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0f41c26f | 1 | ;;; GNU Guix --- Functional package management for GNU |
7df3ab0f | 2 | ;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org> |
0f41c26f LC |
3 | ;;; |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (guix serialization) | |
958dd3ce | 20 | #:use-module (guix combinators) |
0f41c26f | 21 | #:use-module (rnrs bytevectors) |
0f41c26f LC |
22 | #:use-module (srfi srfi-1) |
23 | #:use-module (srfi srfi-26) | |
0363991a LC |
24 | #:use-module (srfi srfi-34) |
25 | #:use-module (srfi srfi-35) | |
2535635f LC |
26 | #:use-module (ice-9 binary-ports) |
27 | #:use-module ((ice-9 rdelim) #:prefix rdelim:) | |
6c20d1d0 | 28 | #:use-module (ice-9 match) |
0363991a | 29 | #:use-module (ice-9 ftw) |
01e5d63c | 30 | #:use-module (system foreign) |
0f41c26f LC |
31 | #:export (write-int read-int |
32 | write-long-long read-long-long | |
33 | write-padding | |
0d268c5d | 34 | write-bytevector write-string |
ce72c780 | 35 | read-string read-latin1-string read-maybe-utf8-string |
0f41c26f | 36 | write-string-list read-string-list |
7df3ab0f | 37 | write-string-pairs read-string-pairs |
0f41c26f | 38 | write-store-path read-store-path |
0363991a | 39 | write-store-path-list read-store-path-list |
0aa6b386 | 40 | (dump . dump-port*) |
0363991a LC |
41 | |
42 | &nar-error | |
43 | nar-error? | |
44 | nar-error-port | |
45 | nar-error-file | |
46 | ||
47 | &nar-read-error | |
48 | nar-read-error? | |
49 | nar-read-error-token | |
50 | ||
51 | write-file | |
b94b698d | 52 | write-file-tree |
12c1afcd | 53 | fold-archive |
c7c7f068 LC |
54 | restore-file |
55 | dump-file)) | |
0f41c26f LC |
56 | |
57 | ;;; Comment: | |
58 | ;;; | |
59 | ;;; Serialization procedures used by the RPCs and the Nar format. This module | |
60 | ;;; is for internal consumption. | |
61 | ;;; | |
62 | ;;; Code: | |
63 | ||
64 | ;; Similar to serialize.cc in Nix. | |
65 | ||
f9e8a123 | 66 | (define-condition-type &nar-error &error ; XXX: inherit from &store-error ? |
46b8aadb LC |
67 | nar-error? |
68 | (file nar-error-file) ; file we were restoring, or #f | |
69 | (port nar-error-port)) ; port from which we read | |
70 | ||
71 | (define currently-restored-file | |
72 | ;; Name of the file being restored. Used internally for error reporting. | |
73 | (make-parameter #f)) | |
74 | ||
75 | ||
76 | (define (get-bytevector-n* port count) | |
77 | (let ((bv (get-bytevector-n port count))) | |
78 | (when (or (eof-object? bv) | |
79 | (< (bytevector-length bv) count)) | |
80 | (raise (condition (&nar-error | |
81 | (file (currently-restored-file)) | |
82 | (port port))))) | |
83 | bv)) | |
84 | ||
01e5d63c LC |
85 | (define (sub-bytevector bv len) |
86 | "Return a bytevector that aliases the first LEN bytes of BV." | |
87 | (define max (bytevector-length bv)) | |
88 | (cond ((= len max) bv) | |
89 | ((< len max) | |
90 | ;; Yes, this is safe because the result of each conversion procedure | |
91 | ;; has its life cycle synchronized with that of its argument. | |
92 | (pointer->bytevector (bytevector->pointer bv) len)) | |
93 | (else | |
94 | (error "sub-bytevector called to get a super bytevector")))) | |
95 | ||
0f41c26f LC |
96 | (define (write-int n p) |
97 | (let ((b (make-bytevector 8 0))) | |
98 | (bytevector-u32-set! b 0 n (endianness little)) | |
99 | (put-bytevector p b))) | |
100 | ||
101 | (define (read-int p) | |
46b8aadb | 102 | (let ((b (get-bytevector-n* p 8))) |
0f41c26f LC |
