Disabled installation of cron, crontab by default. Fixed up all information files to reflect this.
This commit is contained in:
dale_mellor
parent
3725aedd02
commit
62b0403363
13 changed files with 118 additions and 98 deletions
6
BUGS
6
BUGS
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@ -1,4 +1,4 @@
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-*-text-*-
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-*-text-*-
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* If two users modify their crontabs simultaneously, there will be contention
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for /var/cron/update between themselves and with the main daemon.
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@ -9,5 +9,7 @@
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Coordinated Time (UTC).
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* As often as not the cron daemon crashes (segfaults) when crontab sends it a
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SIGHUP.
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SIGHUP. For this reason, the current release does not install cron or
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crontab.
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24
ChangeLog
24
ChangeLog
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@ -1,23 +1,7 @@
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2003-06-30 hydro23 <Dale Mellor <dale@dmellor.dabsol.co.uk>>
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2003-07-05 Dale Mellor <dale_mellor@users.sourceforge.net>
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* mcron.scm: Introduced arbiters to marshall access to updates
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structure between main routing and HUP signal action procedure.
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* crontab.scm: When an empty /tmp file is produced for editing,
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make it owned by the real user (so he can edit it).
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* mcron.scm, makefile.am: Check explicitly for root user when
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running cron personality. Install with only root execute
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permission.
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* mcron.scm: Don't create /var/run/cron.pid if the -s option has
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been used (this is an undocumented possibility).
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* configure.ac, config.scm.in: Added configure option
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--enable-debug to determine whether debugging and traceback should
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be turned on.
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* Version bumped to 0.99.2.
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* configure.ac, makefile.am: Disabled installation of cron,
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crontab programs by default as they are broken.
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2003-06-28 Dale Mellor <dale_mellor@users.sourceforge.net>
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@ -26,5 +10,3 @@
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testing...
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* Version set at 0.99.1
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16
NEWS
16
NEWS
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@ -1,11 +1,23 @@
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Historic moments in the life of mcron.
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Historic moments in the life of mcron. -*-text-*-
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Copyright (C) 1992, 1993, 1995-2002 Free Software Foundation, Inc.
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Copyright (C) 2003 Dale Mellor
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See the end for copying conditions.
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Please send bug reports to dale_mellor@users.sourceforge.net.
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Saturday, 5th July 2003
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Released version 0.99.1, with installation of cron and crontab disabled by
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default (suspect problems with Guile internals are preventing these from
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working properly). The CVS tag is release_0-99-1 (no branch has been created
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for it).
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Friday, 4th July 2003
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We have been accepted as a Savannah project. A CVS repository and web home
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page have been created. We're still waiting for acceptance as a GNU project.
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----------------------------------------------------------------------
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51
README
51
README
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@ -1,38 +1,51 @@
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-*-text-*-
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This is version 0.99.1 of the mcron program, designed and written by Dale
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Mellor, which replaces and hugely enhances Vixie cron. It is functionally
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complete, production quality code (did you expect less?), but has not received
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much testing yet and contains known bugs. It has only been built on a GNU/Linux
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system, and will most likely fail on others (but you never know...).
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Mcron is supposed to be 100% Vixie compatible. However, in the current release
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this is broken, and by default only 50% compatibility is installed.
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----------------------------------------------------------------------
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IMPORTANT NOTICES
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Read the BUGS file.
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Do not (yet) install this software on a machine which relies for its functioning
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on its current set of crontabs.
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By default, the cron and crontab programs are not installed, and mcron will
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happiliy coexist alongside any existing cron programs you have on your
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system. The Vixie-style programs can be installed by specifying --enable-vixie
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to the configure command, in which case you must take heed of the following
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notes.
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The package must be installed by root.
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Before installing this package for the first time, it is necessary to terminate
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any running cron daemons on your system. If your old cron is not accurately
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Vixie compatible (files in /var/cron/tabs*, /var/cron/allow, /var/cron/deny,
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/etc/crontab, /var/run/cron.pid) then you will need to clear out all old
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crontabs and make new ones afresh.
