Commit | Line | Data |
---|---|---|
0756eb3c PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
f9ba5e22 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
0756eb3c PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* Functions in support of the use of maildirsize files for handling quotas in | |
9 | maildir directories. Some of the rules are a bit baroque: | |
10 | ||
11 | http://www.inter7.com/courierimap/README.maildirquota.html | |
12 | ||
13 | We try to follow most of that, except that the directories to skip for quota | |
14 | calculations are not hard wired in, but are supplied as a regex. */ | |
15 | ||
16 | ||
17 | #include "../exim.h" | |
18 | #include "appendfile.h" | |
19 | #include "tf_maildir.h" | |
20 | ||
21 | #define MAX_FILE_SIZE 5120 | |
22 | ||
23 | ||
24 | ||
25 | /************************************************* | |
26 | * Ensure maildir directories exist * | |
27 | *************************************************/ | |
28 | ||
29 | /* This function is called at the start of a maildir delivery, to ensure that | |
d6629cdc PH |
30 | all the relevant directories exist. It also creates a maildirfolder file if the |
31 | base directory matches a given pattern. | |
0756eb3c PH |
32 | |
33 | Argument: | |
34 | path the base directory name | |
35 | addr the address item (for setting an error message) | |
36 | create_directory true if we are allowed to create missing directories | |
37 | dirmode the mode for created directories | |
d6629cdc PH |
38 | maildirfolder_create_regex |
39 | the pattern to match for maildirfolder creation | |
0756eb3c PH |
40 | |
41 | Returns: TRUE on success; FALSE on failure | |
42 | */ | |
43 | ||
44 | BOOL maildir_ensure_directories(uschar *path, address_item *addr, | |
d6629cdc | 45 | BOOL create_directory, int dirmode, uschar *maildirfolder_create_regex) |
0756eb3c PH |
46 | { |
47 | int i; | |
48 | struct stat statbuf; | |
1ba28e2b | 49 | const char *subdirs[] = { "/tmp", "/new", "/cur" }; |
0756eb3c PH |
50 | |
51 | DEBUG(D_transport) | |
52 | debug_printf("ensuring maildir directories exist in %s\n", path); | |
53 | ||
54 | /* First ensure that the path we have is a directory; if it does not exist, | |
55 | create it. Then make sure the tmp, new & cur subdirs of the maildir are | |
d6629cdc | 56 | there. If not, fail. This aborts the delivery (even though the cur subdir is |
0756eb3c PH |
57 | not actually needed for delivery). Handle all 4 directory tests/creates in a |
58 | loop so that code can be shared. */ | |
59 | ||
60 | for (i = 0; i < 4; i++) | |
61 | { | |
62 | int j; | |
1ba28e2b | 63 | const uschar *dir, *mdir; |
0756eb3c PH |
64 | |
65 | if (i == 0) | |
66 | { | |
1ba28e2b | 67 | mdir = CUS""; |
0756eb3c PH |
68 | dir = path; |
69 | } | |
70 | else | |
71 | { | |
1ba28e2b | 72 | mdir = CUS subdirs[i-1]; |
0756eb3c PH |
73 | dir = mdir + 1; |
74 | } | |
75 | ||
76 | /* Check an existing path is a directory. This is inside a loop because | |
77 | there is a potential race condition when creating the directory - some | |
78 | other process may get there first. Give up after trying several times, | |
79 | though. */ | |
80 | ||
81 | for (j = 0; j < 10; j++) | |
82 | { | |
83 | if (Ustat(dir, &statbuf) == 0) | |
84 | { | |
85 | if (S_ISDIR(statbuf.st_mode)) break; /* out of the race loop */ | |
86 | addr->message = string_sprintf("%s%s is not a directory", path, | |
87 | mdir); | |
88 | addr->basic_errno = ERRNO_NOTDIRECTORY; | |
89 | return FALSE; | |
90 | } | |
91 | ||
92 | /* Try to make if non-existent and configured to do so */ | |
93 | ||
94 | if (errno == ENOENT && create_directory) | |
95 | { | |
96 | if (!directory_make(NULL, dir, dirmode, FALSE)) | |
97 | { | |
98 | if (errno == EEXIST) continue; /* repeat the race loop */ | |
99 | addr->message = string_sprintf("cannot create %s%s", path, mdir); | |
