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Bump bundled libarchive version to 3.5.2
- Update bunlded libarchive version used on Windows/Mac - Enable requested zstd support while we are at it. Closes #211
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Floris Bos
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1869 changed files with 166685 additions and 9489 deletions
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dependencies/libarchive-3.5.2/libarchive/archive_util.3
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dependencies/libarchive-3.5.2/libarchive/archive_util.3
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.\" Copyright (c) 2003-2007 Tim Kientzle
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 2, 2012
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.Dt ARCHIVE_UTIL 3
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.Os
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.Sh NAME
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.Nm archive_clear_error ,
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.Nm archive_compression ,
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.Nm archive_compression_name ,
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.Nm archive_copy_error ,
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.Nm archive_errno ,
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.Nm archive_error_string ,
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.Nm archive_file_count ,
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.Nm archive_filter_code ,
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.Nm archive_filter_count ,
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.Nm archive_filter_name ,
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.Nm archive_format ,
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.Nm archive_format_name ,
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.Nm archive_position ,
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.Nm archive_set_error
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.Nd libarchive utility functions
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.Sh LIBRARY
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Streaming Archive Library (libarchive, -larchive)
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.Sh SYNOPSIS
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.In archive.h
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.Ft void
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.Fn archive_clear_error "struct archive *"
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.Ft int
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.Fn archive_compression "struct archive *"
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.Ft const char *
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.Fn archive_compression_name "struct archive *"
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.Ft void
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.Fn archive_copy_error "struct archive *" "struct archive *"
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.Ft int
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.Fn archive_errno "struct archive *"
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.Ft const char *
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.Fn archive_error_string "struct archive *"
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.Ft int
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.Fn archive_file_count "struct archive *"
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.Ft int
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.Fn archive_filter_code "struct archive *" "int"
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.Ft int
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.Fn archive_filter_count "struct archive *" "int"
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.Ft const char *
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.Fn archive_filter_name "struct archive *" "int"
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.Ft int
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.Fn archive_format "struct archive *"
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.Ft const char *
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.Fn archive_format_name "struct archive *"
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.Ft int64_t
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.Fn archive_position "struct archive *" "int"
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.Ft void
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.Fo archive_set_error
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.Fa "struct archive *"
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.Fa "int error_code"
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.Fa "const char *fmt"
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.Fa "..."
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.Fc
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.Sh DESCRIPTION
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These functions provide access to various information about the
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.Tn struct archive
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object used in the
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.Xr libarchive 3
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library.
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.Bl -tag -compact -width indent
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.It Fn archive_clear_error
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Clears any error information left over from a previous call.
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Not generally used in client code.
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.It Fn archive_compression
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Synonym for
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.Fn archive_filter_code a 0 .
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.It Fn archive_compression_name
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Synonym for
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.Fn archive_filter_name a 0 .
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.It Fn archive_copy_error
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Copies error information from one archive to another.
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.It Fn archive_errno
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Returns a numeric error code (see
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.Xr errno 2 )
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indicating the reason for the most recent error return.
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Note that this can not be reliably used to detect whether an
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error has occurred.
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It should be used only after another libarchive function
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has returned an error status.
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.It Fn archive_error_string
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Returns a textual error message suitable for display.
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The error message here is usually more specific than that
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obtained from passing the result of
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.Fn archive_errno
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to
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.Xr strerror 3 .
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.It Fn archive_file_count
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Returns a count of the number of files processed by this archive object.
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The count is incremented by calls to
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.Xr archive_write_header 3
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or
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.Xr archive_read_next_header 3 .
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.It Fn archive_filter_code
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Returns a numeric code identifying the indicated filter.
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See
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.Fn archive_filter_count
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for details of the numbering.
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.It Fn archive_filter_count
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Returns the number of filters in the current pipeline.
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For read archive handles, these filters are added automatically
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by the automatic format detection.
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For write archive handles, these filters are added by calls to the various
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.Fn archive_write_add_filter_XXX
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functions.
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Filters in the resulting pipeline are numbered so that filter 0
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is the filter closest to the format handler.
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As a convenience, functions that expect a filter number will
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accept -1 as a synonym for the highest-numbered filter.
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.Pp
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For example, when reading a uuencoded gzipped tar archive, there
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are three filters:
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filter 0 is the gunzip filter,
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filter 1 is the uudecode filter,
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and filter 2 is the pseudo-filter that wraps the archive read functions.
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In this case, requesting
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.Fn archive_position a -1
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would be a synonym for
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.Fn archive_position a 2
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which would return the number of bytes currently read from the archive, while
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.Fn archive_position a 1
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would return the number of bytes after uudecoding, and
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.Fn archive_position a 0
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would return the number of bytes after decompression.
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.It Fn archive_filter_name
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Returns a textual name identifying the indicated filter.
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See
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.Fn archive_filter_count
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for details of the numbering.
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.It Fn archive_format
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Returns a numeric code indicating the format of the current
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archive entry.
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This value is set by a successful call to
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.Fn archive_read_next_header .
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Note that it is common for this value to change from
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entry to entry.
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For example, a tar archive might have several entries that
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utilize GNU tar extensions and several entries that do not.
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These entries will have different format codes.
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.It Fn archive_format_name
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A textual description of the format of the current entry.
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.It Fn archive_position
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Returns the number of bytes read from or written to the indicated filter.
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In particular,
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.Fn archive_position a 0
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returns the number of bytes read or written by the format handler, while
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.Fn archive_position a -1
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returns the number of bytes read or written to the archive.
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See
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.Fn archive_filter_count
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for details of the numbering here.
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.It Fn archive_set_error
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Sets the numeric error code and error description that will be returned
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by
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.Fn archive_errno
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and
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.Fn archive_error_string .
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This function should be used within I/O callbacks to set system-specific
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error codes and error descriptions.
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This function accepts a printf-like format string and arguments.
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However, you should be careful to use only the following printf
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format specifiers:
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.Dq %c ,
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.Dq %d ,
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.Dq %jd ,
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.Dq %jo ,
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.Dq %ju ,
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.Dq %jx ,
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.Dq %ld ,
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.Dq %lo ,
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.Dq %lu ,
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.Dq %lx ,
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.Dq %o ,
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.Dq %u ,
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.Dq %s ,
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.Dq %x ,
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.Dq %% .
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Field-width specifiers and other printf features are
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not uniformly supported and should not be used.
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.El
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.Sh SEE ALSO
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.Xr archive_read 3 ,
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.Xr archive_write 3 ,
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.Xr libarchive 3 ,
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.Xr printf 3
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.Sh HISTORY
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The
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.Nm libarchive
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library first appeared in
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.Fx 5.3 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm libarchive
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library was written by
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.An Tim Kientzle Aq kientzle@acm.org .
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