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Man Pages


Manual Reference Pages  -  ARCHIVEMOUNT (1)

NAME

archivemount - mounts an archive for access as a file system

CONTENTS

Synopsis
Description
Example Session
Archive Formats
Options
License
Known Bugs
See Also

SYNOPSIS

archivemount [-hVdfs] [-o options] archivepath mountpoint

DESCRIPTION

The archivemount command mounts the file tree contained in the archive archivepath on the directory mountpoint. The archive’s contents can subsequently be accessed inside mountpoint as a file system. The umount(8) command performs the corresponding unmount operation.

archivemount is known to work under both linux and Mac OS X (via MacFUSE).

EXAMPLE SESSION

Consider the gzipped tar archive ‘‘files.tgz’’ containing files ‘‘file1’’ and ‘‘file2’’, and an empty directory ‘‘mnt’’.

$ ls
files.tgz    mnt/

$ archivemount files.tgz mnt

$ ls mnt file1 file2

[... Perform desired read/write operations on the archive via mnt/ ...]

$ umount mnt

[... Any changes are saved to the archive ...]

ARCHIVE FORMATS

Archive format support is provided by the libarchive(3) library. Read operations are supported for:

o old-style tar archives,
o most variants of the POSIX ‘‘ustar’’ format,
o the POSIX ‘‘pax interchange’’ format,
o GNU-format tar archives,
o most common cpio archive formats,
o ISO9660 CD images (with or without RockRidge extensions),
o Zip archives.

Archives compressed with gzip(1), bzip2(1), or compress(1) are automatically detected and transparently decompressed.

The following formats can be written:

o POSIX-standard ‘‘ustar’’ archives,
o POSIX ‘‘pax interchange format’’ archives,
o POSIX octet-oriented cpio archives,
o two different variants of shar archives.

Before writing, the original archive is renamed with a ‘‘.orig’’ extension appended to it. More detail about the read/write support can be found in the libarchive(3) documentation.

OPTIONS

archivemount is built upon the FUSE (Filesystem in Userspace) library, and the complete set of available options depends upon the specific FUSE implementation. Execute archivemount -h to retrieve a definitive list.

    general options

-o opt,[opt...]
  mount options
-h --help
  print help
-V --version
  print version

    archivemount mount options

-o readonly
  disable write support
-o nobackup
  remove archive file backups

    FUSE mount options

These options are available to linux users using standard FUSE.

-d -o debug
  enable debug output (implies -f)
-f foreground operation
-s disable multi-threaded operation
-o allow_other
  allow access to other users
-o allow_root
  allow access to root
-o nonempty
  allow mounts over non-empty file/dir
-o default_permissions enable permission checking by kernel
-o fsname=NAME
  set filesystem name
-o subtype=NAME
  set filesystem type
-o large_read
  issue large read requests (2.4 only)
-o max_read=N
  set maximum size of read requests
-o hard_remove
  immediate removal (don’t hide files)
-o use_ino
  let filesystem set inode numbers
-o readdir_ino
  try to fill in d_ino in readdir
-o direct_io
  use direct I/O
-o kernel_cache
  cache files in kernel
-o [no]auto_cache
  enable caching based on modification times
-o umask=M
  set file permissions (octal)
-o uid=N set file owner
-o gid=N set file group
-o entry_timeout=T
  cache timeout for names (1.0s)
-o negative_timeout=T
  cache timeout for deleted names (0.0s)
-o attr_timeout=T
  cache timeout for attributes (1.0s)
-o ac_attr_timeout=T
  auto cache timeout for attributes (attr_timeout)
-o intr allow requests to be interrupted
-o intr_signal=NUM
  signal to send on interrupt (10)
-o modules=M1[:M2...]
  names of modules to push onto filesystem stack
-o max_write=N
  set maximum size of write requests
-o max_readahead=N
  set maximum readahead
-o async_read
  perform reads asynchronously (default)
-o sync_read
  perform reads synchronously
-o atomic_o_trunc
  enable atomic open+truncate support

    MacFUSE mount options

These options are available to Mac users using MacFUSE.

