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commit: ae56f62162c95b724fb5f2f749b94255dee913bb |
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Author: Sven Vermeulen <sven.vermeulen <AT> siphos <DOT> be> |
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AuthorDate: Sun May 1 20:21:26 2011 +0000 |
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Commit: Sven Vermeulen <sven.vermeulen <AT> siphos <DOT> be> |
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CommitDate: Sun May 1 20:21:26 2011 +0000 |
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URL: http://git.overlays.gentoo.org/gitweb/?p=proj/hardened-docs.git;a=commit;h=ae56f621 |
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|
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Add cron failure information |
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|
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--- |
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xml/selinux-faq.xml | 51 +++++++++++++++++++++++++++++++++++++++++++++++++-- |
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1 files changed, 49 insertions(+), 2 deletions(-) |
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|
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diff --git a/xml/selinux-faq.xml b/xml/selinux-faq.xml |
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index d042d2c..3922c94 100644 |
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--- a/xml/selinux-faq.xml |
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+++ b/xml/selinux-faq.xml |
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@@ -17,8 +17,8 @@ The FAQ is a collection of solutions found on IRC, mailinglist, forums or |
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elsewhere |
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</abstract> |
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|
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-<version>5</version> |
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-<date>2011-04-30</date> |
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+<version>6</version> |
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+<date>2011-05-01</date> |
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|
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<faqindex> |
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<title>Questions</title> |
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@@ -415,5 +415,52 @@ when logged on. And you shouldn't allow remote root logins anyhow. |
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|
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</body> |
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</section> |
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+<section id="cronfails"> |
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+<title> |
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+ Cron fails to load in root's crontab with message '(root) ENTRYPOINT |
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+ FAILED (crontabs/root)' |
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+</title> |
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+<body> |
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+ |
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+<p> |
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+When you hit the mentioned error with a root crontab or an administrative |
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+users' crontab, but not with a regular users' crontab, then check the context of |
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+the crontab file: |
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+</p> |
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+ |
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+<pre caption="Check context of the crontab file"> |
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+~# <i>ls -Z /var/spool/cron/crontabs/root</i> |
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+staff_u:object_r:user_cron_spool_t /var/spool/cron/crontabs/root |
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+</pre> |
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+ |
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+<p> |
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+Next, check what the default context is for the given user (in this case, root) |
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+when originating from the <c>crond_t</c> domain: |
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+</p> |
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+ |
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+<pre caption="Check default context for user root"> |
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+~# <i>getseuser root system_u:system_r:crond_t</i> |
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+seuser: root, level (null) |
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+Context 0 root:sysadm_r:cronjob_t |
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+Context 1 root:staff_r:cronjob_t |
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+</pre> |
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+ |
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+<p> |
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+As you can see, the default context is always for the <c>root</c> SELinux user. |
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+However, the <path>/var/spool/cron/crontabs/root</path> file context in the |
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+above example is for the SELinux user staff_u. Hence, cron will not be able to |
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+read this file (the <c>user_cron_spool_t</c> type is a UBAC constrained one). |
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+</p> |
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+ |
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+<p> |
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+To fix this, change the user of the file to root: |
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+</p> |
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+ |
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+<pre caption="Change the SELinux user of the root crontab file"> |
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+~# <i>chcon -u root /var/spool/cron/crontabs/root</i> |
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+</pre> |
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+ |
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+</body> |
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+</section> |
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</chapter> |
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</guide> |
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