Commit Graph

84 Commits

Author SHA1 Message Date
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
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
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
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
Robert Watson
08e6d9fad8 Continue to introduce Capsicum Capability Mode support:
Add a new system call flag, SYF_CAPENABLED, which indicates that a
particular system call is available in capability mode.

Add a new configuration file, kern/capabilities.conf (similar files
may be introduced for other ABIs in the future), which enumerates
system calls that are available in capability mode.  When a new
system call is added to syscalls.master, it will also need to be
added here (if needed).  Teach sysent parts to use this file to set
values for SYF_CAPENABLED for the native ABI.

Reviewed by:	anderson
Discussed with:	benl, kris, pjd
Obtained from:	Capsicum Project
MFC after:	3 months
2011-03-01 13:28:27 +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
Ed Schouten
60ae52f785 Use ISO C99 integer types in sys/kern where possible.
There are only about 100 occurences of the BSD-specific u_int*_t
datatypes in sys/kern. The ISO C99 integer types are used here more
often.
2010-06-21 09:55:56 +00:00
Ed Schouten
790f66db55 Remove unused LIBCOMPAT keyword from syscalls.master. 2010-02-08 10:02:01 +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
John Baldwin
773fa740c9 Include definitions for the audit identifiers for compat system calls in
sysproto.h.  This makes it possible to use SYSCALL_MODULE() for compat
system calls that live in kernel modules.
2009-06-22 20:14:10 +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
John Baldwin
0ec0b41cf6 Remove the now-unused NOIMPL flag. It serves no useful purpose given the
existing UNIMPL and NOSTD types.
2009-06-17 18:46:14 +00:00
Robert Watson
46c10f272c Add 'sy_flags', a currently unused per-syscall entry flags field that will
see future use in 9-CURRENT and 8-STABLE for features such as the
capability-mode enable flag and pay-as-you-audit.

Discussed with:	jhb, sson
2009-06-01 16:13:06 +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
John Birrell
e994ea8e55 Generate another function for the DTrace syscall provider to specify
the syscall argument types.

This code is only compiled into the systrace kernel modul and has no
effect otherwise.
2008-03-27 01:53:44 +00:00
Ruslan Ermilov
7f64829a5e Fixed type of the fourth argument of cpuset_{get,set}affinity(2) to be size_t.
Prodded by:	davidxu
2008-03-25 09:11:53 +00:00
Peter Wemm
9f0482e515 Add support for COMPAT6 syscalls.
Also, change the visibility of compat syscalls a slightly.  Compat
syscalls were missing from 'syscalls.h' entirely.  This additionally adds
them with their compat prefix.  eg: SYS_freebsd6_mmap.

Also, the syscalls.c names strings have different prefixes to differentiate
syscalls. Instead of several "old.mmap" strings, there will now be a
"compat.mmap" and "compat6.mmap" etc.  Before, both would have had the
same "old.mmap" label.

Approved by:  re
2007-07-04 22:38:28 +00:00
Tom Rhodes
6aeb05d7be Merge posix4/* into normal kernel hierarchy.
Reviewed by:	glanced at by jhb
Approved by:	silence on -arch@ and -standards@
2006-11-11 16:26:58 +00:00
John Baldwin
52a79796c4 Add a new set of macros <prefix>_AUE_<syscallname> to sysproto.h that
map to the audit event associated with a specific system call.  For
example, SYS_AUE___semctl would be set to AUE_SEMCTL in sys/sysproto.h.
2006-08-15 17:09:32 +00:00
John Birrell
1533c33fd4 Generate another file called systrace_args.c. This will be compiled
into systrace and is used to map the syscall arguments into the 64-bit
parameter array.
2006-08-03 05:29:09 +00:00
David Xu
64511d2abc Don't include sys/thr.h and umtx.h in sys/sysproto.h, it is unnecessary. 2006-08-02 08:09:24 +00:00
John Baldwin
af5bf12239 Now that all system calls are MPSAFE, retire the SYF_MPSAFE flag used to
mark system calls as being MPSAFE:
- Stop conditionally acquiring Giant around system call invocations.
- Remove all of the 'M' prefixes from the master system call files.
- Remove support for the 'M' prefix from the script that generates the
  syscall-related files from the master system call files.
- Don't explicitly set SYF_MPSAFE when registering nfssvc.
2006-07-28 19:05:28 +00:00
Robert Watson
f3596e3370 Introduce a new field in the syscalls.master file format to hold the
audit event identifier associated with each system call, which will
be stored by makesyscalls.sh in the sy_auevent field of struct sysent.
For now, default the audit identifier on all system calls to AUE_NULL,
but in the near future, other BSM event identifiers will be used.  The
mapping of system calls to event identifiers is many:one due to
multiple system calls that map to the same end functionality across
compatibility wrappers, ABI wrappers, etc.