100 | addr->basic_errno = errno; | |
101 | return FALSE; | |
102 | } | |
103 | DEBUG(D_transport) | |
104 | debug_printf("created directory %s%s\n", path, mdir); | |
105 | break; /* out of the race loop */ | |
106 | } | |
107 | ||
108 | /* stat() error other than ENOENT, or ENOENT and not creatable */ | |
109 | ||
110 | addr->message = string_sprintf("stat() error for %s%s: %s", path, mdir, | |
111 | strerror(errno)); | |
112 | addr->basic_errno = errno; | |
113 | return FALSE; | |
114 | } | |
115 | ||
116 | /* If we went round the loop 10 times, the directory was flickering in | |
117 | and out of existence like someone in a malfunctioning Star Trek | |
118 | transporter. */ | |
119 | ||
120 | if (j >= 10) | |
121 | { | |
122 | addr->message = string_sprintf("existence of %s%s unclear\n", path, | |
123 | mdir); | |
124 | addr->basic_errno = errno; | |
125 | addr->special_action = SPECIAL_FREEZE; | |
126 | return FALSE; | |
127 | } | |
128 | ||
129 | /* First time through the directories loop, cd to the main directory */ | |
130 | ||
131 | if (i == 0 && Uchdir(path) != 0) | |
132 | { | |
133 | addr->message = string_sprintf ("cannot chdir to %s", path); | |
134 | addr->basic_errno = errno; | |
135 | return FALSE; | |
136 | } | |
137 | } | |
138 | ||
d6629cdc PH |
139 | /* If the basic path matches maildirfolder_create_regex, we are dealing with |
140 | a subfolder, and should ensure that a maildirfolder file exists. */ | |
141 | ||
142 | if (maildirfolder_create_regex != NULL) | |
143 | { | |
144 | const uschar *error; | |
145 | int offset; | |
146 | const pcre *regex; | |
147 | ||
148 | DEBUG(D_transport) debug_printf("checking for maildirfolder requirement\n"); | |
149 | ||
150 | regex = pcre_compile(CS maildirfolder_create_regex, PCRE_COPT, | |
151 | (const char **)&error, &offset, NULL); | |
152 | ||
153 | if (regex == NULL) | |
154 | { | |
155 | addr->message = string_sprintf("appendfile: regular expression " | |
156 | "error: %s at offset %d while compiling %s", error, offset, | |
157 | maildirfolder_create_regex); | |
158 | return FALSE; | |
159 | } | |
160 | ||
161 | if (pcre_exec(regex, NULL, CS path, Ustrlen(path), 0, 0, NULL, 0) >= 0) | |
162 | { | |
163 | uschar *fname = string_sprintf("%s/maildirfolder", path); | |
164 | if (Ustat(fname, &statbuf) == 0) | |
165 | { | |
166 | DEBUG(D_transport) debug_printf("maildirfolder already exists\n"); | |
167 | } | |
168 | else | |
169 | { | |
5f28a6e8 | 170 | int fd = Uopen(fname, O_WRONLY|O_APPEND|O_CREAT, 0600); |
d6629cdc PH |
171 | if (fd < 0) |
172 | { | |
173 | addr->message = string_sprintf("appendfile: failed to create " | |
174 | "maildirfolder file in %s directory: %s", path, strerror(errno)); | |
175 | return FALSE; | |
176 | } | |
177 | (void)close(fd); | |
178 | DEBUG(D_transport) debug_printf("created maildirfolder file\n"); | |
179 | } | |
180 | } | |
181 | else | |
182 | { | |
183 | DEBUG(D_transport) debug_printf("maildirfolder file not required\n"); | |
184 | } | |
185 | } | |
186 | ||
187 | return TRUE; /* Everything exists that should exist */ | |
0756eb3c PH |
188 | } |
189 | ||
190 | ||
191 | ||
192 | ||
193 | /************************************************* | |
194 | * Update maildirsizefile for new file * | |
195 | *************************************************/ | |
196 | ||
197 | /* This function is called to add a new line to the file, recording the length | |
198 | of the newly added message. There isn't much we can do on failure... | |
199 | ||
200 | Arguments: | |
201 | fd the open file descriptor | |
202 | size the size of the message | |
203 | ||
204 | Returns: nothing | |
205 | */ | |
206 | ||
207 | void | |
208 | maildir_record_length(int fd, int size) | |
209 | { | |
210 | int len; | |
211 | uschar buffer[256]; | |
