Commit Graph

257 Commits

Author SHA1 Message Date
jhb
97facf9f0e Add support for installing 32-bit system calls from kernel modules. This
includes syscall32_{de,}register() routines as well as a module handler
and wrapper macros similar to the support for native syscalls in
<sys/sysent.h>.

MFC after:	1 month
2008-09-25 20:50:21 +00:00
jhb
7cd998e440 Sort includes and add multiple include guards. 2008-09-25 20:12:38 +00:00
jhb
6ccb676bf2 Regen. 2008-09-25 20:08:36 +00:00
jhb
00776aeb58 Tidy up a few things with syscall generation:
- Instead of using a syscall slot (370) just to get a function prototype
  for lkmressys(), add an explicit function prototype to <sys/sysent.h>.
  This also removes unused special case checks for 'lkmressys' from
  makesyscalls.sh.
- Instead of having magic logic in makesyscalls.sh to only generate a
  function prototype the first time 'lkmnosys' is seen, make 'NODEF'
  always not generate a function prototype and include an explicit
  prototype for 'lkmnosys' in <sys/sysent.h>.
- As a result of the fix in (2), update the LKM syscall entries in
  the freebsd32 syscall table to use 'lkmnosys' rather than 'nosys'.
- Use NOPROTO for the __syscall() entry (198) in the native ABI.  This
  avoids the need for magic logic in makesyscalls.h to only generate
  a function prototype the first time 'nosys' is encountered.
2008-09-25 20:07:42 +00:00
obrien
f419b74a96 Add freebsd32 compat shims for ioctl(2)
CDIOREADTOCHEADER and CDIOREADTOCENTRYS requests.
2008-09-22 16:24:36 +00:00
obrien
3b732278f8 Regenerate for r183270. 2008-09-22 16:09:43 +00:00
obrien
52c49eeb94 Add freebsd32 compat shims for ioctl(2)
MDIOCATTACH, MDIOCDETACH, MDIOCQUERY, and MDIOCLIST requests.
2008-09-22 16:09:16 +00:00
obrien
b0fffd3316 Regenerate for r183188. 2008-09-19 15:21:40 +00:00
obrien
0c0da6bba7 Add freebsd32 compat shim for nmount(2).
(and quiet some compiler warnings for vfs_donmount)
2008-09-19 15:17:32 +00:00
obrien
be294ffd1c style(9) 2008-09-15 17:39:40 +00:00
obrien
9966e57b58 Regenerate for r183042. 2008-09-15 17:39:01 +00:00
obrien
a842ca36c9 Fix bug in r100384 (rev 1.2) in which the 32-bit swapon(2) was made
"obsolete, not included in system", where as the system call does exist.
2008-09-15 17:37:41 +00:00
rwatson
70366e8fcc Regenerate following r182123. 2008-08-24 21:23:08 +00:00
rwatson
6a45d33f33 When MPSAFE ttys were merged, a new BSM audit event identifier was
allocated for posix_openpt(2).  Unfortunately, that identifier
conflicts with other events already allocated to other systems in
OpenBSM.  Assign a new globally unique identifier and conform
better to the AUE_ event naming scheme.

This is a stopgap until a new OpenBSM import is done with the
correct identifier, so we'll maintain this as a local diff in svn
until then.

Discussed with:	ed
Obtained from:	TrustedBSD Project
2008-08-24 21:20:35 +00:00
obrien
3b12eba1b0 Add comments on NOARGS, NODEF, and NOPROTO. 2008-08-21 22:57:31 +00:00
ed
4b93c9151b Update system call tables.
The previous commit also included changes to all the system call lists,
but it is a tradition to update these lists in a second commit, so rerun
make sysent to update the $FreeBSD$ tags inside these files to refer to
the latest version of syscalls.master.

