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Diffstat (limited to 'lib/libarchive/archive_read_open_memory.c')
| -rw-r--r-- | lib/libarchive/archive_read_open_memory.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/lib/libarchive/archive_read_open_memory.c b/lib/libarchive/archive_read_open_memory.c deleted file mode 100644 index 7f52117..0000000 --- a/lib/libarchive/archive_read_open_memory.c +++ /dev/null @@ -1,156 +0,0 @@ -/*- - * Copyright (c) 2003-2007 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("$FreeBSD$"); - -#include <errno.h> -#include <stdlib.h> -#include <string.h> - -#include "archive.h" - -/* - * Glue to read an archive from a block of memory. - * - * This is mostly a huge help in building test harnesses; - * test programs can build archives in memory and read them - * back again without having to mess with files on disk. - */ - -struct read_memory_data { - unsigned char *buffer; - unsigned char *end; - ssize_t read_size; -}; - -static int memory_read_close(struct archive *, void *); -static int memory_read_open(struct archive *, void *); -#if ARCHIVE_API_VERSION < 2 -static ssize_t memory_read_skip(struct archive *, void *, size_t request); -#else -static off_t memory_read_skip(struct archive *, void *, off_t request); -#endif -static ssize_t memory_read(struct archive *, void *, const void **buff); - -int -archive_read_open_memory(struct archive *a, void *buff, size_t size) -{ - return archive_read_open_memory2(a, buff, size, size); -} - -/* - * Don't use _open_memory2() in production code; the archive_read_open_memory() - * version is the one you really want. This is just here so that - * test harnesses can exercise block operations inside the library. - */ -int -archive_read_open_memory2(struct archive *a, void *buff, - size_t size, size_t read_size) -{ - struct read_memory_data *mine; - - mine = (struct read_memory_data *)malloc(sizeof(*mine)); - if (mine == NULL) { - archive_set_error(a, ENOMEM, "No memory"); - return (ARCHIVE_FATAL); - } - memset(mine, 0, sizeof(*mine)); - mine->buffer = (unsigned char *)buff; - mine->end = mine->buffer + size; - mine->read_size = read_size; - return (archive_read_open2(a, mine, memory_read_open, - memory_read, memory_read_skip, memory_read_close)); -} - -/* - * There's nothing to open. - */ -static int -memory_read_open(struct archive *a, void *client_data) -{ - (void)a; /* UNUSED */ - (void)client_data; /* UNUSED */ - return (ARCHIVE_OK); -} - -/* - * This is scary simple: Just advance a pointer. Limiting - * to read_size is not technically necessary, but it exercises - * more of the internal logic when used with a small block size - * in a test harness. Production use should not specify a block - * size; then this is much faster. - */ -static ssize_t -memory_read(struct archive *a, void *client_data, const void **buff) -{ - struct read_memory_data *mine = (struct read_memory_data *)client_data; - ssize_t size; - - (void)a; /* UNUSED */ - *buff = mine->buffer; - size = mine->end - mine->buffer; - if (size > mine->read_size) - size = mine->read_size; - mine->buffer += size; - return (size); -} - -/* - * Advancing is just as simple. Again, this is doing more than - * necessary in order to better exercise internal code when used - * as a test harness. - */ -#if ARCHIVE_API_VERSION < 2 -static ssize_t -memory_read_skip(struct archive *a, void *client_data, size_t skip) -#else -static off_t -memory_read_skip(struct archive *a, void *client_data, off_t skip) -#endif -{ - struct read_memory_data *mine = (struct read_memory_data *)client_data; - - (void)a; /* UNUSED */ - if ((off_t)skip > (off_t)(mine->end - mine->buffer)) - skip = mine->end - mine->buffer; - /* Round down to block size. */ - skip /= mine->read_size; - skip *= mine->read_size; - mine->buffer += skip; - return (skip); -} - -/* - * Close is just cleaning up our one small bit of data. - */ -static int -memory_read_close(struct archive *a, void *client_data) -{ - struct read_memory_data *mine = (struct read_memory_data *)client_data; - (void)a; /* UNUSED */ - free(mine); - return (ARCHIVE_OK); -} |
