imported Debian changes
This commit is contained in:
Guillaume Morin
parent
de20484ba5
commit
c5884b080d
8 changed files with 488 additions and 11 deletions
3
AUTHORS
3
AUTHORS
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@ -6,4 +6,7 @@ Contributions from Gord Matzigkeit <gord@enci.ucalgary.ca>.
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John Bazik wrote `fastcwd', the Perl subroutine for computing the
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current working directory.
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Charles Briscoe-Smith <cpbs@debian.org> wrote the fix to prevent
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stow -D / stow -R removing initially-empty directories.
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Stow is currently maintained by Guillaume Morin <gmorin@gnu.org>.
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@ -1,3 +1,9 @@
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Sun Dec 30 18:23:25 2001 Guillaume Morin <gmorin@gnu.org>
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* stow.in: now requires Perl 5. Use POSIX getcwd instead of broken
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fastcwd. Fixed bug when CommonParent is /. Stow does not remover
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initially empty directories anymore.
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Sun Dec 30 18:07:51 2001 Guillaume Morin <gmorin@gnu.org>
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* configure.in: automake fixes (fp_ -> AC, +AC_INIT_AUTOMAKE)
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4
INSTALL
4
INSTALL
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@ -1,8 +1,8 @@
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Basic Installation
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==================
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Stow is a Perl script. You must have Perl 4 or Perl 5 in order for it
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to run.
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Stow is a Perl script. You must have Perl 5.005 or later in order for
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it to run.
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The steps in building stow are:
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@ -4,6 +4,7 @@ AUTOMAKE_OPTIONS = dist-shar
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bin_SCRIPTS = stow
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info_TEXINFOS = stow.texi
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man8_MANS = stow.8
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CLEANFILES = stow manual.html manual.texi
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448
stow.8
Normal file
448
stow.8
Normal file
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@ -0,0 +1,448 @@
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.TH STOW 8 "28 March 1998"
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.SH NAME
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stow \- software package installation manager
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.SH SYNOPSIS
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.B stow
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.RI [ options ]
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.IR package ...
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.SH DESCRIPTION
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This manual page describes GNU Stow 1.3.2, a program for managing the
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installation of software packages. This is not the definitive
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documentation for stow; for that, see the info manual.
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.PP
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Stow is a tool for managing the installation of multiple software
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packages in the same run-time directory tree. One historical difficulty
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of this task has been the need to administer, upgrade, install, and
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remove files in independent packages without confusing them with other
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files sharing the same filesystem space. For instance, it is common to
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install Perl and Emacs in
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.IR /usr/local .
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When one does so, one winds up
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(as of Perl 4.036 and Emacs 19.22)
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with the following files in
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.IR /usr/local/man/man1 :
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.IR a2p.1 ;
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.IR ctags.1 ;
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.IR emacs.1 ;
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.IR etags.1 ;
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.IR h2ph.1 ;
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.IR perl.1 ;
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and
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.IR s2p.1 .
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Now
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suppose it's time to uninstall Perl. Which man pages get removed?
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Obviously
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.I perl.1
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is one of them, but it should not be the
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administrator's responsibility to memorize the ownership of individual
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files by separate packages.
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.PP
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The approach used by Stow is to install each package into its own
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tree, then use symbolic links to make it appear as though the files are
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installed in the common tree. Administration can be performed in the
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package's private tree in isolation from clutter from other packages.
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Stow can then be used to update the symbolic links. The structure of
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each private tree should reflect the desired structure in the common
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tree; i.e. (in the typical case) there should be a
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.I bin
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directory
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containing executables, a
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.I man/man1
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directory containing section 1 man
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pages, and so on.
