2
* Copyright (c) 2003-2007 Tim Kientzle
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* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "bsdtar_platform.h"
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__FBSDID("$FreeBSD: src/usr.bin/tar/write.c,v 1.79 2008/11/27 05:49:52 kientzle Exp $");
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
32
#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#ifdef HAVE_SYS_STAT_H
38
#ifdef HAVE_ATTR_XATTR_H
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#include <attr/xattr.h>
56
#ifdef HAVE_LINUX_FS_H
57
#include <linux/fs.h> /* for Linux file flags */
60
* Some Linux distributions have both linux/ext2_fs.h and ext2fs/ext2_fs.h.
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* As the include guards don't agree, the order of include is important.
63
#ifdef HAVE_LINUX_EXT2_FS_H
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#include <linux/ext2_fs.h> /* for Linux file flags */
66
#if defined(HAVE_EXT2FS_EXT2_FS_H) && !defined(__CYGWIN__)
67
/* This header exists but is broken on Cygwin. */
68
#include <ext2fs/ext2_fs.h>
89
#include "line_reader.h"
92
/* Size of buffer for holding file data prior to writing. */
93
#define FILEDATABUFLEN 65536
95
/* Fixed size of uname/gname caches. */
96
#define name_cache_size 101
102
static const char * const NO_NAME = "(noname)";
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struct archive_dir_entry {
105
struct archive_dir_entry *next;
112
struct archive_dir_entry *head, *tail;
122
} cache[name_cache_size];
125
static void add_dir_list(struct bsdtar *bsdtar, const char *path,
126
time_t mtime_sec, int mtime_nsec);
127
static int append_archive(struct bsdtar *, struct archive *,
128
struct archive *ina);
129
static int append_archive_filename(struct bsdtar *,
130
struct archive *, const char *fname);
131
static void archive_names_from_file(struct bsdtar *bsdtar,
133
static int copy_file_data(struct bsdtar *, struct archive *a,
134
struct archive *ina, struct archive_entry *);
135
static int new_enough(struct bsdtar *, const char *path,
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const struct stat *);
137
static void report_write(struct bsdtar *, struct archive *,
138
struct archive_entry *, int64_t progress);
139
static void test_for_append(struct bsdtar *);
140
static void write_archive(struct archive *, struct bsdtar *);
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static void write_entry_backend(struct bsdtar *, struct archive *,
142
struct archive_entry *);
143
static int write_file_data(struct bsdtar *, struct archive *,
144
struct archive_entry *, int fd);
145
static void write_hierarchy(struct bsdtar *, struct archive *,
148
#if defined(_WIN32) && !defined(__CYGWIN__)
149
/* Not a full lseek() emulation, but enough for our needs here. */
151
seek_file(int fd, int64_t offset, int whence)
153
LARGE_INTEGER distance;
154
(void)whence; /* UNUSED */
155
distance.QuadPart = offset;
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return (SetFilePointerEx((HANDLE)_get_osfhandle(fd),
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distance, NULL, FILE_BEGIN) ? 1 : -1);
162
#define lseek seek_file
166
tar_mode_c(struct bsdtar *bsdtar)
171
if (*bsdtar->argv == NULL && bsdtar->names_from_file == NULL)
172
lafe_errc(1, 0, "no files or directories specified");
174
a = archive_write_new();
176
/* Support any format that the library supports. */
177
if (bsdtar->create_format == NULL) {
178
r = archive_write_set_format_pax_restricted(a);
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bsdtar->create_format = "pax restricted";
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r = archive_write_set_format_by_name(a, bsdtar->create_format);
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if (r != ARCHIVE_OK) {
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fprintf(stderr, "Can't use format %s: %s\n",
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bsdtar->create_format,
186
archive_error_string(a));
191
* If user explicitly set the block size, then assume they
192
* want the last block padded as well. Otherwise, use the
193
* default block size and accept archive_write_open_file()'s
194
* default padding decisions.
