At the startup, if the default log dir provided either by command line
options or suricat.yaml is not writable, the error comes quite later.
This patch makes suricata exit if there is such an error in the
beginning itself.
Closes redmine ticket #2386.
Set flags by default:
-Wmissing-prototypes
-Wmissing-declarations
-Wstrict-prototypes
-Wwrite-strings
-Wcast-align
-Wbad-function-cast
-Wformat-security
-Wno-format-nonliteral
-Wmissing-format-attribute
-funsigned-char
Fix minor compiler warnings for these new flags on gcc and clang.
When running in live mode, the new default 'auto' value of
unix-command.enabled causes unix-command to be activated. This
will allow users of live capture to benefit from the feature and
result in no side effect for user running in offline capture.
For af-packet, pf-ring, netmap, and pcap use a generic
lookup function to find the configuration node for an
interface.
The new lookup function does not depend on the ordering
of the items inside the device configuration.