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To disable-shell.inc.
Interactive shells can be executed from certain development-related
programs (such as IDEs) and the shells themselves are not blocked by
default, but this shell startup directory currently is. To avoid
running a shell without access to potentially needed startup files, only
blacklist /etc/profile.d when interactive shells are also blocked.
Note that /etc/profile.d should only be of concern to interactive
shells, so a profile that includes both disable-shell.inc and
allow-bin-sh.inc (which likely means that it needs access to only
non-interactive shells) should not be affected by the blacklisting.
Relates to #3411 #5159.
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This reverts commit fe0f975f447d59977d90c3226cc8c623b31b20b3.
Note: This only reverts the changes from etc.
The 4 aliases introduced on commit 45f2ba544 are mere, well, aliases.
That is, they fail to address the different usability problems discussed
on [#3447][3447] and in fact only make things more confusing (as has
already been mentioned on [this][4379] and later comments). The main
reason is that the aliases do not meaningfully map to the original
commands. For example, the commands from each pair below seem like they
would do the exact same thing:
* `allow` and `nodeny`
* `deny` and `noallow`
Additionally, if these aliases are not the final commands, but only a
test/work-in-progress, then keeping the wide-scale search/replace
changes made on commit fe0f975f4 would only serve to cause confusion, as
users of firejail-git, contributors and downstream projects might start
changing the commands used on their profiles, only to later have to
change them again, potentially to completely different commands.
The sooner this is undone the better, as (besides the above reasons) the
more profile changes there are between the original commit and the
revert, the harder it is to e.g.: `git diff` versions of files across
the following revision ranges: before the commit, after the commit but
before the revert and after the revert. Note: This is still the case
even if a commit is [ignored by `git blame`][4390].
So let us revert fe0f975f4 and only reapply similar large-scale changes
once we have discussed and settled on better commands.
How the revert was applied: Despite using the auto-generated message
from `git revert`, to ensure correctness and to avoid conflicts the
changes were reverted in different steps: Firstly, revert the files
which can be safely reverted directly ("filestorevert"):
# Find out which files have been changed on fe0f975f44, but have not
# been changed afterwards and list them on "filestorevert"
git show --pretty='' --name-only fe0f975f44 -- etc | LC_ALL=C sort >allfiles
git diff --name-only fe0f975f44..master -- etc | LC_ALL=C sort >filestoignore
comm -2 -3 allfiles filestoignore >filestorevert
# Note: There are 3 extra files on filestoignore because they were
# added after commit fe0f975f44
wc -l allfiles filestoignore filestorevert | head -n 3
# 797 allfiles
# 8 filestoignore
# 792 filestorevert
# Automatically revert files in "filestorevert"
# See https://stackoverflow.com/a/23401018/10095231
tr '\n' '\000' <filestorevert | xargs -0 git show fe0f975f44 -- |
git apply --reverse
printf 'Total files reverted:\n'
git diff --name-only | wc -l
# 792
Secondly, do some search/replace on the rest:
tr '\n' '\000' <filestoignore | xargs -0 sed -i.bak \
-e 's/allow /whitelist /' -e 's/noallow /nowhitelist /' \
-e 's/deny /blacklist /' -e 's/nodeny /noblacklist /' \
-e 's/deny-nolog /blacklist-nolog /'
find etc -name '*.bak' -print0 | xargs -0 rm
Thirdly, verify the result. The following command shows the difference
between all the changes in etc from before fe0f975f44 and this commit
(inclusive):
git diff fe0f975f44~1 -- etc
From the output, it looks like all alias changes are fully reverted and
that the other changes to etc (from after fe0f975f44) remain, so the
revert seems to be done correctly.
[3447]: https://github.com/netblue30/firejail/issues/3447
[4379]: https://github.com/netblue30/firejail/issues/4379#issuecomment-876460222
[4390]: https://github.com/netblue30/firejail/issues/4390
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Kelvin M. Klann
netblue30
Ypnose
rusty-snake