Bug Summary

File:tog/../lib/fileindex.c
Warning:line 1181, column 1
Dereference of null pointer

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd6.9 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name fileindex.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/local/lib/clang/11.1.0 -I /home/ben/Projects/got/tog/../include -I /home/ben/Projects/got/tog/../lib -D GOT_LIBEXECDIR=/home/ben/bin -D GOT_VERSION=0.53-current -internal-isystem /usr/local/lib/clang/11.1.0/include -internal-externc-isystem /usr/include -O0 -fdebug-compilation-dir /home/ben/Projects/got/tog/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/got/scan/2021-05-28-230913-68537-1 -x c /home/ben/Projects/got/tog/../lib/fileindex.c
1/*
2 * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <sys/queue.h>
18#include <sys/tree.h>
19#include <sys/stat.h>
20
21#include <errno(*__errno()).h>
22#include <dirent.h>
23#include <fcntl.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <sha1.h>
28#include <endian.h>
29#include <limits.h>
30#include <unistd.h>
31#include <uuid.h>
32
33#include "got_error.h"
34#include "got_object.h"
35#include "got_path.h"
36
37#include "got_lib_fileindex.h"
38#include "got_lib_worktree.h"
39
40/* got_fileindex_entry flags */
41#define GOT_FILEIDX_F_PATH_LEN0x00000fff 0x00000fff
42#define GOT_FILEIDX_F_STAGE0x0000f000 0x0000f000
43#define GOT_FILEIDX_F_STAGE_SHIFT12 12
44#define GOT_FILEIDX_F_NOT_FLUSHED0x00010000 0x00010000
45#define GOT_FILEIDX_F_NO_BLOB0x00020000 0x00020000
46#define GOT_FILEIDX_F_NO_COMMIT0x00040000 0x00040000
47#define GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000 0x00080000
48#define GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000 0x00100000
49
50struct got_fileindex {
51 struct got_fileindex_tree entries;
52 int nentries; /* Does not include entries marked for removal. */
53#define GOT_FILEIDX_MAX_ENTRIES2147483647 INT_MAX2147483647
54};
55
56mode_t
57got_fileindex_entry_perms_get(struct got_fileindex_entry *ie)
58{
59 return ((ie->mode & GOT_FILEIDX_MODE_PERMS0xfff0) >>
60 GOT_FILEIDX_MODE_PERMS_SHIFT4);
61}
62
63static void
64fileindex_entry_perms_set(struct got_fileindex_entry *ie, mode_t mode)
65{
66 ie->mode &= ~GOT_FILEIDX_MODE_PERMS0xfff0;
67 ie->mode |= ((mode << GOT_FILEIDX_MODE_PERMS_SHIFT4) &
68 GOT_FILEIDX_MODE_PERMS0xfff0);
69}
70
71mode_t
72got_fileindex_perms_to_st(struct got_fileindex_entry *ie)
73{
74 mode_t perms = got_fileindex_entry_perms_get(ie);
75 int type = got_fileindex_entry_filetype_get(ie);
76 uint32_t ftype;
77
78 if (type == GOT_FILEIDX_MODE_REGULAR_FILE1 ||
79 type == GOT_FILEIDX_MODE_BAD_SYMLINK3)
80 ftype = S_IFREG0100000;
81 else
82 ftype = S_IFLNK0120000;
83
84 return (ftype | (perms & (S_IRWXU0000700 | S_IRWXG0000070 | S_IRWXO0000007)));
85}
86
87const struct got_error *
88got_fileindex_entry_update(struct got_fileindex_entry *ie,
89 int wt_fd, const char *ondisk_path, uint8_t *blob_sha1,
90 uint8_t *commit_sha1, int update_timestamps)
91{
92 struct stat sb;
93
94 if (fstatat(wt_fd, ondisk_path, &sb, AT_SYMLINK_NOFOLLOW0x02) != 0) {
95 if (!((ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000) &&
96 errno(*__errno()) == ENOENT2))
97 return got_error_from_errno2("fstatat", ondisk_path);
98 sb.st_mode = GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004);
99 } else {
100 if (sb.st_mode & S_IFDIR0040000)
101 return got_error_set_errno(EISDIR21, ondisk_path);
102 ie->flags &= ~GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000;
103 }
104
105
106 if ((ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000) == 0) {
107 if (update_timestamps) {
108 ie->ctime_sec = sb.st_ctim.tv_sec;
109 ie->ctime_nsec = sb.st_ctim.tv_nsec;
110 ie->mtime_sec = sb.st_mtim.tv_sec;
111 ie->mtime_nsec = sb.st_mtim.tv_nsec;
112 }
113 ie->uid = sb.st_uid;
114 ie->gid = sb.st_gid;
115 ie->size = (sb.st_size & 0xffffffff);
116 if (S_ISLNK(sb.st_mode)((sb.st_mode & 0170000) == 0120000)) {
117 got_fileindex_entry_filetype_set(ie,
118 GOT_FILEIDX_MODE_SYMLINK2);
119 fileindex_entry_perms_set(ie, 0);
120 } else {
121 got_fileindex_entry_filetype_set(ie,
122 GOT_FILEIDX_MODE_REGULAR_FILE1);
123 fileindex_entry_perms_set(ie,
124 sb.st_mode & (S_IRWXU0000700 | S_IRWXG0000070 | S_IRWXO0000007));
125 }
126 }
127
128 if (blob_sha1) {
129 memcpy(ie->blob_sha1, blob_sha1, SHA1_DIGEST_LENGTH20);
130 ie->flags &= ~GOT_FILEIDX_F_NO_BLOB0x00020000;
131 } else
132 ie->flags |= GOT_FILEIDX_F_NO_BLOB0x00020000;
133
134 if (commit_sha1) {
135 memcpy(ie->commit_sha1, commit_sha1, SHA1_DIGEST_LENGTH20);
136 ie->flags &= ~GOT_FILEIDX_F_NO_COMMIT0x00040000;
137 } else
138 ie->flags |= GOT_FILEIDX_F_NO_COMMIT0x00040000;
139
140 return NULL((void *)0);
141}
142
143void
144got_fileindex_entry_mark_deleted_from_disk(struct got_fileindex_entry *ie)
145{
146 ie->flags |= GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000;
147}
148
149const struct got_error *
150got_fileindex_entry_alloc(struct got_fileindex_entry **ie,
151 const char *relpath)
152{
153 size_t len;
154
155 *ie = calloc(1, sizeof(**ie));
156 if (*ie == NULL((void *)0))
157 return got_error_from_errno("calloc");
158
159 (*ie)->path = strdup(relpath);
160 if ((*ie)->path == NULL((void *)0)) {
161 const struct got_error *err = got_error_from_errno("strdup");
162 free(*ie);
163 *ie = NULL((void *)0);
164 return err;
165 }
166
167 len = strlen(relpath);
168 if (len > GOT_FILEIDX_F_PATH_LEN0x00000fff)
169 len = GOT_FILEIDX_F_PATH_LEN0x00000fff;
170 (*ie)->flags |= len;
171
172 return NULL((void *)0);
173}
174
175void
176got_fileindex_entry_free(struct got_fileindex_entry *ie)
177{
178 free(ie->path);
179 free(ie);
180}
181
182size_t
183got_fileindex_entry_path_len(const struct got_fileindex_entry *ie)
184{
185 return (size_t)(ie->flags & GOT_FILEIDX_F_PATH_LEN0x00000fff);
186}
187
188uint32_t
189got_fileindex_entry_stage_get(const struct got_fileindex_entry *ie)
190{
191 return ((ie->flags & GOT_FILEIDX_F_STAGE0x0000f000) >> GOT_FILEIDX_F_STAGE_SHIFT12);
192}
193
194void
195got_fileindex_entry_stage_set(struct got_fileindex_entry *ie, uint32_t stage)
196{
197 ie->flags &= ~GOT_FILEIDX_F_STAGE0x0000f000;
198 ie->flags |= ((stage << GOT_FILEIDX_F_STAGE_SHIFT12) &
199 GOT_FILEIDX_F_STAGE0x0000f000);
200}
201
202int
203got_fileindex_entry_filetype_get(struct got_fileindex_entry *ie)
204{
205 return (ie->mode & GOT_FILEIDX_MODE_FILE_TYPE_ONDISK0x0003);
206}
207
208void
209got_fileindex_entry_filetype_set(struct got_fileindex_entry *ie, int type)
210{
211 ie->mode &= ~GOT_FILEIDX_MODE_FILE_TYPE_ONDISK0x0003;
212 ie->mode |= (type & GOT_FILEIDX_MODE_FILE_TYPE_ONDISK0x0003);
213}
214
215void
216got_fileindex_entry_staged_filetype_set(struct got_fileindex_entry *ie, int type)
217{
218 ie->mode &= ~GOT_FILEIDX_MODE_FILE_TYPE_STAGED0x000c;
219 ie->mode |= ((type << GOT_FILEIDX_MODE_FILE_TYPE_STAGED_SHIFT2) &
220 GOT_FILEIDX_MODE_FILE_TYPE_STAGED0x000c);
221}
222
223int
224got_fileindex_entry_staged_filetype_get(struct got_fileindex_entry *ie)
225{
226 return (ie->mode & GOT_FILEIDX_MODE_FILE_TYPE_STAGED0x000c) >>
227 GOT_FILEIDX_MODE_FILE_TYPE_STAGED_SHIFT2;
228}
229
230int
231got_fileindex_entry_has_blob(struct got_fileindex_entry *ie)
232{
233 return (ie->flags & GOT_FILEIDX_F_NO_BLOB0x00020000) == 0;
234}
235
236int
237got_fileindex_entry_has_commit(struct got_fileindex_entry *ie)
238{
239 return (ie->flags & GOT_FILEIDX_F_NO_COMMIT0x00040000) == 0;
240}
241
242int
243got_fileindex_entry_has_file_on_disk(struct got_fileindex_entry *ie)
244{
245 return (ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK0x00080000) == 0;
246}
247
248static const struct got_error *
249add_entry(struct got_fileindex *fileindex, struct got_fileindex_entry *ie)
250{
251 if (fileindex->nentries >= GOT_FILEIDX_MAX_ENTRIES2147483647)
26
Assuming field 'nentries' is < GOT_FILEIDX_MAX_ENTRIES
27
Taking false branch
252 return got_error(GOT_ERR_NO_SPACE9);
253
254 RB_INSERT(got_fileindex_tree, &fileindex->entries, ie)got_fileindex_tree_RB_INSERT(&fileindex->entries, ie);
28
Passing null pointer value via 2nd parameter 'elm'
29
Calling 'got_fileindex_tree_RB_INSERT'
255 fileindex->nentries++;
256 return NULL((void *)0);
257}
258
259const struct got_error *
260got_fileindex_entry_add(struct got_fileindex *fileindex,
261 struct got_fileindex_entry *ie)
262{
263 /* Flag this entry until it gets written out to disk. */
264 ie->flags |= GOT_FILEIDX_F_NOT_FLUSHED0x00010000;
265
266 return add_entry(fileindex, ie);
267}
268
269void
270got_fileindex_entry_remove(struct got_fileindex *fileindex,
271 struct got_fileindex_entry *ie)
272{
273 /*
274 * Removing an entry from the RB tree immediately breaks
275 * in-progress iterations over file index entries.
