summaryrefslogtreecommitdiff
path: root/lib/libalpm/add.c
blob: ecdccff04baa6426d16234976ef6e1f23b1d0e95 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
/*
 *  add.c
 *
 *  Copyright (c) 2006-2012 Pacman Development Team <pacman-dev@archlinux.org>
 *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <limits.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdint.h> /* int64_t */

/* libarchive */
#include <archive.h>
#include <archive_entry.h>

/* libalpm */
#include "add.h"
#include "alpm.h"
#include "alpm_list.h"
#include "handle.h"
#include "trans.h"
#include "util.h"
#include "log.h"
#include "backup.h"
#include "package.h"
#include "db.h"
#include "remove.h"
#include "handle.h"

/** Add a package to the transaction. */
int SYMEXPORT alpm_add_pkg(alpm_handle_t *handle, alpm_pkg_t *pkg)
{
	const char *pkgname, *pkgver;
	alpm_trans_t *trans;
	alpm_pkg_t *local;

	/* Sanity checks */
	CHECK_HANDLE(handle, return -1);
	ASSERT(pkg != NULL, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
	ASSERT(handle == pkg->handle, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
	trans = handle->trans;
	ASSERT(trans != NULL, RET_ERR(handle, ALPM_ERR_TRANS_NULL, -1));
	ASSERT(trans->state == STATE_INITIALIZED,
			RET_ERR(handle, ALPM_ERR_TRANS_NOT_INITIALIZED, -1));

	pkgname = pkg->name;
	pkgver = pkg->version;

	_alpm_log(handle, ALPM_LOG_DEBUG, "adding package '%s'\n", pkgname);

	if(alpm_pkg_find(trans->add, pkgname)) {
		RET_ERR(handle, ALPM_ERR_TRANS_DUP_TARGET, -1);
	}

	local = _alpm_db_get_pkgfromcache(handle->db_local, pkgname);
	if(local) {
		const char *localpkgname = local->name;
		const char *localpkgver = local->version;
		int cmp = _alpm_pkg_compare_versions(pkg, local);

		if(cmp == 0) {
			if(trans->flags & ALPM_TRANS_FLAG_NEEDED) {
				/* with the NEEDED flag, packages up to date are not reinstalled */
				_alpm_log(handle, ALPM_LOG_WARNING, _("%s-%s is up to date -- skipping\n"),
						localpkgname, localpkgver);
				return 0;
			} else if(!(trans->flags & ALPM_TRANS_FLAG_DOWNLOADONLY)) {
				_alpm_log(handle, ALPM_LOG_WARNING, _("%s-%s is up to date -- reinstalling\n"),
						localpkgname, localpkgver);
			}
		} else if(cmp < 0) {
			/* local version is newer */
			_alpm_log(handle, ALPM_LOG_WARNING, _("downgrading package %s (%s => %s)\n"),
					localpkgname, localpkgver, pkgver);
		}
	}

	/* add the package to the transaction */
	pkg->reason = ALPM_PKG_REASON_EXPLICIT;
	_alpm_log(handle, ALPM_LOG_DEBUG, "adding package %s-%s to the transaction add list\n",
						pkgname, pkgver);
	trans->add = alpm_list_add(trans->add, pkg);

	return 0;
}

static int perform_extraction(alpm_handle_t *handle, struct archive *archive,
		struct archive_entry *entry, const char *filename, const char *origname)
{
	int ret;
	const int archive_flags = ARCHIVE_EXTRACT_OWNER |
	                          ARCHIVE_EXTRACT_PERM |
	                          ARCHIVE_EXTRACT_TIME;

	archive_entry_set_pathname(entry, filename);

	ret = archive_read_extract(archive, entry, archive_flags);
	if(ret == ARCHIVE_WARN && archive_errno(archive) != ENOSPC) {
		/* operation succeeded but a "non-critical" error was encountered */
		_alpm_log(handle, ALPM_LOG_WARNING, _("warning given when extracting %s (%s)\n"),
				origname, archive_error_string(archive));
	} else if(ret != ARCHIVE_OK) {
		_alpm_log(handle, ALPM_LOG_ERROR, _("could not extract %s (%s)\n"),
				origname, archive_error_string(archive));
		alpm_logaction(handle, "error: could not extract %s (%s)\n",
				origname, archive_error_string(archive));
		return 1;
	}
	return 0;
}

