Commit Graph

466 Commits

Author SHA1 Message Date
Matthew Dillon
257d198890 Synchronize syscalls.master(s) with recent Giant pushdown work 2001-09-01 19:36:48 +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
Jim Pirzyk
814c95264f Added the linux_sysinfo function to implement sysinfo(2).
PR:		kern/27759
Reviewed by:	marcel
Approved by:	marcel
MFC after:	1 week
2001-07-23 06:22:10 +00:00
Jim Pirzyk
3d39316d2b Added the proper arguments the sysinfo system call
PR:		kern/27759
Reviewed by:	marcel
Approved by:	marcel
Obtained from:	Linux man page sysinfo(2)
MFC after:	1 week
2001-07-23 06:17:34 +00:00
John Baldwin
6be523bca7 Add a new MI pointer to the process' trapframe p_frame instead of using
various differently named pointers buried under p_md.

Reviewed by:	jake (in principle)
2001-06-29 11:10:41 +00:00
Peter Wemm
f41325db5f With this commit, I hereby pronounce gensetdefs past its use-by date.
Replace the a.out emulation of 'struct linker_set' with something
a little more flexible.  <sys/linker_set.h> now provides macros for
accessing elements and completely hides the implementation.

The linker_set.h macros have been on the back burner in various
forms since 1998 and has ideas and code from Mike Smith (SET_FOREACH()),
John Polstra (ELF clue) and myself (cleaned up API and the conversion
of the rest of the kernel to use it).

The macros declare a strongly typed set.  They return elements with the
type that you declare the set with, rather than a generic void *.

For ELF, we use the magic ld symbols (__start_<setname> and
__stop_<setname>).  Thanks to Richard Henderson <rth@redhat.com> for the
trick about how to force ld to provide them for kld's.

For a.out, we use the old linker_set struct.

NOTE: the item lists are no longer null terminated.  This is why
the code impact is high in certain areas.

The runtime linker has a new method to find the linker set
boundaries depending on which backend format is in use.

linker sets are still module/kld unfriendly and should never be used
for anything that may be modular one day.

Reviewed by:	eivind
2001-06-13 10:58:39 +00:00
Robert Watson
b1fc0ec1a7 o Merge contents of struct pcred into struct ucred. Specifically, add the
real uid, saved uid, real gid, and saved gid to ucred, as well as the
  pcred->pc_uidinfo, which was associated with the real uid, only rename
  it to cr_ruidinfo so as not to conflict with cr_uidinfo, which
  corresponds to the effective uid.
o Remove p_cred from struct proc; add p_ucred to struct proc, replacing
  original macro that pointed.
  p->p_ucred to p->p_cred->pc_ucred.
o Universally update code so that it makes use of ucred instead of pcred,
  p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo,
  cr_{r,sv}{u,g}id instead of p_*, etc.
o Remove pcred0 and its initialization from init_main.c; initialize
  cr_ruidinfo there.
o Restruction many credential modification chunks to always crdup while
  we figure out locking and optimizations; generally speaking, this
  means moving to a structure like this:
        newcred = crdup(oldcred);
        ...
        p->p_ucred = newcred;
        crfree(oldcred);
  It's not race-free, but better than nothing.  There are also races
  in sys_process.c, all inter-process authorization, fork, exec, and
  exit.
o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid;
  remove comments indicating that the old arrangement was a problem.
o Restructure exec1() a little to use newcred/oldcred arrangement, and
  use improved uid management primitives.
o Clean up exit1() so as to do less work in credential cleanup due to
  pcred removal.
o Clean up fork1() so as to do less work in credential cleanup and
  allocation.
o Clean up ktrcanset() to take into account changes, and move to using
  suser_xxx() instead of performing a direct uid==0 comparision.
o Improve commenting in various kern_prot.c credential modification
  calls to better document current behavior.  In a couple of places,
  current behavior is a little questionable and we need to check
  POSIX.1 to make sure it's "right".  More commenting work still
  remains to be done.
o Update credential management calls, such as crfree(), to take into
  account new ruidinfo reference.
o Modify or add the following uid and gid helper routines:
      change_euid()
      change_egid()
      change_ruid()
      change_rgid()
      change_svuid()
      change_svgid()
  In each case, the call now acts on a credential not a process, and as
  such no longer requires more complicated process locking/etc.  They
  now assume the caller will do any necessary allocation of an
  exclusive credential reference.  Each is commented to document its
  reference requirements.
o CANSIGIO() is simplified to require only credentials, not processes
  and pcreds.
o Remove lots of (p_pcred==NULL) checks.
o Add an XXX to authorization code in nfs_lock.c, since it's
  questionable, and needs to be considered carefully.
o Simplify posix4 authorization code to require only credentials, not
  processes and pcreds.  Note that this authorization, as well as
  CANSIGIO(), needs to be updated to use the p_cansignal() and
  p_cansched() centralized authorization routines, as they currently
  do not take into account some desirable restrictions that are handled
  by the centralized routines, as well as being inconsistent with other
  similar authorization instances.
o Update libkvm to take these changes into account.

Obtained from:	TrustedBSD Project
Reviewed by:	green, bde, jhb, freebsd-arch, freebsd-audit
2001-05-25 16:59:11 +00:00
Alfred Perlstein
2395531439 Introduce a global lock for the vm subsystem (vm_mtx).
vm_mtx does not recurse and is required for most low level
vm operations.

faults can not be taken without holding Giant.

Memory subsystems can now call the base page allocators safely.

Almost all atomic ops were removed as they are covered under the
vm mutex.

Alpha and ia64 now need to catch up to i386's trap handlers.

FFS and NFS have been tested, other filesystems will need minor
changes (grabbing the vm lock when twiddling page properties).

