the null mount, we currently create a temporary mfs on /tmp, copy
/etc to /tmp, then mount /etc as mfs and copy everything back from
/tmp, then delete the /tmp mfs.
The patch eliminates the temporary /tmp mfs and the subsequent
copying and simply populates the /etc mfs by copying from
/conf/default/etc. This requires that /conf/default/etc contain a
complete copy of all the /etc stuff instead of just overrides. I
don't think that is too much of an extra step in setting up a
diskless environment.
* Provide the ability to make /tmp a memory filesystem independent
of /var. This removes the requirement that /tmp be a symlink to
/var/tmp and this makes the diskless code work with the default
filesystem layout. If a seperate /tmp memory filesystem is
created, the 'tmpsize' environment variable is used to determine
its size (default to 10 Meg).
* Reduce diffs between the -current and -stable versions of these
files to a bare minimum. Only the definition of the shell
function 'mount_md' is different.
Not Objected to by: -arch@, -small@
MFC after: 2 days
o create a simple wrapper function mount_md that makes it easy to
move from mount_mfs.
# NOTE: you will need to MAKEDEV md[0123] in order for this to work.
Reviewed by: bsd, keichii
scripts may use to source safely overrides in ${rc_conf_files}
files.
This protects users who insist on the bad practice of copying
/etc/defaults/rc.conf to /etc/rc.conf from a recursive loop
that exhausts available file descriptors.
Several people have expressed interest in breaking this function
out into its own shell script. Anyone who wants to embark on
such an undertaking would do well to study the attributed PR.
PR: 17595
Reported by: adrian
Submitted by: Doug Barton <Doug@gorean.org>
in the 3.x branch. Also remove the dependency on /usr to find the
boot address/interface.
Mostly-submitted-abd-tested-by: MIHIRA Sanpei Yoshiro <sanpei@sanpei.org>
case instead of test where appropriate, since case allows case is a sh
builtin and (as a side-effect) allows case-insensitivity.
Changes discussed on freebsd-hackers.
Submitted by: Doug Barton <Doug@gorean.org>