static int try_rename(alpm_handle_t *handle, const char *src, const char *dest)
{
	if(rename(src, dest)) {
		_alpm_log(handle, ALPM_LOG_ERROR, _("could not rename %s to %s (%s)\n"),
				src, dest, strerror(errno));
		alpm_logaction(handle, "error: could not rename %s to %s (%s)\n",
				src, dest, strerror(errno));
		return 1;
	}
	return 0;
}

static int extract_single_file(alpm_handle_t *handle, struct archive *archive,
		struct archive_entry *entry, alpm_pkg_t *newpkg, alpm_pkg_t *oldpkg)
{
	const char *entryname;
	mode_t entrymode;
	char filename[PATH_MAX]; /* the actual file we're extracting */
	int needbackup = 0, notouch = 0;
	const char *hash_orig = NULL;
	char *entryname_orig = NULL;
	int errors = 0;

	entryname = archive_entry_pathname(entry);
	entrymode = archive_entry_mode(entry);

	if(strcmp(entryname, ".INSTALL") == 0) {
		/* the install script goes inside the db */
		snprintf(filename, PATH_MAX, "%s%s-%s/install",
				_alpm_db_path(handle->db_local), newpkg->name, newpkg->version);
		archive_entry_set_perm(entry, 0644);
	} else if(strcmp(entryname, ".CHANGELOG") == 0) {
		/* the changelog goes inside the db */
		snprintf(filename, PATH_MAX, "%s%s-%s/changelog",
				_alpm_db_path(handle->db_local), newpkg->name, newpkg->version);
		archive_entry_set_perm(entry, 0644);
	} else if(*entryname == '.') {
		/* for now, ignore all files starting with '.' that haven't
		 * already been handled (for future possibilities) */
		_alpm_log(handle, ALPM_LOG_DEBUG, "skipping extraction of '%s'\n", entryname);
		archive_read_data_skip(archive);
		return 0;
	} else {
		/* build the new entryname relative to handle->root */
		snprintf(filename, PATH_MAX, "%s%s", handle->root, entryname);
	}

	/* if a file is in NoExtract then we never extract it */
	if(alpm_list_find(handle->noextract, entryname, _alpm_fnmatch)) {
		_alpm_log(handle, ALPM_LOG_DEBUG, "%s is in NoExtract, skipping extraction\n",
				entryname);
		alpm_logaction(handle, "note: %s is in NoExtract, skipping extraction\n",
				entryname);
		archive_read_data_skip(archive);
		return 0;
	}

	/* Check for file existence. This is one of the more crucial parts
	 * to get 'right'. Here are the possibilities, with the filesystem
	 * on the left and the package on the top:
	 * (F=file, N=node, S=symlink, D=dir)
	 *               |  F/N  |  S  |  D
	 *  non-existent |   1   |  2  |  3
	 *  F/N          |   4   |  5  |  6
	 *  S            |   7   |  8  |  9
	 *  D            |   10  |  11 |  12
	 *
	 *  1,2,3- extract, no magic necessary. lstat (_alpm_lstat) will fail here.
	 *  4,5,6,7,8- conflict checks should have caught this. either overwrite
	 *      or backup the file.
	 *  9- follow the symlink, hopefully it is a directory, check it.
	 *  10- file replacing directory- don't allow it.
	 *  11- don't extract symlink- a dir exists here. we don't want links to
	 *      links, etc.
	 *  12- skip extraction, dir already exists.
	 */

