| /*- |
| * Copyright (c) 2003-2007 Tim Kientzle |
| * Copyright (c) 2012 Michihiro NAKAJIMA |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "bsdtar_platform.h" |
| __FBSDID("$FreeBSD: src/usr.bin/tar/write.c,v 1.79 2008/11/27 05:49:52 kientzle Exp $"); |
| |
| #ifdef HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| #ifdef HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif |
| #ifdef HAVE_ATTR_XATTR_H |
| #include <attr/xattr.h> |
| #endif |
| #ifdef HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #ifdef HAVE_FCNTL_H |
| #include <fcntl.h> |
| #endif |
| #ifdef HAVE_GRP_H |
| #include <grp.h> |
| #endif |
| #ifdef HAVE_IO_H |
| #include <io.h> |
| #endif |
| #ifdef HAVE_LIBGEN_H |
| #include <libgen.h> |
| #endif |
| #ifdef HAVE_LIMITS_H |
| #include <limits.h> |
| #endif |
| #ifdef HAVE_PATHS_H |
| #include <paths.h> |
| #endif |
| #ifdef HAVE_PWD_H |
| #include <pwd.h> |
| #endif |
| #ifdef HAVE_STDINT_H |
| #include <stdint.h> |
| #endif |
| #include <stdio.h> |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| #ifdef HAVE_STRING_H |
| #include <string.h> |
| #endif |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| #include "bsdtar.h" |
| #include "err.h" |
| #include "line_reader.h" |
| |
| #ifndef O_BINARY |
| #define O_BINARY 0 |
| #endif |
| |
| struct archive_dir_entry { |
| struct archive_dir_entry *next; |
| time_t mtime_sec; |
| int mtime_nsec; |
| char *name; |
| }; |
| |
| struct archive_dir { |
| struct archive_dir_entry *head, *tail; |
| }; |
| |
| static int append_archive(struct bsdtar *, struct archive *, |
| struct archive *ina); |
| static int append_archive_filename(struct bsdtar *, |
| struct archive *, const char *fname); |
| static void archive_names_from_file(struct bsdtar *bsdtar, |
| struct archive *a); |
| static int copy_file_data_block(struct bsdtar *, |
| struct archive *a, struct archive *, |
| struct archive_entry *); |
| static void excluded_callback(struct archive *, void *, |
| struct archive_entry *); |
| static void report_write(struct bsdtar *, struct archive *, |
| struct archive_entry *, int64_t progress); |
| static void test_for_append(struct bsdtar *); |
| static int metadata_filter(struct archive *, void *, |
| struct archive_entry *); |
| static void write_archive(struct archive *, struct bsdtar *); |
| static void write_entry(struct bsdtar *, struct archive *, |
| struct archive_entry *); |
| static void write_file(struct bsdtar *, struct archive *, |
| struct archive_entry *); |
| static void write_hierarchy(struct bsdtar *, struct archive *, |
| const char *); |
| |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| /* Not a full lseek() emulation, but enough for our needs here. */ |
| static int |
| seek_file(int fd, int64_t offset, int whence) |
| { |
| LARGE_INTEGER distance; |
| (void)whence; /* UNUSED */ |
| distance.QuadPart = offset; |
| return (SetFilePointerEx((HANDLE)_get_osfhandle(fd), |
| distance, NULL, FILE_BEGIN) ? 1 : -1); |
| } |
| #define open _open |
| #define close _close |
| #define read _read |
| #ifdef lseek |
| #undef lseek |
| #endif |
| #define lseek seek_file |
| #endif |
| |
| static void |
| set_writer_options(struct bsdtar *bsdtar, struct archive *a) |
| { |
| const char *writer_options; |
| int r; |
| |
| writer_options = getenv(ENV_WRITER_OPTIONS); |
| if (writer_options != NULL) { |
| size_t module_len = sizeof(IGNORE_WRONG_MODULE_NAME) - 1; |
| size_t opt_len = strlen(writer_options) + 1; |
| char *p; |
| /* Set default write options. */ |
| if ((p = malloc(module_len + opt_len)) == NULL) |
| lafe_errc(1, errno, "Out of memory"); |
| /* Prepend magic code to ignore options for |
| * a format or filters which are not added to |
| * the archive write object. */ |
| memcpy(p, IGNORE_WRONG_MODULE_NAME, module_len); |
| memcpy(p, writer_options, opt_len); |
