Commit Graph

702 Commits

Author SHA1 Message Date
Jung-uk Kim
f69f4d8630 Correct an argument type of iopl syscall for Linuxulator. This also fixes
a warning from Clang, i. e., "args->level < 0 is always false".
2012-04-16 23:16:18 +00:00
Jung-uk Kim
13fa650c75 Regen for r234357. 2012-04-16 22:59:51 +00:00
Jung-uk Kim
db8eb180d9 Correct arguments of stat64, fstat64 and lstat64 syscalls for Linuxulator. 2012-04-16 22:58:28 +00:00
Jung-uk Kim
28cc85fd09 Regen for r234352. 2012-04-16 21:24:23 +00:00
Jung-uk Kim
d69a426fce - Implement pipe2 syscall for Linuxulator. This syscall appeared in 2.6.27
but GNU libc used it without checking its kernel version, e. g., Fedora 10.
- Move pipe(2) implementation for Linuxulator from MD files to MI file,
sys/compat/linux/linux_file.c.  There is no MD code for this syscall at all.
- Correct an argument type for pipe() from l_ulong * to l_int *.  Probably
this was the source of MI/MD confusion.

Reviewed by:	emulation
2012-04-16 21:22:02 +00:00
Alexander Leidinger
2676e6799d regen 2012-03-10 23:11:21 +00:00
Alexander Leidinger
048e874f54 - add comments to syscalls.master and linux(32)_dummy about which linux
kernel version introduced the sysctl (based upon a linux man-page)
- add comments to sscalls.master regarding some names of sysctls which are
  different than the linux-names (based upon the linux unistd.h)
- add some dummy sysctls
- name an unimplemented sysctl

MFC after:	1 month
2012-03-10 23:10:18 +00:00
Konstantin Belousov
aa10345311 Do not write to the user address directly, use suword().
Reported by:	Bengt Ahlgren <bengta sics se>
MFC after:	1 week
2012-02-25 01:33:39 +00:00
Konstantin Belousov
3494f31ad2 Fix misuse of the kernel map in miscellaneous image activators.
Vnode-backed mappings cannot be put into the kernel map, since it is a
system map.

Use exec_map for transient mappings, and remove the mappings with
kmem_free_wakeup() to notify the waiters on available map space.

Do not map the whole executable into KVA at all to copy it out into
usermode.  Directly use vn_rdwr() for the case of not page aligned
binary.

There is one place left where the potentially unbounded amount of data
is mapped into exec_map, namely, in the COFF image activator
enumeration of the needed shared libraries.

Reviewed by:   alc
MFC after:     2 weeks
2012-02-17 23:47:16 +00:00
Ulrich Spörlein
9a14aa017b Convert files to UTF-8 2012-01-15 13:23:18 +00:00
John Baldwin
4eda7b08af Regen. 2011-12-29 15:35:47 +00:00
John Baldwin
dd01579cde Implement linux_fadvise64() and linux_fadvise64_64() using
kern_posix_fadvise().

Reviewed by:	silence on emulation@
MFC after:	2 weeks
2011-12-29 15:34:59 +00:00
Lawrence Stewart
cf13a58510 - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate()
system calls to provide feed-forward clock management capabilities to
  userspace processes. ffclock_getcounter() returns the current value of the
  kernel's feed-forward clock counter. ffclock_getestimate() returns the current
  feed-forward clock parameter estimates and ffclock_setestimate() updates the
  feed-forward clock parameter estimates.

- Document the syscalls in the ffclock.2 man page.

- Regenerate the script-derived syscall related files.

Committed on behalf of Julien Ridoux and Darryl Veitch from the University of
Melbourne, Australia, as part of the FreeBSD Foundation funded "Feed-Forward
Clock Synchronization Algorithms" project.

For more information, see http://www.synclab.org/radclock/

Submitted by:	Julien Ridoux (jridoux at unimelb edu au)
2011-11-21 01:26:10 +00:00
Ed Schouten
3d402cb52e Regenerate system call tables. 2011-11-19 07:20:20 +00:00
Ed Schouten
767a32641c Make the Linux *at() calls a bit more complete.
Properly support:

- AT_EACCESS for faccessat(),
- AT_SYMLINK_FOLLOW for linkat().
2011-11-19 07:19:37 +00:00
Ed Schouten
51cfb9474f Regenerate system call tables. 2011-11-19 06:36:11 +00:00
Ed Schouten
d3a993d46b Improve *access*() parameter name consistency.
The current code mixes the use of `flags' and `mode'. This is a bit
confusing, since the faccessat() function as a `flag' parameter to store
the AT_ flag.

