build: Move all path specification to global.mk

It's not possible to evaluate directory variables at configure
time, even with eval.  Move all preprocessor definitions to
DEFS in global.mk.

Note that this also required changing the substitution mechanism
in the manual pages, which have been changed to source a
generated config.man fragment, which is sourced using the .so
directive, and the manual page generated using soelim(1).
The boilerplate for the authors and copyright sections has also
been split out at the same time.

1 files changed, 264 insertions, 0 deletions

diff --git a/man/dchroot-dsa.1.man b/man/dchroot-dsa.1.man
new file mode 100644
index 00000000..3f5428cd
--- /dev/null
+++ b/man/dchroot-dsa.1.man
@@ -0,0 +1,264 @@
+.\" Copyright © 2005-2010  Roger Leigh <rleigh@debian.org>
+.\"
+.\" schroot 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 3 of the License, or
+.\" (at your option) any later version.
+.\"
+.\" schroot 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
+.\" General Public License for more details.
+.\"
+.\" You should have received a copy of the GNU General Public License
+.\" along with this program.  If not, see
+.\" <http://www.gnu.org/licenses/>.
+.\"
+.so config.man
+.ds PROGRAM dchroot\-dsa
+.TH DCHROOT-DSA 1 "\*[RELEASE_DATE_S]" "Version \*[VERSION]" "Debian sbuild"
+.SH NAME
+dchroot\-dsa \- enter a chroot environment
+.SH SYNOPSIS
+.B dchroot\-dsa
+.RB [ \-h \[or] \-\-help " \[or] " \-V \[or] \-\-version
+.RB " \[or] " \-l \[or] \-\-list " \[or] " \-i \[or] \-\-info
+.RB " \[or] " \-\-config " \[or] " -p | \-\-listpaths ]
+.RB [ "\-d \fIdirectory\fP" \[or] "\-\-directory=\fIdirectory\fP" ]
+.RB [ \-q \[or] \-\-quiet " \[or] " \-v \[or] \-\-verbose ]
+.RB [ "\-c \fIchroot\fP" \[or] "\-\-chroot=\fIchroot\fP"
+.RB " \[or] " \-\-all " \[or] " CHROOT]
+.RB [ COMMAND ]
+.SH DESCRIPTION
+\fBdchroot\-dsa\fP allows the user to run a command or a login shell in a
+chroot environment.  If no command is specified, a login shell will be started
+in the user's home directory inside the chroot.
+.PP
+The user's environment will be preserved inside the chroot.
+.PP
+The command is a single argument which must be an absolute path to the program.
+Additional options are not permitted.
+.PP
+The directory the command or login shell is run in depends upon the context.
+See \fI\-\-directory\fP option below for a complete description.
+.PP
+This version of dchroot\-dsa is a compatibility wrapper around the
+.BR schroot (1)
+program.  It is provided for backward compatibility with the dchroot\-dsa
+command-line options, but schroot is recommended for future use.  See the
+section \[lq]\fIMigration\fP\[rq] below for help migrating your existing
+dchroot\-dsa configuration to schroot.  See the section
+\[lq]\fIIncompatibilities\fP\[rq] below for known incompatibilities with older
+versions of dchroot\-dsa.
+.PP
+.SH OPTIONS
+\fBdchroot\-dsa\fP accepts the following options:
+.SS Basic options
+.TP
+.BR \-h ", " \-\-help
+Show help summary.
+.TP
+.BR \-a ", " \-\-all
+Select all chroots.  Note that earlier versions of dchroot\-dsa did not include
+this option.
+.TP
+.BR \-c ", " \-\-chroot=\fIchroot\fP
+Specify a chroot to use.  This option may be used multiple times to specify
+more than one chroot, in which case its effect is similar to \fI\-\-all\fP.  If
+this option is not used, the first non-option argument specified the chroot to
+use.  Note that earlier versions of dchroot\-dsa did not include this option.
+.TP
+.BR \-l ", " \-\-list
+List all available chroots.
+.TP
+.BR \-i ", " \-\-info
+Print detailed information about the available chroots.  Note that earlier
+versions of dchroot\-dsa did not include this option.
