Some errors printed the jail name for unnamed (command line) jails.
Attempting to create an already-existing jail from the command line
returned with no error (even for non-root) due to bad logic in
start_state.
Ignore kvm_proc errors, which are typically caused by permission
problems. Instead, stop ignoring permission errors when removing
a jail (but continue to silently ignore other errors, i.e. the
jail no longer existing). This makes non-root attempts at removing
a jail give a clearer error message.
as part of jail removal (IP_STOP_TIMEOUT).
Note a jail as "removed" even if it wasn't jail_remove() that did
the deed, e.g. if it already went away because all its processes
were killed.
finish_command can be processed properly.
Call failed() once in next_command() instead of multiple times in
run_command().
Continue processing commands when a no-wait operation (IP__OP or background
command) succeeds.
Check for IPv4 or IPv6 to be available by the kernel to not
provoke errors trying to query options not available.
Make it possible to compile out INET or INET6 only parts.
a single command string to run, and an inner function (run_command) that
runs that single string.
Move the list of start/stop commands to run from a switch statement into
an array, with a new placeholder parameter IP__OP for actually creating
or removing the jail.
When jail creation fails, revert all non-exec commands in reverse order.
Make the parallelism limit a global instead of always passing it
to run_command and finish_command.
In the case of an empty command string, try to run any other strings
the command may have.
Replace JF_BACKGROUND with its sort-of opposite JF_SLEEPQ.
Change j->comstring earlier to render JF_RUNQ unncessary.
Change the if-else series to a more readable switch statement.
Treat IP_STOP_TIMEOUT like a command, calling run_command which then
calls term_procs.
When the IP_STOP_TIMEOUT "command" finishes, it shouldn't mess with
the parallelism limit.
Make sufficient checks in finish_command and run_command so that
the nonintuitive j->comstring null check isn't necessary to run them.
Rename the "waiting" queue to "depend", because the "sleeping" and
"runnable" queues are also used to wait for something.
path must be absolute.
mount paths must exist and have no symlinks beyond the jail's path itself.
consolelog must exist (apart from the final component) and have no
symlinks beyond the jail's path itself.