Make this less confusing by using the same name as used in the POSIX
specification -- `amode'.
2011-11-19 06:35:15 +00:00
Ryan Stone
493b584dbd Correct the types of the arguments to return probes of the syscall
provider.  Previously we were erroneously supplying the argument types of
the corresponding entry probe.

Reviewed by:	rpaulo
MFC after:	1 week
2011-11-11 03:49:42 +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
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
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
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
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
931f0826ea linux compat: add non-dummy capget and capset system calls, regenerate
And drop dummy definitions for those system calls.
This may transiently break the build.

PR:		kern/149168
Submitted by:	John Wehle <john@feith.com>
Reviewed by:	netchild
MFC after:	2 weeks
2011-03-26 10:59:24 +00:00
Andriy Gapon
1f4ec5a3ba linux compat: add non-dummy capget and capset system calls
PR:		kern/149168
Submitted by:	John Wehle <john@feith.com>
Reviewed by:	netchild
MFC after:	2 weeks
2011-03-26 10:51:56 +00:00
Dmitry Chagin
acface683e Export the correct AT_PLATFORM value.
Since signal trampolines are copied to the shared page do not need to
leave place on the stack for it. Forgotten in the previous commit.

MFC after:	1 Week
2011-03-26 09:25:35 +00:00
Dmitry Chagin
8f1e49a638 Enable shared page use for amd64/linux32 and i386/linux binaries.
Move signal trampoline code from the top of the stack to the shared page.

MFC after:	2 Weeks
2011-03-13 14:58:02 +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
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
Dmitry Chagin
09d6cb0a23 For realtime signals fill the sigval value. 2011-02-15 21:46:36 +00:00
Dmitry Chagin
fde6316272 Sort include files in the alphabetical order. 2011-02-13 19:07:48 +00:00
Dmitry Chagin
222198ab0b Move linux_clone(), linux_fork(), linux_vfork() to a MI path. 2011-02-12 18:17:12 +00:00
Dmitry Chagin
c8d6845e9e In preparation for moving linux_clone() to a MI path
introduce linux_set_upcall_kse().
2011-02-12 16:33:00 +00:00
Dmitry Chagin
2c7660ba3e In preparation for moving linux_clone () to a MI path
move the TLS code in a separate function.

Use function parameter instead of direct using register.
2011-02-12 15:50:21 +00:00
Dmitry Chagin
9bd9b52478 Regen for r218610. 2011-02-12 15:36:25 +00:00
Dmitry Chagin
f91ea2518b The fourth argument of linux_clone is a pointer to the TLS. Change clone syscall definition to match actual linux one. 2011-02-12 15:33:25 +00:00
Alan Cox
02e5228ca0 Setting VV_TEXT here is redundant. It is already set by do_execve().
Reviewed by:	kib
2011-02-09 18:45:33 +00:00
Dmitry Chagin
77192fddeb Regen for r218101.
MFC after:	1 Month.
2011-01-30 20:38:26 +00:00
Dmitry Chagin
8d73c2bfd1 Change linux futex syscall definition to match actual linux one.
MFC after:	1 Month.
2011-01-30 20:31:43 +00:00
Dmitry Chagin
9adaae9403 The kern_wait() code already removes the SIGCHLD signal for the waited
process. Removing other SIGCHLD signals is not needed and may cause
problems.

Pointed out by:	jilles

MFC after:	1 Month.
2011-01-30 18:17:38 +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
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
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
Alan Cox
a14a949872 The interpreter name should no longer be treated as a buffer that can be
overwritten.  (This change should have been included in r210545.)

Submitted by:	kib
2010-07-28 04:47:40 +00:00
Konstantin Belousov
13cedde2cb Regenerate 2010-06-28 18:17:21 +00:00
Alexander Kabaev
60743cbd22 Do not require pos parameter to be zero in MAP_ANONYMOUS mmap requests
in Linux emulation layer. Linux seems to only require that pos is
page-aligned, but otherwise ignores it. Default FreeBSD mmap parameter
checking is too strict to allow some Linux binaries to run. tsMuxeR is
one example of such a binary.

Discussed with:	jhb
MFC after:	1 week
2010-06-10 17:59:47 +00:00
Konstantin Belousov
6cf9a08d2c Introduce the x86 kernel interfaces to allow kernel code to use
FPU/SSE hardware. Caller should provide a save area that is chained
into the stack of the areas; pcb save_area for usermode FPU state is
on top. The pcb now contains a pointer to the current FPU saved area,
used during FPUDNA handling and context switches.  There is also a
facility to allow the kernel thread to use pcb save_area.

Change the dreaded warnings "npxdna in kernel mode!" into the panics
when FPU usage is not registered.

KPI discussed with:	fabient
Tested by:    pho, fabient
Hardware provided by:	Sentex Communications
MFC after:    1 month
2010-06-05 15:59:59 +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