Commit Graph

447 Commits

Author SHA1 Message Date
David E. O'Brien
1997c537be Match the LINUX32's style with existing style
Submitted by:	Jung-uk Kim <jkim@niksun.com>

Use positive, not negative logic.
2005-01-14 04:44:56 +00:00
David E. O'Brien
9c0552ce3e Fix Linux compat 'uname -m' on AMD64.
Submitted by:	Jung-uk Kim <jkim@niksun.com>
		(patch reworked by me)
2005-01-14 03:45:26 +00:00
Warner Losh
898b0535b7 Start each of the license/copyright comments with /*- 2005-01-05 22:34:37 +00:00
Poul-Henning Kamp
c9b621fb98 Do not blindly pass linux filesystem specific mount data across. 2004-12-03 18:14:22 +00:00
Poul-Henning Kamp
f8524838b9 Ignore MNT_NODEV option, it is implicit in choice of filesystem. 2004-11-26 07:39:20 +00:00
David Malone
08de85f54a Rename thread args to be called "td" rather than "p" to be
consistent with other bits of this file. There should be no
functional change.

Submitted by:	Andrea Campi (many moons ago)
MFC after:	2 month
2004-10-10 18:34:30 +00:00
John Baldwin
78c85e8dfc Rework how we store process times in the kernel such that we always store
the raw values including for child process statistics and only compute the
system and user timevals on demand.

- Fix the various kern_wait() syscall wrappers to only pass in a rusage
  pointer if they are going to use the result.
- Add a kern_getrusage() function for the ABI syscalls to use so that they
  don't have to play stackgap games to call getrusage().
- Fix the svr4_sys_times() syscall to just call calcru() to calculate the
  times it needs rather than calling getrusage() twice with associated
  stackgap, etc.
- Add a new rusage_ext structure to store raw time stats such as tick counts
  for user, system, and interrupt time as well as a bintime of the total
  runtime.  A new p_rux field in struct proc replaces the same inline fields
  from struct proc (i.e. p_[isu]ticks, p_[isu]u, and p_runtime).  A new p_crux
  field in struct proc contains the "raw" child time usage statistics.
  ruadd() has been changed to handle adding the associated rusage_ext
  structures as well as the values in rusage.  Effectively, the values in
  rusage_ext replace the ru_utime and ru_stime values in struct rusage.  These
  two fields in struct rusage are no longer used in the kernel.
- calcru() has been split into a static worker function calcru1() that
  calculates appropriate timevals for user and system time as well as updating
  the rux_[isu]u fields of a passed in rusage_ext structure.  calcru() uses a
  copy of the process' p_rux structure to compute the timevals after updating
  the runtime appropriately if any of the threads in that process are
  currently executing.  It also now only locks sched_lock internally while
  doing the rux_runtime fixup.  calcru() now only requires the caller to
  hold the proc lock and calcru1() only requires the proc lock internally.
  calcru() also no longer allows callers to ask for an interrupt timeval
  since none of them actually did.
- calcru() now correctly handles threads executing on other CPUs.
- A new calccru() function computes the child system and user timevals by
  calling calcru1() on p_crux.  Note that this means that any code that wants
  child times must now call this function rather than reading from p_cru
  directly.  This function also requires the proc lock.
- This finishes the locking for rusage and friends so some of the Giant locks
  in exit1() and kern_wait() are now gone.
- The locking in ttyinfo() has been tweaked so that a shared lock of the
  proctree lock is used to protect the process group rather than the process
  group lock.  By holding this lock until the end of the function we now
  ensure that the process/thread that we pick to dump info about will no
  longer vanish while we are trying to output its info to the console.

Submitted by:	bde (mostly)
MFC after:	1 month
2004-10-05 18:51:11 +00:00
Poul-Henning Kamp
f69f5fbd42 Hold thread reference while frobbing cdevsw. 2004-09-24 06:37:00 +00:00
John Baldwin
2ca25ab53e Fix the ABI wrappers to use kern_fcntl() rather than calling fcntl()
directly.  This removes a few more users of the stackgap and also marks
the syscalls using these wrappers MP safe where appropriate.

Tested on:	i386 with linux acroread5
Compiled on:	i386, alpha LINT
2004-08-24 20:21:21 +00:00
Dag-Erling Smørgrav
72261b9f61 Don't try to translate the control message unless we're certain it's
valid; otherwise a caller could trick us into changing any 32-bit word
in kernel memory to LINUX_SOL_SOCKET (0x00000001) if its previous value
is SOL_SOCKET (0x0000ffff).

MFC after:	3 days
2004-08-23 12:41:29 +00:00
David E. O'Brien
b61c60d401 Fix the 'DEBUG' argument code to unbreak the amd64 LINT build. 2004-08-16 12:15:07 +00:00
David E. O'Brien
4a16b489ca Fix the 'DEBUG' argument code to unbreak the amd64 LINT build. 2004-08-16 11:12:57 +00:00
David E. O'Brien
3a2e3a4aa7 Fix the 'DEBUG' argument code to unbreak the LINT build. 2004-08-16 10:36:12 +00:00
Tim J. Robbins
4af2762336 Changes to MI Linux emulation code necessary to run 32-bit Linux binaries
on AMD64, and the general case where the emulated platform has different
size pointers than we use natively:
- declare certain structure members as l_uintptr_t and use the new PTRIN
  and PTROUT macros to convert to and from native pointers.
- declare some structures __packed on amd64 when the layout would differ
  from that used on i386.
- include <machine/../linux32/linux.h> instead of <machine/../linux/linux.h>
  if compiling with COMPAT_LINUX32. This will need to be revisited before
  32-bit and 64-bit Linux emulation support can coexist in the same kernel.
- other small scattered changes.

This should be a no-op on i386 and Alpha.
2004-08-16 07:28:16 +00:00
Tim J. Robbins
ae8e14a6ac Replace linux_getitimer() and linux_setitimer() with implementations
based on those in freebsd32_misc.c, removing the assumption that Linux
uses the same layout for struct itimerval as we use natively.
2004-08-15 12:34:15 +00:00
Tim J. Robbins
d1d6dbf120 Avoid assuming that l_timeval is the same as the native struct timeval
in linux_select().
2004-08-15 12:24:05 +00:00
Tim J. Robbins
6fa534bad8 Use sv_psstrings from the current process's sysentvec structure instead
of PS_STRINGS. This is a no-op at present, but it will be needed when
running 32-bit Linux binaries on amd64 to ensure PS_STRINGS is in
addressable memory.
2004-08-15 11:52:45 +00:00
Poul-Henning Kamp
41befa53a4 Add XXX comment about findcdev() misuse. 2004-08-14 08:38:17 +00:00
Poul-Henning Kamp
ebb48ffd65 Use kernel_vmount() instead of vfs_nmount(). 2004-07-27 21:38:42 +00:00
Colin Percival
56f21b9d74 Rename suser_cred()'s PRISON_ROOT flag to SUSER_ALLOWJAIL. This is
somewhat clearer, but more importantly allows for a consistent naming
scheme for suser_cred flags.

The old name is still defined, but will be removed in a few days (unless I
hear any complaints...)

Discussed with:	rwatson, scottl
Requested by:	jhb
2004-07-26 07:24:04 +00:00
David Malone
fb75797e40 I missed two pieces of the commit to this file. Robert has already
added one, this adds the other.
2004-07-18 09:26:34 +00:00
Robert Watson
38da2381cd Remove 'sg' argument to linux_sendto_hdrincl, which is what I think was
intended.  This fixes the build, but might require revision.
2004-07-18 04:09:40 +00:00
David Malone
e140eb430c Add a kern_setsockopt and kern_getsockopt which can read the option
values from either user land or from the kernel. Use them for
[gs]etsockopt and to clean up some calls to [gs]etsockopt in the
Linux emulation code that uses the stackgap.
2004-07-17 21:06:36 +00:00
Poul-Henning Kamp
552afd9c12 Clean up and wash struct iovec and struct uio handling.
Add copyiniov() which copies a struct iovec array in from userland into
a malloc'ed struct iovec.  Caller frees.

Change uiofromiov() to malloc the uio (caller frees) and name it
copyinuio() which is more appropriate.

Add cloneuio() which returns a malloc'ed copy.  Caller frees.

Use them throughout.
2004-07-10 15:42:16 +00:00
Poul-Henning Kamp
87d72a8f27 Use a couple of regular kernel entry points, rather than COMPAT_43
entry points.
2004-07-08 10:18:07 +00:00
Alexander Leidinger
a92c890fd1 Implement SNDCTL_DSP_SETDUPLEX. This may fix sound apps which want to
use full duplex mode.

Approved by:	matk
2004-07-02 15:31:44 +00:00
Bruce Evans
d436410960 Include <sys/mutex.h> and its prerequisite <sys/lock.h> instead of
depending on namespace pollution in <sys/vnode.h> for the definition
of GIANT_REQUIRED.

Sorted includes.
2004-06-23 06:35:43 +00:00
Robert Watson
537ca45a2e Mark linux_emul_convpath() as GIANT_REQUIRED. 2004-06-22 04:22:34 +00:00
Bruce M Simpson
cc5f91ee35 Add stub for Linux SOUND_MIXER_READ_RECMASK, required by some Linux sound
applications.

PR:		misc/27471
Submitted by:	Gavin Atkinson (with cleanups)
2004-06-18 14:36:24 +00:00
Bruce M Simpson
bf4f8992cd Add a stub for the Linux SOUND_MIXER_INFO ioctl (even though we don't
actually implement it), as some applications, such as RealProducer,
expect to be able to use it.

PR:		kern/65971
Submitted by:	Matt Wright
2004-06-18 14:25:44 +00:00
Bruce M Simpson
3f77a2b479 Linux applications expect to be able to call SIOCGIFCONF with an
NULL ifc.ifc_buf pointer, to determine the expected buffer size.

The submitted fix only takes account of interfaces with an AF_INET
address configured. This could no doubt be improved.

PR:		kern/45753
Submitted by:	Jacques Garrigue (with cleanups)
2004-06-18 14:06:46 +00:00
Bruce M Simpson
36db02ff0b Fix the VT_SETMODE/CDROMIOCTOCENTRY problem correctly.
Reviewed by:	tjr
2004-06-18 13:36:30 +00:00
Bruce M Simpson
e41fce295e Fix two attempts to use an unchecked NULL pointer provided from the
userland, for the CDIOREADTOCENTRY and VT_SETMODE cases respectively.

Noticed by: tjr
2004-06-18 09:13:35 +00:00
Poul-Henning Kamp
f3732fd15b Second half of the dev_t cleanup.
The big lines are:
	NODEV -> NULL
	NOUDEV -> NODEV
	udev_t -> dev_t
	udev2dev() -> findcdev()

Various minor adjustments including handling of userland access to kernel
space struct cdev etc.
2004-06-17 17:16:53 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
Poul-Henning Kamp
71e9d5f9c8 Add support for more linux ioctls.
I've had this sitting in my tree for a long time and I can't seem to
find who sent it to me in the first place, apologies to whoever is
missing out on a Contributed by: line here.

I belive it works as it should.
2004-06-14 07:26:23 +00:00
Poul-Henning Kamp
1930e303cf Deorbit COMPAT_SUNOS.
We inherited this from the sparc32 port of BSD4.4-Lite1.  We have neither
a sparc32 port nor a SunOS4.x compatibility desire these days.
2004-06-11 11:16:26 +00:00
John Baldwin
b7e23e826c - Replace wait1() with a kern_wait() function that accepts the pid,
options, status pointer and rusage pointer as arguments.  It is up to
  the caller to copyout the status and rusage to userland if needed.  This
  lets us axe the 'compat' argument and hide all that functionality in
  owait(), by the way.  This also cleans up some locking in kern_wait()
  since it no longer has to drop locks around copyout() since all the
  copyout()'s are deferred.
- Convert owait(), wait4(), and the various ABI compat wait() syscalls to
  use kern_wait() rather than wait1() or wait4().  This removes a bit
  more stackgap usage.

Tested on:	i386
Compiled on:	i386, alpha, amd64
2004-03-17 20:00:00 +00:00
Tim J. Robbins
7b0d017245 Use vfs_nmount() to mount linprocfs filesystems in linux_mount();
linprocfs doesn't support the old mount interface.
2004-03-16 09:05:56 +00:00
Tim J. Robbins
2ba9b76668 Correct size argument passed to copyinstr() in linux_mount(): mntfromname
and mntonname are both MNAMELEN characters long, not MFSNAMELEN.
2004-03-16 08:37:19 +00:00
Poul-Henning Kamp
651b11eaf2 Remove unused second arg to vfinddev().
Don't call addaliasu() on VBLK nodes.
2004-03-11 16:33:11 +00:00
Poul-Henning Kamp
816d62bbb9 Device megapatch 5/6:
Remove the unused second argument from udev2dev().

Convert all remaining users of makedev() to use udev2dev().  The
semantic difference is that udev2dev() will only locate a pre-existing
dev_t, it will not line makedev() create a new one.

Apart from the tiny well controlled windown in D_PSEUDO drivers,
there should no longer be any "anonymous" dev_t's in the system
now, only dev_t's created with make_dev() and make_dev_alias()
2004-02-21 21:32:15 +00:00
Bruce M Simpson
a1166f2439 Add BSD compatibility tty ioctls LINUX_TIOCSBRK and LINUX_TIOCCBRK. This
addition appears to allow VMware 3 Workstation to operate with nmdm(4)
as a virtual COM device.

Tested by:	Guido van Rooij
2004-02-19 12:38:12 +00:00
John Baldwin
91d5354a2c Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
Don Lewis
ff5f695e78 VOP_GETATTR() wants the vnode passed to it to be locked. Instead
of adding the code to lock and unlock the vnodes and taking care
to avoid deadlock, simplify linux_emul_convpath() by comparing the
vnode pointers directly instead of comparing their va_fsid and
va_fileid attributes.  This allows the removal of the calls to
VOP_GETATTR().
2004-01-14 22:38:03 +00:00
Alan Cox
277b62040d Lock the traversal of the vm object list. Use TAILQ_FOREACH consistently. 2004-01-02 19:29:31 +00:00
Bruce Evans
3db2a84395 Quick fix for LINT breakage caused by interface changes in accept(2), etc.
The log message for rev.1.160 of kern/uipc_syscalls.c and associated
changes only claimed to add restrict qualifiers (which have no effect in
the kernel so they probably shouldn't be added), but the following
interface changes were also made:
- caddr_t to `void *' and `struct sockaddr_t *'
- `int *' to `socklen_t *'.
These interface changes are not quite null, and this fix is quick (like
the changes in uipc_syscalls 1.160) because it uses bogus casts instead
of complete bounds-checked conversions.

Things should be fixed better when the conversions can be done without
using the stack gap.  linux_check_hdrincl() already uses the stack gap
and is fixed completely though the type mismatches in it were not fatal
(there were only fatal type mismatches from unopaquing pointers to
[o]sockaddr't's -- the difference between accept()'s args and oaccept()'s
args is now non-opaque, but this is not reflected in their args structs).
2003-12-25 09:59:02 +00:00
Alexander Kabaev
501f5ff123 Do not call VOP_GETATTR in getdents function. It does not serve any
purpose and the resulting vattr structure was ignored. In addition,
the VOP_GETATTR call was made with no vnode lock held, resulting in
vnode locking violation panic with debug kernels.

Reported by:	truckman

Approved by:	re@ (rwatson)
2003-11-19 04:12:32 +00:00
Robert Watson
0b92da272c Add a MAC check for VOP_LOOKUP() in the Linux getwcd() implementation.
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-17 18:57:20 +00:00
Maxim Sobolev
d09c47acd9 Pull latest changes from OpenBSD:
- improve sysinfo(2) syscall;
- add dummy fadvise64(2) syscall;
- add dummy *xattr(2) family of syscalls;
- add protos for the syscalls 222-225, 238-249 and 253-267;
- add exit_group(2) syscall, which is currently just wired to exit(2).

Obtained from:  OpenBSD
MFC after:      2 weeks
2003-11-16 15:07:10 +00:00