90072dfae0
Portability: Thanks to Juergen Lock, libarchive now compiles cleanly
on Linux. Along the way, I cleaned up a lot of error return codes and
reorganized some code to simplify conditional compilation of certain
sections.
Bug fixes:
* pax format now actually stores filenames that are 101-154
characters long.
* pax format now allows newline characters in extended attributes
(this fixes a long-standing bug in ACL handling)
* mtime/atime are now restored for directories
* directory list is now sorted prior to fix-up to permit
correct restore of non-writable dir heirarchies
150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 2003-2004 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
|
|
* in this position and unchanged.
|
|
* 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 <sys/stat.h>
|
|
#ifdef HAVE_DMALLOC
|
|
#include <dmalloc.h>
|
|
#endif
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "archive.h"
|
|
#include "archive_private.h"
|
|
|
|
struct write_file_data {
|
|
intmax_t offset;
|
|
int fd;
|
|
char filename[1];
|
|
};
|
|
|
|
static int file_close(struct archive *, void *);
|
|
static int file_open(struct archive *, void *);
|
|
static ssize_t file_write(struct archive *, void *, void *buff, size_t);
|
|
|
|
int
|
|
archive_write_open_file(struct archive *a, const char *filename)
|
|
{
|
|
return (archive_write_open_file_position(a, filename, 0));
|
|
}
|
|
|
|
int
|
|
archive_write_open_file_position(struct archive *a, const char *filename,
|
|
int64_t offset)
|
|
{
|
|
struct write_file_data *mine;
|
|
|
|
if (filename == NULL) {
|
|
mine = malloc(sizeof(*mine));
|
|
mine->filename[0] = 0;
|
|
} else {
|
|
mine = malloc(sizeof(*mine) + strlen(filename));
|
|
strcpy(mine->filename, filename);
|
|
}
|
|
mine->offset = offset;
|
|
mine->fd = -1;
|
|
return (archive_write_open(a, mine,
|
|
file_open, file_write, file_close));
|
|
}
|
|
|
|
static int
|
|
file_open(struct archive *a, void *client_data)
|
|
{
|
|
int flags;
|
|
struct write_file_data *mine;
|
|
struct stat st;
|
|
|
|
mine = client_data;
|
|
if (mine->offset == 0)
|
|
flags = O_WRONLY | O_CREAT | O_TRUNC;
|
|
else
|
|
flags = O_WRONLY;
|
|
|
|
if (*mine->filename != 0) {
|
|
mine->fd = open(mine->filename, flags, 0666);
|
|
|
|
/*
|
|
* If client hasn't explicitly set the last block
|
|
* handling, then set it here: If the output is a
|
|
* block or character device, pad the last block,
|
|
* otherwise leave it unpadded.
|
|
*/
|
|
if (mine->fd >= 0 && a->bytes_in_last_block < 0) {
|
|
/* Last block will be fully padded. */
|
|
fstat(mine->fd, &st);
|
|
if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode) ||
|
|
S_ISFIFO(st.st_mode))
|
|
archive_write_set_bytes_in_last_block(a, 0);
|
|
else
|
|
archive_write_set_bytes_in_last_block(a, 1);
|
|
}
|
|
} else {
|
|
mine->fd = 1;
|
|
if (a->bytes_in_last_block < 0) /* Still default? */
|
|
/* Last block will be fully padded. */
|
|
archive_write_set_bytes_in_last_block(a, 0);
|
|
}
|
|
|
|
if (mine->fd < 0) {
|
|
archive_set_error(a, errno, "Failed to open");
|
|
return -1;
|
|
}
|
|
|
|
if (mine->offset > 0) {
|
|
lseek(mine->fd, mine->offset, SEEK_SET);
|
|
ftruncate(mine->fd, mine->offset);
|
|
}
|
|
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
static ssize_t
|
|
file_write(struct archive *a, void *client_data, void *buff, size_t length)
|
|
{
|
|
struct write_file_data *mine;
|
|
|
|
(void)a; /* UNUSED */
|
|
mine = client_data;
|
|
return (write(mine->fd, buff, length));
|
|
}
|
|
|
|
static int
|
|
file_close(struct archive *a, void *client_data)
|
|
{
|
|
struct write_file_data *mine = client_data;
|
|
|
|
(void)a; /* UNUSED */
|
|
if (mine->fd >= 0)
|
|
close(mine->fd);
|
|
free(mine);
|
|
return (ARCHIVE_OK);
|
|
}
|