Commit Graph

98 Commits

Author SHA1 Message Date
glebius
8e20fa5ae9 Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags within sys.

Exceptions:

- sys/contrib not touched
- sys/mbuf.h edited manually
2012-12-05 08:04:20 +00:00
eadler
c231b826d4 Add characters mapping for codepages used in Germany.
(not verified by me to be accurate)

PR:		bin/163847
Submitted by:	Gabor Fischer <Gabor.Fischer@gmx.net>
Reviewed by:	bp
Approved by:	cperciva
MFC after:	3 weeks
2012-06-01 03:59:08 +00:00
ed
21414c51c1 Change ncp_scan_bindery_object() to pass a constant search string.
The ncp_scan_bindery_object() function does not modify search_string
internally, so there is no need to declare it as `char *'.
2011-10-16 08:44:03 +00:00
joel
e0860804e3 Switch to our preferred 2-clause BSD license.
Approved by:	bp
2010-04-07 16:50:38 +00:00
des
66f807ed8b Retire the MALLOC and FREE macros. They are an abomination unto style(9).
MFC after:	3 months
2008-10-23 15:53:51 +00:00
attilio
2e7c0d4d53 lockmgrs need to be released before to be destroyed and draining doesn't
make an exception.
Add correct stub for it.

Reviewed by:	rwatson
2008-03-30 18:16:33 +00:00
ru
3b1bf8c2e9 Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT.
Removed dead code that assumed that M_TRYWAIT can return NULL; it's not true
since the advent of MBUMA.

Reviewed by:	arch

There are ongoing disputes as to whether we want to switch to directly using
UMA flags M_WAITOK/M_NOWAIT for mbuf(9) allocation.
2008-03-25 09:39:02 +00:00
attilio
0d87334131 - Handle buffer lock waiters count directly in the buffer cache instead
than rely on the lockmgr support [1]:
  * bump the waiters only if the interlock is held
  * let brelvp() return the waiters count
  * rely on brelvp() instead than BUF_LOCKWAITERS() in order to check
    for the waiters number
- Remove a namespace pollution introduced recently with lockmgr.h
  including lock.h by including lock.h directly in the consumers and
  making it mandatory for using lockmgr.
- Modify flags accepted by lockinit():
  * introduce LK_NOPROFILE which disables lock profiling for the
    specified lockmgr
  * introduce LK_QUIET which disables ktr tracing for the specified
    lockmgr [2]
  * disallow LK_SLEEPFAIL and LK_NOWAIT to be passed there so that it
    can only be used on a per-instance basis
- Remove BUF_LOCKWAITERS() and lockwaiters() as they are no longer
  used

This patch breaks KPI so __FreBSD_version will be bumped and manpages
updated by further commits. Additively, 'struct buf' changes results in
a disturbed ABI also.

[2] Really, currently there is no ktr tracing in the lockmgr, but it
will be added soon.

[1] Submitted by:	kib
Tested by:	pho, Andrea Barberio <insomniac at slackware dot it>
2008-03-01 19:47:50 +00:00
attilio
4014b55830 Axe the 'thread' argument from VOP_ISLOCKED() and lockstatus() as it is
always curthread.

As KPI gets broken by this patch, manpages and __FreeBSD_version will be
updated by further commits.

Tested by:	Andrea Barberio <insomniac at slackware dot it>
2008-02-25 18:45:57 +00:00
attilio
0d54671a48 Introduce some functions in the vnode locks namespace and in the ffs
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode

In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock

Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
2008-02-24 16:38:58 +00:00
attilio
7213f4c32b Cleanup lockmgr interface and exported KPI:
- Remove the "thread" argument from the lockmgr() function as it is
  always curthread now
- Axe lockcount() function as it is no longer used
- Axe LOCKMGR_ASSERT() as it is bogus really and no currently used.
  Hopefully this will be soonly replaced by something suitable for it.
- Remove the prototype for dumplockinfo() as the function is no longer
  present

Addictionally:
- Introduce a KASSERT() in lockstatus() in order to let it accept only
  curthread or NULL as they should only be passed
- Do a little bit of style(9) cleanup on lockmgr.h

KPI results heavilly broken by this change, so manpages and
FreeBSD_version will be modified accordingly by further commits.

