73 if (array_preloaded) /* Already done. */
74 return;
75
76 errflg = nparts = eptnum = 0;
77
78 if (xspace != -1) {
79 ar_free(xspace);
80 xspace = -1;
81 }
82
83 /*
84 * initialize dynamic memory used to store
85 * path information which is read in
86 */
87 (void) pathdup((char *)0);
88 }
89
90 /*
91 * This function assigns appropriate values based upon the pkgmap entry
92 * in the cfent structure.
93 */
94 static int
pkgobjassign(struct cfent * ept,char ** server_local,char ** client_local,char ** server_path,char ** client_path,char ** map_path,int mapflag,int nc)95 pkgobjassign(struct cfent *ept, char **server_local, char **client_local,
96 char **server_path, char **client_path, char **map_path, int mapflag,
97 int nc)
98 {
99 int path_duped = 0;
100 int local_duped = 0;
101 char source[PATH_MAX+1];
102
103 if (nc >= 0 && ept->ftype != 'i')
104 if ((ept->pkg_class_idx = cl_idx(ept->pkg_class)) == -1)
105 return (1);
106
107 if (ept->volno > nparts)
108 nparts++;
109
110 /*
111 * Generate local (delivered source) paths for files
112 * which need them so that the install routine will know
113 * where to get the file from the package. Note that we
114 * do not resolve path environment variables here since
115 * they won't be resolved in the reloc directory.
116 */
117 if ((mapflag > 1) && strchr("fve", ept->ftype)) {
118 if (ept->ainfo.local == NULL) {
119 source[0] = '~';
120 (void) strlcpy(&source[1], ept->path,
121 sizeof (source)-1);
122 ept->ainfo.local = pathdup(source);
123 *server_local = ept->ainfo.local;
124 *client_local = ept->ainfo.local;
125
126 local_duped = 1;
127 }
128 }
129
130 /*
131 * Evaluate the destination path based upon available
132 * environment, then produce a client-relative and
133 * server-relative canonized path.
134 */
135 if (mapflag && (ept->ftype != 'i')) {
136 mappath(getmapmode(), ept->path); /* evaluate variables */
137 canonize(ept->path); /* Fix path as necessary. */
138
139 (void) eval_path(server_path,
140 client_path,
141 map_path,
142 ept->path);
143 path_duped = 1; /* eval_path dup's it */
144 ept->path = *server_path; /* default */
145 }
146
147 /*
148 * Deal with source for hard and soft links.
149 */
150 if (strchr("sl", ept->ftype)) {
151 if (mapflag) {
152 mappath(getmapmode(), ept->ainfo.local);
153 if (!RELATIVE(ept->ainfo.local)) {
154 canonize(ept->ainfo.local);
155
156 /* check for hard link */
157 if (ept->ftype == 'l') {
158 (void) eval_path(
159 server_local,
160 client_local,
161 NULL,
162 ept->ainfo.local);
163 local_duped = 1;
164
165 /* Default to server. */
166 ept->ainfo.local = *server_local;
167 }
168 }
169 }
170 }
171
172 /*
173 * For the paths (both source and target) that were too mundane to
174 * have been copied into dup space yet, do that.
175 */
176 if (!path_duped) {
177 *server_path = pathdup(ept->path);
178 *client_path = *server_path;
179 ept->path = *server_path;
180
181 path_duped = 1;
182 }
183 if (ept->ainfo.local != NULL)
184 if (!local_duped) {
185 *server_local = pathdup(ept->ainfo.local);
186 ept->ainfo.local = *server_local;
187 *client_local = ept->ainfo.local;
188
189 local_duped = 1;
190 }
191
192 return (0);
193 }
194
195 /* This initializes the package object array. */
196 int
init_pkgobjspace(void)197 init_pkgobjspace(void)
198 {
199 if (array_preloaded) /* Already done. */
200 return (1);
201
202 if (xspace == -1) {
203 xspace = ar_create(EPTMALLOC, sizeof (struct cfextra),
204 "package object");