Requested by:	rwatson
2008-08-20 08:39:10 +00:00
ed
cc3116a938 Integrate the new MPSAFE TTY layer to the FreeBSD operating system.
The last half year I've been working on a replacement TTY layer for the
FreeBSD kernel. The new TTY layer was designed to improve the following:

- Improved driver model:

  The old TTY layer has a driver model that is not abstract enough to
  make it friendly to use. A good example is the output path, where the
  device drivers directly access the output buffers. This means that an
  in-kernel PPP implementation must always convert network buffers into
  TTY buffers.

  If a PPP implementation would be built on top of the new TTY layer
  (still needs a hooks layer, though), it would allow the PPP
  implementation to directly hand the data to the TTY driver.

- Improved hotplugging:

  With the old TTY layer, it isn't entirely safe to destroy TTY's from
  the system. This implementation has a two-step destructing design,
  where the driver first abandons the TTY. After all threads have left
  the TTY, the TTY layer calls a routine in the driver, which can be
  used to free resources (unit numbers, etc).

  The pts(4) driver also implements this feature, which means
  posix_openpt() will now return PTY's that are created on the fly.

- Improved performance:

  One of the major improvements is the per-TTY mutex, which is expected
  to improve scalability when compared to the old Giant locking.
  Another change is the unbuffered copying to userspace, which is both
  used on TTY device nodes and PTY masters.

Upgrading should be quite straightforward. Unlike previous versions,
existing kernel configuration files do not need to be changed, except
when they reference device drivers that are listed in UPDATING.

Obtained from:		//depot/projects/mpsafetty/...
Approved by:		philip (ex-mentor)
Discussed:		on the lists, at BSDCan, at the DevSummit
Sponsored by:		Snow B.V., the Netherlands
dcons(4) fixed by:	kan
2008-08-20 08:31:58 +00:00
brooks
97c7080d1f style(9): put parentheses around return values. 2008-07-10 19:54:34 +00:00
brooks
4b0dbab536 Regen 2008-07-10 17:46:58 +00:00
brooks
87a2c8d1bf id_t is a 64-bit integer and thus is passed as two arguments like off_t is.
As a result, those arguments must be recombined before calling the real
syscal implementation.  This change fixes 32-bit compatibility for
cpuset_getid(), cpuset_setid(), cpuset_getaffinity(), and
cpuset_setaffinity().
2008-07-10 17:45:57 +00:00
kib
5c017b360f Regen 2008-03-31 12:12:27 +00:00
kib
7a1c49c4b3 Add the freebsd32 compatibility shims for the *at() syscalls.
Reviewed by:	rwatson, rdivacky
Tested by:	pho
2008-03-31 12:08:30 +00:00
dfr
1c5a20ad66 Regen. 2008-03-26 15:24:02 +00:00
dfr
79d2dfdaa6 Add the new kernel-mode NFS Lock Manager. To use it instead of the
user-mode lock manager, build a kernel with the NFSLOCKD option and
add '-k' to 'rpc_lockd_flags' in rc.conf.

Highlights include:

* Thread-safe kernel RPC client - many threads can use the same RPC
  client handle safely with replies being de-multiplexed at the socket
  upcall (typically driven directly by the NIC interrupt) and handed
  off to whichever thread matches the reply. For UDP sockets, many RPC
  clients can share the same socket. This allows the use of a single
  privileged UDP port number to talk to an arbitrary number of remote
  hosts.

* Single-threaded kernel RPC server. Adding support for multi-threaded
  server would be relatively straightforward and would follow
  approximately the Solaris KPI. A single thread should be sufficient
  for the NLM since it should rarely block in normal operation.

* Kernel mode NLM server supporting cancel requests and granted
  callbacks. I've tested the NLM server reasonably extensively - it
  passes both my own tests and the NFS Connectathon locking tests
  running on Solaris, Mac OS X and Ubuntu Linux.

* Userland NLM client supported. While the NLM server doesn't have
  support for the local NFS client's locking needs, it does have to
  field async replies and granted callbacks from remote NLMs that the
  local client has contacted. We relay these replies to the userland
  rpc.lockd over a local domain RPC socket.

* Robust deadlock detection for the local lock manager. In particular
  it will detect deadlocks caused by a lock request that covers more
  than one blocking request. As required by the NLM protocol, all
  deadlock detection happens synchronously - a user is guaranteed that
  if a lock request isn't rejected immediately, the lock will
  eventually be granted. The old system allowed for a 'deferred
  deadlock' condition where a blocked lock request could wake up and
  find that some other deadlock-causing lock owner had beaten them to
  the lock.

* Since both local and remote locks are managed by the same kernel
  locking code, local and remote processes can safely use file locks
  for mutual exclusion. Local processes have no fairness advantage
  compared to remote processes when contending to lock a region that
  has just been unlocked - the local lock manager enforces a strict
  first-come first-served model for both local and remote lockers.

Sponsored by:	Isilon Systems
PR:		95247 107555 115524 116679
MFC after:	2 weeks
2008-03-26 15:23:12 +00:00
jhb
fce41b3b76 Regen. 2008-03-25 19:35:34 +00:00
jhb
a8ff4f0990 Add entries for the cpuset-related system calls. The existing system calls
can be used on little endian systems.

Pointy hat to:	jeff
2008-03-25 19:34:47 +00:00
jeff
acb93d599c Remove kernel support for M:N threading.
While the KSE project was quite successful in bringing threading to
FreeBSD, the M:N approach taken by the kse library was never developed
to its full potential.  Backwards compatibility will be provided via
libmap.conf for dynamically linked binaries and static binaries will
be broken.
2008-03-12 10:12:01 +00:00
ru
841dab65e0 Regenerate for readlink(2). 2008-02-12 20:11:54 +00:00
ru
56aa644e2a Change readlink(2)'s return type and type of the last argument
to match POSIX.

Prodded by:	Alexey Lyashkov
2008-02-12 20:09:04 +00:00
rwatson
0e6bbfc8e3 Regenerate. 2008-01-20 23:44:24 +00:00
rwatson
ff05f9dd9d Use audit events AUE_SHMOPEN and AUE_SHMUNLINK with new system calls
shm_open() and shm_unlink().  More auditing will need to be done for
these calls to capture arguments properly.
2008-01-20 23:43:06 +00:00
jhb
1975c09543 Regen for shm_open(2) and shm_unlink(2). 2008-01-08 22:01:26 +00:00
jhb
8cd9437636 Add a new file descriptor type for IPC shared memory objects and use it to
implement shm_open(2) and shm_unlink(2) in the kernel:
- Each shared memory file descriptor is associated with a swap-backed vm
  object which provides the backing store.  Each descriptor starts off with
  a size of zero, but the size can be altered via ftruncate(2).  The shared
  memory file descriptors also support fstat(2).  read(2), write(2),
  ioctl(2), select(2), poll(2), and kevent(2) are not supported on shared
  memory file descriptors.
- shm_open(2) and shm_unlink(2) are now implemented as system calls that
  manage shared memory file descriptors.  The virtual namespace that maps
  pathnames to shared memory file descriptors is implemented as a hash
  table where the hash key is generated via the 32-bit Fowler/Noll/Vo hash
  of the pathname.
- As an extension, the constant 'SHM_ANON' may be specified in place of the
  path argument to shm_open(2).  In this case, an unnamed shared memory
  file descriptor will be created similar to the IPC_PRIVATE key for
  shmget(2).  Note that the shared memory object can still be shared among
  processes by sharing the file descriptor via fork(2) or sendmsg(2), but
  it is unnamed.  This effectively serves to implement the getmemfd() idea
  bandied about the lists several times over the years.
- The backing store for shared memory file descriptors are garbage
  collected when they are not referenced by any open file descriptors or
  the shm_open(2) virtual namespace.

