Commit Graph

1978 Commits

Author SHA1 Message Date
Jung-uk Kim
c9cefec159 Support memory wraparound instead of high memory as VM86 mode does.
Suggested by:	delphij
2010-03-22 18:43:36 +00:00
Jung-uk Kim
a6c8a9c258 Fix i386 PAE kernel build.
Reported by:	tinderbox
2010-03-22 17:30:34 +00:00
Ed Schouten
0fef797f4a Actually make O_DIRECTORY work.
According to POSIX open() must return ENOTDIR when the path name does
not refer to a path name. Change vn_open() to respect this flag. This
also simplifies the Linuxolator a bit.
2010-03-21 20:43:23 +00:00
Jung-uk Kim
ef8201d39d - Map EBDA if available and add 64KB above 1MB (high memory), just in case.
- Print the initial memory map when bootverbose is set.
- Change the page fault address format from linear to %cs:%ip style.
- Move duplicate code into a newly added function.
- Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
Konstantin Belousov
28ad01d2ba Regen 2010-03-19 11:14:37 +00:00
Konstantin Belousov
f7ae46da1f Remove empty line.
MFC after:	2 weeks
2010-03-19 11:13:42 +00:00
Konstantin Belousov
afde2b6593 Implement compat32 shims for mqueuefs.
Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:10:24 +00:00
Konstantin Belousov
0e5d5bc279 Implement compat32 shims for ksem syscalls.
Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:08:43 +00:00
Konstantin Belousov
75d633cbf6 Move SysV IPC freebsd32 compat shims from freebsd32_misc.c to corresponding
sysv_{msg,sem,shm}.c files.

Mark SysV IPC freebsd32 syscalls as NOSTD and add required
SYSCALL_INIT_HELPER/SYSCALL32_INIT_HELPERs to provide auto
register/unregister on module load.

This makes COMPAT_FREEBSD32 functional with SysV IPC compiled and loaded
as modules.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:04:42 +00:00
Konstantin Belousov
4cfc39cfa6 Move SysV IPC freebsd32 compat shims helpers from freebsd32_misc.c to
sysv_ipc.c.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:01:51 +00:00
Konstantin Belousov
0687ba3e90 Introduce SYSCALL_INIT_HELPER and SYSCALL32_INIT_HELPER macros and
neccessary support functions to allow registering dynamically loaded
syscalls from the MOD_LOAD handlers. Helpers handle registration
failures semi-automatically.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 10:56:30 +00:00
Konstantin Belousov
99b331a982 FOr SYSCALL_MODULE_HELPER, use "sys/<syscallname>" module name.
FOr SYSCALL32_MODULE_HELPER, use "sys32/<syscallname>" module name.
This avoids modules name conflict when compat32 syscall does not
need shims.

Note that SYSCALL_MODULE_HELPER is going to be unused in the tree by
several next commits.

Suggested by:	jhb
MFC after:	2 weeks
2010-03-19 10:52:54 +00:00
Konstantin Belousov
c5e4763dd3 Make freebsd32_copyiniov() available outside of freebsd32_misc.
MFC after:	2 weeks
2010-03-19 10:49:03 +00:00
Jung-uk Kim
b92184ec0a Detect illegal access to unmapped memory within real mode emulator to aid
debugging.  Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
Nathan Whitehorn
6754ffc8a1 Regen after big endian compatibility import. 2010-03-11 14:56:59 +00:00
Nathan Whitehorn
841c0c7ec7 Provide groundwork for 32-bit binary compatibility on non-x86 platforms,
for upcoming 64-bit PowerPC and MIPS support. This renames the COMPAT_IA32
option to COMPAT_FREEBSD32, removes some IA32-specific code from MI parts
of the kernel and enhances the freebsd32 compatibility code to support
big-endian platforms.

Reviewed by:	kib, jhb
2010-03-11 14:49:06 +00:00
Ed Schouten
ec492b4973 Make /proc/self/fd `work'.
On Linux, /proc/<pid>/fd is comparable to fdescfs, where it allows you
to inspect the file descriptors used by each process. Glibc's ttyname()
works by performing a readlink() on these nodes, since all nodes in this
directory are symlinks.

It is a bit hard to implement this in linprocfs right now, so I am not
going to bother. Add a way to make ttyname(3) work, by adding a
/proc/<pid>/fd symlink, which points to /dev/fd only if the calling
process matches. When fdescfs is mounted, this will cause the
readlink() in ttyname() to fail, causing it to fall back on manually
finding a matching node in /dev.

Discussed on:	emulation@
2010-03-07 10:43:45 +00:00
Joel Dahl
2f7bcda248 The NetBSD Foundation has granted permission to remove clause 3 and 4 from
their software.

Obtained from:	NetBSD
2010-03-01 17:20:04 +00:00
Pawel Jakub Dawidek
957d68dd91 No need to include security/mac/mac_framework.h here. 2010-02-18 22:26:01 +00:00
Xin LI
5cb9c68cc9 - Return EAFNOSUPPORT instead of EINVAL for unsupported address family,
this matches the Linux behavior.
 - Check if we have sufficient space allocated for socket structure, which
   fixes a buffer overflow when wrong length is being passed into the
   emulation layer. [1]

PR:		kern/138860
Submitted by:	Mateusz Guzik <mjguzik gmail com>
Reported by:	Alexander Best [1]
MFC after:	2 weeks
2010-02-09 22:30:51 +00:00
Ed Schouten
790f66db55 Remove unused LIBCOMPAT keyword from syscalls.master. 2010-02-08 10:02:01 +00:00
Wojciech A. Koszek
edfe497ed4 Let us to use our libusb(3) in Linuxolator.
With this change, Linux binaries can work with our libusb(3) when
it's compiled against our header files on GNU/Linux system -- this
solves the problem with differences between /dev layouts.

With ported libusb(3), I am able to use my USB JTAG cable with Linux
binaries that support it.

Reviewed by:	thompsa
2010-01-18 22:46:06 +00:00
Alexander Leidinger
2883eb1ce1 Whitespace change to be able to provide the correct commit log for r202364:
---snip---
Add video clipping support but with the caveats below.

Background info:

Video clipping allows the user to provide either a series of clip rectangles
or a clip bitmap to the driver and have the driver mask the video according
to the clipping specs provided.

Adding support for clipping to the FreeBSD Linux emulator is problematic
because it seems that this feature is not supported by many drivers and
therefore it is ignored by many applications. Unfortunately, when not
using it, rather than passing in a null clipping list, some apps leave the
clipping fields uninitialized, casuing random values to be passed in. In
the case where the driver does not use the clipping info, this is not a
problem (although it is bad form). But the Linux emulator does not know
which drivers will use this and which won't, so the Linux emulator must
try to handle this clip list, and deal gracefully with cases where the
values seem to be uninitialized.

Video clipping info is passed in using the VIDIOCSWIN ioctl in two fields
in the video_window structure: the integer clipcount and the pointer clips.

How the linuxulator handles this from this commit on:

    * if (clipcount == VIDEO_CLIP_BITMAP)
      The clips variable is a void * pointer to a 128*625 byte
      (1024*625 bit) memory area containing a bitmap of the clipping area.
      The pointer in the video_window structure is copied, but no
      video_clip structures are copied.
    * if (clipcount > 0 && clipcount <= 16384)
      The clips variable is pointer to a list of video_clip structures. Up
      to clipcount structures are copied and passed to the driver.
      The upper limit of 16384 was imposed here so that user code that does
      not properly initialize clipcount falls through below and no attempt
      is made to copy an uninitialized list. This value was found by
      examining Linux drivers that support the clip list.
    * else
      The clipcount is either negative (but not VIDEO_CLIP_BITMAP), zero or
      positive (> 16384).
      All these cases are treated as invalid data. Both the clipcount field
      and clips pointer are forced to zero/NULL and passed to the driver.

It should be noted that, at the time of developing this V4L emulator code,
the pwc(4) V4L driver does not support clipping.

Submitted by:	J.R. Oldroyd <fbsd@opal.com>
MFC after:	1 month
---snip---
2010-01-15 15:38:31 +00:00
Alexander Leidinger
0f6800b944 This is v4l support for the linuxulator. This allows to access FreeBSD
native devices which support the v4l API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd driver.

Not tested is firmware upload, framebuffer stuff and video tuner stuff
due to lack of hardware.
The clipping part (VIDIOCSWIN) needs a little bit of further work (partly
in progress, but can not be tested due to lack of a suitable device).

The submitter tested this sucessfully with Skype and flash apps on amd64 and
i386 with the multimedia/pwcbsd driver.

Submitted by:	J.R. Oldroyd <fbsd@opal.com>
2010-01-15 14:58:19 +00:00
Brooks Davis
3ef5ae2dde Since all other comparisons involving ngroups_max use
"ngroups_max + 1", use ">= ngroups_max+1" instead of the equivalent
"> ngroups_max" to reduce confusion.
2010-01-15 07:05:00 +00:00
Brooks Davis
412f9500e2 Replace the static NGROUPS=NGROUPS_MAX+1=1024 with a dynamic
kern.ngroups+1.  kern.ngroups can range from NGROUPS_MAX=1023 to
INT_MAX-1.  Given that the Windows group limit is 1024, this range
should be sufficient for most applications.

MFC after:	1 month
2010-01-12 07:49:34 +00:00
Kirk McKusick
e268f54cb4 Background:
When renaming a directory it passes through several intermediate
states. First its new name will be created causing it to have two
names (from possibly different parents). Next, if it has different
parents, its value of ".." will be changed from pointing to the old
parent to pointing to the new parent. Concurrently, its old name
will be removed bringing it back into a consistent state. When fsck
encounters an extra name for a directory, it offers to remove the
"extraneous hard link"; when it finds that the names have been
changed but the update to ".." has not happened, it offers to rewrite
".." to point at the correct parent. Both of these changes were
considered unexpected so would cause fsck in preen mode or fsck in
background mode to fail with the need to run fsck manually to fix
these problems. Fsck running in preen mode or background mode now
corrects these expected inconsistencies that arise during directory
rename. The functionality added with this update is used by fsck
running in background mode to make these fixes.

Solution:

This update adds three new fsck sysctl commands to support background
fsck in correcting expected inconsistencies that arise from incomplete
directory rename operations. They are:

setcwd(dirinode) - set the current directory to dirinode in the
    filesystem associated with the snapshot.
setdotdot(oldvalue, newvalue) - Verify that the inode number for ".."
    in the current directory is oldvalue then change it to newvalue.
unlink(nameptr, oldvalue) - Verify that the inode number associated
    with nameptr in the current directory is oldvalue then unlink it.

As with all other fsck sysctls, these new ones may only be used by
processes with appropriate priviledge.

Reported by:    	jeff
Security issues:	rwatson
2010-01-11 20:44:05 +00:00
Martin Blapp
c2ede4b379 Remove extraneous semicolons, no functional changes.
Submitted by:	Marc Balmer <marc@msys.ch>
MFC after:	1 week
2010-01-07 21:01:37 +00:00
Konstantin Belousov
9ae781dfcf Signal 0 is used to check the permission for current process to signal
target one. Since r184058, linux_do_tkill() calls tdsignal() instead of
kill(), without checking for validity of supplied signal number. Prevent
panic when supplied signal is 0 by finishing work after checks.

Found and tested by:	scf
MFC after:	3 days
2009-12-18 14:27:18 +00:00
Warner Losh
8ffab8645b Revert 200606. 2009-12-16 21:53:56 +00:00
Warner Losh
42b3331b8a Fix compiling FREEBSD_COMPAT[4,5,6] without FREEBSD_COMPAT7.
Note: Not sure this is the right way to do compat, but it makes the
headers consistent with the implementations.
2009-12-16 17:17:40 +00:00
Jung-uk Kim
3afa8e569e Add two new debugging tunables for x86bios instead of abusing bootverbose,
i.e., debug.x86bios.call and debug.x86bios.int.
2009-12-15 22:44:28 +00:00
Konstantin Belousov
9afcc9986c Regenerate. 2009-12-04 21:53:20 +00:00
Konstantin Belousov
195edf8a5a Add several syscall compat32 entries for acl manipulation.
They do not require translation of the arguments.

Tested by:	bsam
MFC after:	1 week
2009-12-04 21:52:31 +00:00
Alexander Leidinger
7b6bedd3a7 This is v4l support for the linuxulator. This allows to access FreeBSD
native devices which support the v4l API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd driver.

Not tested is firmware upload, framebuffer stuff and video tuner stuff
due to lack of hardware.
The clipping part (VIDIOCSWIN) needs a little bit of further work (partly
in progress, but can not be tested due to lack of a suitable device).

The submitter tested this sucessfully with Skype and flash apps on amd64 and
i386 with the multimedia/pwcbsd driver.