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.PP
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Stow was inspired by Carnegie Mellon's Depot program, but is
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substantially simpler and safer. Whereas Depot required database files
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to keep things in sync, Stow stores no extra state between runs, so
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there's no danger (as there was in Depot) of mangling directories when
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file hierarchies don't match the database. Also unlike Depot, Stow will
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never delete any files, directories, or links that appear in a Stow
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directory (e.g.,
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.IR /usr/local/stow/emacs ),
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so it's always possible to
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rebuild the target tree (e.g.,
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.IR /usr/local ).
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.SH TERMINOLOGY
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A ``package'' is a related collection of files and directories that
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you wish to administer as a unit--e.g., Perl or Emacs--and that needs
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to be installed in a particular directory structure--e.g., with
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.IR bin ,
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.IR lib ,
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and
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.I man
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subdirectories.
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.PP
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A ``target directory'' is the root of a tree in which one or more
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packages wish to
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.B appear
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to be installed. A common, but by no means
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the only such location is
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.IR /usr/local .
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The examples in this manual page
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will use
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.I /usr/local
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as the target directory.
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.PP
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A ``stow directory'' is the root of a tree containing separate
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packages in private subtrees. When Stow runs, it uses the current
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directory as the default stow directory. The examples in this manual
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page will use
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.I /usr/local/stow
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as the stow directory, so that individual
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packages will be, for example,
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.I /usr/local/stow/perl
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and
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.IR /usr/local/stow/emacs .
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.PP
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An ``installation image'' is the layout of files and directories
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required by a package, relative to the target directory. Thus, the
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installation image for Perl includes: a
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.I bin
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directory containing
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.I perl
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and
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.I a2p
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(among others); an
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.I info
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directory containing Texinfo
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documentation; a
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.I lib/perl
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directory containing Perl libraries; and a
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.I man/man1
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directory containing man pages.
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.PP
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A ``package directory'' is the root of a tree containing the
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installation image for a particular package. Each package directory
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must reside in a stow directory--e.g., the package directory
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.I /usr/local/stow/perl
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must reside in the stow directory
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.IR /usr/local/stow .
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The ``name'' of a package is the name of its
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directory within the stow directory--e.g.,
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.IR perl .
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.PP
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Thus, the Perl executable might reside in
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.IR /usr/local/stow/perl/bin/perl ,
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where
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.I /usr/local
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is the target
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directory,
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.I /usr/local/stow
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is the stow directory,
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.I /usr/local/stow/perl
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is the package directory, and
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.I bin/perl
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within
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is part of the installation image.
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.PP
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A ``symlink'' is a symbolic link. A symlink can be ``relative'' or
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``absolute''. An absolute symlink names a full path; that is, one
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starting from
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.IR / .
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A relative symlink names a relative path; that is,
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one not starting from
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.IR / .
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The target of a relative symlink is
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computed starting from the symlink's own directory. Stow only creates
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relative symlinks.
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.SH OPTIONS
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The stow directory is assumed to be the current directory, and the
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target directory is assumed to be the parent of the current directory
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(so it is typical to execute
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.I stow
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from the directory
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.IR /usr/local/stow ).
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Each
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.I package
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given on the command line is the name of a package in the stow
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directory (e.g.,
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.IR perl ).
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By default, they are installed into the
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target directory (but they can be deleted instead using `-D').
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.TP
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.I -n
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.TP
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.I --no
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Do not perform any operations that modify the filesystem; merely
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show what would happen. Since no actual operations are performed,
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.I stow -n
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could report conflicts when none would actually take
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place (see ``Conflicts'' in the info manual);
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but it won't fail to report conflicts
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that
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.B would
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take place.
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.TP
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.I -c
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.TP
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.I --conflicts
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Do not exit immediately when a conflict is encountered. This
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option implies `-n', and is used to search for all conflicts that
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might arise from an actual Stow operation. As with `-n', however,
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false conflicts might be reported (see ``Conflicts'' in the info manual).
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.TP
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.I "-d DIR"
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.TP
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.I --dir=DIR
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Set the stow directory to DIR instead of the current directory.
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This also has the effect of making the default target directory be
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the parent of DIR.
