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| -rw-r--r-- | source/configuration/action/rsconf1_omfileforcechown.rst | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/source/configuration/action/rsconf1_omfileforcechown.rst b/source/configuration/action/rsconf1_omfileforcechown.rst new file mode 100644 index 0000000..5eba119 --- /dev/null +++ b/source/configuration/action/rsconf1_omfileforcechown.rst @@ -0,0 +1,67 @@ +$omfileForceChown +----------------- + +**Type:** action configuration parameter + +**Parameter Values:** boolean (on/off, yes/no) + +**Available:** 4.7.0+, 5.3.0-5.8.x, **NOT** available in 5.9.x or higher + +**Note: this parameter has been removed and is no longer available. The +documentation is currently being retained for historical reaons.** +Expect it to go away at some later stage as well. + +**Default:** off + +**Description:** + +Forces rsyslogd to change the ownership for output files that already +exist. Please note that this tries to fix a potential problem that +exists outside the scope of rsyslog. Actually, it tries to fix invalid +ownership/permission settings set by the original file creator. + +Rsyslog changes the ownership during initial execution with root +privileges. When a privilege drop is configured, privileges are dropped +after the file owner ship is changed. Not that this currently is a +limitation in rsyslog's privilege drop code, which is on the TODO list +to be removed. See Caveats section below for the important implications. + +**Caveats:** + +This parameter tries to fix a problem that actually is outside the scope +of rsyslog. As such, there are a couple of restrictions and situations +in which it will not work. **Users are strongly encouraged to fix their +system instead of turning this parameter on** - it should only be used +as a last resort. + +At least in the following scenario, this parameter will fail expectedly: + +It does not address the situation that someone changes the ownership +\*after\* rsyslogd has started. Let's, for example, consider a log +rotation script. + +- rsyslog is started +- ownership is changed +- privileges dropped +- log rotation (lr) script starts +- lr removes files +- lr creates new files with root:adm (or whatever else) +- lr HUPs rsyslogd +- rsyslogd closes files +- rsyslogd tries to open files +- rsyslogd tries to change ownership --> fail as we are non-root now +- file open fails + +Please note that once the privilege drop code is refactored, this +parameter will no longer work, because then privileges will be dropped +before any action is performed, and thus we will no longer be able to +chown files that do not belong to the user rsyslogd is configured to run +under. + +So **expect the parameter to go away**. It will not be removed in +version 4, but may disappear at any time for any version greater than 4. + +**Sample:** + +``$FileOwner loguser $omfileForceChown on`` + |