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Diffstat (limited to 'man/systemd.exec.xml')
| -rw-r--r-- | man/systemd.exec.xml | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml index 7daa3ae78e..3c350df11f 100644 --- a/man/systemd.exec.xml +++ b/man/systemd.exec.xml @@ -1270,6 +1270,14 @@ filter is reset, all prior assignments will have no effect. This does not affect commands prefixed with <literal>+</literal>.</para> + <para>Note that strict system call filters may impact execution and error handling code paths of the service + invocation. Specifically, access to the <function>execve</function> system call is required for the execution + of the service binary — if it is blocked service invocation will necessarily fail. Also, if execution of the + service binary fails for some reason (for example: missing service executable), the error handling logic might + require access to an additional set of system calls in order to process and log this failure correctly. It + might be necessary to temporarily disable system call filters in order to simplify debugging of such + failures.</para> + <para>If you specify both types of this option (i.e. whitelisting and blacklisting), the first encountered will take precedence and will dictate the default action |