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Do not (yet) install this software on a machine which relies for its
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functioning on its current set of crontabs.
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If your old cron is Vixie, or very similar, mcron should fall right into place
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where your old cron was (the binaries cron and crontab will be replaced), and
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you should be able to continue to use your existing crontabs without noticing
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any changes. Bear in mind that if you use /etc/crontab, then changes to this
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file will *not* take immediate effect (this is the 1% incompatibility between
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mcron and Vixie cron); you may want to add a comment to this file with a note to
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this effect. Alternatively, use the new mcron program, it's better!
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The package must be installed by root.
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If you don't want to clobber your existing cron executables, you can specify the
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--program-prefix option to configure with a prefix ending in a non-alphabetic
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character, for example "m.", and then run the programs as m.mcron, m.cron and
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m.crontab.
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Before installing this package for the first time, it is necessary to
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terminate any running cron daemons on your system. If your old cron is not
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accurately Vixie compatible (files in /var/cron/tabs*, /var/cron/allow,
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/var/cron/deny, /etc/crontab, /var/run/cron.pid) then you will need to clear
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out all old crontabs and make new ones afresh.
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If your old cron is Vixie, or very similar, mcron should fall right into
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place where your old cron was (the binaries cron and crontab will be
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replaced), and you should be able to continue to use your existing crontabs
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without noticing any changes. Bear in mind that if you use /etc/crontab,
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then changes to this file will *not* take immediate effect (this is the 1%
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incompatibility between mcron and Vixie cron); you may want to add a comment
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to this file with a note to this effect. Alternatively, use the new mcron
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program, it's better!
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If you don't want to clobber your existing cron executables, you can specify
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the --program-prefix option to configure with a prefix ending in a
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non-alphabetic character, for example "m.", and then run the programs as
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m.mcron, m.cron and m.crontab.
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----------------------------------------------------------------------
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10
TODO
10
TODO
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@ -1,3 +1,5 @@
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-*-text-*-
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Maybe in the near future...
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* Logging.
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@ -16,8 +18,9 @@ There are no plans to actually do the following any time soon...
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* Full security audit for Vixie mode.
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* Move internal functions into a namespace such that configuration files
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cannot interfere with mcron itself.
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* Move internal functions into a namespace, or provide alternative
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environments, such that configuration files cannot interfere with mcron
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itself.
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@ -28,7 +31,8 @@ Quite likely to happen if version 2.0 ever materializes...
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* UNIX or TCP socket will allow interrogation and control of a running
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daemon (should be more reliable, efficient and useful than using the
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SIGHUP-/var/cron/update method).
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SIGHUP-/var/cron/update method). (I did already try this but, as with
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processes, Guile's use of threads falls over.)
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@ -24,4 +24,3 @@
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(define config-package-string "@PACKAGE_STRING@")
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(define config-package-bugreport "@PACKAGE_BUGREPORT@")
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(define config-sendmail "@SENDMAIL@")
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(define config-cat "@CAT@")
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37
configure.ac
37
configure.ac
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@ -21,29 +21,40 @@ fi
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AC_SUBST(CONFIG_DEBUG)
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AC_MSG_CHECKING([whether the (broken) Vixie programs are requested])
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AC_ARG_ENABLE(vixie,
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AC_HELP_STRING([--enable-vixie],
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[enable installation of cron and crontab programs]),
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CONFIG_ENABLE_VIXIE=$enableval,
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CONFIG_ENABLE_VIXIE=no)
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AC_MSG_RESULT($CONFIG_ENABLE_VIXIE)
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AC_SUBST(CONFIG_ENABLE_VIXIE)
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# We substitute the following commands into the makefile by configure, because
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# automake is confused by the ifeq command.
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IFEQ_VIXIE="ifeq (\$(CONFIG_ENABLE_VIXIE), yes)"
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AC_SUBST(IFEQ_VIXIE)
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ENDIF="endif"
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AC_SUBST(ENDIF)
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AC_PROG_CC
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GUILE_PROGS
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GUILE_FLAGS
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# Checks for programs.
