Commit Graph

2054 Commits

Author SHA1 Message Date
Jung-uk Kim
c15cdbf2f3 Unroll inlined strnlen(9) and make it easier to read. No functional change. 2011-10-06 19:59:14 +00:00
Colin Percival
5da3eb94fc Fix a bug in UNIX socket handling in the linux emulator which was
exposed by the security fix in FreeBSD-SA-11:05.unix.

Approved by:	so (cperciva)
Approved by:	re (kib)
Security:	Related to FreeBSD-SA-11:05.unix, but not actually
		a security fix.
2011-10-04 19:07:38 +00:00
Kip Macy
9eca9361f9 Auto-generated code from sys_ prefixing makesyscalls.sh change
Approved by:	re(bz)
2011-09-16 14:04:14 +00:00
Kip Macy
8451d0dd78 In order to maximize the re-usability of kernel code in user space this
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel
entry points and all places in the code that use them. It also
fixes an additional name space collision between the kernel function
psignal and the libc function of the same name by renaming the kernel
psignal kern_psignal(). By introducing this change now we will ease future
MFCs that change syscalls.

Reviewed by:	rwatson
Approved by:	re (bz)
2011-09-16 13:58:51 +00:00
Jonathan Anderson
cfb5f76865 Add experimental support for process descriptors
A "process descriptor" file descriptor is used to manage processes
without using the PID namespace. This is required for Capsicum's
Capability Mode, where the PID namespace is unavailable.

New system calls pdfork(2) and pdkill(2) offer the functional equivalents
of fork(2) and kill(2). pdgetpid(2) allows querying the PID of the remote
process for debugging purposes. The currently-unimplemented pdwait(2) will,
in the future, allow querying rusage/exit status. In the interim, poll(2)
may be used to check (and wait for) process termination.

When a process is referenced by a process descriptor, it does not issue
SIGCHLD to the parent, making it suitable for use in libraries---a common
scenario when using library compartmentalisation from within large
applications (such as web browsers). Some observers may note a similarity
to Mach task ports; process descriptors provide a subset of this behaviour,
but in a UNIX style.

This feature is enabled by "options PROCDESC", but as with several other
Capsicum kernel features, is not enabled by default in GENERIC 9.0.

Reviewed by: jhb, kib
Approved by: re (kib), mentor (rwatson)
Sponsored by: Google Inc
2011-08-18 22:51:30 +00:00
Robert Watson
a9d2f8d84f Second-to-last commit implementing Capsicum capabilities in the FreeBSD
kernel for FreeBSD 9.0:

Add a new capability mask argument to fget(9) and friends, allowing system
call code to declare what capabilities are required when an integer file
descriptor is converted into an in-kernel struct file *.  With options
CAPABILITIES compiled into the kernel, this enforces capability
protection; without, this change is effectively a no-op.

Some cases require special handling, such as mmap(2), which must preserve
information about the maximum rights at the time of mapping in the memory
map so that they can later be enforced in mprotect(2) -- this is done by
narrowing the rights in the existing max_protection field used for similar
purposes with file permissions.

In namei(9), we assert that the code is not reached from within capability
mode, as we're not yet ready to enforce namespace capabilities there.
This will follow in a later commit.

Update two capability names: CAP_EVENT and CAP_KEVENT become
CAP_POST_KEVENT and CAP_POLL_KEVENT to more accurately indicate what they
represent.

Approved by:	re (bz)
Submitted by:	jonathan
Sponsored by:	Google Inc
2011-08-11 12:30:23 +00:00
Konstantin Belousov
dda4f96087 Implement the linprocfs swaps file, providing information about the
configured swap devices in the Linux-compatible format.

Based on the submission by:	Robert Millan <rmh debian org>
PR:	kern/159281
Reviewed by:	bde
Approved by:	re (kensmith)
MFC after:	2 weeks
2011-08-01 19:12:15 +00:00
Bjoern A. Zeeb
925af54487 Rename ki_ocomm to ki_tdname and OCOMMLEN to TDNAMLEN.
Provide backward compatibility defines under BURN_BRIDGES.

Suggested by:	jhb
Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
Approved by:	re (kib)
2011-07-18 20:06:15 +00:00
Dmitry Morozovsky
6edeb2c725 Correct small typo in a do{}while(0) define
Approved by:	kib
MFC after:	2 weeks
2011-07-17 17:12:17 +00:00
Bjoern A. Zeeb
74d7a2539e Remove the 'either' from the comment as it'll be less obvious that we
removed semmap in a bit of time from now.   Re-wrap.

Suggested by:	jhb
2011-07-17 05:33:22 +00:00
Jonathan Anderson
63ba8b5ede Auto-generated system call code with cap_new(), cap_getrights().
Approved by: mentor (rwatson), re (Capsicum blanket)
Sponsored by: Google Inc
2011-07-15 18:33:12 +00:00
Jonathan Anderson
cfb9df5541 Add cap_new() and cap_getrights() system calls.
Implement two previously-reserved Capsicum system calls:
- cap_new() creates a capability to wrap an existing file descriptor
- cap_getrights() queries the rights mask of a capability.

Approved by: mentor (rwatson), re (Capsicum blanket)
Sponsored by: Google Inc
2011-07-15 18:26:19 +00:00
Bjoern A. Zeeb
1080a2c85d Remove semaphore map entry count "semmap" field and its tuning
option that is highly recommended to be adjusted in too much
documentation while doing nothing in FreeBSD since r2729 (rev 1.1).

ipcs(1) needs to be recompiled as it is accessing _KERNEL private
variables.

Reviewed by:	jhb (before comment change on linux code)
Sponsored by:	Sandvine Incorporated
2011-07-14 14:18:14 +00:00
Sergey Kandaurov
e0607dec4d Return empty cmdline/environ string for processes with kernel address
space. This is consistent with the behavior in linux.

PR:		kern/157871
Reported by:	Petr Salinger <Petr Salinger att seznam cz>
Verified on:	GNU/kFreeBSD debian 8.2-1-amd64 (by reporter)
Reviewed by:	kib (some time ago)
MFC after:	2 weeks
2011-06-17 07:30:56 +00:00
Konstantin Belousov
160e5953c2 Regen. 2011-06-16 22:06:35 +00:00
Konstantin Belousov
7181217886 Implement compat32 for old lseek, for the a.out binaries on amd64. 2011-06-16 22:05:56 +00:00
Alexander Leidinger
f4cb7c85e6 Commit the missing linux_videdev2_compat.h (lost somewhere between
commit tree patch generation -> successful compile tree build test -> commmit).

Pointy hat to:	netchild
2011-05-04 13:09:20 +00:00
Alexander Leidinger
60c6d23685 Add FEATURE macros for v4l and v4l2 to the linuxulator.
Suggested by:	ae
2011-05-04 09:52:34 +00:00
Alexander Leidinger
15bf9014c9 This is v4l2 support for the linuxulator. This allows to access FreeBSD
native devices which support the v4l2 API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd
or multimedia/webcamd supplied drivers.