205 if (xspace == -1) {
206 progerr(gettext(ERR_MEMORY));
207 return (0);
208 }
209 }
210
211 return (1);
212 }
213
214 int
seed_pkgobjmap(struct cfextra * ext_entry,char * path,char * local)215 seed_pkgobjmap(struct cfextra *ext_entry, char *path, char *local)
216 {
217 struct cfextra *ext, **ext_ptr;
218
219 /* offsets for the various path images. */
220 int client_path_os;
221 int server_path_os;
222 int map_path_os;
223 int client_local_os;
224 int server_local_os;
225
226 ext_ptr = (struct cfextra **)ar_next_avail(xspace);
227
228 if (ext_ptr == NULL || *ext_ptr == NULL) {
229 progerr(gettext(ERR_MEMORY));
230 return (NULL);
231 }
232
233 ext = *ext_ptr;
234
235 (void) memcpy(ext, ext_entry, sizeof (struct cfextra));
236
237 /* Figure out all of the offsets. */
238 client_path_os = ((ptrdiff_t)ext->client_path -
239 (ptrdiff_t)ext->cf_ent.path);
240 server_path_os = ((ptrdiff_t)ext->server_path -
241 (ptrdiff_t)ext->cf_ent.path);
242 map_path_os = ((ptrdiff_t)ext->map_path -
243 (ptrdiff_t)ext->cf_ent.path);
244 client_local_os = ((ptrdiff_t)ext->client_local -
245 (ptrdiff_t)ext->cf_ent.ainfo.local);
246 server_local_os = ((ptrdiff_t)ext->server_local -
247 (ptrdiff_t)ext->cf_ent.ainfo.local);
248
249 /* Allocate and store the path name. */
250 ext->cf_ent.path = pathdup(path);
251
252 /* Assign the path substring pointers. */
253 ext->client_path = (ext->cf_ent.path + client_path_os);
254 ext->server_path = (ext->cf_ent.path + server_path_os);
255 ext->map_path = (ext->cf_ent.path + map_path_os);
256
257 /* If there's a local entry, allocate and store it as well. */
258 if (local) {
259 ext->cf_ent.ainfo.local = pathdup(local);
260
261 ext->client_local = (ext->cf_ent.ainfo.local + client_local_os);
262 ext->server_local = (ext->cf_ent.ainfo.local + server_local_os);
263 } else {
264 ext->cf_ent.ainfo.local = NULL;
265 ext->client_local = NULL;
266 ext->server_local = NULL;
267 }
268
269 eptnum++;
270 array_preloaded = 1;
271
272 return (0);
273 }
274
275 /*
276 * This function reads the pkgmap (or any file similarly formatted) and
277 * returns a pointer to a list of struct cfextra (each of which
278 * contains a struct cfent) representing the contents of that file.
279 */
280
281 /* ARGSUSED ir in pkgobjmap */
282 struct cfextra **
pkgobjmap(VFP_T * vfp,int mapflag,char * ir)283 pkgobjmap(VFP_T *vfp, int mapflag, char *ir)
284 {
285 struct cfextra *ext, **ext_ptr;
286 struct cfent *ept, map_entry;
287 int i;
288 int n;
289 int nc;
290
291 pkgobjinit();
292 if (!init_pkgobjspace())
293 quit(99);
294
295 nc = cl_getn();
296 for (;;) {
297 /* Clear the buffer. */
298 (void) memset(&map_entry, '\000', sizeof (struct cfent));
299
300 /*
301 * Fill in a cfent structure in a very preliminary fashion.
302 * ept->path and ept->ainfo.local point to static memory
303 * areas of size PATH_MAX. These are manipulated and
304 * then provided their own allocations later in this function.
305 */
306 n = gpkgmapvfp(&map_entry, vfp);
307
308 if (n == 0)
309 break; /* no more entries in pkgmap */
310 else if (n < 0) {
311 char *errstr = getErrstr();
312 progerr(gettext("bad entry read in pkgmap"));
313 logerr(gettext("pathname=%s"),
314 (map_entry.path && *map_entry.path) ?
315 map_entry.path : "Unknown");
316 logerr(gettext("problem=%s"),
317 (errstr && *errstr) ? errstr : "Unknown");
318 return (NULL);
319 }
320
321 /*
322 * A valid entry was found in the map, so allocate an
323 * official record.
