IFC to populate initial libarchive-portable tree.

SVN-Revision: 1

1 files changed, 777 insertions, 0 deletions

diff --git a/libarchive/archive_read_support_format_cpio.c b/libarchive/archive_read_support_format_cpio.c
new file mode 100644
index 00000000..2c50abc6
--- /dev/null
+++ b/libarchive/archive_read_support_format_cpio.c
@@ -0,0 +1,777 @@
+/*-
+ * 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: src/lib/libarchive/archive_read_support_format_cpio.c,v 1.26 2008/01/15 04:56:48 kientzle Exp $");
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+/* #include <stdint.h> */ /* See archive_platform.h */
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "archive.h"
+#include "archive_entry.h"
+#include "archive_private.h"
+#include "archive_read_private.h"
+
+struct cpio_bin_header {
+	unsigned char	c_magic[2];
+	unsigned char	c_dev[2];
+	unsigned char	c_ino[2];
+	unsigned char	c_mode[2];
+	unsigned char	c_uid[2];
+	unsigned char	c_gid[2];
+	unsigned char	c_nlink[2];
+	unsigned char	c_rdev[2];
+	unsigned char	c_mtime[4];
+	unsigned char	c_namesize[2];
+	unsigned char	c_filesize[4];
+};
+
+struct cpio_odc_header {
+	char	c_magic[6];
+	char	c_dev[6];
+	char	c_ino[6];
+	char	c_mode[6];
+	char	c_uid[6];
+	char	c_gid[6];
+	char	c_nlink[6];
+	char	c_rdev[6];
+	char	c_mtime[11];
+	char	c_namesize[6];
+	char	c_filesize[11];
+};
+
+struct cpio_newc_header {
+	char	c_magic[6];
+	char	c_ino[8];
+	char	c_mode[8];
+	char	c_uid[8];
+	char	c_gid[8];
+	char	c_nlink[8];
+	char	c_mtime[8];
+	char	c_filesize[8];
+	char	c_devmajor[8];
+	char	c_devminor[8];
+	char	c_rdevmajor[8];
+	char	c_rdevminor[8];
+	char	c_namesize[8];
+	char	c_crc[8];
+};
+
+struct links_entry {
+        struct links_entry      *next;
+        struct links_entry      *previous;
+        int                      links;
+        dev_t                    dev;
+        ino_t                    ino;
+        char                    *name;
+};
+
+#define	CPIO_MAGIC   0x13141516
+struct cpio {
+	int			  magic;
+	int			(*read_header)(struct archive_read *, struct cpio *,
+				     struct archive_entry *, size_t *, size_t *);
+	struct links_entry	 *links_head;
+	struct archive_string	  entry_name;
+	struct archive_string	  entry_linkname;
+	off_t			  entry_bytes_remaining;
+	off_t			  entry_offset;
+	off_t			  entry_padding;
+};
+
+static int64_t	atol16(const char *, unsigned);
+static int64_t	atol8(const char *, unsigned);
+static int	archive_read_format_cpio_bid(struct archive_read *);
+static int	archive_read_format_cpio_cleanup(struct archive_read *);
+static int	archive_read_format_cpio_read_data(struct archive_read *,
+		    const void **, size_t *, off_t *);
+static int	archive_read_format_cpio_read_header(struct archive_read *,
+		    struct archive_entry *);
+static int	be4(const unsigned char *);
+static int	find_odc_header(struct archive_read *);
+static int	find_newc_header(struct archive_read *);
+static int	header_bin_be(struct archive_read *, struct cpio *,
+		    struct archive_entry *, size_t *, size_t *);
+static int	header_bin_le(struct archive_read *, struct cpio *,
+		    struct archive_entry *, size_t *, size_t *);
+static int	header_newc(struct archive_read *, struct cpio *,
+		    struct archive_entry *, size_t *, size_t *);