Submitted by:	J.R. Oldroyd <fbsd@opal.com>
2009-12-04 21:06:54 +00:00
Alexander Leidinger
63f743fb25 Import the unchanged v4l videodev.h from the vendor branch. 2009-12-04 20:46:45 +00:00
Ed Schouten
0ab939d261 Include <sys/tty.h> instead of <sys/termios.h>.
Right now <sys/termios.h> includes <sys/ttycom.h>, which provides the
TTY ioctls to the svr4 code. We need both struct termios and the ioctls,
so include <sys/tty.h> for now.
2009-11-28 16:30:06 +00:00
Alexander Leidinger
f3d62ac43d Fix typo in kernel message. The fix is based upon the patch in the PR.
PR:		kern/140279
Submitted by:	Alexander Best <alexbestms@math.uni-muenster.de>
MFC after:	1 week
2009-11-05 07:37:48 +00:00
Rui Paulo
060ed74b53 Revert a functional change that snuck in. 2009-11-02 19:13:12 +00:00
Rui Paulo
f8b8dab2eb Fix a non-style change that snuck in.
Spotted by: danfe
2009-11-02 18:51:24 +00:00
Rui Paulo
99081d1c61 Big style cleanup. While there remove references to FreeBSD versions
older than 6.0.

Submitted by:	Paul B Mahol <onemda at gmail.com>
2009-11-02 11:07:42 +00:00
Konstantin Belousov
063e9958a6 Regenerate 2009-10-27 11:02:04 +00:00
Konstantin Belousov
066d836b02 Current pselect(3) is implemented in usermode and thus vulnerable to
well-known race condition, which elimination was the reason for the
function appearance in first place. If sigmask supplied as argument to
pselect() enables a signal, the signal might be delivered before thread
called select(2), causing lost wakeup. Reimplement pselect() in kernel,
making change of sigmask and sleep atomic.

Since signal shall be delivered to the usermode, but sigmask restored,
set TDP_OLDMASK and save old mask in td_oldsigmask. The TDP_OLDMASK
should be cleared by ast() in case signal was not gelivered during
syscall execution.

Reviewed by:	davidxu
Tested by:	pho
MFC after:	1 month
2009-10-27 10:55:34 +00:00
Konstantin Belousov
d6e029adbe In r197963, a race with thread being selected for signal delivery
while in kernel mode, and later changing signal mask to block the
signal, was fixed for sigprocmask(2) and ptread_exit(3). The same race
exists for sigreturn(2), setcontext(2) and swapcontext(2) syscalls.

Use kern_sigprocmask() instead of direct manipulation of td_sigmask to
reschedule newly blocked signals, closing the race.

Reviewed by:	davidxu
Tested by:	pho
MFC after:	1 month
2009-10-27 10:47:58 +00:00
Konstantin Belousov
84440afb54 In kern_sigsuspend(), better manipulate thread signal mask using
kern_sigprocmask() to properly notify other possible candidate threads
for signal delivery.

Since sigsuspend() shall only return to usermode after a signal was
delivered, do cursig/postsig loop immediately after waiting for
signal, repeating the wait if wakeup was spurious due to race with
other thread fetching signal from the process queue before us. Add
thread_suspend_check() call to allow the thread to be stopped or killed
while in loop.

Modify last argument of kern_sigprocmask() from boolean to flags,
allowing the function to be called with locked proc. Convertion of the
callers that supplied 1 to the old argument will be done in the next
commit, and due to SIGPROCMASK_OLD value equial to 1, code is formally
correct in between.

Reviewed by:	davidxu
Tested by:	pho
MFC after:	1 month
2009-10-27 10:42:24 +00:00
Bjoern A. Zeeb
d97bee3e7e Unconditionally call the setsockopt for IPV6_V6ONLY for v6 linux sockets
no matter whether we are compiled as module or if our default of the
net.inet6.ip6.v6only sysctl already matches what we would set.

This avoids unnecessary complications with modules, VIMAGES, INET6 and
the sysctl value, especially considering that most users will use
linux compat as a module.

Discussed with:	kib, rwatson (weeks ago)
Reviewed by:	rwatson
MFC after:	6 weeks
2009-10-25 09:58:56 +00:00
Jung-uk Kim
5a0a9182fe Fix a copy-and-pasto in the previous commit. 2009-10-19 21:01:42 +00:00
Jung-uk Kim
3219f535d9 Rewrite x86bios and update its dependent drivers.
- Do not map entire real mode memory (1MB).  Instead, we map IVT/BDA and
ROM area separately.  Most notably, ROM area is mapped as device memory
(uncacheable) as it should be.  User memory is dynamically allocated and
free'ed with contigmalloc(9) and contigfree(9).  Remove now redundant and
potentially dangerous x86bios_alloc.c.  If this emulator ever grows to
support non-PC hardware, we may implement it with rman(9) later.
- Move all host-specific initializations from x86emu_util.c to x86bios.c and
remove now unnecessary x86emu_util.c.  Currently, non-PC hardware is not
supported.  We may use bus_space(9) later when the KPI is fixed.
- Replace all bzero() calls for emulated registers with more obviously named
x86bios_init_regs().  This function also initializes DS and SS properly.
- Add x86bios_get_intr().  This function checks if the interrupt vector is
available for the platform.  It is not necessary for PC-compatible hardware
but it may be needed later. ;-)
- Do not try turning off monitor if DPMS does not support the state.
- Allocate stable memory for VESA OEM strings instead of just holding
pointers to them.  They may or may not be accessible always.  Fix a memory
leak of video mode table while I am here.
- Add (experimental) BIOS POST call for vesa(4).  This function calls VGA
BIOS POST code from the current VGA option ROM.  Some video controllers
cannot save and restore the state properly even if it is claimed to be
supported.  Usually the symptom is blank display after resuming from suspend
state.  If the video mode does not match the previous mode after restoring,
we try BIOS POST and force the known good initial state.  Some magic was
taken from NetBSD (and it was taken from vbetool, I believe.)
- Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4)
to identify who owns the VESA BIOS.  This is very useful for multi-display
adapter setup.  By default, the POST video controller is automatically
probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding
vgapci unit number.  You may override it from loader but it is very unlikely
to be necessary.  Unfortunately only AGP/PCI/PCI-E controllers can be
matched because ISA controller does not have necessary device IDs.
- Fix a long standing bug in state save/restore function.  The state buffer
pointer should be ES:BX, not ES:DI according to VBE 3.0.  If it ever worked,
that's because BX was always zero. :-)
- Clean up register initializations more clearer per VBE 3.0.
- Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
Bjoern A. Zeeb
52bf2041ac Make sure that the primary native brandinfo always gets added
first and the native ia32 compat as middle (before other things).
o(ld)brandinfo as well as third party like linux, kfreebsd, etc.
stays on SI_ORDER_ANY coming last.

The reason for this is only to make sure that even in case we would
overflow the MAX_BRANDS sized array, the native FreeBSD brandinfo
would still be there and the system would be operational.

Reviewed by:	kib
MFC after:	1 month
2009-10-03 11:57:21 +00:00
Robert Watson
718dbcfeaa Regenerate system call files following r197636. 2009-09-30 08:48:59 +00:00
Robert Watson
72c35fc69c Reserve system call numbers for Capsicum security framework capabilities,
capability mode, and process descriptors: cap_new, cap_getrights, cap_enter,
cap_getmode, pdfork, pdkill, pdgetpid, and pdwait.

Obtained from:	TrustedBSD Project
Sponsored by:	Google
MFC after:	3 weeks
2009-09-30 08:46:01 +00:00
Xin LI
3d0cd00514 Use a 2 clause BSD-style license instead of stating the code as public
domain, as requested by core@ and reviewed by the author.
2009-09-28 08:14:15 +00:00
Jung-uk Kim
6aabed1c77 - Reduce BIOS memory mapping. We want 1MB of physical memory, not 12MB[1].
- Remove CS and IP registers from x86bios.h.  They have no use for us.
- Adjust register dump to make it little bit more useful for debugging.

Submitted by:	paradox (ddkprog yahoo com)[1] (initial version)
2009-09-25 17:56:32 +00:00
Jung-uk Kim
5ec510d8f4 Dump real mode registers under bootverbose to help debugging BIOS emulator. 2009-09-24 22:42:35 +00:00
Jung-uk Kim
a867274808 - Use FreeBSD function naming convention.
- Change x86biosCall() to more appropriate x86bios_intr().[1]

Discussed with:	delphij, paradox (ddkprog yahoo com)
Submitted by:	paradox (ddkprog yahoo com)[1]
2009-09-24 19:24:42 +00:00
Jung-uk Kim
19de5df5e5 Move sys/dev/x86bios to sys/compat/x86bios.
It may not be optimal but it is clearly better than the old place.

OK'ed by:	delphij, paradox (ddkprog yahoo com)
2009-09-23 20:49:14 +00:00
Marko Zec
ed539ef656 Lock the ifnet list while iterating over it.
Submitted by:	julian
MFC after:	3 days
2009-09-13 21:30:18 +00:00
Dag-Erling Smørgrav
80c03b8eee As jhb@ pointed out to me, r197057 was incorrect, not least because these
are generated files.
2009-09-10 13:20:27 +00:00
Dag-Erling Smørgrav
edefbdd7cb If a certain feature that was present in FreeBSD 7 was removed or changed in
FreeBSD 8, the compatibility shims should be built not just when FreeBSD 7
compatibility is requested, but also when compatibility with any older
FreeBSD version where that feature was present is requested.o

Without this patch, a kernel config that sets COMPAT_FREEBSD6 but not *7
would fail to build due to inconsistencies between the declaration of the
compatibility shims and their use in the SysV code.

There are similar errors in other *proto.h headers in the tree.

MFC after:	3 weeks
2009-09-10 08:33:28 +00:00
Konstantin Belousov
b55ef216fe kern_select(9) copies fd_set in and out of userspace in quantities of
longs. Since 32bit processes longs are 4 bytes, 64bit kernel may copy in
or out 4 bytes more then the process expected.

Calculate the amount of bytes to copy taking into account size of fd_set
for the current process ABI.

Diagnosed and tested by:	Peter Jeremy <peterjeremy acm org>
Reviewed by:	jhb
MFC after:	1 week
2009-09-09 20:59:01 +00:00
Bjoern A. Zeeb
ecc2fda872 Make sure FreeBSD binaries without .note.ABI-tag section work
correctly and do not match a colliding Debian GNU/kFreeBSD
brandinfo statements.
For this mark the Debian GNU/kFreeBSD brandinfo that it must have
an .note.ABI-tag section and ignore the old EI_OSABI brandinfo
when comparing a possibly colliding set of options.

Due to SYSINIT we add the brandinfo in a non-deterministic order,
so native FreeBSD is not always first. We may want to consider
to force native FreeBSD to come first as well.

The only way a problem could currently be noticed is when running an
i386 binary without the .note.ABI-tag on amd64 and the Debian GNU/kFreeBSD
brandinfo  was matched first,  as the fallback to ld-elf32.so.1 does
not exist in that case.

Reported and tested by:	ticso
In collaboration with:	kib
MFC after:		3 days
2009-08-30 14:38:17 +00:00
Marko Zec
a26f987f5d Fix a few panics in linuxulator + VIMAGE due to curvnet not being set.
This change affects only options VIMAGE builds.

Reviewed by:	julian
MFC after:	3 days
2009-08-28 22:51:07 +00:00
Bjoern A. Zeeb
89ffc202d6 Fix handling of .note.ABI-tag section for GNU systems [1].
Handle GNU/Linux according to LSB Core Specification 4.0,
Chapter 11. Object Format, 11.8. ABI note tag.

Also check the first word of desc, not only name, according to
glibc abi-tags specification to distinguish between Linux and
kFreeBSD.

Add explicit handling for Debian GNU/kFreeBSD, which runs
on our kernels as well [2].

In {amd64,i386}/trap.c, when checking osrel of the current process,
also check the ABI to not change the signal behaviour for Linux
binary processes, now that we save an osrel version for all three
from the lists above in struct proc [2].

These changes make it possible to run FreeBSD, Debian GNU/kFreeBSD
and Linux binaries on the same machine again for at least i386 and
amd64, and no longer break kFreeBSD which was detected as GNU(/Linux).

PR:		kern/135468
Submitted by:	dchagin [1] (initial patch)
Suggested by:	kib [2]
Tested by:	Petr Salinger (Petr.Salinger seznam.cz) for kFreeBSD
Reviewed by:	kib
MFC after:	3 days
2009-08-24 16:19:47 +00:00
Robert Watson
77dfcdc445 Rework global locks for interface list and index management, correcting
several critical bugs, including race conditions and lock order issues:

Replace the single rwlock, ifnet_lock, with two locks, an rwlock and an
sxlock.  Either can be held to stablize the lists and indexes, but both
are required to write.  This allows the list to be held stable in both
network interrupt contexts and sleepable user threads across sleeping
memory allocations or device driver interactions.  As before, writes to
the interface list must occur from sleepable contexts.