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# AC_CHECK_PROG(CHMOD, chmod, chmod)
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AC_CHECK_PROGS(CHMOD, chmod)
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if test "x$ac_cv_prog_CHMOD" = "x"; then
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AC_MSG_ERROR(chmod not found)
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fi
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AC_CHECK_PROGS(ED, ed)
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if test "x$ac_cv_prog_ED" = "x"; then
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AC_MSG_ERROR(ed not found)
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fi
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AC_CHECK_PROGS(CAT, cat)
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if test "x$ac_cv_prog_CAT" = "x"; then
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AC_MSG_ERROR(cat not found)
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fi
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AC_CHECK_PROGS(WHICH, which)
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if test "x$ac_cv_prog_WHICH" = "x"; then
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AC_MSG_ERROR(which not found)
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fi
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# Now find a sendmail or equivalent.
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AC_CHECK_PROGS(SENDMAIL, sendmail)
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@ -66,14 +77,6 @@ fi
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SENDMAIL=$ac_cv_prog_SENDMAIL
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# Checks for libraries.
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# Checks for header files.
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# Checks for typedefs, structures, and compiler characteristics.
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# Checks for library functions.
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real_program_prefix=`echo $program_prefix | sed s/NONE//`
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AC_SUBST(real_program_prefix)
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19
crontab.scm
19
crontab.scm
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@ -82,8 +82,7 @@
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;; Iff the real user is root, he can use the -u option to access files of
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;; another user.
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(define crontab-user
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(option-ref options 'user crontab-real-user))
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(define crontab-user (option-ref options 'user crontab-real-user))
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@ -147,12 +146,11 @@
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((option-ref options 'edit #f)
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(let ((temp-file (string-append "/tmp/crontab." (number->string (getpid))))
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(editor (if (getenv "VISUAL") (getenv "VISUAL")
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(if (getenv "EDITOR") (getenv "EDITOR")
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"vi"))))
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(catch #t
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(lambda () (copy-file crontab-file temp-file))
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(lambda (key . args) (with-output-to-file temp-file (lambda () #t))))
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(editor (cond ((getenv "VISUAL") (getenv "VISUAL"))
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((getenv "EDITOR") (getenv "EDITOR"))
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(else "vi"))))
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(catch #t (lambda () (copy-file crontab-file temp-file))
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(lambda (key . args) (with-output-to-file temp-file noop)))
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(chown temp-file (getuid) (getgid))
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(system (string-append editor " " temp-file))
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(read-vixie-file temp-file)
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@ -167,7 +165,7 @@
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((option-ref options 'remove #f)
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(catch #t (lambda () (delete-file crontab-file)
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(hit-server crontab-user))
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(lambda (key . args) #t)))
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noop))
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;; In the case of the replace personality we loop over all the arguments on the
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@ -194,6 +192,5 @@
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;; used to put out, for total compatibility.
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(else
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(display
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"crontab: usage error: file name must be specified for replace.\n")
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(display "crontab: usage error: file name must be specified for replace.\n")
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(primitive-exit 15)))
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@ -36,14 +36,14 @@
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;; to control is added at the end of the list.