Submitted by:	wsalamon
Obtained from:	TrustedBSD Project
2005-05-30 15:09:18 +00:00
Peter Wemm
1a58b07149 Remove the namespace column from the syscalls tables. We don't actually
use it, if we ever did.  They have been been VERY poorly maintained for
some time, possibly because they were a NOP.  FWIW, This brings our table
formats back closer to the other *BSD's.
2003-12-23 03:50:43 +00:00
Jeff Roberson
6eeb9653aa - Include umtx.h in files generated by makesyscalls.sh
- Add system calls for umtx.
2003-04-01 01:12:24 +00:00
Jeff Roberson
90e38817b7 - We now have to include umtx.h and ucontext.h in the system call related
headers.
2003-04-01 00:35:12 +00:00
David Malone
6bd34a1e6f The syscall names are string constants, so make them consts. 2002-10-29 15:47:06 +00:00
Alfred Perlstein
6d5dec35b7 Add the rest of the kernel support for the sem_ API in kern/uipc_sem.c.
Option 'P1003_1B_SEMAPHORES' to compile them in, or load the "sem" module
to activate them.

Have kern/makesyscalls.sh emit an include for sys/_semaphore.h into sysproto.h
to pull in the typedef for semid_t.

Add the syscalls to the syscall table as module stubs.
2002-09-19 00:43:32 +00:00
Alfred Perlstein
074453c230 Introduce syscall.master option 'COMPAT4' which allows one to wrap
syscalls for FreeBSD 4 compatibility.
Add kernel option COMPAT_FREEBSD4 to enable these syscalls.
2002-07-12 06:38:34 +00:00
Dag-Erling Smørgrav
d397408818 Usage style sweep: spell "usage" with a small 'u'.
Also change one case of blatant __progname abuse (several more remain)
This commit does not touch anything in src/{contrib,crypto,gnu}/.
2002-04-22 13:44:47 +00:00
Alfred Perlstein
1f31a77ce8 don't generate files with __P. 2002-03-19 20:48:32 +00:00
Bruce Evans
9a7f62c577 Oops, fix previous commit to not generate a C comment in syscall.mk. 2002-01-30 15:12:12 +00:00
Bruce Evans
0878983ab4 Escape $FreeBSD$ in a different way to avoid using the bogus escapes \$
and \F.  Awk just started warning about these.
2002-01-30 10:22:05 +00:00
Poul-Henning Kamp
5ab1bfacb1 Don't generate <sys/syscalls-hide.h> it has never had any users anywhere in
the source tree.
2001-10-13 09:17:49 +00:00
Marcel Moolenaar
49ead724c6 Fix breakage caused by previous commit. The lkmnosys and lkmressys
syscalls are of type NODEF but not in a way that fits the given
definition of that type. The exact difference of lkmressys and
lkmnosys is unclear, which makes it all the more confusing. A
reevaluation of what we have and what we really need is in order.