	/* do both a lstat and a stat, so we can see what symlinks point to */
	struct stat lsbuf, sbuf;
	if(_alpm_lstat(filename, &lsbuf) != 0 || stat(filename, &sbuf) != 0) {
		/* cases 1,2,3: couldn't stat an existing file, skip all backup checks */
	} else {
		if(S_ISDIR(lsbuf.st_mode)) {
			if(S_ISDIR(entrymode)) {
				/* case 12: existing dir, ignore it */
				if(lsbuf.st_mode != entrymode) {
					/* if filesystem perms are different than pkg perms, warn user */
					mode_t mask = 07777;
					_alpm_log(handle, ALPM_LOG_WARNING, _("directory permissions differ on %s\n"
								"filesystem: %o  package: %o\n"), entryname, lsbuf.st_mode & mask,
							entrymode & mask);
					alpm_logaction(handle, "warning: directory permissions differ on %s\n"
							"filesystem: %o  package: %o\n", entryname, lsbuf.st_mode & mask,
							entrymode & mask);
				}
				_alpm_log(handle, ALPM_LOG_DEBUG, "extract: skipping dir extraction of %s\n",
						entryname);
				archive_read_data_skip(archive);
				return 0;
			} else {
				/* case 10/11: trying to overwrite dir with file/symlink, don't allow it */
				_alpm_log(handle, ALPM_LOG_ERROR, _("extract: not overwriting dir with file %s\n"),
						entryname);
				archive_read_data_skip(archive);
				return 1;
			}
		} else if(S_ISLNK(lsbuf.st_mode) && S_ISDIR(entrymode)) {
			/* case 9: existing symlink, dir in package */
			if(S_ISDIR(sbuf.st_mode)) {
				/* the symlink on FS is to a directory, so we'll use it */
				_alpm_log(handle, ALPM_LOG_DEBUG, "extract: skipping symlink overwrite of %s\n",
						entryname);
				archive_read_data_skip(archive);
				return 0;
			} else {
				/* this is BAD. symlink was not to a directory */
				_alpm_log(handle, ALPM_LOG_ERROR, _("extract: symlink %s does not point to dir\n"),
						entryname);
				archive_read_data_skip(archive);
				return 1;
			}
		} else if(S_ISREG(lsbuf.st_mode) && S_ISDIR(entrymode)) {
			/* case 6: trying to overwrite file with dir */
			_alpm_log(handle, ALPM_LOG_DEBUG, "extract: overwriting file with dir %s\n",
					entryname);
		} else if(S_ISREG(entrymode)) {
			/* case 4,7: */
			/* if file is in NoUpgrade, don't touch it */
			if(alpm_list_find(handle->noupgrade, entryname, _alpm_fnmatch)) {
				notouch = 1;
			} else {
				alpm_backup_t *backup;
				/* go to the backup array and see if our conflict is there */
				/* check newpkg first, so that adding backup files is retroactive */
				backup = _alpm_needbackup(entryname, newpkg);
				if(backup) {
					/* if we force hash_orig to be non-NULL retroactive backup works */
					hash_orig = "";
					needbackup = 1;
				}

				/* check oldpkg for a backup entry, store the hash if available */
				if(oldpkg) {
					backup = _alpm_needbackup(entryname, oldpkg);
					if(backup) {
						hash_orig = backup->hash;
						needbackup = 1;
					}
				}
			}
		}
		/* else if(S_ISLNK(entrymode)) */
		/* case 5,8: don't need to do anything special */
	}

	/* we need access to the original entryname later after calls to
	 * archive_entry_set_pathname(), so we need to dupe it and free() later */
	STRDUP(entryname_orig, entryname, RET_ERR(handle, ALPM_ERR_MEMORY, -1));

	if(needbackup) {
		char *checkfile;
		char *hash_local = NULL, *hash_pkg = NULL;
		size_t len;

		len = strlen(filename) + 10;
		MALLOC(checkfile, len,
				errors++; handle->pm_errno = ALPM_ERR_MEMORY; goto needbackup_cleanup);
		snprintf(checkfile, len, "%s.paccheck", filename);

		if(perform_extraction(handle, archive, entry, checkfile, entryname_orig)) {
			errors++;
			goto needbackup_cleanup;
		}

		hash_local = alpm_compute_md5sum(filename);
		hash_pkg = alpm_compute_md5sum(checkfile);