+static int	header_odc(struct archive_read *, struct cpio *,
+		    struct archive_entry *, size_t *, size_t *);
+static int	is_octal(const char *, size_t);
+static int	is_hex(const char *, size_t);
+static int	le4(const unsigned char *);
+static void	record_hardlink(struct cpio *cpio, struct archive_entry *entry);
+
+int
+archive_read_support_format_cpio(struct archive *_a)
+{
+	struct archive_read *a = (struct archive_read *)_a;
+	struct cpio *cpio;
+	int r;
+
+	cpio = (struct cpio *)malloc(sizeof(*cpio));
+	if (cpio == NULL) {
+		archive_set_error(&a->archive, ENOMEM, "Can't allocate cpio data");
+		return (ARCHIVE_FATAL);
+	}
+	memset(cpio, 0, sizeof(*cpio));
+	cpio->magic = CPIO_MAGIC;
+
+	r = __archive_read_register_format(a,
+	    cpio,
+	    archive_read_format_cpio_bid,
+	    archive_read_format_cpio_read_header,
+	    archive_read_format_cpio_read_data,
+	    NULL,
+	    archive_read_format_cpio_cleanup);
+
+	if (r != ARCHIVE_OK)
+		free(cpio);
+	return (ARCHIVE_OK);
+}
+
+
+static int
+archive_read_format_cpio_bid(struct archive_read *a)
+{
+	int bytes_read;
+	const void *h;
+	const unsigned char *p;
+	struct cpio *cpio;
+	int bid;
+
+	cpio = (struct cpio *)(a->format->data);
+
+	bytes_read = (a->decompressor->read_ahead)(a, &h, 6);
+	/* Convert error code into error return. */
+	if (bytes_read < 0)
+		return ((int)bytes_read);
+	if (bytes_read < 6)
+		return (-1);
+
+	p = (const unsigned char *)h;
+	bid = 0;
+	if (memcmp(p, "070707", 6) == 0) {
+		/* ASCII cpio archive (odc, POSIX.1) */
+		cpio->read_header = header_odc;
+		bid += 48;
+		/*
+		 * XXX TODO:  More verification; Could check that only octal
+		 * digits appear in appropriate header locations. XXX
+		 */
+	} else if (memcmp(p, "070701", 6) == 0) {
+		/* ASCII cpio archive (SVR4 without CRC) */
+		cpio->read_header = header_newc;
+		bid += 48;
+		/*
+		 * XXX TODO:  More verification; Could check that only hex
+		 * digits appear in appropriate header locations. XXX
+		 */
+	} else if (memcmp(p, "070702", 6) == 0) {
+		/* ASCII cpio archive (SVR4 with CRC) */
+		/* XXX TODO: Flag that we should check the CRC. XXX */
+		cpio->read_header = header_newc;
+		bid += 48;
+		/*
+		 * XXX TODO:  More verification; Could check that only hex
+		 * digits appear in appropriate header locations. XXX
+		 */
+	} else if (p[0] * 256 + p[1] == 070707) {
+		/* big-endian binary cpio archives */
+		cpio->read_header = header_bin_be;
+		bid += 16;
+		/* Is more verification possible here? */
+	} else if (p[0] + p[1] * 256 == 070707) {
+		/* little-endian binary cpio archives */
+		cpio->read_header = header_bin_le;
+		bid += 16;
+		/* Is more verification possible here? */
+	} else
+		return (ARCHIVE_WARN);
+
+	return (bid);
+}
+
+static int
+archive_read_format_cpio_read_header(struct archive_read *a,
+    struct archive_entry *entry)
+{
+	struct cpio *cpio;
+	size_t bytes;
+	const void *h;
+	size_t namelength;
+	size_t name_pad;
+	int r;
+
+	cpio = (struct cpio *)(a->format->data);
+	r = (cpio->read_header(a, cpio, entry, &namelength, &name_pad));
+
+	if (r < ARCHIVE_WARN)
+		return (r);
+
+	/* Read name from buffer. */
+	bytes = (a->decompressor->read_ahead)(a, &h, namelength + name_pad);
+	if (bytes < namelength + name_pad)
+	    return (ARCHIVE_FATAL);