276 * So flag this entry for removal and remove it once the index
277 * is written out to disk. Meanwhile, pretend this entry no longer
278 * exists if we get queried for it again before then.
279 */
280 ie->flags |= GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000;
281 fileindex->nentries--;
282}
283
284struct got_fileindex_entry *
285got_fileindex_entry_get(struct got_fileindex *fileindex, const char *path,
286 size_t path_len)
287{
288 struct got_fileindex_entry *ie;
289 struct got_fileindex_entry key;
290 memset(&key, 0, sizeof(key));
291 key.path = (char *)path;
292 key.flags = (path_len & GOT_FILEIDX_F_PATH_LEN0x00000fff);
293 ie = RB_FIND(got_fileindex_tree, &fileindex->entries, &key)got_fileindex_tree_RB_FIND(&fileindex->entries, &key
)
;
294 if (ie && (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000))
295 return NULL((void *)0);
296 return ie;
297}
298
299const struct got_error *
300got_fileindex_for_each_entry_safe(struct got_fileindex *fileindex,
301 got_fileindex_cb cb, void *cb_arg)
302{
303 const struct got_error *err;
304 struct got_fileindex_entry *ie, *tmp;
305
306 RB_FOREACH_SAFE(ie, got_fileindex_tree, &fileindex->entries, tmp)for ((ie) = got_fileindex_tree_RB_MINMAX(&fileindex->entries
, -1); ((ie) != ((void *)0)) && ((tmp) = got_fileindex_tree_RB_NEXT
(ie), 1); (ie) = (tmp))
{
307 if (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000)
308 continue;
309 err = (*cb)(cb_arg, ie);
310 if (err)
311 return err;
312 }
313 return NULL((void *)0);
314}
315
316struct got_fileindex *
317got_fileindex_alloc(void)
318{
319 struct got_fileindex *fileindex;
320
321 fileindex = calloc(1, sizeof(*fileindex));
322 if (fileindex == NULL((void *)0))
323 return NULL((void *)0);
324
325 RB_INIT(&fileindex->entries)do { (&fileindex->entries)->rbh_root = ((void *)0);
} while (0)
;
326 return fileindex;
327}
328
329void
330got_fileindex_free(struct got_fileindex *fileindex)
331{
332 struct got_fileindex_entry *ie;
333
334 while ((ie = RB_MIN(got_fileindex_tree, &fileindex->entries)got_fileindex_tree_RB_MINMAX(&fileindex->entries, -1))) {
335 RB_REMOVE(got_fileindex_tree, &fileindex->entries, ie)got_fileindex_tree_RB_REMOVE(&fileindex->entries, ie);
336 got_fileindex_entry_free(ie);
337 }
338 free(fileindex);
339}
340
341static const struct got_error *
342write_fileindex_val64(SHA1_CTX *ctx, uint64_t val, FILE *outfile)
343{
344 size_t n;
345
346 val = htobe64(val)(__uint64_t)(__builtin_constant_p(val) ? (__uint64_t)((((__uint64_t
)(val) & 0xff) << 56) | ((__uint64_t)(val) & 0xff00ULL
) << 40 | ((__uint64_t)(val) & 0xff0000ULL) <<
24 | ((__uint64_t)(val) & 0xff000000ULL) << 8 | ((
__uint64_t)(val) & 0xff00000000ULL) >> 8 | ((__uint64_t
)(val) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(val
) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(val)
& 0xff00000000000000ULL) >> 56) : __swap64md(val))
;
347 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
348 n = fwrite(&val, 1, sizeof(val), outfile);
349 if (n != sizeof(val))
350 return got_ferror(outfile, GOT_ERR_IO6);
351 return NULL((void *)0);
352}
353
354static const struct got_error *
355write_fileindex_val32(SHA1_CTX *ctx, uint32_t val, FILE *outfile)
356{
357 size_t n;
358
359 val = htobe32(val)(__uint32_t)(__builtin_constant_p(val) ? (__uint32_t)(((__uint32_t
)(val) & 0xff) << 24 | ((__uint32_t)(val) & 0xff00
) << 8 | ((__uint32_t)(val) & 0xff0000) >> 8 |
((__uint32_t)(val) & 0xff000000) >> 24) : __swap32md
(val))
;
360 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
361 n = fwrite(&val, 1, sizeof(val), outfile);
362 if (n != sizeof(val))
363 return got_ferror(outfile, GOT_ERR_IO6);
364 return NULL((void *)0);
365}
366
367static const struct got_error *
368write_fileindex_val16(SHA1_CTX *ctx, uint16_t val, FILE *outfile)
369{
370 size_t n;
371
372 val = htobe16(val)(__uint16_t)(__builtin_constant_p(val) ? (__uint16_t)(((__uint16_t
)(val) & 0xffU) << 8 | ((__uint16_t)(val) & 0xff00U
) >> 8) : __swap16md(val))
;
373 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
374 n = fwrite(&val, 1, sizeof(val), outfile);
375 if (n != sizeof(val))
376 return got_ferror(outfile, GOT_ERR_IO6);
377 return NULL((void *)0);
378}
379
380static const struct got_error *
381write_fileindex_path(SHA1_CTX *ctx, const char *path, FILE *outfile)
382{
383 size_t n, len, pad = 0;
384 static const uint8_t zero[8] = { 0 };
385
386 len = strlen(path);
387 while ((len + pad) % 8 != 0)
388 pad++;
389 if (pad == 0)
390 pad = 8; /* NUL-terminate */
391
392 SHA1Update(ctx, path, len);
393 n = fwrite(path, 1, len, outfile);
394 if (n != len)
395 return got_ferror(outfile, GOT_ERR_IO6);
396 SHA1Update(ctx, zero, pad);
397 n = fwrite(zero, 1, pad, outfile);
398 if (n != pad)
399 return got_ferror(outfile, GOT_ERR_IO6);
400 return NULL((void *)0);
401}
402
403static const struct got_error *
404write_fileindex_entry(SHA1_CTX *ctx, struct got_fileindex_entry *ie,
405 FILE *outfile)
406{
407 const struct got_error *err;
408 size_t n;
409 uint32_t stage;
410
411 err = write_fileindex_val64(ctx, ie->ctime_sec, outfile);
412 if (err)
413 return err;
414 err = write_fileindex_val64(ctx, ie->ctime_nsec, outfile);
415 if (err)
416 return err;
417 err = write_fileindex_val64(ctx, ie->mtime_sec, outfile);
418 if (err)
419 return err;
420 err = write_fileindex_val64(ctx, ie->mtime_nsec, outfile);
421 if (err)
422 return err;
423
424 err = write_fileindex_val32(ctx, ie->uid, outfile);
425 if (err)
426 return err;
427 err = write_fileindex_val32(ctx, ie->gid, outfile);
428 if (err)
429 return err;
430 err = write_fileindex_val32(ctx, ie->size, outfile);
431 if (err)
432 return err;
433
434 err = write_fileindex_val16(ctx, ie->mode, outfile);
435 if (err)
436 return err;
437
438 SHA1Update(ctx, ie->blob_sha1, SHA1_DIGEST_LENGTH20);