		/* update the md5 hash in newpkg's backup (it will be the new orginal) */
		alpm_list_t *i;
		for(i = alpm_pkg_get_backup(newpkg); i; i = i->next) {
			alpm_backup_t *backup = i->data;
			char *newhash;
			if(!backup->name || strcmp(backup->name, entryname_orig) != 0) {
				continue;
			}
			STRDUP(newhash, hash_pkg, RET_ERR(handle, ALPM_ERR_MEMORY, -1));
			FREE(backup->hash);
			backup->hash = newhash;
		}

		_alpm_log(handle, ALPM_LOG_DEBUG, "checking hashes for %s\n", entryname_orig);
		_alpm_log(handle, ALPM_LOG_DEBUG, "current:  %s\n", hash_local);
		_alpm_log(handle, ALPM_LOG_DEBUG, "new:      %s\n", hash_pkg);
		_alpm_log(handle, ALPM_LOG_DEBUG, "original: %s\n", hash_orig);

		if(!oldpkg) {
			if(hash_local && hash_pkg && strcmp(hash_local, hash_pkg) != 0) {
				/* looks like we have a local file that has a different hash as the
				 * file in the package, move it to a .pacorig */
				char *newpath;
				size_t newlen = strlen(filename) + 9;
				MALLOC(newpath, newlen,
						errors++; handle->pm_errno = ALPM_ERR_MEMORY; goto needbackup_cleanup);
				snprintf(newpath, newlen, "%s.pacorig", filename);

				/* move the existing file to the "pacorig" */
				if(try_rename(handle, filename, newpath)) {
						errors++;
					errors++;
				} else {
					/* rename the file we extracted to the real name */
					if(try_rename(handle, checkfile, filename)) {
						errors++;
					} else {
						_alpm_log(handle, ALPM_LOG_WARNING, _("%s saved as %s\n"), filename, newpath);
						alpm_logaction(handle, "warning: %s saved as %s\n", filename, newpath);
					}
				}
				free(newpath);
			} else {
				/* local file is identical to pkg one, so just remove pkg one */
				unlink(checkfile);
			}
		} else if(hash_orig) {
			/* the fun part */

			if(hash_local && strcmp(hash_orig, hash_local) == 0) {
				/* installed file has NOT been changed by user */
				if(hash_pkg && strcmp(hash_orig, hash_pkg) != 0) {
					_alpm_log(handle, ALPM_LOG_DEBUG, "action: installing new file: %s\n",
							entryname_orig);

					if(try_rename(handle, checkfile, filename)) {
						errors++;
					}
				} else {
					/* no sense in installing the same file twice, install
					 * ONLY if the original and package hashes differ */
					_alpm_log(handle, ALPM_LOG_DEBUG, "action: leaving existing file in place\n");
					unlink(checkfile);
				}
			} else if(hash_pkg && strcmp(hash_orig, hash_pkg) == 0) {
				/* originally installed file and new file are the same - this
				 * implies the case above failed - i.e. the file was changed by a
				 * user */
				_alpm_log(handle, ALPM_LOG_DEBUG, "action: leaving existing file in place\n");
				unlink(checkfile);
			} else if(hash_local && hash_pkg && strcmp(hash_local, hash_pkg) == 0) {
				/* this would be magical.  The above two cases failed, but the
				 * user changes just so happened to make the new file exactly the
				 * same as the one in the package... skip it */
				_alpm_log(handle, ALPM_LOG_DEBUG, "action: leaving existing file in place\n");
				unlink(checkfile);
			} else {
				char *newpath;
				size_t newlen = strlen(filename) + 8;
				_alpm_log(handle, ALPM_LOG_DEBUG, "action: keeping current file and installing"
						" new one with .pacnew ending\n");
				MALLOC(newpath, newlen,
						errors++; handle->pm_errno = ALPM_ERR_MEMORY; goto needbackup_cleanup);
				snprintf(newpath, newlen, "%s.pacnew", filename);
				if(try_rename(handle, checkfile, newpath)) {
					errors++;
				} else {
					_alpm_log(handle, ALPM_LOG_WARNING, _("%s installed as %s\n"),
							filename, newpath);
					alpm_logaction(handle, "warning: %s installed as %s\n",
							filename, newpath);
				}
				free(newpath);
			}
		}