Reviewed (partially) by: jake, jhb
2001-05-19 01:28:09 +00:00
Daniel Eischen
b85c313a62 Preserve the state of the %gs register when setting up the signal
handler in Linux emulation.  According to bde, this is what Linux
does.

Recent versions of linuxthreads use %gs for thread-specific data,
while FreeBSD uses %fs (mostly because WINE uses %gs).

Tested by: drew
2001-05-12 03:23:10 +00:00
Mark Murray
fb919e4d5a Undo part of the tangle of having sys/lock.h and sys/mutex.h included in
other "system" header files.

Also help the deprecation of lockmgr.h by making it a sub-include of
sys/lock.h and removing sys/lockmgr.h form kernel .c files.

Sort sys/*.h includes where possible in affected files.

OK'ed by:	bde (with reservations)
2001-05-01 08:13:21 +00:00
Alan Cox
07be3b5e76 Regen after adding linux_sched_get_priority_max() and
linux_sched_get_priority_min().
2001-04-01 06:43:09 +00:00
Alan Cox
21c8cdfb96 Add linux_sched_get_priority_max() and linux_sched_get_priority_min(): The
policy parameter requires translation.
2001-04-01 06:37:40 +00:00
Dag-Erling Smørgrav
8f12c20f6c rfork() masks RFSTOPPED out of the flags it passes to fork1(), so we have
to call fork1() directly if we don't want out process queued right away.
This has the serendipitous side effect of saving us a call to pfind().

This makes threaded Linux apps (such as Opera) work again.
2001-03-11 18:52:10 +00:00
John Baldwin
19eb87d22a Grab the process lock while calling psignal and before calling psignal. 2001-03-07 03:37:06 +00:00
John Baldwin
6ad0e7c5cc Create clone'd linux processes as stopped processes at first and don't
actually make them runnable until after the emulator layer has had a chance
to perform fixups.
2001-03-06 02:59:46 +00:00
Matthew Dillon
0cc3ac8b6c Linux does not filesystem-sync file-backed writable mmap pages on
a regular basis.  Adjust our linux emulation to conform.  This will
cause more dirty pages to be left for the pagedaemon to deal with,
but our new low-memory handling code can deal with it.   The linux
way appears to be a trend, and we may very well make MAP_NOSYNC the
default for FreeBSD as well (once we have reasonable sequential
write-behind heuristics for random faults).
(will be MFC'd prior to 4.3 freeze)

Suggested by: Andrew Gallatin
2001-02-28 04:30:27 +00:00
Jake Burkholder
02318dac2c Remove the leading underscore from all symbols defined in x86 asm
and used in C or vice versa.  The elf compiler uses the same names
for both.  Remove asnames.h with great prejudice; it has served its
purpose.

Note that this does not affect the ability to generate an aout kernel
due to gcc's -mno-underscores option.

moral support from:	peter, jhb
2001-02-25 06:29:04 +00:00
David E. O'Brien
21a3ee0ead MFS: bring the consistent `compat_3_brand' support into -CURRENT
(the work was first done in the RELENG_4 branch near a release
	 during a MFC to make the code cleaner and more consistent)
2001-02-24 22:20:11 +00:00
Jonathan Lemon
2459336973 Allow debugging output to be controlled on a per-syscall granularity.
Also clean up debugging output in a slightly more uniform fashion.

The default behavior remains the same (all debugging output is turned on)
2001-02-16 16:40:43 +00:00
Jonathan Lemon
a25f3493bc Re-gen auto generated files. 2001-02-16 14:47:24 +00:00
Jonathan Lemon
3417b54986 Remove dummy stub functions. 2001-02-16 14:46:16 +00:00
Jonathan Lemon
705deb78a3 Add mount syscall to linux emulation. Also improve emulation of reboot. 2001-02-16 14:42:11 +00:00
John Baldwin
611d940790 Proc locking. 2001-01-24 00:27:28 +00:00
John Baldwin
fdfdfb786a - Proc locking.
- Use NULL instead of 0.
2001-01-24 00:23:30 +00:00
Dag-Erling Smørgrav
158eb2773f The Linuxulator needs sysvipc to work. 2001-01-14 18:16:01 +00:00
Dag-Erling Smørgrav
c094d916c4 Remove after repo-copy to sys/compat/linprocfs. 2000-12-12 22:01:59 +00:00
Dag-Erling Smørgrav
b51a26edb2 Add proc/<pid>/cmdline. 2000-12-09 16:20:48 +00:00
Dag-Erling Smørgrav
8b5a844af9 Add a dependency on procfs. 2000-12-09 16:20:35 +00:00
Dag-Erling Smørgrav
f786d43aac A bunch of fixes that have been rotting in my tree for a month or two
waiting for procfs to get fixed:

  - Use fill_eproc() to obtain correct VM stats. Attempt to compute VmLib.

  - Fill some more fields in proc/<pid>/stat, and add four (unimplemented)
    fields after studying a recent Linux kernel.

  - Compute CPU frequency only once instead of twice.

  - Fix some comments that were OBE.

  - Fix indentation except where it makes the code less readable.
2000-12-09 13:25:54 +00:00
John Baldwin
0de7d1da20 Protect access to p_stat with sched_lock. 2000-12-01 06:34:19 +00:00
Marcel Moolenaar
d034d459da Don't use p->p_sigstk.ss_flags to keep state of whether the
process is on the alternate stack or not. For compatibility
with sigstack(2) state is being updated if such is needed.

We now determine whether the process is on the alternate
stack by looking at its stack pointer. This allows a process
to siglongjmp from a signal handler on the alternate stack
to the place of the sigsetjmp on the normal stack. When
maintaining state, this would have invalidated the state
information and causing a subsequent signal to be delivered
on the normal stack instead of the alternate stack.

