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| -rw-r--r-- | doc/test-writing-guidelines.txt | 50 |
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diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt index f637da65d..337a6a800 100644 --- a/doc/test-writing-guidelines.txt +++ b/doc/test-writing-guidelines.txt @@ -764,6 +764,56 @@ TST_CLEANUP=cleanup tst_exit ------------------------------------------------------------------------------- +2.3.4 Restarting daemons +^^^^^^^^^^^^^^^^^^^^^^^^ + +Restarting system daemons is a complicated task for two reasons. + +* There are different init systems + (SysV init, systemd, etc...) + +* Daemon names are not unified between distributions + (apache vs httpd, cron vs crond, various syslog variations) + +To solve these problems LTP has 'testcases/lib/daemonlib.sh' library that +provides functions to start/stop/query daemons as well as variables that store +correct daemon name. + +.Supported operations +|============================================================================== +| start_daemon() | Starts daemon, name is passed as first parameter. +| stop_daemon() | Stops daemon, name is passed as first parameter. +| restart_daemon() | Restarts daemon, name is passed as first parameter. +| status_daemon() | Returns daemon status, TODO: what is return value? +|============================================================================== + +.Variables with detected names +|============================================================================== +| CROND_DAEMON | Cron daemon name (cron, crond). +| SYSLOG_DAEMON | Syslog daemon name (syslog, syslog-ng, rsyslog). +|============================================================================== + +.Cron daemon restart example +[source,sh] +------------------------------------------------------------------------------- +#!/bin/sh +# +# Cron daemon restart example +# +TCID=cron01 +TST_COUNT=1 +. test.sh +. daemonlib.sh + +... + +restart_daemon $CROND_DAEMON + +... + +tst_exit +------------------------------------------------------------------------------- + 3. Common problems ------------------ |