+	(a->decompressor->consume)(a, namelength + name_pad);
+	archive_strncpy(&cpio->entry_name, (const char *)h, namelength);
+	archive_entry_set_pathname(entry, cpio->entry_name.s);
+	cpio->entry_offset = 0;
+
+	/* If this is a symlink, read the link contents. */
+	if (archive_entry_filetype(entry) == AE_IFLNK) {
+		bytes = (a->decompressor->read_ahead)(a, &h,
+		    cpio->entry_bytes_remaining);
+		if ((off_t)bytes < cpio->entry_bytes_remaining)
+			return (ARCHIVE_FATAL);
+		(a->decompressor->consume)(a, cpio->entry_bytes_remaining);
+		archive_strncpy(&cpio->entry_linkname, (const char *)h,
+		    cpio->entry_bytes_remaining);
+		archive_entry_set_symlink(entry, cpio->entry_linkname.s);
+		cpio->entry_bytes_remaining = 0;
+	}
+
+	/* Compare name to "TRAILER!!!" to test for end-of-archive. */
+	if (namelength == 11 && strcmp((const char *)h, "TRAILER!!!") == 0) {
+	    /* TODO: Store file location of start of block. */
+	    archive_set_error(&a->archive, 0, NULL);
+	    return (ARCHIVE_EOF);
+	}
+
+	/* Detect and record hardlinks to previously-extracted entries. */
+	record_hardlink(cpio, entry);
+
+	return (r);
+}
+
+static int
+archive_read_format_cpio_read_data(struct archive_read *a,
+    const void **buff, size_t *size, off_t *offset)
+{
+	ssize_t bytes_read;
+	struct cpio *cpio;
+
+	cpio = (struct cpio *)(a->format->data);
+	if (cpio->entry_bytes_remaining > 0) {
+		bytes_read = (a->decompressor->read_ahead)(a, buff, 1);
+		if (bytes_read <= 0)
+			return (ARCHIVE_FATAL);
+		if (bytes_read > cpio->entry_bytes_remaining)
+			bytes_read = cpio->entry_bytes_remaining;
+		*size = bytes_read;
+		*offset = cpio->entry_offset;
+		cpio->entry_offset += bytes_read;
+		cpio->entry_bytes_remaining -= bytes_read;
+		(a->decompressor->consume)(a, bytes_read);
+		return (ARCHIVE_OK);
+	} else {
+		while (cpio->entry_padding > 0) {
+			bytes_read = (a->decompressor->read_ahead)(a, buff, 1);
+			if (bytes_read <= 0)
+				return (ARCHIVE_FATAL);
+			if (bytes_read > cpio->entry_padding)
+				bytes_read = cpio->entry_padding;
+			(a->decompressor->consume)(a, bytes_read);
+			cpio->entry_padding -= bytes_read;
+		}
+		*buff = NULL;
+		*size = 0;
+		*offset = cpio->entry_offset;
+		return (ARCHIVE_EOF);
+	}
+}
+
+/*
+ * Skip forward to the next cpio newc header by searching for the
+ * 07070[12] string.  This should be generalized and merged with
+ * find_odc_header below.
+ */
+static int
+is_hex(const char *p, size_t len)
+{
+	while (len-- > 0) {
+		if ((*p >= '0' && *p <= '9')
+		    || (*p >= 'a' && *p <= 'f')
+		    || (*p >= 'A' && *p <= 'F'))
+			++p;
+		else
+			return (0);
+	}
+	return (1);
+}
+
+static int
+find_newc_header(struct archive_read *a)
+{
+	const void *h;
+	const char *p, *q;
+	size_t skip, bytes, skipped = 0;
+
+	for (;;) {
+		bytes = (a->decompressor->read_ahead)(a, &h, 2048);
+		if (bytes < sizeof(struct cpio_newc_header))
+			return (ARCHIVE_FATAL);
+		p = h;
+		q = p + bytes;
+
+		/* Try the typical case first, then go into the slow search.*/
+		if (memcmp("07070", p, 5) == 0
+		    && (p[5] == '1' || p[5] == '2')
+		    && is_hex(p, sizeof(struct cpio_newc_header)))
+			return (ARCHIVE_OK);
+
+		/*
+		 * Scan ahead until we find something that looks
+		 * like an odc header.