439 n = fwrite(ie->blob_sha1, 1, SHA1_DIGEST_LENGTH20, outfile);
440 if (n != SHA1_DIGEST_LENGTH20)
441 return got_ferror(outfile, GOT_ERR_IO6);
442
443 SHA1Update(ctx, ie->commit_sha1, SHA1_DIGEST_LENGTH20);
444 n = fwrite(ie->commit_sha1, 1, SHA1_DIGEST_LENGTH20, outfile);
445 if (n != SHA1_DIGEST_LENGTH20)
446 return got_ferror(outfile, GOT_ERR_IO6);
447
448 err = write_fileindex_val32(ctx, ie->flags, outfile);
449 if (err)
450 return err;
451
452 err = write_fileindex_path(ctx, ie->path, outfile);
453 if (err)
454 return err;
455
456 stage = got_fileindex_entry_stage_get(ie);
457 if (stage == GOT_FILEIDX_STAGE_MODIFY1 ||
458 stage == GOT_FILEIDX_STAGE_ADD2) {
459 SHA1Update(ctx, ie->staged_blob_sha1, SHA1_DIGEST_LENGTH20);
460 n = fwrite(ie->staged_blob_sha1, 1, SHA1_DIGEST_LENGTH20,
461 outfile);
462 if (n != SHA1_DIGEST_LENGTH20)
463 return got_ferror(outfile, GOT_ERR_IO6);
464 }
465
466 return NULL((void *)0);
467}
468
469const struct got_error *
470got_fileindex_write(struct got_fileindex *fileindex, FILE *outfile)
471{
472 const struct got_error *err = NULL((void *)0);
473 struct got_fileindex_hdr hdr;
474 SHA1_CTX ctx;
475 uint8_t sha1[SHA1_DIGEST_LENGTH20];
476 size_t n;
477 struct got_fileindex_entry *ie, *tmp;
478
479 SHA1Init(&ctx);
480
481 hdr.signature = htobe32(GOT_FILE_INDEX_SIGNATURE)(__uint32_t)(__builtin_constant_p(0x676f7449) ? (__uint32_t)(
((__uint32_t)(0x676f7449) & 0xff) << 24 | ((__uint32_t
)(0x676f7449) & 0xff00) << 8 | ((__uint32_t)(0x676f7449
) & 0xff0000) >> 8 | ((__uint32_t)(0x676f7449) &
0xff000000) >> 24) : __swap32md(0x676f7449))
;
482 hdr.version = htobe32(GOT_FILE_INDEX_VERSION)(__uint32_t)(__builtin_constant_p(2) ? (__uint32_t)(((__uint32_t
)(2) & 0xff) << 24 | ((__uint32_t)(2) & 0xff00)
<< 8 | ((__uint32_t)(2) & 0xff0000) >> 8 | (
(__uint32_t)(2) & 0xff000000) >> 24) : __swap32md(2
))
;
483 hdr.nentries = htobe32(fileindex->nentries)(__uint32_t)(__builtin_constant_p(fileindex->nentries) ? (
__uint32_t)(((__uint32_t)(fileindex->nentries) & 0xff)
<< 24 | ((__uint32_t)(fileindex->nentries) & 0xff00
) << 8 | ((__uint32_t)(fileindex->nentries) & 0xff0000
) >> 8 | ((__uint32_t)(fileindex->nentries) & 0xff000000
) >> 24) : __swap32md(fileindex->nentries))
;
484
485 SHA1Update(&ctx, (uint8_t *)&hdr.signature, sizeof(hdr.signature));
486 SHA1Update(&ctx, (uint8_t *)&hdr.version, sizeof(hdr.version));
487 SHA1Update(&ctx, (uint8_t *)&hdr.nentries, sizeof(hdr.nentries));
488 n = fwrite(&hdr.signature, 1, sizeof(hdr.signature), outfile);
489 if (n != sizeof(hdr.signature))
490 return got_ferror(outfile, GOT_ERR_IO6);
491 n = fwrite(&hdr.version, 1, sizeof(hdr.version), outfile);
492 if (n != sizeof(hdr.version))
493 return got_ferror(outfile, GOT_ERR_IO6);
494 n = fwrite(&hdr.nentries, 1, sizeof(hdr.nentries), outfile);
495 if (n != sizeof(hdr.nentries))
496 return got_ferror(outfile, GOT_ERR_IO6);
497
498 RB_FOREACH_SAFE(ie, got_fileindex_tree, &fileindex->entries, tmp)for ((ie) = got_fileindex_tree_RB_MINMAX(&fileindex->entries
, -1); ((ie) != ((void *)0)) && ((tmp) = got_fileindex_tree_RB_NEXT
(ie), 1); (ie) = (tmp))
{
499 ie->flags &= ~GOT_FILEIDX_F_NOT_FLUSHED0x00010000;
500 if (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000) {
501 RB_REMOVE(got_fileindex_tree, &fileindex->entries, ie)got_fileindex_tree_RB_REMOVE(&fileindex->entries, ie);
502 got_fileindex_entry_free(ie);
503 continue;
504 }
505 err = write_fileindex_entry(&ctx, ie, outfile);
506 if (err)
507 return err;
508 }
509
510 SHA1Final(sha1, &ctx);
511 n = fwrite(sha1, 1, sizeof(sha1), outfile);
512 if (n != sizeof(sha1))
513 return got_ferror(outfile, GOT_ERR_IO6);
514
515 if (fflush(outfile) != 0)
516 return got_error_from_errno("fflush");
517
518 return NULL((void *)0);
519}
520
521static const struct got_error *
522read_fileindex_val64(uint64_t *val, SHA1_CTX *ctx, FILE *infile)
523{
524 size_t n;
525
526 n = fread(val, 1, sizeof(*val), infile);
527 if (n != sizeof(*val))
528 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
529 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
530 *val = be64toh(*val)(__uint64_t)(__builtin_constant_p(*val) ? (__uint64_t)((((__uint64_t
)(*val) & 0xff) << 56) | ((__uint64_t)(*val) & 0xff00ULL
) << 40 | ((__uint64_t)(*val) & 0xff0000ULL) <<
24 | ((__uint64_t)(*val) & 0xff000000ULL) << 8 | (
(__uint64_t)(*val) & 0xff00000000ULL) >> 8 | ((__uint64_t
)(*val) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(
*val) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(
*val) & 0xff00000000000000ULL) >> 56) : __swap64md(
*val))
;
531 return NULL((void *)0);
532}
533
534static const struct got_error *
535read_fileindex_val32(uint32_t *val, SHA1_CTX *ctx, FILE *infile)
536{
537 size_t n;
538
539 n = fread(val, 1, sizeof(*val), infile);
540 if (n != sizeof(*val))
541 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
542 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
543 *val = be32toh(*val)(__uint32_t)(__builtin_constant_p(*val) ? (__uint32_t)(((__uint32_t
)(*val) & 0xff) << 24 | ((__uint32_t)(*val) & 0xff00
) << 8 | ((__uint32_t)(*val) & 0xff0000) >> 8
| ((__uint32_t)(*val) & 0xff000000) >> 24) : __swap32md
(*val))
;
544 return NULL((void *)0);
545}
546
547static const struct got_error *
548read_fileindex_val16(uint16_t *val, SHA1_CTX *ctx, FILE *infile)
549{
550 size_t n;
551
552 n = fread(val, 1, sizeof(*val), infile);
553 if (n != sizeof(*val))
554 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
555 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
556 *val = be16toh(*val)(__uint16_t)(__builtin_constant_p(*val) ? (__uint16_t)(((__uint16_t
)(*val) & 0xffU) << 8 | ((__uint16_t)(*val) & 0xff00U
) >> 8) : __swap16md(*val))
;
557 return NULL((void *)0);
558}
559
560static const struct got_error *
561read_fileindex_path(char **path, SHA1_CTX *ctx, FILE *infile)