196
if (bsdtar->bytes_per_block != 0) {
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archive_write_set_bytes_per_block(a, bsdtar->bytes_per_block);
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archive_write_set_bytes_in_last_block(a,
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bsdtar->bytes_per_block);
201
archive_write_set_bytes_per_block(a, DEFAULT_BYTES_PER_BLOCK);
203
if (bsdtar->compress_program) {
204
archive_write_set_compression_program(a, bsdtar->compress_program);
206
switch (bsdtar->create_compression) {
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r = archive_write_set_compression_none(a);
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r = archive_write_set_compression_bzip2(a);
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r = archive_write_set_compression_xz(a);
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r = archive_write_set_compression_lzma(a);
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r = archive_write_set_compression_gzip(a);
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r = archive_write_set_compression_compress(a);
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"Unrecognized compression option -%c",
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bsdtar->create_compression);
230
if (r != ARCHIVE_OK) {
232
"Unsupported compression option -%c",
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bsdtar->create_compression);
237
if (ARCHIVE_OK != archive_write_set_options(a, bsdtar->option_options))
238
lafe_errc(1, 0, "%s", archive_error_string(a));
239
if (ARCHIVE_OK != archive_write_open_file(a, bsdtar->filename))
240
lafe_errc(1, 0, "%s", archive_error_string(a));
241
write_archive(a, bsdtar);
245
* Same as 'c', except we only support tar or empty formats in
246
* uncompressed files on disk.
249
tar_mode_r(struct bsdtar *bsdtar)
254
struct archive_entry *entry;
257
/* Sanity-test some arguments and the file. */
258
test_for_append(bsdtar);
260
format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED;
262
#if defined(__BORLANDC__)
263
bsdtar->fd = open(bsdtar->filename, O_RDWR | O_CREAT | O_BINARY);
265
bsdtar->fd = open(bsdtar->filename, O_RDWR | O_CREAT | O_BINARY, 0666);
269
"Cannot open %s", bsdtar->filename);
271
a = archive_read_new();
272
archive_read_support_compression_all(a);
273
archive_read_support_format_tar(a);
274
archive_read_support_format_gnutar(a);
275
r = archive_read_open_fd(a, bsdtar->fd, 10240);
277
lafe_errc(1, archive_errno(a),
278
"Can't read archive %s: %s", bsdtar->filename,
279
archive_error_string(a));
280
while (0 == archive_read_next_header(a, &entry)) {
281
if (archive_compression(a) != ARCHIVE_COMPRESSION_NONE) {
282
archive_read_finish(a);
285
"Cannot append to compressed archive.");
287
/* Keep going until we hit end-of-archive */
288
format = archive_format(a);
291
end_offset = archive_read_header_position(a);
292
archive_read_finish(a);
294
/* Re-open archive for writing */
295
a = archive_write_new();
296
archive_write_set_compression_none(a);
298
* Set the format to be used for writing. To allow people to
299
* extend empty files, we need to allow them to specify the format,
300
* which opens the possibility that they will specify a format that
301
* doesn't match the existing format. Hence, the following bit
302
* of arcane ugliness.
305
if (bsdtar->create_format != NULL) {
306
/* If the user requested a format, use that, but ... */
307
archive_write_set_format_by_name(a,
308
bsdtar->create_format);
309
/* ... complain if it's not compatible. */
310
format &= ARCHIVE_FORMAT_BASE_MASK;
311
if (format != (int)(archive_format(a) & ARCHIVE_FORMAT_BASE_MASK)
312
&& format != ARCHIVE_FORMAT_EMPTY) {
314
"Format %s is incompatible with the archive %s.",
315
bsdtar->create_format, bsdtar->filename);
319
* Just preserve the current format, with a little care
320
* for formats that libarchive can't write.