103 | (bytevector-u32-ref b 0 (endianness little)))) |
104 | ||
105 | (define (write-long-long n p) | |
106 | (let ((b (make-bytevector 8 0))) | |
107 | (bytevector-u64-set! b 0 n (endianness little)) | |
108 | (put-bytevector p b))) | |
109 | ||
110 | (define (read-long-long p) | |
46b8aadb | 111 | (let ((b (get-bytevector-n* p 8))) |
0f41c26f LC |
112 | (bytevector-u64-ref b 0 (endianness little)))) |
113 | ||
114 | (define write-padding | |
115 | (let ((zero (make-bytevector 8 0))) | |
116 | (lambda (n p) | |
117 | (let ((m (modulo n 8))) | |
118 | (or (zero? m) | |
119 | (put-bytevector p zero 0 (- 8 m))))))) | |
120 | ||
39d1e965 LC |
121 | (define* (write-bytevector s p |
122 | #:optional (l (bytevector-length s))) | |
123 | (let* ((m (modulo l 8)) | |
0f41c26f LC |
124 | (b (make-bytevector (+ 8 l (if (zero? m) 0 (- 8 m)))))) |
125 | (bytevector-u32-set! b 0 l (endianness little)) | |
126 | (bytevector-copy! s 0 b 8 l) | |
127 | (put-bytevector p b))) | |
128 | ||
0d268c5d LC |
129 | (define (write-string s p) |
130 | (write-bytevector (string->utf8 s) p)) | |
131 | ||
472e4c43 | 132 | (define (read-byte-string p) |
0f41c26f LC |
133 | (let* ((len (read-int p)) |
134 | (m (modulo len 8)) | |
01e5d63c LC |
135 | (pad (if (zero? m) 0 (- 8 m))) |
136 | (bv (get-bytevector-n* p (+ len pad)))) | |
137 | (sub-bytevector bv len))) | |
0f41c26f | 138 | |
472e4c43 LC |
139 | (define (read-string p) |
140 | (utf8->string (read-byte-string p))) | |
aa27b560 | 141 | |
472e4c43 LC |
142 | (define (read-latin1-string p) |
143 | "Read an ISO-8859-1 string from P." | |
144 | ;; Note: do not use 'get-string-n' to work around Guile bug | |
145 | ;; <http://bugs.gnu.org/19621>. See <http://bugs.gnu.org/19610> for | |
146 | ;; a discussion. | |
147 | (let ((bv (read-byte-string p))) | |
36626c55 | 148 | ;; XXX: Rewrite using (ice-9 iconv). |
472e4c43 | 149 | (list->string (map integer->char (bytevector->u8-list bv))))) |
0f41c26f | 150 | |
ce72c780 LC |
151 | (define (read-maybe-utf8-string p) |
152 | "Read a serialized string from port P. Attempt to decode it as UTF-8 and | |
153 | substitute invalid byte sequences with question marks. This is a | |
154 | \"permissive\" UTF-8 decoder." | |
155 | ;; XXX: We rely on the port's decoding mechanism to do permissive decoding | |
156 | ;; and substitute invalid byte sequences with question marks, but this is | |
157 | ;; not very efficient. Eventually Guile may provide a lightweight | |
158 | ;; permissive UTF-8 decoder. | |
159 | (let* ((bv (read-byte-string p)) | |
bc7d089a LC |
160 | (port (open-bytevector-input-port bv))) |
161 | (set-port-encoding! port "UTF-8") | |
162 | (set-port-conversion-strategy! port 'substitute) | |
2535635f | 163 | (rdelim:read-string port))) |
ce72c780 | 164 | |
0f41c26f LC |
165 | (define (write-string-list l p) |
166 | (write-int (length l) p) | |
167 | (for-each (cut write-string <> p) l)) | |
168 | ||
7df3ab0f LC |
169 | (define (read-string-list p) |
170 | (let ((len (read-int p))) | |
171 | (unfold (cut >= <> len) | |
172 | (lambda (i) | |
173 | (read-string p)) | |
174 | 1+ | |
175 | 0))) | |
176 | ||
6c20d1d0 LC |
177 | (define (write-string-pairs l p) |
178 | (write-int (length l) p) | |
179 | (for-each (match-lambda | |
180 | ((first . second) | |
181 | (write-string first p) | |
182 | (write-string second p))) | |
183 | l)) | |
184 | ||
7df3ab0f | 185 | (define (read-string-pairs p) |
0f41c26f LC |
186 | (let ((len (read-int p))) |