Submitted by:	nox
MFC after:	1 month
2011-05-04 09:05:39 +00:00
Alexander Leidinger
4c94038794 Fix typo in comment, improve comment. 2011-05-04 08:42:31 +00:00
Alexander Leidinger
d0f5ca6d40 Add explanation about the use-permission and FreeBSDify it. 2011-05-04 08:41:55 +00:00
Alexander Leidinger
41ebeb8e6f Copy the v4l2 header unchanged from the vendor branch. 2011-05-04 08:31:58 +00:00
Matthew D Fleming
7323776b01 Regen. 2011-04-18 16:32:47 +00:00
Matthew D Fleming
d91f88f7f3 Add the posix_fallocate(2) syscall. The default implementation in
vop_stdallocate() is filesystem agnostic and will run as slow as a
read/write loop in userspace; however, it serves to correctly
implement the functionality for filesystems that do not implement a
VOP_ALLOCATE.

Note that __FreeBSD_version was already bumped today to 900036 for any
ports which would like to use this function.

Also reserve space in the syscall table for posix_fadvise(2).

Reviewed by:	-arch (previous version)
2011-04-18 16:32:22 +00:00
Edward Tomasz Napierala
c21e81c87e Remove stray semicolon. 2011-04-10 10:15:49 +00:00
Jung-uk Kim
3453537fa5 Use atomic load & store for TSC frequency. It may be overkill for amd64 but
safer for i386 because it can be easily over 4 GHz now.  More worse, it can
be easily changed by user with 'machdep.tsc_freq' tunable (directly) or
cpufreq(4) (indirectly).  Note it is intentionally not used in performance
critical paths to avoid performance regression (but we should, in theory).
Alternatively, we may add "virtual TSC" with lower frequency if maximum
frequency overflows 32 bits (and ignore possible incoherency as we do now).
2011-04-07 23:28:28 +00:00
Edward Tomasz Napierala
1ba5ad4210 Add accounting for most of the memory-related resources.
Sponsored by:	The FreeBSD Foundation
Reviewed by:	kib (earlier version)
2011-04-05 20:23:59 +00:00
Konstantin Belousov
78272eedf0 Implement compat32 shims for PCIOCGETCONF.
There is a generic problem with the shims for ioctls that receive
pointers to the usermode data areas in the data argument. We either have
to modify the handler to accept UIO_USERSPACE/UIO_SYSSPACE indicator, or
allocate and fill a usermode memory for data buffer in the host format.
The change goes the second route, in particular because we do not need
to modify the handler.

Submitted by:	John Wehle <john feith com>
MFC after:	2 weeks
2011-04-02 16:02:25 +00:00
Konstantin Belousov
4ee107ddc9 Provide the structures and ioctl number definition for handling
PCIOCGETCONF compat32.

Submitted by:	John Wehle <john feith com>
MFC after:	2 weeks
2011-04-02 15:47:23 +00:00
Konstantin Belousov
c3b2c0520b Regen 2011-04-01 11:16:53 +00:00
Konstantin Belousov
7332c129e0 Add support for executing the FreeBSD 1/i386 a.out binaries on amd64.
In particular:
- implement compat shims for old stat(2) variants and ogetdirentries(2);
- implement delivery of signals with ancient stack frame layout and
  corresponding sigreturn(2);
- implement old getpagesize(2);
- provide a user-mode trampoline and LDT call gate for lcall $7,$0;
- port a.out image activator and connect it to the build as a module
  on amd64.

The changes are hidden under COMPAT_43.

MFC after:   1 month
2011-04-01 11:16:29 +00:00
Andriy Gapon
a930718af1 Revert r220032:linux compat: add SO_PASSCRED option with basic handling
I have not properly thought through the commit.  After r220031 (linux
compat: improve and fix sendmsg/recvmsg compatibility) the basic
handling for SO_PASSCRED is not sufficient as it breaks recvmsg
functionality for SCM_CREDS messages because now we would need to handle
sockcred data in addition to cmsgcred.  And that is not implemented yet.

Pointyhat to:	avg
2011-03-31 08:14:51 +00:00
Edward Tomasz Napierala
66db16fc49 Regenerate. 2011-03-30 17:59:54 +00:00
Edward Tomasz Napierala
ec125fbbc5 Add rctl. It's used by racct to take user-configurable actions based
on the set of rules it maintains and the current resource usage.  It also
privides userland API to manage that ruleset.

Sponsored by:	The FreeBSD Foundation
Reviewed by:	kib (earlier version)
2011-03-30 17:48:15 +00:00
Konstantin Belousov
eea5c61835 Regen. 2011-03-30 14:46:55 +00:00
Konstantin Belousov
8666550972 Provide compat32 shims for kldstat(2).
Requested and tested by:	jpaetzel
MFC after:	1 week
2011-03-30 14:46:12 +00:00
Andriy Gapon
01a9e1a11b linux compat: add SO_PASSCRED option with basic handling
This seems to have been a part of a bigger patch by dchagin that either
haven't been committed or committed partially.

Submitted by:	dchagin, nox
MFC after:	2 weeks
2011-03-26 11:25:36 +00:00
Andriy Gapon
605da56bc3 linux compat: improve and fix sendmsg/recvmsg compatibility
- implement baseic stubs for capget, capset, prctl PR_GET_KEEPCAPS
  and prctl PR_SET_KEEPCAPS.
- add SCM_CREDS support to sendmsg and recvmsg
- modify sendmsg to ignore control messages if not using UNIX
  domain sockets

This should allow linux pulse audio daemon and client work on FreeBSD
and interoperate with native counter-parts modulo the differences in
pulseaudio versions.

PR:		kern/149168
Submitted by:	John Wehle <john@feith.com>
Reviewed by:	netchild
MFC after:	2 weeks
2011-03-26 11:05:53 +00:00
Konstantin Belousov
bfac1583db Implement compat32 MEMRANGE_GET and MEMRANGE_SET. This is needed to
run 32bit Xorg server with VESA driver.

Submitted by:	John Wehle <john feith com>
MFC after:	1 week
2011-03-25 11:52:31 +00:00
Konstantin Belousov
bc13c742fa Fully emulate MDIOCLIST for compat32.
MFC after:	1 week
2011-03-25 11:43:49 +00:00
Konstantin Belousov
f991044ba4 Remove unneccessary panics, that can be easily triggered by user.
The copyin() function handles NULL as well as any other pointer.

MFC after:	3 days
2011-03-25 11:05:28 +00:00
Konstantin Belousov
1e67ebb1a2 Fix file leakage in the freebsd32_ioctl routines.
Code inspection shows freebsd32_ioctl calls fget for a fd and calls
a subroutine to handle each specific ioctl.  It is expected that the
subroutine will call fdrop when done.  However many of the subroutines
will exit out early if copyin encounters an error resulting in fdrop
never being called.

