Make ipfilter, ipnat, ipmon, and ipfs behave more like the old rc.
o group them together so they run one right after another
o use the NetBSD supplied ipfs script instead of tacking
it on to the end of ipnat
o Load the ipl module in ipnat and ipfilter, if it's not already
loaded
o In ipmon and ipnat show a warning if neither ipfilter nor
ipnat is enabled or the ipl module is not loaded, and exit
Free mount credentials (mnt_cred) when freeing the mount struct
in failure cases to avoid leaking struct ucreds, and ultimately
leaking struct uidinfo references.
- Acquire the vm_object's lock when performing vm_object_page_clean().
- Add a parameter to vm_pageout_flush() that tells vm_pageout_flush()
whether its caller has locked the vm_object. (This is a temporary
measure to bootstrap vm_object locking.)
des [Thu, 24 Apr 2003 03:37:59 +0000 (03:37 +0000)]
When filling out a kinfo_proc structure, if we come across a process
whose p_stats->p_start has the magic value 1, replace it with boottime.
Some users were apparently confused by the fact that ps(1) reported a
start time in early 1970 for system processes.
Don't print anything for fault at cpu_switch_load_gs, just like other
code to recover fault in doreti because of invalid segment registers,
silently push error to userland.
Document support for the new -s and -R command-line options, and
the 'N' flag. These were coded in March as revisions 1.55 and 1.56
of newsyslog.c. I intend to MFC all the matching changes next week.
This also reorganizes the description of the 'flags' field to give
list of the valid flags, instead of a long paragraph explaining
each of the possible values.
Obtained from: NetBSD (in spirit at least, for -s and N)
MFC after: 1 week
1. Allow drivers to query CIS strings from OLDCARD.
2. Include backwards compatibility good for the moment (eventually will
be turned off in current, but allow for a short transition period).
kan [Wed, 23 Apr 2003 21:41:59 +0000 (21:41 +0000)]
Add a new sys/limits.h file which in turn depends on machine/_limits.h
to get actual constant values. This is in preparation for machine/limits.h
retirement.
Discussed on: standards@
Submitted by: Craig Rodrigues <rodrigc@attbi.com> (*)
Modified by: kan
Document support for the <default> entry, which was implemented in
revision 1.50 of newsyslog.c , back in February. I intend to MFC
those changes soon.
- Reorganize osigstack() to do the copyin first, grab the proc lock once,
do all the various sigstack dances, unlock the proc lock, and finally do
the copyout. This more closely resembles the behavior of
kern_sigaltstack() and closes a small race.
- Remove Giant from osigstack as it is no longer needed.
- Protect p_numthreads with the sched_lock.
- Protect p_singlethread with both the sched_lock and the proc lock.
- Protect p_suspcount with the proc lock.
des [Wed, 23 Apr 2003 15:51:36 +0000 (15:51 +0000)]
Add constants for USB programming interfaces. These are already defined
(with other names) in the USB driver sources, but I felt that pcireg.h
should have a complete list - at least of classes and interfaces that we
know about and use.
Release the vnode interlock in nfs_flush() before calling nfs_sigintr(),
and grab it again later if necessary. This prevents a lock order reversal
because nfs_sigintr() calls PROC_LOCK().
``Strong typing is a crutch for people with weak memories.''
Correct a bug that should have wreaked havoc everywhere, but for
some reason only bit unlucky people who use `-march' optimizations.
The compiler cannot assist one in distinguishing between the two
function calls below.
Change the locking so that the _modify function is called with topology
held.
The only place where we want to not hold topology is when we read
(or write) the label to disk: in the case of a disk error with a
long recovery time, holding topology would prevent open/close of
any disk device.
- Move PS_PROFIL and its new cousin PS_STOPPROF back over to p_flag and
rename them appropriately. Protect both flags with both the proc lock
and the sched_lock.
- Protect p_profthreads with the proc lock.
- Remove Giant from profil(2).
- Assert that the proc lock and sched_lock are held in sched_nice().
- For the 4BSD scheduler, this means that all callers of the static
function resetpriority() now always hold sched_lock, so don't lock
sched_lock explicitly in that function.
Lock both the proc lock and sched_lock when calling sched_nice since
kg_nice is now protected by both. Being protected by both means that
other places in the kernel that want to read kg_nice only need one of the
two locks.
Add a couple asserts to pthread_cond_foo to ensure the (low-level)
lock level is 0. Thus far, the threads implementation doesn't use
mutexes or condition variables so the lock level should be 0.
Save the return value when trying to schedule a new thread and
use this to return an error from pthread_create().
Change the max sleep time for an idle KSE to 1 minute from 2 minutes.
Maintain a count of the number of KSEs within a KSEG.
With these changes scope system threads seem to work, but heavy
use of them crash the kernel (supposedly VM bugs).
- Always call faultin() in _PHOLD() if PS_INMEM is clear. This closes a
race where a thread could assume that a process was swapped in by
PHOLD() when it actually wasn't fully swapped in yet.
- In faultin(), always msleep() if PS_SWAPPINGIN is set instead of doing
this check after bumping p_lock in the PS_INMEM == 0 case. Also,
sched_lock is only needed for setting and clearning swapping PS_*
flags and the swap thread inhibitor.
- Don't set and clear the thread swap inhibitor in the same loops as the
pmap_swapin/out_thread() since we have to do it under sched_lock.
Instead, mimic the treatment of the PS_INMEM flag and use separate loops
to set the inhibitors when clearing PS_INMEM and clear the inhibitors
when setting PS_INMEM.
- swapout() now returns with the proc lock held as it holds the lock
while adjusting the swapping-related PS_* flags so that the proc lock
can be used to test those flags.
- Only use the proc lock to check the swapping-related PS_* flags in
several places.
- faultin() no longer requires sched_lock to be held by callers.
- Rename PS_SWAPPING to PS_SWAPPINGOUT to be less ambiguous now that we
have PS_SWAPPINGIN.
- Mark the kse_purge_group() and kse_purge() definitions static to match
their prototypes.
- Remove sched_lock locking from kse_purge() as all callers already lock
the sched_lock before calling it.
- Hold the proc lock slightly longer to protect P_SHOULDSTOP().
Keep the proc locked while we set PS_INMEM so that either of the proc lock
or sched_lock are sufficient to test this flag.
XXX: vinum should really be using a kernel process via kthread_create()
instead of this hack. I'm not even sure PS_INMEM can be clear at this
point anyways.
- Replace inline implementations of sigprocmask() with calls to
kern_sigprocmask() in the various binary compatibility emulators.
- Replace calls to sigsuspend(), sigaltstack(), sigaction(), and
sigprocmask() that used the stackgap with calls to the corresponding
kern_sig*() functions instead without using the stackgap.
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