187 | (unfold (cut >= <> len) | |
188 | (lambda (i) | |
7df3ab0f | 189 | (cons (read-string p) (read-string p))) |
0f41c26f LC |
190 | 1+ |
191 | 0))) | |
192 | ||
193 | (define (write-store-path f p) | |
194 | (write-string f p)) ; TODO: assert path | |
195 | ||
196 | (define (read-store-path p) | |
197 | (read-string p)) ; TODO: assert path | |
198 | ||
199 | (define write-store-path-list write-string-list) | |
200 | (define read-store-path-list read-string-list) | |
201 | ||
f293705d LC |
202 | (define-syntax write-literal-strings |
203 | (lambda (s) | |
204 | "Write the given literal strings to PORT in an optimized fashion, without | |
205 | any run-time allocations or computations." | |
206 | (define (padding len) | |
207 | (let ((m (modulo len 8))) | |
208 | (if (zero? m) | |
209 | 0 | |
210 | (- 8 m)))) | |
211 | ||
212 | (syntax-case s () | |
213 | ((_ port strings ...) | |
214 | (let* ((bytes (map string->utf8 (syntax->datum #'(strings ...)))) | |
215 | (len (fold (lambda (bv size) | |
216 | (+ size 8 (bytevector-length bv) | |
217 | (padding (bytevector-length bv)))) | |
218 | 0 | |
219 | bytes)) | |
220 | (bv (make-bytevector len)) | |
221 | (zeros (make-bytevector 8 0))) | |
222 | (fold (lambda (str offset) | |
223 | (let ((len (bytevector-length str))) | |
224 | (bytevector-u32-set! bv offset len (endianness little)) | |
225 | (bytevector-copy! str 0 bv (+ 8 offset) len) | |
226 | (bytevector-copy! zeros 0 bv (+ 8 offset len) | |
227 | (padding len)) | |
228 | (+ offset 8 len (padding len)))) | |
229 | 0 | |
230 | bytes) | |
231 | #`(put-bytevector port #,bv)))))) | |
232 | ||
0363991a | 233 | \f |
0363991a LC |
234 | (define-condition-type &nar-read-error &nar-error |
235 | nar-read-error? | |
236 | (token nar-read-error-token)) ; faulty token, or #f | |
237 | ||
238 | ||
239 | (define (dump in out size) | |
240 | "Copy SIZE bytes from IN to OUT." | |
241 | (define buf-size 65536) | |
242 | (define buf (make-bytevector buf-size)) | |
243 | ||
244 | (let loop ((left size)) | |
245 | (if (<= left 0) | |
246 | 0 | |
247 | (let ((read (get-bytevector-n! in buf 0 (min left buf-size)))) | |
248 | (if (eof-object? read) | |
249 | left | |
250 | (begin | |
251 | (put-bytevector out buf 0 read) | |
252 | (loop (- left read)))))))) | |
253 | ||
b94b698d LC |
254 | (define (write-contents-from-port input output size) |
255 | "Write SIZE bytes from port INPUT to port OUTPUT." | |
256 | (write-string "contents" output) | |
257 | (write-long-long size output) | |
258 | ;; Use 'sendfile' when both OUTPUT and INPUT are file ports. | |
259 | (if (and (file-port? output) (file-port? input)) | |
260 | (sendfile output input size 0) | |
261 | (dump input output size)) | |
262 | (write-padding size output)) | |
0363991a | 263 | |
12c1afcd LC |
264 | (define (read-file-type port) |
265 | "Read the file type tag from PORT, and return either 'regular or | |
266 | 'executable." | |
267 | (match (read-string port) | |
268 | ("contents" | |
269 | 'regular) | |
270 | ("executable" | |
271 | (match (list (read-string port) (read-string port)) | |
272 | (("" "contents") 'executable) | |
273 | (x (raise | |
274 | (condition (&message | |
275 | (message "unexpected executable file marker")) | |
276 | (&nar-read-error (port port) | |
277 | (file #f) | |
278 | (token x))))))) | |
279 | (x | |
280 | (raise | |
281 | (condition (&message (message "unsupported nar file type")) | |
282 | (&nar-read-error (port port) (file #f) (token x))))))) | |