| r = archive_write_set_options(a, p); |
| free(p); |
| if (r < ARCHIVE_WARN) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| else |
| archive_clear_error(a); |
| } |
| if (ARCHIVE_OK != archive_write_set_options(a, bsdtar->option_options)) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| } |
| |
| static void |
| set_reader_options(struct bsdtar *bsdtar, struct archive *a) |
| { |
| const char *reader_options; |
| int r; |
| |
| (void)bsdtar; /* UNUSED */ |
| |
| reader_options = getenv(ENV_READER_OPTIONS); |
| if (reader_options != NULL) { |
| size_t module_len = sizeof(IGNORE_WRONG_MODULE_NAME) - 1; |
| size_t opt_len = strlen(reader_options) + 1; |
| char *p; |
| /* Set default write options. */ |
| if ((p = malloc(module_len + opt_len)) == NULL) |
| if (p == NULL) |
| lafe_errc(1, errno, "Out of memory"); |
| /* Prepend magic code to ignore options for |
| * a format or filters which are not added to |
| * the archive write object. */ |
| memcpy(p, IGNORE_WRONG_MODULE_NAME, module_len); |
| memcpy(p, reader_options, opt_len); |
| r = archive_read_set_options(a, p); |
| free(p); |
| if (r < ARCHIVE_WARN) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| else |
| archive_clear_error(a); |
| } |
| } |
| |
| void |
| tar_mode_c(struct bsdtar *bsdtar) |
| { |
| struct archive *a; |
| const void *filter_name; |
| int r; |
| |
| if (*bsdtar->argv == NULL && bsdtar->names_from_file == NULL) |
| lafe_errc(1, 0, "no files or directories specified"); |
| |
| a = archive_write_new(); |
| |
| /* Support any format that the library supports. */ |
| if (cset_get_format(bsdtar->cset) == NULL) { |
| r = archive_write_set_format_pax_restricted(a); |
| cset_set_format(bsdtar->cset, "pax restricted"); |
| } else { |
| r = archive_write_set_format_by_name(a, |
| cset_get_format(bsdtar->cset)); |
| } |
| if (r != ARCHIVE_OK) { |
| fprintf(stderr, "Can't use format %s: %s\n", |
| cset_get_format(bsdtar->cset), |
| archive_error_string(a)); |
| usage(); |
| } |
| |
| archive_write_set_bytes_per_block(a, bsdtar->bytes_per_block); |
| archive_write_set_bytes_in_last_block(a, bsdtar->bytes_in_last_block); |
| |
| r = cset_write_add_filters(bsdtar->cset, a, &filter_name); |
| if (r < ARCHIVE_WARN) { |
| lafe_errc(1, 0, "Unsupported compression option --%s", |
| (const char *)filter_name); |
| } |
| |
| set_writer_options(bsdtar, a); |
| if (bsdtar->passphrase != NULL) |
| r = archive_write_set_passphrase(a, bsdtar->passphrase); |
| else |
| r = archive_write_set_passphrase_callback(a, bsdtar, |
| &passphrase_callback); |
| if (r != ARCHIVE_OK) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| if (ARCHIVE_OK != archive_write_open_filename(a, bsdtar->filename)) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| write_archive(a, bsdtar); |
| } |
| |
| /* |
| * Same as 'c', except we only support tar or empty formats in |
| * uncompressed files on disk. |
| */ |
| void |
| tar_mode_r(struct bsdtar *bsdtar) |
| { |
| int64_t end_offset; |
| int format; |
| struct archive *a; |
| struct archive_entry *entry; |
| int r; |
| |
| /* Sanity-test some arguments and the file. */ |
| test_for_append(bsdtar); |
| |
| format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED; |
| |
| #if defined(__BORLANDC__) |
| bsdtar->fd = open(bsdtar->filename, O_RDWR | O_CREAT | O_BINARY); |
| #else |
| bsdtar->fd = open(bsdtar->filename, O_RDWR | O_CREAT | O_BINARY, 0666); |
| #endif |
| if (bsdtar->fd < 0) |
| lafe_errc(1, errno, |
| "Cannot open %s", bsdtar->filename); |
| |
| a = archive_read_new(); |
| archive_read_support_filter_all(a); |
| archive_read_support_format_empty(a); |
| archive_read_support_format_tar(a); |
| archive_read_support_format_gnutar(a); |
| set_reader_options(bsdtar, a); |
| r = archive_read_open_fd(a, bsdtar->fd, 10240); |
