286 lines
8.2 KiB
C
286 lines
8.2 KiB
C
/*-
|
|
* Copyright (c) 2003-2007 Tim Kientzle
|
|
* Copyright (c) 2006 Rudolf Marek SYSGO s.r.o.
|
|
* 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
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include "archive.h"
|
|
#include "archive_entry.h"
|
|
#include "archive_private.h"
|
|
#include "archive_write_private.h"
|
|
|
|
static ssize_t archive_write_newc_data(struct archive_write *,
|
|
const void *buff, size_t s);
|
|
static int archive_write_newc_finish(struct archive_write *);
|
|
static int archive_write_newc_destroy(struct archive_write *);
|
|
static int archive_write_newc_finish_entry(struct archive_write *);
|
|
static int archive_write_newc_header(struct archive_write *,
|
|
struct archive_entry *);
|
|
static int format_hex(int64_t, void *, int);
|
|
static int64_t format_hex_recursive(int64_t, char *, int);
|
|
|
|
struct cpio {
|
|
uint64_t entry_bytes_remaining;
|
|
int padding;
|
|
};
|
|
|
|
struct cpio_header_newc {
|
|
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_checksum[8];
|
|
};
|
|
|
|
/*
|
|
* Set output format to 'cpio' format.
|
|
*/
|
|
int
|
|
archive_write_set_format_cpio_newc(struct archive *_a)
|
|
{
|
|
struct archive_write *a = (struct archive_write *)_a;
|
|
struct cpio *cpio;
|
|
|
|
/* If someone else was already registered, unregister them. */
|
|
if (a->format_destroy != NULL)
|
|
(a->format_destroy)(a);
|
|
|
|
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));
|
|
a->format_data = cpio;
|
|
|
|
a->pad_uncompressed = 1;
|
|
a->format_write_header = archive_write_newc_header;
|
|
a->format_write_data = archive_write_newc_data;
|
|
a->format_finish_entry = archive_write_newc_finish_entry;
|
|
a->format_finish = archive_write_newc_finish;
|
|
a->format_destroy = archive_write_newc_destroy;
|
|
a->archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC;
|
|
a->archive_format_name = "SVR4 cpio nocrc";
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
archive_write_newc_header(struct archive_write *a, struct archive_entry *entry)
|
|
{
|
|
struct cpio *cpio;
|
|
const char *p, *path;
|
|
int pathlength, ret;
|
|
struct cpio_header_newc h;
|
|
int pad;
|
|
|
|
cpio = (struct cpio *)a->format_data;
|
|
ret = 0;
|
|
|
|
path = archive_entry_pathname(entry);
|
|
pathlength = strlen(path) + 1; /* Include trailing null. */
|
|
|
|
memset(&h, 0, sizeof(h));
|
|
format_hex(0x070701, &h.c_magic, sizeof(h.c_magic));
|
|
format_hex(archive_entry_devmajor(entry), &h.c_devmajor, sizeof(h.c_devmajor));
|
|
format_hex(archive_entry_devminor(entry), &h.c_devminor, sizeof(h.c_devminor));
|
|
if (archive_entry_ino(entry) > 0xffffffff) {
|
|
archive_set_error(&a->archive, ERANGE, "large inode number truncated");
|
|
ret = ARCHIVE_WARN;
|
|
}
|
|
|
|
format_hex(archive_entry_ino(entry) & 0xffffffff, &h.c_ino, sizeof(h.c_ino));
|
|
format_hex(archive_entry_mode(entry), &h.c_mode, sizeof(h.c_mode));
|
|
format_hex(archive_entry_uid(entry), &h.c_uid, sizeof(h.c_uid));
|
|
format_hex(archive_entry_gid(entry), &h.c_gid, sizeof(h.c_gid));
|
|
format_hex(archive_entry_nlink(entry), &h.c_nlink, sizeof(h.c_nlink));
|
|
if (archive_entry_filetype(entry) == AE_IFBLK
|
|
|| archive_entry_filetype(entry) == AE_IFCHR) {
|
|
format_hex(archive_entry_rdevmajor(entry), &h.c_rdevmajor, sizeof(h.c_rdevmajor));
|
|
format_hex(archive_entry_rdevminor(entry), &h.c_rdevminor, sizeof(h.c_rdevminor));
|
|
} else {
|
|
format_hex(0, &h.c_rdevmajor, sizeof(h.c_rdevmajor));
|
|
format_hex(0, &h.c_rdevminor, sizeof(h.c_rdevminor));
|
|
}
|
|
format_hex(archive_entry_mtime(entry), &h.c_mtime, sizeof(h.c_mtime));
|
|
format_hex(pathlength, &h.c_namesize, sizeof(h.c_namesize));