324 */
325 ext_ptr = (struct cfextra **)ar_next_avail(xspace);
326 if (ext_ptr == NULL || *ext_ptr == NULL) {
327 progerr(gettext(ERR_MEMORY));
328 return (NULL);
329 }
330
331 ext = *ext_ptr;
332 ept = &(ext->cf_ent);
333
334 /* Transfer what we just read in. */
335 (void) memcpy(ept, &map_entry, sizeof (struct cfent));
336
337 /* And process it into the cfextra structure. */
338 if (pkgobjassign(ept,
339 &(ext->server_local),
340 &(ext->client_local),
341 &(ext->server_path),
342 &(ext->client_path),
343 &(ext->map_path),
344 mapflag, nc)) {
345 /* It didn't take. */
346 (void) ar_delete(xspace, eptnum);
347 continue;
348 }
349
350 eptnum++;
351 ext->fsys_value = BADFSYS; /* No file system data yet */
352 ext->fsys_base = BADFSYS;
353 }
354
355 if (eptnum == 0) {
356 logerr(gettext(WRN_NOPKGOBJ));
357 return (NULL);
358 }
359
360 /* setup a pointer array to point to malloc'd entries space */
361 extlist = (struct cfextra **)ar_get_head(xspace);
362 if (extlist == NULL) {
363 progerr(gettext(ERR_MEMORY));
364 return (NULL);
365 }
366
367 (void) sortentry(-1);
368 for (i = 0; i < eptnum; /* void */) {
369 if (!sortentry(i))
370 i++;
371 }
372
373 return (errflg ? NULL : extlist);
374 }
375
376 /*
377 * This function sorts the final list of cfextra entries. If index = -1, the
378 * function is initialized. index = 0 doesn't get us anywhere because this
379 * sorts against index-1. Positive natural index values are compared and
380 * sorted into the array appropriately. Yes, it does seem we should use a
381 * quicksort on the whole array or something. The apparent reason for taking
382 * this approach is that there are enough special considerations to be
383 * applied to each package object that inserting them one-by-one doesn't cost
384 * that much.
385 */
386 static int
sortentry(int index)387 sortentry(int index)
388 {
389 struct cfextra *ext;
390 struct cfent *ept, *ept_i;
391 static int last = 0;
392 int i, n, j;
393 int upper, lower;
394
395 if (index == 0)
396 return (0);
397 else if (index < 0) {
398 last = 0;
399 return (0);
400 }
401
402 /*
403 * Based on the index, this is the package object we're going to
404 * review. It may stay where it is or it may be repositioned in the
405 * array.
406 */
407 ext = extlist[index];
408 ept = &(ext->cf_ent);
409
410 /* quick comparison optimization for pre-sorted arrays */
411 if (strcmp(ept->path, extlist[index-1]->cf_ent.path) > 0) {
412 /* do nothing */
413 last = index-1;
414 return (0);
415 }
416
417 lower = 0; /* lower bound of the unsorted elements */
418 upper = index; /* upper bound */
419 i = last;
420 do {
421 /*
422 * NOTE: This does a binary sort on path. There are lots of
423 * other worthy items in the array, but path is the key into
424 * the package database.
425 */
426 ept_i = &(extlist[i]->cf_ent);
427
428 n = strcmp(ept->path, ept_i->path);
429 if (n == 0) {
430 if (!ckdup(ept, ept_i)) {
431 /*
432 * If the array was seeded then there are
433 * bound to be occasional duplicates.
434 * Otherwise, duplicates are definitely a
435 * sign of major damage.
436 */
437 if (array_preloaded) {
438 if (!dup_merg(ext, extlist[i])) {
439 progerr(gettext(ERR_DUPPATH),
440 ept->path);
441 errflg++;
442 }
443 } else {
444 progerr(gettext(ERR_DUPPATH),
445 ept->path);
446 errflg++;
447 }
448 }
449 /* remove the entry at index */
450 (void) ar_delete(xspace, index);
451
452 eptnum--;
453 return (1); /* Use this index again. */
454 } else if (n < 0) {
455 /*
456 * The path of interest is smaller than the path
457 * under test. Move down array using the method of
458 * division
459 */
460 upper = i;
461 i = lower + (upper-lower)/2;
462 } else {
463 /* Move up array */
464 lower = i+1;
465 i = upper - (upper-lower)/2 - 1;
466 }
467 } while (upper != lower);
468 last = i = upper;
469
470 /* expand to insert at i */
471 for (j = index; j > i; j--)
472 extlist[j] = extlist[j-1];
473
474 extlist[i] = ext;
475
476 return (0);
477 }
478
479 /* Return the number of blocks required by the package object provided. */
480 static fsblkcnt_t
nblks(short fsys_entry,struct cfextra * ext)481 nblks(short fsys_entry, struct cfextra *ext)
482 {
483 fsblkcnt_t blk;
484 ulong_t block_size;
485 ulong_t frag_size;
486
487 block_size = (ulong_t)get_blk_size_n(fsys_entry);
488 frag_size = (ulong_t)get_frag_size_n(fsys_entry);
489
490 if (strchr("dxs", ext->cf_ent.ftype))
491 blk =
492 nblk(block_size, block_size, frag_size);
493 else if (ext->cf_ent.cinfo.size != BADCONT)
494 blk = nblk(ext->cf_ent.cinfo.size, block_size,
495 frag_size);
496 else
497 blk = 0;
498
499 return (blk);
500 }
501
502 /* Remove ext1 from the filesystem size calculations and add ext2. */
503 static void
size_xchng(struct cfextra * ext1,struct cfextra * ext2)504 size_xchng(struct cfextra *ext1, struct cfextra *ext2)
505 {
506 fsblkcnt_t bused;
507 ulong_t block_size;
508 ulong_t frag_size;
509 fsblkcnt_t blks1, blks2;
510 short fsys_entry;
511
512 /*
513 * Since these are on the same filesystem, either one will yield the
514 * correct block and fragment size.