| if (r != ARCHIVE_OK) |
| lafe_errc(1, archive_errno(a), |
| "Can't read archive %s: %s", bsdtar->filename, |
| archive_error_string(a)); |
| while (0 == archive_read_next_header(a, &entry)) { |
| if (archive_filter_code(a, 0) != ARCHIVE_FILTER_NONE) { |
| archive_read_free(a); |
| close(bsdtar->fd); |
| lafe_errc(1, 0, |
| "Cannot append to compressed archive."); |
| } |
| /* Keep going until we hit end-of-archive */ |
| format = archive_format(a); |
| } |
| |
| end_offset = archive_read_header_position(a); |
| archive_read_free(a); |
| |
| /* Re-open archive for writing */ |
| a = archive_write_new(); |
| /* |
| * Set the format to be used for writing. To allow people to |
| * extend empty files, we need to allow them to specify the format, |
| * which opens the possibility that they will specify a format that |
| * doesn't match the existing format. Hence, the following bit |
| * of arcane ugliness. |
| */ |
| |
| if (cset_get_format(bsdtar->cset) != NULL) { |
| /* If the user requested a format, use that, but ... */ |
| archive_write_set_format_by_name(a, |
| cset_get_format(bsdtar->cset)); |
| /* ... complain if it's not compatible. */ |
| format &= ARCHIVE_FORMAT_BASE_MASK; |
| if (format != (int)(archive_format(a) & ARCHIVE_FORMAT_BASE_MASK) |
| && format != ARCHIVE_FORMAT_EMPTY) { |
| lafe_errc(1, 0, |
| "Format %s is incompatible with the archive %s.", |
| cset_get_format(bsdtar->cset), bsdtar->filename); |
| } |
| } else { |
| /* |
| * Just preserve the current format, with a little care |
| * for formats that libarchive can't write. |
| */ |
| if (format == ARCHIVE_FORMAT_EMPTY) |
| format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED; |
| archive_write_set_format(a, format); |
| } |
| if (lseek(bsdtar->fd, end_offset, SEEK_SET) < 0) |
| lafe_errc(1, errno, "Could not seek to archive end"); |
| set_writer_options(bsdtar, a); |
| if (ARCHIVE_OK != archive_write_open_fd(a, bsdtar->fd)) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| |
| write_archive(a, bsdtar); /* XXX check return val XXX */ |
| |
| close(bsdtar->fd); |
| bsdtar->fd = -1; |
| } |
| |
| void |
| tar_mode_u(struct bsdtar *bsdtar) |
| { |
| int64_t end_offset; |
| struct archive *a; |
| struct archive_entry *entry; |
| int format; |
| struct archive_dir_entry *p; |
| struct archive_dir archive_dir; |
| |
| bsdtar->archive_dir = &archive_dir; |
| memset(&archive_dir, 0, sizeof(archive_dir)); |
| |
| format = ARCHIVE_FORMAT_TAR_PAX_RESTRICTED; |
| |
| /* Sanity-test some arguments and the file. */ |
| test_for_append(bsdtar); |
| |
| bsdtar->fd = open(bsdtar->filename, O_RDWR | O_BINARY); |
| if (bsdtar->fd < 0) |
| lafe_errc(1, errno, |
| "Cannot open %s", bsdtar->filename); |
| |
| a = archive_read_new(); |
| archive_read_support_filter_all(a); |
| archive_read_support_format_tar(a); |
| archive_read_support_format_gnutar(a); |
| set_reader_options(bsdtar, a); |
| if (archive_read_open_fd(a, bsdtar->fd, bsdtar->bytes_per_block) |
| != ARCHIVE_OK) { |
| lafe_errc(1, 0, |
| "Can't open %s: %s", bsdtar->filename, |
| archive_error_string(a)); |
| } |
| |
| /* Build a list of all entries and their recorded mod times. */ |
| while (0 == archive_read_next_header(a, &entry)) { |
| if (archive_filter_code(a, 0) != ARCHIVE_FILTER_NONE) { |
| archive_read_free(a); |
| close(bsdtar->fd); |
| lafe_errc(1, 0, |
| "Cannot append to compressed archive."); |
| } |
| if (archive_match_exclude_entry(bsdtar->matching, |
| ARCHIVE_MATCH_MTIME | ARCHIVE_MATCH_OLDER | |
| ARCHIVE_MATCH_EQUAL, entry) != ARCHIVE_OK) |
| lafe_errc(1, 0, "Error : %s", |
| archive_error_string(bsdtar->matching)); |
| /* Record the last format determination we see */ |
| format = archive_format(a); |
| /* Keep going until we hit end-of-archive */ |
| } |
| |
| end_offset = archive_read_header_position(a); |