+		 */
+		while (p + sizeof(struct cpio_newc_header) < q) {
+			switch (p[5]) {
+			case '1':
+			case '2':
+				if (memcmp("07070", p, 5) == 0
+					&& is_hex(p, sizeof(struct cpio_newc_header))) {
+					skip = p - (const char *)h;
+					(a->decompressor->consume)(a, skip);
+					skipped += skip;
+					if (skipped > 0) {
+						archive_set_error(&a->archive,
+						    0,
+						    "Skipped %d bytes before "
+						    "finding valid header",
+						    (int)skipped);
+						return (ARCHIVE_WARN);
+					}
+					return (ARCHIVE_OK);
+				}
+				p += 2;
+				break;
+			case '0':
+				p++;
+				break;
+			default:
+				p += 6;
+				break;
+			}
+		}
+		skip = p - (const char *)h;
+		(a->decompressor->consume)(a, skip);
+		skipped += skip;
+	}
+}
+
+static int
+header_newc(struct archive_read *a, struct cpio *cpio,
+    struct archive_entry *entry, size_t *namelength, size_t *name_pad)
+{
+	const void *h;
+	const struct cpio_newc_header *header;
+	size_t bytes;
+	int r;
+
+	r = find_newc_header(a);
+	if (r < ARCHIVE_WARN)
+		return (r);
+
+	/* Read fixed-size portion of header. */
+	bytes = (a->decompressor->read_ahead)(a, &h, sizeof(struct cpio_newc_header));
+	if (bytes < sizeof(struct cpio_newc_header))
+	    return (ARCHIVE_FATAL);
+	(a->decompressor->consume)(a, sizeof(struct cpio_newc_header));
+
+	/* Parse out hex fields. */
+	header = (const struct cpio_newc_header *)h;
+
+	if (memcmp(header->c_magic, "070701", 6) == 0) {
+		a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC;
+		a->archive.archive_format_name = "ASCII cpio (SVR4 with no CRC)";
+	} else if (memcmp(header->c_magic, "070702", 6) == 0) {
+		a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_CRC;
+		a->archive.archive_format_name = "ASCII cpio (SVR4 with CRC)";
+	} else {
+		/* TODO: Abort here? */
+	}
+
+	archive_entry_set_devmajor(entry, atol16(header->c_devmajor, sizeof(header->c_devmajor)));
+	archive_entry_set_devminor(entry, atol16(header->c_devminor, sizeof(header->c_devminor)));
+	archive_entry_set_ino(entry, atol16(header->c_ino, sizeof(header->c_ino)));
+	archive_entry_set_mode(entry, atol16(header->c_mode, sizeof(header->c_mode)));
+	archive_entry_set_uid(entry, atol16(header->c_uid, sizeof(header->c_uid)));
+	archive_entry_set_gid(entry, atol16(header->c_gid, sizeof(header->c_gid)));
+	archive_entry_set_nlink(entry, atol16(header->c_nlink, sizeof(header->c_nlink)));
+	archive_entry_set_rdevmajor(entry, atol16(header->c_rdevmajor, sizeof(header->c_rdevmajor)));
+	archive_entry_set_rdevminor(entry, atol16(header->c_rdevminor, sizeof(header->c_rdevminor)));
+	archive_entry_set_mtime(entry, atol16(header->c_mtime, sizeof(header->c_mtime)), 0);
+	*namelength = atol16(header->c_namesize, sizeof(header->c_namesize));
+	/* Pad name to 2 more than a multiple of 4. */
+	*name_pad = (2 - *namelength) & 3;
+
+	/*
+	 * Note: entry_bytes_remaining is at least 64 bits and
+	 * therefore guaranteed to be big enough for a 33-bit file
+	 * size.
+	 */
+	cpio->entry_bytes_remaining =
+	    atol16(header->c_filesize, sizeof(header->c_filesize));
+	archive_entry_set_size(entry, cpio->entry_bytes_remaining);
+	/* Pad file contents to a multiple of 4. */
+	cpio->entry_padding = 3 & -cpio->entry_bytes_remaining;
+	return (r);
+}
+
+/*
+ * Skip forward to the next cpio odc header by searching for the
+ * 070707 string.  This is a hand-optimized search that could
+ * probably be easily generalized to handle all character-based
+ * cpio variants.