Submitted by:	John Wehle <john feith com>
MFC after:	3 days
2011-03-25 10:57:57 +00:00
John Baldwin
8e6fa660f2 Fix some locking nits with the p_state field of struct proc:
- Hold the proc lock while changing the state from PRS_NEW to PRS_NORMAL
  in fork to honor the locking requirements.  While here, expand the scope
  of the PROC_LOCK() on the new process (p2) to avoid some LORs.  Previously
  the code was locking the new child process (p2) after it had locked the
  parent process (p1).  However, when locking two processes, the safe order
  is to lock the child first, then the parent.
- Fix various places that were checking p_state against PRS_NEW without
  having the process locked to use PROC_LOCK().  Every place was already
  locking the process, just after the PRS_NEW check.
- Remove or reduce the use of PROC_SLOCK() for places that were checking
  p_state against PRS_NEW.  The PROC_LOCK() alone is sufficient for reading
  the current state.
- Reorder fill_kinfo_proc() slightly so it only acquires PROC_SLOCK() once.

MFC after:	1 week
2011-03-24 18:40:11 +00:00
Alexander Leidinger
0d7b5e545c Staticize functions which are not used somewhere else, move the
corresponding prototypes from the header to the code file.
2011-03-15 13:40:47 +00:00
Andriy Gapon
d549ef5638 add DTrace systrace support for linux32 and freebsd32 on amd64 syscalls
Regenerate system call and systrace support files.

PR:		kern/152822
Submitted by:	Artem Belevich <fbsdlist@src.cx>
Reviewed by:	jhb (earlier version)
MFC after:	3 weeks
2011-03-12 08:58:19 +00:00
Andriy Gapon
56ede1074e add DTrace systrace support for linux32 and freebsd32 on amd64 syscalls
This commits makes necessary changes in syscall/sysent generation
infrastructure.

PR:		kern/152822
Submitted by:	Artem Belevich <fbsdlist@src.cx>
Reviewed by:	jhb (ealier version)
MFC after:	3 weeks
2011-03-12 08:51:43 +00:00
Dmitry Chagin
31f7ad1545 Style(9) fixes. No functional changes.
MFC after:	2 Week
2011-03-12 07:47:05 +00:00
John Baldwin
c28a98e948 Remove now-obsolete comment.
Submitted by:	netchild
MFC after:	1 week
2011-03-10 19:50:12 +00:00
Jung-uk Kim
e09faf083f Remove custom interrupt dispatcher. This is a pointless micro-optimization
and it may cause problems if SS and SP are modified by real-mode code.

MFC after:	1 month
2011-03-09 16:16:38 +00:00
Dmitry Chagin
a2cd91cf28 Indeed, remove bogus since r219405 check of the Linux ABI.
Pointed out:	jhb

MFC after:	2 Week
2011-03-09 05:59:33 +00:00
Dmitry Chagin
e5d81ef1b5 Extend struct sysvec with new method sv_schedtail, which is used for an
explicit process at fork trampoline path instead of eventhadler(schedtail)
invocation for each child process.

Remove eventhandler(schedtail) code and change linux ABI to use newly added
sysvec method.

While here replace explicit comparing of module sysentvec structure with the
newly created process sysentvec to detect the linux ABI.

Discussed with:	kib

MFC after:	2 Week
2011-03-08 19:01:45 +00:00
Edward Tomasz Napierala
7123f4cd6f Export login class information via kinfo and make it possible to view
it using "ps -o class".
2011-03-05 14:41:49 +00:00
Edward Tomasz Napierala
e776709347 Regenerate. 2011-03-05 12:46:24 +00:00
Edward Tomasz Napierala
2bfc50bc4f Add two new system calls, setloginclass(2) and getloginclass(2). This makes
it possible for the kernel to track login class the process is assigned to,
which is required for RCTL.  This change also make setusercontext(3) call
setloginclass(2) and makes it possible to retrieve current login class using
id(1).

Reviewed by:	kib (as part of a larger patch)
2011-03-05 12:40:35 +00:00
Dmitry Chagin
3a4bc25691 Print out shared flag for debug purpose.
MFC after:	1 Week
2011-03-03 18:29:55 +00:00
Dmitry Chagin
815cb72a0c Switch PROCESS_SHARE to AUTO_SHARE (as umtx do). Even for SHARED,
if page mapped MAP_ANON linux uses private algorithm too.

Disscussed with:	jhb

MFC after:	3 Days
2011-03-03 18:19:10 +00:00
Robert Watson
ddfe0c2ba4 Regenerate system call files following addition of cap_enter(2),
cap_getmode(2), and capabilities.conf.

Reviewed by:	anderson
Discussed with:	benl, kris, pjd
Obtained from:	Capsicum Project
Sponsored by:	Google, Inc.
MFC after:	3 months
2011-03-01 13:30:23 +00:00
Robert Watson
96fcc75fdf Add initial support for Capsicum's Capability Mode to the FreeBSD kernel,
compiled conditionally on options CAPABILITIES:

Add a new credential flag, CRED_FLAG_CAPMODE, which indicates that a
subject (typically a process) is in capability mode.

Add two new system calls, cap_enter(2) and cap_getmode(2), which allow
setting and querying (but never clearing) the flag.

Export the capability mode flag via process information sysctls.

Sponsored by:	Google, Inc.
Reviewed by:	anderson
Discussed with:	benl, kris, pjd
Obtained from:	Capsicum Project
MFC after:	3 months
2011-03-01 13:23:37 +00:00
Rebecca Cran
23d5a8b50f Use the cprd_mem field when setting the start and length for a memory
resource - the layout of cprd_port is identical but using cprd_mem
makes the code easier to understand.

PR:		kern/118493
Submitted by:	Weongyo Jeong <weongyo.jeong at gmail.com>
MFC after:	3 days
2011-02-23 21:45:28 +00:00
John Baldwin
21f8f506fb Use umtx_key objects to uniquely identify futexes. Private futexes in
different processes that happen to use the same user address in the
separate processes will now be treated as distinct futexes rather than the
same futex.  We can now honor shared futexes properly by mapping them to a
PROCESS_SHARED umtx_key.  Private futexes use THREAD_SHARED umtx_key
objects.

In conjunction with:	dchagin
Reviewed by:	kib
MFC after:	1 week
2011-02-23 13:23:28 +00:00
Rebecca Cran
6bccea7c2b Fix typos - remove duplicate "the".
PR:	bin/154928
Submitted by:	Eitan Adler <lists at eitanadler.com>
MFC after: 	3 days
2011-02-21 09:01:34 +00:00
Dmitry Chagin
f9e66923e5 Do not clobber %rdx.
Before calling vfork() syscall the linux user-space stores the current PID
in the %rdx and restore it when the parent process will leave the kernel.
2011-02-20 07:58:30 +00:00
Dmitry Chagin
09d6cb0a23 For realtime signals fill the sigval value. 2011-02-15 21:46:36 +00:00
Dmitry Chagin
f3481dd9ab Make a linux_rt_sigtimedwait() system call is actually working.
1) Translate the native signal number in the appropriate Linux signal.
2) Remove bogus code, which can lead to a panic as it calls
   kern_sigtimedwait with same ksiginfo.
3) Return the corresponding signal number.
2011-02-15 21:42:48 +00:00
Dmitry Chagin
8c50c56206 Style(9) fix. Wrap long lines in linux_rt_sigtimedwait(). 2011-02-15 21:24:50 +00:00
Dmitry Chagin
d207e753da Put the macro declaration in the relevant include file for future use. 2011-02-15 21:22:09 +00:00
Dmitry Chagin
e2ef00a426 Style(9) fix. Do not initialize variables in the declarations. 2011-02-14 17:24:58 +00:00
Dmitry Chagin
49fa1a745e Sort include files in the alphabetical order. 2011-02-13 20:07:48 +00:00
Dmitry Chagin
4ca49f41ec Remove comment about 'ftlk' LOR. 2011-02-13 18:46:34 +00:00
Dmitry Chagin
890c582fe5 Stop printing the LOR, as this is expected behavior. 2011-02-13 18:41:40 +00:00
Dmitry Chagin
7c3b05b99c The bitset field of freshly created futex should be initialized explicity.
Otherwise, REQUEUE operations fails.
2011-02-13 17:56:22 +00:00
Dmitry Chagin
d14cc07d07 Rename used_requeue and use it as bitwise field to store more flags.
Reimplement used_requeue logic with LINUX_XDEPR_REQUEUEOP flag.
2011-02-12 20:58:59 +00:00
Dmitry Chagin
cfa57401b0 Slightly rewrite linux_fork:
1) Remove bogus error checking.
2) A new process exit from kernel through fork_trampoline(),
   so remove bogus check.
2011-02-12 20:16:25 +00:00
Dmitry Chagin
9588e04dde Remove bogus include <machine/frame.h> 2011-02-12 19:14:57 +00:00
Dmitry Chagin
222198ab0b Move linux_clone(), linux_fork(), linux_vfork() to a MI path. 2011-02-12 18:17:12 +00:00
Alexander Leidinger
529844c77c Linux' shm_open() fails because it wants to find some funky shmfs
to construct the full pathname. It starts to search at the default
mountpoint which is /dev/shm. If this fails it runs through fstab
and searches for shmfs and tmpfs. Whatever it finds will be
statfs()'ed to be checked for Linux' fs magic for shmfs (0x01021994).

Ideally our tmpfs should deliver this fs magic to Linux processes, but
as our tmpfs is considered to be an experimental feature we can not
assume that there is always a tmpfs available.

To make shared memory work in the Linuxulator, force the fs type of
/dev/shm (which can be a symlink) to match what Linux expects. The user
is responsible (info has to be added to the linux base ports and the docs)
to setup a suitable link for /dev/shm.

Noticed by:	Andre Albsmeier <Andre.Albsmeier@siemens.com>
Submitted by:	Andre Albsmeier <Andre.Albsmeier@siemens.com>
MFC after:	1 month
2011-02-09 20:23:22 +00:00
Dmitry Chagin
78ec1867a2 Yet another unimplemented futex operation, print out about.
Submitted by:	arundel
MFC after:	1 month.
2011-01-31 06:06:23 +00:00
Dmitry Chagin
5163762354 Implement a futex BITSET op.
Submitted by:	arundel
MFC after:	1 month.
2011-01-31 05:59:05 +00:00
Bjoern A. Zeeb
63827f255c Update interface stats counters to match the current format in linux and
try to export as much information as we can match.

Requested on:	Debian GNU/kFreeBSD list (debian-bsd lists.debian.org) 2010-12
Tested by:	Mats Erik Andersson (mats.andersson gisladisker.se)
MFC after:	10 days
2011-01-31 00:09:52 +00:00
Dmitry Chagin
596ba1bd95 Style(9) fixes.
MFC after:	1 Month.
2011-01-28 19:04:15 +00:00
Dmitry Chagin
adc7ece00a Implement a variation of the linux_common_wait() which should
be used by linuxolator itself.

Move linux_wait4() to MD path as it requires native struct
rusage translation to struct l_rusage on linux32/amd64.

MFC after:	1 Month.
2011-01-28 18:47:07 +00:00
Dmitry Chagin
d908c2d2a2 Style(9) fix.
MFC after:	1 month.
2011-01-28 05:42:14 +00:00
Dmitry Chagin
a5c1afadeb Add macro to test the sv_flags of any process. Change some places to test
the flags instead of explicit comparing with address of known sysentvec
structures.

MFC after:	1 month
2011-01-26 20:03:58 +00:00
Dmitry Chagin
9a6a64d3c4 Style(9) fix.
Approved by:	kib(mentor)
MFC after:	1 month
2011-01-23 09:50:39 +00:00
Konstantin Belousov
e225428f27 In linuxolator getdents_common(), it seems there is no reason to loop
if no records where returned by VOP_READDIR(). Readdir implementations
allowed to return 0 records when first record is larger then supplied
buffer. In this case trying to execute VOP_READDIR() again causes the
syscall looping forewer.

The goto was there from the day 1, which goes back to 1995 year.

Reported and tested by:	Beat G?tzi <beat chruetertee ch>
MFC after:   2 weeks
2011-01-19 12:19:25 +00:00
Matthew D Fleming
f4f04709ac Fix a few more SYSCTL_PROC() that were missing a CTLFLAG type specifier. 2011-01-19 00:57:58 +00:00
Konstantin Belousov
6297a3d843 Create shared (readonly) page. Each ABI may specify the use of page by
setting SV_SHP flag and providing pointer to the vm object and mapping
address. Provide simple allocator to carve space in the page, tailored
to put the code with alignment restrictions.

Enable shared page use for amd64, both native and 32bit FreeBSD
binaries.  Page is private mapped at the top of the user address
space, moving a start of the stack one page down. Move signal
trampoline code from the top of the stack to the shared page.

Reviewed by:	 alc
2011-01-08 16:13:44 +00:00
Sean Farley
506e9a3a87 Fix the LINUX_SOUND_MIXER_INFO ioctl to return success after the
information is set to FreeBSD.  It had been falling through to the end
of linux_ioctl_sound() and returning ENOIOCTL.  Noticed when running the
Linux ALSA amixer tool.

Add a LINUX_SOUND_MIXER_READ_CAPS ioctl which is used by the Skype
v2.1.0.81 binary.

Reviewed by:	gavin
MFC after:	2 weeks
2010-12-30 02:18:04 +00:00
Tijl Coosemans
81bd5041a2 Merge amd64 and i386 bus.h and move the resulting header to x86. Replace
the original amd64 and i386 headers with stubs.

Rename (AMD64|I386)_BUS_SPACE_* to X86_BUS_SPACE_* everywhere.

