diff options
Diffstat (limited to 'lib/libarchive/archive_read_support_format_raw.c')
| -rw-r--r-- | lib/libarchive/archive_read_support_format_raw.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/lib/libarchive/archive_read_support_format_raw.c b/lib/libarchive/archive_read_support_format_raw.c deleted file mode 100644 index c994a5d..0000000 --- a/lib/libarchive/archive_read_support_format_raw.c +++ /dev/null @@ -1,185 +0,0 @@ -/*- - * Copyright (c) 2003-2009 Tim Kientzle - * 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 "archive_platform.h" -__FBSDID("$FreeBSD$"); - -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#include <stdio.h> -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#include "archive.h" -#include "archive_entry.h" -#include "archive_private.h" -#include "archive_read_private.h" - -struct raw_info { - int64_t offset; /* Current position in the file. */ - int end_of_file; -}; - -static int archive_read_format_raw_bid(struct archive_read *); -static int archive_read_format_raw_cleanup(struct archive_read *); -static int archive_read_format_raw_read_data(struct archive_read *, - const void **, size_t *, off_t *); -static int archive_read_format_raw_read_data_skip(struct archive_read *); -static int archive_read_format_raw_read_header(struct archive_read *, - struct archive_entry *); - -int -archive_read_support_format_raw(struct archive *_a) -{ - struct raw_info *info; - struct archive_read *a = (struct archive_read *)_a; - int r; - - info = (struct raw_info *)calloc(1, sizeof(*info)); - if (info == NULL) { - archive_set_error(&a->archive, ENOMEM, - "Can't allocate raw_info data"); - return (ARCHIVE_FATAL); - } - - r = __archive_read_register_format(a, - info, - "raw", - archive_read_format_raw_bid, - NULL, - archive_read_format_raw_read_header, - archive_read_format_raw_read_data, - archive_read_format_raw_read_data_skip, - archive_read_format_raw_cleanup); - if (r != ARCHIVE_OK) - free(info); - return (r); -} - -/* - * Bid 1 if this is a non-empty file. Anyone who can really support - * this should outbid us, so it should generally be safe to use "raw" - * in conjunction with other formats. But, this could really confuse - * folks if there are bid errors or minor file damage, so we don't - * include "raw" as part of support_format_all(). - */ -static int -archive_read_format_raw_bid(struct archive_read *a) -{ - - if (__archive_read_ahead(a, 1, NULL) == NULL) - return (-1); - return (1); -} - -/* - * Mock up a fake header. - */ -static int -archive_read_format_raw_read_header(struct archive_read *a, - struct archive_entry *entry) -{ - struct raw_info *info; - - info = (struct raw_info *)(a->format->data); - if (info->end_of_file) - return (ARCHIVE_EOF); - - a->archive.archive_format = ARCHIVE_FORMAT_RAW; - a->archive.archive_format_name = "Raw data"; - archive_entry_set_pathname(entry, "data"); - /* XXX should we set mode to mimic a regular file? XXX */ - /* I'm deliberately leaving most fields unset here. */ - return (ARCHIVE_OK); -} - -static int -archive_read_format_raw_read_data(struct archive_read *a, - const void **buff, size_t *size, off_t *offset) -{ - struct raw_info *info; - ssize_t avail; - - info = (struct raw_info *)(a->format->data); - if (info->end_of_file) - return (ARCHIVE_EOF); - - /* Get whatever bytes are immediately available. */ - *buff = __archive_read_ahead(a, 1, &avail); - if (avail > 0) { - /* Consume and return the bytes we just read */ - __archive_read_consume(a, avail); - *size = avail; - *offset = info->offset; - info->offset += *size; - return (ARCHIVE_OK); - } else if (0 == avail) { - /* Record and return end-of-file. */ - info->end_of_file = 1; - *size = 0; - *offset = info->offset; - return (ARCHIVE_EOF); - } else { - /* Record and return an error. */ - *size = 0; - *offset = info->offset; - return (avail); - } -} - -static int -archive_read_format_raw_read_data_skip(struct archive_read *a) -{ - struct raw_info *info; - off_t bytes_skipped; - int64_t request = 1024 * 1024 * 1024UL; /* Skip 1 GB at a time. */ - - info = (struct raw_info *)(a->format->data); - if (info->end_of_file) - return (ARCHIVE_EOF); - info->end_of_file = 1; - - for (;;) { - bytes_skipped = __archive_read_skip_lenient(a, request); - if (bytes_skipped < 0) - return (ARCHIVE_FATAL); - if (bytes_skipped < request) - return (ARCHIVE_OK); - /* We skipped all the bytes we asked for. There might - * be more, so try again. */ - } -} - -static int -archive_read_format_raw_cleanup(struct archive_read *a) -{ - struct raw_info *info; - - info = (struct raw_info *)(a->format->data); - free(info); - a->format->data = NULL; - return (ARCHIVE_OK); -} |