needbackup_cleanup:
		free(checkfile);
		free(hash_local);
		free(hash_pkg);
	} else {
		/* we didn't need a backup */
		if(notouch) {
			/* change the path to a .pacnew extension */
			_alpm_log(handle, ALPM_LOG_DEBUG, "%s is in NoUpgrade -- skipping\n", filename);
			_alpm_log(handle, ALPM_LOG_WARNING, _("extracting %s as %s.pacnew\n"), filename, filename);
			alpm_logaction(handle, "warning: extracting %s as %s.pacnew\n", filename, filename);
			strncat(filename, ".pacnew", PATH_MAX - strlen(filename));
		} else {
			_alpm_log(handle, ALPM_LOG_DEBUG, "extracting %s\n", filename);
		}

		if(handle->trans->flags & ALPM_TRANS_FLAG_FORCE) {
			/* if FORCE was used, unlink() each file (whether it's there
			 * or not) before extracting. This prevents the old "Text file busy"
			 * error that crops up if forcing a glibc or pacman upgrade. */
			unlink(filename);
		}

		if(perform_extraction(handle, archive, entry, filename, entryname_orig)) {
			/* error */
			free(entryname_orig);
			errors++;
			return errors;
		}

		/* calculate an hash if this is in newpkg's backup */
		alpm_list_t *i;
		for(i = alpm_pkg_get_backup(newpkg); i; i = i->next) {
			alpm_backup_t *backup = i->data;
			char *newhash;
			if(!backup->name || strcmp(backup->name, entryname_orig) != 0) {
				continue;
			}
			_alpm_log(handle, ALPM_LOG_DEBUG, "appending backup entry for %s\n", entryname_orig);
			newhash = alpm_compute_md5sum(filename);
			FREE(backup->hash);
			backup->hash = newhash;
		}
	}
	free(entryname_orig);
	return errors;
}

static int commit_single_pkg(alpm_handle_t *handle, alpm_pkg_t *newpkg,
		size_t pkg_current, size_t pkg_count)
{
	int i, ret = 0, errors = 0;
	int is_upgrade;
	alpm_pkg_t *oldpkg = NULL;
	alpm_db_t *db = handle->db_local;
	alpm_trans_t *trans = handle->trans;
	const char *pkgfile;

	ASSERT(trans != NULL, return -1);

	/* see if this is an upgrade. if so, remove the old package first */
	alpm_pkg_t *local = _alpm_db_get_pkgfromcache(db, newpkg->name);
	if(local) {
		is_upgrade = 1;

		/* we'll need to save some record for backup checks later */
		if(_alpm_pkg_dup(local, &oldpkg) == -1) {
			ret = -1;
			goto cleanup;
		}

		/* copy over the install reason */
		newpkg->reason = alpm_pkg_get_reason(local);

		EVENT(handle, ALPM_EVENT_UPGRADE_START, newpkg, local);
	} else {
		is_upgrade = 0;
		EVENT(handle, ALPM_EVENT_ADD_START, newpkg, NULL);
	}

	pkgfile = newpkg->origin_data.file;

	_alpm_log(handle, ALPM_LOG_DEBUG, "%s package %s-%s\n",
			is_upgrade ? "upgrading" : "adding", newpkg->name, newpkg->version);
		/* pre_install/pre_upgrade scriptlet */
	if(alpm_pkg_has_scriptlet(newpkg) &&
			!(trans->flags & ALPM_TRANS_FLAG_NOSCRIPTLET)) {
		const char *scriptlet_name = is_upgrade ? "pre_upgrade" : "pre_install";

		_alpm_runscriptlet(handle, pkgfile, scriptlet_name,
				newpkg->version, oldpkg ? oldpkg->version : NULL, 1);
	}

