2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2011-2012 Michihiro NAKAJIMA
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include "archive_platform.h"
28 __FBSDID("$FreeBSD$");
43 #include "archive_entry.h"
44 #include "archive_entry_locale.h"
45 #include "archive_private.h"
46 #include "archive_write_private.h"
49 uint64_t entry_bytes_remaining;
50 uint64_t entry_padding;
52 struct archive_string_conv *opt_sconv;
53 struct archive_string_conv *sconv_default;
54 int init_default_conversion;
58 * Define structure of POSIX 'ustar' tar header.
60 #define USTAR_name_offset 0
61 #define USTAR_name_size 100
62 #define USTAR_mode_offset 100
63 #define USTAR_mode_size 6
64 #define USTAR_mode_max_size 8
65 #define USTAR_uid_offset 108
66 #define USTAR_uid_size 6
67 #define USTAR_uid_max_size 8
68 #define USTAR_gid_offset 116
69 #define USTAR_gid_size 6
70 #define USTAR_gid_max_size 8
71 #define USTAR_size_offset 124
72 #define USTAR_size_size 11
73 #define USTAR_size_max_size 12
74 #define USTAR_mtime_offset 136
75 #define USTAR_mtime_size 11
76 #define USTAR_mtime_max_size 11
77 #define USTAR_checksum_offset 148
78 #define USTAR_checksum_size 8
79 #define USTAR_typeflag_offset 156
80 #define USTAR_typeflag_size 1
81 #define USTAR_linkname_offset 157
82 #define USTAR_linkname_size 100
83 #define USTAR_magic_offset 257
84 #define USTAR_magic_size 6
85 #define USTAR_version_offset 263
86 #define USTAR_version_size 2
87 #define USTAR_uname_offset 265
88 #define USTAR_uname_size 32
89 #define USTAR_gname_offset 297
90 #define USTAR_gname_size 32
91 #define USTAR_rdevmajor_offset 329
92 #define USTAR_rdevmajor_size 6
93 #define USTAR_rdevmajor_max_size 8
94 #define USTAR_rdevminor_offset 337
95 #define USTAR_rdevminor_size 6
96 #define USTAR_rdevminor_max_size 8
97 #define USTAR_prefix_offset 345
98 #define USTAR_prefix_size 155
99 #define USTAR_padding_offset 500
100 #define USTAR_padding_size 12
103 * A filled-in copy of the header for initialization.
105 static const char template_header[] = {
106 /* name: 100 bytes */
107 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
108 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
109 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
111 /* Mode, space-null termination: 8 bytes */
112 '0','0','0','0','0','0', ' ','\0',
113 /* uid, space-null termination: 8 bytes */
114 '0','0','0','0','0','0', ' ','\0',
115 /* gid, space-null termination: 8 bytes */
116 '0','0','0','0','0','0', ' ','\0',
117 /* size, space termination: 12 bytes */
118 '0','0','0','0','0','0','0','0','0','0','0', ' ',
119 /* mtime, space termination: 12 bytes */
120 '0','0','0','0','0','0','0','0','0','0','0', ' ',
121 /* Initial checksum value: 8 spaces */
122 ' ',' ',' ',' ',' ',' ',' ',' ',
123 /* Typeflag: 1 byte */
124 '0', /* '0' = regular file */
125 /* Linkname: 100 bytes */
126 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
127 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
128 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
130 /* Magic: 6 bytes, Version: 2 bytes */
131 'u','s','t','a','r','\0', '0','0',
132 /* Uname: 32 bytes */
133 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
134 /* Gname: 32 bytes */
135 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
136 /* rdevmajor + space/null padding: 8 bytes */
137 '0','0','0','0','0','0', ' ','\0',
138 /* rdevminor + space/null padding: 8 bytes */
139 '0','0','0','0','0','0', ' ','\0',
140 /* Prefix: 155 bytes */
141 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
142 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
143 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
144 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
145 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,
146 /* Padding: 12 bytes */
147 0,0,0,0,0,0,0,0, 0,0,0,0
150 static ssize_t archive_write_ustar_data(struct archive_write *a, const void *buff,
152 static int archive_write_ustar_free(struct archive_write *);
153 static int archive_write_ustar_close(struct archive_write *);
154 static int archive_write_ustar_finish_entry(struct archive_write *);
155 static int archive_write_ustar_header(struct archive_write *,
156 struct archive_entry *entry);
157 static int archive_write_ustar_options(struct archive_write *,
158 const char *, const char *);
159 static int format_256(int64_t, char *, int);
160 static int format_number(int64_t, char *, int size, int max, int strict);
161 static int format_octal(int64_t, char *, int);
164 * Set output format to 'ustar' format.