515 */
516 fsys_entry = ext1->fsys_base;
517 block_size = (ulong_t)get_blk_size_n(fsys_entry);
518 frag_size = (ulong_t)get_frag_size_n(fsys_entry);
519
520 blks1 = nblk(ext1->cf_ent.cinfo.size, block_size, frag_size);
521 blks2 = nblk(ext2->cf_ent.cinfo.size, block_size, frag_size);
522
523 if (blks1 != blks2) {
524 /* First, lose the old size, then add the new size. */
525 bused = get_blk_used_n(fsys_entry);
526 bused -= nblks(fsys_entry, ext1);
527 bused += nblks(fsys_entry, ext2);
528
529 set_blk_used_n(fsys_entry, bused);
530 }
531 }
532
533 /*
534 * This function merges duplicate non-directory entries resulting from a
535 * dryrun or other procedure which preloads the extlist. It uses an odd
536 * heuristic to determine which package object is newest: only package
537 * objects from the dryrun file will have pinfo pointers. Therefore, the
538 * object with a pinfo pointer is from the dryrun file and it will be
539 * overwritten by the object being installed by this package.
540 *
541 * Assumptions:
542 * 1. The newer object will be overwriting the older object.
543 * 2. The two objects are close enough to the same size that
544 * the sizing is still OK.
545 *
546 * The calling routine will overwrite ept1, so this must return ept2 with
547 * the correct data to keep. There being only one logical outcome of a
548 * failure, this returns 1 for OK and 0 for FAIL.
549 */
550 static int
dup_merg(struct cfextra * ext1,struct cfextra * ext2)551 dup_merg(struct cfextra *ext1, struct cfextra *ext2)
552 {
553 struct cfent *ept1, *ept2;
554
555 ept1 = &(ext1->cf_ent);
556 ept2 = &(ext2->cf_ent);
557
558 if (strchr("?dx", ept1->ftype))
559 return (0);
560
561 if (strchr("?dx", ept2->ftype))
562 return (0);
563
564 /* First, which is the eldest? */
565 if (ext2->mstat.preloaded) {
566 /*
567 * While ept2 has the correct pinfo list (it was preloaded into
568 * the array before the pkgmap was read), ept1 has everything
569 * else. Here we copy the guts of ept1 into ept2.
570 *
571 * Start by grabbing the pointers to the ext2 items that we
572 * need to either restore or free.
573 */
574 /* to free() */
575 char *path = ept2->path;
576 char *local = ept2->ainfo.local;
577
578 /* to preserve */
579 short npkgs = ept2->npkgs;
580 struct pinfo *pinfo = ept2->pinfo;
581
582 /* Copy everything from the new entry to the old */
583 (void) memcpy(ept2, ept1, sizeof (struct cfent));
584
585 /* Now restore the original stuff.. */
586 ept2->path = path;
587 ept2->ainfo.local = local;
588 ept2->npkgs = npkgs;
589 ept2->pinfo = pinfo;
590
591 size_xchng(ext2, ext1);
592 } else if (ext1->mstat.preloaded) {
593 /*
594 * ept2 is already the one we will keep. All we have to do is
595 * copy over the pinfo pointer.
596 */
597 ept2->pinfo = ept1->pinfo;
598 size_xchng(ext1, ext2);
599 } else
600 return (0);
601
602 return (1);
603 }
604
605 /*
606 * Check duplicate entries in the package object list. If it's a directory,
607 * this just merges them, if not, it returns a 0 to force further processing.
608 */
609 static int
ckdup(struct cfent * ept1,struct cfent * ept2)610 ckdup(struct cfent *ept1, struct cfent *ept2)
611 {
612 /* ept2 will be modified to contain "merged" entries */
613
614 if (!strchr("?dx", ept1->ftype))
615 return (0);
616
617 if (!strchr("?dx", ept2->ftype))
618 return (0);
619
620 if (ept2->ainfo.mode == BADMODE)
621 ept2->ainfo.mode = ept1->ainfo.mode;
622 if ((ept1->ainfo.mode != ept2->ainfo.mode) &&
623 (ept1->ainfo.mode != BADMODE))
624 return (0);
625
626 if (strcmp(ept2->ainfo.owner, "?") == 0)
627 (void) strlcpy(ept2->ainfo.owner, ept1->ainfo.owner,
628 sizeof (ept2->ainfo.owner));
629 if (strcmp(ept1->ainfo.owner, ept2->ainfo.owner) &&
630 strcmp(ept1->ainfo.owner, "?"))