+ */
+static int
+is_octal(const char *p, size_t len)
+{
+	while (len-- > 0) {
+		if (*p < '0' || *p > '7')
+			return (0);
+	        ++p;
+	}
+	return (1);
+}
+
+static int
+find_odc_header(struct archive_read *a)
+{
+	const void *h;
+	const char *p, *q;
+	size_t skip, bytes, skipped = 0;
+
+	for (;;) {
+		bytes = (a->decompressor->read_ahead)(a, &h, 512);
+		if (bytes < sizeof(struct cpio_odc_header))
+			return (ARCHIVE_FATAL);
+		p = h;
+		q = p + bytes;
+
+		/* Try the typical case first, then go into the slow search.*/
+		if (memcmp("070707", p, 6) == 0
+		    && is_octal(p, sizeof(struct cpio_odc_header)))
+			return (ARCHIVE_OK);
+
+		/*
+		 * Scan ahead until we find something that looks
+		 * like an odc header.
+		 */
+		while (p + sizeof(struct cpio_odc_header) < q) {
+			switch (p[5]) {
+			case '7':
+				if (memcmp("070707", p, 6) == 0
+					&& is_octal(p, sizeof(struct cpio_odc_header))) {
+					skip = p - (const char *)h;
+					(a->decompressor->consume)(a, skip);
+					skipped += skip;
+					if (skipped > 0) {
+						archive_set_error(&a->archive,
+						    0,
+						    "Skipped %d bytes before "
+						    "finding valid header",
+						    (int)skipped);
+						return (ARCHIVE_WARN);
+					}
+					return (ARCHIVE_OK);
+				}
+				p += 2;
+				break;
+			case '0':
+				p++;
+				break;
+			default:
+				p += 6;
+				break;
+			}
+		}
+		skip = p - (const char *)h;
+		(a->decompressor->consume)(a, skip);
+		skipped += skip;
+	}
+}
+
+static int
+header_odc(struct archive_read *a, struct cpio *cpio,
+    struct archive_entry *entry, size_t *namelength, size_t *name_pad)
+{
+	const void *h;
+	int r;
+	const struct cpio_odc_header *header;
+	size_t bytes;
+
+	a->archive.archive_format = ARCHIVE_FORMAT_CPIO_POSIX;
+	a->archive.archive_format_name = "POSIX octet-oriented cpio";
+
+	/* Find the start of the next header. */
+	r = find_odc_header(a);
+	if (r < ARCHIVE_WARN)
+		return (r);
+
+	/* Read fixed-size portion of header. */
+	bytes = (a->decompressor->read_ahead)(a, &h, sizeof(struct cpio_odc_header));
+	if (bytes < sizeof(struct cpio_odc_header))
+	    return (ARCHIVE_FATAL);
+	(a->decompressor->consume)(a, sizeof(struct cpio_odc_header));
+
+	/* Parse out octal fields. */
+	header = (const struct cpio_odc_header *)h;
+
+	archive_entry_set_dev(entry, atol8(header->c_dev, sizeof(header->c_dev)));
+	archive_entry_set_ino(entry, atol8(header->c_ino, sizeof(header->c_ino)));
+	archive_entry_set_mode(entry, atol8(header->c_mode, sizeof(header->c_mode)));
+	archive_entry_set_uid(entry, atol8(header->c_uid, sizeof(header->c_uid)));
+	archive_entry_set_gid(entry, atol8(header->c_gid, sizeof(header->c_gid)));
+	archive_entry_set_nlink(entry, atol8(header->c_nlink, sizeof(header->c_nlink)));
+	archive_entry_set_rdev(entry, atol8(header->c_rdev, sizeof(header->c_rdev)));
+	archive_entry_set_mtime(entry, atol8(header->c_mtime, sizeof(header->c_mtime)), 0);
+	*namelength = atol8(header->c_namesize, sizeof(header->c_namesize));
+	*name_pad = 0; /* No padding of filename. */
+
+	/*
+	 * Note: entry_bytes_remaining is at least 64 bits and
+	 * therefore guaranteed to be big enough for a 33-bit file
+	 * size.