PR: 22286
2000-11-30 05:23:49 +00:00
Dag-Erling Smørgrav
fbbd9aebdd Add bogomips to cpuinfo (set it equal to the CPU frequency, which is bogus
but not more so than Linux' definition).
This should get the IBM JDK 1.3 working again.

Prompted by:	sobomax
2000-11-27 11:10:03 +00:00
Jonathan Lemon
14db7f978b Correct a misnamed argument hidden behind a #ifdef DEBUG
Found by:  LINT
2000-11-25 07:04:43 +00:00
Marcel Moolenaar
cc6ca9b35c o Change the argument of linux_sigreturn to be a pointer to a
struct sigframe. We need more than only the signal context.

o  Properly convert the signal mask when setting up the signal
   frame in linux_sendsig and properly convert it back in
   linux_sigreturn.

Do some cleanups and improve style while here.
2000-11-23 08:55:30 +00:00
Marcel Moolenaar
e26cc4467b Change the argument of linux_sigreturn to be a pointer to a
struct sigframe.
2000-11-23 08:53:19 +00:00
Marcel Moolenaar
466b14d758 Don't unregister the ioctl handlers before we verified we
can unload. Doing so leaves the linuxulator in a crippled
state (no ioctl support) when Linux binaries are run at
unload time.

While here, consistently spell ELF in capitals and perform
some minor style improvements.

ELF spelling submitted by: asmodai
2000-11-23 03:21:58 +00:00
Andrew Gallatin
088638dae4 remove redundant declaration of bsd_to_linux_sigset()
reviewed by: marcel
2000-11-16 02:08:40 +00:00
Andrew Gallatin
b595ab370b fix glaring bugs in rt signals -- copyout the right signal mask in
linux_rt_sendsig() and restore the same signal mask linux does
in rt_sigreturn().  This gets us saving/restoring all 64-bits of the
linux sigset_t in rt signals.

Reviewed by: marcel
2000-11-16 02:07:05 +00:00
Andrew Gallatin
2c4ab9ddfa Make linux_sendsig and linux_sigreturn use all 64 bits of a
linux_sigset_t by updating the linux_sigframe struct so as to include
linux's "extramask" field.  This field contains the upper 32-bits of
the sigset.  extramask sits behind a linux_fpstate struct, which I've
defined primarily for padding purposes.

While we're here, define LINUX_NSIG in terms of LINUX_NBPW (32) and
LINUX_NSIG_WORDS (2).

This fixes problems where threaded apps would accumulate a large
number of zombies.  This was happening because the exit signal resides
in the upper 32-bits of the sigset and was never getting unmasked by
the manager thread after the first child exited.

PR: 		misc/18530  (may be related, originator not yet contacted)
Reviewed by:	marcel
2000-11-13 20:44:05 +00:00
Marcel Moolenaar
ebea866055 Revert auto-generation. The Alpha port is broken.
Syncing with it is wrong.
2000-11-10 21:30:19 +00:00
Marcel Moolenaar
806d7daafe Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
Marcel Moolenaar
2da829a0c8 Sync with Alpha:
Do not use sysent.c, proto.h and syscall.h in source tree;
use auto-generated versions.
2000-11-09 07:27:55 +00:00
Dag-Erling Smørgrav
fd9f324055 Check that p->p_pptr is not NULL - kernel processes have no parents! 2000-11-06 03:23:56 +00:00
David E. O'Brien
83d2913008 Make the target a little bit more generic. 2000-11-01 08:47:34 +00:00
Andrew Gallatin
84aa58ab03 fix the sigaltstack hack by lowering the stack size to the original value
if the request was for less than MINSIGSTKSZ (in which case we "round up").
discussed with: marcel
2000-10-31 03:10:41 +00:00
Poul-Henning Kamp
da936bf80a Remove unneeded <stddef.h> #includes. 2000-10-29 16:57:42 +00:00
Dag-Erling Smørgrav
f8c05e5019 Bring cpuinfo closer to what it looks like in Linux 2.2.
Submitted by:	R Bradford Jones <brad@kazrak.com>
2000-10-25 22:38:23 +00:00
Dag-Erling Smørgrav
886a6f6fca Add /proc/<pid>/status and /proc/<pid>/stat (the latter being mostly
zeroes for the time being).

Prompted by:	Nathan Boeger <nathan@khmere.com>
2000-10-25 22:12:59 +00:00
Andrew Gallatin
242fae60f0 Some linux apps, such as IBM's JDK 1.3, will attempt to mmap thread
stacks near the top of their address space.  If their TOS is greater
than vm_maxsaddr, vm_map_growstack() will confuse the thread stack
with the process stack and deliver a SEGV if they attempt to grow the
thread stack past their current stacksize rlimit.  To avoid this,
adjust vm_maxsaddr upwards to reflect the current stacksize rlimit
rather than the maximum possible stacksize.  It would be better to
adjust the mmap'ed region, but some apps (again, IBM's JDK 1.3) do not
check mmap's return value..

This commit (in conjunction with setting MINSIGSTKSZ to 2048 &
rebuilding your kernel and modules) will get IBM's JDK 1.3 working
with FreeBSD at least well enough to run many of the example applets.

Reviewed by: marcel
Tested by:   sto@stat.duke.edu, many others on freebsd-java@
2000-10-17 00:25:43 +00:00
Andrew Gallatin
21b0b22ce3 regen after addition of linux_rt_sigreturn 2000-10-17 00:03:02 +00:00
Andrew Gallatin
7936339495 A start at an implemention of linux_rt_sendsig & linux_rt_sigreturn
and associated user-level signal trampoline glue.

Without this patch, an SA_SIGINFO style handler can be installed by a linux
app, but if the handler accesses its sip argument, it will get a garbage
pointer and likely segfault.