| archive_read_free(a); |
| |
| /* Re-open archive for writing. */ |
| a = archive_write_new(); |
| /* |
| * Set format to same one auto-detected above. |
| */ |
| archive_write_set_format(a, format); |
| archive_write_set_bytes_per_block(a, bsdtar->bytes_per_block); |
| archive_write_set_bytes_in_last_block(a, bsdtar->bytes_in_last_block); |
| |
| if (lseek(bsdtar->fd, end_offset, SEEK_SET) < 0) |
| lafe_errc(1, errno, "Could not seek to archive end"); |
| set_writer_options(bsdtar, a); |
| if (ARCHIVE_OK != archive_write_open_fd(a, bsdtar->fd)) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| |
| write_archive(a, bsdtar); |
| |
| close(bsdtar->fd); |
| bsdtar->fd = -1; |
| |
| while (bsdtar->archive_dir->head != NULL) { |
| p = bsdtar->archive_dir->head->next; |
| free(bsdtar->archive_dir->head->name); |
| free(bsdtar->archive_dir->head); |
| bsdtar->archive_dir->head = p; |
| } |
| bsdtar->archive_dir->tail = NULL; |
| } |
| |
| |
| /* |
| * Write user-specified files/dirs to opened archive. |
| */ |
| static void |
| write_archive(struct archive *a, struct bsdtar *bsdtar) |
| { |
| const char *arg; |
| struct archive_entry *entry, *sparse_entry; |
| |
| /* Choose a suitable copy buffer size */ |
| bsdtar->buff_size = 64 * 1024; |
| while (bsdtar->buff_size < (size_t)bsdtar->bytes_per_block) |
| bsdtar->buff_size *= 2; |
| /* Try to compensate for space we'll lose to alignment. */ |
| bsdtar->buff_size += 16 * 1024; |
| |
| /* Allocate a buffer for file data. */ |
| if ((bsdtar->buff = malloc(bsdtar->buff_size)) == NULL) |
| lafe_errc(1, 0, "cannot allocate memory"); |
| |
| if ((bsdtar->resolver = archive_entry_linkresolver_new()) == NULL) |
| lafe_errc(1, 0, "cannot create link resolver"); |
| archive_entry_linkresolver_set_strategy(bsdtar->resolver, |
| archive_format(a)); |
| |
| /* Create a read_disk object. */ |
| if ((bsdtar->diskreader = archive_read_disk_new()) == NULL) |
| lafe_errc(1, 0, "Cannot create read_disk object"); |
| /* Tell the read_disk how handle symlink. */ |
| switch (bsdtar->symlink_mode) { |
| case 'H': |
| archive_read_disk_set_symlink_hybrid(bsdtar->diskreader); |
| break; |
| case 'L': |
| archive_read_disk_set_symlink_logical(bsdtar->diskreader); |
| break; |
| default: |
| archive_read_disk_set_symlink_physical(bsdtar->diskreader); |
| break; |
| } |
| /* Register entry filters. */ |
| archive_read_disk_set_matching(bsdtar->diskreader, |
| bsdtar->matching, excluded_callback, bsdtar); |
| archive_read_disk_set_metadata_filter_callback( |
| bsdtar->diskreader, metadata_filter, bsdtar); |
| /* Set the behavior of archive_read_disk. */ |
| archive_read_disk_set_behavior(bsdtar->diskreader, |
| bsdtar->readdisk_flags); |
| archive_read_disk_set_standard_lookup(bsdtar->diskreader); |
| |
| if (bsdtar->names_from_file != NULL) |
| archive_names_from_file(bsdtar, a); |
| |
| while (*bsdtar->argv) { |
| arg = *bsdtar->argv; |
| if (arg[0] == '-' && arg[1] == 'C') { |
| arg += 2; |
| if (*arg == '\0') { |
| bsdtar->argv++; |
| arg = *bsdtar->argv; |
| if (arg == NULL) { |
| lafe_warnc(0, "%s", |
| "Missing argument for -C"); |
| bsdtar->return_value = 1; |
| goto cleanup; |
| } |
| if (*arg == '\0') { |
| lafe_warnc(0, |
| "Meaningless argument for -C: ''"); |
| bsdtar->return_value = 1; |
| goto cleanup; |
| } |
| } |
| set_chdir(bsdtar, arg); |
| } else { |
| if (*arg != '/' && (arg[0] != '@' || arg[1] != '/')) |
| do_chdir(bsdtar); /* Handle a deferred -C */ |
| if (*arg == '@') { |
| if (append_archive_filename(bsdtar, a, |
| arg + 1) != 0) |
| break; |
| } else |
| write_hierarchy(bsdtar, a, arg); |
| } |
| bsdtar->argv++; |
| } |
| |
| archive_read_disk_set_matching(bsdtar->diskreader, NULL, NULL, NULL); |
| archive_read_disk_set_metadata_filter_callback( |
| bsdtar->diskreader, NULL, NULL); |
| entry = NULL; |
| archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry); |
| while (entry != NULL) { |
| int r; |
| struct archive_entry *entry2; |
| struct archive *disk = bsdtar->diskreader; |
| |
| /* |
| * This tricky code here is to correctly read the contents |
| * of the entry because the disk reader bsdtar->diskreader |
| * is pointing at does not have any information about the |
| * entry by this time and using archive_read_data_block() |
| * with the disk reader consequently must fail. And we |
| * have to re-open the entry to read the contents. |
| */ |
| /* TODO: Work with -C option as well. */ |
| r = archive_read_disk_open(disk, |
| archive_entry_sourcepath(entry)); |
| if (r != ARCHIVE_OK) { |
| lafe_warnc(archive_errno(disk), |
| "%s", archive_error_string(disk)); |
| bsdtar->return_value = 1; |
| archive_entry_free(entry); |
| continue; |
| } |
| |
| /* |
| * Invoke archive_read_next_header2() to work |
| * archive_read_data_block(), which is called via write_file(), |
| * without failure. |
| */ |
| entry2 = archive_entry_new(); |
| r = archive_read_next_header2(disk, entry2); |
| archive_entry_free(entry2); |
| if (r != ARCHIVE_OK) { |
| lafe_warnc(archive_errno(disk), |
| "%s", archive_error_string(disk)); |
| if (r == ARCHIVE_FATAL) |
| bsdtar->return_value = 1; |
| else |
| archive_read_close(disk); |
| archive_entry_free(entry); |
| continue; |
| } |
| |
| write_file(bsdtar, a, entry); |
| archive_entry_free(entry); |
| archive_read_close(disk); |
| entry = NULL; |
| archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry); |
| } |
| |
| if (archive_write_close(a)) { |
| lafe_warnc(0, "%s", archive_error_string(a)); |
| bsdtar->return_value = 1; |
| } |
| |
| cleanup: |
| /* Free file data buffer. */ |
| free(bsdtar->buff); |
| archive_entry_linkresolver_free(bsdtar->resolver); |
| bsdtar->resolver = NULL; |
| archive_read_free(bsdtar->diskreader); |
| bsdtar->diskreader = NULL; |
| |
| if (bsdtar->flags & OPTFLAG_TOTALS) { |
| fprintf(stderr, "Total bytes written: %s\n", |
| tar_i64toa(archive_filter_bytes(a, -1))); |
| } |
| |
| archive_write_free(a); |
| } |
| |
| /* |
| * Archive names specified in file. |
| * |
| * Unless --null was specified, a line containing exactly "-C" will |
| * cause the next line to be a directory to pass to chdir(). If |
| * --null is specified, then a line "-C" is just another filename. |
| */ |
| static void |
| archive_names_from_file(struct bsdtar *bsdtar, struct archive *a) |
| { |
| struct lafe_line_reader *lr; |
| const char *line; |
| |
| bsdtar->next_line_is_dir = 0; |
| |
| lr = lafe_line_reader(bsdtar->names_from_file, |
| (bsdtar->flags & OPTFLAG_NULL)); |
| while ((line = lafe_line_reader_next(lr)) != NULL) { |
| if (bsdtar->next_line_is_dir) { |
| if (*line != '\0') |
| set_chdir(bsdtar, line); |
| else { |
| lafe_warnc(0, |
| "Meaningless argument for -C: ''"); |
| bsdtar->return_value = 1; |
| } |
| bsdtar->next_line_is_dir = 0; |
| } else if (((bsdtar->flags & OPTFLAG_NULL) == 0) && |
| strcmp(line, "-C") == 0) |
| bsdtar->next_line_is_dir = 1; |
| else { |
| if (*line != '/') |
| do_chdir(bsdtar); /* Handle a deferred -C */ |
| write_hierarchy(bsdtar, a, line); |
| } |
| } |
| lafe_line_reader_free(lr); |
| if (bsdtar->next_line_is_dir) |
| lafe_errc(1, errno, |
| "Unexpected end of filename list; " |
| "directory expected after -C"); |
| } |
| |
| /* |
| * Copy from specified archive to current archive. Returns non-zero |
| * for write errors (which force us to terminate the entire archiving |
| * operation). If there are errors reading the input archive, we set |
| * bsdtar->return_value but return zero, so the overall archiving |
| * operation will complete and return non-zero. |
| */ |
| static int |
| append_archive_filename(struct bsdtar *bsdtar, struct archive *a, |
| const char *raw_filename) |