+	 */
+	cpio->entry_bytes_remaining =
+	    atol8(header->c_filesize, sizeof(header->c_filesize));
+	archive_entry_set_size(entry, cpio->entry_bytes_remaining);
+	cpio->entry_padding = 0;
+	return (r);
+}
+
+static int
+header_bin_le(struct archive_read *a, struct cpio *cpio,
+    struct archive_entry *entry, size_t *namelength, size_t *name_pad)
+{
+	const void *h;
+	const struct cpio_bin_header *header;
+	size_t bytes;
+
+	a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_LE;
+	a->archive.archive_format_name = "cpio (little-endian binary)";
+
+	/* Read fixed-size portion of header. */
+	bytes = (a->decompressor->read_ahead)(a, &h, sizeof(struct cpio_bin_header));
+	if (bytes < sizeof(struct cpio_bin_header))
+	    return (ARCHIVE_FATAL);
+	(a->decompressor->consume)(a, sizeof(struct cpio_bin_header));
+
+	/* Parse out binary fields. */
+	header = (const struct cpio_bin_header *)h;
+
+	archive_entry_set_dev(entry, header->c_dev[0] + header->c_dev[1] * 256);
+	archive_entry_set_ino(entry, header->c_ino[0] + header->c_ino[1] * 256);
+	archive_entry_set_mode(entry, header->c_mode[0] + header->c_mode[1] * 256);
+	archive_entry_set_uid(entry, header->c_uid[0] + header->c_uid[1] * 256);
+	archive_entry_set_gid(entry, header->c_gid[0] + header->c_gid[1] * 256);
+	archive_entry_set_nlink(entry, header->c_nlink[0] + header->c_nlink[1] * 256);
+	archive_entry_set_rdev(entry, header->c_rdev[0] + header->c_rdev[1] * 256);
+	archive_entry_set_mtime(entry, le4(header->c_mtime), 0);
+	*namelength = header->c_namesize[0] + header->c_namesize[1] * 256;
+	*name_pad = *namelength & 1; /* Pad to even. */
+
+	cpio->entry_bytes_remaining = le4(header->c_filesize);
+	archive_entry_set_size(entry, cpio->entry_bytes_remaining);
+	cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
+	return (ARCHIVE_OK);
+}
+
+static int
+header_bin_be(struct archive_read *a, struct cpio *cpio,
+    struct archive_entry *entry, size_t *namelength, size_t *name_pad)
+{
+	const void *h;
+	const struct cpio_bin_header *header;
+	size_t bytes;
+
+	a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_BE;
+	a->archive.archive_format_name = "cpio (big-endian binary)";
+
+	/* Read fixed-size portion of header. */
+	bytes = (a->decompressor->read_ahead)(a, &h,
+	    sizeof(struct cpio_bin_header));
+	if (bytes < sizeof(struct cpio_bin_header))
+	    return (ARCHIVE_FATAL);
+	(a->decompressor->consume)(a, sizeof(struct cpio_bin_header));
+
+	/* Parse out binary fields. */
+	header = (const struct cpio_bin_header *)h;
+	archive_entry_set_dev(entry, header->c_dev[0] * 256 + header->c_dev[1]);
+	archive_entry_set_ino(entry, header->c_ino[0] * 256 + header->c_ino[1]);
+	archive_entry_set_mode(entry, header->c_mode[0] * 256 + header->c_mode[1]);
+	archive_entry_set_uid(entry, header->c_uid[0] * 256 + header->c_uid[1]);
+	archive_entry_set_gid(entry, header->c_gid[0] * 256 + header->c_gid[1]);
+	archive_entry_set_nlink(entry, header->c_nlink[0] * 256 + header->c_nlink[1]);
+	archive_entry_set_rdev(entry, header->c_rdev[0] * 256 + header->c_rdev[1]);
+	archive_entry_set_mtime(entry, be4(header->c_mtime), 0);
+	*namelength = header->c_namesize[0] * 256 + header->c_namesize[1];
+	*name_pad = *namelength & 1; /* Pad to even. */
+
+	cpio->entry_bytes_remaining = be4(header->c_filesize);
+	archive_entry_set_size(entry, cpio->entry_bytes_remaining);
+	cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