Reviewed by:	bz, julian
MFC after:	3 days
2009-08-23 20:40:19 +00:00
Robert Watson
530c006014 Merge the remainder of kern_vimage.c and vimage.h into vnet.c and
vnet.h, we now use jails (rather than vimages) as the abstraction
for virtualization management, and what remained was specific to
virtual network stacks.  Minor cleanups are done in the process,
and comments updated to reflect these changes.

Reviewed by:	bz
Approved by:	re (vimage blanket)
2009-08-01 19:26:27 +00:00
John Baldwin
8e3764c0a6 Fix the freebsd32 versions of semsys(), shmsys(), and msgsys() to use the
old ABI versions of the relevant control system call (e.g.
freebsd7_freebsd32_msgctl() instead of freebsd32_msgctl() for msgsys()).

Approved by:	re (kib)
2009-07-27 16:03:04 +00:00
Jamie Gritton
7cbf72137f Some jail parameters (in particular, "ip4" and "ip6" for IP address
restrictions) were found to be inadequately described by a boolean.
Define a new parameter type with three values (disable, new, inherit)
to handle these and future cases.

Approved by:	re (kib), bz (mentor)
Discussed with:	rwatson
2009-07-25 14:48:57 +00:00
Robert Watson
eddfbb763d Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator.  Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...).  This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.

Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack.  Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory.  Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.

Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy.  Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address.  When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.

This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.

Bump __FreeBSD_version and update UPDATING.

Portions submitted by:  bz
Reviewed by:            bz, zec
Discussed with:         gnn, jamie, jeff, jhb, julian, sam
Suggested by:           peter
Approved by:            re (kensmith)
2009-07-14 22:48:30 +00:00
Edward Tomasz Napierala
51334c8257 Regen the freebsd32 parts.
Approved by:	re (kib)
2009-07-08 16:30:34 +00:00
Edward Tomasz Napierala
92f76afe3a Fix freebsd32 version of lpathconf(2).
Approved by:	re (kib)
2009-07-08 16:26:43 +00:00
Edward Tomasz Napierala
c38898116a There is an optimization in chmod(1), that makes it not to call chmod(2)
if the new file mode is the same as it was before; however, this
optimization must be disabled for filesystems that support NFSv4 ACLs.
Chmod uses pathconf(2) to determine whether this is the case - however,
pathconf(2) always follows symbolic links, while the 'chmod -h' doesn't.

This change adds lpathconf(3) to make it possible to solve that problem
in a clean way.

Reviewed by:	rwatson (earlier version)
Approved by:	re (kib)
2009-07-08 15:23:18 +00:00
Robert Watson
14961ba789 Replace AUDIT_ARG() with variable argument macros with a set more more
specific macros for each audit argument type.  This makes it easier to
follow call-graphs, especially for automated analysis tools (such as
fxr).

In MFC, we should leave the existing AUDIT_ARG() macros as they may be
used by third-party kernel modules.

Suggested by:	brooks
Approved by:	re (kib)
Obtained from:	TrustedBSD Project
MFC after:	1 week
2009-06-27 13:58:44 +00:00
Weongyo Jeong
58f30773d8 provides a extra write buffer when the NDIS driver want to send a
request whose body has some datas through the default pipe.

Tested by:	Nikos Vassiliadis <nvass9573 at gmx.com>
2009-06-26 01:42:41 +00:00
John Baldwin
3899e0dfe7 Regen. 2009-06-24 21:54:08 +00:00
John Baldwin
b648d4806b Change the ABI of some of the structures used by the SYSV IPC API:
- The uid/cuid members of struct ipc_perm are now uid_t instead of unsigned
  short.
- The gid/cgid members of struct ipc_perm are now gid_t instead of unsigned
  short.
- The mode member of struct ipc_perm is now mode_t instead of unsigned short
  (this is merely a style bug).
- The rather dubious padding fields for ABI compat with SV/I386 have been
  removed from struct msqid_ds and struct semid_ds.
- The shm_segsz member of struct shmid_ds is now a size_t instead of an
  int.  This removes the need for the shm_bsegsz member in struct
  shmid_kernel and should allow for complete support of SYSV SHM regions
  >= 2GB.
- The shm_nattch member of struct shmid_ds is now an int instead of a
  short.
- The shm_internal member of struct shmid_ds is now gone.  The internal
  VM object pointer for SHM regions has been moved into struct
  shmid_kernel.
- The existing __semctl(), msgctl(), and shmctl() system call entries are
  now marked COMPAT7 and new versions of those system calls which support
  the new ABI are now present.
- The new system calls are assigned to the FBSD-1.1 version in libc.  The
  FBSD-1.0 symbols in libc now refer to the old COMPAT7 system calls.
- A simplistic framework for tagging system calls with compatibility
  symbol versions has been added to libc.  Version tags are added to
  system calls by adding an appropriate __sym_compat() entry to
  src/lib/libc/incldue/compat.h. [1]

PR:		kern/16195 kern/113218 bin/129855
Reviewed by:	arch@, rwatson
Discussed with:	kan, kib [1]
2009-06-24 21:10:52 +00:00
John Baldwin
3c366f1f14 Add a new COMPAT7 flag for FreeBSD 7.x compatibility system calls. 2009-06-24 13:36:37 +00:00
Bjoern A. Zeeb
5736e6fb9d After cleaning up rt_tables from vnet.h and cleaning up opt_route.h
a lot of files no longer need route.h either. Garbage collect them.
While here remove now unneeded vnet.h #includes as well.
2009-06-23 17:03:45 +00:00
Andrew Thompson
8f9e0ef947 Fix a typeo in the frame len function to unbreak the build, make it shorter
while I am here.
2009-06-23 06:00:31 +00:00
Andrew Thompson
ed6d949afd - Make struct usb_xfer opaque so that drivers can not access the internals
- Reduce the number of headers needed for a usb driver, the common case is just   usb.h and usbdi.h
2009-06-23 02:19:59 +00:00
John Baldwin
e47a833f38 Regen. 2009-06-22 20:24:03 +00:00
John Baldwin
0b0fe06a5e Fix a typo in a comment. 2009-06-22 20:12:40 +00:00
Brooks Davis
838d985825 Rework the credential code to support larger values of NGROUPS and
NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024
and 1023 respectively.  (Previously they were equal, but under a close
reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it
is the number of supplemental groups, not total number of groups.)

The bulk of the change consists of converting the struct ucred member
cr_groups from a static array to a pointer.  Do the equivalent in
kinfo_proc.

Introduce new interfaces crcopysafe() and crsetgroups() for duplicating
a process credential before modifying it and for setting group lists
respectively.  Both interfaces take care for the details of allocating
groups array. crsetgroups() takes care of truncating the group list
to the current maximum (NGROUPS) if necessary.  In the future,
crsetgroups() may be responsible for insuring invariants such as sorting
the supplemental groups to allow groupmember() to be implemented as a
binary search.

Because we can not change struct xucred without breaking application
ABIs, we leave it alone and introduce a new XU_NGROUPS value which is
always 16 and is to be used or NGRPS as appropriate for things such as
NFS which need to use no more than 16 groups.  When feasible, truncate
the group list rather than generating an error.

Minor changes:
  - Reduce the number of hand rolled versions of groupmember().
  - Do not assign to both cr_gid and cr_groups[0].
  - Modify ipfw to cache ucreds instead of part of their contents since
    they are immutable once referenced by more than one entity.

Submitted by:	Isilon Systems (initial implementation)
X-MFC after:	never
PR:		bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
John Baldwin
4b7b144f63 Regen. 2009-06-17 19:53:47 +00:00
John Baldwin
21def99b51 - Add the ability to mix multiple flags seperated by pipe ('|') characters
in the type field of system call tables.  Specifically, one can now use
  the 'NO*' types as flags in addition to the 'COMPAT*' types.  For example,
  to tag 'COMPAT*' system calls as living in a KLD via NOSTD.  The COMPAT*
  type is required to be listed first in this case.
- Add new functions 'type()' and 'flag()' to the embedded awk script in
  makesyscalls.sh that return true if a requested flag is found in the
  type field ($3).  The flag() function checks all of the flags in the
  field, but type() only checks the first flag.  type() is meant to be
  used in the top-level "switch" statement and flag() should be used
  otherwise.
- Retire the CPT_NOA type, it is now replaced with "COMPAT|NOARGS" using
  the flags approach.
- Tweak the comment descriptions of COMPAT[46] system calls so that they
  say "freebsd[46] foo" rather than "old foo".
- Document the COMPAT6 type.
- Sync comments in compat32 syscall table with the master table.
2009-06-17 19:50:38 +00:00
Bjoern A. Zeeb
ebd8672cc3 Add explicit includes for jail.h to the files that need them and
remove the "hidden" one from vimage.h.
2009-06-17 15:01:01 +00:00
John Baldwin
6653a58307 Regen. 2009-06-15 20:40:23 +00:00
John Baldwin
c4f16b69e1 Add a new 'void closefrom(int lowfd)' system call. When called, it closes
any open file descriptors >= 'lowfd'.  It is largely identical to the same
function on other operating systems such as Solaris, DFly, NetBSD, and
OpenBSD.  One difference from other *BSD is that this closefrom() does not
fail with any errors.  In practice, while the manpages for NetBSD and
OpenBSD claim that they return EINTR, they ignore internal errors from
close() and never return EINTR.  DFly does return EINTR, but for the common
use case (closing fd's prior to execve()), the caller really wants all
fd's closed and returning EINTR just forces callers to call closefrom() in
a loop until it stops failing.

Note that this implementation of closefrom(2) does not make any effort to
resolve userland races with open(2) in other threads.  As such, it is not
multithread safe.

Submitted by:	rwatson (initial version)
Reviewed by:	rwatson
MFC after:	2 weeks
2009-06-15 20:38:55 +00:00
Jamie Gritton
9ed47d01eb Get vnets from creds instead of threads where they're available, and from
passed threads instead of curthread.

Reviewed by:	zec, julian
Approved by:	bz (mentor)
2009-06-15 19:01:53 +00:00
Andrew Thompson
a593f6b8de s/usb2_/usb_|usbd_/ on all function names for the USB stack. 2009-06-15 01:02:43 +00:00
Dmitry Chagin
0046fd5dd9 Unlock process lock when return error from getrobustlist call.
Tested by:	Alexander Best <alexbestms at math uni-muenster de>
Approved by:	kib (mentor)
MFC after:	3 days
2009-06-14 17:53:55 +00:00
Jamie Gritton
7455b100af Add counterparts to getcredhostname:
getcreddomainname, getcredhostuuid, getcredhostid

Suggested by:	rmacklem
Approved by:	bz
2009-06-13 00:12:02 +00:00
Konstantin Belousov
859357f2b3 Regenerate 2009-06-10 13:48:43 +00:00
Konstantin Belousov
f68be132fe Add several syscall compat32 entries for extattr manipulation syscalls,
that do not require translation of the arguments.

Requested by:	kientzle
Reviewed by:	jhb (previous wrong version)
MFC after:	1 week
2009-06-10 13:48:13 +00:00
Bjoern A. Zeeb
8d8bc0182e After r193232 rt_tables in vnet.h are no longer indirectly dependent on
the ROUTETABLES kernel option thus there is no need to include opt_route.h
anymore in all consumers of vnet.h and no longer depend on it for module
builds.

Remove the hidden include in flowtable.h as well and leave the two
explicit #includes in ip_input.c and ip_output.c.
2009-06-08 19:57:35 +00:00
Andrew Thompson
ae60fdfba2 Rename usb pipes to endpoints as it better represents what they are, and struct
usb_pipe may be used for a different purpose later on.
2009-06-07 19:41:11 +00:00
Robert Watson
bcf11e8d00 Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC
and used in a large number of files, but also because an increasing number
of incorrect uses of MAC calls were sneaking in due to copy-and-paste of
MAC-aware code without the associated opt_mac.h include.

Discussed with:	pjd
2009-06-05 14:55:22 +00:00
Dmitry Chagin
f83427b833 Add forgotten in previous commit flags argument.
Approved by:	kib (mentor)
MFC after:	1 month
2009-06-01 20:54:41 +00:00
Dmitry Chagin
f8cd0af232 Implement accept4 syscall.
Approved by:	kib (mentor)
MFC after:	1 month
2009-06-01 20:48:39 +00:00
Dmitry Chagin
93e694c9df Implement a variation of the accept_common() which takes
a flags argument.

Do not preserve td_retval before kern_fcntl(F_SETFL) as it does not
changed.

Approved by:	kib (mentor)
MFC after:	1 month
2009-06-01 20:44:58 +00:00
Dmitry Chagin
c8f37d612d Split linux_accept() syscall onto linux_accept_common() which should
be used by linuxulator and linux_accept() itself.