322
if (format == ARCHIVE_FORMAT_TAR_GNUTAR)
323
/* TODO: When gtar supports pax, use pax restricted. */
324
format = ARCHIVE_FORMAT_TAR_USTAR;
325
if (format == ARCHIVE_FORMAT_EMPTY)
326
format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED;
327
archive_write_set_format(a, format);
329
if (lseek(bsdtar->fd, end_offset, SEEK_SET) < 0)
330
lafe_errc(1, errno, "Could not seek to archive end");
331
if (ARCHIVE_OK != archive_write_set_options(a, bsdtar->option_options))
332
lafe_errc(1, 0, "%s", archive_error_string(a));
333
if (ARCHIVE_OK != archive_write_open_fd(a, bsdtar->fd))
334
lafe_errc(1, 0, "%s", archive_error_string(a));
336
write_archive(a, bsdtar); /* XXX check return val XXX */
343
tar_mode_u(struct bsdtar *bsdtar)
347
struct archive_entry *entry;
349
struct archive_dir_entry *p;
350
struct archive_dir archive_dir;
352
bsdtar->archive_dir = &archive_dir;
353
memset(&archive_dir, 0, sizeof(archive_dir));
355
format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED;
357
/* Sanity-test some arguments and the file. */
358
test_for_append(bsdtar);
360
bsdtar->fd = open(bsdtar->filename, O_RDWR | O_BINARY);
363
"Cannot open %s", bsdtar->filename);
365
a = archive_read_new();
366
archive_read_support_compression_all(a);
367
archive_read_support_format_tar(a);
368
archive_read_support_format_gnutar(a);
369
if (archive_read_open_fd(a, bsdtar->fd,
370
bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block :
371
DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
373
"Can't open %s: %s", bsdtar->filename,
374
archive_error_string(a));
377
/* Build a list of all entries and their recorded mod times. */
378
while (0 == archive_read_next_header(a, &entry)) {
379
if (archive_compression(a) != ARCHIVE_COMPRESSION_NONE) {
380
archive_read_finish(a);
383
"Cannot append to compressed archive.");
385
add_dir_list(bsdtar, archive_entry_pathname(entry),
386
archive_entry_mtime(entry),
387
archive_entry_mtime_nsec(entry));
388
/* Record the last format determination we see */
389
format = archive_format(a);
390
/* Keep going until we hit end-of-archive */
393
end_offset = archive_read_header_position(a);
394
archive_read_finish(a);
396
/* Re-open archive for writing. */
397
a = archive_write_new();
398
archive_write_set_compression_none(a);
400
* Set format to same one auto-detected above, except that
401
* we don't write GNU tar format, so use ustar instead.
403
if (format == ARCHIVE_FORMAT_TAR_GNUTAR)
404
format = ARCHIVE_FORMAT_TAR_USTAR;
405
archive_write_set_format(a, format);
406
if (bsdtar->bytes_per_block != 0) {
407
archive_write_set_bytes_per_block(a, bsdtar->bytes_per_block);
408
archive_write_set_bytes_in_last_block(a,
409
bsdtar->bytes_per_block);
411
archive_write_set_bytes_per_block(a, DEFAULT_BYTES_PER_BLOCK);
412
if (lseek(bsdtar->fd, end_offset, SEEK_SET) < 0)
413
lafe_errc(1, errno, "Could not seek to archive end");
414
if (ARCHIVE_OK != archive_write_set_options(a, bsdtar->option_options))
415
lafe_errc(1, 0, "%s", archive_error_string(a));
416
if (ARCHIVE_OK != archive_write_open_fd(a, bsdtar->fd))
417
lafe_errc(1, 0, "%s", archive_error_string(a));
419
write_archive(a, bsdtar);
424
while (bsdtar->archive_dir->head != NULL) {
425
p = bsdtar->archive_dir->head->next;
426
free(bsdtar->archive_dir->head->name);
427
free(bsdtar->archive_dir->head);
428
bsdtar->archive_dir->head = p;
430
bsdtar->archive_dir->tail = NULL;
435
* Write user-specified files/dirs to opened archive.