167 archive_write_set_format_ustar(struct archive *_a)
169 struct archive_write *a = (struct archive_write *)_a;
172 archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
173 ARCHIVE_STATE_NEW, "archive_write_set_format_ustar");
175 /* If someone else was already registered, unregister them. */
176 if (a->format_free != NULL)
179 /* Basic internal sanity test. */
180 if (sizeof(template_header) != 512) {
181 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
182 "Internal: template_header wrong size: %zu should be 512",
183 sizeof(template_header));
184 return (ARCHIVE_FATAL);
187 ustar = (struct ustar *)calloc(1, sizeof(*ustar));
189 archive_set_error(&a->archive, ENOMEM,
190 "Can't allocate ustar data");
191 return (ARCHIVE_FATAL);
193 a->format_data = ustar;
194 a->format_name = "ustar";
195 a->format_options = archive_write_ustar_options;
196 a->format_write_header = archive_write_ustar_header;
197 a->format_write_data = archive_write_ustar_data;
198 a->format_close = archive_write_ustar_close;
199 a->format_free = archive_write_ustar_free;
200 a->format_finish_entry = archive_write_ustar_finish_entry;
201 a->archive.archive_format = ARCHIVE_FORMAT_TAR_USTAR;
202 a->archive.archive_format_name = "POSIX ustar";
207 archive_write_ustar_options(struct archive_write *a, const char *key,
210 struct ustar *ustar = (struct ustar *)a->format_data;
211 int ret = ARCHIVE_FAILED;
213 if (strcmp(key, "hdrcharset") == 0) {
214 if (val == NULL || val[0] == 0)
215 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
216 "%s: hdrcharset option needs a character-set name",
219 ustar->opt_sconv = archive_string_conversion_to_charset(
220 &a->archive, val, 0);
221 if (ustar->opt_sconv != NULL)
229 /* Note: The "warn" return is just to inform the options
230 * supervisor that we didn't handle it. It will generate
231 * a suitable error if no one used this option. */
232 return (ARCHIVE_WARN);
236 archive_write_ustar_header(struct archive_write *a, struct archive_entry *entry)
241 struct archive_entry *entry_main;
242 struct archive_string_conv *sconv;
244 ustar = (struct ustar *)a->format_data;
246 /* Setup default string conversion. */
247 if (ustar->opt_sconv == NULL) {
248 if (!ustar->init_default_conversion) {
249 ustar->sconv_default =
250 archive_string_default_conversion_for_write(&(a->archive));
251 ustar->init_default_conversion = 1;
253 sconv = ustar->sconv_default;
255 sconv = ustar->opt_sconv;
258 if (archive_entry_pathname(entry) == NULL) {
259 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
260 "Can't record entry in tar file without pathname");
261 return (ARCHIVE_FAILED);
264 /* Only regular files (not hardlinks) have data. */
265 if (archive_entry_hardlink(entry) != NULL ||
266 archive_entry_symlink(entry) != NULL ||
267 !(archive_entry_filetype(entry) == AE_IFREG))
268 archive_entry_set_size(entry, 0);
270 if (AE_IFDIR == archive_entry_filetype(entry)) {
274 * Ensure a trailing '/'. Modify the entry so
275 * the client sees the change.