+.TP
+.BR \-p ", " \-\-listpaths
+Print absolute locations (paths) of the available chroots.
+.TP
+.BR \-\-config
+Print configuration of the available chroots.  This is useful for testing that
+the configuration in use is the same as the configuration file.  Any comments
+in the original file will be missing.  Note that earlier versions of
+dchroot\-dsa did not include this option.
+.TP
+.BR \-d ", " \-\-directory=\fIdirectory\fP
+Change to \fIdirectory\fP inside the chroot before running the command or login
+shell.  If \fIdirectory\fP is not available, dchroot\-dsa will exit with an
+error status.
+.IP
+The default behaviour (all directory paths are inside the chroot) is to run the
+login shell or command in the user's home directory, or \fI/\fP if the home
+directory is not available.  If none of the directories are available,
+dchroot\-dsa will exit with an error status.
+.TP
+.BR \-q ", " \-\-quiet
+Print only essential messages.  Note that earlier versions of dchroot\-dsa did
+not include this option.
+.TP
+.BR \-v ", " \-\-verbose
+Print all messages.  Note that earlier versions of dchroot\-dsa did not include
+this option.
+.TP
+.BR \-V ", " \-\-version
+Print version information.
+.SH CONFIGURATION
+The original \fBdchroot\-dsa\fP configuration file, \fI\*[DCHROOT_CONF]\fP, used
+by earlier versions of dchroot\-dsa, has the following format:
+.IP \[bu]
+\[oq]#\[cq] starts a comment line.
+.IP \[bu]
+Blank lines are ignored.
+.IP \[bu]
+Chroot definitions are a single line containing an \f[CBI]identifier\fP,
+\f[CBI]path\fP, and \f[CBI]users\fP, an optional user list separated by
+whitespace (space and tab), or a colon (\[oq]:\[cq]), semicolon (\[oq];\[cq]),
+or comma (\[oq],\[cq]).
+.PP
+An example file:
+.PP
+.RS
+\f[CR]# Example comment\fP
+.br
+\f[CR]\fP
+.br
+\f[CR]sarge /srv/chroot/sarge\fP
+.br
+\f[CR]sid /srv/chroot/sid rleigh,fred\fP
+.br
+.RE
+.PP
+This file defines a chroot called \[oq]sarge\[cq], located at
+\fI/srv/chroot/sarge\fP, and a second chroot called \[oq]sid\[cq], located at
+\fI/srv/chroot/sid\fP.  The second chroot specifies that it may only be used by
+the users \[lq]rleigh\[rq] and \[lq]fred\[rq].
+.SH INCOMPATIBILITIES
+.SS DSA dchroot
+.IP \[bu]
+Log messages are worded and formatted differently.
+.IP \[bu]
+dchroot\-dsa provides a restricted subset of the functionality implemented by
+\fBschroot\fP, but is still schroot underneath.  Thus dchroot\-dsa is still
+subject to schroot security checking, including PAM authentication and
+authorisation, and session management, for example, and hence may behave
+slightly differently to earlier versions of dchroot\-dsa in some circumstances.
+.SS Debian dchroot
+A \fBdchroot\fP package provides an alternative dchroot implementation.
+.IP \[bu]
+All the above incompatibilities apply.
+.IP \[bu]
+This version of dchroot has incompatible command-line options, and while some
+of those options are supported or have equivalent options by a different name,
+the \fI\-c\fP option is required to specify a chroot.  It also allows a shell
+script to be used as the option instead of a single absolute path, and allows
+multiple command options instead of a single option.
+.IP \[bu]
+This version of dchroot has an incompatible format for \fIdchroot.conf\fP.
+While the first two fields are the same, the third field is a optional
+\f[CBI]personality\fP, instead of the \f[CI]users\fP user list permitted to
+access the chroot allowed by this version.  If personality support is needed,
+please use \fIschroot.conf\fP and add the allowed users there, as shown in
+\[lq]\fIMigration\fP\[rq] below.
+.SH MIGRATION
+To migrate an existing \fBdchroot\-dsa\fP configuration to \fBschroot\fP,
+perform the following steps:
+.IP 1
+Dump the dchroot\-dsa configuration in schroot keyfile format to
+\fI\*[SCHROOT_CONF]\fP.