438
write_archive(struct archive *a, struct bsdtar *bsdtar)
441
struct archive_entry *entry, *sparse_entry;
443
/* Allocate a buffer for file data. */
444
if ((bsdtar->buff = malloc(FILEDATABUFLEN)) == NULL)
445
lafe_errc(1, 0, "cannot allocate memory");
447
if ((bsdtar->resolver = archive_entry_linkresolver_new()) == NULL)
448
lafe_errc(1, 0, "cannot create link resolver");
449
archive_entry_linkresolver_set_strategy(bsdtar->resolver,
451
if ((bsdtar->diskreader = archive_read_disk_new()) == NULL)
452
lafe_errc(1, 0, "Cannot create read_disk object");
453
archive_read_disk_set_standard_lookup(bsdtar->diskreader);
455
if (bsdtar->names_from_file != NULL)
456
archive_names_from_file(bsdtar, a);
458
while (*bsdtar->argv) {
460
if (arg[0] == '-' && arg[1] == 'C') {
467
"Missing argument for -C");
468
bsdtar->return_value = 1;
472
set_chdir(bsdtar, arg);
474
if (*arg != '/' && (arg[0] != '@' || arg[1] != '/'))
475
do_chdir(bsdtar); /* Handle a deferred -C */
477
if (append_archive_filename(bsdtar, a,
481
write_hierarchy(bsdtar, a, arg);
487
archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
488
while (entry != NULL) {
489
write_entry_backend(bsdtar, a, entry);
490
archive_entry_free(entry);
492
archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
495
if (archive_write_close(a)) {
496
lafe_warnc(0, "%s", archive_error_string(a));
497
bsdtar->return_value = 1;
501
/* Free file data buffer. */
503
archive_entry_linkresolver_free(bsdtar->resolver);
504
bsdtar->resolver = NULL;
505
archive_read_finish(bsdtar->diskreader);
506
bsdtar->diskreader = NULL;
508
if (bsdtar->option_totals) {
509
fprintf(stderr, "Total bytes written: %s\n",
510
tar_i64toa(archive_position_compressed(a)));
513
archive_write_finish(a);
517
* Archive names specified in file.
519
* Unless --null was specified, a line containing exactly "-C" will
520
* cause the next line to be a directory to pass to chdir(). If
521
* --null is specified, then a line "-C" is just another filename.
524
archive_names_from_file(struct bsdtar *bsdtar, struct archive *a)
526
struct lafe_line_reader *lr;
529
bsdtar->next_line_is_dir = 0;
531
lr = lafe_line_reader(bsdtar->names_from_file, bsdtar->option_null);
532
while ((line = lafe_line_reader_next(lr)) != NULL) {
533
if (bsdtar->next_line_is_dir) {
534
set_chdir(bsdtar, line);
535
bsdtar->next_line_is_dir = 0;
536
} else if (!bsdtar->option_null && strcmp(line, "-C") == 0)
537
bsdtar->next_line_is_dir = 1;
540
do_chdir(bsdtar); /* Handle a deferred -C */
541
write_hierarchy(bsdtar, a, line);
544
lafe_line_reader_free(lr);
545
if (bsdtar->next_line_is_dir)
547
"Unexpected end of filename list; "
548
"directory expected after -C");
552
* Copy from specified archive to current archive. Returns non-zero
553
* for write errors (which force us to terminate the entire archiving
554
* operation). If there are errors reading the input archive, we set
555
* bsdtar->return_value but return zero, so the overall archiving
556
* operation will complete and return non-zero.