	/* we override any pre-set reason if we have alldeps or allexplicit set */
	if(trans->flags & ALPM_TRANS_FLAG_ALLDEPS) {
		newpkg->reason = ALPM_PKG_REASON_DEPEND;
	} else if(trans->flags & ALPM_TRANS_FLAG_ALLEXPLICIT) {
		newpkg->reason = ALPM_PKG_REASON_EXPLICIT;
	}

	if(oldpkg) {
		/* set up fake remove transaction */
		if(_alpm_remove_single_package(handle, oldpkg, newpkg, 0, 0) == -1) {
			handle->pm_errno = ALPM_ERR_TRANS_ABORT;
			ret = -1;
			goto cleanup;
		}
	}

	/* prepare directory for database entries so permission are correct after
	   changelog/install script installation (FS#12263) */
	if(_alpm_local_db_prepare(db, newpkg)) {
		alpm_logaction(handle, "error: could not create database entry %s-%s\n",
				newpkg->name, newpkg->version);
		handle->pm_errno = ALPM_ERR_DB_WRITE;
		ret = -1;
		goto cleanup;
	}

	if(!(trans->flags & ALPM_TRANS_FLAG_DBONLY)) {
		struct archive *archive;
		struct archive_entry *entry;
		struct stat buf;
		int fd, cwdfd;

		_alpm_log(handle, ALPM_LOG_DEBUG, "extracting files\n");

		fd = _alpm_open_archive(db->handle, pkgfile, &buf,
				&archive, ALPM_ERR_PKG_OPEN);
		if(fd < 0) {
			ret = -1;
			goto cleanup;
		}

		/* save the cwd so we can restore it later */
		OPEN(cwdfd, ".", O_RDONLY);
		if(cwdfd < 0) {
			_alpm_log(handle, ALPM_LOG_ERROR, _("could not get current working directory\n"));
		}

		/* libarchive requires this for extracting hard links */
		if(chdir(handle->root) != 0) {
			_alpm_log(handle, ALPM_LOG_ERROR, _("could not change directory to %s (%s)\n"),
					handle->root, strerror(errno));
			archive_read_finish(archive);
			CLOSE(fd);
			ret = -1;
			goto cleanup;
		}

		/* call PROGRESS once with 0 percent, as we sort-of skip that here */
		if(is_upgrade) {
			PROGRESS(handle, ALPM_PROGRESS_UPGRADE_START,
					newpkg->name, 0, pkg_count, pkg_current);
		} else {
			PROGRESS(handle, ALPM_PROGRESS_ADD_START,
					newpkg->name, 0, pkg_count, pkg_current);
		}

		for(i = 0; archive_read_next_header(archive, &entry) == ARCHIVE_OK; i++) {
			int percent;

			if(newpkg->size != 0) {
				/* Using compressed size for calculations here, as newpkg->isize is not
				 * exact when it comes to comparing to the ACTUAL uncompressed size
				 * (missing metadata sizes) */
				int64_t pos = archive_position_compressed(archive);
				percent = (pos * 100) / newpkg->size;
				if(percent >= 100) {
					percent = 100;
				}
			} else {
				percent = 0;
			}

			if(is_upgrade) {
				PROGRESS(handle, ALPM_PROGRESS_UPGRADE_START,
						newpkg->name, percent, pkg_count, pkg_current);
			} else {
				PROGRESS(handle, ALPM_PROGRESS_ADD_START,
						newpkg->name, percent, pkg_count, pkg_current);
			}

			/* extract the next file from the archive */
			errors += extract_single_file(handle, archive, entry, newpkg, oldpkg);
		}
		archive_read_finish(archive);
		CLOSE(fd);