Reviewed by:	imp (previous version), jhb
Approved by:	kib (mentor)
2010-12-20 16:39:43 +00:00
Konstantin Belousov
da86244d0d Restore the ABI of struct kinfo_proc32 after r213536.
MFC after:	3 days
2010-12-19 21:18:33 +00:00
Bernhard Schmidt
5f5ca78b03 Implement NdisGetRoutineAddress and MmGetSystemRoutineAddress used in
newer Ralink drivers.

Submitted by:	Paul B Mahol <onemda at gmail.com>
2010-12-06 20:54:53 +00:00
Bernhard Schmidt
8b57b7eca6 Add a dummy for IoOpenDeviceRegistryKey().
With that change the Atheros 9xxx driver is actually usable and does not
panic anymore.

Submitted by:	Paul B Mahol <onemda at gmail.com>
MFC after:	2 weeks
2010-11-29 10:21:45 +00:00
Bernhard Schmidt
a94ca271e7 Some drivers rely on the existence of certain keys. The Atheros 9xxx
driver for example requests the NetCfgInstanceId but doesn't check the
returned status code and will happily access random memory instead.

Submitted by:	Paul B Mahol <onemda at gmail.com>
MFC after:	2 weeks
2010-11-29 10:10:56 +00:00
Bernhard Schmidt
7a9417182e Add prototype for InitializeSListHead(). 2010-11-23 22:17:06 +00:00
Bernhard Schmidt
191385fb0e Add a few functions used in newer drivers. Fix RtlCompareMemory() while
here.

Submitted by:	Paul B Mahol <onemda@gmail.com>
2010-11-23 21:49:32 +00:00
Sergey Kandaurov
f03749ca2d Update MNT_ROOTFS comments after changes in the root mount logic.
Reported by:	arundel
Suggested by:	marcel (phrasing)
Approved by:	kib (mentor)
2010-11-23 13:49:15 +00:00
Konstantin Belousov
f253bb0190 Add include guards.
MFC after:	3 days
2010-11-23 12:47:15 +00:00
Bernhard Schmidt
823fc080d7 Resurrect amd64 support.
- Many drivers on amd64 are picking system uptime, interrupt time and ticks
  via global data structure instead of calling functions for performance
  reasons. For now just patch such address so driver will not trigger page
  fault when trying to access such data. In future, additional callout may
  be added to update data in periodic intervals.
- On amd64 we need to allocate "shadow space" on stack before calling any
  function.

Submitted by:	Paul B Mahol <onemda at gmail.com>
2010-11-22 20:46:38 +00:00
Bernhard Schmidt
ea245594a6 Prefer pmap_extract() over pmap_kextract() as done in MmIsAddressValid().
According to the comment for MmIsAddressValid() there are issues on PAE
kernels using pmap_kextract().

Submitted by:	Paul B Mahol <onemda at gmail.com>
2010-11-22 20:39:29 +00:00
Dimitry Andric
95353459ae Fix linux kernel module breakage introduced in r215675, by including
<sys/sysent.h>.

Noticed by:	many
Pointy hat to:	netchild
2010-11-22 20:23:18 +00:00
Attilio Rao
7f08176ee8 Add the ability for GDB to printout the thread name along with other
thread specific informations.

In order to do that, and in order to avoid KBI breakage with existing
infrastructure the following semantic is implemented:
- For live programs, a new member to the PT_LWPINFO is added (pl_tdname)
- For cores, a new ELF note is added (NT_THRMISC) that can be used for
  storing thread specific, miscellaneous, informations. Right now it is
  just popluated with a thread name.

GDB, then, retrieves the correct informations from the corefile via the
BFD interface, as it groks the ELF notes and create appropriate
pseudo-sections.

Sponsored by:	Sandvine Incorporated
Tested by:	gianni
Discussed with:	dim, kan, kib
MFC after:	2 weeks
2010-11-22 14:42:13 +00:00
Alexander Leidinger
526384ecf2 Do not take the process lock. The assignment to u_short inside the
properly aligned structure is atomic on all supported architectures, and
the thread that should see side-effect of assignment is the same thread
that does assignment.

Use a more appropriate conditional to detect the linux ABI.

Suggested by:	kib
X-MFC:		together with r215664
2010-11-22 12:42:32 +00:00
Alexander Leidinger
5706ce8b58 Remove trailing dot from the unimplemented futex messages to make
them consistent with the syscall and ipc messages.

Submitted by:	arundel
MFC after:	3 days
2010-11-22 09:25:32 +00:00
Alexander Leidinger
bb63fdde6d By using the 32-bit Linux version of Sun's Java Development Kit 1.6
on FreeBSD (amd64), invocations of "javac" (or "java") eventually
end with the output of "Killed" and exit code 137.

This is caused by:
1. After calling exec() in multithreaded linux program threads are not
   destroyed and continue running. They get killed after program being
   executed finishes.

2. linux_exit_group doesn't return correct exit code when called not
   from group leader. Which happens regularly using sun jvm.

The submitters fix this in a similar way to how NetBSD handles this.

I took the PRs away from dchagin, who seems to be out of touch of
this since a while (no response from him).

The patches committed here are from [2], with some little modifications
from me to the style.

PR:		141439 [1], 144194 [2]
Submitted by:	Stefan Schmidt <stefan.schmidt@stadtbuch.de>, gk
Reviewed by:	rdivacky (in april 2010)
MFC after:	5 days
2010-11-22 09:06:59 +00:00
Bernhard Schmidt
511fa5ac98 Fix a panic on i386 for drivers using MmAllocateContiguousMemory()
and MmAllocateContiguousMemorySpecifyCache().

Those two functions take 64-bit variable(s) for their arguments. On i386
that takes additional 32-bit variable per argument. This is required so
that windrv_wrap() can correctly wrap function that miniport driver calls
with stdcall convention. Similar explanation is provided in subr_ndis.c for
other functions.

Submitted by:	 Paul B Mahol <onemda at gmail.com>
2010-11-17 09:32:39 +00:00
Bernhard Schmidt
4152177570 Use kmem_alloc_contig() to honour the cache_type variable.
Pointed out by:	alc
2010-11-17 09:28:17 +00:00
Dag-Erling Smørgrav
36b0a37317 Remove no-op assignment.
Submitted by:	clang via arundel@
MFC after:	2 weeks
2010-11-15 23:14:14 +00:00
Alexander Leidinger
809290db9e Some style(9) fixes.
Submitted by:	arundel
MFC after:	1 week
2010-11-15 13:07:10 +00:00
Alexander Leidinger
be44a97cd9 - print out the PID and program name of the program trying to use an
unsupported futex operation
- for those futex operations which are known to be not supported,
  print out which futex operation it is
- shortcut the error return of the unsupported FUTEX_CLOCK_REALTIME in
  some cases:
    FUTEX_CLOCK_REALTIME can be used to tell linux to use
    CLOCK_REALTIME instead of CLOCK_MONOTONIC. FUTEX_CLOCK_REALTIME
    however must only be set, if either FUTEX_WAIT_BITSET or
    FUTEX_WAIT_REQUEUE_PI are set too. If that's not the case
    we can die with ENOSYS right at the beginning.