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.TP
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.I "-t DIR"
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.TP
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.I --target=DIR
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Set the target directory to DIR instead of the parent of the stow
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directory.
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.TP
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.I -v
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.TP
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.I --verbose[=N]
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Send verbose output to standard error describing what Stow is
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doing. Verbosity levels are 0, 1, 2, and 3; 0 is the default.
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Using `-v' or `--verbose' increases the verbosity by one; using
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`--verbose=N' sets it to N.
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.TP
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.I -D
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.TP
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.I --delete
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Delete packages from the target directory rather than installing
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them.
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.TP
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.I -R
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.TP
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.I --restow
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Restow packages (first unstow, then stow again). This is useful
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for pruning obsolete symlinks from the target tree after updating
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the software in a package.
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.TP
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.I -V
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.TP
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.I --version
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Show Stow version number, and exit.
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.TP
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.I -h
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.TP
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.I --help
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Show Stow command syntax, and exit.
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.SH "INSTALLING PACKAGES"
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The default action of Stow is to install a package. This means
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creating symlinks in the target tree that point into the package tree.
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Stow attempts to do this with as few symlinks as possible; in other
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words, if Stow can create a single symlink that points to an entire
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subtree within the package tree, it will choose to do that rather than
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create a directory in the target tree and populate it with symlinks.
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.PP
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For example, suppose that no packages have yet been installed in
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.IR /usr/local ;
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it's completely empty (except for the
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.I stow
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subdirectory, of course). Now suppose the Perl package is installed.
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Recall that it includes the following directories in its installation
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image:
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.IR bin ;
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.IR info ;
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.IR lib/perl ;
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.IR man/man1 .
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Rather than creating
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||||
the directory
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.I /usr/local/bin
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and populating it with symlinks to
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.I ../stow/perl/bin/perl
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and
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.I ../stow/perl/bin/a2p
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(and so on), Stow
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will create a single symlink,
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.IR /usr/local/bin ,
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which points to
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.IR stow/perl/bin .
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In this way, it still works to refer to
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.I /usr/local/bin/perl
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and
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.IR /usr/local/bin/a2p ,
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and fewer symlinks have
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been created. This is called ``tree folding'', since an entire subtree
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is ``folded'' into a single symlink.
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.PP
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To complete this example, Stow will also create the symlink
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.I /usr/local/info
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pointing to
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.IR stow/perl/info ;
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the symlink
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.I /usr/local/lib
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pointing to
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.IR stow/perl/lib ;
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and the symlink
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.I /usr/local/man
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||||
pointing to
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.IR stow/perl/man .
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.PP
|
||||
Now suppose that instead of installing the Perl package into an empty
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target tree, the target tree is not empty to begin with. Instead, it
|
||||
contains several files and directories installed under a different
|
||||
system-administration philosophy. In particular,
|
||||
.I /usr/local/bin
|
||||
already exists and is a directory, as are
|
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.I /usr/local/lib
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||||
and
|
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.IR /usr/local/man/man1 .
|
||||
In this case, Stow will descend into
|
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.I /usr/local/bin
|
||||
and create symlinks to
|
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.I ../stow/perl/bin/perl
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||||
and
|
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.I ../stow/perl/bin/a2p
|
||||
(etc.), and it will descend into
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.I /usr/local/lib
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||||
and create the tree-folding symlink
|
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.I perl
|
||||
pointing to
|
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.IR ../stow/perl/lib/perl ,
|
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and so on. As a rule, Stow only descends as
|
||||
far as necessary into the target tree when it can create a tree-folding
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symlink.
|
||||
.PP
|
||||
The time often comes when a tree-folding symlink has to be undone
|
||||
because another package uses one or more of the folded subdirectories in
|
||||
its installation image. This operation is called ``splitting open'' a
|
||||
folded tree. It involves removing the original symlink from the target
|
||||
tree, creating a true directory in its place, and then populating the
|
||||
new directory with symlinks to the newly-installed package
|
||||
.B and
|
||||
to the
|
||||
old package that used the old symlink. For example, suppose that after
|
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installing Perl into an empty
|
||||
.IR /usr/local ,
|
||||
we wish to install Emacs.