212 | sprintf(CS buffer, "%d 1\n", size); | |
213 | len = Ustrlen(buffer); | |
d315eda1 JH |
214 | if (lseek(fd, 0, SEEK_END) >= 0) |
215 | { | |
216 | len = write(fd, buffer, len); | |
217 | DEBUG(D_transport) | |
218 | debug_printf("added '%.*s' to maildirsize file\n", len-1, buffer); | |
219 | } | |
0756eb3c PH |
220 | } |
221 | ||
222 | ||
223 | ||
224 | /************************************************* | |
225 | * Find the size of a maildir * | |
226 | *************************************************/ | |
227 | ||
228 | /* This function is called when we have to recalculate the size of a maildir by | |
229 | scanning all the files and directories therein. There are rules and conventions | |
230 | about which files or directories are included. We support this by the use of a | |
231 | regex to match directories that are to be included. | |
232 | ||
233 | Maildirs can only be one level deep. However, this function recurses, so it | |
234 | might cope with deeper nestings. We use the existing check_dir_size() function | |
235 | to add up the sizes of the files in a directory that contains messages. | |
236 | ||
237 | The function returns the most recent timestamp encountered. It can also be run | |
238 | in a dummy mode in which it does not scan for sizes, but just returns the | |
239 | timestamp. | |
240 | ||
241 | Arguments: | |
242 | path the path to the maildir | |
243 | filecount where to store the count of messages | |
244 | latest where to store the latest timestamp encountered | |
245 | regex a regex for getting files sizes from file names | |
246 | dir_regex a regex for matching directories to be included | |
247 | timestamp_only don't actually compute any sizes | |
248 | ||
249 | Returns: the sum of the sizes of the messages | |
250 | */ | |
251 | ||
0d7eb84a | 252 | off_t |
0756eb3c PH |
253 | maildir_compute_size(uschar *path, int *filecount, time_t *latest, |
254 | const pcre *regex, const pcre *dir_regex, BOOL timestamp_only) | |
255 | { | |
256 | DIR *dir; | |
0d7eb84a | 257 | off_t sum = 0; |
0756eb3c PH |
258 | struct dirent *ent; |
259 | struct stat statbuf; | |
260 | ||
261 | dir = opendir(CS path); | |
262 | if (dir == NULL) return 0; | |
263 | ||
264 | while ((ent = readdir(dir)) != NULL) | |
265 | { | |
266 | uschar *name = US ent->d_name; | |
267 | uschar buffer[1024]; | |
268 | ||
269 | if (Ustrcmp(name, ".") == 0 || Ustrcmp(name, "..") == 0) continue; | |
270 | ||
271 | /* We are normally supplied with a regex for choosing which directories to | |
272 | scan. We do the regex match first, because that avoids a stat() for names | |
273 | we aren't interested in. */ | |
274 | ||
275 | if (dir_regex != NULL && | |
276 | pcre_exec(dir_regex, NULL, CS name, Ustrlen(name), 0, 0, NULL, 0) < 0) | |
277 | { | |
278 | DEBUG(D_transport) | |
279 | debug_printf("skipping %s/%s: dir_regex does not match\n", path, name); | |
280 | continue; | |
281 | } | |
282 | ||
283 | /* The name is OK; stat it. */ | |
284 | ||
285 | if (!string_format(buffer, sizeof(buffer), "%s/%s", path, name)) | |
286 | { | |
287 | DEBUG(D_transport) | |
288 | debug_printf("maildir_compute_size: name too long: dir=%s name=%s\n", | |
289 | path, name); | |
290 | continue; | |
291 | } | |
292 | ||
293 | if (Ustat(buffer, &statbuf) < 0) | |
294 | { | |
295 | DEBUG(D_transport) | |
296 | debug_printf("maildir_compute_size: stat error %d for %s: %s\n", errno, | |
297 | buffer, strerror(errno)); | |
298 | continue; | |
299 | } | |
300 | ||
301 | if ((statbuf.st_mode & S_IFMT) != S_IFDIR) | |
302 | { | |
303 | DEBUG(D_transport) | |
304 | debug_printf("skipping %s/%s: not a directory\n", path, name); | |
305 | continue; | |
306 | } | |
307 | ||
308 | /* Keep the latest timestamp encountered */ | |
309 | ||
310 | if (statbuf.st_mtime > *latest) *latest = statbuf.st_mtime; | |
311 | ||