631 return (0);
632
633 if (strcmp(ept2->ainfo.group, "?") == 0)
634 (void) strlcpy(ept2->ainfo.group, ept1->ainfo.group,
635 sizeof (ept2->ainfo.group));
636 if (strcmp(ept1->ainfo.group, ept2->ainfo.group) &&
637 strcmp(ept1->ainfo.group, "?"))
638 return (0);
639
640 if (ept1->pinfo) {
641 ept2->npkgs = ept1->npkgs;
642 ept2->pinfo = ept1->pinfo;
643 }
644
645 return (1);
646 }
647
648 /*
649 * Replace the old package database entry with the new one preserving the
650 * data which remains constant across the replacement.
651 * copied directly:
652 * ftype, pkg_class
653 *
654 * preserved from old:
655 * path, npkgs, pinfo
656 */
657 void
repl_cfent(struct cfent * new,struct cfent * old)658 repl_cfent(struct cfent *new, struct cfent *old)
659 {
660 char *path = old->path;
661 short npkgs = old->npkgs;
662 struct pinfo *pinfo = old->pinfo;
663
664 /* Copy everything from the new entry over */
665 (void) memcpy(old, new, sizeof (struct cfent));
666
667 if (strchr("sl", new->ftype) == NULL)
668 old->ainfo.local = NULL;
669
670 old->path = path;
671 old->npkgs = npkgs;
672 old->pinfo = pinfo;
673
674 old->volno = 0;
675 }
676
677 /*
678 * Copy critical portions of cf_ent (from the package database) and el_ent
679 * (constructed from the pkgmap) into a merged cfent structure, tp. Then copy
680 * that to the el_ent structure. The approach we take here is to copy over
681 * everything from the package database entry, condition the paths based upon
682 * the currently installed path and then insert the following entries from
683 * the new structure :
684 * cfent.volno
685 * pkg_class
686 * pkg_class_idx
687 *
688 * The pinfo list is then copied from the cfent list. While
689 * fsys_value is also copied over, it hasn't been set yet. This function
690 * copies over whatever the default value is from the new structure.
691 *
692 * The copied entry is returned in the el_ent argument and the function
693 * value is 1 on success, 0 on failure. There is no recovery plan for
694 * failure.
695 */
696 int
cp_cfent(struct cfent * cf_ent,struct cfextra * el_ent)697 cp_cfent(struct cfent *cf_ent, struct cfextra *el_ent)
698 {
699 struct cfextra *tp;
700
701 /* Allocate space for cfent copy */
702 if ((tp = (struct cfextra *)calloc(1,
703 sizeof (struct cfextra))) == NULL) {
704 progerr(gettext("cp_cfent: memory allocation error"));
705 return (0);
706 }
707
708 /* Copy everything from the package database over */
709 (void) memcpy(&(tp->cf_ent), cf_ent, sizeof (struct cfent));
710
711 /* Now overlay new items from the pkgmap */
712 tp->fsys_value = el_ent->fsys_value;
713 tp->cf_ent.volno = el_ent->cf_ent.volno;
714 (void) strlcpy(tp->cf_ent.pkg_class, el_ent->cf_ent.pkg_class,
715 sizeof (tp->cf_ent.pkg_class));
716 tp->cf_ent.pkg_class_idx = el_ent->cf_ent.pkg_class_idx;
717 tp->cf_ent.pinfo = cf_ent->pinfo;
718
719 /*
720 * The paths are identical, so we get them from the new entry. These
721 * are pointing to a malloc'd section of memory containing a string
722 * that we aren't moving in this operation, so everybody points to
723 * the same thing during these transfers.
724 */
725 tp->cf_ent.path = el_ent->client_path;
726 tp->server_path = el_ent->server_path;
727 tp->client_path = el_ent->client_path;
728 tp->map_path = el_ent->map_path;
729
730 /*
731 * Since instvol() expects to work with the *original* mstat data,
732 * mstat is just copied here. NOTE: mstat looks like a structure, but
733 * it's really a short bit array.
734 */
735 tp->mstat = el_ent->mstat;
736
737 /* Copy everything from the temporary structure to the new entry */
738 (void) memcpy(el_ent, tp, sizeof (struct cfextra));
739 free(tp);
740
741 return (1);
742 }
743