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-rw-r--r--lib/libarchive/test/test_tar_large.c312
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diff --git a/lib/libarchive/test/test_tar_large.c b/lib/libarchive/test/test_tar_large.c
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-/*-
- * 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 "test.h"
-__FBSDID("$FreeBSD$");
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-
-/*
- * This is a somewhat tricky test that verifies the ability to
- * write and read very large entries to tar archives. It
- * writes entries from 2GB up to 1TB to an archive in memory.
- * The memory storage here carefully avoids actually storing
- * any part of the file bodies, so it runs very quickly and requires
- * very little memory. If you're willing to wait a few minutes,
- * you should be able to exercise petabyte entries with this code.
- */
-
-/*
- * Each file is built up by duplicating the following block.
- */
-static size_t filedatasize;
-static void *filedata;
-
-/*
- * We store the archive as blocks of data generated by libarchive,
- * each possibly followed by bytes of file data.
- */
-struct memblock {
- struct memblock *next;
- size_t size;
- void *buff;
- int64_t filebytes;
-};
-
-/*
- * The total memory store is just a list of memblocks plus
- * some accounting overhead.
- */
-struct memdata {
- int64_t filebytes;
- void *buff;
- struct memblock *first;
- struct memblock *last;
-};
-
-/* The following size definitions simplify things below. */
-#define KB ((int64_t)1024)
-#define MB ((int64_t)1024 * KB)
-#define GB ((int64_t)1024 * MB)
-#define TB ((int64_t)1024 * GB)
-
-#if ARCHIVE_VERSION_NUMBER < 2000000
-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);
-static ssize_t memory_write(struct archive *, void *, const void *, size_t);
-
-
-static ssize_t
-memory_write(struct archive *a, void *_private, const void *buff, size_t size)
-{
- struct memdata *private = _private;
- struct memblock *block;
-
- (void)a;
-
- /*
- * Since libarchive tries to behave in a zero-copy manner, if
- * you give a pointer to filedata to the library, a pointer
- * into that data will (usually) pop out here. This way, we
- * can tell the difference between filedata and library header
- * and metadata.
- */
- if ((const char *)filedata <= (const char *)buff
- && (const char *)buff < (const char *)filedata + filedatasize) {
- /* We don't need to store a block of file data. */
- private->last->filebytes += (int64_t)size;
- } else {
- /* Yes, we're assuming the very first write is metadata. */
- /* It's header or metadata, copy and save it. */
- block = (struct memblock *)malloc(sizeof(*block));
- memset(block, 0, sizeof(*block));
- block->size = size;
- block->buff = malloc(size);
- memcpy(block->buff, buff, size);
- if (private->last == NULL) {
- private->first = private->last = block;
- } else {
- private->last->next = block;
- private->last = block;
- }
- block->next = NULL;
- }
- return ((long)size);
-}
-
-static ssize_t
-memory_read(struct archive *a, void *_private, const void **buff)
-{
- struct memdata *private = _private;
- struct memblock *block;
- ssize_t size;
-
- (void)a;
-
- free(private->buff);
- private->buff = NULL;
- if (private->first == NULL) {
- private->last = NULL;
- return (ARCHIVE_EOF);
- }
- if (private->filebytes > 0) {
- /*
- * We're returning file bytes, simulate it by
- * passing blocks from the template data.
- */
- if (private->filebytes > (int64_t)filedatasize)
- size = (ssize_t)filedatasize;
- else
- size = (ssize_t)private->filebytes;
- private->filebytes -= size;
- *buff = filedata;
- } else {
- /*
- * We need to get some real data to return.