562{
563 const struct got_error *err = NULL((void *)0);
564 const size_t chunk_size = 8;
565 size_t n, len = 0, totlen = chunk_size;
566
567 *path = malloc(totlen);
568 if (*path == NULL((void *)0))
569 return got_error_from_errno("malloc");
570
571 do {
572 if (len + chunk_size > totlen) {
573 char *p = reallocarray(*path, totlen + chunk_size, 1);
574 if (p == NULL((void *)0)) {
575 err = got_error_from_errno("reallocarray");
576 break;
577 }
578 totlen += chunk_size;
579 *path = p;
580 }
581 n = fread(*path + len, 1, chunk_size, infile);
582 if (n != chunk_size) {
583 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
584 break;
585 }
586 SHA1Update(ctx, *path + len, chunk_size);
587 len += chunk_size;
588 } while (memchr(*path + len - chunk_size, '\0', chunk_size) == NULL((void *)0));
589
590 if (err) {
591 free(*path);
592 *path = NULL((void *)0);
593 }
594 return err;
595}
596
597static const struct got_error *
598read_fileindex_entry(struct got_fileindex_entry **iep, SHA1_CTX *ctx,
599 FILE *infile, uint32_t version)
600{
601 const struct got_error *err;
602 struct got_fileindex_entry *ie;
603 size_t n;
604
605 *iep = NULL((void *)0);
17
Null pointer value stored to 'ie'
606
607 ie = calloc(1, sizeof(*ie));
608 if (ie == NULL((void *)0))
18
Assuming 'ie' is equal to NULL
19
Taking true branch
609 return got_error_from_errno("calloc");
20
Returning pointer, which participates in a condition later
610
611 err = read_fileindex_val64(&ie->ctime_sec, ctx, infile);
612 if (err)
613 goto done;
614 err = read_fileindex_val64(&ie->ctime_nsec, ctx, infile);
615 if (err)
616 goto done;
617 err = read_fileindex_val64(&ie->mtime_sec, ctx, infile);
618 if (err)
619 goto done;
620 err = read_fileindex_val64(&ie->mtime_nsec, ctx, infile);
621 if (err)
622 goto done;
623
624 err = read_fileindex_val32(&ie->uid, ctx, infile);
625 if (err)
626 goto done;
627 err = read_fileindex_val32(&ie->gid, ctx, infile);
628 if (err)
629 goto done;
630 err = read_fileindex_val32(&ie->size, ctx, infile);
631 if (err)
632 goto done;
633
634 err = read_fileindex_val16(&ie->mode, ctx, infile);
635 if (err)
636 goto done;
637
638 n = fread(ie->blob_sha1, 1, SHA1_DIGEST_LENGTH20, infile);
639 if (n != SHA1_DIGEST_LENGTH20) {
640 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
641 goto done;
642 }
643 SHA1Update(ctx, ie->blob_sha1, SHA1_DIGEST_LENGTH20);
644
645 n = fread(ie->commit_sha1, 1, SHA1_DIGEST_LENGTH20, infile);
646 if (n != SHA1_DIGEST_LENGTH20) {
647 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
648 goto done;
649 }
650 SHA1Update(ctx, ie->commit_sha1, SHA1_DIGEST_LENGTH20);
651
652 err = read_fileindex_val32(&ie->flags, ctx, infile);
653 if (err)
654 goto done;
655
656 err = read_fileindex_path(&ie->path, ctx, infile);
657 if (err)
658 goto done;
659
660 if (version >= 2) {
661 uint32_t stage = got_fileindex_entry_stage_get(ie);
662 if (stage == GOT_FILEIDX_STAGE_MODIFY1 ||
663 stage == GOT_FILEIDX_STAGE_ADD2) {
664 n = fread(ie->staged_blob_sha1, 1, SHA1_DIGEST_LENGTH20,
665 infile);
666 if (n != SHA1_DIGEST_LENGTH20) {
667 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
668 goto done;
669 }
670 SHA1Update(ctx, ie->staged_blob_sha1, SHA1_DIGEST_LENGTH20);
671 }
672 } else {
673 /* GOT_FILE_INDEX_VERSION 1 does not support staging. */
674 ie->flags &= ~GOT_FILEIDX_F_STAGE0x0000f000;
675 }
676
677done:
678 if (err)
679 got_fileindex_entry_free(ie);
680 else
681 *iep = ie;
682 return err;
683}
684
685const struct got_error *
686got_fileindex_read(struct got_fileindex *fileindex, FILE *infile)
687{
688 const struct got_error *err = NULL((void *)0);
689 struct got_fileindex_hdr hdr;
690 SHA1_CTX ctx;
691 struct got_fileindex_entry *ie;
692 uint8_t sha1_expected[SHA1_DIGEST_LENGTH20];
693 uint8_t sha1[SHA1_DIGEST_LENGTH20];
694 size_t n;
695 int i;
696
697 SHA1Init(&ctx);
698
699 n = fread(&hdr.signature, 1, sizeof(hdr.signature), infile);
700 if (n != sizeof(hdr.signature)) {
1
Assuming the condition is false
2
Taking false branch
701 if (n == 0) /* EOF */
702 return NULL((void *)0);
703 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
704 }
705 n = fread(&hdr.version, 1, sizeof(hdr.version), infile);
706 if (n != sizeof(hdr.version)) {
3
Assuming the condition is false
4
Taking false branch
707 if (n == 0) /* EOF */
708 return NULL((void *)0);
709 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
710 }
711 n = fread(&hdr.nentries, 1, sizeof(hdr.nentries), infile);
712 if (n != sizeof(hdr.nentries)) {
5
Assuming the condition is false
6
Taking false branch
713 if (n == 0) /* EOF */
714 return NULL((void *)0);
715 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
716 }
717
718 SHA1Update(&ctx, (uint8_t *)&hdr.signature, sizeof(hdr.signature));
719 SHA1Update(&ctx, (uint8_t *)&hdr.version, sizeof(hdr.version));
720 SHA1Update(&ctx, (uint8_t *)&hdr.nentries, sizeof(hdr.nentries));
721
722 hdr.signature = be32toh(hdr.signature)(__uint32_t)(__builtin_constant_p(hdr.signature) ? (__uint32_t
)(((__uint32_t)(hdr.signature) & 0xff) << 24 | ((__uint32_t
)(hdr.signature) & 0xff00) << 8 | ((__uint32_t)(hdr
.signature) & 0xff0000) >> 8 | ((__uint32_t)(hdr.signature
) & 0xff000000) >> 24) : __swap32md(hdr.signature))
;
7
'?' condition is false
723 hdr.version = be32toh(hdr.version)(__uint32_t)(__builtin_constant_p(hdr.version) ? (__uint32_t)
(((__uint32_t)(hdr.version) & 0xff) << 24 | ((__uint32_t
)(hdr.version) & 0xff00) << 8 | ((__uint32_t)(hdr.version
) & 0xff0000) >> 8 | ((__uint32_t)(hdr.version) &
0xff000000) >> 24) : __swap32md(hdr.version))
;
8
'?' condition is false
724 hdr.nentries = be32toh(hdr.nentries)(__uint32_t)(__builtin_constant_p(hdr.nentries) ? (__uint32_t
)(((__uint32_t)(hdr.nentries) & 0xff) << 24 | ((__uint32_t
)(hdr.nentries) & 0xff00) << 8 | ((__uint32_t)(hdr.