Submitted by:	arundel
Reviewed by:	rdivacky (earlier iteration of the patch)
MFC after:	1 week
2010-11-15 13:03:35 +00:00
Bernhard Schmidt
1f0820e9c3 According to specs for MmAllocateContiguousMemorySpecifyCache() physically
contiguous memory with requested restrictions must be allocated.

Submitted by:	Paul B Mahol <onemda at gmail.com>
2010-11-11 18:43:31 +00:00
Dag-Erling Smørgrav
6ff168e663 Break long line. 2010-11-08 15:14:14 +00:00
Dag-Erling Smørgrav
199b5a28d6 Fix CPU ID in /proc/cpuinfo.
PR:		kern/56451
Submitted by:	arundel@
MFC after:	3 weeks
2010-11-08 12:04:41 +00:00
Bernhard Schmidt
4fa2655157 Remove 4.x, 5.x and 6.x compatibility bits.
Submitted by:	Paul B Mahol <onemda at gmail.com>
2010-11-04 18:43:57 +00:00
Konstantin Belousov
113801819a Remove stale comment.
Submitted by:	arundel
MFC after:	3 days
2010-10-14 19:30:44 +00:00
Konstantin Belousov
78ae4338a2 Add macro DECLARE_MODULE_TIED to denote a module as requiring the
kernel of exactly the same __FreeBSD_version as the headers module was
compiled against.

Mark our in-tree ABI emulators with DECLARE_MODULE_TIED. The modules
use kernel interfaces that the Release Engineering Team feel are not
stable enough to guarantee they will not change during the life cycle
of a STABLE branch. In particular, the layout of struct sysentvec is
declared to be not part of the STABLE KBI.

Discussed with:	bz, rwatson
Approved by:	re (bz, kensmith)
MFC after:	2 weeks
2010-10-12 09:18:17 +00:00
Jung-uk Kim
2a9479393a Simplify timeout check in futex_wait() using itimerfix() and return error
if the given timeout is invalid.  Consistently use int type for timeout and
correct a format string in futex_sleep().
2010-10-06 18:51:22 +00:00
Alexander Leidinger
5e82f12aca Fix a comparision of an uninitialised pointer.
Submitted by:	arundel
Found by:	clang analysis (automatic service by uqs@)
Reviewed by:	rdivacky
2010-10-06 07:34:41 +00:00
Andrew Thompson
c9558efd73 Use the printf-like capability from kproc_create().
Submitted by:	Paul B Mahol
2010-10-05 20:56:08 +00:00
Jung-uk Kim
e116381d02 Prefer pmap_unmapbios() over pmap_unmapdev(). The binary does not change
after this because pmap_unmapbios() is a macro for pmap_unmapdev() on amd64.
2010-10-05 18:38:23 +00:00
Konstantin Belousov
6c82a991c3 In linprocfs_doargv():
- handle compat32 processes;
- remove the checks for copied in addresses to belong into valid
  usermode range, proc_rwmem() does this;
- simplify loop reading single string, limit the total amount of strings
  collected by ARG_MAX bytes;
- correctly add '\0' at the end of each copied string;
- fix style.

In linprocfs_doprocenviron():
- unlock the process before calling copyin code [1]. The process is held
  by pseudofs.

In linprocfs_doproccmdline:
- use linprocfs_doargv() to handle !curproc case for which p_args is not cached.

Reported by:		plulnet [1]
Tested by:		pluknet
Approved by:		des (linprocfs maintainer, previous
				version of the patch)
MFC after:		3 weeks
2010-09-28 11:32:17 +00:00
Dag-Erling Smørgrav
6e7a4f6c36 Implement proc/$$/environment.
Submitted by:	Fernando Apesteguía <fernando.apesteguia@gmail.com>
MFC after:	3 weeks
2010-09-16 07:56:34 +00:00
Matthew D Fleming
4d369413e1 Replace sbuf_overflowed() with sbuf_error(), which returns any error
code associated with overflow or with the drain function.  While this
function is not expected to be used often, it produces more information
in the form of an errno that sbuf_overflowed() did.
2010-09-10 16:42:16 +00:00
Jung-uk Kim
97e6525d6a Add x86bios_set_intr() to set interrupt vectors for real mode and simplify
x86bios_get_intr() a little.
2010-08-25 21:03:50 +00:00
Jung-uk Kim
bc339276fb Check opcode for short jump as well. Some option ROMs do short jumps
(e.g., some NVIDIA video cards) and we were not able to do POST while
resuming because we only honored long jump.

MFC after:	3 days
2010-08-25 20:52:40 +00:00
Konstantin Belousov
ee235befcb Supply some useful information to the started image using ELF aux vectors.
In particular, provide pagesize and pagesizes array, the canary value
for SSP use, number of host CPUs and osreldate.

Tested by:	marius (sparc64)
MFC after:	1 month
2010-08-17 08:55:45 +00:00
Jung-uk Kim
077c4b480e Place spinlock_enter() and spinlock_exit() just around X86EMU calls. 2010-08-10 15:22:48 +00:00
Jung-uk Kim
449918b191 Tidy up locking and memory allocation for the real mode emulator wrapper.
Now we use a regular mutex instead of a spin mutex.  When we enter and exit
the emulator, spinlock_enter() and spinlock_exit() are additionally used.
Move some page table related stuff from x86bios_init() and x86bios_uninit()
to x86bios_map_mem() and x86bios_unmap_mem().
2010-08-10 06:25:08 +00:00
Jung-uk Kim
f2c73cefa0 Tidy up printf() calls for debugging. 2010-08-09 22:06:08 +00:00
Jung-uk Kim
b316507576 Initialize a variable just before its use. 2010-08-09 18:10:32 +00:00
Jung-uk Kim
b41f3f4cde Reduce diffs between VM86 and X86EMU wrappers for x86bios_alloc() and
x86bios_free().  Add strict sanity checks for VM86 wrapper and add strict
page table locking for X86EMU wrapper.
2010-08-09 17:54:26 +00:00
Konstantin Belousov
1757d9699d Prefer struct sysentvec sv_psstrings to hardcoding FREEBSD32_PS_STRINGS
in the compat32 code. Use sv_usrstack instead of FREEBSD32_USRSTACK as well.

