legacy code), if the builtin service forks (not all do), avoid leaking
listening sockets into the child process.
If the child process were to keep copies of the listening sockets
around and then hang about for a long time, it would prevent inetd
from being able to re-bind them upon restart.
The listening sockets are tagged close-on-exec, but that doesn't help
when one doesn't exec.
Patch from my own very old PR 8253.
Fail sched_catchlwp() if mutex_tryenter() on the remote CPU's state fails.
Seems to work around the issue described in this PR.
XXX Stealing jobs from remote CPUs could probably be moved into the idle
loop, making the locking quite a bit simpler.
- Do timeslicing for SCHED_RR threads. At ~16Hz it's too slow but better
than nothing. XXX
- If a SCHED_OTHER thread has hogged the CPU for 1/8s without taking a
trip through mi_switch(), try to force a kernel preemption to give other
threads a chance.
nonexistent programs on $PATH and nonexistent programs with an absolute
pathname, so we ought to test both.
If anyone creates a program called nonexistent-program-on-path and
thereby breaks this test for themselves, they deserve it. ;-)
Also prune a no-longer-used shell variable.
than a zero-terminated list; this makes the code simpler and also
hopefully fixes the recent "childdet" botch, see PR kern/38528
-handle the root hub specially a bit earlier, this allows to kick out
the "submatch" functions completely which needed to second-guess
from the port number (where "0" meant root hub")
(we could handle the root hub specially even earlier, but as done
now big parts of the hub emulation code are exercised regularely,
this would bitrot otherwise)
physical drives belong to which logical drive, so all the physical drives
will show up for logical drive 0, and also appear for logical drives that
are rebuilding so that the rebuild state will show the physical drive
being rebuilt. Locking for the scratch buffer is currently missing - system
quickly quits responding when I try to lock the buffer with mutex_{enter,exit}().