559
append_archive_filename(struct bsdtar *bsdtar, struct archive *a,
560
const char *filename)
565
if (strcmp(filename, "-") == 0)
566
filename = NULL; /* Library uses NULL for stdio. */
568
ina = archive_read_new();
569
archive_read_support_format_all(ina);
570
archive_read_support_compression_all(ina);
571
if (archive_read_open_file(ina, filename, 10240)) {
572
lafe_warnc(0, "%s", archive_error_string(ina));
573
bsdtar->return_value = 1;
577
rc = append_archive(bsdtar, a, ina);
579
if (rc != ARCHIVE_OK) {
580
lafe_warnc(0, "Error reading archive %s: %s",
581
filename, archive_error_string(ina));
582
bsdtar->return_value = 1;
584
archive_read_finish(ina);
590
append_archive(struct bsdtar *bsdtar, struct archive *a, struct archive *ina)
592
struct archive_entry *in_entry;
595
while (0 == archive_read_next_header(ina, &in_entry)) {
596
if (!new_enough(bsdtar, archive_entry_pathname(in_entry),
597
archive_entry_stat(in_entry)))
599
if (lafe_excluded(bsdtar->matching, archive_entry_pathname(in_entry)))
601
if (bsdtar->option_interactive &&
602
!yes("copy '%s'", archive_entry_pathname(in_entry)))
605
safe_fprintf(stderr, "a %s",
606
archive_entry_pathname(in_entry));
608
report_write(bsdtar, a, in_entry, 0);
610
e = archive_write_header(a, in_entry);
611
if (e != ARCHIVE_OK) {
612
if (!bsdtar->verbose)
613
lafe_warnc(0, "%s: %s",
614
archive_entry_pathname(in_entry),
615
archive_error_string(a));
617
fprintf(stderr, ": %s", archive_error_string(a));
619
if (e == ARCHIVE_FATAL)
622
if (e >= ARCHIVE_WARN) {
623
if (archive_entry_size(in_entry) == 0)
624
archive_read_data_skip(ina);
625
else if (copy_file_data(bsdtar, a, ina, in_entry))
630
fprintf(stderr, "\n");
633
/* Note: If we got here, we saw no write errors, so return success. */
637
/* Helper function to copy data between archives. */
639
copy_file_data(struct bsdtar *bsdtar, struct archive *a,
640
struct archive *ina, struct archive_entry *entry)
643
ssize_t bytes_written;
644
int64_t progress = 0;
646
bytes_read = archive_read_data(ina, bsdtar->buff, FILEDATABUFLEN);
647
while (bytes_read > 0) {
649
report_write(bsdtar, a, entry, progress);
651
bytes_written = archive_write_data(a, bsdtar->buff,
653
if (bytes_written < bytes_read) {
654
lafe_warnc(0, "%s", archive_error_string(a));
657
progress += bytes_written;
658
bytes_read = archive_read_data(ina, bsdtar->buff,
666
* Add the file or dir hierarchy named by 'path' to the archive
669
write_hierarchy(struct bsdtar *bsdtar, struct archive *a, const char *path)
671
struct archive_entry *entry = NULL, *spare_entry = NULL;
673
char symlink_mode = bsdtar->symlink_mode;
675
int dev_recorded = 0;
678
tree = tree_open(path);
681
lafe_warnc(errno, "%s: Cannot open", path);
682
bsdtar->return_value = 1;
686
while ((tree_ret = tree_next(tree)) != 0) {
688
const char *name = tree_current_path(tree);
689
const struct stat *st = NULL; /* info to use for this entry */
690
const struct stat *lst = NULL; /* lstat() information */
693
if (tree_ret == TREE_ERROR_FATAL)
694
lafe_errc(1, tree_errno(tree),
695
"%s: Unable to continue traversing directory tree",
697
if (tree_ret == TREE_ERROR_DIR) {
699
"%s: Couldn't visit directory", name);
700
bsdtar->return_value = 1;
702
if (tree_ret != TREE_REGULAR)
706
* If this file/dir is excluded by a filename
709
if (lafe_excluded(bsdtar->matching, name))
713
* Get lstat() info from the tree library.
715
lst = tree_current_lstat(tree);
717
/* Couldn't lstat(); must not exist. */
718
lafe_warnc(errno, "%s: Cannot stat", name);
719
/* Return error if files disappear during traverse. */
720
bsdtar->return_value = 1;
725
* Distinguish 'L'/'P'/'H' symlink following.