+.PP
+.RS
+\f[CR]# \f[CB]dchroot\-dsa --config >> \*[SCHROOT_CONF]
+.br
+.RE
+.PP
+.IP 2
+Edit \fI\*[SCHROOT_CONF]\fP to add access to the users and/or groups which are to
+be allowed to access the chroots, and make any other desired changes to the
+configuration.  See
+.BR schroot.conf (5).
+.IP 3
+Remove \fI\*[DCHROOT_CONF]\fP, so that dchroot\-dsa will subsequently use
+\fI\*[SCHROOT_CONF]\fP for its configuration.
+.SH EXAMPLES
+\f[CR]$ \f[CB]dchroot\-dsa -l\fP\fP
+.br
+\f[CR]Available chroots: sarge, sid\fP
+.br
+\f[CR]\fP
+.br
+\f[CR]$ \f[CB]dchroot\-dsa \-\-listpaths\fP\fP
+.br
+\f[CR]/srv/chroot/sarge\fP
+.br
+\f[CR]/srv/chroot/sid\fP
+.br
+\f[CR]\fP
+.br
+\f[CR]$ \f[CB]dchroot\-dsa \-q sid \-\- /bin/uname\fP\fP
+.br
+\f[CR]Linux\fP
+.br
+\f[CR]\fP
+.br
+\f[CR]$ \f[CB]dchroot\-dsa sid\fP\fP
+.br
+\f[CR]I: [sid chroot] Running login shell: \[lq]/bin/bash\[rq]\fP
+.br
+\f[CR]$ \fP
+.br
+.LP
+Note that the top line was echoed to standard error, and the remaining lines to
+standard output.  This is intentional, so that program output from commands run
+in the chroot may be piped and redirected as required; the data will be the
+same as if the command was run directly on the host system.
+.SH TROUBLESHOOTING
+If something is not working, and it's not clear from the error messages what is
+wrong, try using the \fB\-\-debug=\fP\fIlevel\fP option to turn on debugging
+messages.  This gives a great deal more information.  Valid debug levels are
+\[oq]none\[cq], and \[oq]notice\[cq], \[oq]info\[cq], \[oq]warning\[cq] and
+\[oq]critical\[cq] in order of increasing severity.  The lower the severity
+level, the more output.
+.PP
+If you are still having trouble, the developers may be contacted on the mailing
+list:
+.br
+\f[CR]Debian\ buildd-tools\ Developers
+.br
+<buildd-tools-devel@lists.alioth.debian.org>\fP
+.SH BUGS
+None known at this time.
+.SH FILES
+.TP
+\f[BI]\*[DCHROOT_CONF]\fP
+The system-wide \fBdchroot\-dsa\fP chroot definition file.  This file must be
+owned by the root user, and not be writable by other.  If present, this file
+will be used in preference to \fI\*[SCHROOT_CONF]\fP.
+.TP
+\f[BI]\*[SCHROOT_CONF]\fP
+The system-wide \fBschroot\fP definition file.  This file must be owned by the
+root user, and not be writable by other.  It is recommended that this file be
+used in preference to \fI\*[DCHROOT_CONF]\fP, because the chroots can be used
+interchangeably with schroot, and the user and group security policies provided
+by schroot are also enforced.
+.so authors.man
+.PP
+This implementation of dchroot\-dsa uses the same command-line options as
+the \fBdchroot\fP found on machines run by the Debian System Administrators for
+the Debian Project.  These machines have a \fBdchroot-dsa\fP source package
+which provides a \fBdchroot\-dsa\fP package, written by Ben Collins
+\f[CR]<bcollins@debian.org>\fP and Martin Schulze \f[CR]<joey@debian.org>\fP.
+.so copyright.man
+.SH SEE ALSO
+.BR schroot (1),
+.BR sbuild (1),
+.BR chroot (2),
+.BR schroot-setup (5),
+.BR schroot.conf (5).
+.\"#
+.\"# The following sets edit modes for GNU EMACS
+.\"# Local Variables:
+.\"# mode:nroff
+.\"# fill-column:79
+.\"# End: