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Commit Graph

4866 Commits

Author SHA1 Message Date
Marcel Moolenaar
a9b4acea06 All signals can be sent to the inferior process when it's restarted,
not just the legacy ones.

PR: 33299
Submitted by: Alexander N. Kabaev <ak03@gte.com>
2002-05-19 01:37:43 +00:00
John Baldwin
f44d9e24fb Change p_can{debug,see,sched,signal}()'s first argument to be a thread
pointer instead of a proc pointer and require the process pointed to
by the second argument to be locked.  We now use the thread ucred reference
for the credential checks in p_can*() as a result.  p_canfoo() should now
no longer need Giant.
2002-05-19 00:14:50 +00:00
John Baldwin
bdc9a8d01b Now that daddr_t has grown up, use %lld to printf it and cast it to long
long.
2002-05-18 23:46:04 +00:00
Poul-Henning Kamp
e96d018d92 Use btodb() macro.
Sponsored by: DARPA & NAI Labs.
2002-05-18 09:34:09 +00:00
Eric Melville
096a727e41 Separate "seperate" from kernel source. 2002-05-16 22:43:20 +00:00
Tom Rhodes
d394511de3 More s/file system/filesystem/g 2002-05-16 21:28:32 +00:00
Maxime Henrion
34e53231d0 o Fix vfs_copyopt(), the first argument to bcopy() is the source,
not the destination.
o Remove some code from vfs_getopt() which was making the interface
  more complicated to use for a very slight gain.
2002-05-16 17:09:41 +00:00
Robert Watson
661016419c p_cansignal() returns an errno value; at some point, the check for
inter-process signalling ceased to preserve and return that value,
instead always returning EPERM.  This meant that it was possible
to "probe" the pid space for processes that were not otherwise
visible.  This change reverts that reversion.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-05-14 23:07:15 +00:00
Jeff Roberson
0e2d6cc899 Disable the shared locking namei() code for now. It breaks several stacking
filesystems.  This is on hold until the rest of VFS Locking is reviewed and
deemed safe.  It can be enabled with 'options LOOKUP_SHARED'.
2002-05-14 21:59:49 +00:00
Dag-Erling Smørgrav
733c328439 Remove a printf(3) argument with no corresponding format specifier. 2002-05-14 18:28:06 +00:00
Poul-Henning Kamp
98b0c78978 Make daddr_t and u_daddr_t 64bits wide.
Retire daddr64_t and use daddr_t instead.

Sponsored by:	DARPA & NAI Labs.
2002-05-14 11:09:43 +00:00
Poul-Henning Kamp
77068a7fe2 Retire the bogus uses of the disklabel field d_sbsize and begin to
initialize it to zero so we don't have to have everbody and their
aunt including FFS specific header files.

Sponsored by: DARPA & NAI Labs.
2002-05-12 20:49:41 +00:00
Marcel Moolenaar
882c6b1e5a Fix alpha build. The alpha has dumpsys implemented.
While here, revert the condition to list the machines
for which dumpsys has not been implemented.

Reported by: wilko
2002-05-12 18:27:28 +00:00
Mike Silbersack
a9caffba47 Change the mbuf exhaustion warning message to match the message
in -stable.
2002-05-09 20:21:07 +00:00
Jonathan Mini
d8f4f6a404 Remove trace_req().
Reviewed by:	alfred, jhb, peter
2002-05-09 04:13:41 +00:00
Alan Cox
82641acd17 o Correct an error made in revision 1.65: In readv(), if uap->iovcnt is
out-of-range, drop the file reference before returning.  (This error
   also exists in the RELENG_4 branch.)
 o Eliminate the acquisition and release of Giant in readv()
   now that malloc() and free() are callable without Giant.
2002-05-09 02:30:41 +00:00
Alfred Perlstein
8b43b53530 expand_name fixes:
.) don't use MAXPATHLEN + 1, fix logic to compensate.
.) style(9) function parameters.
.) fix line wrapping.
.) remove duplicated error and string handling code.
.) don't NUL terminate already NUL terminated string.
.) all string length variables changed from int to size_t.
.) constify variables.
.) catch when corename would be truncated.
.) cast pid_t and uid_t args for format string.
.) add parens around return arguments.