|
||||
Emacs's installation image includes a
|
||||
.I bin
|
||||
directory containing the
|
||||
.I emacs
|
||||
and
|
||||
.I etags
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||||
executables, among others. Stow must make these
|
||||
files appear to be installed in
|
||||
.IR /usr/local/bin ,
|
||||
but presently
|
||||
.I /usr/local/bin
|
||||
is a symlink to
|
||||
.IR stow/perl/bin .
|
||||
Stow therefore takes
|
||||
the following steps: the symlink
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||||
.I /usr/local/bin
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||||
is deleted; the
|
||||
directory
|
||||
.I /usr/local/bin
|
||||
is created; links are made from
|
||||
.I /usr/local/bin
|
||||
to
|
||||
.I ../stow/emacs/bin/emacs
|
||||
and
|
||||
.IR ../stow/emacs/bin/etags ;
|
||||
and links are made from
|
||||
.I /usr/local/bin
|
||||
to
|
||||
.I ../stow/perl/bin/perl
|
||||
and
|
||||
.IR ../stow/perl/bin/a2p .
|
||||
.PP
|
||||
When splitting open a folded tree, Stow makes sure that the symlink
|
||||
it is about to remove points inside a valid package in the current stow
|
||||
directory.
|
||||
.BR "Stow will never delete anything that it doesn't own" .
|
||||
Stow ``owns'' everything living in the target tree that points into a
|
||||
package in the stow directory. Anything Stow owns, it can recompute if
|
||||
lost. Note that by this definition, Stow doesn't ``own'' anything
|
||||
.B in
|
||||
the stow directory or in any of the packages.
|
||||
.PP
|
||||
If Stow needs to create a directory or a symlink in the target tree
|
||||
and it cannot because that name is already in use and is not owned by
|
||||
Stow, then a conflict has arisen. See ``Conflicts'' in the info manual.
|
||||
.SH "DELETING PACKAGES"
|
||||
When the `-D' option is given, the action of Stow is to delete a
|
||||
package from the target tree. Note that Stow will not delete anything
|
||||
it doesn't ``own''. Deleting a package does
|
||||
.B not
|
||||
mean removing it from
|
||||
the stow directory or discarding the package tree.
|
||||
.PP
|
||||
To delete a package, Stow recursively scans the target tree,
|
||||
skipping over the stow directory (since that is usually a subdirectory
|
||||
of the target tree) and any other stow directories it encounters (see
|
||||
``Multiple stow directories'' in the info manual). Any symlink it finds that points into
|
||||
the package being deleted is removed. Any directory that contained
|
||||
only symlinks to the package being deleted is removed. Any directory
|
||||
that, after removing symlinks and empty subdirectories, contains only
|
||||
symlinks to a single other package, is considered to be a previously
|
||||
``folded'' tree that was ``split open.'' Stow will re-fold the tree by
|
||||
removing the symlinks to the surviving package, removing the directory,
|
||||
then linking the directory back to the surviving package.
|
||||
.SH "SEE ALSO"
|
||||
The info manual ``Stow 1.3.2:
|
||||
Managing the installation of software packages''
|
||||
by Bob Glickstein, Zanshin Software, Inc.
|
||||
.SH BUGS
|
||||
Please report bugs in Stow using the Debian bug tracking system.
|
||||
.PP
|
||||
Currently known bugs include:
|
||||
.IP *
|
||||
The empty-directory problem. If package FOO includes an empty
|
||||
directory--say, FOO/BAR--then:
|
||||
.IP
|
||||
1.
|
||||
if no other package has a BAR subdirectory, everything's fine.
|
||||
.IP
|
||||
2.