Approved by:	kib (mentor)
MFC after:	1 month
2009-06-01 20:42:27 +00:00
Robert Watson
33dd50646e Regenerate generated syscall files following changes to struct sysent in
r193234.
2009-06-01 16:14:38 +00:00
Dmitry Chagin
39253cf9bb Implement a variation of the socketpair() syscall which takes a flags
in addition to the type argument.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-31 12:16:31 +00:00
Dmitry Chagin
38a18e9760 Move new socket flags handling into a separate function as Linux
introduced more syscalls which uses these flags.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-31 12:04:01 +00:00
Dmitry Chagin
20a4ff27b0 Remove empty lines.
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-31 12:00:16 +00:00
Xin LI
67feef6e5d Attempt to fix build by updating hostid to follow the new world order. 2009-05-30 07:33:32 +00:00
Jamie Gritton
76ca6f88da Place hostnames and similar information fully under the prison system.
The system hostname is now stored in prison0, and the global variable
"hostname" has been removed, as has the hostname_mtx mutex.  Jails may
have their own host information, or they may inherit it from the
parent/system.  The proper way to read the hostname is via
getcredhostname(), which will copy either the hostname associated with
the passed cred, or the system hostname if you pass NULL.  The system
hostname can still be accessed directly (and without locking) at
prison0.pr_host, but that should be avoided where possible.

The "similar information" referred to is domainname, hostid, and
hostuuid, which have also become prison parameters and had their
associated global variables removed.

Approved by:	bz (mentor)
2009-05-29 21:27:12 +00:00
Andrew Thompson
e0a69b51ac s/usb2_/usb_/ on all typedefs for the USB stack. 2009-05-29 18:46:57 +00:00
Xin LI
b6151caa3a Implement SI_ISALIST.
PR:		kern/91293
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
2009-05-29 06:27:30 +00:00
Xin LI
db4bab7fb9 Fix the sysinfo(SI_HW_SERIAL, emulation so that we actually get the
hostid of the machine rather than always getting "0".

PR:		kern/91293
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
2009-05-29 06:19:37 +00:00
Xin LI
818c7c128e copyinstr(9) takes parameter 'len' as a size_t *, not int *.
PR:		kern/91293
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
2009-05-29 06:04:26 +00:00
Xin LI
329f10dc21 de-register.
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
PR:		kern/91293
2009-05-29 05:58:46 +00:00
Xin LI
273bcf6d0c svr4_sys_getdents64() should not assume that the cookie would exist
everywhere.

PR:		kern/91293
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
2009-05-29 05:51:19 +00:00
Xin LI
531ad6344e Add new sysconfig bits, Fix the bogus numbering of the old bits.
Submitted by:	"Pedro f. Giffuni" <giffunip asme org>
Obtained from:	NetBSD
PR:		kern/91293
2009-05-29 05:37:27 +00:00
Xin LI
90db92dccd Use strlcpy(). 2009-05-28 21:12:43 +00:00
Andrew Thompson
760bc48e7e s/usb2_/usb_/ on all C structs for the USB stack. 2009-05-28 17:36:36 +00:00
Andriy Gapon
93f0eafde3 linux_ioctl_cdrom: reduce stack usage
... by moving two ~2KB structures from stack to heap allocation.
I experienced stack overflow in linux emulation on i386 (8K stack)
when LINUX_DVD_READ_STRUCT ioctl was performed on atapicam cd
device and there was an error that resulted in additional quite
heavy stack use in cam layer.

Reviewed by:	dchagin
Approved by:	jhb (mentor)
2009-05-27 15:23:12 +00:00
Jamie Gritton
0304c73163 Add hierarchical jails. A jail may further virtualize its environment
by creating a child jail, which is visible to that jail and to any
parent jails.  Child jails may be restricted more than their parents,
but never less.  Jail names reflect this hierarchy, being MIB-style
dot-separated strings.

Every thread now points to a jail, the default being prison0, which
contains information about the physical system.  Prison0's root
directory is the same as rootvnode; its hostname is the same as the
global hostname, and its securelevel replaces the global securelevel.
Note that the variable "securelevel" has actually gone away, which
should not cause any problems for code that properly uses
securelevel_gt() and securelevel_ge().

Some jail-related permissions that were kept in global variables and
set via sysctls are now per-jail settings.  The sysctls still exist for
backward compatibility, used only by the now-deprecated jail(2) system
call.

Approved by:	bz (mentor)
2009-05-27 14:11:23 +00:00
Antoine Brodin
ad0498a383 Remove an unused variable. 2009-05-24 18:35:53 +00:00
John Baldwin
31bd8c7dcf Comment nits. 2009-05-20 18:36:17 +00:00
John Baldwin
63ba66086a Put the vnode returned from namei() immediately after namei() returns in
svr4_sys_resolvepath().
2009-05-20 18:25:16 +00:00
Dmitry Chagin
ea7b81d2bd Validate user-supplied arguments values.
Args argument is a pointer to the structure located in user space in
which the socketcall arguments are packed. The structure must be
copied to the kernel instead of direct dereferencing.

Approved by:	kib (mentor)
MFC after:	1 week
2009-05-19 09:10:53 +00:00
Dmitry Chagin
3a72bf04c4 Implement MSG_CMSG_CLOEXEC flag for linux_recvmsg().
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-18 04:07:46 +00:00
Dmitry Chagin
3933bde22e Somewhere between 2.6.23 and 2.6.27, Linux added SOCK_CLOEXEC and
SOCK_NONBLOCK flags, that allow to save fcntl() calls.

Implement a variation of the socket() syscall which takes a flags
in addition to the type argument.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-16 18:48:41 +00:00
Dmitry Chagin
eeb63e515f Return EINVAL in case when the incorrect or unsupported
type argument is specified.

Do not map type argument value as its Linux values are
identical to FreeBSD values.

Approved by:	kib (mentor)
2009-05-16 18:46:51 +00:00
Dmitry Chagin
6994ea543f Use the protocol family constants for the domain argument validation.
Return immediately when the socket() failed.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-16 18:44:56 +00:00
Dmitry Chagin
d4dd69c46c Emulate SO_PEERCRED socket option.
Temporarily use 0 for pid member as the FreeBSD does not cache remote
UNIX domain socket peer pid.

PR:		kern/102956
Reviewed by:	rwatson
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-16 18:42:18 +00:00
Christian Brueffer
bf15937833 Remove an unused variable.
Found with:	Coverity Prevent(tm)
CID:		1167
2009-05-14 09:28:02 +00:00
Christian Brueffer
c3c1eab368 Fix memory leak in an error case.
Found with:	Coverity Prevent(tm)
CID:		371
MFC after:	2 weeks
2009-05-13 08:50:13 +00:00
Dmitry Chagin
03cc95d21a Translate l_timeval arg to native struct timeval in
linux_setsockopt()/linux_getsockopt() for SO_RCVTIMEO,
SO_SNDTIMEO opts as l_timeval has MD members.

Remove bogus __packed attribute from l_timeval struct on __amd64__.

PR:		kern/134276
Submitted by:	Thomas Mueller <tmueller sysgo com>
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-05-11 13:50:42 +00:00
Dmitry Chagin
3980a435a2 Add forgotten linux to bsd flags argument mapping into the linux_recv().
PR:		kern/134276
Submitted by:	Thomas Mueller <tmueller sysgo com>
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-05-11 13:42:40 +00:00
Dmitry Chagin
8d30f381ef Do not export AT_CLKTCK when emulating Linux kernel prior
to 2.4.0, as it has appeared in the 2.4.0-rc7 first time.
Being exported, AT_CLKTCK is returned by sysconf(_SC_CLK_TCK),
glibc falls back to the hard-coded CLK_TCK value when aux entry
is not present.

Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.

For older applications/libc's which depends on hard-coded CLK_TCK
value user should set compat.linux.osrelease less than 2.4.0.

Approved by:	kib (mentor)
2009-05-10 18:43:43 +00:00
Dmitry Chagin
580dd797fd Introduce linux_kernver() interface which is intended for an exact
designation of the emulated kernel version.

linux_kernver() returns integer value formatted as 'VVVMMMIII' where
VVV - version, MMM - major revision, III - minor revision.

Approved by:	kib (mentor)
2009-05-10 18:27:20 +00:00
Dmitry Chagin
1ca16454b3 Rework r189362, r191883.
The frequency of the statistics clock is given by stathz.
Use stathz if it is available, otherwise use hz.

Pointed out by:	bde

Approved by:	kib (mentor)
2009-05-10 18:16:07 +00:00
Ed Schouten
e5a34e5582 Regenerate system call tables to use SVN ids. 2009-05-08 20:16:04 +00:00
Ed Schouten
51e6ba0f00 Burn TTY ioctl bridges in compat layers.
I really don't want any pieces of code to include ioctl_compat.h, so let
the ibcs2 and svr4 compat leave sgtty alone. If they want to support
sgtty, they should emulate it on top of termios, not sgtty.

The code has been marked with BURN_BRIDGES for a long time. ibcs2 and
svr4 are not really popular pieces of code anyway.
2009-05-08 20:06:37 +00:00
Marko Zec
29b02909eb Introduce a new virtualization container, provisionally named vprocg, to hold
virtualized instances of hostname and domainname, as well as a new top-level
virtualization struct vimage, which holds pointers to struct vnet and struct
vprocg.  Struct vprocg is likely to become replaced in the near future with
a new jail management API import.

As a consequence of this change, change struct ucred to point to a struct
vimage, instead of directly pointing to a vnet.

Merge vnet / vimage / ucred refcounting infrastructure from p4 / vimage
branch.

Permit kldload / kldunload operations to be executed only from the default
vimage context.

This change should have no functional impact on nooptions VIMAGE kernel
builds.

Reviewed by:	bz
Approved by:	julian (mentor)
2009-05-08 14:11:06 +00:00
Jamie Gritton
e03d223bd4 Give vfs_getopt the type it's expecting.
Write 100 times: "32 bits is so twentieth century."

Noticed by:	dchagin
2009-05-07 19:46:29 +00:00
Jamie Gritton
7ae27ff49f Move the per-prison Linux MIB from a private one-off pointer to the new
OSD-based jail extensions.  This allows the Linux MIB to accessed via
jail_set and jail_get, and serves as a demonstration of adding jail support
to a module.

Reviewed by:	dchagin, kib
Approved by:	bz (mentor)
2009-05-07 18:36:47 +00:00
Dmitry Chagin
ca8c3e7bba Add KTR(9) tracing for futex emulation.
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-07 16:14:31 +00:00
Dmitry Chagin
c65b9bfa3c Linux exports HZ value to user space via AT_CLKTCK auxiliary vector entry,
which is available for Glibc as sysconf(_SC_CLK_TCK). If AT_CLKTCK entry is
not exported, Glibc uses 100.

linux_times() shall use the value that is exported to user space.

Pointyhat to:	dchagin

PR:		kern/134251
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-05-07 14:24:50 +00:00
Dmitry Chagin
4d706dcc08 Change linux struct tms definition to match actual linux one.
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-05-07 12:55:58 +00:00
Dmitry Chagin
4ec3ea90eb Add preliminary KTR(9) support to the linux emulation layer.
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-07 10:01:05 +00:00
Dmitry Chagin
13f20d7e86 To avoid excessive code duplication move MI definitions to the MI
header file. As it is defined in Linux.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-07 09:39:20 +00:00
Dmitry Chagin
d9b063cc9d Return EAFNOSUPPORT instead of EINVAL in case when the incorrect or
unsupported domain argument is specified.

Approved by:	kib (mentor)
2009-05-07 09:34:02 +00:00
Dmitry Chagin
1a52a4abf7 Rework r191742.
Use the protocol family constants for the domain argument validation.

Return EAFNOSUPPORT in case when the incorrect domain argument
is specified.

Return EPROTONOSUPPORT instead of passing values that are not 0
to the BSD layer.

Suggested by:   rwatson

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-07 03:23:22 +00:00
Jamie Gritton
84a8cad0f6 Mark Linux MIB sysctls MPSAFE.
Reviewed by:	dchagin, kib
Approved by:	bz (mentor)
2009-05-04 19:06:05 +00:00
Dmitry Chagin
40092d93b4 Linux socketpair() call expects explicit specified protocol for
AF_LOCAL domain unlike FreeBSD which expects 0 in this case.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-02 10:51:40 +00:00
Dmitry Chagin
d789bfd562 Move extern variable definitions to the header file.
Approved by:	kib (mentor)
MFC after:	1 month
2009-05-02 10:06:49 +00:00
Dmitry Chagin
79262bf1f0 Reimplement futexes.
Old implemention used Giant to protect the kernel data structures,
but at the same time called malloc(M_WAITOK), that could cause the
calling thread to sleep and lost Giant protection. User-visible
result was the missed wakeup.

New implementation uses one sx lock per futex. The sx protects
the futex structures and allows to sleep while copyin or copyout
are performed.

Unlike linux, we return EINVAL when FUTEX_CMP_REQUEUE operation
is requested and either caller specified futexes are equial or
second futex already exists. This is acceptable since the situation
can only occur from the application error, and glibc falls back to
old FUTEX_WAKE operation when FUTEX_CMP_REQUEUE returns an error.