0363991a LC |
283 | |
284 | (define %archive-version-1 | |
285 | ;; Magic cookie for Nix archives. | |
286 | "nix-archive-1") | |
287 | ||
fe585be9 LC |
288 | (define* (write-file file port |
289 | #:key (select? (const #t))) | |
0363991a | 290 | "Write the contents of FILE to PORT in Nar format, recursing into |
fe585be9 LC |
291 | sub-directories of FILE as needed. For each directory entry, call (SELECT? |
292 | FILE STAT), where FILE is the entry's absolute file name and STAT is the | |
293 | result of 'lstat'; exclude entries for which SELECT? does not return true." | |
b94b698d LC |
294 | (write-file-tree file port |
295 | #:file-type+size | |
296 | (lambda (file) | |
297 | (let* ((stat (lstat file)) | |
298 | (size (stat:size stat))) | |
299 | (case (stat:type stat) | |
300 | ((directory) | |
301 | (values 'directory size)) | |
302 | ((regular) | |
303 | (values (if (zero? (logand (stat:mode stat) | |
304 | #o100)) | |
305 | 'regular | |
306 | 'executable) | |
307 | size)) | |
308 | (else | |
309 | (values (stat:type stat) size))))) ;bah! | |
310 | #:file-port (cut open-file <> "r0b") | |
311 | #:symlink-target readlink | |
312 | ||
313 | #:directory-entries | |
314 | (lambda (directory) | |
315 | ;; 'scandir' defaults to 'string-locale<?' to sort files, | |
316 | ;; but this happens to be case-insensitive (at least in | |
317 | ;; 'en_US' locale on libc 2.18.) Conversely, we want | |
318 | ;; files to be sorted in a case-sensitive fashion. | |
319 | (define basenames | |
320 | (scandir directory (negate (cut member <> '("." ".."))) | |
321 | string<?)) | |
322 | ||
323 | (filter-map (lambda (base) | |
324 | (let ((file (string-append directory | |
325 | "/" base))) | |
c122a2e5 | 326 | (and (select? file (lstat file)) |
b94b698d LC |
327 | base))) |
328 | basenames)) | |
329 | ||
330 | ;; The 'scandir' call above gives us filtered and sorted | |
331 | ;; entries, so no post-processing is needed. | |
332 | #:postprocess-entries identity)) | |
333 | ||
334 | (define (filter/sort-directory-entries lst) | |
335 | "Remove dot and dot-dot entries from LST, and sort it in lexicographical | |
336 | order." | |
337 | (delete-duplicates | |
338 | (sort (remove (cute member <> '("." "..")) lst) | |
339 | string<?) | |
340 | string=?)) | |
341 | ||
342 | (define* (write-file-tree file port | |
343 | #:key | |
344 | file-type+size | |
345 | file-port | |
346 | symlink-target | |
347 | directory-entries | |
348 | (postprocess-entries filter/sort-directory-entries)) | |
349 | "Write the contents of FILE to PORT in Nar format, recursing into | |
350 | sub-directories of FILE as needed. | |
351 | ||
352 | This procedure does not make any file-system I/O calls. Instead, it calls the | |
353 | user-provided FILE-TYPE+SIZE, FILE-PORT, SYMLINK-TARGET, and DIRECTORY-ENTRIES | |
354 | procedures, which roughly correspond to 'lstat', 'readlink', and 'scandir'. | |
355 | POSTPROCESS-ENTRIES ensures that directory entries are valid; leave it as-is | |
356 | unless you know that DIRECTORY-ENTRIES provide filtered and sorted entries, in | |
357 | which case you can use 'identity'." | |
0363991a LC |
358 | (define p port) |
359 | ||
360 | (write-string %archive-version-1 p) | |
361 | ||
b94b698d LC |
362 | (let dump ((f file)) |
363 | (define-values (type size) | |
364 | (file-type+size f)) | |
365 | ||
f293705d | 366 | (write-literal-strings p "(") |
b94b698d LC |
367 | (case type |
368 | ((regular executable) | |