312 | /* If this is a maildir folder, call this function recursively. */ | |
313 | ||
314 | if (name[0] == '.') | |
315 | { | |
316 | sum += maildir_compute_size(buffer, filecount, latest, regex, dir_regex, | |
317 | timestamp_only); | |
318 | } | |
319 | ||
320 | /* Otherwise it must be a folder that contains messages (e.g. new or cur), so | |
321 | we need to get its size, unless all we are interested in is the timestamp. */ | |
322 | ||
323 | else if (!timestamp_only) | |
324 | { | |
325 | sum += check_dir_size(buffer, filecount, regex); | |
326 | } | |
327 | } | |
328 | ||
329 | closedir(dir); | |
330 | DEBUG(D_transport) | |
331 | { | |
332 | if (timestamp_only) | |
333 | debug_printf("maildir_compute_size (timestamp_only): %ld\n", | |
334 | (long int) *latest); | |
335 | else | |
b1c749bb PH |
336 | debug_printf("maildir_compute_size: path=%s\n sum=" OFF_T_FMT |
337 | " filecount=%d timestamp=%ld\n", | |
338 | path, sum, *filecount, (long int) *latest); | |
0756eb3c PH |
339 | } |
340 | return sum; | |
341 | } | |
342 | ||
343 | ||
344 | ||
345 | /************************************************* | |
346 | * Create or update maildirsizefile * | |
347 | *************************************************/ | |
348 | ||
349 | /* This function is called before a delivery if the option to use | |
350 | maildirsizefile is enabled. Its function is to create the file if it does not | |
351 | exist, or to update it if that is necessary. | |
352 | ||
353 | The logic in this function follows the rules that are described in | |
354 | ||
355 | http://www.inter7.com/courierimap/README.maildirquota.html | |
356 | ||
357 | Or, at least, it is supposed to! | |
358 | ||
359 | Arguments: | |
360 | path the path to the maildir directory; this is already backed-up | |
4c04137d | 361 | to the parent if the delivery directory is a maildirfolder |
0756eb3c PH |
362 | ob the appendfile options block |
363 | regex a compiled regex for getting a file's size from its name | |
364 | dir_regex a compiled regex for selecting maildir directories | |
365 | returned_size where to return the current size of the maildir, even if | |
366 | the maildirsizefile is removed because of a race | |
367 | ||
368 | Returns: >=0 a file descriptor for an open maildirsize file | |
369 | -1 there was an error opening or accessing the file | |
370 | -2 the file was removed because of a race | |
371 | */ | |
372 | ||
373 | int | |
374 | maildir_ensure_sizefile(uschar *path, appendfile_transport_options_block *ob, | |
0d7eb84a | 375 | const pcre *regex, const pcre *dir_regex, off_t *returned_size, |
0756eb3c PH |
376 | int *returned_filecount) |
377 | { | |
378 | int count, fd; | |
0d7eb84a | 379 | off_t cached_quota = 0; |
0756eb3c | 380 | int cached_quota_filecount = 0; |
0756eb3c PH |
381 | int filecount = 0; |
382 | int linecount = 0; | |
0d7eb84a | 383 | off_t size = 0; |
0756eb3c PH |
384 | uschar *filename; |
385 | uschar buffer[MAX_FILE_SIZE]; | |
386 | uschar *ptr = buffer; | |
387 | uschar *endptr; | |
388 | ||
389 | /* Try a few times to open or create the file, in case another process is doing | |
390 | the same thing. */ | |
391 | ||
392 | filename = string_sprintf("%s/maildirsize", path); | |
393 | ||
394 | DEBUG(D_transport) debug_printf("looking for maildirsize in %s\n", path); | |
dc988b7e | 395 | fd = Uopen(filename, O_RDWR|O_APPEND, ob->mode ? ob->mode : 0600); |
0756eb3c PH |
396 | if (fd < 0) |
397 | { | |
398 | if (errno != ENOENT) return -1; | |
399 | DEBUG(D_transport) | |
400 | debug_printf("%s does not exist: recalculating\n", filename); | |
401 | goto RECALCULATE; | |
402 | } | |
403 | ||
404 | /* The file has been successfully opened. Check that the cached quota value is | |
405 | still correct, and that the size of the file is still small enough. If so, | |