We currently supply a valid pointer, but its contents are mainly
garbage.  Filling this in properly is future work.

This is the second of 3 commits that will get IBM's JDK 1.3 working with
FreeBSD ...
2000-10-17 00:00:20 +00:00
Andrew Gallatin
931a725809 This is the first of 3 commits that will get IBM's JDK 1.3 working
with FreeBSD (not including the MINSIGSTKSZ issue, which belongs to
Marcel).  Due to time constraints, I'm going to space them out over a
few days.

This fixes two problems with linux_sigaltstack()

o ss == 0 is perfectly valid use, so do not fail in this case.

o Fix flag handling:
 - Our SS_DISABLE is 4, linux's is 2, so we need conversion routines.
	These conversion routines will be needed by linux_rt_sendsig()
	and linux_rt_sigreturn (forthcoming), so they are not static.
 - Linux's flag 0 historically meant SS_ONSTACK according to a comment
	in their linux/kernel/signal.c file.

Among other things, this fixes a warning from Sun's JDK 1.3:
"Java HotSpot(TM) Client VM warning: cannot uninstall alt signal stack"

Reviewed by: marcel
Tested by:   sto@stat.duke.edu, many others on freebsd-java@
2000-10-13 01:57:43 +00:00
Dag-Erling Smørgrav
e57416dc56 Mark directories as directories, not as regular files. 2000-10-10 12:32:44 +00:00
Dag-Erling Smørgrav
cd595ef506 Fix cut'n'paste bogon.
Submitted by:	Jim Pirzyk <Jim.Pirzyk@disney.com>
2000-09-18 17:46:01 +00:00
Dag-Erling Smørgrav
fecfecfbd0 Remove unused variables. 2000-09-09 14:35:35 +00:00
Dag-Erling Smørgrav
ddc0b9925d Add stat, uptime and version.
Note that version currently returns the first line of the version string
from vers.c, which is not quite what a Linux system would return.
2000-09-09 11:44:58 +00:00
Dag-Erling Smørgrav
81dc16f619 Pierre Beyssac originally derived linprocfs from procfs, and I've made (and
will keep making) significant modifications, so I'm adding both our copyrights
to the top of these files.
2000-09-07 16:44:26 +00:00
Marcel Moolenaar
dee4ec33cf When sigaltstack is called with a stack size that's not smaller
than LINUX_MINSIGSTKSZ but smaller than MINSIGSTKSZ, cheat and
pass MINSIGSTKSZ to the kernel. This is a workaround.

Submitted through: nate
2000-09-06 06:08:54 +00:00
Dag-Erling Smørgrav
9acf7ab9bc Remove obsolete comment (see rev 1.84 of procfs_vnops.c) 2000-09-04 18:19:04 +00:00
Robert Watson
c0ea0959b8 o Synchronize linprocfs authorization with procfs authorization improvements
(better hiding of hidden processes, more access checks, use vaccess(), et
  al)

Approved by:	des
Obtained from:	TrustedBSD Project
2000-09-01 18:40:52 +00:00
Robert Watson
9cd5f4c13b o Update linprocfs to include similar changes as those in procfs, fixing
the build (oops!): replace calls to p_trespass() and PRISON_CHECK()
  with p_can(..., {P_CAN_SEE, P_CAN_DEBUG}, NULL)
o Remove volatile usage from procfs_readdir() to remove warnings
o Apply bp's CREATE fix to linprocfs, causing EROFS to be returned on
  CREATE calls to procfs_lookup()
o Some further synchronization still needs to occur: only existing
  access checks were replaced, to fix the build--the new ones were not
  added.  I'll do this later today, this is a "fix the build quickly"
  commit.  This means that, in the interim, some information leakage
  can still occur via linprocfs when using jail or kern.ps_showallprocs

Submitted by:	knu
Approved by:	des
Obtained from:	TrustedBSD Project
2000-08-30 13:23:19 +00:00
Marcel Moolenaar
bc34729c47 Fix typo in license. 2000-08-25 07:32:24 +00:00
Marcel Moolenaar
3ed7f6a56f Finish the Linuxulator MD/MI split.
In summary:
o  This file has been moved to sys/compat/linux,
o  Any MD syscalls in this file are moved to
   linux_machdep.c in sys/i386/linux,
o  Include directives, makefiles and config files
   have been updated.
2000-08-22 07:08:33 +00:00
Marcel Moolenaar
322bfdc330 Update include directives for Linuxulator headers after the
MD/MI split.
2000-08-22 05:57:55 +00:00
Marcel Moolenaar
146aad745b Collect the MD syscalls from /sys/compat/linux here. Since this
is a new file, fix most of the style bugs at the same time.
2000-08-22 02:24:02 +00:00
Bruce Evans
c6e4d7c5ba Fixed null pointer panic for accessing "meminfo" when there is no swap. 2000-08-12 21:08:42 +00:00
Peter Wemm
3a285cc807 Regen. (Fix SYS_exit) 2000-07-29 10:07:38 +00:00
Peter Wemm
4e0f152bbe Sigh. Fix SYS_exit problems. I misunderstood the significance of these
trailing options.
2000-07-29 10:05:25 +00:00
Peter Wemm
69065e880a Regenerate with makesyscalls.sh 2000-07-29 00:21:50 +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
Marcel Moolenaar
4c02bded00 Remove the only use of SCARG and perform dead code elimination. 2000-07-27 01:22:24 +00:00
Marcel Moolenaar
03567510a8 Add bounds checking to stackgap_alloc. Previously it was possible
to construct a path that was long enough (ie longer than
SPARE_USRSPACE bytes) and trash the stack.

Note that SPARE_USRSPACE is much smaller than MAXPATHLEN so that
the Linuxulator will now return ENAMETOOLONG even if the path
is smaller than MAXPATHLEN.