f293705d | 369 | (write-literal-strings p "type" "regular") |
b94b698d | 370 | (when (eq? 'executable type) |
f293705d | 371 | (write-literal-strings p "executable" "")) |
b94b698d LC |
372 | (let ((input (file-port f))) |
373 | (dynamic-wind | |
374 | (const #t) | |
375 | (lambda () | |
376 | (write-contents-from-port input p size)) | |
377 | (lambda () | |
378 | (close-port input))))) | |
fe585be9 | 379 | ((directory) |
f293705d | 380 | (write-literal-strings p "type" "directory") |
b94b698d | 381 | (let ((entries (postprocess-entries (directory-entries f)))) |
fe585be9 | 382 | (for-each (lambda (e) |
b94b698d | 383 | (let* ((f (string-append f "/" e))) |
f293705d | 384 | (write-literal-strings p "entry" "(" "name") |
b94b698d | 385 | (write-string e p) |
f293705d | 386 | (write-literal-strings p "node") |
b94b698d | 387 | (dump f) |
f293705d | 388 | (write-literal-strings p ")"))) |
fe585be9 LC |
389 | entries))) |
390 | ((symlink) | |
f293705d | 391 | (write-literal-strings p "type" "symlink" "target") |
b94b698d | 392 | (write-string (symlink-target f) p)) |
fe585be9 LC |
393 | (else |
394 | (raise (condition (&message (message "unsupported file type")) | |
395 | (&nar-error (file f) (port port)))))) | |
f293705d | 396 | (write-literal-strings p ")"))) |
0363991a | 397 | |
9fe3f113 LC |
398 | (define port-conversion-strategy |
399 | (fluid->parameter %default-port-conversion-strategy)) | |
400 | ||
12c1afcd LC |
401 | (define (fold-archive proc seed port file) |
402 | "Read a file (possibly a directory structure) in Nar format from PORT. Call | |
403 | PROC on each file or directory read from PORT using: | |
404 | ||
405 | (PROC FILE TYPE CONTENTS RESULT) | |
406 | ||
407 | using SEED as the first RESULT. TYPE is a symbol like 'regular, and CONTENTS | |
408 | depends on TYPE." | |
9fe3f113 LC |
409 | (parameterize ((currently-restored-file file) |
410 | ||
411 | ;; Error out if we can convert file names to the current | |
412 | ;; locale. (XXX: We'd prefer UTF-8 encoding for file names | |
413 | ;; regardless of the locale, but that's what Guile gives us | |
414 | ;; so far.) | |
415 | (port-conversion-strategy 'error)) | |
46b8aadb LC |
416 | (let ((signature (read-string port))) |
417 | (unless (equal? signature %archive-version-1) | |
418 | (raise | |
419 | (condition (&message (message "invalid nar signature")) | |
420 | (&nar-read-error (port port) | |
421 | (token signature) | |
422 | (file #f)))))) | |
423 | ||
12c1afcd LC |
424 | (let read ((file file) |
425 | (result seed)) | |
46b8aadb LC |
426 | (define (read-eof-marker) |
427 | (match (read-string port) | |
428 | (")" #t) | |
429 | (x (raise | |
430 | (condition | |
431 | (&message (message "invalid nar end-of-file marker")) | |
432 | (&nar-read-error (port port) (file file) (token x))))))) | |
433 | ||
434 | (currently-restored-file file) | |
435 | ||
436 | (match (list (read-string port) (read-string port) (read-string port)) | |
437 | (("(" "type" "regular") | |
12c1afcd LC |
438 | (let* ((type (read-file-type port)) |
439 | (size (read-long-long port)) | |
440 | ||
441 | ;; The caller must read exactly SIZE bytes from PORT. | |
442 | (result (proc file type `(,port . ,size) result))) | |
443 | (let ((m (modulo size 8))) | |
444 | (unless (zero? m) | |
445 | (get-bytevector-n* port (- 8 m)))) | |
446 | (read-eof-marker) | |
447 | result)) | |
46b8aadb LC |
448 | (("(" "type" "symlink") |
449 | (match (list (read-string port) (read-string port)) | |