Approved by:	kib (mentor)
MFC after:	1 month
2009-05-01 15:36:02 +00:00
Jamie Gritton
fe2f3c651f Regen for new jail system calls in r191673.
Approved by:	bz (mentor)
2009-04-29 21:50:13 +00:00
Jamie Gritton
b38ff370e4 Introduce the extensible jail framework, using the same "name=value"
interface as nmount(2).  Three new system calls are added:
* jail_set, to create jails and change the parameters of existing jails.
  This replaces jail(2).
* jail_get, to read the parameters of existing jails.  This replaces the
  security.jail.list sysctl.
* jail_remove to kill off a jail's processes and remove the jail.
Most jail parameters may now be changed after creation, and jails may be
set to exist without any attached processes.  The current jail(2) system
call still exists, though it is now a stub to jail_set(2).

Approved by:	bz (mentor)
2009-04-29 21:14:15 +00:00
Marko Zec
093f25f8c8 In preparation for turning on options VIMAGE in next commits,
rearrange / replace / adjust several INIT_VNET_* initializer
macros, all of which currently resolve to whitespace.

Reviewed by:	bz (an older version of the patch)
Approved by:	julian (mentor)
2009-04-26 22:06:42 +00:00
Dmitry Chagin
b1121623d2 Remove support for FUTEX_REQUEUE operation.
Glibc does not use this operation since 2.3.3 version (Jun 2004),
as it is racy and replaced by FUTEX_CMP_REQUEUE operation.
Glibc versions prior to 2.3.3 fall back to FUTEX_WAKE when
FUTEX_REQUEUE returned EINVAL.

Any application directly using FUTEX_REQUEUE without return
value checking are definitely broken.

Limit quantity of messages per process about unsupported
operation.

Approved by:	kib (mentor)
MFC after:	1 month
2009-04-19 13:48:42 +00:00
Andrew Thompson
4eae601ebd MFp4 //depot/projects/usb@159909
- make usb2_power_mask_t 16-bit
- remove "usb2_config_sub" structure from "usb2_config". To compensate for this
  "usb2_config" has a new field called "usb_mode" which select for which mode
  the current xfer entry is active. Options are: a) Device mode only b) Host
  mode only (default-by-zero) c) Both modes.  This change was scripted using
  the following sed script: "s/\.mh\././g".
- the standard packet size table in "usb_transfer.c" is now a function, hence
  the code for the function uses less memory than the table itself.

Submitted by:	Hans Petter Selasky
2009-04-05 18:20:38 +00:00
Dmitry Chagin
cd899aad76 Fix KBI breakage by r190520 which affects older linux.ko binaries:
1) Move the new field (brand_note) to the end of the Brandinfo structure.
2) Add a new flag BI_BRAND_NOTE that indicates that the brand_note pointer
   is valid.
3) Use the brand_note field if the flag BI_BRAND_NOTE is set and as old
   modules won't have the flag set, so the new field brand_note would be
   ignored.

Suggested by:	jhb
Reviewed by:	jhb
Approved by:	kib (mentor)
MFC after:	6 days
2009-04-05 09:27:19 +00:00
Konstantin Belousov
9da6804056 Regen 2009-04-01 13:12:40 +00:00
Konstantin Belousov
088b38ac84 Rename implementation function for freebsd32 sysarch(2) to allow for
the arguments translations. Provide ABI-compatible definition of the
struct i386_ldt_args for freebsd32 compat layer.

In collaboration with:	pho
Reviewed by:	jhb
2009-04-01 13:11:50 +00:00
Konstantin Belousov
0cdf4ffabc Add all segment registers for the amd64 CPU to struct reg and mcontext.
To keep these structures ABI-compatible, half the size of r_trapno,
r_err, mc_trapno, mc_flags.

Add fsbase and gsbase to mcontext on both amd64 and i386.
Add flags to amd64 mcontext to indicate that it contains valid segments
or bases.

In collaboration with:	pho
Discussed with:	peter
Reviewed by:	jhb
2009-04-01 12:44:17 +00:00
Ed Schouten
7eac36ed3c Emulate the FIODGNAME ioctl in our 32-bit emulator.
It's quite strange that nobody reported this issue before. It turns out
functions like ttyname(), ptsname() and fdevname() don't work in
compat32. This means it't not even possible to run applications like
script(1) inside a 32-bit FreeBSD jail.

Fix this by converting 32-bit fiodgname_arg structures to their 64-bit
equivalent.

Reported by:	kris
Tested by:	kris
2009-03-29 20:09:51 +00:00
Jamie Gritton
8571af59e5 Whitespace/spelling fixes in advance of upcoming functional changes.
Approved by:	bz (mentor)
2009-03-27 13:13:59 +00:00
Doug Ambrisko
d2b2128a28 Add stuff to support upcoming BMC/IPMI flashing of newer Dell machine
via the Linux tool.
     -  Add Linux shim to ipmi(4)
     -  Create a partitions file to linprocfs to make Linux fdisk see
        disks.  This file is dynamic so we can see disks come and go.
     -  Convert msdosfs to vfat in mtab since Linux uses that for
        msdosfs.
     -  In the Linux mount path convert vfat passed in to msdosfs
        so Linux mount works on FreeBSD.  Note that tasting works
        so that if da0 is a msdos file system
                /compat/linux/bin/mount /dev/da0 /mnt
        works.
     -  fix a 64it bug for l_off_t.
Grabing sh, mount, fdisk, df from Linux, creating a symlink of mtab to
/compat/linux/etc/mtab and then some careful unpacking of the Linux bmc
update tool and hacking makes it work on newer Dell boxes.  Note, probably
if you can't figure out how to do this, then you probably shouldn't be
doing it :-)
2009-03-26 17:14:22 +00:00
Weongyo Jeong
577b9fa3f8 Some NDIS USB drivers try to call URB funcs like URB_FUNCTION_VENDOR_xxx
or URB_FUNCTION_CLASS_xxx with HAL preemption lock that means it's
non-sleepable during USB requests though usb2_do_request() requires a
sleep so it needs to send queries to the default pipe without those
interfaces to avoid sleep.
2009-03-18 02:38:35 +00:00
Weongyo Jeong
08e06b60c1 If the caller sets irp_usriostat or irp_usrevent it try to process it
whatever the IRP flag is because some drivers (eg. RTL8187L NDIS driver)
call IoCompleteRequest() without setting flags.  It will prevent waiting
a event forever at attach.
2009-03-18 01:57:54 +00:00
Konstantin Belousov
3ff063577b Supply AT_EXECPATH auxinfo entry to the interpreter, both for native and
compat32 binaries.

Tested by:	pho
Reviewed by:	kan
2009-03-17 12:53:28 +00:00
Weongyo Jeong
8d3fb5e2bc grab NDIS USB lock instead of HAL preemption. This change should be
happened in the previous.
2009-03-17 05:57:43 +00:00
Weongyo Jeong
d3947a869c use usb2_desc_foreach() to iterate the USB config descriptor instread of
accessing structures directly to check some invalid descriptors.

Pointed by:	hps
2009-03-16 11:19:07 +00:00
Dmitry Chagin
731aded86d Sort include files in the alphabetical order.
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-03-16 05:39:37 +00:00
Dmitry Chagin
b41a7787e1 Ignore FUTEX_FD op, as it is done by linux.
Approved by:	kib (mentor)
MFC after:	2 weeks
2009-03-15 19:38:34 +00:00
Dmitry Chagin
3b8cbbded3 Include linux_futex.h before linux_emul.h
Approved by:	kib (mentor)
MFC after:	6 days
2009-03-15 19:16:12 +00:00
Dmitry Chagin
32c01de21c Implement new way of branding ELF binaries by looking to a
".note.ABI-tag" section.

The search order of a brand is changed, now first of all the
".note.ABI-tag" is looked through.

Move code which fetch osreldate for ELF binary to check_note() handler.

PR:		118473
Approved by:	kib (mentor)
2009-03-13 16:40:51 +00:00
Weongyo Jeong
2c964f43b6 o change a lock model based on HAL preemption lock to a normal mtx.
Based on the HAL preemption lock there is a problem on SMP machines
  and causes a panic.
o When a device detached the current tactic to detach NDIS USB driver is
  to call SURPRISE_REMOVED event.  So it don't need to call
  ndis_halt_nic() again.  This fixes some page faults when some drivers
  work abnormal.
o it assumes now that URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER is in
  DISPATCH_LEVEL (non-sleepable) and as further work
  URB_FUNCTION_VENDOR_XXX and URB_FUNCTION_CLASS_XXX should be.

Reviewed by:	Hans Petter Selasky <hselasky_at_freebsd.org>
Tested by:	Paul B. Mahol <onemda_at_gmail.com>
2009-03-12 02:51:55 +00:00
Weongyo Jeong
6affafd098 o port NDIS USB support from USB1 to the new usb(USB2).
o implement URB_FUNCTION_ABORT_PIPE handling.
o remove unused code related with canceling the timer list for USB
  drivers.
o whitespace cleanup and style(9)

Obtained from:	hps's original patch
2009-03-07 07:26:22 +00:00
John Baldwin
2ee8325f42 A better fix for handling different FPU initial control words for different
ABIs:
- Store the FPU initial control word in the pcb for each thread.
- When first using the FPU, load the initial control word after restoring
  the clean state if it is not the standard control word.
- Provide a correct control word for Linux/i386 binaries under
  FreeBSD/amd64.
- Adjust the control word returned for fpugetregs()/npxgetregs() when a
  thread hasn't used the FPU yet to reflect the real initial control
  word for the current ABI.
- The Linux/i386 ABI for FreeBSD/i386 now properly sets the right control
  word instead of trashing whatever the current state of the FPU is.

Reviewed by:	bde
2009-03-05 19:42:11 +00:00
Dmitry Chagin
4d7c2e8a48 Add AT_PLATFORM, AT_HWCAP and AT_CLKTCK auxiliary vector entries which
are used by glibc. This silents the message "2.4+ kernel w/o ELF notes?"
from some programs at start, among them are top and pkill.

Do the assignment of the vector entries in elf_linux_fixup()
as it is done in glibc.

Fix some minor style issues.

Submitted by:	Marcin Cieslak <saper at SYSTEM PL>
Approved by:	kib (mentor)
MFC after:	1 week
2009-03-04 12:14:33 +00:00
Jamie Gritton
f86bce5ed0 Extend the "vfsopt" mount options for more general use. Make struct
vfsopt and the vfs_buildopts function public, and add some new fields
to struct vfsopt (pos and seen), and new functions vfs_getopt_pos and
vfs_opterror.

Further extend the interface to allow reading options from the kernel
in addition to sending them to the kernel, with vfs_setopt and related
functions.

While this allows the "name=value" option interface to be used for more
than just FS mounts (planned use is for jails), it retains the current
"vfsopt" name and <sys/mount.h> requirement.

Approved by:	bz (mentor)
2009-03-02 23:26:30 +00:00
Bjoern A. Zeeb
33553d6e99 For all files including net/vnet.h directly include opt_route.h and
net/route.h.

Remove the hidden include of opt_route.h and net/route.h from net/vnet.h.

We need to make sure that both opt_route.h and net/route.h are included
before net/vnet.h because of the way MRT figures out the number of FIBs
from the kernel option. If we do not, we end up with the default number
of 1 when including net/vnet.h and array sizes are wrong.

This does not change the list of files which depend on opt_route.h
but we can identify them now more easily.
2009-02-27 14:12:05 +00:00
Roman Divacky
af83f5d77c Change the functions to ANSI in those cases where it breaks promotion
to int rule. See ISO C Standard: SS6.7.5.3:15.

Approved by:	kib (mentor)
Reviewed by:	warner
Tested by:	silence on -current
2009-02-24 18:09:31 +00:00
Andrew Thompson
3975e3a1ea Move usb to a graveyard location under sys/legacy/dev, it is intended that the
new USB2 stack will fully replace this for 8.0.

Remove kernel modules, a subsequent commit will update conf/files. Unhook
usbdevs from the build.
2009-02-23 18:16:17 +00:00
Ed Schouten
0eee862a54 Don't make Linux stat() open character devices to resolve its name.
The existing code calls kern_open() to resolve the vnode of a pathname
right after a stat(). This is not correct, because it causes random
character devices to be opened in /dev. This means ls'ing a tape
streamer will cause it to rewind, for example. Changes I have made:

- Add kern_statat_vnhook() to allow binary emulators to `post-process'
  struct stat, using the proper vnode.

- Remove unneeded printf's from stat() and statfs().

- Make the Linuxolator use kern_statat_vnhook(), replacing
  translate_path_major_minor_at().

- Let translate_fd_major_minor() use vp->v_rdev instead of
  vp->v_un.vu_cdev.

Result:

	crw-rw-rw- 1 root root   0, 14 Feb 20 13:54 /dev/ptmx
	crw--w---- 1 root adm  136,  0 Feb 20 14:03 /dev/pts/0
	crw--w---- 1 root adm  136,  1 Feb 20 14:02 /dev/pts/1
	crw--w---- 1 ed   tty  136,  2 Feb 20 14:03 /dev/pts/2

Before this commit, ptmx also had a major number of 136, because it
silently allocated and deallocated a pseudo-terminal. Device nodes that
cannot be opened now have proper major/minor-numbers.

Reviewed by:	kib, netchild, rdivacky (thanks!)
2009-02-20 13:05:29 +00:00
John Baldwin
ea77ff0a15 Use shared vnode locks when invoking VOP_READDIR().
MFC after:	1 month
2009-02-13 18:18:14 +00:00
John Baldwin
3d744ccdd2 Fix a bug in the previous change to the mtab handler: use the path returned
by vn_fullpath() when vn_fullpath() succeeds instead of when it fails.

Submitted by:	Artem Belevich  fbsdlist of src.cx
MFC after:	3 days
2009-02-13 15:32:03 +00:00
Alexander Leidinger
0134f12f7a Fix an edge-case of the linux readdir: We need the size of a linux dirent
structure, not the size of a pointer to it.

PR:		131099
Submitted by:	Andreas Kies <andikies@gmail.com>
MFC after:	2 weeks
2009-02-13 11:55:19 +00:00
David E. O'Brien
e6493bbebf Change some movl's to mov's. Newer GAS no longer accept 'movl' instructions
for moving between a segment register and a 32-bit memory location.

Looked at by:	jhb
2009-01-31 11:37:21 +00:00
Ed Schouten
a4611ab612 Last step of splitting up minor and unit numbers: remove minor().
Inside the kernel, the minor() function was responsible for obtaining
the device minor number of a character device. Because we made device
numbers dynamically allocated and independent of the unit number passed
to make_dev() a long time ago, it was actually a misnomer. If you really
want to obtain the device number, you should use dev2udev().

We already converted all the drivers to use dev2unit() to obtain the
device unit number, which is still used by a lot of drivers. I've
noticed not a single driver passes NULL to dev2unit(). Even if they
would, its behaviour would make little sense. This is why I've removed
the NULL check.

Ths commit removes minor(), minor2unit() and unit2minor() from the
kernel. Because there was a naming collision with uminor(), we can
rename umajor() and uminor() back to major() and minor(). This means
that the makedev(3) manual page also applies to kernel space code now.

I suspect umajor() and uminor() isn't used that often in external code,
but to make it easier for other parties to port their code, I've
increased __FreeBSD_version to 800062.
2009-01-28 17:57:16 +00:00
Jung-uk Kim
34fe89473f Replace couple of strcmp(cpu_vendor, "foo") with cpu_vendor_id for i386
and hide i386-specific code under #ifdef.
2009-01-22 17:06:33 +00:00
Ed Schouten
ddf9d24349 Push down Giant inside sysctl. Also add some more assertions to the code.
In the existing code we didn't really enforce that callers hold Giant
before calling userland_sysctl(), even though there is no guarantee it
is safe. Fix this by just placing Giant locks around the call to the oid
handler. This also means we only pick up Giant for a very short period
of time. Maybe we should add MPSAFE flags to sysctl or phase it out all
together.

I've also added SYSCTL_LOCK_ASSERT(). We have to make sure sysctl_root()
and name2oid() are called with the sysctl lock held.

Reviewed by:	Jille Timmermans <jille quis cx>
2008-12-29 12:58:45 +00:00
Konstantin Belousov
22a448c4d9 vm_map_lock_read() does not increment map->timestamp, so we should
compare map->timestamp with saved timestamp after map read lock is
reacquired, not with saved timestamp + 1. The only consequence of the +1
was unconditional lookup of the next map entry, though.

Tested by:	pho
Approved by:	des
MFC after:	2 weeks
2008-12-29 12:45:11 +00:00
Ganbold Tsagaankhuu
dff1491c74 Remove unused variable.
Found with:     Coverity Prevent(tm)
CID: 542

Approved by: weongyo
2008-12-28 13:50:58 +00:00
Weongyo Jeong
e3a7c990ff fix a bug to handling the argument that it passed `device_t' but it's
handled as `struct ndis_softc'.  It'll cause a panic when the driver is
detached.
2008-12-27 09:42:17 +00:00
Weongyo Jeong
b3974c00b5 Integrate the NDIS USB support code to CURRENT.
Now the NDISulator supports NDIS USB drivers that it've tested with
devices as follows:

  - Anygate XM-142 (Conexant)
  - Netgear WG111v2 (Realtek)
  - U-Khan UW-2054u (Marvell)
  - Shuttle XPC Accessory PN20 (Realtek)
  - ipTIME G054U2 (Ralink)
  - UNiCORN WL-54G (ZyDAS)
  - ZyXEL G-200v2 (ZyDAS)

All of them succeeded to attach and worked though there are still some
problems that it's expected to be solved.

To use NDIS USB support, you should rebuild and install ndiscvt(8) and
if you encounter a problem to attach please set `hw.ndisusb.halt' to
0 then retry.

I expect no changes of the NDIS code for PCI, PCMCIA devices.

Obtained from:  //depot/projects/ndisusb/...
2008-12-27 08:03:32 +00:00
Konstantin Belousov
6f3475454e Remove two remnant uses of AT_DEBUG. 2008-12-17 13:13:35 +00:00
Konstantin Belousov
c7462f4387 Reference the vmspace of the process being inspected by procfs, linprocfs
and sysctl kern_proc_vmmap handlers.

Reported and tested by:	pho
Reviewed by:	rwatson, des
MFC after:	1 week
2008-12-12 12:12:36 +00:00
Bjoern A. Zeeb
b2dbdae9f3 Add 32-bit compat support for AIO.
jhb probably forgot to commit this file with r185878 and will want to
review this. It unbreaks the build here.

Obtained from:	p4 //depot/user/jhb/lock/compat/freebsd32/freebsd32_signal.h#2
2008-12-11 00:58:05 +00:00
John Baldwin
5d8d23c71b Regen. 2008-12-10 20:57:16 +00:00
John Baldwin
3858a1f4f5 - Add 32-bit compat system calls for VFS_AIO. The system calls live in the
aio code and are registered via the recently added SYSCALL32_*() helpers.
- Since the aio code likes to invoke fuword and suword a lot down in the
  "bowels" of system calls, add a structure holding a set of operations for
  things like storing errors, copying in the aiocb structure, storing
  status, etc.  The 32-bit system calls use a separate operations vector to
  handle fuword32 vs fuword, etc.  Also, the oldsigevent handling is now
  done by having seperate operation vectors with different aiocb copyin
  routines.
- Split out kern_foo() functions for the various AIO system calls so the
  32-bit front ends can manage things like copying in and converting
  timespec structures, etc.
- For both the native and 32-bit aio_suspend() and lio_listio() calls,
  just use copyin() to read the array of aiocb pointers instead of using
  a for loop that iterated over fuword/fuword32.  The error handling in
  the old case was incomplete (lio_listio() just ignored any aiocb's that
  it got an EFAULT trying to read rather than reporting an error), and
  possibly slower.

MFC after:	1 month
2008-12-10 20:56:19 +00:00
Konstantin Belousov
c96f374195 Relock user map earlier, to have the lock held when break leaves the
loop earlier due to sbuf error.

Pointy hat to:	me
Submitted by:	dchagin
2008-12-10 16:11:09 +00:00
Konstantin Belousov
9499cb83bf Make two style changes to create new commit and document proper commit
message for r185765.

Noted by:	rdivacky
Requested by:	des

Commit message for r185765 should be:
In procfs map handler, and in linprocfs maps handler, do not call
vn_fullpath() while having vm map locked. This is done in anticipation
of the vop_vptocnp commit, that would make vn_fullpath sometime
acquire vnode lock.

Also, in linprocfs, maps handler already acquires vnode lock.

No objections from:	des
MFC after:	2 week
2008-12-08 13:15:31 +00:00
Konstantin Belousov
5a66e0259b Change the linprocfs <pid>/maps and procfs <pid>/map handlers to use
sbuf instead of doing uiomove. This allows for reads from non-zero
offsets to work.

Patch is forward-ported des@' one, and was adopted to current code
by dchagin@ and me.

Reviewed by:	des (linprocfs part)
PR:	kern/101453
MFC after:	1 week
2008-12-08 12:34:52 +00:00
John Baldwin
3cdf485f87 When unloading a 32-bit system call module, restore the sysent vector in
the 32-bit system call table instead of the main system call table.
2008-12-03 18:45:38 +00:00
Bjoern A. Zeeb
4b79449e2f Rather than using hidden includes (with cicular dependencies),
directly include only the header files needed. This reduces the
unneeded spamming of various headers into lots of files.

For now, this leaves us with very few modules including vnet.h
and thus needing to depend on opt_route.h.

Reviewed by:	brooks, gnn, des, zec, imp
Sponsored by:	The FreeBSD Foundation
2008-12-02 21:37:28 +00:00
Konstantin Belousov
74f5d68011 Make linux_sendmsg() and linux_recvmsg() work on linux32/amd64.
Change types used in the linux' struct msghdr and struct cmsghdr
definitions to the properly-sized architecture-specific types.
Move ancillary data handler from linux_sendit() to linux_sendmsg().

Submitted by:	dchagin
2008-11-29 17:14:06 +00:00
Bjoern A. Zeeb
759e7c0bbb Regen after jail support was added in r185435. 2008-11-29 14:34:30 +00:00
Bjoern A. Zeeb
413628a7e3 MFp4:
Bring in updated jail support from bz_jail branch.

This enhances the current jail implementation to permit multiple
addresses per jail. In addtion to IPv4, IPv6 is supported as well.
Due to updated checks it is even possible to have jails without
an IP address at all, which basically gives one a chroot with
restricted process view, no networking,..

SCTP support was updated and supports IPv6 in jails as well.

Cpuset support permits jails to be bound to specific processor
sets after creation.

Jails can have an unrestricted (no duplicate protection, etc.) name
in addition to the hostname. The jail name cannot be changed from
within a jail and is considered to be used for management purposes
or as audit-token in the future.

DDB 'show jails' command was added to aid debugging.

Proper compat support permits 32bit jail binaries to be used on 64bit
systems to manage jails. Also backward compatibility was preserved where
possible: for jail v1 syscalls, as well as with user space management
utilities.

Both jail as well as prison version were updated for the new features.
A gap was intentionally left as the intermediate versions had been
used by various patches floating around the last years.

Bump __FreeBSD_version for the afore mentioned and in kernel changes.

Special thanks to:
- Pawel Jakub Dawidek (pjd) for his multi-IPv4 patches
  and Olivier Houchard (cognet) for initial single-IPv6 patches.
- Jeff Roberson (jeff) and Randall Stewart (rrs) for their
  help, ideas and review on cpuset and SCTP support.
- Robert Watson (rwatson) for lots and lots of help, discussions,
  suggestions and review of most of the patch at various stages.
- John Baldwin (jhb) for his help.
- Simon L. Nielsen (simon) as early adopter testing changes
  on cluster machines as well as all the testers and people
  who provided feedback the last months on freebsd-jail and
  other channels.
- My employer, CK Software GmbH, for the support so I could work on this.

Reviewed by:	(see above)
MFC after:	3 months (this is just so that I get the mail)
X-MFC Before:   7.2-RELEASE if possible
2008-11-29 14:32:14 +00:00
Roman Divacky
7356a43c88 Document that all the other commands are either
identical to the FreeBSD ones or rejected by
kern_msgctl().

Found with:	Coverity Prevent(tm)
CID:	3456
Approved by:	kib (mentor)
2008-11-26 16:38:43 +00:00
Konstantin Belousov
b4cf0e62f4 Add sv_flags field to struct sysentvec with intention to provide description
of the ABI of the currently executing image. Change some places to test
the flags instead of explicit comparing with address of known sysentvec
structures to determine ABI features.

Discussed with:	dchagin, imp, jhb, peter
2008-11-22 12:36:15 +00:00
Konstantin Belousov
62162dfc94 In the robust futexes list head, futex_offset shall be signed,
and glibc actually supplies negative offsets. Change l_ulong to l_long.

Submitted by:	dchagin
2008-11-16 15:45:41 +00:00
Peter Wemm
dc5aaa8410 Sigh. Fix a pointer/int compile error. 2008-11-10 23:36:20 +00:00
Peter Wemm
a22600a1dd Fix a signal emulation bug introduced in r163018 (and present in 7.x).
This prevents 32 bit signal handlers from finding out what the faulting
address is.  Both the secret 4th argument and siginfo->si_addr are zero.
2008-11-10 23:26:52 +00:00
Ed Schouten
ebb45b0620 Regenerate system call tables for r184789. 2008-11-09 10:48:06 +00:00
Ed Schouten
a1b5a8955e Mark uname(), getdomainname() and setdomainname() with COMPAT_FREEBSD4.
Looking at our source code history, it seems the uname(),
getdomainname() and setdomainname() system calls got deprecated
somewhere after FreeBSD 1.1, but they have never been phased out
properly. Because we don't have a COMPAT_FREEBSD1, just use
COMPAT_FREEBSD4.

Also fix the Linuxolator to build without the setdomainname() routine by
just making it call userland_sysctl on kern.domainname. Also replace the
setdomainname()'s implementation to use this approach, because we're
duplicating code with sysctl_domainname().

I wasn't able to keep these three routines working in our
COMPAT_FREEBSD32, because that would require yet another keyword for
syscalls.master (COMPAT4+NOPROTO). Because this routine is probably
unused already, this won't be a problem in practice. If it turns out to
be a problem, we'll just restore this functionality.

Reviewed by:	rdivacky, kib
2008-11-09 10:45:13 +00:00
Dag-Erling Smørgrav
faecfd5641 utf-8
MFC after:	3 weeks
2008-11-05 15:08:09 +00:00
John Baldwin
b1b3a8653d Don't leak a reference on the /compat/linux vnode everytime
the linprocfs 'mtab' file is read.

MFC after:	1 month
2008-11-04 18:53:33 +00:00
Doug Rabson
45e6ab7f81 Regen. 2008-11-03 10:39:35 +00:00
Doug Rabson
a9148abd9d Implement support for RPCSEC_GSS authentication to both the NFS client
and server. This replaces the RPC implementation of the NFS client and
server with the newer RPC implementation originally developed
(actually ported from the userland sunrpc code) to support the NFS
Lock Manager.  I have tested this code extensively and I believe it is
stable and that performance is at least equal to the legacy RPC
implementation.

The NFS code currently contains support for both the new RPC
implementation and the older legacy implementation inherited from the
original NFS codebase. The default is to use the new implementation -
add the NFS_LEGACYRPC option to fall back to the old code. When I
merge this support back to RELENG_7, I will probably change this so
that users have to 'opt in' to get the new code.

To use RPCSEC_GSS on either client or server, you must build a kernel
which includes the KGSSAPI option and the crypto device. On the
userland side, you must build at least a new libc, mountd, mount_nfs
and gssd. You must install new versions of /etc/rc.d/gssd and
/etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf.

As long as gssd is running, you should be able to mount an NFS
filesystem from a server that requires RPCSEC_GSS authentication. The
mount itself can happen without any kerberos credentials but all
access to the filesystem will be denied unless the accessing user has
a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There
is currently no support for situations where the ticket file is in a
different place, such as when the user logged in via SSH and has
delegated credentials from that login. This restriction is also
present in Solaris and Linux. In theory, we could improve this in
future, possibly using Brooks Davis' implementation of variant
symlinks.

Supporting RPCSEC_GSS on a server is nearly as simple. You must create
service creds for the server in the form 'nfs/<fqdn>@<REALM>' and
install them in /etc/krb5.keytab. The standard heimdal utility ktutil
makes this fairly easy. After the service creds have been created, you
can add a '-sec=krb5' option to /etc/exports and restart both mountd
and nfsd.

The only other difference an administrator should notice is that nfsd
doesn't fork to create service threads any more. In normal operation,
there will be two nfsd processes, one in userland waiting for TCP
connections and one in the kernel handling requests. The latter
process will create as many kthreads as required - these should be
visible via 'top -H'. The code has some support for varying the number
of service threads according to load but initially at least, nfsd uses
a fixed number of threads according to the value supplied to its '-n'
option.

Sponsored by:	Isilon Systems
MFC after:	1 month
2008-11-03 10:38:00 +00:00
Konstantin Belousov
17b9edd35a The code in linux_proc_exit() contains a race when multiple linux based
processes exits at the same time.  The linux_emuldata structure is freed
but p->p_emuldata is left as a dangling pointer to the just freed memory.

The check for W_EXIT in the loop scanning the child processes isn't safe
since the state of the child process can change right afterwards. Lock
the process and check the W_EXIT before delivering signal.

Submitted by:	tegge
Reviewed by:	davidxu
MFC after:	1 week
2008-10-31 10:38:30 +00:00
Edward Tomasz Napierala
15bc6b2bd8 Introduce accmode_t. This is required for NFSv4 ACLs - it will be neccessary
to add more V* constants, and the variables changed by this patch were often
being assigned to mode_t variables, which is 16 bit.

Approved by:	rwatson (mentor)
2008-10-28 13:44:11 +00:00
Dag-Erling Smørgrav
1ede983cc9 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
John Baldwin
23aa8eeafc Regen for freebsd32_getdirentries(). 2008-10-22 21:56:44 +00:00
John Baldwin
63f8fe9e8b Split the copyout of *base at the end of getdirentries() out leaving the
rest in kern_getdirentries().  Use kern_getdirentries() to implement
freebsd32_getdirentries().  This fixes a bug where calls to getdirentries()
in 32-bit binaries would trash the 4 bytes after the 'long base' in
userland.

Submitted by:	ups
MFC after:	1 week
2008-10-22 21:55:48 +00:00
Konstantin Belousov
aa8b201112 Correctly fill siginfo for the signals delivered by linux tkill/tgkill.
It is required for async cancellation to work.

Fix PROC_LOCK leak in linux_tgkill when signal delivery attempt is made
to not linux process.

Do not call em_find(p, ...) with p unlocked.

Move common code for linux_tkill() and linux_tgkill() into
linux_do_tkill().

Change linux siginfo_t definition to match actual linux one. Extend
uid fields to 4 bytes from 2. The extension does not change structure
layout and is binary compatible with previous definition, because i386
is little endian, and each uid field has 2 byte padding after it.

Reported by:	Nicolas Joly <njoly pasteur fr>
Submitted by:	dchangin
MFC after:	1 month
2008-10-19 10:02:26 +00:00
Konstantin Belousov
175c6c319b Make robust futexes work on linux32/amd64. Use PTRIN to read
user-mode pointers. Change types used in the structures definitions to
properly-sized architecture-specific types.

Submitted by:	dchagin
MFC after:	1 week
2008-10-14 07:59:23 +00:00
Konstantin Belousov
68da8b22d2 Current linux_fooaffinity() emulation fails, as the FreeBSD affinity
syscalls expect the bitmap size in the range from 32 to 128. Old glibc
always assumed size 1024, while newer glibc searches for approriate
size, starting from 1024 and going up.

For now, use FreeBSD size of cpuset_t for bitmap size parameter and
return EINVAL if length of user space bitmap less than our size of
cpuset_t.

Submitted by:	dchagin
MFC after:	1 week
	[This requires MFC of the actual linux affinity syscalls]
2008-10-04 19:23:30 +00:00
Konstantin Belousov
9a1e630dfd Change the linprocfs <pid>/maps and procfs <pid>/map handlers to use
sbuf instead of doing uiomove. This allows for reads from non-zero
offsets to work.

Patch is forward-ported des@' one, and was adopted to current code
by dchagin@ and me.

Reviewed by:	des (linprocfs part)
PR:	kern/101453
MFC after:	1 week
2008-10-04 14:08:16 +00:00
Marko Zec
8b615593fc Step 1.5 of importing the network stack virtualization infrastructure
from the vimage project, as per plan established at devsummit 08/08:
http://wiki.freebsd.org/Image/Notes200808DevSummit

Introduce INIT_VNET_*() initializer macros, VNET_FOREACH() iterator
macros, and CURVNET_SET() context setting macros, all currently
resolving to NOPs.

Prepare for virtualization of selected SYSCTL objects by introducing a
family of SYSCTL_V_*() macros, currently resolving to their global
counterparts, i.e. SYSCTL_V_INT() == SYSCTL_INT().

Move selected #defines from sys/sys/vimage.h to newly introduced header
files specific to virtualized subsystems (sys/net/vnet.h,
sys/netinet/vinet.h etc.).

All the changes are verified to have zero functional impact at this
point in time by doing MD5 comparision between pre- and post-change
object files(*).

(*) netipsec/keysock.c did not validate depending on compile time options.

Implemented by:	julian, bz, brooks, zec
Reviewed by:	julian, bz, brooks, kris, rwatson, ...
Approved by:	julian (mentor)
Obtained from:	//depot/projects/vimage-commit2/...
X-MFC after:	never
Sponsored by:	NLnet Foundation, The FreeBSD Foundation
2008-10-02 15:37:58 +00:00
Olivier Houchard
3b30175391 Advertise bit 26 as sse2.
Spotted out by:	gahr
2008-09-26 15:29:18 +00:00
John Baldwin
88ac915a9b 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
John Baldwin
d47faadce3 Sort includes and add multiple include guards. 2008-09-25 20:12:38 +00:00
John Baldwin
74d9b5a551 Regen. 2008-09-25 20:08:36 +00:00
John Baldwin
48a43ae819 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
Konstantin Belousov
a8d403e102 Change the static struct sysentvec and struct Elf_Brandinfo initializers
to the C99 style. At least, it is easier to read sysent definitions
that way, and search for the actual instances of sigcode etc.

Explicitely initialize sysentvec.sv_maxssiz that was missed in most
sysvecs.

No objection from:	jhb
MFC after:	1 month
2008-09-24 10:14:37 +00:00
Edward Tomasz Napierala
9545354ed5 Fix usage of mac_vnode_check_open() in linuxulator - last argument
should be VREAD, not FREAD.

Approved by:	rwatson (mentor)
2008-09-22 18:59:24 +00:00
David E. O'Brien
c750e17cf5 Add freebsd32 compat shims for ioctl(2)
CDIOREADTOCHEADER and CDIOREADTOCENTRYS requests.
2008-09-22 16:24:36 +00:00
David E. O'Brien
663c58007e Regenerate for r183270. 2008-09-22 16:09:43 +00:00
David E. O'Brien
ae528485c4 Add freebsd32 compat shims for ioctl(2)
MDIOCATTACH, MDIOCDETACH, MDIOCQUERY, and MDIOCLIST requests.
2008-09-22 16:09:16 +00:00
David E. O'Brien
f1287854fd Regenerate for r183188. 2008-09-19 15:21:40 +00:00
David E. O'Brien
6e6049e9df Add freebsd32 compat shim for nmount(2).
(and quiet some compiler warnings for vfs_donmount)
2008-09-19 15:17:32 +00:00
David E. O'Brien
109ea24cc1 style(9) 2008-09-15 17:39:40 +00:00
David E. O'Brien
7e29bc757e Regenerate for r183042. 2008-09-15 17:39:01 +00:00
David E. O'Brien
f0f53d8f79 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
Ed Schouten
7969b32c44 Allow COMPAT_SVR4 to be built without COMPAT_43.
It seems we only depend on COMPAT_43 to implement the send() and recv()
routines. We can easily implement them using sendto() and recvfrom(),
just like we do inside our very own C library.

I wasn't able to really test it, apart from simple compilation testing.
I've heard rumours that COMPAT_SVR4 is broken inside execve() anyway.
It's still worth to fix this, because I suspect we'll get rid of
COMPAT_43 somewhere in the future...

Reviewed by:	rdivacky
Discussed with:	jhb
2008-09-15 15:09:35 +00:00
Andrew Thompson
8fa962c745 Allow PAGE_SHIFT to already be defined.
Submitted by:	Hans Petter Selasky
2008-09-13 17:34:18 +00:00
Roman Divacky
0d62170990 The ERESTART to EINTR conversion is already done in
kern_select so there is no need to repeat it in
linux_select().

Submitted by:	Dmitry Chagin <dchagin@>
MFC after:	1 week
Approved by:	kib (mentor)
2008-09-11 15:28:28 +00:00
Roman Divacky
2963584278 Getdents requires padding with 2 bytes instead of 1 byte
as with getdents64. The last byte is used for storing
the d_type, add this to plain getdents case where it was
missing before. Also change the code to use strlcpy instead
of plain strcpy. This changes fix the getdents crash we
had reports about (hl2 server etc.)

PR:		kern/117010
MFC after:	1 week
Submitted by:	Dmitry Chagin (dchagin@)
Tested by:	MITA Yoshio <mita ee.t.u-tokyo.ac jp>
Approved by:	kib (mentor)
2008-09-09 16:00:17 +00:00
Konstantin Belousov
745aaef5b5 Remove superfluous copyin() of args, structures are already in kernel space.
Submitted by:	dchagin
MFC after:	1 week
2008-09-09 13:01:14 +00:00
Attilio Rao
0359a12ead Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread
was always curthread and totally unuseful.

Tested by: Giovanni Trematerra <giovanni dot trematerra at gmail dot com>
2008-08-28 15:23:18 +00:00
Julian Elischer
576c43c844 We left out V_static_len from ip_fw2.c
(also a whitespace diff that i'd rahter fix her ethan break in the
vimage branch.)
2008-08-25 05:38:18 +00:00
Julian Elischer
1d89fc4ebe All opt_x.h includes go at the top of other includes. 2008-08-25 04:55:29 +00:00
Robert Watson
5ae504055a Regenerate following r182123. 2008-08-24 21:23:08 +00:00
Robert Watson
e484af13ed 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
David E. O'Brien
35c316caaf Add comments on NOARGS, NODEF, and NOPROTO. 2008-08-21 22:57:31 +00:00
Ed Schouten
18cf135421 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 Schouten
bc093719ca 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
Bjoern A. Zeeb
603724d3ab Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).