nentries) & 0xff0000) >> 8 | ((__uint32_t)(hdr.nentries
) & 0xff000000) >> 24) : __swap32md(hdr.nentries))
;
9
'?' condition is false
725
726 if (hdr.signature != GOT_FILE_INDEX_SIGNATURE0x676f7449)
10
Assuming field 'signature' is equal to GOT_FILE_INDEX_SIGNATURE
11
Taking false branch
727 return got_error(GOT_ERR_FILEIDX_SIG51);
728 if (hdr.version > GOT_FILE_INDEX_VERSION2)
12
Assuming field 'version' is <= GOT_FILE_INDEX_VERSION
13
Taking false branch
729 return got_error(GOT_ERR_FILEIDX_VER52);
730
731 for (i = 0; i < hdr.nentries; i++) {
14
Assuming 'i' is < field 'nentries'
15
Loop condition is true. Entering loop body
732 err = read_fileindex_entry(&ie, &ctx, infile, hdr.version);
16
Calling 'read_fileindex_entry'
21
Returning from 'read_fileindex_entry'
733 if (err)
22
Assuming 'err' is null
23
Taking false branch
734 return err;
735 err = add_entry(fileindex, ie);
24
Passing null pointer value via 2nd parameter 'ie'
25
Calling 'add_entry'
736 if (err)
737 return err;
738 }
739
740 n = fread(sha1_expected, 1, sizeof(sha1_expected), infile);
741 if (n != sizeof(sha1_expected))
742 return got_ferror(infile, GOT_ERR_FILEIDX_BAD56);
743 SHA1Final(sha1, &ctx);
744 if (memcmp(sha1, sha1_expected, SHA1_DIGEST_LENGTH20) != 0)
745 return got_error(GOT_ERR_FILEIDX_CSUM53);
746
747 return NULL((void *)0);
748}
749
750static struct got_fileindex_entry *
751walk_fileindex(struct got_fileindex *fileindex, struct got_fileindex_entry *ie)
752{
753 struct got_fileindex_entry *next;
754
755 next = RB_NEXT(got_fileindex_tree, &fileindex->entries, ie)got_fileindex_tree_RB_NEXT(ie);
756
757 /* Skip entries which were added or removed by diff callbacks. */
758 while (next && (next->flags & (GOT_FILEIDX_F_NOT_FLUSHED0x00010000 |
759 GOT_FILEIDX_F_REMOVE_ON_FLUSH0x00100000)))
760 next = RB_NEXT(got_fileindex_tree, &fileindex->entries, next)got_fileindex_tree_RB_NEXT(next);
761
762 return next;
763}
764
765static const struct got_error *
766diff_fileindex_tree(struct got_fileindex *, struct got_fileindex_entry **ie,
767 struct got_tree_object *tree, const char *, const char *,
768 struct got_repository *, struct got_fileindex_diff_tree_cb *, void *);
769
770static const struct got_error *
771walk_tree(struct got_tree_entry **next, struct got_fileindex *fileindex,
772 struct got_fileindex_entry **ie, struct got_tree_object *tree, int *tidx,
773 const char *path, const char *entry_name, struct got_repository *repo,
774 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
775{
776 const struct got_error *err = NULL((void *)0);
777 struct got_tree_entry *te = got_object_tree_get_entry(tree, *tidx);
778
779 if (!got_object_tree_entry_is_submodule(te) &&
780 S_ISDIR(got_tree_entry_get_mode(te))((got_tree_entry_get_mode(te) & 0170000) == 0040000)) {
781 char *subpath;
782 struct got_tree_object *subtree;
783
784 if (asprintf(&subpath, "%s%s%s", path,
785 path[0] == '\0' ? "" : "/",
786 got_tree_entry_get_name(te)) == -1)
787 return got_error_from_errno("asprintf");
788
789 err = got_object_open_as_tree(&subtree, repo,
790 got_tree_entry_get_id(te));
791 if (err) {
792 free(subpath);
793 return err;
794 }
795
796 err = diff_fileindex_tree(fileindex, ie, subtree, subpath,
797 entry_name, repo, cb, cb_arg);
798 free(subpath);
799 got_object_tree_close(subtree);
800 if (err)
801 return err;
802 }
803
804 (*tidx)++;
805 *next = got_object_tree_get_entry(tree, *tidx);
806 return NULL((void *)0);
807}
808
809static const struct got_error *
810diff_fileindex_tree(struct got_fileindex *fileindex,
811 struct got_fileindex_entry **ie, struct got_tree_object *tree,
812 const char *path, const char *entry_name, struct got_repository *repo,
813 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
814{
815 const struct got_error *err = NULL((void *)0);
816 struct got_tree_entry *te = NULL((void *)0);
817 size_t path_len = strlen(path);
818 struct got_fileindex_entry *next;
819 int tidx = 0;
820
821 te = got_object_tree_get_entry(tree, tidx);
822 while ((*ie && got_path_is_child((*ie)->path, path, path_len)) || te) {
823 if (te && *ie) {
824 char *te_path;
825 const char *te_name = got_tree_entry_get_name(te);
826 int cmp;
827 if (asprintf(&te_path, "%s/%s", path, te_name) == -1) {
828 err = got_error_from_errno("asprintf");
829 break;
830 }
831 cmp = got_path_cmp((*ie)->path, te_path,
832 got_fileindex_entry_path_len(*ie), strlen(te_path));
833 free(te_path);
834 if (cmp == 0) {
835 if (got_path_is_child((*ie)->path, path,
836 path_len) &&
837 !got_object_tree_entry_is_submodule(te) &&
838 (entry_name == NULL((void *)0) ||
839 strcmp(te_name, entry_name) == 0)) {
840 err = cb->diff_old_new(cb_arg, *ie, te,
841 path);
842 if (err || entry_name)
843 break;
844 }
845 *ie = walk_fileindex(fileindex, *ie);
846 err = walk_tree(&te, fileindex, ie, tree, &tidx,
847 path, entry_name, repo, cb, cb_arg);
848 } else if (cmp < 0) {
849 next = walk_fileindex(fileindex, *ie);
850 if (got_path_is_child((*ie)->path, path,
851 path_len) && entry_name == NULL((void *)0)) {
852 err = cb->diff_old(cb_arg, *ie, path);
853 if (err || entry_name)
854 break;
855 }
856 *ie = next;
857 } else {
858 if ((entry_name == NULL((void *)0) ||
859 strcmp(te_name, entry_name) == 0)) {
860 err = cb->diff_new(cb_arg, te, path);
861 if (err || entry_name)
862 break;
863 }
864 err = walk_tree(&te, fileindex, ie, tree, &tidx,
865 path, entry_name, repo, cb, cb_arg);
866 }
867 if (err)
868 break;
869 } else if (*ie) {
870 next = walk_fileindex(fileindex, *ie);
871 if (got_path_is_child((*ie)->path, path, path_len) &&
872 (entry_name == NULL((void *)0) ||
873 (te && strcmp(got_tree_entry_get_name(te),
874 entry_name) == 0))) {
875 err = cb->diff_old(cb_arg, *ie, path);
876 if (err || entry_name)
877 break;
878 }
879 *ie = next;
880 } else if (te) {
881 if (!got_object_tree_entry_is_submodule(te) &&
882 (entry_name == NULL((void *)0) ||
883 strcmp(got_tree_entry_get_name(te), entry_name)
884 == 0)) {
885 err = cb->diff_new(cb_arg, te, path);
886 if (err || entry_name)
887 break;
888 }
889 err = walk_tree(&te, fileindex, ie, tree, &tidx, path,
890 entry_name, repo, cb, cb_arg);
891 if (err)
892 break;
893 }
894 }
895
896 return err;
897}
898
899const struct got_error *
900got_fileindex_diff_tree(struct got_fileindex *fileindex,
901 struct got_tree_object *tree, const char *path, const char *entry_name,
902 struct got_repository *repo,
903 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
904{
905 struct got_fileindex_entry *ie;
906 ie = RB_MIN(got_fileindex_tree, &fileindex->entries)got_fileindex_tree_RB_MINMAX(&fileindex->entries, -1);
907 while (ie && !got_path_is_child(ie->path, path, strlen(path)))
908 ie = walk_fileindex(fileindex, ie);
909 return diff_fileindex_tree(fileindex, &ie, tree, path, entry_name, repo,
910 cb, cb_arg);
911}
912
913static const struct got_error *
914diff_fileindex_dir(struct got_fileindex *, struct got_fileindex_entry **,