| { |
| struct archive *ina; |
| const char *filename = raw_filename; |
| int rc; |
| |
| if (strcmp(filename, "-") == 0) |
| filename = NULL; /* Library uses NULL for stdio. */ |
| |
| ina = archive_read_new(); |
| archive_read_support_format_all(ina); |
| archive_read_support_filter_all(ina); |
| set_reader_options(bsdtar, ina); |
| archive_read_set_options(ina, "mtree:checkfs"); |
| if (bsdtar->passphrase != NULL) |
| rc = archive_read_add_passphrase(a, bsdtar->passphrase); |
| else |
| rc = archive_read_set_passphrase_callback(ina, bsdtar, |
| &passphrase_callback); |
| if (rc != ARCHIVE_OK) |
| lafe_errc(1, 0, "%s", archive_error_string(a)); |
| if (archive_read_open_filename(ina, filename, |
| bsdtar->bytes_per_block)) { |
| lafe_warnc(0, "%s", archive_error_string(ina)); |
| bsdtar->return_value = 1; |
| return (0); |
| } |
| |
| rc = append_archive(bsdtar, a, ina); |
| |
| if (rc != ARCHIVE_OK) { |
| lafe_warnc(0, "Error reading archive %s: %s", |
| raw_filename, archive_error_string(ina)); |
| bsdtar->return_value = 1; |
| } |
| archive_read_free(ina); |
| |
| return (rc); |
| } |
| |
| static int |
| append_archive(struct bsdtar *bsdtar, struct archive *a, struct archive *ina) |
| { |
| struct archive_entry *in_entry; |
| int e; |
| |
| while (ARCHIVE_OK == (e = archive_read_next_header(ina, &in_entry))) { |
| if (archive_match_excluded(bsdtar->matching, in_entry)) |
| continue; |
| if ((bsdtar->flags & OPTFLAG_INTERACTIVE) && |
| !yes("copy '%s'", archive_entry_pathname(in_entry))) |
| continue; |
| if (bsdtar->verbose > 1) { |
| safe_fprintf(stderr, "a "); |
| list_item_verbose(bsdtar, stderr, in_entry); |
| } else if (bsdtar->verbose > 0) |
| safe_fprintf(stderr, "a %s", |
| archive_entry_pathname(in_entry)); |
| if (need_report()) |
| report_write(bsdtar, a, in_entry, 0); |
| |
| e = archive_write_header(a, in_entry); |
| if (e != ARCHIVE_OK) { |
| if (!bsdtar->verbose) |
| lafe_warnc(0, "%s: %s", |
| archive_entry_pathname(in_entry), |
| archive_error_string(a)); |
| else |
| fprintf(stderr, ": %s", archive_error_string(a)); |
| } |
| if (e == ARCHIVE_FATAL) |
| exit(1); |
| |
| if (e >= ARCHIVE_WARN) { |
| if (archive_entry_size(in_entry) == 0) |
| archive_read_data_skip(ina); |
| else if (copy_file_data_block(bsdtar, a, ina, in_entry)) |
| exit(1); |
| } |
| |
| if (bsdtar->verbose) |
| fprintf(stderr, "\n"); |
| } |
| |
| return (e == ARCHIVE_EOF ? ARCHIVE_OK : e); |
| } |
| |
| /* Helper function to copy file to archive. */ |
| static int |
| copy_file_data_block(struct bsdtar *bsdtar, struct archive *a, |
| struct archive *in_a, struct archive_entry *entry) |
| { |
| size_t bytes_read; |
| ssize_t bytes_written; |
| int64_t offset, progress = 0; |
| char *null_buff = NULL; |
| const void *buff; |
| int r; |
| |
| while ((r = archive_read_data_block(in_a, &buff, |
| &bytes_read, &offset)) == ARCHIVE_OK) { |
| if (need_report()) |
| report_write(bsdtar, a, entry, progress); |
| |
| if (offset > progress) { |
| int64_t sparse = offset - progress; |
| size_t ns; |
| |
| if (null_buff == NULL) { |
| null_buff = bsdtar->buff; |
| memset(null_buff, 0, bsdtar->buff_size); |
| } |
| |
| while (sparse > 0) { |
| if (sparse > (int64_t)bsdtar->buff_size) |
| ns = bsdtar->buff_size; |
| else |
| ns = (size_t)sparse; |
| bytes_written = |
| archive_write_data(a, null_buff, ns); |
| if (bytes_written < 0) { |
| /* Write failed; this is bad */ |
| lafe_warnc(0, "%s", |
| archive_error_string(a)); |
| return (-1); |
| } |
| if ((size_t)bytes_written < ns) { |
| /* Write was truncated; warn but |
| * continue. */ |
| lafe_warnc(0, |
| "%s: Truncated write; file may " |
| "have grown while being archived.", |
| archive_entry_pathname(entry)); |
| return (0); |
| } |
| progress += bytes_written; |
| sparse -= bytes_written; |
| } |
| } |
| |