277 #if defined(_WIN32) && !defined(__CYGWIN__)
280 wp = archive_entry_pathname_w(entry);
281 if (wp != NULL && wp[wcslen(wp) -1] != L'/') {
282 struct archive_wstring ws;
284 archive_string_init(&ws);
285 path_length = wcslen(wp);
286 if (archive_wstring_ensure(&ws,
287 path_length + 2) == NULL) {
288 archive_set_error(&a->archive, ENOMEM,
289 "Can't allocate ustar data");
290 archive_wstring_free(&ws);
291 return(ARCHIVE_FATAL);
293 /* Should we keep '\' ? */
294 if (wp[path_length -1] == L'\\')
296 archive_wstrncpy(&ws, wp, path_length);
297 archive_wstrappend_wchar(&ws, L'/');
298 archive_entry_copy_pathname_w(entry, ws.s);
299 archive_wstring_free(&ws);
303 p = archive_entry_pathname(entry);
305 * On Windows, this is a backup operation just in
306 * case getting WCS failed. On POSIX, this is a
309 if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') {
310 struct archive_string as;
312 archive_string_init(&as);
313 path_length = strlen(p);
314 if (archive_string_ensure(&as,
315 path_length + 2) == NULL) {
316 archive_set_error(&a->archive, ENOMEM,
317 "Can't allocate ustar data");
318 archive_string_free(&as);
319 return(ARCHIVE_FATAL);
321 #if defined(_WIN32) && !defined(__CYGWIN__)
322 /* NOTE: This might break the pathname
323 * if the current code page is CP932 and
324 * the pathname includes a character '\'
325 * as a part of its multibyte pathname. */
326 if (p[strlen(p) -1] == '\\')
330 archive_strncpy(&as, p, path_length);
331 archive_strappend_char(&as, '/');
332 archive_entry_copy_pathname(entry, as.s);
333 archive_string_free(&as);
337 #if defined(_WIN32) && !defined(__CYGWIN__)
338 /* Make sure the path separators in pathname, hardlink and symlink
339 * are all slash '/', not the Windows path separator '\'. */
340 entry_main = __la_win_entry_in_posix_pathseparator(entry);
341 if (entry_main == NULL) {
342 archive_set_error(&a->archive, ENOMEM,
343 "Can't allocate ustar data");
344 return(ARCHIVE_FATAL);
346 if (entry != entry_main)
353 ret = __archive_write_format_header_ustar(a, buff, entry, -1, 1, sconv);
354 if (ret < ARCHIVE_WARN) {
355 archive_entry_free(entry_main);
358 ret2 = __archive_write_output(a, buff, 512);
359 if (ret2 < ARCHIVE_WARN) {
360 archive_entry_free(entry_main);
366 ustar->entry_bytes_remaining = archive_entry_size(entry);
367 ustar->entry_padding = 0x1ff & (-(int64_t)ustar->entry_bytes_remaining);
368 archive_entry_free(entry_main);
373 * Format a basic 512-byte "ustar" header.
375 * Returns -1 if format failed (due to field overflow).
376 * Note that this always formats as much of the header as possible.
377 * If "strict" is set to zero, it will extend numeric fields as
378 * necessary (overwriting terminators or using base-256 extensions).
380 * This is exported so that other 'tar' formats can use it.
383 __archive_write_format_header_ustar(struct archive_write *a, char h[512],
384 struct archive_entry *entry, int tartype, int strict,
385 struct archive_string_conv *sconv)
387 unsigned int checksum;
396 * The "template header" already includes the "ustar"
397 * signature, various end-of-field markers and other required
400 memcpy(h, &template_header, 512);
403 * Because the block is already null-filled, and strings
404 * are allowed to exactly fill their destination (without null),
405 * I use memcpy(dest, src, strlen()) here a lot to copy strings.
407 r = archive_entry_pathname_l(entry, &pp, ©_length, sconv);
409 if (errno == ENOMEM) {
410 archive_set_error(&a->archive, ENOMEM,
411 "Can't allocate memory for Pathname");
412 return (ARCHIVE_FATAL);
414 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
415 "Can't translate pathname '%s' to %s",
416 pp, archive_string_conversion_charset_name(sconv));
419 if (copy_length <= USTAR_name_size)
420 memcpy(h + USTAR_name_offset, pp, copy_length);
422 /* Store in two pieces, splitting at a '/'. */
423 p = strchr(pp + copy_length - USTAR_name_size - 1, '/');
425 * Look for the next '/' if we chose the first character
426 * as the separator. (ustar format doesn't permit
430 p = strchr(p + 1, '/');
431 /* Fail if the name won't fit. */
434 archive_set_error(&a->archive, ENAMETOOLONG,
435 "Pathname too long");
436 ret = ARCHIVE_FAILED;
437 } else if (p[1] == '\0') {
439 * The only feasible separator is a final '/';
440 * this would result in a non-empty prefix and
441 * an empty name, which POSIX doesn't
442 * explicitly forbid, but it just feels wrong.