915 struct got_pathlist_head *, int, const char *, const char *,
916 struct got_repository *, struct got_fileindex_diff_dir_cb *, void *);
917
918static const struct got_error *
919read_dirlist(struct got_pathlist_head *dirlist, DIR *dir, const char *path)
920{
921 const struct got_error *err = NULL((void *)0);
922 struct got_pathlist_entry *new = NULL((void *)0);
923 struct dirent *dep = NULL((void *)0);
924 struct dirent *de = NULL((void *)0);
925
926 for (;;) {
927 de = malloc(sizeof(struct dirent) + NAME_MAX255 + 1);
928 if (de == NULL((void *)0)) {
929 err = got_error_from_errno("malloc");
930 break;
931 }
932
933 if (readdir_r(dir, de, &dep) != 0) {
934 err = got_error_from_errno("readdir_r");
935 free(de);
936 break;
937 }
938 if (dep == NULL((void *)0)) {
939 free(de);
940 break;
941 }
942
943 if (strcmp(de->d_name, ".") == 0 ||
944 strcmp(de->d_name, "..") == 0 ||
945 (path[0] == '\0' &&
946 strcmp(de->d_name, GOT_WORKTREE_GOT_DIR".got") == 0)) {
947 free(de);
948 continue;
949 }
950
951 err = got_pathlist_insert(&new, dirlist, de->d_name, de);
952 if (err) {
953 free(de);
954 break;
955 }
956 if (new == NULL((void *)0)) {
957 err = got_error(GOT_ERR_DIR_DUP_ENTRY59);
958 free(de);
959 break;
960 }
961 }
962
963 return err;
964}
965
966void
967free_dirlist(struct got_pathlist_head *dirlist)
968{
969 struct got_pathlist_entry *dle;
970
971 TAILQ_FOREACH(dle, dirlist, entry)for((dle) = ((dirlist)->tqh_first); (dle) != ((void *)0); (
dle) = ((dle)->entry.tqe_next))
972 free(dle->data);
973 got_pathlist_free(dirlist);
974}
975
976static const struct got_error *
977walk_dir(struct got_pathlist_entry **next, struct got_fileindex *fileindex,
978 struct got_fileindex_entry **ie, struct got_pathlist_entry *dle, int fd,
979 const char *path, const char *rootpath, struct got_repository *repo,
980 struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
981{
982 const struct got_error *err = NULL((void *)0);
983 struct dirent *de = dle->data;
984 DIR *subdir = NULL((void *)0);
985 int subdirfd = -1;
986 int type;
987
988 *next = NULL((void *)0);
989
990 if (de->d_type == DT_UNKNOWN0) {
991 /* Occurs on NFS mounts without "readdir plus" RPC. */
992 char *dir_path;
993 if (asprintf(&dir_path, "%s/%s", rootpath, path) == -1)
994 return got_error_from_errno("asprintf");
995 err = got_path_dirent_type(&type, dir_path, de);
996 free(dir_path);
997 if (err)
998 return err;
999 } else
1000 type = de->d_type;
1001
1002 if (type == DT_DIR4) {
1003 char *subpath;
1004 char *subdirpath;
1005 struct got_pathlist_head subdirlist;
1006
1007 TAILQ_INIT(&subdirlist)do { (&subdirlist)->tqh_first = ((void *)0); (&subdirlist
)->tqh_last = &(&subdirlist)->tqh_first; } while
(0)
;
1008
1009 if (asprintf(&subpath, "%s%s%s", path,
1010 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1011 return got_error_from_errno("asprintf");
1012
1013 if (asprintf(&subdirpath, "%s/%s", rootpath, subpath) == -1) {
1014 free(subpath);
1015 return got_error_from_errno("asprintf");
1016 }
1017
1018 subdirfd = openat(fd, de->d_name,
1019 O_RDONLY0x0000 | O_NOFOLLOW0x0100 | O_DIRECTORY0x20000);
1020 if (subdirfd == -1) {
1021 if (errno(*__errno()) == EACCES13) {
1022 *next = TAILQ_NEXT(dle, entry)((dle)->entry.tqe_next);
1023 return NULL((void *)0);
1024 }
1025 err = got_error_from_errno2("openat", subdirpath);
1026 free(subpath);
1027 free(subdirpath);
1028 return err;
1029 }
1030
1031 subdir = fdopendir(subdirfd);
1032 if (subdir == NULL((void *)0))
1033 return got_error_from_errno2("fdopendir", path);
1034 subdirfd = -1;
1035 err = read_dirlist(&subdirlist, subdir, subdirpath);
1036 if (err) {
1037 free(subpath);
1038 free(subdirpath);
1039 closedir(subdir);
1040 return err;
1041 }
1042 err = diff_fileindex_dir(fileindex, ie, &subdirlist,
1043 dirfd(subdir), rootpath, subpath, repo, cb, cb_arg);
1044 if (subdir && closedir(subdir) == -1 && err == NULL((void *)0))
1045 err = got_error_from_errno2("closedir", subdirpath);
1046 free(subpath);
1047 free(subdirpath);
1048 free_dirlist(&subdirlist);
1049 if (err)
1050 return err;
1051 }
1052
1053 *next = TAILQ_NEXT(dle, entry)((dle)->entry.tqe_next);
1054 return NULL((void *)0);
1055}
1056
1057static const struct got_error *
1058diff_fileindex_dir(struct got_fileindex *fileindex,
1059 struct got_fileindex_entry **ie, struct got_pathlist_head *dirlist,
1060 int dirfd, const char *rootpath, const char *path,
1061 struct got_repository *repo,
1062 struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
1063{
1064 const struct got_error *err = NULL((void *)0);
1065 struct dirent *de = NULL((void *)0);
1066 size_t path_len = strlen(path);
1067 struct got_pathlist_entry *dle;
1068
1069 if (cb->diff_traverse) {
1070 err = cb->diff_traverse(cb_arg, path, dirfd);
1071 if (err)
1072 return err;
1073 }
1074
1075 dle = TAILQ_FIRST(dirlist)((dirlist)->tqh_first);
1076 while ((*ie && got_path_is_child((*ie)->path, path, path_len)) || dle) {
1077 if (dle && *ie) {
1078 char *de_path;
1079 int cmp;
1080 de = dle->data;
1081 if (asprintf(&de_path, "%s/%s", path,
1082 de->d_name) == -1) {
1083 err = got_error_from_errno("asprintf");
1084 break;
1085 }
1086 cmp = got_path_cmp((*ie)->path, de_path,
1087 got_fileindex_entry_path_len(*ie),
1088 strlen(path) + 1 + de->d_namlen);
1089 free(de_path);
1090 if (cmp == 0) {
1091 err = cb->diff_old_new(cb_arg, *ie, de, path,
1092 dirfd);
1093 if (err)
1094 break;
1095 *ie = walk_fileindex(fileindex, *ie);
1096 err = walk_dir(&dle, fileindex, ie, dle, dirfd,
1097 path, rootpath, repo, cb, cb_arg);
1098 } else if (cmp < 0 ) {
1099 err = cb->diff_old(cb_arg, *ie, path);
1100 if (err)
1101 break;
1102 *ie = walk_fileindex(fileindex, *ie);
1103 } else {
1104 err = cb->diff_new(cb_arg, de, path, dirfd);
1105 if (err)
1106 break;
1107 err = walk_dir(&dle, fileindex, ie, dle, dirfd,
1108 path, rootpath, repo, cb, cb_arg);
1109 }
1110 if (err)
1111 break;
1112 } else if (*ie) {
1113 err = cb->diff_old(cb_arg, *ie, path);
1114 if (err)
1115 break;
1116 *ie = walk_fileindex(fileindex, *ie);
1117 } else if (dle) {
1118 de = dle->data;
1119 err = cb->diff_new(cb_arg, de, path, dirfd);
1120 if (err)
1121 break;
1122 err = walk_dir(&dle, fileindex, ie, dle, dirfd, path,
1123 rootpath, repo, cb, cb_arg);
1124 if (err)
1125 break;
1126 }
1127 }
1128
1129 return err;
1130}
1131
1132const struct got_error *
1133got_fileindex_diff_dir(struct got_fileindex *fileindex, int fd,
1134 const char *rootpath, const char *path, struct got_repository *repo,
1135 struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
1136{
1137 const struct got_error *err;
1138 struct got_fileindex_entry *ie;
1139 struct got_pathlist_head dirlist;
1140 int fd2;
1141 DIR *dir;
1142
1143 TAILQ_INIT(&dirlist)do { (&dirlist)->tqh_first = ((void *)0); (&dirlist
)->tqh_last = &(&dirlist)->tqh_first; } while (
0)
;
1144
1145 /*
1146 * Duplicate the file descriptor so we can call closedir() below
1147 * without closing the file descriptor passed in by our caller.