| bytes_written = archive_write_data(a, buff, bytes_read); |
| if (bytes_written < 0) { |
| /* Write failed; this is bad */ |
| lafe_warnc(0, "%s", archive_error_string(a)); |
| return (-1); |
| } |
| if ((size_t)bytes_written < bytes_read) { |
| /* Write was truncated; warn but continue. */ |
| lafe_warnc(0, |
| "%s: Truncated write; file may have grown " |
| "while being archived.", |
| archive_entry_pathname(entry)); |
| return (0); |
| } |
| progress += bytes_written; |
| } |
| if (r < ARCHIVE_WARN) { |
| lafe_warnc(archive_errno(a), "%s", archive_error_string(a)); |
| return (-1); |
| } |
| return (0); |
| } |
| |
| static void |
| excluded_callback(struct archive *a, void *_data, struct archive_entry *entry) |
| { |
| struct bsdtar *bsdtar = (struct bsdtar *)_data; |
| |
| if (bsdtar->flags & OPTFLAG_NO_SUBDIRS) |
| return; |
| if (!archive_read_disk_can_descend(a)) |
| return; |
| if ((bsdtar->flags & OPTFLAG_INTERACTIVE) && |
| !yes("add '%s'", archive_entry_pathname(entry))) |
| return; |
| archive_read_disk_descend(a); |
| } |
| |
| static int |
| metadata_filter(struct archive *a, void *_data, struct archive_entry *entry) |
| { |
| struct bsdtar *bsdtar = (struct bsdtar *)_data; |
| |
| /* XXX TODO: check whether this filesystem is |
| * synthetic and/or local. Add a new |
| * --local-only option to skip non-local |
| * filesystems. Skip synthetic filesystems |
| * regardless. |
| * |
| * The results should be cached, since |
| * tree.c doesn't usually visit a directory |
| * and the directory contents together. A simple |
| * move-to-front list should perform quite well. |
| * |
| * Use archive_read_disk_current_filesystem_is_remote(). |
| */ |
| |
| /* |
| * If the user vetoes this file/directory, skip it. |
| * We want this to be fairly late; if some other |
| * check would veto this file, we shouldn't bother |
| * the user with it. |
| */ |
| if ((bsdtar->flags & OPTFLAG_INTERACTIVE) && |
| !yes("add '%s'", archive_entry_pathname(entry))) |
| return (0); |
| |
| /* Note: if user vetoes, we won't descend. */ |
| if (((bsdtar->flags & OPTFLAG_NO_SUBDIRS) == 0) && |
| archive_read_disk_can_descend(a)) |
| archive_read_disk_descend(a); |
| |
| return (1); |
| } |
| |
| /* |
| * Add the file or dir hierarchy named by 'path' to the archive |
| */ |
| static void |
| write_hierarchy(struct bsdtar *bsdtar, struct archive *a, const char *path) |
| { |
| struct archive *disk = bsdtar->diskreader; |
| struct archive_entry *entry = NULL, *spare_entry = NULL; |
| int r; |
| |
| r = archive_read_disk_open(disk, path); |
| if (r != ARCHIVE_OK) { |
| lafe_warnc(archive_errno(disk), |
| "%s", archive_error_string(disk)); |
| bsdtar->return_value = 1; |
| return; |
| } |
| bsdtar->first_fs = -1; |
| |
| for (;;) { |
| archive_entry_free(entry); |
| entry = archive_entry_new(); |
| r = archive_read_next_header2(disk, entry); |
| if (r == ARCHIVE_EOF) |
| break; |
| else if (r != ARCHIVE_OK) { |
| lafe_warnc(archive_errno(disk), |
| "%s", archive_error_string(disk)); |
| if (r == ARCHIVE_FATAL || r == ARCHIVE_FAILED) { |
| bsdtar->return_value = 1; |
| archive_entry_free(entry); |
| archive_read_close(disk); |
| return; |
| } else if (r < ARCHIVE_WARN) |
| continue; |
| } |
| |
| if (bsdtar->uid >= 0) { |
| archive_entry_set_uid(entry, bsdtar->uid); |
| if (!bsdtar->uname) |
| archive_entry_set_uname(entry, |
| archive_read_disk_uname(bsdtar->diskreader, |
| bsdtar->uid)); |
| } |
| if (bsdtar->gid >= 0) { |
| archive_entry_set_gid(entry, bsdtar->gid); |
| if (!bsdtar->gname) |
| archive_entry_set_gname(entry, |
| archive_read_disk_gname(bsdtar->diskreader, |
| bsdtar->gid)); |
| } |
| if (bsdtar->uname) |
| archive_entry_set_uname(entry, bsdtar->uname); |
| if (bsdtar->gname) |
| archive_entry_set_gname(entry, bsdtar->gname); |
| |
| /* |