PR: 12749
2000-07-23 16:54:18 +00:00
Marcel Moolenaar
a603fe5a07 Revert implementation of setfsuid and setfsgid due to security
issues.

Requested by: rwatson
Backed by: kris
2000-07-20 05:37:41 +00:00
Marcel Moolenaar
d5124417a7 Implement pread and pwrite.
PR: 17991
Submitted by: Geoffrey Speicher <geoff@caribbean.sea-incorporated.com>
2000-07-17 00:17:07 +00:00
Marcel Moolenaar
6037da7d24 Add prototypes for linux_pread and linux_pwrite.
PR: 17991
Submitted by: Geoffrey Speicher <geoff@caribbean.sea-incorporated.com>
2000-07-17 00:13:38 +00:00
Marcel Moolenaar
ddb48608ab Implement setfsuid and setfsgid. Implementation derived from patch
in PR.

PR: 16993
Submitted by: Bjoern Groenvall <bg@sics.se>
2000-07-16 21:23:34 +00:00
Marcel Moolenaar
fbdf894562 Simplify the F_GETOWN and F_SETOWN fcntl commands. The workaround
is not needed since the FreeBSD native implementation switched
from TIOC{G|S}PGRP to FIO{G|S}ETOWN (kern_descrip.c rev 1.55).

PR: 16946
Submitted by: Victor Salaman <salaman@teknos.com>
2000-07-15 22:33:24 +00:00
Poul-Henning Kamp
77978ab8bc Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.
Pointed out by:	bde
2000-07-04 11:25:35 +00:00
Poul-Henning Kamp
82d9ae4e32 Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:
Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our
sources:

        -sysctl_vm_zone SYSCTL_HANDLER_ARGS
        +sysctl_vm_zone (SYSCTL_HANDLER_ARGS)
2000-07-03 09:35:31 +00:00
Martin Cracauer
6f6b2cd019 Linux allows to mmap annonymous with a file descriptor passed, FreeBSD
doesn't.  In the Linux emulation layer, ignore the fd passed when
MAP_ANON is specified.

Known application to be fixed: Xanalys/Harlequin Lispworks

Also improve debug output for mmap, now showing what the emulation
layer mapped to what (-DDEBUG).

Reviewed by:	marcel
2000-06-15 09:57:34 +00:00
Jake Burkholder
e39756439c Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
Dag-Erling Smørgrav
ce4e34c875 Make exe a symlink. 2000-05-24 07:37:02 +00:00
Jake Burkholder
740a1973a6 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
David E. O'Brien
589607c435 AT&T asm syntax requires a leading '*' in front of the operand for indirect
calls and jumps.
2000-05-10 01:21:15 +00:00
Bruce Evans
9114579d7a Regenerated (fixed the calculation of sy_nargs in sysent tables). 2000-05-09 21:52:02 +00:00
Bruce Evans
29270d20bc Fixed the return type for exit() and the args struct tag several NOPROTO
syscalls including exit().  These entries were unused, so the bugs had no
effect, but the the args struct tag will be used to calculate sy_nargs
correctly.  exit() was wrong in all emulators.
2000-05-09 18:23:16 +00:00
Peter Wemm
1d91482db9 Add a version tag for the rtc port to depend on. 2000-05-06 01:36:04 +00:00
Poul-Henning Kamp
2c9b67a8df Remove unneeded #include <vm/vm_zone.h>
Generated by:	src/tools/tools/kerninclude
2000-04-30 18:52:11 +00:00
Matthew Dillon
d323ddf317 Fix #! script exec under linux emulation. If a script is exec'd from a
program running under linux emulation, the script binary is checked for
    in /compat/linux first.  Without this patch the wrong script binary
    (i.e. the FreeBSD binary) will be run instead of the linux binary.
    For example, #!/bin/sh, thus breaking out of linux compatibility mode.

    This solves a number of problems people have had installing linux
    software on FreeBSD boxes.
2000-04-26 20:58:40 +00:00
Mike Smith
ce0cdebef3 Fix include paths so that this builds correctly.
Submitted by:	Mike Pritchard <mpp@mppsystems.com>
2000-04-21 05:54:11 +00:00
Mike Smith
06ab4b95d8 Move the linprocfs bits under the rest of the i386 linux compatibility
code.
2000-04-20 03:54:27 +00:00
Poul-Henning Kamp
ed6aff7387 Remove unneeded <sys/buf.h> includes.
Due to some interesting cpp tricks in lockmgr, the LINT kernel shrinks
by 924 bytes.
2000-04-18 15:15:39 +00:00
David E. O'Brien
c815a20cb2 Change our ELF binary branding to something more acceptable to the Binutils
maintainers.

After we established our branding method of writing upto 8 characters of
the OS name into the ELF header in the padding; the Binutils maintainers
and/or SCO (as USL) decided that instead the ELF header should grow two new
fields -- EI_OSABI and EI_ABIVERSION.  Each of these are an 8-bit unsigned
integer.  SCO has assigned official values for the EI_OSABI field.  In
addition to this, the Binutils maintainers and NetBSD decided that a better
ELF branding method was to include ABI information in a ".note" ELF
section.

With this set of changes, we will now create ELF binaries branded using
both "official" methods.  Due to the complexity of adding a section to a
binary, binaries branded with ``brandelf'' will only brand using the
EI_OSABI method.  Also due to the complexity of pulling a section out of an
ELF file vs. poking around in the ELF header, our image activator only
looks at the EI_OSABI header field.

Note that a new kernel can still properly load old binaries except for
Linux static binaries branded in our old method.