444 archive_set_error(&a->archive, ENAMETOOLONG,
445 "Pathname too long");
446 ret = ARCHIVE_FAILED;
447 } else if (p > pp + USTAR_prefix_size) {
448 /* Prefix is too long. */
449 archive_set_error(&a->archive, ENAMETOOLONG,
450 "Pathname too long");
451 ret = ARCHIVE_FAILED;
453 /* Copy prefix and remainder to appropriate places */
454 memcpy(h + USTAR_prefix_offset, pp, p - pp);
455 memcpy(h + USTAR_name_offset, p + 1,
456 pp + copy_length - p - 1);
460 r = archive_entry_hardlink_l(entry, &p, ©_length, sconv);
462 if (errno == ENOMEM) {
463 archive_set_error(&a->archive, ENOMEM,
464 "Can't allocate memory for Linkname");
465 return (ARCHIVE_FATAL);
467 archive_set_error(&a->archive,
468 ARCHIVE_ERRNO_FILE_FORMAT,
469 "Can't translate linkname '%s' to %s",
470 p, archive_string_conversion_charset_name(sconv));
476 r = archive_entry_symlink_l(entry, &p, ©_length, sconv);
478 if (errno == ENOMEM) {
479 archive_set_error(&a->archive, ENOMEM,
480 "Can't allocate memory for Linkname");
481 return (ARCHIVE_FATAL);
483 archive_set_error(&a->archive,
484 ARCHIVE_ERRNO_FILE_FORMAT,
485 "Can't translate linkname '%s' to %s",
486 p, archive_string_conversion_charset_name(sconv));
490 if (copy_length > 0) {
491 if (copy_length > USTAR_linkname_size) {
492 archive_set_error(&a->archive, ENAMETOOLONG,
493 "Link contents too long");
494 ret = ARCHIVE_FAILED;
495 copy_length = USTAR_linkname_size;
497 memcpy(h + USTAR_linkname_offset, p, copy_length);
500 r = archive_entry_uname_l(entry, &p, ©_length, sconv);
502 if (errno == ENOMEM) {
503 archive_set_error(&a->archive, ENOMEM,
504 "Can't allocate memory for Uname");
505 return (ARCHIVE_FATAL);
507 archive_set_error(&a->archive,
508 ARCHIVE_ERRNO_FILE_FORMAT,
509 "Can't translate uname '%s' to %s",
510 p, archive_string_conversion_charset_name(sconv));
513 if (copy_length > 0) {
514 if (copy_length > USTAR_uname_size) {
515 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
516 "Username too long");
517 ret = ARCHIVE_FAILED;
518 copy_length = USTAR_uname_size;
520 memcpy(h + USTAR_uname_offset, p, copy_length);
523 r = archive_entry_gname_l(entry, &p, ©_length, sconv);
525 if (errno == ENOMEM) {
526 archive_set_error(&a->archive, ENOMEM,
527 "Can't allocate memory for Gname");
528 return (ARCHIVE_FATAL);
530 archive_set_error(&a->archive,
531 ARCHIVE_ERRNO_FILE_FORMAT,
532 "Can't translate gname '%s' to %s",
533 p, archive_string_conversion_charset_name(sconv));
536 if (copy_length > 0) {
537 if (strlen(p) > USTAR_gname_size) {
538 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
539 "Group name too long");
540 ret = ARCHIVE_FAILED;
541 copy_length = USTAR_gname_size;
543 memcpy(h + USTAR_gname_offset, p, copy_length);
546 if (format_number(archive_entry_mode(entry) & 07777,
547 h + USTAR_mode_offset, USTAR_mode_size, USTAR_mode_max_size, strict)) {
548 archive_set_error(&a->archive, ERANGE,
549 "Numeric mode too large");
550 ret = ARCHIVE_FAILED;
553 if (format_number(archive_entry_uid(entry),
554 h + USTAR_uid_offset, USTAR_uid_size, USTAR_uid_max_size, strict)) {
555 archive_set_error(&a->archive, ERANGE,
556 "Numeric user ID too large");
557 ret = ARCHIVE_FAILED;
560 if (format_number(archive_entry_gid(entry),
561 h + USTAR_gid_offset, USTAR_gid_size, USTAR_gid_max_size, strict)) {
562 archive_set_error(&a->archive, ERANGE,
563 "Numeric group ID too large");
564 ret = ARCHIVE_FAILED;
567 if (format_number(archive_entry_size(entry),
568 h + USTAR_size_offset, USTAR_size_size, USTAR_size_max_size, strict)) {
569 archive_set_error(&a->archive, ERANGE,
570 "File size out of range");
571 ret = ARCHIVE_FAILED;
574 if (format_number(archive_entry_mtime(entry),
575 h + USTAR_mtime_offset, USTAR_mtime_size, USTAR_mtime_max_size, strict)) {