-o allow_other
  allow access to others besides the user who mounted the file system
-o allow_recursion
  allow a mount point that itself resides on a MacFUSE volume (by default, such mounting is disallowed)
-o allow_root
  allow access to root (can’t be used with allow_other)
-o auto_xattr
  handle extended attributes entirely through ._ files
-o blocksize=SIZE
  specify block size in bytes of "storage"
-o case_insensitive
  enable case-insensitive mode
-o daemon_timeout=T
  timeout in seconds for kernel calls to daemon
-o debug
  turn on debug information printing
-o default_permissions
  let the kernel handle permission checks locally
-o defer_permissions
  defer permission checks to file operations themselves
-o direct_io
  use alternative (direct) path for kernel-user I/O
-o extended_security
  turn on Mac OS X extended security (ACLs)
-o fsid=FSID
  set the second 32-bit component of the fsid
-o fsname=NAME
  set the file system’s name
-o fssubtype=NUM
  set the file system’s fssubtype identifier
-o fstypename=NAME
  set the file system’s type name
-o iosize=SIZE
  specify maximum I/O size in bytes
-o jail_symlinks
  contain symbolic links within the mount
-o kill_on_unmount
  kernel will send a signal (SIGKILL by default) to the daemon after unmount finishes
-o local
  mark the volume as ‘‘local’’ (default is ‘‘nonlocal’’)
-o negative_vncache
  enable vnode name caching of non-existent objects
-o volname=NAME
  set the file system’s volume name

-o noalerts
  disable all graphical alerts (if any) in MacFUSE Core
-o noappledouble
  ignore Apple Double (._) and .DS_Store files entirely
-o noapplexattr
  ignore all ‘‘com.apple.*’’ extended attributes
-o nobrowse
  mark the volume as non-browsable by the Finder
-o nolocalcaches
  meta option equivalent to noreadahead,noubc,novncache
-o noping_diskarb
  do not ping Disk Arbitration (pings by default)
-o noreadahead
  disable I/O read-ahead behavior for this file system
-o nosynconclose
  disable sync-on-close behavior (enabled by default)
-o nosyncwrites
  disable synchronous-writes behavior (dangerous)
-o noubc
  disable the unified buffer cache for this file system
-o novncache
  disable the vnode name cache for this file system

-o hard_remove
  immediate removal (don’t hide files)
-o use_ino
  let filesystem set inode numbers
-o readdir_ino
  try to fill in d_ino in readdir
-o direct_io
  use direct I/O
-o kernel_cache
  cache files in kernel
-o [no]auto_cache
  enable caching based on modification times
-o umask=M
  set file permissions (octal)
-o uid=N
  set file owner
-o gid=N
  set file group
-o entry_timeout=T
  cache timeout for names (1.0s)
-o negative_timeout=T
  cache timeout for deleted names (0.0s)
-o attr_timeout=T
  cache timeout for attributes (1.0s)
-o ac_attr_timeout=T
  auto cache timeout for attributes (attr_timeout)
-o intr
  allow requests to be interrupted
-o intr_signal=NUM
  signal to send on interrupt (30)
-o modules=M1[:M2...]
  names of modules to push onto filesystem stack

-o max_write=N
  set maximum size of write requests
-o max_readahead=N
  set maximum readahead
-o async_read
  perform reads asynchronously (default)
-o sync_read
  perform reads synchronously

    Module options

[subdir]
-o subdir=DIR
  prepend this directory to all paths (mandatory)
-o [no]rellinks
  transform absolute symlinks to relative
[iconv]
-o from_code=CHARSET
  original encoding of file names (default: UTF-8)
-o to_code=CHARSET
  new encoding of the file names (default: ISO-8859-2)

LICENSE

This sofware is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this software; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

KNOWN BUGS

This is beta software and should be treated as such. Bug reports to the AUTHORS listed below would be appreciated.

SEE ALSO

bzip2(1), compress(1), cpio(1), gzip(1), libarchive(3), pax(1), tar(1), umount(8), and zip(1)

‘‘Filesystem in Userspace’’: http://fuse.sourceforge.net/

‘‘MacFUSE’’: http://code.google.com/p/macfuse/

AUTHORS

Archivemount is written and maintained by Andre Landwehr <andrel@cybernoia.de>.

This man page was written by Tom Duck <tom.duck@dal.ca> with material drawn from the page for libarchive(3).

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ARCHIVEMOUNT version 0.6.1 ARCHIVEMOUNT (1) 1 November 2008

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