Help and suggestions from: bde
2002-05-08 09:06:47 +00:00
Jake Burkholder
0cce52f8eb Remove runq_findproc. This never worked right in the first place and can
be prohibitively expensive.
2002-05-08 04:39:49 +00:00
Alfred Perlstein
b2bc3101a8 M_ZERO the temp buffer in expand_name() otherwise if an error occurs
while logging we may pass a non NUL terminated string to log(9) for a
%s format arg.
2002-05-07 23:37:07 +00:00
Peter Wemm
0d93809e04 Re-remove kern_random.c and svr4_signal.c. Somehow dillon managed to keep
on committing to these while they were in the Attic after they had been
removed.  I think this was because he had the file checked out and already
'modified' while markm cvs rm'ed them, and cvs screws up when trying to
"merge" the modifications with the "rm".  And after that the client
state was sufficiently hosed to keep it messed up.  Yay CVS!  (CVS is
very fragile for adding and removing files remotely)

The existence of these files was pointed out by: ru
2002-05-07 21:54:47 +00:00
Seigo Tanimura
9d0fc9636e Do not forget to increase the number of completely connected sockets in
soisconnected_locked().

Forgotten by:	tanimura
2002-05-07 16:17:44 +00:00
Jeff Roberson
f0d73b3e5f Switch from just holding the interlock to holding the standard lock throughout
getnewvnode().  This is safer.  In the future, we should investigate requiring
only the interlock to get the vnode object.
2002-05-07 02:44:06 +00:00
Alfred Perlstein
e649887b1e Make funsetown() take a 'struct sigio **' so that the locking can
be done internally.

Ensure that no one can fsetown() to a dying process/pgrp.  We need
to check the process for P_WEXIT to see if it's exiting.  Process
groups are already safe because there is no such thing as a pgrp
zombie, therefore the proctree lock completely protects the pgrp
from having sigio structures associated with it after it runs
funsetownlst.

Add sigio lock to witness list under proctree and allproc, but over
proc and pgrp.

Seigo Tanimura helped with this.
2002-05-06 19:31:28 +00:00
John Baldwin
e746d950ab When checking to see if the init process calls exit1(), compare p to the
initproc proc pointer instead of checking to see if the pid is 1.

Submitted by:	bde
2002-05-06 17:07:10 +00:00
John Baldwin
276c516984 Style fixes in local variable declarations.
Submitted by:	bde
2002-05-06 17:04:29 +00:00
John Baldwin
7a6b989bfa - Style fixes in some comments.
- Whitespace nit.
- Sort some includes.

Submitted by:	bde (mostly)
2002-05-06 15:46:29 +00:00
Jeff Roberson
6953f5da1a Hold the currently selected vnode's lock across the call to VOP_GETVOBJECT.
Don't try to create a vm object before the file system has a chance to finish
initializing it.  This is incorrect for a number of reasons.  Firstly, that
VOP requires a lock which the file system may not have initialized yet. Also,
open and others will create a vm object if it is necessary later.
2002-05-06 04:47:43 +00:00
Maxime Henrion
9d997d8be8 Add the lchflags(2) syscall.
Reviewed by:	rwatson
2002-05-05 23:47:41 +00:00
Maxime Henrion
8d9b781fb5 Add an entry for the lchflags(2) syscall. It's useful to prevent
a symlink deletion.

Reviewed by:	rwatson
2002-05-05 23:37:44 +00:00
Jeff Roberson
576365ba36 Move a KASSERT() in open() prior to unlocking the vnode. It's not safe to
call VOP_GETVOBJECT without a lock.
2002-05-05 23:17:13 +00:00
Alan Cox
c50fe92b8d o Condition the compilation of uiomoveco() and vm_uiomove()
on ENABLE_VFS_IOOPT.
 o Add a comment to the effect that this code is experimental
   support for zero-copy I/O.
2002-05-05 22:42:40 +00:00
Poul-Henning Kamp
81e017430a Expand the one-line function pbreassignbuf() the only place it is or could
be used.
2002-05-05 20:37:08 +00:00
Bruce Evans
f5216b9a19 Return the correct error code (ENOSYS, not EINVAL) from nosys(). Getting
killed by SIGSYS for unimlemented syscalls is bad enough.