Tested by: matteo
2008-01-24 12:34:30 +00:00
jeff
4ec9caf00c Refactor select to reduce contention and hide internal implementation
details from consumers.

 - Track individual selecters on a per-descriptor basis such that there
   are no longer collisions and after sleeping for events only those
   descriptors which triggered events must be rescaned.
 - Protect the selinfo (per descriptor) structure with a mtx pool mutex.
   mtx pool mutexes were chosen to preserve api compatibility with
   existing code which does nothing but bzero() to setup selinfo
   structures.
 - Use a per-thread wait channel rather than a global wait channel.
 - Hide select implementation details in a seltd structure which is
   opaque to the rest of the kernel.
 - Provide a 'selsocket' interface for those kernel consumers who wish to
   select on a socket when they have no fd so they no longer have to
   be aware of select implementation details.

Tested by:	kris
Reviewed on:	arch
2007-12-16 06:21:20 +00:00
jeff
91d1501790 Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
   sychronization.
 - Use the per-process spinlock rather than the sched_lock for per-process
   scheduling synchronization.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-05 00:00:57 +00:00
rwatson
a247f2cf6f In ncp_conn_alloc(), a new credential pointer, 'owner', is set up to point
at the credential to be used by the connection.  However, the pointer's
value was ignored when actually setting hcp->nc_owner.

(1) Do set nc_owner to the owner pointer value so that the credential is
    not discarded after being carefully configured.

(2) In the case where we create a new credential with modified uid, copy
    the existing credential to initialize non-uid fields to existing
    values, which will lead to a fully initialized MAC label, groups, etc.

Found with:	Coverity Prevent(tm)
CID:		2226
2007-05-27 17:14:33 +00:00
jhb
9081d44243 Use pause() rather than tsleep() on stack variables and function pointers. 2007-02-27 17:23:29 +00:00
rwatson
10d0d9cf47 Sweep kernel replacing suser(9) calls with priv(9) calls, assigning
specific privilege names to a broad range of privileges.  These may
require some future tweaking.

Sponsored by:           nCircle Network Security, Inc.
Obtained from:          TrustedBSD Project
Discussed on:           arch@
Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri,
                        Alex Lyashkov <umka at sevcity dot net>,
                        Skip Ford <skip dot ford at verizon dot net>,
                        Antoine Brodin <antoine dot brodin at laposte dot net>
2006-11-06 13:42:10 +00:00
jhb
0daea30185 - Fix ncp_poll() to not panic if the socket doesn't have any pending data.
We have to adjust curthread's state enough so that it appears to be
  in a poll(2) or select(2) call so that selrecord() will work and then
  teardown that state after calling sopoll().
- Fix some minor nits in nearby ncp_sock_rselect() and in the identical
  nbssn_rselect() function in the netsmb code:
  - Don't call nb_poll()/ncp_poll() now that ncp_poll() already fakes up
    poll(2) state since the rselect() functions already do that.  Just
    invoke sopoll() directly.
  - To make things slightly more intuitive, store the results of sopoll()
    in a new 'revents' variable rather than 'error' since that's what
    sopoll() actually returns.
  - If the requested timeout time has been exceeded by the time we get
    ready to block, then return EWOULDBLOCK rather than 0 to signal a
    timeout as this is what the calling code expects.

Tested by:	Eric Christeson <eric.j.christeson AT gmail> (1)
MFC after:	1 week
2006-08-03 15:31:52 +00:00
rwatson
40868fda8a soreceive_generic(), and sopoll_generic(). Add new functions sosend(),
soreceive(), and sopoll(), which are wrappers for pru_sosend,
pru_soreceive, and pru_sopoll, and are now used univerally by socket
consumers rather than either directly invoking the old so*() functions
or directly invoking the protocol switch method (about an even split
prior to this commit).

This completes an architectural change that was begun in 1996 to permit
protocols to provide substitute implementations, as now used by UDP.
Consumers now uniformly invoke sosend(), soreceive(), and sopoll() to
perform these operations on sockets -- in particular, distributed file
systems and socket system calls.

Architectural head nod:	sam, gnn, wollman
2006-07-24 15:20:08 +00:00
rwatson
c3a7d3e5b2 In ncp_sysctl_connstat(), the SLIST_FOREACH() logic to check 'error'
resulted in deadcode, as 'error' could never be 0.  What this logic
was originally meant to handle is not clear -- it's been this way
(broken) since at least RELENG_4.

Found with:	Coverity Prevent(tm)
MFC after:	3 days
2006-01-14 11:40:32 +00:00
rwatson
be4f357149 Normalize a significant number of kernel malloc type names:
- Prefer '_' to ' ', as it results in more easily parsed results in
  memory monitoring tools such as vmstat.

- Remove punctuation that is incompatible with using memory type names
  as file names, such as '/' characters.

- Disambiguate some collisions by adding subsystem prefixes to some
  memory types.

- Generally prefer lower case to upper case.

- If the same type is defined in multiple architecture directories,
  attempt to use the same name in additional cases.

Not all instances were caught in this change, so more work is required to
finish this conversion.  Similar changes are required for UMA zone names.
2005-10-31 15:41:29 +00:00
imura
3c148b71eb Change API of mb_copy_t in libmchain so that netsmb can handle
multibyte character share name correctly.

Reviewed by:	bp
2005-07-29 13:22:37 +00:00
sam
9f549c4137 avoid potential null ptr derefs
Noticed by:	Coverity Prevent analysis tool
2005-02-23 22:44:38 +00:00
imp
a50ffc2912 /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
marius
064653b217 Use byteorder(9) functions to implement the [g,s]et[d,w][b,l]e macros so
only one set is needed for either endianess. This also completes them for
big endian archs and fixes the compilation of libncp, netncp, etc. there.

Reviewed by:		bp, rwatson
Compile tested on:	i386, sparc64
MFC after:		1 week
2005-01-03 18:03:00 +00:00
phk
038474294c Add missing zero flag argument. 2004-10-12 08:22:08 +00:00
phk
dfd1f7fd50 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
phk
f43aa0c4bc add missing #include <sys/module.h> 2004-05-30 20:27:19 +00:00
peter
bd5efd4600 Make the process_exit eventhandler run without Giant. Add Giant hooks
in the two consumers that need it.. processes using AIO and netncp.
Update docs.  Say that process_exec is called with Giant, but not to
depend on it.  All our consumers can handle it without Giant.
2004-03-14 02:06:28 +00:00
truckman
1de257deb3 Split the mlock() kernel code into two parts, mlock(), which unpacks
the syscall arguments and does the suser() permission check, and
kern_mlock(), which does the resource limit checking and calls
vm_map_wire().  Split munlock() in a similar way.

Enable the RLIMIT_MEMLOCK checking code in kern_mlock().

Replace calls to vslock() and vsunlock() in the sysctl code with
calls to kern_mlock() and kern_munlock() so that the sysctl code
will obey the wired memory limits.

Nuke the vslock() and vsunlock() implementations, which are no
longer used.

Add a member to struct sysctl_req to track the amount of memory
that is wired to handle the request.

Modify sysctl_wire_old_buffer() to return an error if its call to
kern_mlock() fails.  Only wire the minimum of the length specified
in the sysctl request and the length specified in its argument list.
It is recommended that sysctl handlers that use sysctl_wire_old_buffer()
should specify reasonable estimates for the amount of data they
want to return so that only the minimum amount of memory is wired
no matter what length has been specified by the request.

Modify the callers of sysctl_wire_old_buffer() to look for the
error return.