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(define (impose-default-environment env-alist passwd-entry)
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(append (list (cons "HOME" (passwd:dir passwd-entry))
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(cons "CWD" (passwd:dir passwd-entry))
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(cons "SHELL" (passwd:shell passwd-entry))
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'("TERM" . #f)
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'("TERMCAP" . #f))
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(append `(("HOME" . ,(passwd:dir passwd-entry))
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("CWD" . ,(passwd:dir passwd-entry))
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("SHELL" . ,(passwd:shell passwd-entry))
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("TERM" . #f)
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("TERMCAP" . #f))
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env-alist
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(list (cons "LOGNAME" (passwd:name passwd-entry))
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(cons "USER" (passwd:name passwd-entry)))))
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`(("LOGNAME" . ,(passwd:name passwd-entry))
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("USER" . ,(passwd:name passwd-entry)))))
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@ -41,21 +41,27 @@ mcron.c : config.scm mcron.scm vixie.scm environment.scm email.scm crontab.scm \
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@rm -f mcron.escaped.scm > /dev/null 2>&1
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install-exec-local:
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@IFEQ_VIXIE@
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@if [ `id -u` -ne 0 ]; then \
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echo "*** MUST BE ROOT TO INSTALL MCRON ***"; \
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exit 1; \
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fi
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@ENDIF@
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#full program prefix
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fpp = $(DESTDIR)$(bindir)/@real_program_prefix@
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install-exec-hook:
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@IFEQ_VIXIE@
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@rm -f $(fpp)cron$(EXEEXT) > /dev/null 2>&1
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@$(INSTALL) --mode='u=rwx' mcron$(EXEEXT) $(fpp)cron$(EXEEXT)
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@rm -f $(fpp)crontab$(EXEEXT) > /dev/null 2>&1
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@$(INSTALL) --mode='u=rwxs,og=rx' mcron$(EXEEXT) $(fpp)crontab$(EXEEXT)
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@ENDIF@
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./mkinstalldirs -m 'u=rwx' /var/cron
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./mkinstalldirs -m 'u=rwx,og=rx' /var/run
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uninstall-hook:
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@IFEQ_VIXIE@
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@rm -f $(fpp){cron,crontab}$(EXEEXT)
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@ENDIF@
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15
mcron.scm
15
mcron.scm
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@ -239,8 +239,7 @@ Report bugs to " config-package-bugreport ".\n
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(display " /var/run/cron.pid.)\n")
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(primitive-exit 1)))
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(if (not (option-ref options 'schedule #f))
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(with-output-to-file "/var/run/cron.pid"
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(lambda () #t)))
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(with-output-to-file "/var/run/cron.pid" noop))
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(setenv "MAILTO" #f)
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(c-set-cron-signals)))
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@ -604,19 +603,17 @@ Report bugs to " config-package-bugreport ".\n
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(use-modules (srfi srfi-2))
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(define (process-files-in-system-directory)
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;;; (catch #t (lambda ()
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(catch #t (lambda ()
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(let ((directory (opendir "/var/cron/tabs")))
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(do ((file-name (readdir directory) (readdir directory)))
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((eof-object? file-name) (closedir directory))
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(and-let* ((user (valid-user file-name)))
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(set! configuration-user user)
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(read-vixie-file (string-append "/var/cron/tabs/"
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file-name)))))
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;;; )
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;;; (lambda (key . args)
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;;; (display "You do not have permission to access the system crontabs.\n")
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;;; (primitive-exit 4)))
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)
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file-name))))))
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(lambda (key . args)
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(display "You do not have permission to access the system crontabs.\n")
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(primitive-exit 4))))
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@ -10,6 +10,12 @@
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This file documents the @code{mcron} command for running jobs at
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scheduled times.
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IMPORTANT NOTICE:
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IT IS VERY LIKELY THAT THE CRON AND CRONTAB PROGRAMS DESCRIBED IN THIS
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MANUAL HAVE NOT BEEN INSTALLED IN YOUR SYSTEM (THEY ARE CURRENTLY
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BROKEN). THUS, ONLY THE MCRON PERSONALITY IS CURRENTLY AVAILABLE FOR
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USE.
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Copyright (C) 2003 Dale Mellor
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This is free software. See the source files for the terms of the
|
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copyright.
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|
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@ -416,11 +416,10 @@
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((eof-object? line))
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;; If the line ends with \, append the next line.
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(do ()
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((or (< (string-length line) 1)
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(not (char=? (string-ref line
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(- (string-length line) 1))
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#\\))))
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(while ((and (>= (string-length line) 1)
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(char=? (string-ref line
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(- (string-length line) 1))
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#\\)))
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(let ((next-line (read-line port)))
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(if (eof-object? next-line)
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(set! next-line ""))
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