| * Rewrite the pathname to be archived. If rewrite |
| * fails, skip the entry. |
| */ |
| if (edit_pathname(bsdtar, entry)) |
| continue; |
| |
| /* Display entry as we process it. */ |
| if (bsdtar->verbose > 1) { |
| safe_fprintf(stderr, "a "); |
| list_item_verbose(bsdtar, stderr, entry); |
| } else if (bsdtar->verbose > 0) { |
| /* This format is required by SUSv2. */ |
| safe_fprintf(stderr, "a %s", |
| archive_entry_pathname(entry)); |
| } |
| |
| /* Non-regular files get archived with zero size. */ |
| if (archive_entry_filetype(entry) != AE_IFREG) |
| archive_entry_set_size(entry, 0); |
| |
| archive_entry_linkify(bsdtar->resolver, &entry, &spare_entry); |
| |
| while (entry != NULL) { |
| write_file(bsdtar, a, entry); |
| archive_entry_free(entry); |
| entry = spare_entry; |
| spare_entry = NULL; |
| } |
| |
| if (bsdtar->verbose) |
| fprintf(stderr, "\n"); |
| } |
| archive_entry_free(entry); |
| archive_read_close(disk); |
| } |
| |
| /* |
| * Write a single file (or directory or other filesystem object) to |
| * the archive. |
| */ |
| static void |
| write_file(struct bsdtar *bsdtar, struct archive *a, |
| struct archive_entry *entry) |
| { |
| write_entry(bsdtar, a, entry); |
| } |
| |
| /* |
| * Write a single entry to the archive. |
| */ |
| static void |
| write_entry(struct bsdtar *bsdtar, struct archive *a, |
| struct archive_entry *entry) |
| { |
| int e; |
| |
| e = archive_write_header(a, entry); |
| if (e != ARCHIVE_OK) { |
| if (bsdtar->verbose > 1) { |
| safe_fprintf(stderr, "a "); |
| list_item_verbose(bsdtar, stderr, entry); |
| lafe_warnc(0, ": %s", archive_error_string(a)); |
| } else if (bsdtar->verbose > 0) { |
| lafe_warnc(0, "%s: %s", |
| archive_entry_pathname(entry), |
| archive_error_string(a)); |
| } else |
| fprintf(stderr, ": %s", archive_error_string(a)); |
| } |
| |
| if (e == ARCHIVE_FATAL) |
| exit(1); |
| |
| /* |
| * If we opened a file earlier, write it out now. Note that |
| * the format handler might have reset the size field to zero |
| * to inform us that the archive body won't get stored. In |
| * that case, just skip the write. |
| */ |
| if (e >= ARCHIVE_WARN && archive_entry_size(entry) > 0) { |
| if (copy_file_data_block(bsdtar, a, bsdtar->diskreader, entry)) |
| exit(1); |
| } |
| } |
| |
| static void |
| report_write(struct bsdtar *bsdtar, struct archive *a, |
| struct archive_entry *entry, int64_t progress) |
| { |
| uint64_t comp, uncomp; |
| int compression; |
| |
| if (bsdtar->verbose) |
| fprintf(stderr, "\n"); |
| comp = archive_filter_bytes(a, -1); |
| uncomp = archive_filter_bytes(a, 0); |
| fprintf(stderr, "In: %d files, %s bytes;", |
| archive_file_count(a), tar_i64toa(uncomp)); |
| if (comp >= uncomp) |
| compression = 0; |
| else |
| compression = (int)((uncomp - comp) * 100 / uncomp); |
| fprintf(stderr, |
| " Out: %s bytes, compression %d%%\n", |
| tar_i64toa(comp), compression); |
| /* Can't have two calls to tar_i64toa() pending, so split the output. */ |
| safe_fprintf(stderr, "Current: %s (%s", |
| archive_entry_pathname(entry), |
| tar_i64toa(progress)); |
| fprintf(stderr, "/%s bytes)\n", |
| tar_i64toa(archive_entry_size(entry))); |
| } |
| |
| static void |
| test_for_append(struct bsdtar *bsdtar) |
| { |
| struct stat s; |
| |
| if (*bsdtar->argv == NULL && bsdtar->names_from_file == NULL) |
| lafe_errc(1, 0, "no files or directories specified"); |
| if (bsdtar->filename == NULL) |
| lafe_errc(1, 0, "Cannot append to stdout."); |
| |
| if (stat(bsdtar->filename, &s) != 0) |
| return; |
| |
| if (!S_ISREG(s.st_mode) && !S_ISBLK(s.st_mode)) |
| lafe_errc(1, 0, |
| "Cannot append to %s: not a regular file.", |
| bsdtar->filename); |
| |
| /* Is this an appropriate check here on Windows? */ |
| /* |
| if (GetFileType(handle) != FILE_TYPE_DISK) |
| lafe_errc(1, 0, "Cannot append"); |
| */ |
| |
| } |