This is the first in a series of commits over the course
of the next few weeks.

Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.

We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.

Obtained from:	//depot/projects/vimage-commit2/...
Reviewed by:	brooks, des, ed, mav, julian,
		jamie, kris, rwatson, zec, ...
		(various people I forgot, different versions)
		md5 (with a bit of help)
Sponsored by:	NLnet Foundation, The FreeBSD Foundation
X-MFC after:	never
V_Commit_Message_Reviewed_By:	more people than the patch
2008-08-17 23:27:27 +00:00
Ed Schouten
b377be43a5 Add TIOCPKT and TIOCSPTLCK to the Linuxolator.
We're very lucky, because the flags used by our TIOCPKT implementation
are the same as flags used by Linux. We can safely enable TIOCPKT,
assuming EXTPROC is not used.

TIOCSPTLCK is used by unlockpt(). Because we don't need unlockpt() in
our implementation, make this ioctl a no-op.

Approved by:	philip (mentor, implicit), rdivacky
Obtained from:	P4 (//depot/projects/mpsafetty/...)
2008-07-23 17:47:44 +00:00
Roman Divacky
0864e2a4f1 Fix linux_alarm, the linux behaviour is to limit the
secs to INT_MAX when the passed in parameter is bigger
than INT_MAX.

Submitted by:	Dmitry Chagin <chagin.dmitry gmail com>
Approved by:	kib (mentor)
2008-07-23 17:19:02 +00:00
Weongyo Jeong
138ddff935 when NDIS framework try to query/set informations NDIS drivers can
return NDIS_STATUS_PENDING.  In this case, it's waiting for 5 secs to
get the response from drivers now.  However, some NDIS drivers can send
the response before NDIS framework gets ready to receive it so we might
always be blocked for 5 secs in current implementation.  NDIS framework
should reset the event before calling NDIS driver's callback not after.

MFC after:	1 month
2008-07-23 10:49:27 +00:00
Brooks Davis
e44f0b2a63 style(9): put parentheses around return values. 2008-07-10 19:54:34 +00:00
Brooks Davis
774b72e12e Regen 2008-07-10 17:46:58 +00:00
Brooks Davis
a8c6d6d0ba 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
Robert Watson
4f7d1876d5 Introduce a new lock, hostname_mtx, and use it to synchronize access
to global hostname and domainname variables.  Where necessary, copy
to or from a stack-local buffer before performing copyin() or
copyout().  A few uses, such as in cd9660 and daemon_saver, remain
under-synchronized and will require further updates.

Correct a bug in which a failed copyin() of domainname would leave
domainname potentially corrupted.

MFC after:	3 weeks
2008-07-05 13:10:10 +00:00
Coleman Kane
38ad9366dc Silence warning about missing IoGetDeviceObjectPointer by implementing
a simple stub that always returns STATUS_SUCCESS.

Submitted by:	Paul B. Mahol <onemda@gmail.com>
Reviewed by:	thompsa
MFC after:	1 week
2008-06-15 13:37:29 +00:00
Wojciech A. Koszek
53a609f064 Remove obselete PECOFF image activator support.
PRs assigned at the time of removal:    kern/80742

Discussed on:   freebsd-current (silence), IRC
Tested by:      make universe
Approved by:    cognet (mentor)
2008-06-14 12:51:44 +00:00
Weongyo Jeong
1f22fabdfb fix a page fault that it occurred during ifp is NULL. This bug happens
when NDIS driver's initialization is failed and NDIS driver's trying to
call NdisWriteErrorLogEntry().
2008-06-11 07:55:07 +00:00
Roman Divacky
2e1a489300 d_ino member of linux_dirent structure should be unsigned long.
Submitted by:	Chagin Dmitry <chagin.dmitry@gmail.com>
Approved by:	kib (mentor)
2008-06-08 11:09:25 +00:00
Roman Divacky
a47444d525 Switch to emulating Linux 2.6 on default.
Approved by:	kib (mentor)
2008-06-03 17:50:13 +00:00
Ed Schouten
a147e6cadf Push down the major/minor conversion for pts/%u to improve consistency.
In the mpsafetty branch, Linux sshd seems to work properly inside a
jail. Some small modifications had to be made to the Linux compatibility
layer.

The Linux PTY routines always expect the device major number to be 136
or higher. Our code always set the major/minor number pair to 136:0.
This makes routines like ttyname() and ptsname() fail, because we'll end
up having ambiguous device numbers.

The conversion was not performed on all *stat() routines, which meant in
some cases the numbers didn't get transformed. By pushing the conversion
into linux_driver_get_major_minor(), the transformation will take place
on all calls.

Approved by:	philip (mentor), rdivacky
2008-06-02 08:40:06 +00:00
Weongyo Jeong
32e9c9dc71 Fix a panic that a priority value which is passed to cv_broadcastpri(9)
can be < 0.  We don't ignore a `increment' argument but at least we keep
a priority value of NDIS threads over PRI_MIN_KERN.

Reviewed by:	thompsa
2008-05-30 06:31:55 +00:00
Weongyo Jeong
d9585f801b Fix a panic when it occurred during initializing the ndis driver because
it try to read network address through ifnet structure which is NULL
until the ndis driver's initialization is finished.

Reviewed by:	thompsa
2008-05-15 04:29:28 +00:00
Roman Divacky
4732e446fb Implement robust futexes. Most of the code is modelled after
what Linux does. This is because robust futexes are mostly
userspace thing which we cannot alter. Two syscalls maintain
pointer to userspace list and when process exits a routine
walks this list waking up processes sleeping on futexes
from that list.

Reviewed by:	kib (mentor)
MFC after:	1 month
2008-05-13 20:01:27 +00:00
Roman Divacky
a6d043e30d Implement linux_truncate64() syscall.
Tested by:	Aline de Freitas <aline@riseup.net>
Approved by:	kib (mentor)
2008-04-23 15:56:33 +00:00
Roman Divacky
cabce2bf19 The vmspace->vm_daddr is constant until freed, there is no need
to hold lock while accessing it.

Approved by:	kib (mentor)
2008-04-21 21:24:08 +00:00
Roman Divacky
872cbe6466 Remove using magic value of -1 to distinguish between linux_open()
and linux_openat(). Instead just pass AT_FDCWD into linux_common_open()
for the linux_open() case. This prevents passing -1 as a dirfd to
openat() from succeeding which is wrong.

Suggested by:	rwatson, kib
Approved by:	kib (mentor)
2008-04-09 16:42:50 +00:00
Konstantin Belousov
48b05c3f82 Implement the linux syscalls
openat, mkdirat, mknodat, fchownat, futimesat, fstatat, unlinkat,
    renameat, linkat, symlinkat, readlinkat, fchmodat, faccessat.

Submitted by:	rdivacky
Sponsored by:	Google Summer of Code 2007
Tested by:	pho
2008-04-08 09:45:49 +00:00
Konstantin Belousov
f2296b585e Regen 2008-03-31 12:12:27 +00:00
Konstantin Belousov
4f1e7213d4 Add the freebsd32 compatibility shims for the *at() syscalls.
Reviewed by:	rwatson, rdivacky
Tested by:	pho
2008-03-31 12:08:30 +00:00
Konstantin Belousov
57b4252e45 Add the support for the AT_FDCWD and fd-relative name lookups to the
namei(9).

Based on the submission by rdivacky,
	sponsored by Google Summer of Code 2007
Reviewed by:	rwatson, rdivacky
Tested by:	pho
2008-03-31 12:01:21 +00:00
John Birrell
8f0cc58815 Remove files that have been repo copied to their new location
in cddl-specific parts of the source tree.
2008-03-28 00:08:47 +00:00
Doug Rabson
a7ac0db6cb Regen. 2008-03-26 15:24:02 +00:00
Doug Rabson
dfdcada31e 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
John Baldwin
5c63b21a1a Regen. 2008-03-25 19:35:34 +00:00
John Baldwin
30c6422a8a 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
Ruslan Ermilov
d7a38db650 Fix build.
Reported by:	ache, tinderbox
2008-03-25 13:20:52 +00:00
Roman Divacky
6af821237d o Add stub support for some new futex operations,
so the annoying message is not printed.

	o	Don't warn about FUTEX_FD not being implemented
		and return ENOSYS instead of 0 (eg. success).

	o	Clear FUTEX_PRIVATE_FLAG as we actually implement
		only private futexes so there is no reason to
		return ENOSYS when app asks for a private futex.
		We don't reject shared futexes because they worked
		just fine with our implementation so far.

Approved by:	kib (mentor)
Tested by:	bsam
MFC after:	1 week
2008-03-20 17:03:55 +00:00
Antoine Brodin
afe5acff1b Simplify fcntl(SVR4_F_DUP2FD) code now that FreeBSD has F_DUP2FD.
Approved by:	rwatson (mentor)
2008-03-17 18:27:28 +00:00
Roman Divacky
5dfb688191 Implement sched_setaffinity and get_setaffinity using
real cpu affinity setting primitives.

Reviewed by:	jeff
Approved by:	kib (mentor)
2008-03-16 16:27:44 +00:00
Jeff Roberson
66257bc8d9 - The P_SA flag has been removed. Don't reference it in a KASSERT. 2008-03-12 22:17:06 +00:00
Jeff Roberson
6617724c5f 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
Konstantin Belousov
a0b0d286bc Return ENOSYS instead of 0 for the unknown futex operations.
Submitted by: rdivacky
Reported and tested by: Gary Stanley <gary velocity-servers net>
2008-03-02 14:00:50 +00:00
Konstantin Belousov
cbd2c621f8 Sanitize arguments to linux_mremap().
Check that only MREMAP_FIXED and MREMAP_MAYMOVE flags are specified.
Check for the page alignment of the addr argument.

Submitted by:	rdivacky
MFC after:	1 week
2008-02-22 11:47:56 +00:00
Ruslan Ermilov
b95bd24d29 Regenerate for readlink(2). 2008-02-12 20:11:54 +00:00
Ruslan Ermilov
5f56182b6f 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
Poul-Henning Kamp
cf827063a9 Give MEXTADD() another argument to make both void pointers to the
free function controlable, instead of passing the KVA of the buffer
storage as the first argument.

Fix all conventional users of the API to pass the KVA of the buffer
as the first argument, to make this a no-op commit.

Likely break the only non-convetional user of the API, after informing
the relevant committer.

Update the mbuf(9) manual page, which was already out of sync on
this point.

Bump __FreeBSD_version to 800016 as there is no way to tell how
many arguments a CPP macro needs any other way.

This paves the way for giving sendfile(9) a way to wait for the
passed storage to have been accessed before returning.

This does not affect the memory layout or size of mbufs.

Parental oversight by:	sam and rwatson.

No MFC is anticipated.
2008-02-01 19:36:27 +00:00
Pawel Jakub Dawidek
44ce1efd91 Change type of kmem_used() and kmem_size() functions to uint64_t, so it
doesn't overflow in arc.c in this check:

	if (kmem_used() > (kmem_size() * 4) / 5)
		return (1);

With this bug ZFS almost doesn't cache.

Only 32bit machines are affected that have vm.kmem_size set to values >=1GB.

Reported by:	David Taylor <davidt@yadt.co.uk>
2008-01-24 11:21:54 +00:00
Robert Watson
20c6fe828a Regenerate. 2008-01-20 23:44:24 +00:00
Robert Watson
6c902059f2 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
Attilio Rao
22db15c06f VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in
conjuction with 'thread' argument passing which is always curthread.
Remove the unuseful extra-argument and pass explicitly curthread to lower
layer functions, when necessary.

KPI results broken by this change, which should affect several ports, so
version bumping and manpage update will be further committed.

Tested by: kris, pho, Diego Sardina <siarodx at gmail dot com>
2008-01-13 14:44:15 +00:00
Attilio Rao
cb05b60a89 vn_lock() is currently only used with the 'curthread' passed as argument.
Remove this argument and pass curthread directly to underlying
VOP_LOCK1() VFS method. This modify makes the code cleaner and in
particular remove an annoying dependence helping next lockmgr() cleanup.
KPI results, obviously, changed.

Manpage and FreeBSD_version will be updated through further commits.

As a side note, would be valuable to say that next commits will address
a similar cleanup about VFS methods, in particular vop_lock1 and
vop_unlock.

Tested by:	Diego Sardina <siarodx at gmail dot com>,
		Andrea Di Pasquale <whyx dot it at gmail dot com>
2008-01-10 01:10:58 +00:00
John Baldwin
4ad6d200d6 Regen for shm_open(2) and shm_unlink(2). 2008-01-08 22:01:26 +00:00
John Baldwin
8e38aeff17 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
Konstantin Belousov
d075105da0 After applying LCONVPATH() to the path, do use the converted path
instead of original user-mode string in the linux_stat() and
linux_lstat() syscalls.

Tested by:	Peter Holm
MFC after:	3 days
2008-01-05 12:36:35 +00:00