3f8fb63c0c
option, which is used in print/teTeX3-texmf. The only difference from
the pax in src is that tar does not support the --chroot option if
fchroot(2) is not available.
Major changes and bug fixes since 20040802:
PR/18759: FUKAUMI Naoki: pax/tar dot-dot handling broken
PR/18840: Frederick Bruckman: Fix for PR/18663 incomplete pax symlink handling
This patch makes ``--insecure'' do something. Now if ``--insecure''
is not set (the default) we do a realpath(3) in all the pathnames
that we are trying to create and if either realpath fails, or the
path is outside our working directory, we print a warning and die.
This maybe too strict and might fail on valid archives that create
symlinks and directories in the wrong order.
PR/31923: Sergey Svishchev: pax-as-tar ignores -k, overwrites existing files
Fix from Onno van der Linden
PR/30132: Juan RP: tar --chroot refuses to extract files.
fchroot() changes the effective path, so we need to call updatepath().
Apply user supplied patterns first before applying actions for -A. This way pax
behavior WRT to patterns lines up with the example in the documentation
and how other implementations do it as well since -A is a non-standard
option/behavior. Fixes items noted in PR#23776
Add an option --chroot to tar. Causes it to chroot(".") before doing
an extract. With -h this will cause existing absolute symlinks to be treated
as relative to the current directory.
Helps sysinst handle existing symlinks in the target system.
Remove 'L' from the usage (got spilt into 'h' and 'H' many moons ago)
Add 'S' to usage, and put into correct place in options list.
PR/27213: Greg A. Woods: pax doesn't honour SIGPIPE when listing
But always exit, not just on SIGPIPE.
Properly handle "cpio" archives where the last hardlink includes the
data of a file. This fixes PR bin/26514.
PR/20228: Simon Burge: pax has problems reading a particular cpio archive
The problem here is that the archive is too short (< 512 bytes). The
buffer routines, try to read at least 512 bytes, even when we try to determine
what format file we have, which is wrong.
Don't leave arcn->org_name pointing to ftent->fts_path, if we being cpio
then ftent is freed just below. Take a copy of the name and point org_name
at the copy.
Should fix PR/30627 (the fix in the PR will break pax and tar!)
PR/30167: J.T. Conklin: NetBSD tar does not support GNU tar --no-recursion flag
Fix from PR#29290. Properly terminate the cpio_longopts struct so an unknown
option doesn't run off the end and core dump
Fix broken cpio(1) option handling:
- "cpio -i -t" should list the contents of a file, not extract it.
- Don't extract a file when only option "-d" is given.
Patch supplied by Paul Ripke in PR bin/26513.
PR/27212: Greg A. Woods: Accept "-C <dirname>" inside filelists in addition
to "-C\n<dirname>".
But we are not making it the default output option as the patch suggests.
PR/19490: Julio Merino: Teach tar about --sparse, -S option.
Do it for cpio too.
PR/27208: Greg A. Woods: pax must call options() before using syswarn()
or tty_warn()
PR/20071: Perry Metzger: --extract handling is broken. This patch fixes
Perry's example.
302 lines
7.5 KiB
Groff
302 lines
7.5 KiB
Groff
.\" $NetBSD: cpio.1,v 1.3 2005/12/01 03:00:01 minskim Exp $
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.\"
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.\" Copyright (c) 1997 SigmaSoft, Th. Lockert
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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 ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" OpenBSD: cpio.1,v 1.14 2000/11/10 17:52:02 aaron Exp
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.\"
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.Dd February 13, 2004
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.Dt CPIO 1
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.Os
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.Sh NAME
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.Nm cpio
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.Nd copy file archives in and out
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.Sh SYNOPSIS
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.Nm cpio
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.Fl o
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.Op Fl aABcLvzZ
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.Op Fl C Ar bytes
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.Op Fl F Ar archive
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.Op Fl H Ar format
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.Op Fl O Ar archive
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.Ar "\*[Lt] name-list"
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.Op Ar "\*[Gt] archive"
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.Nm cpio
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.Fl i
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.Op Fl bBcdfmrsStuvzZ6
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.Op Fl C Ar bytes
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.Op Fl E Ar file
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.Op Fl F Ar archive
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.Op Fl H Ar format
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.Op Fl I Ar archive
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.Op Ar "pattern ..."
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.Op Ar "\*[Lt] archive"
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.Nm cpio
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.Fl p
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.Op Fl adlLmuv
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.Ar destination-directory
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.Ar "\*[Lt] name-list"
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.Sh DESCRIPTION
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The
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.Nm
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command copies files to and from a
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.Nm
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archive.
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If the archive is of the form:
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.Ar [[user@]host:]file
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then the archive will be processed using
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.Xr rmt 8 .
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl o , -create
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Create an archive.
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Reads the list of files to store in the
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archive from standard input, and writes the archive on standard
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output.
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.Bl -tag -width Ds
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.It Fl a , -reset-access-time
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Reset the access times on files that have been copied to the
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archive.
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.It Fl A , -append
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Append to the specified archive.
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.It Fl B
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Set block size of output to 5120 bytes.
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.It Fl c
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Use ASCII format for
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.Nm
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header for portability.
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.It Fl C Ar bytes
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Set the block size of output to
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.Ar bytes .
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.It Fl F Ar archive
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.It Fl O Ar archive
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Use the specified file name as the archive to write to.
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.It Fl H Ar format
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Write the archive in the specified format.