Modify sysctl_old_user to obey the wired buffer length and clean up
its implementation.

Reviewed by:	bms
2004-02-26 00:27:04 +00:00
phk
ad925439e0 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
phk
7099deadda The present defaults for the open and close for device drivers which
provide no methods does not make any sense, and is not used by any
driver.

It is a pretty hard to come up with even a theoretical concept of
a device driver which would always fail open and close with ENODEV.

Change the defaults to be nullopen() and nullclose() which simply
does nothing.

Remove explicit initializations to these from the drivers which
already used them.
2003-09-27 12:01:01 +00:00
peter
44b5ea3111 size_t != int. Make this compile on 64 bit platforms (eg: amd64).
Also, "u_short value; if (value > 0xffff)" can never be true.
2003-07-24 01:59:18 +00:00
obrien
8b64eb1925 Use __FBSDID(). 2003-06-11 05:37:42 +00:00
jhb
89a4eb17de - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
jeff
46e6ba39f1 - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
jhb
98a481610a Replace the at_fork, at_exec, and at_exit functions with the slightly more
flexible process_fork, process_exec, and process_exit eventhandlers.  This
reduces code duplication and also means that I don't have to go duplicate
the eventhandler locking three more times for each of at_fork, at_exec, and
at_exit.

Reviewed by:	phk, jake, almost complete silence on arch@
2003-03-24 21:15:35 +00:00
jhb
b8b062b09b Use td->td_ucred instead of td->td_proc->p_ucred. 2003-03-20 21:17:40 +00:00
phk
2fe1f6204d Note that MAJOR_AUTO is now the default if d_maj is not initialized. This
is more robust and prevents the hijacking of /dev/console for the typical
mistake.

Remove unneeded MAJOR_AUTO uses, it is only needed explicitly now if the
driver source has cross-branch compatibility to old releases.
2003-03-09 11:03:45 +00:00
phk
0ae911eb0e Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
tjr
c072d36bb9 Use a character device and ioctl() for communication between libncp
and the kernel instead of adding more syscalls at runtime. As a bonus,
you can now restrict access to the kernel NCP interface with chmod.
2003-02-28 04:31:29 +00:00
fjoe
9ea7b9c811 Catch up with KSE changes.
Reviewed by:	tjr
2003-02-26 21:25:55 +00:00
imp
cf874b345d Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
tjr
8a9c700ec3 Lock proc while accessing p_siglist p_sigmask and p_sigignore.
Not tested because netncp does not compile.
2003-02-14 09:16:43 +00:00
alfred
bf8e8a6e8f Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
jhb
6c4366c376 - Change mb_copy_t to take a size_t as the length argument instead of an
int.
- Change the local variable in smb_copy_iconv() from an int to a size_t.

These make smb_copy_iconv() happy in a 64-bit world.
2002-11-08 21:26:32 +00:00
mike
8630abe45f Change iov_base's type from char *' to the standard void *'. All
uses of iov_base which assume its type is `char *' (in order to do
pointer arithmetic) have been updated to cast iov_base to `char *'.
2002-10-11 14:58:34 +00:00
jmallett
7a693db242 Back our kernel support for reliable signal queues.
Requested by:	rwatson, phk, and many others
2002-10-01 17:15:53 +00:00
jmallett
7bf6052470 Convert use of p_siglist and old SIG*() macros to use <sys/ksiginfo.h>
prototyped functions to get a sigset_t, and further to check for any
queued signals, rather than an empty signal set, to go with the move
to signal queues rather than signal sets.
2002-09-30 20:48:29 +00:00
alfred
ac315391ce use __packed. 2002-09-23 18:54:32 +00:00
truckman
b1555a2743 Wire the sysctl output buffer before grabbing any locks to prevent
SYSCTL_OUT() from blocking while locks are held.  This should
only be done when it would be inconvenient to make a temporary copy of
the data and defer calling SYSCTL_OUT() until after the locks are
released.
2002-07-28 19:59:31 +00:00