		/* restore the old cwd if we have it */
		if(cwdfd >= 0) {
			if(fchdir(cwdfd) != 0) {
				_alpm_log(handle, ALPM_LOG_ERROR,
						_("could not restore working directory (%s)\n"), strerror(errno));
			}
			CLOSE(cwdfd);
		}

		if(errors) {
			ret = -1;
			if(is_upgrade) {
				_alpm_log(handle, ALPM_LOG_ERROR, _("problem occurred while upgrading %s\n"),
						newpkg->name);
				alpm_logaction(handle, "error: problem occurred while upgrading %s\n",
						newpkg->name);
			} else {
				_alpm_log(handle, ALPM_LOG_ERROR, _("problem occurred while installing %s\n"),
						newpkg->name);
				alpm_logaction(handle, "error: problem occurred while installing %s\n",
						newpkg->name);
			}
		}
	}

	/* make an install date (in UTC) */
	newpkg->installdate = time(NULL);

	_alpm_log(handle, ALPM_LOG_DEBUG, "updating database\n");
	_alpm_log(handle, ALPM_LOG_DEBUG, "adding database entry '%s'\n", newpkg->name);

	if(_alpm_local_db_write(db, newpkg, INFRQ_ALL)) {
		_alpm_log(handle, ALPM_LOG_ERROR, _("could not update database entry %s-%s\n"),
				newpkg->name, newpkg->version);
		alpm_logaction(handle, "error: could not update database entry %s-%s\n",
				newpkg->name, newpkg->version);
		handle->pm_errno = ALPM_ERR_DB_WRITE;
		ret = -1;
		goto cleanup;
	}

	if(_alpm_db_add_pkgincache(db, newpkg) == -1) {
		_alpm_log(handle, ALPM_LOG_ERROR, _("could not add entry '%s' in cache\n"),
				newpkg->name);
	}

	if(is_upgrade) {
		PROGRESS(handle, ALPM_PROGRESS_UPGRADE_START,
				newpkg->name, 100, pkg_count, pkg_current);
	} else {
		PROGRESS(handle, ALPM_PROGRESS_ADD_START,
				newpkg->name, 100, pkg_count, pkg_current);
	}

	/* run the post-install script if it exists  */
	if(alpm_pkg_has_scriptlet(newpkg)
			&& !(trans->flags & ALPM_TRANS_FLAG_NOSCRIPTLET)) {
		char *scriptlet = _alpm_local_db_pkgpath(db, newpkg, "install");
		const char *scriptlet_name = is_upgrade ? "post_upgrade" : "post_install";

		_alpm_runscriptlet(handle, scriptlet, scriptlet_name,
				newpkg->version, oldpkg ? oldpkg->version : NULL, 0);
		free(scriptlet);
	}

	if(is_upgrade) {
		EVENT(handle, ALPM_EVENT_UPGRADE_DONE, newpkg, oldpkg);
	} else {
		EVENT(handle, ALPM_EVENT_ADD_DONE, newpkg, oldpkg);
	}

cleanup:
	_alpm_pkg_free(oldpkg);
	return ret;
}

int _alpm_upgrade_packages(alpm_handle_t *handle)
{
	size_t pkg_count, pkg_current;
	int skip_ldconfig = 0, ret = 0;
	alpm_list_t *targ;
	alpm_trans_t *trans = handle->trans;

	if(trans->add == NULL) {
		return 0;
	}

	pkg_count = alpm_list_count(trans->add);
	pkg_current = 1;

	/* loop through our package list adding/upgrading one at a time */
	for(targ = trans->add; targ; targ = targ->next) {
		alpm_pkg_t *newpkg = targ->data;

		if(handle->trans->state == STATE_INTERRUPTED) {
			return ret;
		}

		if(commit_single_pkg(handle, newpkg, pkg_current, pkg_count)) {
			/* something screwed up on the commit, abort the trans */
			trans->state = STATE_INTERRUPTED;
			handle->pm_errno = ALPM_ERR_TRANS_ABORT;
			/* running ldconfig at this point could possibly screw system */
			skip_ldconfig = 1;
			ret = -1;
		}

		pkg_current++;
	}

	if(!skip_ldconfig) {
		/* run ldconfig if it exists */
		_alpm_ldconfig(handle);
	}

	return ret;
}

/* vim: set ts=2 sw=2 noet: */