Submitted by:	dillon, peter (previous versions)
Submitted by:	rwatson (I based this on his version)
Reviewed by:	alc (suggested converting getmemfd() to shm_open())
2008-01-08 21:58:16 +00:00
jhb
95c5027710 Bah, remove last vestiges of some statfs conversion fixes that aren't quite
ready for CVS yet that snuck into 1.68.

Pointy hat to:	jhb
2007-12-10 19:42:23 +00:00
scottl
4570db7ea2 Grrr, remove an unused variable missed in the last commit. 2007-12-08 01:41:31 +00:00
scottl
38b1bc6f6b Don't expect a return value from statfs_scale_blocks(). 2007-12-07 22:32:09 +00:00
jhb
f05fcb702a Regen. 2007-12-06 23:37:26 +00:00
jhb
d675d97b05 Add freebsd32 compat wrappers for msgctl() and __semctl() using
kern_msgctl() and kern_semctl().

MFC after:	1 week
2007-12-06 23:36:57 +00:00
jhb
f4e63ed7ac Add freebsd32 compat wrappers for msgctl() and _semctl() using
kern_msgctl() and kern_semctl().

MFC after:	1 week
2007-12-06 23:35:29 +00:00
jhb
eb9403bc51 Move 32-bit SYSV IPC structure definitions into freebsd32_ipc.h.
MFC after:	1 week
2007-12-06 23:23:16 +00:00
jhb
0373a29045 Move several data structure definitions out of freebsd32_misc.c and into
freebsd32.h instead.

MFC after:	1 week
2007-12-06 23:11:27 +00:00
jkim
7c00aa0ce7 Remove redundant checks for msgsnd(3) and msgrcv(3).
COMPAT_IA32 (implicitly) requires SYSVSEM, SYSVSHM and SYSVMSG in kernel.

Pointed out by:	jhb
2007-12-04 20:25:41 +00:00
jhb
736eaf5ce3 Rework the routines to convert a 5.x+ statfs structure (with fixed-size
64-bit counters) to a 4.x statfs structure (with long-sized counters).
- For block counters, we scale up the block size sufficiently large so
  that the resulting block counts fit into a the long-sized (long for the
  ABI, so 32-bit in freebsd32) counters.  In 4.x the NFS client's statfs
  VOP did this already.  This can lie about the block size to 4.x binaries,
  but it presents a more accurate picture of the ratios of free and
  available space.
- For non-block counters, fix the freebsd32 stats converter to cap the
  values at INT32_MAX rather than losing the upper 32-bits to match the
  behavior of the 4.x statfs conversion routine in vfs_syscalls.c

Approved by:	re (kensmith)
2007-08-28 20:28:12 +00:00
davidxu
3fef07aaec Regenerate.
Approved by: re(kensmith)
2007-08-16 05:32:26 +00:00
davidxu
06ae13be4d Add thr_kill2 compat32 syscall.
Submitted by: Tijl Coosemans tijl at ulyssis dot org
Approved by: re (kensmith)
2007-08-16 05:30:04 +00:00
peter
01169f916d Add compat6 wrapper code for mmap/lseek/pread/pwrite/truncate/ftruncate.
Approved by:  re (kensmith)
2007-07-04 23:04:41 +00:00
peter
45430aa747 Regenerate after mmap/lseek/etc syscall changes
Approved by:  re (kensmith)
2007-07-04 23:03:50 +00:00
peter
7acc95de6e Add i386 emulation wrappers for mmap/lseek/etc. These use COMPAT6, so
you must use the already existing, already in generic, COMPAT_FREEBSD6
kernel option for running old 32 bit binaries.

Approved by:  re (kensmith)
2007-07-04 23:02:40 +00:00
mjacob
b967f0e2c0 Try a cheap way to get around gcc4.2 believing that user arguments
to system calls can change across intervening functions.
2007-06-17 04:37:57 +00:00
emaste
11712476cc Remove stale 'XXX implement' comments for syscalls which have since been
implemented.
2007-06-15 21:54:26 +00:00