1148 */
1149 fd2 = dup(fd);
1150 if (fd2 == -1)
1151 return got_error_from_errno2("dup", path);
1152 if (lseek(fd2, 0, SEEK_SET0) == -1) {
1153 err = got_error_from_errno2("lseek", path);
1154 close(fd2);
1155 return err;
1156 }
1157 dir = fdopendir(fd2);
1158 if (dir == NULL((void *)0)) {
1159 err = got_error_from_errno2("fdopendir", path);
1160 close(fd2);
1161 return err;
1162 }
1163 err = read_dirlist(&dirlist, dir, path);
1164 if (err) {
1165 closedir(dir);
1166 return err;
1167 }
1168
1169 ie = RB_MIN(got_fileindex_tree, &fileindex->entries)got_fileindex_tree_RB_MINMAX(&fileindex->entries, -1);
1170 while (ie && !got_path_is_child(ie->path, path, strlen(path)))
1171 ie = walk_fileindex(fileindex, ie);
1172 err = diff_fileindex_dir(fileindex, &ie, &dirlist, dirfd(dir),
1173 rootpath, path, repo, cb, cb_arg);
1174
1175 if (closedir(dir) == -1 && err == NULL((void *)0))
1176 err = got_error_from_errno2("closedir", path);
1177 free_dirlist(&dirlist);
1178 return err;
1179}
1180
1181RB_GENERATE(got_fileindex_tree, got_fileindex_entry, entry, got_fileindex_cmp)void got_fileindex_tree_RB_INSERT_COLOR(struct got_fileindex_tree
*head, struct got_fileindex_entry *elm) { struct got_fileindex_entry
*parent, *gparent, *tmp; while ((parent = (elm)->entry.rbe_parent
) && (parent)->entry.rbe_color == 1) { gparent = (
parent)->entry.rbe_parent; if (parent == (gparent)->entry
.rbe_left) { tmp = (gparent)->entry.rbe_right; if (tmp &&
(tmp)->entry.rbe_color == 1) { (tmp)->entry.rbe_color =
0; do { (parent)->entry.rbe_color = 0; (gparent)->entry
.rbe_color = 1; } while (0); elm = gparent; continue; } if ((
parent)->entry.rbe_right == elm) { do { (tmp) = (parent)->
entry.rbe_right; if (((parent)->entry.rbe_right = (tmp)->
entry.rbe_left)) { ((tmp)->entry.rbe_left)->entry.rbe_parent
= (parent); } do {} while (0); if (((tmp)->entry.rbe_parent
= (parent)->entry.rbe_parent)) { if ((parent) == ((parent
)->entry.rbe_parent)->entry.rbe_left) ((parent)->entry
.rbe_parent)->entry.rbe_left = (tmp); else ((parent)->entry
.rbe_parent)->entry.rbe_right = (tmp); } else (head)->rbh_root
= (tmp); (tmp)->entry.rbe_left = (parent); (parent)->entry
.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent
)) do {} while (0); } while (0); tmp = parent; parent = elm; elm
= tmp; } do { (parent)->entry.rbe_color = 0; (gparent)->
entry.rbe_color = 1; } while (0); do { (tmp) = (gparent)->
entry.rbe_left; if (((gparent)->entry.rbe_left = (tmp)->
entry.rbe_right)) { ((tmp)->entry.rbe_right)->entry.rbe_parent
= (gparent); } do {} while (0); if (((tmp)->entry.rbe_parent
= (gparent)->entry.rbe_parent)) { if ((gparent) == ((gparent
)->entry.rbe_parent)->entry.rbe_left) ((gparent)->entry
.rbe_parent)->entry.rbe_left = (tmp); else ((gparent)->
entry.rbe_parent)->entry.rbe_right = (tmp); } else (head)->
rbh_root = (tmp); (tmp)->entry.rbe_right = (gparent); (gparent
)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->
entry.rbe_parent)) do {} while (0); } while (0); } else { tmp
= (gparent)->entry.rbe_left; if (tmp && (tmp)->
entry.rbe_color == 1) { (tmp)->entry.rbe_color = 0; do { (
parent)->entry.rbe_color = 0; (gparent)->entry.rbe_color
= 1; } while (0); elm = gparent; continue; } if ((parent)->
entry.rbe_left == elm) { do { (tmp) = (parent)->entry.rbe_left
; if (((parent)->entry.rbe_left = (tmp)->entry.rbe_right
)) { ((tmp)->entry.rbe_right)->entry.rbe_parent = (parent
); } do {} while (0); if (((tmp)->entry.rbe_parent = (parent
)->entry.rbe_parent)) { if ((parent) == ((parent)->entry
.rbe_parent)->entry.rbe_left) ((parent)->entry.rbe_parent
)->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent
)->entry.rbe_right = (tmp); } else (head)->rbh_root = (
tmp); (tmp)->entry.rbe_right = (parent); (parent)->entry
.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent
)) do {} while (0); } while (0); tmp = parent; parent = elm; elm
= tmp; } do { (parent)->entry.rbe_color = 0; (gparent)->
entry.rbe_color = 1; } while (0); do { (tmp) = (gparent)->
entry.rbe_right; if (((gparent)->entry.rbe_right = (tmp)->
entry.rbe_left)) { ((tmp)->entry.rbe_left)->entry.rbe_parent
= (gparent); } do {} while (0); if (((tmp)->entry.rbe_parent
= (gparent)->entry.rbe_parent)) { if ((gparent) == ((gparent
)->entry.rbe_parent)->entry.rbe_left) ((gparent)->entry
.rbe_parent)->entry.rbe_left = (tmp); else ((gparent)->
entry.rbe_parent)->entry.rbe_right = (tmp); } else (head)->
rbh_root = (tmp); (tmp)->entry.rbe_left = (gparent); (gparent
)->entry.rbe_parent = (tmp); do {} while (0); if (((tmp)->
entry.rbe_parent)) do {} while (0); } while (0); } } (head->
rbh_root)->entry.rbe_color = 0; } void got_fileindex_tree_RB_REMOVE_COLOR
(struct got_fileindex_tree *head, struct got_fileindex_entry *
parent, struct got_fileindex_entry *elm) { struct got_fileindex_entry
*tmp; while ((elm == ((void *)0) || (elm)->entry.rbe_color
== 0) && elm != (head)->rbh_root) { if ((parent)->
entry.rbe_left == elm) { tmp = (parent)->entry.rbe_right; if
((tmp)->entry.rbe_color == 1) { do { (tmp)->entry.rbe_color
= 0; (parent)->entry.rbe_color = 1; } while (0); do { (tmp
) = (parent)->entry.rbe_right; if (((parent)->entry.rbe_right
= (tmp)->entry.rbe_left)) { ((tmp)->entry.rbe_left)->
entry.rbe_parent = (parent); } do {} while (0); if (((tmp)->
entry.rbe_parent = (parent)->entry.rbe_parent)) { if ((parent
) == ((parent)->entry.rbe_parent)->entry.rbe_left) ((parent
)->entry.rbe_parent)->entry.rbe_left = (tmp); else ((parent
)->entry.rbe_parent)->entry.rbe_right = (tmp); } else (
head)->rbh_root = (tmp); (tmp)->entry.rbe_left = (parent
); (parent)->entry.rbe_parent = (tmp); do {} while (0); if
(((tmp)->entry.rbe_parent)) do {} while (0); } while (0);
tmp = (parent)->entry.rbe_right; } if (((tmp)->entry.rbe_left
== ((void *)0) || ((tmp)->entry.rbe_left)->entry.rbe_color
== 0) && ((tmp)->entry.rbe_right == ((void *)0) ||
((tmp)->entry.rbe_right)->entry.rbe_color == 0)) { (tmp
)->entry.rbe_color = 1; elm = parent; parent = (elm)->entry
.rbe_parent; } else { if ((tmp)->entry.rbe_right == ((void
*)0) || ((tmp)->entry.rbe_right)->entry.rbe_color == 0
) { struct got_fileindex_entry *oleft; if ((oleft = (tmp)->
entry.rbe_left)) (oleft)->entry.rbe_color = 0; (tmp)->entry
.rbe_color = 1; do { (oleft) = (tmp)->entry.rbe_left; if (
((tmp)->entry.rbe_left = (oleft)->entry.rbe_right)) { (
(oleft)->entry.rbe_right)->entry.rbe_parent = (tmp); } do
{} while (0); if (((oleft)->entry.rbe_parent = (tmp)->
entry.rbe_parent)) { if ((tmp) == ((tmp)->entry.rbe_parent
)->entry.rbe_left) ((tmp)->entry.rbe_parent)->entry.
rbe_left = (oleft); else ((tmp)->entry.rbe_parent)->entry
.rbe_right = (oleft); } else (head)->rbh_root = (oleft); (
oleft)->entry.rbe_right = (tmp); (tmp)->entry.rbe_parent
= (oleft); do {} while (0); if (((oleft)->entry.rbe_parent
)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_right
; } (tmp)->entry.rbe_color = (parent)->entry.rbe_color;
(parent)->entry.rbe_color = 0; if ((tmp)->entry.rbe_right
) ((tmp)->entry.rbe_right)->entry.rbe_color = 0; do { (
tmp) = (parent)->entry.rbe_right; if (((parent)->entry.