|
|
format_hex(0, &h.c_checksum, sizeof(h.c_checksum));
|
|
|
|
/* Non-regular files don't store bodies. */
|
|
if (archive_entry_filetype(entry) != AE_IFREG)
|
|
archive_entry_set_size(entry, 0);
|
|
|
|
/* Symlinks get the link written as the body of the entry. */
|
|
p = archive_entry_symlink(entry);
|
|
if (p != NULL && *p != '\0')
|
|
format_hex(strlen(p), &h.c_filesize, sizeof(h.c_filesize));
|
|
else
|
|
format_hex(archive_entry_size(entry),
|
|
&h.c_filesize, sizeof(h.c_filesize));
|
|
|
|
ret = (a->compressor.write)(a, &h, sizeof(h));
|
|
if (ret != ARCHIVE_OK)
|
|
return (ARCHIVE_FATAL);
|
|
|
|
/* Pad pathname to even length. */
|
|
ret = (a->compressor.write)(a, path, pathlength);
|
|
if (ret != ARCHIVE_OK)
|
|
return (ARCHIVE_FATAL);
|
|
pad = 0x3 & - (pathlength + sizeof(struct cpio_header_newc));
|
|
if (pad)
|
|
ret = (a->compressor.write)(a, "\0\0\0", pad);
|
|
if (ret != ARCHIVE_OK)
|
|
return (ARCHIVE_FATAL);
|
|
|
|
cpio->entry_bytes_remaining = archive_entry_size(entry);
|
|
cpio->padding = 3 & (-cpio->entry_bytes_remaining);
|
|
|
|
/* Write the symlink now. */
|
|
if (p != NULL && *p != '\0') {
|
|
ret = (a->compressor.write)(a, p, strlen(p));
|
|
if (ret != ARCHIVE_OK)
|
|
return (ARCHIVE_FATAL);
|
|
pad = 0x3 & -strlen(p);
|
|
ret = (a->compressor.write)(a, "\0\0\0", pad);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static ssize_t
|
|
archive_write_newc_data(struct archive_write *a, const void *buff, size_t s)
|
|
{
|
|
struct cpio *cpio;
|
|
int ret;
|
|
|
|
cpio = (struct cpio *)a->format_data;
|
|
if (s > cpio->entry_bytes_remaining)
|
|
s = cpio->entry_bytes_remaining;
|
|
|
|
ret = (a->compressor.write)(a, buff, s);
|
|
cpio->entry_bytes_remaining -= s;
|
|
if (ret >= 0)
|
|
return (s);
|
|
else
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Format a number into the specified field.
|
|
*/
|
|
static int
|
|
format_hex(int64_t v, void *p, int digits)
|
|
{
|
|
int64_t max;
|
|
int ret;
|
|
|
|
max = (((int64_t)1) << (digits * 4)) - 1;
|
|
if (v >= 0 && v <= max) {
|
|
format_hex_recursive(v, (char *)p, digits);
|
|
ret = 0;
|
|
} else {
|
|
format_hex_recursive(max, (char *)p, digits);
|
|
ret = -1;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int64_t
|
|
format_hex_recursive(int64_t v, char *p, int s)
|
|
{
|
|
if (s == 0)
|
|
return (v);
|
|
v = format_hex_recursive(v, p+1, s-1);
|
|
*p = "0123456789abcdef"[v & 0xf];
|
|
return (v >>= 4);
|
|
}
|
|
|
|
static int
|
|
archive_write_newc_finish(struct archive_write *a)
|
|
{
|
|
struct cpio *cpio;
|
|
int er;
|
|
struct archive_entry *trailer;
|
|
|
|
cpio = (struct cpio *)a->format_data;
|
|
trailer = archive_entry_new();
|
|
archive_entry_set_nlink(trailer, 1);
|
|
archive_entry_set_pathname(trailer, "TRAILER!!!");
|
|
er = archive_write_newc_header(a, trailer);
|
|
archive_entry_free(trailer);
|
|
return (er);
|
|
}
|
|
|
|
static int
|
|
archive_write_newc_destroy(struct archive_write *a)
|
|
{
|
|
struct cpio *cpio;
|
|
|
|
cpio = (struct cpio *)a->format_data;
|
|
free(cpio);
|
|
a->format_data = NULL;
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static int
|
|
archive_write_newc_finish_entry(struct archive_write *a)
|
|
{
|
|
struct cpio *cpio;
|
|
int to_write, ret;
|
|
|
|
cpio = (struct cpio *)a->format_data;
|
|
ret = ARCHIVE_OK;
|
|
while (cpio->entry_bytes_remaining > 0) {
|
|
to_write = cpio->entry_bytes_remaining < a->null_length ?
|
|
cpio->entry_bytes_remaining : a->null_length;
|
|
ret = (a->compressor.write)(a, a->nulls, to_write);
|
|
if (ret != ARCHIVE_OK)
|
|
return (ret);
|
|
cpio->entry_bytes_remaining -= to_write;
|
|
}
|
|
ret = (a->compressor.write)(a, a->nulls, cpio->padding);
|
|
return (ret);
|
|
}
|