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smack: label /etc/mtab as "_" when '--with-smack-run-label' is enabled.

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/etc/mtab should be labeled as "_", even though systemd has its own
smack label using '--with-smack-run-label' configuration. This is mainly
because all processes could read that file and the origin of this file
(i.e. /proc/mounts) is labeled as "_". This labels /etc/mtab as "_" when
'--with-smack-run-label' is enabled.
This commit is contained in:
Sangjung Woo 2015-09-10 21:52:39 +09:00
parent f33be31198
commit 1fab0cbafc
2 changed files with 9 additions and 1 deletions
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7
configure.ac
View file

@ -657,12 +657,17 @@ if test "x${have_smack}" = xauto; then
have_smack=yes
fi
have_smack_run_label=no
AC_ARG_WITH(smack-run-label,
AS_HELP_STRING([--with-smack-run-label=STRING],
[run systemd --system itself with a specific SMACK label]),
[AC_DEFINE_UNQUOTED(SMACK_RUN_LABEL, ["$withval"], [Run systemd itself with SMACK label])],
[AC_DEFINE_UNQUOTED(SMACK_RUN_LABEL, ["$withval"], [Run systemd itself with SMACK label]) have_smack_run_label=yes],
[])
if test "x${have_smack_run_label}" = xyes; then
M4_DEFINES="$M4_DEFINES -DHAVE_SMACK_RUN_LABEL"
fi
AC_ARG_WITH(smack-default-process-label,
AS_HELP_STRING([--with-smack-default-process-label=STRING],
[default SMACK label for executed processes]),

3
tmpfiles.d/etc.conf.m4
View file

@ -10,6 +10,9 @@
L /etc/os-release - - - - ../usr/lib/os-release
L /etc/localtime - - - - ../usr/share/zoneinfo/UTC
L+ /etc/mtab - - - - ../proc/self/mounts
m4_ifdef(`HAVE_SMACK_RUN_LABEL',
t /etc/mtab - - - - security.SMACK64=_
)m4_dnl
m4_ifdef(`ENABLE_RESOLVED',
L! /etc/resolv.conf - - - - ../run/systemd/resolve/resolv.conf
)m4_dnl