|
||||
if another stowed package, QUUX, has a BAR subdirectory, then
|
||||
when stowing, TARGETDIR/BAR will be ``split open'' and the
|
||||
contents of QUUX/BAR will be individually stowed. So far, so
|
||||
good. But when unstowing QUUX, TARGETDIR/BAR will be
|
||||
removed, even though FOO/BAR needs it to remain. A
|
||||
workaround for this problem is to create a file in FOO/BAR as
|
||||
a placeholder. If you name that file
|
||||
.IR .placeholder ,
|
||||
it will
|
||||
be easy to find and remove such files when this bug is fixed.
|
||||
.IP *
|
||||
When using multiple stow directories (see ``Multiple stow
|
||||
directories'' in the info manual), Stow fails to ``split open'' tree-folding symlinks
|
||||
(see ``Installing packages'' in the info manual) that point into a stow directory
|
||||
which is not the one in use by the current Stow command. Before
|
||||
failing, it should search the target of the link to see whether
|
||||
any element of the path contains a
|
||||
.I .stow
|
||||
file. If it finds one,
|
||||
it can ``learn'' about the cooperating stow directory to
|
||||
short-circuit the
|
||||
.I .stow
|
||||
search the next time it encounters a
|
||||
tree-folding symlink.
|
||||
.SH AUTHOR
|
||||
This man page was constructed by Charles Briscoe-Smith from
|
||||
parts of Stow's info manual. That manual contained the following
|
||||
notice, which, as it says, applied to this manual page, too. The text
|
||||
of the section entitled ``GNU General Public License'' can be found in
|
||||
the file
|
||||
.I /usr/share/common-licenses/GPL
|
||||
on any Debian GNU/Linux system. If you don't have access to a Debian
|
||||
system, or the GPL is not there, write to the Free Software Foundation,
|
||||
Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA.
|
||||
.IP
|
||||
Software and documentation Copyright (C) 1993, 1994, 1995, 1996 by
|
||||
Bob Glickstein <bobg+stow@zanshin.com>.
|
||||
.IP
|
||||
Permission is granted to make and distribute verbatim copies of this
|
||||
manual provided the copyright notice and this permission notice are
|
||||
preserved on all copies.
|
||||
.IP
|
||||
Permission is granted to copy and distribute modified versions of
|
||||
this manual under the conditions for verbatim copying, provided also
|
||||
that the section entitled ``GNU General Public License'' is included with
|
||||
the modified manual, and provided that the entire resulting derived
|
||||
work is distributed under the terms of a permission notice identical to
|
||||
this one.
|
||||
.IP
|
||||
Permission is granted to copy and distribute translations of this
|
||||
manual into another language, under the above conditions for modified
|
||||
versions, except that this permission notice may be stated in a
|
||||
translation approved by the Free Software Foundation.