727
switch(symlink_mode) {
729
/* 'H': After the first item, rest like 'P'. */
731
/* 'H': First item (from command line) like 'L'. */
734
/* 'L': Do descend through a symlink to dir. */
735
descend = tree_current_is_dir(tree);
736
/* 'L': Follow symlinks to files. */
737
archive_read_disk_set_symlink_logical(bsdtar->diskreader);
738
/* 'L': Archive symlinks as targets, if we can. */
739
st = tree_current_stat(tree);
742
/* If stat fails, we have a broken symlink;
743
* in that case, don't follow the link. */
746
/* 'P': Don't descend through a symlink to dir. */
747
descend = tree_current_is_physical_dir(tree);
748
/* 'P': Don't follow symlinks to files. */
749
archive_read_disk_set_symlink_physical(bsdtar->diskreader);
750
/* 'P': Archive symlinks as symlinks. */
756
* Are we about to cross to a new filesystem?
759
/* This is the initial file system. */
760
first_dev = lst->st_dev;
762
} else if (lst->st_dev == first_dev) {
763
/* The starting file system is always acceptable. */
764
} else if (descend == 0) {
765
/* We're not descending, so no need to check. */
766
} else if (bsdtar->option_dont_traverse_mounts) {
767
/* User has asked us not to cross mount points. */
770
/* We're prepared to cross a mount point. */
772
/* XXX TODO: check whether this filesystem is
773
* synthetic and/or local. Add a new
774
* --local-only option to skip non-local
775
* filesystems. Skip synthetic filesystems
778
* The results should be cached, since
779
* tree.c doesn't usually visit a directory
780
* and the directory contents together. A simple
781
* move-to-front list should perform quite well.
783
* This is going to be heavily OS dependent:
784
* FreeBSD's statfs() in conjunction with getvfsbyname()
785
* provides all of this; NetBSD's statvfs() does
786
* most of it; other systems will vary.
791
* In -u mode, check that the file is newer than what's
792
* already in the archive; in all modes, obey --newerXXX flags.
794
if (!new_enough(bsdtar, name, st))
797
archive_entry_free(entry);
798
entry = archive_entry_new();
800
archive_entry_set_pathname(entry, name);
801
archive_entry_copy_sourcepath(entry,
802
tree_current_access_path(tree));
804
/* Populate the archive_entry with metadata from the disk. */
805
/* XXX TODO: Arrange to open a regular file before
806
* calling this so we can pass in an fd and shorten
807
* the race to query metadata. The linkify dance
808
* makes this more complex than it might sound. */
809
#if defined(_WIN32) && !defined(__CYGWIN__)
810
/* TODO: tree.c uses stat(), which is badly broken
811
* on Windows. To fix this, we should
812
* deprecate tree_current_stat() and provide a new
813
* call tree_populate_entry(t, entry). This call
814
* would use stat() internally on POSIX and
815
* GetInfoByFileHandle() internally on Windows.
816
* This would be another step towards a tree-walker
817
* that can be integrated deep into libarchive.
818
* For now, just set st to NULL on Windows;
819
* archive_read_disk_entry_from_file() should
820
* be smart enough to use platform-appropriate
821
* ways to probe file information.
825
r = archive_read_disk_entry_from_file(bsdtar->diskreader,
828
lafe_warnc(archive_errno(bsdtar->diskreader),
829
"%s", archive_error_string(bsdtar->diskreader));
830
if (r < ARCHIVE_WARN)
833
/* XXX TODO: Just use flag data from entry; avoid the
834
* duplicate check here. */
837
* If this file/dir is flagged "nodump" and we're
838
* honoring such flags, skip this file/dir.
840
#if defined(HAVE_STRUCT_STAT_ST_FLAGS) && defined(UF_NODUMP)
841
/* BSD systems store flags in struct stat */
842
if (bsdtar->option_honor_nodump &&
843
(lst->st_flags & UF_NODUMP))
847
#if defined(EXT2_IOC_GETFLAGS) && defined(EXT2_NODUMP_FL)
848
/* Linux uses ioctl to read flags. */
849
if (bsdtar->option_honor_nodump) {
850
int fd = open(name, O_RDONLY | O_NONBLOCK | O_BINARY);
852
unsigned long fflags;
853
int r = ioctl(fd, EXT2_IOC_GETFLAGS, &fflags);
855
if (r >= 0 && (fflags & EXT2_NODUMP_FL))
862
* If the user vetoes this file/directory, skip it.