Spotted by: Maxime Henrion <mux@qualys.com>
Pointy hat: marcel
2001-10-07 00:16:31 +00:00
Marcel Moolenaar
4166877345 Make the NODEF type usable. A syscall of type NODEF will only
have its entry in the syscall table added. Nothing else is
done. This differs from type NOPROTO in that NOPROTO adds a
definition to syscall.h besides adding a sysent. A syscall can
now have multiple entries without conflict. Note that the
argssize is fixed and depends on the syscall name.
2001-09-28 01:21:57 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
David E. O'Brien
faf73940c6 Fix the definition generation code from rev 1.15 that generates non-style(9)
compliant structure definitions.
2001-09-05 01:27:53 +00:00
Matthew Dillon
356861db03 Remove the MPSAFE keyword from the parser for syscalls.master.
Instead introduce the [M] prefix to existing keywords.  e.g.
MSTD is the MP SAFE version of STD.  This is prepatory for a
massive Giant lock pushdown.  The old MPSAFE keyword made
syscalls.master too messy.

Begin comments MP-Safe procedures with the comment:
/*
 * MPSAFE
 */
This comments means that the procedure may be called without
Giant held (The procedure itself may still need to obtain
Giant temporarily to do its thing).

sv_prepsyscall() is now MP SAFE and assumed to be MP SAFE
sv_transtrap() is now MP SAFE and assumed to be MP SAFE

ktrsyscall() and ktrsysret() are now MP SAFE (Giant Pushdown)
trapsignal() is now MP SAFE (Giant Pushdown)

Places which used to do the if (mtx_owned(&Giant)) mtx_unlock(&Giant)
test in syscall[2]() in */*/trap.c now do not.  Instead they
explicitly unlock Giant if they previously obtained it, and then
assert that it is no longer held to catch broken system calls.

Rebuild syscall tables.
2001-08-30 18:50:57 +00:00
Thomas Moestl
a4189a088b Add padding before each element of the syscall argument structures in
sysproto.h in addition to the existing padding afterwards.
This is needed to support big-endian architectures like sparc64.

Reviewed by:	bde
Tested on alpha by:	jhb
2001-08-22 23:22:47 +00:00
Alfred Perlstein
3a4d365463 Add reserved lkmressys keyword. I swear, this script will die the
next time I need to hack on it.
2000-12-01 08:47:54 +00:00
Alfred Perlstein
1dc8643099 implement NOSTD syscall type, this creates the syscall args, but sticks
a lkmnosys into the sysent table so that SYSCALL_MODULE() works
2000-12-01 07:40:20 +00:00
Peter Wemm
ac2b067b9a Change the 'exit()' system call to 'sys_exit()'. This avoids overlapping
gcc's internal exit() prototypes and the (futile) hackery that we did to
try and avoid warnings.  main() was renamed for similar reasons.
Remove an exit related hack from makesyscalls.sh.
2000-07-29 00:16:28 +00:00
Bruce Evans
6b972e0bdd Fixed the calculation of sy_nargs in sysent tables. We attempted to do
this in awk using the hack of counting args of type off_t twice and args
of all other types once.  This is too simple to work.  It gave benignly
wrong results on alphas (off_t shouldn't be counted twice) and for
svr4_sys_mmap64() on i386's (off64_t should be counted twice).  It gave
fatally wrong results for i386's with 64-bit longs (longs should be
counted twice).  The correct value for sy_nargs is easier to determine
from the size of the args struct anyway, except for complications to
make the generated code almost readable.

Improved formatting of sysent tables by lining up the comments where
possible.
2000-05-09 21:18:30 +00:00
Alfred Perlstein
c01df63183 Make makesyscalls.sh parse an optional field 'MPSAFE' that specifies
that a syscall does not want the BGL to be grabbed automatically.

Add the new MPSAFE flag to the syscalls that dillon has determined to
be MPSAFE.
2000-04-03 06:36:14 +00:00
Robert Watson
91f37dcba1 Second pass commit to introduce new ACL and Extended Attribute system
calls, vnops, vfsops, both in /kern, and to individual file systems that
require a vfsop_ array entry.

Reviewed by:	eivind
1999-12-19 06:08:07 +00:00
Peter Wemm
dc42fe3cb3 Add $FreeBSD$ tags to generated files otherwise the checker won't let them
be committed.
1999-09-10 23:34:30 +00:00
Peter Wemm
dacec3e8f2 Id -> FreeBSD 1999-08-28 01:15:37 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
67f4e2ed05 Add trailing newline to sys/syscall.mk so that diff doesn't choke on it. 1998-06-28 10:01:52 +00:00