DragonFly On-Line Manual Pages
ARCHIVE(8) InterNetNews Documentation ARCHIVE(8)
NAME
archive - Usenet article archiver
SYNOPSIS
archive [-cfr] [-a archive] [-i index] [-p pattern] [input]
DESCRIPTION
archive makes copies of files specified on its standard input. It is
normally run either as a channel feed under innd or by a script before
news.daily is run.
archive reads the named input file, or standard input if no file is
given. The input is taken as a sequence of lines; blank lines and
lines starting with a number sign ("#") are ignored. All other lines
should specify the token of an article to archive. Every article is
retrieved from a token, and the Xref: header is used to determine the
target file in the archive directory. You can limit the targets taken
from the Xref: header with the -p option.
Files are copied to a directory within the archive directory,
patharchive in inn.conf (or some other directory given with -a). The
default is to create a hierarchy that mimics a traditional news spool
storage of the given articles; intermediate directories will be created
as needed. For example, if the input token represents article 2211 in
the newsgroup comp.sources.unix, archive will by default store the
article as:
comp/sources/unix/2211
in the archive area. This can be modified with the -c and -f options.
OPTIONS
-a archive
If the -a flag is given, its argument specifies the root of the
archive area, instead of patharchive in inn.conf.
-c If the -c flag is given, directory names will be flattened as
described under the -f option. Then, additionally, all posts will
be concatenated into a single file, appending to that file if it
already exists. The file name will be "YYYYMM", formed from the
current time when archive is run. In other words, if given an
article in comp.sources.unix on December 14th, 1998, the article
would be appended to the file:
comp.sources.unix/199812
in the archive area.
Articles will be separated by a line containing only "-----------".
-f If the -f flag is used, directory names will be flattened,
replacing the slashes with the periods. In other words, article
2211 in comp.sources.unix will be written to:
comp.sources.unix/2211
in the archive area.
-i index
If the -i flag is used, archive will append one line to the file
index for each article that it archives. This line will contain
the destination file name, the Message-ID: header, and the Subject:
header of the message, separated by spaces. If either header is
missing (normally not possible if the article was accepted by
innd), it will be replaced by "<none>". The headers will be
transformed using the same rules as are used to generate overview
data (unfolded and then with tabs, CR, and LF replaced by spaces).
-p pattern
Limits the targets taken from the Xref: header to the groups
specified in pattern. pattern is a uwildmat(3) pattern matching
newsgroups that you wish to have archive handle.
-r By default, archive sets its standard error to pathlog/errlog. To
suppress this redirection, use the -r flag.
RETURN VALUE
If the input is exhausted, archive will exit with a zero status. If an
I/O error occurs, it will try to spool its input, copying it to a file.
If there was no input filename, the standard input will be copied to
pathoutgoing/archive and the program will exit. If an input filename
was given, a temporary file named input.bch (if input is an absolute
pathname) or pathoutgoing/input.bch (if the filename does not begin
with a slash) is created. Once the input is copied, archive will try
to rename this temporary file to be the name of the input file, and
then exit.
EXAMPLES
A typical newsfeeds(5) entry to archive most source newsgroups is as
follows:
source-archive!\
:!*,*sources*,!*wanted*,!*.d\
:Tc,Wn\
:<pathbin>/archive -f -i <patharchive>/INDEX
Replace <pathbin> and <patharchive> with the appropriate paths.
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. Converted
to POD by Russ Allbery <eagle@eyrie.org>.
$Id: archive.pod 9767 2014-12-07 21:13:43Z iulius $
SEE ALSO
inn.conf(5), newsfeeds(5).