576 archive_set_error(&a->archive, ERANGE,
577 "File modification time too large");
578 ret = ARCHIVE_FAILED;
581 if (archive_entry_filetype(entry) == AE_IFBLK
582 || archive_entry_filetype(entry) == AE_IFCHR) {
583 if (format_number(archive_entry_rdevmajor(entry),
584 h + USTAR_rdevmajor_offset, USTAR_rdevmajor_size,
585 USTAR_rdevmajor_max_size, strict)) {
586 archive_set_error(&a->archive, ERANGE,
587 "Major device number too large");
588 ret = ARCHIVE_FAILED;
591 if (format_number(archive_entry_rdevminor(entry),
592 h + USTAR_rdevminor_offset, USTAR_rdevminor_size,
593 USTAR_rdevminor_max_size, strict)) {
594 archive_set_error(&a->archive, ERANGE,
595 "Minor device number too large");
596 ret = ARCHIVE_FAILED;
601 h[USTAR_typeflag_offset] = tartype;
602 } else if (mytartype >= 0) {
603 h[USTAR_typeflag_offset] = mytartype;
605 switch (archive_entry_filetype(entry)) {
606 case AE_IFREG: h[USTAR_typeflag_offset] = '0' ; break;
607 case AE_IFLNK: h[USTAR_typeflag_offset] = '2' ; break;
608 case AE_IFCHR: h[USTAR_typeflag_offset] = '3' ; break;
609 case AE_IFBLK: h[USTAR_typeflag_offset] = '4' ; break;
610 case AE_IFDIR: h[USTAR_typeflag_offset] = '5' ; break;
611 case AE_IFIFO: h[USTAR_typeflag_offset] = '6' ; break;
613 archive_set_error(&a->archive,
614 ARCHIVE_ERRNO_FILE_FORMAT,
615 "tar format cannot archive socket");
616 return (ARCHIVE_FAILED);
618 archive_set_error(&a->archive,
619 ARCHIVE_ERRNO_FILE_FORMAT,
620 "tar format cannot archive this (mode=0%lo)",
621 (unsigned long)archive_entry_mode(entry));
622 ret = ARCHIVE_FAILED;
627 for (i = 0; i < 512; i++)
628 checksum += 255 & (unsigned int)h[i];
629 h[USTAR_checksum_offset + 6] = '\0'; /* Can't be pre-set in the template. */
630 /* h[USTAR_checksum_offset + 7] = ' '; */ /* This is pre-set in the template. */
631 format_octal(checksum, h + USTAR_checksum_offset, 6);
636 * Format a number into a field, with some intelligence.
639 format_number(int64_t v, char *p, int s, int maxsize, int strict)
643 limit = ((int64_t)1 << (s*3));
645 /* "Strict" only permits octal values with proper termination. */
647 return (format_octal(v, p, s));
650 * In non-strict mode, we allow the number to overwrite one or
651 * more bytes of the field termination. Even old tar
652 * implementations should be able to handle this with no
656 while (s <= maxsize) {
658 return (format_octal(v, p, s));
664 /* Base-256 can handle any number, positive or negative. */
665 return (format_256(v, p, maxsize));
669 * Format a number into the specified field using base-256.
672 format_256(int64_t v, char *p, int s)
676 *--p = (char)(v & 0xff);
679 *p |= 0x80; /* Set the base-256 marker bit. */
684 * Format a number into the specified field.
687 format_octal(int64_t v, char *p, int s)
693 /* Octal values can't be negative, so use 0. */
700 p += s; /* Start at the end and work backwards. */
702 *--p = (char)('0' + (v & 7));
709 /* If it overflowed, fill field with max value. */
717 archive_write_ustar_close(struct archive_write *a)
719 return (__archive_write_nulls(a, 512*2));
723 archive_write_ustar_free(struct archive_write *a)
727 ustar = (struct ustar *)a->format_data;
729 a->format_data = NULL;
734 archive_write_ustar_finish_entry(struct archive_write *a)
739 ustar = (struct ustar *)a->format_data;
740 ret = __archive_write_nulls(a,
741 (size_t)(ustar->entry_bytes_remaining + ustar->entry_padding));
742 ustar->entry_bytes_remaining = ustar->entry_padding = 0;
747 archive_write_ustar_data(struct archive_write *a, const void *buff, size_t s)
752 ustar = (struct ustar *)a->format_data;
753 if (s > ustar->entry_bytes_remaining)
754 s = (size_t)ustar->entry_bytes_remaining;
755 ret = __archive_write_output(a, buff, s);
756 ustar->entry_bytes_remaining -= s;
757 if (ret != ARCHIVE_OK)