- */
- block = private->first;
- private->first = block->next;
- size = (ssize_t)block->size;
- if (block->buff != NULL) {
- private->buff = block->buff;
- *buff = block->buff;
- } else {
- private->buff = NULL;
- *buff = filedata;
- }
- private->filebytes = block->filebytes;
- free(block);
- }
- return (size);
-}
-
-
-#if ARCHIVE_VERSION_NUMBER < 2000000
-static ssize_t
-memory_read_skip(struct archive *a, void *private, size_t skip)
-{
- (void)a; /* UNUSED */
- (void)private; /* UNUSED */
- (void)skip; /* UNUSED */
- return (0);
-}
-#else
-static off_t
-memory_read_skip(struct archive *a, void *_private, off_t skip)
-{
- struct memdata *private = _private;
-
- (void)a;
-
- if (private->first == NULL) {
- private->last = NULL;
- return (0);
- }
- if (private->filebytes > 0) {
- if (private->filebytes < skip)
- skip = (off_t)private->filebytes;
- private->filebytes -= skip;
- } else {
- skip = 0;
- }
- return (skip);
-}
-#endif
-
-DEFINE_TEST(test_tar_large)
-{
- /* The sizes of the entries we're going to generate. */
- static int64_t tests[] = {
- /* Test for 32-bit signed overflow. */
- 2 * GB - 1, 2 * GB, 2 * GB + 1,
- /* Test for 32-bit unsigned overflow. */
- 4 * GB - 1, 4 * GB, 4 * GB + 1,
- /* 8GB is the "official" max for ustar. */
- 8 * GB - 1, 8 * GB, 8 * GB + 1,
- /* Bend ustar a tad and you can get 64GB (12 octal digits). */
- 64 * GB - 1, 64 * GB,
- /* And larger entries that require non-ustar extensions. */
- 256 * GB, 1 * TB, 0 };
- int i;
- char namebuff[64];
- struct memdata memdata;
- struct archive_entry *ae;
- struct archive *a;
- int64_t filesize;
- size_t writesize;
-
- filedatasize = (size_t)(1 * MB);
- filedata = malloc(filedatasize);
- memset(filedata, 0xAA, filedatasize);
- memset(&memdata, 0, sizeof(memdata));
-
- /*
- * Open an archive for writing.
- */
- a = archive_write_new();
- archive_write_set_format_pax_restricted(a);
- archive_write_set_bytes_per_block(a, 0); /* No buffering. */
- archive_write_open(a, &memdata, NULL, memory_write, NULL);
-
- /*
- * Write a series of large files to it.
- */
- for (i = 0; tests[i] != 0; i++) {
- assert((ae = archive_entry_new()) != NULL);
- sprintf(namebuff, "file_%d", i);
- archive_entry_copy_pathname(ae, namebuff);
- archive_entry_set_mode(ae, S_IFREG | 0755);
- filesize = tests[i];
-
- archive_entry_set_size(ae, filesize);
-
- assertA(0 == archive_write_header(a, ae));
- archive_entry_free(ae);
-
- /*
- * Write the actual data to the archive.
- */
- while (filesize > 0) {
- writesize = filedatasize;
- if ((int64_t)writesize > filesize)
- writesize = (size_t)filesize;
- assertA((int)writesize
- == archive_write_data(a, filedata, writesize));
- filesize -= writesize;
- }
- }
-
- assert((ae = archive_entry_new()) != NULL);
- archive_entry_copy_pathname(ae, "lastfile");
- archive_entry_set_mode(ae, S_IFREG | 0755);
- assertA(0 == archive_write_header(a, ae));
- archive_entry_free(ae);
-
-
- /* Close out the archive. */
- assertA(0 == archive_write_close(a));
-#if ARCHIVE_VERSION_NUMBER < 2000000
- archive_write_finish(a);
-#else
- assertA(0 == archive_write_finish(a));
-#endif
-
- /*
- * Open the same archive for reading.
- */
- a = archive_read_new();
- archive_read_support_format_tar(a);
- archive_read_open2(a, &memdata, NULL,
- memory_read, memory_read_skip, NULL);
-
- /*
- * Read entries back.
- */
- for (i = 0; tests[i] > 0; i++) {
- assertEqualIntA(a, 0, archive_read_next_header(a, &ae));
- sprintf(namebuff, "file_%d", i);
- assertEqualString(namebuff, archive_entry_pathname(ae));
- assert(tests[i] == archive_entry_size(ae));
- }
- assertEqualIntA(a, 0, archive_read_next_header(a, &ae));
- assertEqualString("lastfile", archive_entry_pathname(ae));
-
- assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
-
- /* Close out the archive. */
- assertA(0 == archive_read_close(a));
-#if ARCHIVE_VERSION_NUMBER < 2000000
- archive_read_finish(a);
-#else
- assertA(0 == archive_read_finish(a));
-#endif
-
- free(memdata.buff);
- free(filedata);
-}
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