rbe_right = (tmp)->entry.rbe_left)) { ((tmp)->entry.rbe_left
)->entry.rbe_parent = (parent); } do {} while (0); if (((tmp
)->entry.rbe_parent = (parent)->entry.rbe_parent)) { if
((parent) == ((parent)->entry.rbe_parent)->entry.rbe_left
) ((parent)->entry.rbe_parent)->entry.rbe_left = (tmp);
else ((parent)->entry.rbe_parent)->entry.rbe_right = (
tmp); } else (head)->rbh_root = (tmp); (tmp)->entry.rbe_left
= (parent); (parent)->entry.rbe_parent = (tmp); do {} while
(0); if (((tmp)->entry.rbe_parent)) do {} while (0); } while
(0); elm = (head)->rbh_root; break; } } else { tmp = (parent
)->entry.rbe_left; if ((tmp)->entry.rbe_color == 1) { do
{ (tmp)->entry.rbe_color = 0; (parent)->entry.rbe_color
= 1; } while (0); do { (tmp) = (parent)->entry.rbe_left; if
(((parent)->entry.rbe_left = (tmp)->entry.rbe_right)) {
((tmp)->entry.rbe_right)->entry.rbe_parent = (parent);
} do {} while (0); if (((tmp)->entry.rbe_parent = (parent
)->entry.rbe_parent)) { if ((parent) == ((parent)->entry
.rbe_parent)->entry.rbe_left) ((parent)->entry.rbe_parent
)->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent
)->entry.rbe_right = (tmp); } else (head)->rbh_root = (
tmp); (tmp)->entry.rbe_right = (parent); (parent)->entry
.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent
)) do {} while (0); } while (0); tmp = (parent)->entry.rbe_left
; } if (((tmp)->entry.rbe_left == ((void *)0) || ((tmp)->
entry.rbe_left)->entry.rbe_color == 0) && ((tmp)->
entry.rbe_right == ((void *)0) || ((tmp)->entry.rbe_right)
->entry.rbe_color == 0)) { (tmp)->entry.rbe_color = 1; elm
= parent; parent = (elm)->entry.rbe_parent; } else { if (
(tmp)->entry.rbe_left == ((void *)0) || ((tmp)->entry.rbe_left
)->entry.rbe_color == 0) { struct got_fileindex_entry *oright
; if ((oright = (tmp)->entry.rbe_right)) (oright)->entry
.rbe_color = 0; (tmp)->entry.rbe_color = 1; do { (oright) =
(tmp)->entry.rbe_right; if (((tmp)->entry.rbe_right = (
oright)->entry.rbe_left)) { ((oright)->entry.rbe_left)->
entry.rbe_parent = (tmp); } do {} while (0); if (((oright)->
entry.rbe_parent = (tmp)->entry.rbe_parent)) { if ((tmp) ==
((tmp)->entry.rbe_parent)->entry.rbe_left) ((tmp)->
entry.rbe_parent)->entry.rbe_left = (oright); else ((tmp)->
entry.rbe_parent)->entry.rbe_right = (oright); } else (head
)->rbh_root = (oright); (oright)->entry.rbe_left = (tmp
); (tmp)->entry.rbe_parent = (oright); do {} while (0); if
(((oright)->entry.rbe_parent)) do {} while (0); } while (
0); tmp = (parent)->entry.rbe_left; } (tmp)->entry.rbe_color
= (parent)->entry.rbe_color; (parent)->entry.rbe_color
= 0; if ((tmp)->entry.rbe_left) ((tmp)->entry.rbe_left
)->entry.rbe_color = 0; do { (tmp) = (parent)->entry.rbe_left
; if (((parent)->entry.rbe_left = (tmp)->entry.rbe_right
)) { ((tmp)->entry.rbe_right)->entry.rbe_parent = (parent
); } do {} while (0); if (((tmp)->entry.rbe_parent = (parent
)->entry.rbe_parent)) { if ((parent) == ((parent)->entry
.rbe_parent)->entry.rbe_left) ((parent)->entry.rbe_parent
)->entry.rbe_left = (tmp); else ((parent)->entry.rbe_parent
)->entry.rbe_right = (tmp); } else (head)->rbh_root = (
tmp); (tmp)->entry.rbe_right = (parent); (parent)->entry
.rbe_parent = (tmp); do {} while (0); if (((tmp)->entry.rbe_parent
)) do {} while (0); } while (0); elm = (head)->rbh_root; break
; } } } if (elm) (elm)->entry.rbe_color = 0; } struct got_fileindex_entry
* got_fileindex_tree_RB_REMOVE(struct got_fileindex_tree *head
, struct got_fileindex_entry *elm) { struct got_fileindex_entry
*child, *parent, *old = elm; int color; if ((elm)->entry.
rbe_left == ((void *)0)) child = (elm)->entry.rbe_right; else
if ((elm)->entry.rbe_right == ((void *)0)) child = (elm)->
entry.rbe_left; else { struct got_fileindex_entry *left; elm =
(elm)->entry.rbe_right; while ((left = (elm)->entry.rbe_left
)) elm = left; child = (elm)->entry.rbe_right; parent = (elm
)->entry.rbe_parent; color = (elm)->entry.rbe_color; if
(child) (child)->entry.rbe_parent = parent; if (parent) {
if ((parent)->entry.rbe_left == elm) (parent)->entry.rbe_left
= child; else (parent)->entry.rbe_right = child; do {} while
(0); } else (head)->rbh_root = child; if ((elm)->entry
.rbe_parent == old) parent = elm; (elm)->entry = (old)->
entry; if ((old)->entry.rbe_parent) { if (((old)->entry
.rbe_parent)->entry.rbe_left == old) ((old)->entry.rbe_parent
)->entry.rbe_left = elm; else ((old)->entry.rbe_parent)
->entry.rbe_right = elm; do {} while (0); } else (head)->
rbh_root = elm; ((old)->entry.rbe_left)->entry.rbe_parent
= elm; if ((old)->entry.rbe_right) ((old)->entry.rbe_right
)->entry.rbe_parent = elm; if (parent) { left = parent; do
{ do {} while (0); } while ((left = (left)->entry.rbe_parent
)); } goto color; } parent = (elm)->entry.rbe_parent; color
= (elm)->entry.rbe_color; if (child) (child)->entry.rbe_parent
= parent; if (parent) { if ((parent)->entry.rbe_left == elm
) (parent)->entry.rbe_left = child; else (parent)->entry
.rbe_right = child; do {} while (0); } else (head)->rbh_root
= child; color: if (color == 0) got_fileindex_tree_RB_REMOVE_COLOR
(head, parent, child); return (old); } struct got_fileindex_entry
* got_fileindex_tree_RB_INSERT(struct got_fileindex_tree *head
, struct got_fileindex_entry *elm) { struct got_fileindex_entry
*tmp; struct got_fileindex_entry *parent = ((void *)0); int comp
= 0; tmp = (head)->rbh_root; while (tmp) { parent = tmp; comp
= (got_fileindex_cmp)(elm, parent); if (comp < 0) tmp = (
tmp)->entry.rbe_left; else if (comp > 0) tmp = (tmp)->
entry.rbe_right; else return (tmp); } do { (elm)->entry.rbe_parent
= parent; (elm)->entry.rbe_left = (elm)->entry.rbe_right
= ((void *)0); (elm)->entry.rbe_color = 1; } while (0); if
(parent != ((void *)0)) { if (comp < 0) (parent)->entry
.rbe_left = elm; else (parent)->entry.rbe_right = elm; do {
} while (0); } else (head)->rbh_root = elm; got_fileindex_tree_RB_INSERT_COLOR
(head, elm); return (((void *)0)); } struct got_fileindex_entry
* got_fileindex_tree_RB_FIND(struct got_fileindex_tree *head
, struct got_fileindex_entry *elm) { struct got_fileindex_entry
*tmp = (head)->rbh_root; int comp; while (tmp) { comp = got_fileindex_cmp
(elm, tmp); if (comp < 0) tmp = (tmp)->entry.rbe_left; else
if (comp > 0) tmp = (tmp)->entry.rbe_right; else return
(tmp); } return (((void *)0)); } struct got_fileindex_entry *
got_fileindex_tree_RB_NFIND(struct got_fileindex_tree *head,
struct got_fileindex_entry *elm) { struct got_fileindex_entry
*tmp = (head)->rbh_root; struct got_fileindex_entry *res =
((void *)0); int comp; while (tmp) { comp = got_fileindex_cmp
(elm, tmp); if (comp < 0) { res = tmp; tmp = (tmp)->entry
.rbe_left; } else if (comp > 0) tmp = (tmp)->entry.rbe_right
; else return (tmp); } return (res); } struct got_fileindex_entry
* got_fileindex_tree_RB_NEXT(struct got_fileindex_entry *elm
) { if ((elm)->entry.rbe_right) { elm = (elm)->entry.rbe_right
; while ((elm)->entry.rbe_left) elm = (elm)->entry.rbe_left
; } else { if ((elm)->entry.rbe_parent && (elm == (
(elm)->entry.rbe_parent)->entry.rbe_left)) elm = (elm)->
entry.rbe_parent; else { while ((elm)->entry.rbe_parent &&
(elm == ((elm)->entry.rbe_parent)->entry.rbe_right)) elm
= (elm)->entry.rbe_parent; elm = (elm)->entry.rbe_parent
; } } return (elm); } struct got_fileindex_entry * got_fileindex_tree_RB_PREV
(struct got_fileindex_entry *elm) { if ((elm)->entry.rbe_left
) { elm = (elm)->entry.rbe_left; while ((elm)->entry.rbe_right
) elm = (elm)->entry.rbe_right; } else { if ((elm)->entry
.rbe_parent && (elm == ((elm)->entry.rbe_parent)->
entry.rbe_right)) elm = (elm)->entry.rbe_parent; else { while
((elm)->entry.rbe_parent && (elm == ((elm)->entry
.rbe_parent)->entry.rbe_left)) elm = (elm)->entry.rbe_parent
; elm = (elm)->entry.rbe_parent; } } return (elm); } struct
got_fileindex_entry * got_fileindex_tree_RB_MINMAX(struct got_fileindex_tree
*head, int val) { struct got_fileindex_entry *tmp = (head)->
rbh_root; struct got_fileindex_entry *parent = ((void *)0); while
(tmp) { parent = tmp; if (val < 0) tmp = (tmp)->entry.
rbe_left; else tmp = (tmp)->entry.rbe_right; } return (parent
); }
;
30
Loop condition is false. Execution continues on line 1181
31
Dereference of null pointer