406 | compute the maildir size from the file. */ | |
407 | ||
408 | count = read(fd, buffer, sizeof(buffer)); | |
409 | if (count >= sizeof(buffer)) | |
410 | { | |
411 | DEBUG(D_transport) | |
412 | debug_printf("maildirsize file too big (%d): recalculating\n", count); | |
413 | goto RECALCULATE; | |
414 | } | |
415 | buffer[count] = 0; /* Ensure string terminated */ | |
416 | ||
417 | /* Read the quota parameters from the first line of the data. */ | |
418 | ||
419 | DEBUG(D_transport) | |
420 | debug_printf("reading quota parameters from maildirsize data\n"); | |
421 | ||
422 | for (;;) | |
423 | { | |
0d7eb84a | 424 | off_t n = (off_t)Ustrtod(ptr, &endptr); |
0756eb3c PH |
425 | |
426 | /* Only two data items are currently defined; ignore any others that | |
427 | may be present. The spec is for a number followed by a letter. Anything | |
428 | else we reject and recalculate. */ | |
429 | ||
430 | if (*endptr == 'S') cached_quota = n; | |
0d7eb84a | 431 | else if (*endptr == 'C') cached_quota_filecount = (int)n; |
0756eb3c PH |
432 | if (!isalpha(*endptr++)) |
433 | { | |
434 | DEBUG(D_transport) | |
435 | debug_printf("quota parameter number not followed by letter in " | |
436 | "\"%.*s\": recalculating maildirsize\n", (int)(endptr - buffer), | |
437 | buffer); | |
438 | goto RECALCULATE; | |
439 | } | |
440 | if (*endptr == '\n' || *endptr == 0) break; | |
441 | if (*endptr++ != ',') | |
442 | { | |
443 | DEBUG(D_transport) | |
444 | debug_printf("quota parameter not followed by comma in " | |
445 | "\"%.*s\": recalculating maildirsize\n", (int)(endptr - buffer), | |
446 | buffer); | |
447 | goto RECALCULATE; | |
448 | } | |
449 | ptr = endptr; | |
450 | } | |
451 | ||
452 | /* Check the cached values against the current settings */ | |
453 | ||
454 | if (cached_quota != ob->quota_value || | |
455 | cached_quota_filecount != ob->quota_filecount_value) | |
456 | { | |
457 | DEBUG(D_transport) | |
458 | debug_printf("cached quota is out of date: recalculating\n" | |
b1c749bb PH |
459 | " quota=" OFF_T_FMT " cached_quota=" OFF_T_FMT " filecount_quota=%d " |
460 | "cached_quota_filecount=%d\n", ob->quota_value, | |
461 | cached_quota, ob->quota_filecount_value, cached_quota_filecount); | |
0756eb3c PH |
462 | goto RECALCULATE; |
463 | } | |
464 | ||
465 | /* Quota values agree; parse the rest of the data to get the sizes. At this | |
466 | stage, *endptr points either to 0 or to '\n'. */ | |
467 | ||
468 | DEBUG(D_transport) | |
469 | debug_printf("computing maildir size from maildirsize data\n"); | |
470 | ||
471 | while (*endptr++ == '\n') | |
472 | { | |
473 | if (*endptr == 0) break; | |
474 | linecount++; | |
475 | ptr = endptr; | |
0d7eb84a | 476 | size += (off_t)Ustrtod(ptr, &endptr); |
0756eb3c PH |
477 | if (*endptr != ' ') break; |
478 | ptr = endptr + 1; | |
479 | filecount += Ustrtol(ptr, &endptr, 10); | |
480 | } | |
481 | ||
482 | /* If *endptr is zero, we have successfully parsed the file, and we now have | |
483 | the size of the mailbox as cached in the file. The "rules" say that if this | |
484 | value indicates that the mailbox is over quota, we must recalculate if there is | |
62c0818f PH |
485 | more than one entry in the file, or if the file is older than 15 minutes. Also, |
486 | just in case there are weird values in the file, recalculate if either of the | |
487 | values is negative. */ | |
0756eb3c PH |
488 | |
489 | if (*endptr == 0) | |
490 | { | |
8e669ac1 | 491 | if (size < 0 || filecount < 0) |
62c0818f PH |
492 | { |
493 | DEBUG(D_transport) debug_printf("negative value in maildirsize " | |
b1c749bb | 494 | "(size=" OFF_T_FMT " count=%d): recalculating\n", size, filecount); |
8e669ac1 PH |
495 | goto RECALCULATE; |
496 | } | |
497 | ||
0756eb3c PH |
498 | if (ob->quota_value > 0 && |
499 | (size + (ob->quota_is_inclusive? message_size : 0) > ob->quota_value || | |