450 | (("target" target) | |
12c1afcd LC |
451 | (let ((result (proc file 'symlink target result))) |
452 | (read-eof-marker) | |
453 | result)) | |
46b8aadb | 454 | (x (raise |
0363991a | 455 | (condition |
46b8aadb LC |
456 | (&message (message "invalid symlink tokens")) |
457 | (&nar-read-error (port port) (file file) (token x))))))) | |
458 | (("(" "type" "directory") | |
459 | (let ((dir file)) | |
12c1afcd LC |
460 | (let loop ((prefix (read-string port)) |
461 | (result (proc file 'directory #f result))) | |
46b8aadb LC |
462 | (match prefix |
463 | ("entry" | |
464 | (match (list (read-string port) | |
465 | (read-string port) (read-string port) | |
466 | (read-string port)) | |
467 | (("(" "name" file "node") | |
12c1afcd LC |
468 | (let ((result (read (string-append dir "/" file) result))) |
469 | (match (read-string port) | |
470 | (")" #f) | |
471 | (x | |
472 | (raise | |
473 | (condition | |
474 | (&message | |
475 | (message "unexpected directory entry termination")) | |
476 | (&nar-read-error (port port) | |
477 | (file file) | |
478 | (token x)))))) | |
479 | (loop (read-string port) result))))) | |
465d2cb2 LC |
480 | (")" ;done with DIR |
481 | (proc file 'directory-complete #f result)) | |
46b8aadb LC |
482 | (x |
483 | (raise | |
484 | (condition | |
485 | (&message (message "unexpected directory inter-entry marker")) | |
486 | (&nar-read-error (port port) (file file) (token x))))))))) | |
487 | (x | |
488 | (raise | |
489 | (condition | |
490 | (&message (message "unsupported nar entry type")) | |
491 | (&nar-read-error (port port) (file file) (token x))))))))) | |
0363991a | 492 | |
2718c29c | 493 | (define (dump-file file input size type) |
c7c7f068 LC |
494 | "Dump SIZE bytes from INPUT to FILE. |
495 | ||
496 | This procedure is suitable for use as the #:dump-file argument to | |
497 | 'restore-file'." | |
2718c29c LC |
498 | (call-with-output-file file |
499 | (lambda (output) | |
500 | (dump input output size)))) | |
501 | ||
502 | (define* (restore-file port file | |
503 | #:key (dump-file dump-file)) | |
12c1afcd | 504 | "Read a file (possibly a directory structure) in Nar format from PORT. |
2718c29c LC |
505 | Restore it as FILE with canonical permissions and timestamps. To write a |
506 | regular or executable file, call: | |
507 | ||
508 | (DUMP-FILE FILE INPUT SIZE TYPE) | |
509 | ||
510 | The default is to dump SIZE bytes from INPUT to FILE, but callers can provide | |
511 | a custom procedure, for instance to deduplicate FILE on the fly." | |
12c1afcd LC |
512 | (fold-archive (lambda (file type content result) |
513 | (match type | |
514 | ('directory | |
515 | (mkdir file)) | |
465d2cb2 | 516 | ('directory-complete |
ed7d02f7 LC |
517 | (chmod file #o555) |
518 | (utime file 1 1 0 0)) | |
12c1afcd | 519 | ('symlink |
ed7d02f7 LC |
520 | (symlink content file) |
521 | (utime file 1 1 0 0 AT_SYMLINK_NOFOLLOW)) | |
12c1afcd LC |
522 | ((or 'regular 'executable) |
523 | (match content | |
524 | ((input . size) | |
2718c29c LC |
525 | (dump-file file input size type) |
526 | (chmod file (if (eq? type 'executable) | |
527 | #o555 | |
528 | #o444)) | |
ed7d02f7 | 529 | (utime file 1 1 0 0)))))) |
12c1afcd LC |
530 | #t |
531 | port | |
532 | file)) | |
533 | ||
b94b698d LC |
534 | ;;; Local Variables: |
535 | ;;; eval: (put 'call-with-binary-input-file 'scheme-indent-function 1) | |
536 | ;;; End: | |
537 | ||
0f41c26f | 538 | ;;; serialization.scm ends here |