  *
  * For a short period of time, ``ld'' will also brand ELF binaries
  * using our old method.  This is so people can still use kernel.old
  * with a new world.  This support will be removed before 5.0-RELEASE,
  * and may not last anywhere upto the actual release.  My expiration
  * time for this is about 6mo.
  *
2000-04-18 02:39:26 +00:00
Nick Sayer
c36837a8d8 Fix some style bugs. The long line is in a chunk of code that's
being rewritten, though.

Submitted by:	bde
2000-03-13 15:27:19 +00:00
Marcel Moolenaar
3c1124cfdf Fix bug in linux_wait4 and linux_waitpid where garbage in the status
argument could panic the kernel.

Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
Prompted by: jkh, gallatin
Approved by: prompters
2000-03-09 17:52:01 +00:00
Nick Sayer
9deb82d478 Implement Linux BLKGETSIZE ioctl, and open the door to implementing
other BLK.* ioctls should the desire arize.

Approved by:	jkh (via dufault)
2000-03-09 15:14:14 +00:00
Marcel Moolenaar
dba5ab6662 Fix accept(2) behavior in that accepted sockets don't inherit the
parents flags.

Note on the PR:
The PR contains another patch that's not being committed without
further background information. The PR stays open for now.

PR: 16946 (Victor A. Salaman <salaman@teknos.com>)
Prompted by: msmith
Indirect/implicit approval: jkh (shoot me if I'm wrong :-)
2000-02-28 18:58:59 +00:00
Nick Sayer
651e921455 Avoid passing an uninitialized structure member to the real
READSUBCHANNEL ioctl. This makes vmware work with SCSI CDROM
drives.

Approved by:	jkh
2000-02-01 16:20:24 +00:00
Peter Wemm
edfd254255 Regen after pointing to the real setres[ug]id(). Remove dummy function.
(Note: getres[ug]id is still a dummy as it returns via pointers to a
 different sized integer and does need real wrappers.)
2000-01-29 12:45:36 +00:00
Peter Wemm
11247956d8 Use the real setres[ug]id(2) rather than dummy stubs. Newer glibc's
call this.
2000-01-29 12:43:29 +00:00
Marcel Moolenaar
0484ef81d9 Update syscalls to Linux kernel 2.3.38. These syscalls are
implemented as dummies to ease problem solving.
2000-01-10 22:19:06 +00:00
Marcel Moolenaar
20ebea30eb Update the syscalls to Linux kernel 2.3.38. 2000-01-10 22:16:35 +00:00
Marcel Moolenaar
759eb4613e Return Linux kernel version 2.2.12 by default. This is in line
with linux_base-6.1.
2000-01-10 13:09:08 +00:00
Marcel Moolenaar
dca60efcc9 Convert the filesystem type returned in struct statfs by syscalls
linux_statfs and linux_fstatfs. Linux binaries testing this expect
the filesystem's magic number and not our vnode's tag.

PR: 15425
Tested by: Vladimir N. Silyaev <vsilyaev@mindspring.com>
2000-01-08 21:09:41 +00:00
Bruce Evans
7eed718873 Include <stddef.h> here so that <sys/assym.h> can be unpolluted.
Include <sys/param.h> before <sys/assym.h> in case any of the magic
in the former is ever needed in the latter.
2000-01-08 19:53:18 +00:00
Marcel Moolenaar
e8c295abe6 Make offsetof equivalent with <stddef.h>. This paves the way for
further enhancements/reorganisations.

Discussed with: bde
2000-01-03 16:49:39 +00:00
Bruce Evans
654f6be1c8 Changed the type used to represent the user stack pointer from `long *'
to `register_t *'.  This fixes bugs like misplacement of argc and argv
on the user stack on i386's with 64-bit longs.  We still use longs to
represent "words" like argc and argv, and assume that they are on the
stack (and that there is stack).  The suword() and fuword() families
should also use register_t.
1999-12-27 10:42:55 +00:00
Marcel Moolenaar
00d6d49adc Use genassym(1) and <sys/assym.h> to generate assembler symbols. 1999-12-23 19:59:47 +00:00
Eivind Eklund
762e6b856c Introduce NDFREE (and remove VOP_ABORTOP) 1999-12-15 23:02:35 +00:00
Marcel Moolenaar
af3a75ec0d Remove unused includes.
Found by: phk-scan
1999-12-10 12:36:20 +00:00
Archie Cobbs
7ec7564af4 Fix LINT breakage. 1999-12-05 18:49:09 +00:00
Marcel Moolenaar
43bef51567 Implement pluggable ioctl handlers.
Other modules can register and unregister ioctl handlers to extend the
ioctls known by the Linuxulator. A recent application is the vmware
port. The Linuxulator itself uses the new interface to register its
handlers as well. Handlers for the following types of ioctls have been
defined:
	cdrom
	console (=keyboard and VT handling)
	socket
	sound
	termio

All ioctl related defines and declarations have been moved to a new
file (linux_ioctl.h), except for the pluggable ioctl handler interface
definition.

While there, cleanup linux.h some more.

linux.h and linux_ioctl.[ch] have been made to conform to style(9) as
much as possible.

Inspired and reviewed by: Vladimir N. Silyaev
1999-12-04 11:10:22 +00:00
Marcel Moolenaar
ec99e32256 Implement linux_sigaltstack. 1999-11-30 15:02:28 +00:00
Marcel Moolenaar
56d6dc1d34 Implement sigaltstack. 1999-11-30 15:00:17 +00:00
Alfred Perlstein
fac9a03b4e add linuxulator wrapper for SNDCTL_DSP_GETODELAY 1999-11-29 23:03:34 +00:00
Marcel Moolenaar
408da11907 Implement linux_ustat.
Reviewed by: bde
1999-11-27 16:55:14 +00:00
Marcel Moolenaar
c48ba18b4a Change prototype of linux_ustat. 1999-11-27 16:50:54 +00:00
Marcel Moolenaar
25e5bdab9e Implement fdatasync in terms of fsync. The regeneration of proto.h,
syscall.h and sysent.h was probably forgotten after the last change
syscalls.master.
1999-11-26 10:20:10 +00:00
Poul-Henning Kamp
3e30338edd simplify check for device. 1999-11-08 09:59:17 +00:00
Peter Wemm
53c2c4e22b Use fo_stat() rather than Yet Another duplication of kern_descrip.c's stat
code.
1999-11-08 03:33:21 +00:00
Poul-Henning Kamp
02c58685a4 Change useracc() and kernacc() to use VM_PROT_{READ|WRITE|EXECUTE} for the
"rw" argument, rather than hijacking B_{READ|WRITE}.

Fix two bugs (physio & cam) resulting by the confusion caused by this.

Submitted by:   Tor.Egge@fast.no
Reviewed by:    alc, ken (partly)
1999-10-30 06:32:05 +00:00
Poul-Henning Kamp
923502ff91 useracc() the prequel:
Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>.  This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.

This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
1999-10-29 18:09:36 +00:00
Marcel Moolenaar
5a02dbe45a Fix the duplicate filenames that are the result of using getdents.
glibc2 defines struct dirent differently than the Linux kernel does.
The getdents function therefore needs to read a heuristically defined
number of kernel dirents to satisfy the request. In case where too
many kernel dirents have been read, the function lseeks on the
directory so that a next call will start with the right dirent. The
offset used in lseeking is the offset-field in the last dirent passed
to the application. This can only mean that the offset-field holds
the offset of the next dirent and not the offset of the dirent itself.
1999-10-21 09:14:49 +00:00
Luoqi Chen
645682fd40 Add a per-signal flag to mark handlers registered with osigaction, so we
can provide the correct context to each signal handler.

Fix broken sigsuspend(): don't use p_oldsigmask as a flag, use SAS_OLDMASK
as we did before the linuxthreads support merge (submitted by bde).

Move ps_sigstk from to p_sigacts to the main proc structure since signal
stack should not be shared among threads.

Move SAS_OLDMASK and SAS_ALTSTACK flags from sigacts::ps_flags to proc::p_flag.
Move PS_NOCLDSTOP and PS_NOCLDWAIT flags from proc::p_flag to procsig::ps_flag.

Reviewed by:	marcel, jdp, bde
1999-10-11 20:33:17 +00:00
John Hay
5cdfd8f709 Swap IOC_OUT and IOC_IN for the SETDIR macro. The linux ioctl read and
write bits are swapped.

Reviewed by:	luoqi, marcel
1999-10-06 19:51:37 +00:00
Marcel Moolenaar
956d3333ca sigset_t change (part 4 of 5)
-----------------------------

The compatibility code and/or emulators have been updated:

iBCS2 now mostly uses the older syscalls. SVR4 now properly
handles all signals. This has been achieved by using the
new sigset_t throughout the emulator. The Linuxulator has
been severely updated. Internally the new Linux sigset_t is
made the default. These are then mapped to and from the
new FreeBSD sigset_t.

Also, rt_sigsuspend has been implemented in the Linuxulator.
Implementing this syscall basicly caused all this sigset_t
changing in the first place and the syscall has been used
throughout the change as a means for testing. It basicly is
too much work to undo the implementation so that it can
later be added again.

A special note on the use of sv_sigtbl and sv_sigsize in
struct sysentvec:
Every signal larger than sv_sigsize is not translated and is
passed on to the signal handler unmodified. Signals in the
range 1 upto and including sv_sigsize are translated.
The rationale is that only the system defined signals need to
be translated.

The emulators also have been updated so that the translation
tables are only indexed for valid (system defined) signals.
This change also fixes the translation bug already in the
SVR4 emulator.
1999-09-29 15:12:18 +00:00
Poul-Henning Kamp
ae8e1d08d7 This patch clears the way for removing a number of tty related
fields in struct cdevsw:

        d_stop          moved to struct tty.
        d_reset         already unused.
        d_devtotty      linkage now provided by dev_t->si_tty.

These fields will be removed from struct cdevsw together with
d_params and d_maxio Real Soon Now.

The changes in this patch consist of:

        initialize dev->si_tty in *_open()
        initialize tty->t_stop
        remove devtotty functions
        rename ttpoll to ttypoll
        a few adjustments to these changes in the generic code
        a bump of __FreeBSD_version
        add a couple of FreeBSD tags
1999-09-25 16:21:39 +00:00
Marcel Moolenaar
1beb0dc732 Linux doesn't complain if you remove a msg queue that doesn't exist
(given the proper permissions).
1999-09-23 09:57:45 +00:00
Luoqi Chen
f581b15f47 Regeneration. 1999-09-22 22:05:37 +00:00
Luoqi Chen
2323686abc Implement linux_ioperm() syscall. Fix linux_iopl() to use the level argument.
SVGAlib should now work.

Reviewed by:	marcel
1999-09-22 22:01:51 +00:00
Brian Feldman
13ccadd4b0 This is what was "fdfix2.patch," a fix for fd sharing. It's pretty
far-reaching in fd-land, so you'll want to consult the code for
changes.  The biggest change is that now, you don't use
	fp->f_ops->fo_foo(fp, bar)
but instead
	fo_foo(fp, bar),
which increments and decrements the fp refcount upon entry and exit.
Two new calls, fhold() and fdrop(), are provided.  Each does what it
seems like it should, and if fdrop() brings the refcount to zero, the
fd is freed as well.