MFC after:	1 week
2010-08-07 11:57:13 +00:00
Konstantin Belousov
4605ef76e7 Add compat32 definition for (old) struct ostat.
MFC after:	1 week
2010-08-07 11:53:38 +00:00
Jung-uk Kim
a6d613a57f Do not block any I/O port on amd64. 2010-08-07 04:05:58 +00:00
Jung-uk Kim
d7a5fb634f Optimize interrupt vector lookup. There is no need to check the page table. 2010-08-07 03:45:45 +00:00
Jung-uk Kim
fc82156f95 Consistently use architecture specific macros. 2010-08-06 15:24:37 +00:00
Jung-uk Kim
f10776734f Fix allocation of multiple pages, which forgot to increase page number.
Particularly, it caused "vm86_addpage: overlap" panics under VirtualBox.
Add a safety check before freeing memory while I am here.
2010-08-06 15:04:01 +00:00
Jung-uk Kim
0a3493e5e7 Re-add flag register for output. Some BIOS calls actually use it to return
success/failure status.  Oops.
2010-08-05 19:30:57 +00:00
Jung-uk Kim
c5e960de35 Do not copy stack pointer and flags. These registers are unconditionally
destroyed from vm86_prepcall().
2010-08-05 19:12:35 +00:00
Jung-uk Kim
439f3d8b81 Implement a simple native VM86 backend for X86BIOS. Now i386 uses native
VM86 calls instead of the real mode emulator as a backend.  VM86 has been
proven reliable for very long time and it is actually few times faster than
emulation.  Increase maximum number of page table entries per VM86 context
from 3 to 8 pages.  It was (ridiculously) low and insufficient for new VM86
backend, which shares one context globally.  Slighly rearrange and clean up
the emulator backend to accommodate new code.  The only visible change here
is stack size, which is decreased from 64K to 4K bytes to sync. with VM86.
Actually, it seems there is no need for big stack in real mode.

MFC after:	1 month
2010-08-05 18:48:30 +00:00
Konstantin Belousov
64dc04de68 Copy inode birthtime to the struct stat32.
MFC after:	1 week
2010-08-04 14:38:20 +00:00
Konstantin Belousov
45b6fa3b54 Fix style.
MFC after:	1 week
2010-08-04 14:35:05 +00:00
Konstantin Belousov
34ab36a3dc When compat32 recvmsg(2) does not need to copy out control messages, set
msg_controllen to 0.

PR:	kern/149227
Submitted by:	Stef Walter <stef memberwebs com>
MFC after:	1 weeks
2010-08-03 11:23:44 +00:00
Alan Cox
2af6e14d39 Introduce exec_alloc_args(). The objective being to encapsulate the
details of the string buffer allocation in one place.

Eliminate the portion of the string buffer that was dedicated to storing
the interpreter name.  The pointer to the interpreter name can simply be
made to point to the appropriate argument string.

Reviewed by:	kib
2010-07-27 17:31:03 +00:00
Konstantin Belousov
a9c9e80bec Revert r210451, and the similar part of the r210431. The forward-declaration
for the enum tag when enum definition is not complete is not allowed by
C99, and is gcc extension.

Requested by:	stefanf
MFC after:	28 days
2010-07-26 12:52:44 +00:00
Alan Cox
9e4e511499 Change the order in which the file name, arguments, environment, and
shell command are stored in exec*()'s demand-paged string buffer.  For
a "buildworld" on an 8GB amd64 multiprocessor, the new order reduces
the number of global TLB shootdowns by 31%.  It also eliminates about
330k page faults on the kernel address space.

Change exec_shell_imgact() to use "args->begin_argv" consistently as
the start of the argument and environment strings.  Previously, it
would sometimes use "args->buf", which is the start of the overall
buffer, but no longer the start of the argument and environment
strings.  While I'm here, eliminate unnecessary passing of "&length"
to copystr(), where we don't actually care about the length of the
copied string.

Clean up the initialization of the exec map.  In particular, use the
correct size for an entry, and express that size in the same way that
is used when an entry is allocated.  The old size was one page too
large.  (This discrepancy originated in 2004 when I rewrote
exec_map_first_page() to use sf_buf_alloc() instead of the exec map
for mapping the first page of the executable.)

Reviewed by:	kib
2010-07-25 17:43:38 +00:00
Konstantin Belousov
0b53d1569e Remove the linux_exec_copyin_args(), freebsd32_exec_copyin_args() may
server as well. COMPAT_FREEBSD32 is a prerequisite for COMPAT_LINUX32.

Reviewed by:	alc
MFC after:	3 weeks
2010-07-23 21:30:33 +00:00
Alan Cox
69a8f9e3d1 Eliminate a little bit of duplicated code. 2010-07-23 18:58:27 +00:00
Edward Tomasz Napierala
49e134dfa6 Remove proc locking, it's not needed after r210132. 2010-07-17 15:52:11 +00:00
Edward Tomasz Napierala
c5dfcf4cc1 Make svr4(4) version of poll(2) use the same limit of file descriptors as the
usual poll(2) does, instead of checking resource limits.
2010-07-15 18:44:58 +00:00
Konstantin Belousov
67322a4cd2 Constify source argument for siginfo_to_siginfo32().
MFC after:	1 week
2010-07-04 11:43:53 +00:00
John Baldwin
ad6eec7b9e Tweak the in-kernel API for sending signals to threads:
- Rename tdsignal() to tdsendsignal() and make it private to kern_sig.c.
- Add tdsignal() and tdksignal() routines that mirror psignal() and
  pksignal() except that they accept a thread as an argument instead of
  a process.  They send a signal to a specific thread rather than to an
  individual process.

Reviewed by:	kib
2010-06-29 20:41:52 +00:00
Konstantin Belousov
13cedde2cb Regenerate 2010-06-28 18:17:21 +00:00
Konstantin Belousov
153ac44cf6 Count number of threads that enter and leave dynamically registered
syscalls. On the dynamic syscall deregistration, wait until all
threads leave the syscall code. This somewhat increases the safety
of the loadable modules unloading.

Reviewed by:	jhb
Tested by:	pho
MFC after:	1 month
2010-06-28 18:06:46 +00:00
Jung-uk Kim
362487c0ba Let x86bios_alloc() pass contigmalloc(9) flags. Use it to set M_WAITOK
from VESA BIOS initialization.  All other malloc(9) uses in the function is
blocking any way.
2010-06-23 17:20:51 +00:00
Ed Schouten
6c9cdb5860 ANSIfy prototypes in subr_usbd.c.
Clang generates the following warnings when building subr_usbd.c:

| subr_usbd.c:598:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype
| subr_usbd.c:627:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype
| subr_usbd.c:649:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype

Instead of just ANSIfying these three prototypes, do it for the entire
file.

Spotted by:	clang
2010-06-12 12:19:08 +00:00
John Baldwin
3aa6d94e0c Update several places that iterate over CPUs to use CPU_FOREACH(). 2010-06-11 18:46:34 +00:00
Wojciech A. Koszek
eedfc35c5c Bring USB fixes for linux(4).
Intention of this commit is to let us take a full advantage
of libusb(8) ported to Linux. This decreases a possibility of getting
any collisions within ioctl() "command" space, especially with
relation to  LINUX_SNDCTL_SEQ... stuff.

Basically, we provide commands, that will be mapped in the kernel
to correct ones and forward those to the USB layer. Port enabling
functionality brought with this patch is here:

	http://www.freebsd.org/cgi/query-pr.cgi?pr=146895

Bump __FreeBSD_version to catch, since which version installing a
port makes sense.