INN 2.6.0 2015-09-12 ARCHIVE(8)
ARCHIVE_READ_OPEN(3) DragonFly Library Functions Manual ARCHIVE_READ_OPEN(3)
NAME
archive_read_open, archive_read_open2, archive_read_open_fd,
archive_read_open_FILE, archive_read_open_filename,
archive_read_open_memory - functions for reading streaming archives
LIBRARY
Streaming Archive Library (libarchive, -larchive)
SYNOPSIS
#include <archive.h>
int
archive_read_open(struct archive *, void *client_data,
archive_open_callback *, archive_read_callback *,
archive_close_callback *);
int
archive_read_open2(struct archive *, void *client_data,
archive_open_callback *, archive_read_callback *,
archive_skip_callback *, archive_close_callback *);
int
archive_read_open_FILE(struct archive *, FILE *file);
int
archive_read_open_fd(struct archive *, int fd, size_t block_size);
int
archive_read_open_filename(struct archive *, const char *filename,
size_t block_size);
int
archive_read_open_memory(struct archive *, const void *buff,
size_t size);
DESCRIPTION
archive_read_open()
The same as archive_read_open2(), except that the skip callback
is assumed to be NULL.
archive_read_open2()
Freeze the settings, open the archive, and prepare for reading
entries. This is the most generic version of this call, which
accepts four callback functions. Most clients will want to use
archive_read_open_filename(), archive_read_open_FILE(),
archive_read_open_fd(), or archive_read_open_memory() instead.
The library invokes the client-provided functions to obtain raw
bytes from the archive.
archive_read_open_FILE()
Like archive_read_open(), except that it accepts a FILE *
pointer. This function should not be used with tape drives or
other devices that require strict I/O blocking.
archive_read_open_fd()
Like archive_read_open(), except that it accepts a file
descriptor and block size rather than a set of function pointers.
Note that the file descriptor will not be automatically closed at
end-of-archive. This function is safe for use with tape drives
or other blocked devices.
archive_read_open_file()
This is a deprecated synonym for archive_read_open_filename().
archive_read_open_filename()
Like archive_read_open(), except that it accepts a simple
filename and a block size. A NULL filename represents standard
input. This function is safe for use with tape drives or other
blocked devices.
archive_read_open_memory()
Like archive_read_open(), except that it accepts a pointer and
size of a block of memory containing the archive data.
A complete description of the struct archive and struct archive_entry
objects can be found in the overview manual page for libarchive(3).
CLIENT CALLBACKS
The callback functions must match the following prototypes:
typedef la_ssize_t archive_read_callback(struct archive *,
void *client_data, const void **buffer)
typedef la_int64_t archive_skip_callback(struct archive *,
void *client_data, off_t request)
typedef int archive_open_callback(struct archive *, void
*client_data)
typedef int archive_close_callback(struct archive *, void
*client_data)
The open callback is invoked by archive_open(). It should return
ARCHIVE_OK if the underlying file or data source is successfully opened.
If the open fails, it should call archive_set_error() to register an
error code and message and return ARCHIVE_FATAL.
The read callback is invoked whenever the library requires raw bytes from
the archive. The read callback should read data into a buffer, set the
const void **buffer argument to point to the available data, and return a
count of the number of bytes available. The library will invoke the read
callback again only after it has consumed this data. The library imposes
no constraints on the size of the data blocks returned. On end-of-file,
the read callback should return zero. On error, the read callback should
invoke archive_set_error() to register an error code and message and
return -1.
The skip callback is invoked when the library wants to ignore a block of
data. The return value is the number of bytes actually skipped, which
may differ from the request. If the callback cannot skip data, it should
return zero. If the skip callback is not provided (the function pointer
is NULL ), the library will invoke the read function instead and simply
discard the result. A skip callback can provide significant performance
gains when reading uncompressed archives from slow disk drives or other
media that can skip quickly.
The close callback is invoked by archive_close when the archive
processing is complete. The callback should return ARCHIVE_OK on
success. On failure, the callback should invoke archive_set_error() to
register an error code and message and return ARCHIVE_FATAL.
RETURN VALUES
These functions return ARCHIVE_OK on success, or ARCHIVE_FATAL.
ERRORS
Detailed error codes and textual descriptions are available from the
archive_errno() and archive_error_string() functions.
SEE ALSO
tar(1), archive_read(3), archive_read_data(3), archive_read_filter(3),
archive_read_format(3), archive_read_set_options(3), archive_util(3),
libarchive(3), tar(5)
DragonFly 5.9-DEVELOPMENT February 2, 2012 DragonFly 5.9-DEVELOPMENT