Commit Graph

1878 Commits

Author SHA1 Message Date
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