863
* We want this to be fairly late; if some other
864
* check would veto this file, we shouldn't bother
867
if (bsdtar->option_interactive &&
868
!yes("add '%s'", name))
871
/* Note: if user vetoes, we won't descend. */
872
if (descend && !bsdtar->option_no_subdirs)
876
* Rewrite the pathname to be archived. If rewrite
877
* fails, skip the entry.
879
if (edit_pathname(bsdtar, entry))
882
/* Display entry as we process it.
883
* This format is required by SUSv2. */
885
safe_fprintf(stderr, "a %s",
886
archive_entry_pathname(entry));
888
/* Non-regular files get archived with zero size. */
889
if (archive_entry_filetype(entry) != AE_IFREG)
890
archive_entry_set_size(entry, 0);
892
archive_entry_linkify(bsdtar->resolver, &entry, &spare_entry);
894
while (entry != NULL) {
895
write_entry_backend(bsdtar, a, entry);
896
archive_entry_free(entry);
902
fprintf(stderr, "\n");
904
archive_entry_free(entry);
909
* Backend for write_entry.
912
write_entry_backend(struct bsdtar *bsdtar, struct archive *a,
913
struct archive_entry *entry)
918
if (archive_entry_size(entry) > 0) {
919
const char *pathname = archive_entry_sourcepath(entry);
920
fd = open(pathname, O_RDONLY | O_BINARY);
922
if (!bsdtar->verbose)
924
"%s: could not open file", pathname);
926
fprintf(stderr, ": %s", strerror(errno));
931
e = archive_write_header(a, entry);
932
if (e != ARCHIVE_OK) {
933
if (!bsdtar->verbose)
934
lafe_warnc(0, "%s: %s",
935
archive_entry_pathname(entry),
936
archive_error_string(a));
938
fprintf(stderr, ": %s", archive_error_string(a));
941
if (e == ARCHIVE_FATAL)
945
* If we opened a file earlier, write it out now. Note that
946
* the format handler might have reset the size field to zero
947
* to inform us that the archive body won't get stored. In
948
* that case, just skip the write.
950
if (e >= ARCHIVE_WARN && fd >= 0 && archive_entry_size(entry) > 0) {
951
if (write_file_data(bsdtar, a, entry, fd))
956
* If we opened a file, close it now even if there was an error
957
* which made us decide not to write the archive body.
964
report_write(struct bsdtar *bsdtar, struct archive *a,
965
struct archive_entry *entry, int64_t progress)
967
uint64_t comp, uncomp;
969
fprintf(stderr, "\n");
970
comp = archive_position_compressed(a);
971
uncomp = archive_position_uncompressed(a);
972
fprintf(stderr, "In: %d files, %s bytes;",
973
archive_file_count(a), tar_i64toa(uncomp));
975
" Out: %s bytes, compression %d%%\n",
976
tar_i64toa(comp), (int)((uncomp - comp) * 100 / uncomp));
977
/* Can't have two calls to tar_i64toa() pending, so split the output. */
978
safe_fprintf(stderr, "Current: %s (%s",
979
archive_entry_pathname(entry),
980
tar_i64toa(progress));
981
fprintf(stderr, "/%s bytes)\n",
982
tar_i64toa(archive_entry_size(entry)));
986
/* Helper function to copy file to archive. */
988
write_file_data(struct bsdtar *bsdtar, struct archive *a,
989
struct archive_entry *entry, int fd)
992
ssize_t bytes_written;
993
int64_t progress = 0;
995
bytes_read = read(fd, bsdtar->buff, FILEDATABUFLEN);
996
while (bytes_read > 0) {
998
report_write(bsdtar, a, entry, progress);
1000
bytes_written = archive_write_data(a, bsdtar->buff,
1002
if (bytes_written < 0) {
1003
/* Write failed; this is bad */
1004
lafe_warnc(0, "%s", archive_error_string(a));
1007
if (bytes_written < bytes_read) {
1008
/* Write was truncated; warn but continue. */
1010
"%s: Truncated write; file may have grown while being archived.",
1011
archive_entry_pathname(entry));
1014
progress += bytes_written;
1015
bytes_read = read(fd, bsdtar->buff, FILEDATABUFLEN);
1021
* Test if the specified file is new enough to include in the archive.
1024
new_enough(struct bsdtar *bsdtar, const char *path, const struct stat *st)
1026
struct archive_dir_entry *p;
1029
* If this file/dir is excluded by a time comparison, skip it.
1031
if (bsdtar->newer_ctime_sec > 0) {
1032
if (st->st_ctime < bsdtar->newer_ctime_sec)
1033
return (0); /* Too old, skip it. */
1034
if (st->st_ctime == bsdtar->newer_ctime_sec
1035
&& ARCHIVE_STAT_CTIME_NANOS(st)
1036
<= bsdtar->newer_ctime_nsec)
1037
return (0); /* Too old, skip it. */
1039
if (bsdtar->newer_mtime_sec > 0) {
1040
if (st->st_mtime < bsdtar->newer_mtime_sec)
1041
return (0); /* Too old, skip it. */
1042
if (st->st_mtime == bsdtar->newer_mtime_sec
1043
&& ARCHIVE_STAT_MTIME_NANOS(st)
1044
<= bsdtar->newer_mtime_nsec)
1045
return (0); /* Too old, skip it. */
1049
* In -u mode, we only write an entry if it's newer than
1050
* what was already in the archive.
1052
if (bsdtar->archive_dir != NULL &&
1053
bsdtar->archive_dir->head != NULL) {
1054
for (p = bsdtar->archive_dir->head; p != NULL; p = p->next) {
1055
if (pathcmp(path, p->name)==0)
1056
return (p->mtime_sec < st->st_mtime ||
1057
(p->mtime_sec == st->st_mtime &&
1059
< ARCHIVE_STAT_MTIME_NANOS(st)));
1063
/* If the file wasn't rejected, include it. */
1068
* Add an entry to the dir list for 'u' mode.
1070
* XXX TODO: Make this fast.
1073
add_dir_list(struct bsdtar *bsdtar, const char *path,
1074
time_t mtime_sec, int mtime_nsec)
1076
struct archive_dir_entry *p;
1079
* Search entire list to see if this file has appeared before.
1080
* If it has, override the timestamp data.
1082
p = bsdtar->archive_dir->head;
1084
if (strcmp(path, p->name)==0) {
1085
p->mtime_sec = mtime_sec;
1086
p->mtime_nsec = mtime_nsec;
1092
p = malloc(sizeof(*p));
1094
lafe_errc(1, ENOMEM, "Can't read archive directory");
1096
p->name = strdup(path);
1097
if (p->name == NULL)
1098
lafe_errc(1, ENOMEM, "Can't read archive directory");
1099
p->mtime_sec = mtime_sec;
1100
p->mtime_nsec = mtime_nsec;
1102
if (bsdtar->archive_dir->tail == NULL) {
1103
bsdtar->archive_dir->head = bsdtar->archive_dir->tail = p;
1105
bsdtar->archive_dir->tail->next = p;
1106
bsdtar->archive_dir->tail = p;
1111
test_for_append(struct bsdtar *bsdtar)
1115
if (*bsdtar->argv == NULL && bsdtar->names_from_file == NULL)
1116
lafe_errc(1, 0, "no files or directories specified");
1117
if (bsdtar->filename == NULL)
1118
lafe_errc(1, 0, "Cannot append to stdout.");
1120
if (bsdtar->create_compression != 0)
1122
"Cannot append to %s with compression", bsdtar->filename);
1124
if (stat(bsdtar->filename, &s) != 0)
1127
if (!S_ISREG(s.st_mode) && !S_ISBLK(s.st_mode))
1129
"Cannot append to %s: not a regular file.",
1132
/* Is this an appropriate check here on Windows? */
1134
if (GetFileType(handle) != FILE_TYPE_DISK)
1135
lafe_errc(1, 0, "Cannot append");
added
removed
src/libarchive/tar/write.c