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Recognized formats are:
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.Pp
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.Bl -tag -width sv4cpio -compact
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.It Ar bcpio
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Old binary
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.Nm
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format.
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.It Ar cpio
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Old octal character
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.Nm
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format.
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.It Ar sv4cpio
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SVR4 hex
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.Nm
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format.
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.It Ar tar
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Old tar format.
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.It Ar ustar
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POSIX ustar format.
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.El
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.It Fl L
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Follow symbolic links.
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.It Fl v
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Be verbose about operations.
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List filenames as they are written to the archive.
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.It Fl z
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Compress archive using
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.Xr gzip 1
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format.
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.It Fl Z
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Compress archive using
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.Xr compress 1
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format.
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.El
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.It Fl i , -extract
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Restore files from an archive.
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Reads the archive file from
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standard input and extracts files matching the
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.Ar patterns
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that were specified on the command line.
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.Bl -tag -width Ds
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.It Fl b
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Do byte and word swapping after reading in data from the
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archive, for restoring archives created on systems with
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a different byte order.
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.It Fl B
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Set the block size of the archive being read to 5120 bytes.
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.It Fl c
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Expect the archive headers to be in ASCII format.
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.It Fl C Ar bytes
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Read archive written with a block size of
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.Ar bytes .
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.It Fl d , -make-directories
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Create any intermediate directories as needed during
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restore.
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.It Fl E Ar file , Fl -pattern-file Ar file
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Read list of file name patterns to extract or list from
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.Ar file .
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.It Fl f , -nonmatching
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Restore all files except those matching the
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.Ar patterns
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given on the command line.
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.It Fl F Ar archive , Fl -file Ar archive
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.It Fl I Ar archive
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Use the specified file as the input for the archive.
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.It Fl H Ar format , Fl -format Ar format
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Read an archive of the specified format.
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Recognized formats are:
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.Pp
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.Bl -tag -width sv4cpio -compact
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.It Ar bcpio
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Old binary
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.Nm
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format.
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.It Ar cpio
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Old octal character
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.Nm
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format.
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.It Ar sv4cpio
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SVR4 hex
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.Nm
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format.
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.It Ar tar
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Old tar format.
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.It Ar ustar
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POSIX ustar format.
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.El
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.It Fl m
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Restore modification times on files.
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.It Fl r , -rename
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Rename restored files interactively.
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.It Fl s
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Swap bytes after reading data from the archive.
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.It Fl S , -swap-halfwords
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Swap words after reading data from the archive.
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.It Fl t , -list
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Only list the contents of the archive, no files or
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directories will be created.
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.It Fl u , -unconditional
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Overwrite files even when the file in the archive is
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older than the one that will be overwritten.
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.It Fl v , -verbose
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Be verbose about operations.
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List filenames as they are copied in from the archive.
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.It Fl z
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Uncompress archive using
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.Xr gzip 1
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format.
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.It Fl Z
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Uncompress archive using
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.Xr compress 1
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format.
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.It Fl 6
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Process old-style
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.Nm
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format archives.
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.El
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.It Fl p , -pass-through
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Copy files from one location to another in a single pass.
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The list of files to copy are read from standard input and
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written out to a directory relative to the specified
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.Ar directory
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argument.
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.Bl -tag -width Ds
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.It Fl a
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Reset the access times on files that have been copied.
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.It Fl d
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Create any intermediate directories as needed to write
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the files at the new location.
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.It Fl l , -link
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When possible, link files rather than creating an
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extra copy.
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.It Fl L , -dereference
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Follow symbolic links.
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.It Fl m , -preserve-modification-time
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Restore modification times on files.
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.It Fl u , -unconditional
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Overwrite files even when the original file being copied is
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older than the one that will be overwritten.
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.It Fl v , -verbose
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Be verbose about operations.
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List filenames as they are copied.
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.It Fl -force-local
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Do not interpret filenames that contain a
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.Sq \&:
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as remote files.
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.It Fl -insecure
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Normally
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.Nm
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ignores filenames that contain
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.Sq ..
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as a path component. With this option,
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files that contain
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.Sq ..
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can be processed.
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.El
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.El
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.Sh EXIT STATUS
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.Nm
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will exit with one of the following values:
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.Bl -tag -width 2n
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.It 0
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All files were processed successfully.
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.It 1
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An error occurred.
|
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.El
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.Pp
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Whenever
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.Nm
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cannot create a file or a link when extracting an archive or cannot
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find a file while writing an archive, or cannot preserve the user
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ID, group ID, file mode, or access and modification times when the
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.Fl p
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option is specified, a diagnostic message is written to standard
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error and a non-zero exit value will be returned, but processing
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will continue.
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In the case where
|
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.Nm
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cannot create a link to a file,
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.Nm
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will not create a second copy of the file.
|
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.Pp
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If the extraction of a file from an archive is prematurely terminated
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by a signal or error,
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.Nm
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may have only partially extracted the file the user wanted.
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Additionally, the file modes of extracted files and directories may
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have incorrect file bits, and the modification and access times may
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be wrong.
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.Pp
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If the creation of an archive is prematurely terminated by a signal
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or error,
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.Nm
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may have only partially created the archive which may violate the
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specific archive format specification.
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.Sh SEE ALSO
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.Xr pax 1 ,
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.Xr tar 1
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.Sh AUTHORS
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Keith Muller at the University of California, San Diego.
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.Sh BUGS
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The
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.Fl s
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and
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.Fl S
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options are currently not implemented.
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