+	return (ARCHIVE_OK);
+}
+
+static int
+archive_read_format_cpio_cleanup(struct archive_read *a)
+{
+	struct cpio *cpio;
+
+	cpio = (struct cpio *)(a->format->data);
+        /* Free inode->name map */
+        while (cpio->links_head != NULL) {
+                struct links_entry *lp = cpio->links_head->next;
+
+                if (cpio->links_head->name)
+                        free(cpio->links_head->name);
+                free(cpio->links_head);
+                cpio->links_head = lp;
+        }
+	archive_string_free(&cpio->entry_name);
+	free(cpio);
+	(a->format->data) = NULL;
+	return (ARCHIVE_OK);
+}
+
+static int
+le4(const unsigned char *p)
+{
+	return ((p[0]<<16) + (p[1]<<24) + (p[2]<<0) + (p[3]<<8));
+}
+
+
+static int
+be4(const unsigned char *p)
+{
+	return (p[0] + (p[1]<<8) + (p[2]<<16) + (p[3]<<24));
+}
+
+/*
+ * Note that this implementation does not (and should not!) obey
+ * locale settings; you cannot simply substitute strtol here, since
+ * it does obey locale.
+ */
+static int64_t
+atol8(const char *p, unsigned char_cnt)
+{
+	int64_t l;
+	int digit;
+
+	l = 0;
+	while (char_cnt-- > 0) {
+		if (*p >= '0' && *p <= '7')
+			digit = *p - '0';
+		else
+			return (l);
+		p++;
+		l <<= 3;
+		l |= digit;
+	}
+	return (l);
+}
+
+static int64_t
+atol16(const char *p, unsigned char_cnt)
+{
+	int64_t l;
+	int digit;
+
+	l = 0;
+	while (char_cnt-- > 0) {
+		if (*p >= 'a' && *p <= 'f')
+			digit = *p - 'a' + 10;
+		else if (*p >= 'A' && *p <= 'F')
+			digit = *p - 'A' + 10;
+		else if (*p >= '0' && *p <= '9')
+			digit = *p - '0';
+		else
+			return (l);
+		p++;
+		l <<= 4;
+		l |= digit;
+	}
+	return (l);
+}
+
+static void
+record_hardlink(struct cpio *cpio, struct archive_entry *entry)
+{
+        struct links_entry      *le;
+	dev_t dev;
+	ino_t ino;
+
+	dev = archive_entry_dev(entry);
+	ino = archive_entry_ino(entry);
+
+        /*
+         * First look in the list of multiply-linked files.  If we've
+         * already dumped it, convert this entry to a hard link entry.
+         */
+        for (le = cpio->links_head; le; le = le->next) {
+                if (le->dev == dev && le->ino == ino) {
+                        archive_entry_copy_hardlink(entry, le->name);
+
+                        if (--le->links <= 0) {
+                                if (le->previous != NULL)
+                                        le->previous->next = le->next;
+                                if (le->next != NULL)
+                                        le->next->previous = le->previous;
+                                if (cpio->links_head == le)
+                                        cpio->links_head = le->next;
+				free(le->name);
+                                free(le);
+                        }
+
+                        return;
+                }
+        }
+
+        le = (struct links_entry *)malloc(sizeof(struct links_entry));
+	if (le == NULL)
+		__archive_errx(1, "Out of memory adding file to list");
+        if (cpio->links_head != NULL)
+                cpio->links_head->previous = le;
+        le->next = cpio->links_head;
+        le->previous = NULL;
+        cpio->links_head = le;
+        le->dev = dev;
+        le->ino = ino;
+        le->links = archive_entry_nlink(entry) - 1;
+        le->name = strdup(archive_entry_pathname(entry));
+	if (le->name == NULL)
+		__archive_errx(1, "Out of memory adding file to list");
+}