Obtained from:	Lite2 branch

The Lite2 branch has some other interesting unmerged (?) bits in this
file.  They are well hidden among cosmetic regressions.
2002-05-05 04:50:47 +00:00
Bruce Evans
a9a0f15a69 Fixed breakage of binary compatibility of the kern.clockrate sysctl in
sys/time.h rev.1.53, etc.  Zero out the entire struct clkinfo and not
just the new spare part of it so that there is no possibility of leaking
kernel stack context to userland.
2002-05-05 04:33:09 +00:00
Maxime Henrion
afd458b0fa Fix a typo.
Submitted by:	dwmalone
2002-05-04 19:50:09 +00:00
Poul-Henning Kamp
e31c615c60 Remove a six year old undocumented #ifdef : NO_B_MALLOC. 2002-05-04 19:24:55 +00:00
Matthew Dillon
9f9435545b Remove obsolete code (that was already #if 0'd out).
Requested by: Hiten Pandya <hitmaster2k@yahoo.com>
2002-05-04 17:10:15 +00:00
Alfred Perlstein
698f85d3e3 style(9): 'if' and 'while' need a space after them. 2002-05-04 07:40:49 +00:00
Poul-Henning Kamp
48e5da550a Initialize time_second to 1 instead of zero to pacify slightly bogus arp code.
Various minor style fixes from BDE.
2002-05-03 08:46:03 +00:00
Seigo Tanimura
6041fa0a60 As malloc(9) and free(9) are now Giant-free, remove the Giant lock
across malloc(9) and free(9) of a pgrp or a session.
2002-05-03 07:46:59 +00:00
Seigo Tanimura
c8d8a686e4 Fix the lock order reversal between the sigio lock and a process/pgrp lock in
funsetownlst() by locking the sigio lock across funsetownlst().
2002-05-03 05:32:25 +00:00
Peter Wemm
85f79d52e9 Retire makeobjops.pl - replaced by ../tools/makeobjops.awk. 2002-05-02 22:21:59 +00:00
Poul-Henning Kamp
0b5d880d39 As promised make the hack for sizeof(struct disklabel) on alpha annoying.
Run make world (or recompile whatever program whines) to get rid of warning.

Compat bits will be removed entirely in about two weeks.
2002-05-02 21:53:39 +00:00
Maxime Henrion
6dbde1fe23 Convert devfs to nmount.
Reviewed by:	phk
2002-05-02 20:27:42 +00:00
John Baldwin
3fc755c118 - Protect randompid and nprocs with the allproc_lock.
- Reorder fork1() to do malloc() and other blocking operations prior to
  acquiring the needed process locks.
- The new process inherit's the credentials of curthread, not the
  credentials of the old process.
- Document a really weird race that will come up with KSE allows multiple
  kernel threads per process.
2002-05-02 15:13:45 +00:00
John Baldwin
d7aadbf9ce - Reorder a few things so that when we lock the process at the end of
exit1() we don't have to release it until we acquire schd_lock to
  call cpu_throw().
- Since we can switch at any time due to preemption or a lock release
  prior to acquiring sched_lock, don't update switchtime and switchticks
  until the very end of exit1() after we have acquired sched_lock.
- Interlock the proctree_lock and proc lock in wait1() and exit1() to
  avoid lost wakeups when a parent blocks waiting for a child to exit at
  the bottom of wait1().  In exit1() the proc lock interlocked with
  proctree_lock (and released after acquiring sched_lock) is that of
  the parent process.
- In wait1() use an exclusive lock of proctree lock while we are
  looking for a process to harvest.  This allows us to completely
  remove all references to the process once we've found one (i.e.,
  disconnect it from pgrp's, session's, zombproc list, and it's parent's
  children list) "atomically" without needing to worry about a lock
  upgrade.
- We don't need sched_lock to test if p_stat is SZOMB or SSTOP when holding
  the proc lock since the proc lock is always held with p_stat is set to
  SZOMB or SSTOP.
- Protect nprocs with an xlock of the allproc_lock.
2002-05-02 15:09:58 +00:00
John Baldwin
9b3b1c5fdf - Reorder execve() so that it performs blocking operations before it
locks the process.
- Defer other blocking operations such as vrele()'s until after we
  release locks.
- execsigs() now requires the proc lock to be held when it is called
  rather than locking the process internally.
2002-05-02 15:00:14 +00:00
Jeff Roberson
8f70816cf2 Hide a pointer to the malloc_type bucket at the end of the freed memory. If
this memory is modified after it has been freed we can now report it's
previous owner.
2002-05-02 09:07:04 +00:00
Jeff Roberson
5a34a9f089 malloc/free(9) no longer require Giant. Use the malloc_mtx to protect the
mallochash.  Mallochash is going to go away as soon as I introduce the
kfree/kmalloc api and partially overhaul the malloc wrapper.  This can't happen
until all users of the malloc api that expect memory to be aligned on the size
of the allocation are fixed.
2002-05-02 07:22:19 +00:00
Jeff Roberson
639c9550fb Remove the temporary alignment check in free().
Implement the following checks on freed memory in the bucket path:
	- Slab membership
	- Alignment
	- Duplicate free

This previously was only done if we skipped the buckets.  This code will slow
down INVARIANTS a bit, but it is smp safe.  The checks were moved out of the
normal path and into hooks supplied in uma_dbg.
2002-05-02 02:08:48 +00:00