500 | (ob->quota_filecount_value > 0 && | |
501 | filecount + (ob->quota_is_inclusive ? 1:0) > | |
502 | ob->quota_filecount_value) | |
503 | )) | |
504 | { | |
505 | struct stat statbuf; | |
506 | if (linecount > 1) | |
507 | { | |
62c0818f | 508 | DEBUG(D_transport) debug_printf("over quota and maildirsize has " |
0756eb3c PH |
509 | "more than 1 entry: recalculating\n"); |
510 | goto RECALCULATE; | |
511 | } | |
512 | ||
513 | if (fstat(fd, &statbuf) < 0) goto RECALCULATE; /* Should never occur */ | |
514 | ||
515 | if (time(NULL) - statbuf.st_mtime > 15*60) | |
516 | { | |
517 | DEBUG(D_transport) debug_printf("over quota and maildirsize is older " | |
518 | "than 15 minutes: recalculating\n"); | |
519 | goto RECALCULATE; | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
524 | ||
525 | /* If *endptr is not zero, there was a syntax error in the file. */ | |
526 | ||
527 | else | |
528 | { | |
529 | int len; | |
530 | time_t old_latest, new_latest; | |
531 | uschar *tempname; | |
532 | struct timeval tv; | |
533 | ||
534 | DEBUG(D_transport) | |
535 | { | |
536 | uschar *p = endptr; | |
537 | while (p > buffer && p[-1] != '\n') p--; | |
538 | endptr[1] = 0; | |
539 | ||
540 | debug_printf("error in maildirsizefile: unexpected character %d in " | |
541 | "line %d (starting '%s'): recalculating\n", | |
542 | *endptr, linecount + 1, string_printing(p)); | |
543 | } | |
544 | ||
545 | /* Either there is no file, or the quota value has changed, or the file has | |
546 | got too big, or there was some format error in the file. Recalculate the size | |
547 | and write new contents to a temporary file; then rename it. After any | |
548 | error, just return -1 as the file descriptor. */ | |
549 | ||
550 | RECALCULATE: | |
551 | ||
f1e894f3 | 552 | if (fd >= 0) (void)close(fd); |
0756eb3c PH |
553 | old_latest = 0; |
554 | filecount = 0; | |
555 | size = maildir_compute_size(path, &filecount, &old_latest, regex, dir_regex, | |
556 | FALSE); | |
557 | ||
558 | (void)gettimeofday(&tv, NULL); | |
d0291a0a JH |
559 | tempname = string_sprintf("%s/tmp/" TIME_T_FMT ".H%luP%lu.%s", |
560 | path, tv.tv_sec, tv.tv_usec, (long unsigned) getpid(), primary_hostname); | |
0756eb3c | 561 | |
1da77999 | 562 | fd = Uopen(tempname, O_RDWR|O_CREAT|O_EXCL, ob->mode ? ob->mode : 0600); |
0756eb3c PH |
563 | if (fd >= 0) |
564 | { | |
b1c749bb PH |
565 | (void)sprintf(CS buffer, OFF_T_FMT "S,%dC\n" OFF_T_FMT " %d\n", |
566 | ob->quota_value, ob->quota_filecount_value, size, filecount); | |
0756eb3c PH |
567 | len = Ustrlen(buffer); |
568 | if (write(fd, buffer, len) != len || Urename(tempname, filename) < 0) | |
569 | { | |
f1e894f3 | 570 | (void)close(fd); |
0756eb3c PH |
571 | fd = -1; |
572 | } | |
573 | } | |
574 | ||
575 | /* If any of the directories have been modified since the last timestamp we | |
576 | saw, we have to junk this maildirsize file. */ | |
577 | ||
578 | DEBUG(D_transport) debug_printf("checking subdirectory timestamps\n"); | |
579 | new_latest = 0; | |
580 | (void)maildir_compute_size(path, NULL, &new_latest , NULL, dir_regex, TRUE); | |
581 | if (new_latest > old_latest) | |
582 | { | |
583 | DEBUG(D_transport) debug_printf("abandoning maildirsize because of " | |
584 | "a later subdirectory modification\n"); | |
585 | (void)Uunlink(filename); | |
f1e894f3 | 586 | (void)close(fd); |
660242ad | 587 | fd = -2; |
0756eb3c PH |
588 | } |
589 | } | |
590 | ||
591 | /* Return the sizes and the file descriptor, if any */ | |
592 | ||
b1c749bb PH |
593 | DEBUG(D_transport) debug_printf("returning maildir size=" OFF_T_FMT |
594 | " filecount=%d\n", size, filecount); | |
0756eb3c PH |
595 | *returned_size = size; |
596 | *returned_filecount = filecount; | |
597 | return fd; | |
598 | } | |
599 | ||
600 | /* End of tf_maildir.c */ |