|
||||
29
stow.in
29
stow.in
|
|
@ -1,8 +1,9 @@
|
|||
#!@PERL@
|
||||
|
||||
# GNU Stow - manage the installation of multiple software packages
|
||||
# Copyright 1993, 1994, 1995, 1996 by Bob Glickstein
|
||||
#
|
||||
# Copyright (C) 1993, 1994, 1995, 1996 by Bob Glickstein
|
||||
# Copyright (C) 2000,2001 Guillaume Morin
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 2 of the License, or
|
||||
|
|
@ -17,6 +18,9 @@
|
|||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
require 5.005;
|
||||
use POSIX;
|
||||
|
||||
$ProgramName = $0;
|
||||
$ProgramName =~ s,.*/,,;
|
||||
|
||||
|
|
@ -27,7 +31,7 @@ $Delete = 0;
|
|||
$NotReally = 0;
|
||||
$Verbose = 0;
|
||||
$ReportHelp = 0;
|
||||
$Stow = &fastcwd;
|
||||
$Stow = undef;
|
||||
$Target = undef;
|
||||
$Restow = 0;
|
||||
|
||||
|
|
@ -105,10 +109,15 @@ while (@ARGV && ($_ = $ARGV[0]) && /^-/) {
|
|||
|
||||
&usage("No packages named") unless @ARGV;
|
||||
|
||||
if ($Stow) {
|
||||
chdir($Stow) || die "Cannot chdir to target tree $Stow ($!)\n";
|
||||
}
|
||||
$Stow = &getcwd;
|
||||
|
||||
$Target = &parent($Stow) unless $Target;
|
||||
|
||||
chdir($Target) || die "Cannot chdir to target tree $Target ($!)\n";
|
||||
$Target = &fastcwd;
|
||||
$Target = &getcwd;
|
||||
|
||||
foreach $package (@ARGV) {
|
||||
$package =~ s,/+$,,; # delete trailing slashes
|
||||
|
|
@ -149,8 +158,13 @@ sub RelativePath {
|
|||
local(@b) = split(/\/+/, $b);
|
||||
local(@c) = split(/\/+/, $c);
|
||||
|
||||
splice(@a, 0, @c + 0);
|
||||
splice(@b, 0, @c + 0);
|
||||
# if $c == "/something", scalar(@c) >= 2
|
||||
# but if $c == "/", scalar(@c) == 0
|
||||
# but we want 1
|
||||
my $length = scalar(@c) ? scalar(@c) : 1;
|
||||
splice(@a, 0, $length);
|
||||
splice(@b, 0, $length);
|
||||
|
||||
unshift(@b, (('..') x (@a + 0)));
|
||||
&JoinPaths(@b);
|
||||
}
|
||||
|
|
@ -178,6 +192,7 @@ sub Unstow {
|
|||
local(@stowmember);
|
||||
local($pure, $othercollection) = (1, '');
|
||||
local($subpure, $subother);
|
||||
local($empty) = (1);
|
||||
local(@puresubdirs);
|
||||
|
||||
return (0, '') if (&JoinPaths($Target, $targetdir) eq $Stow);
|
||||
|
|
@ -190,6 +205,7 @@ sub Unstow {
|
|||
closedir(DIR);
|
||||
foreach $content (@contents) {
|
||||
next if (($content eq '.') || ($content eq '..'));
|
||||
$empty = 0;
|
||||
if (-l &JoinPaths($Target, $targetdir, $content)) {
|
||||
($linktarget = readlink(&JoinPaths($Target,
|
||||
$targetdir,
|
||||
|
|
@ -240,6 +256,7 @@ sub Unstow {
|
|||
$pure = 0;
|
||||
}
|
||||
}
|
||||
$pure = 0 if $empty;
|
||||
if ((!$pure || !$targetdir) && @puresubdirs) {
|
||||
&CoalesceTrees($targetdir, $stow, @puresubdirs);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,6 +7,10 @@
|
|||
@c @setchapternewpage odd
|
||||
@c @footnotestyle separate
|
||||
@c %**end of header
|
||||
@dircategory Administration
|
||||
@direntry
|
||||
* Stow: (stow). GNU Stow.
|
||||
@end direntry
|
||||
|
||||
@include version.texi
|
||||
|
||||
|
|
@ -16,6 +20,7 @@ managing the installation of software packages.
|
|||
|
||||
Software and documentation Copyright @copyright{} 1993, 1994, 1995, 1996
|
||||
by Bob Glickstein <bobg+stow@@zanshin.com>.
|
||||
Copyright @copyright{} 2000,2001 Guillaume Morin <gmorin@@gnu.org>
|
||||
|
||||
Permission is granted to make and distribute verbatim copies of this
|
||||
manual provided the copyright notice and this permission notice are
|
||||
|
|
|
|||
|
|
@ -1,3 +0,0 @@
|
|||
@set UPDATED 11 October 1996
|
||||
@set EDITION 1.3.2
|
||||
@set VERSION 1.3.2
|
||||
Loading…
Reference in a new issue