This patch should bring no regressions. So far, only i386 is tested.

Tested by:	thompsa@
Reviewed by:	thompsa@
OKed by:	netchild@
2010-05-24 07:04:00 +00:00
Konstantin Belousov
afe1a68827 Reorganize syscall entry and leave handling.
Extend struct sysvec with three new elements:
sv_fetch_syscall_args - the method to fetch syscall arguments from
  usermode into struct syscall_args. The structure is machine-depended
  (this might be reconsidered after all architectures are converted).
sv_set_syscall_retval - the method to set a return value for usermode
  from the syscall. It is a generalization of
  cpu_set_syscall_retval(9) to allow ABIs to override the way to set a
  return value.
sv_syscallnames - the table of syscall names.

Use sv_set_syscall_retval in kern_sigsuspend() instead of hardcoding
the call to cpu_set_syscall_retval().

The new functions syscallenter(9) and syscallret(9) are provided that
use sv_*syscall* pointers and contain the common repeated code from
the syscall() implementations for the architecture-specific syscall
trap handlers.

Syscallenter() fetches arguments, calls syscall implementation from
ABI sysent table, and set up return frame. The end of syscall
bookkeeping is done by syscallret().

Take advantage of single place for MI syscall handling code and
implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and
PL_FLAG_EXEC. The SCE and SCX flags notify the debugger that the
thread is stopped at syscall entry or return point respectively.  The
EXEC flag augments SCX and notifies debugger that the process address
space was changed by one of exec(2)-family syscalls.

The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are
changed to use syscallenter()/syscallret(). MIPS and arm are not
converted and use the mostly unchanged syscall() implementation.

Reviewed by:	jhb, marcel, marius, nwhitehorn, stas
Tested by:	marcel (ia64), marius (sparc64), nwhitehorn (powerpc),
	stas (mips)
MFC after:	1 month
2010-05-23 18:32:02 +00:00
Alexander Leidinger
eddc400373 - #ifdef out the cliplist part, skype seems like using an uninitialized
variable and can cause problems, without the cliplist handling it works
  without problems
- improve the cliplist error handling
- fix VIDIOCGTUNER and VIDIOCSMICROCODE (still no hardware available to test)

Submitted by:	J.R. Oldroyd <jr@opal.com>
X-MFC after:	soon (together with all the v4l stuff)
2010-05-03 14:19:58 +00:00
Jung-uk Kim
483191871b Reduce MD code further. At least, it compiles on ia64 now (but it is not
connected to build).  The idea/code was shamelessly taken from r207329.
2010-05-01 01:05:07 +00:00
Jung-uk Kim
2083bca542 Do not initialize mutex and return error if it cannot map memory. 2010-05-01 00:36:40 +00:00
Konstantin Belousov
05e06d1157 Provide compat32 shims for kinfo_proc sysctl. This allows 32bit ps(1) to
mostly work on 64bit host.

The work is based on an original patch submitted by emaste, obtained
from Sandvine's source tree.

Reviewed by:	jhb
MFC after:	1 week
2010-04-21 19:32:00 +00:00
Konstantin Belousov
9847e91b0b Extract the code to copy-out struct rusage32 from struct rusage
into the new function.

Reviewed by:	jhb
MFC after:	1 week
2010-04-21 19:28:01 +00:00
Ed Maste
0a6b4947d8 Linux puts a blank line between each CPU. 2010-04-14 13:44:22 +00:00
Bjoern A. Zeeb
f0564d3739 Add a forward declaration to silence a warning when compiling ia32_genassym.c.
Reviewed by:	kib
MFC after:	3 days
2010-04-03 12:34:32 +00:00
Alexander Leidinger
fc825cc346 Re-apply r205683 with some modifications:
Fix some bogus values in linprocfs.

  Submitted by:	Petr Salinger <Petr.Salinger@seznam.cz>
  Verified on:	GNU/kFreeBSD debian 8.0-1-686 (by submitter)
  PR:		144584

Reviewed by / discussed with:	kib, des, jhb, submitter
2010-04-02 06:50:28 +00:00
Ed Schouten
510ea843ba Rename st_*timespec fields to st_*tim for POSIX 2008 compliance.
A nice thing about POSIX 2008 is that it finally standardizes a way to
obtain file access/modification/change times in sub-second precision,
namely using struct timespec, which we already have for a very long
time. Unfortunately POSIX uses different names.

This commit adds compatibility macros, so existing code should still
build properly. Also change all source code in the kernel to work
without any of the compatibility macros. This makes it all a less
ambiguous.

I am also renaming st_birthtime to st_birthtim, even though it was a
local extension anyway. It seems Cygwin also has a st_birthtim.
2010-03-28 13:13:22 +00:00
Alexander Leidinger
2e2d757e51 Revert r205683 to resolve some code quality issues which do not affect the
build or use of linprocfs, before committing the reworked patch again.

Requested by:	des
2010-03-26 14:36:16 +00:00
Alexander Leidinger
6cdf931c46 Fix some bogus values in linprocfs.
Submitted by:	Petr Salinger <Petr.Salinger@seznam.cz>
Verified on:	GNU/kFreeBSD debian 8.0-1-686 (by submitter)
PR:		144584
2010-03-26 11:43:15 +00:00
Alexander Leidinger
90782c0a14 Fix some problems which may lead to a panic:
- right order of src and dst in memcpy
 - NULL out the clips after freeing to prevent an accident

Noticed by:	hselasky
2010-03-26 08:42:11 +00:00
Jung-uk Kim
bfd026445f Revert accidentally committed initial real mode %sp change of r205347.
Note I am keeping %ds change because X.org int10 handler does it and
it seems reasonable.
2010-03-25 17:14:47 +00:00
Jung-uk Kim
d7312c88b4 Optimize real mode page table lookup. 2010-03-25 17:03:52 +00:00
Jung-uk Kim
ad51361a2c Fix stupid typos. Some VESA BIOSes directly call BIOS interrupt handlers
within the VBE interrupt handler.  Unfortunately it was causing real mode
page faults because we were fetching instructions from bogus addresses.
Pass me the pointyhat, please.

PR:		kern/144654
MFC after:	3 days
2010-03-25 15:56:04 +00:00
Nathan Whitehorn
a107d8aac9 Change the arguments of exec_setregs() so that it receives a pointer
to the image_params struct instead of several members of that struct
individually. This makes it easier to expand its arguments in the future
without touching all platforms.

Reviewed by:	jhb
2010-03-25 14:24:00 +00:00
John Baldwin
acfaf56efe Add missing Giant locking for the vfsconf list.
Submitted by:	kib
2010-03-24 14:20:37 +00:00
John Baldwin
663072c6d1 Implement /proc/filesystems.
Submitted by:	Fernando Apesteguia fernando.apesteguia (gmail)
2010-03-23 21:49:33 +00:00
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