Thanks to peter ("to hell with it, it looks ok to me.") for his review.
Thanks to msmith for keeping me from putting locks everywhere :)

Reviewed by:	peter
1999-09-19 17:00:25 +00:00
Marcel Moolenaar
13d9e61a67 Fix getcwd. It must return the length of the path including the terminating 0.
While I'm here, fix style and debug printf.

Fix derived from patch by: Darryl Okahata <darrylo@sr.hp.com>
1999-09-17 08:35:08 +00:00
Peter Wemm
5a90d999a9 <machine/soundcard.h> -> <sys/soundcard.h>, since it's an exported API
that's arch neutral and OSS API and Linux API compatable.
1999-09-04 14:15:26 +00:00
Marcel Moolenaar
6771d80337 I missed the namechange of field desc in struct i386_ldt_args into descs while
reviewing luoqi's changes...

Pointed out by: luoqi
1999-09-03 06:18:39 +00:00
Marcel Moolenaar
ff78e85043 Implementation of the modify_ldt syscall. Use the sysarch() interface to do
the actual work. When USER_LDT is not defined for a kernel, sysarch returns
EOPNOTSUPP. Display a message in that case and return ENOSYS to userland.

Reviewed by: luoqi
1999-09-02 21:50:42 +00:00
Marcel Moolenaar
e459b442df Fix a braino: Linux minor device numbers are 8 bits wide and not 10. 1999-08-29 11:47:01 +00:00
Marcel Moolenaar
d4c45842d7 Fix a missing '-1' in the size argument of copyout in getgroups. Spotted while
reviewing the MFC in -stable.
1999-08-29 08:52:38 +00:00
Marcel Moolenaar
86f95e6b6d Implement the OSS_GETVERSION ioctl. The version returned can be changed through
the sysctl variable `compat.linux.oss_version'.

PR: 12917
Originator: Dean Lombardo <dlombardo@excite.com>
1999-08-28 08:43:03 +00:00
Peter Wemm
2185977908 Regen after Id->FreeBSD 1999-08-28 02:35:56 +00:00
Peter Wemm
280652828b $Id$ -> $FreeBSD$ 1999-08-28 02:16:32 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Marcel Moolenaar
c6dfea0ebd Add sysctl variables for the Linuxulator. These reside under `compat.linux' as
discussed on current.

The following variables are defined (for now):

    osname (defaults to "Linux")
        Allow users to change the name of the OS as returned by uname(2),
        specially added for all those Linux Netscape users and statistics
        maniacs :-) We now have what we all wanted!

    osrelease (defaults to "2.2.5")
        Allow users to change the version of the OS as returned by uname(2).
        Since -current supports glibc2.1 now, change the default to 2.2.5
        (was 2.0.36).

    oss_version (defaults to 198144 [0x030600])
        This one will be used by the OSS_GETVERSION ioctl (PR 12917) which I
        can commit now that we have the MIB. The default version number is the
        lowest version possible with the current 'encoding'.

A note about imprisoned processes (see jail(2)):
  These variables are copy-on-write (as suggested by phk). This means that
  imprisoned processes will use the system wide value unless it is written/set
  by the process. From that moment on, a copy local to the prison will be
  used.

A note about the implementation:
  I choose to add a single pointer to struct prison, because I didn't like the
  idea of changing struct prison every time I come up with a new variable. As
  a side effect, the extra storage is only needed when a variable is set from
  within the prison. This also minimizes kernel bloat when the Linuxulator is
  not used; both compiled in or as a module.

Reviewed by: bde (first version only) and phk
1999-08-27 19:47:41 +00:00
Marcel Moolenaar
ae4ea3eed4 Use ALIGN_TEXT macro for alignment to avoid ambiguity.
Pointed out by: bde
1999-08-25 19:04:39 +00:00
Marcel Moolenaar
4e0eaf6924 Fix linux_newlstat in that it doesn't return the attributes of its containing
directory. Also, update arguments of NDINIT for both newstat and newlstat.

While I'm at it, fix style bugs in all {s|ls|fs}tat syscalls.

Reported by: bde
1999-08-25 15:23:54 +00:00
Marcel Moolenaar
c85f67175f Fix {g|s}etgroups semantics. We use cr_groups[0] to hold egid. This means that
egid will be twice in the set and that setting cr_groups[0] will change egid.
This is simply solved by ignoring cr_groups[0]. That is; linux_getgroups does
not return cr_groups[0] and linux_setgroups does not touch it.

Noticed by: bde
Brought to my attention by: sheldonh
1999-08-25 14:11:01 +00:00
Marcel Moolenaar
296f7267f3 Fix lingo: 'is not implemented or obsoleted' is not the same as 'is obsoleted
or not implemented'.
1999-08-25 13:17:05 +00:00
Marcel Moolenaar
2fdc82e093 Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always
know if and when an unimplemented or obsoleted syscall is being used. Make the
message more end-user friendly.

And as long as we're here, rename some unimplemeted syscalls (linux_phys ->
linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86).

Change prototype for linux_newuname from `struct linux_newuname_t *' into
`struct linux_new_utsname *'. This change is reflected in linux.h and
linux_misc.c.
1999-08-25 11:19:03 +00:00
Marcel Moolenaar
fc4529a0d1 Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always
know if and when an unimplemented or obsoleted syscall is being used. Make the
message more end-user friendly.

And as long as we're here, rename some unimplemeted syscalls (linux_phys ->
linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86).

Change prototype for linux_newuname from `struct linux_newuname_t *' into
`struct linux_new_utsname *'. This change is reflected in linux.h and
linux_misc.c.

Lastly, make line-continuation and indentation more uniform.
1999-08-25 11:17:36 +00:00
Marcel Moolenaar
8ebe972975 Fix stack misalignment for Linux binaries caused by `linux_sigcode' not being
a multiple of 4 bytes in size. This solves the recent SIGBUS errors for
glibc2.1 configurations.

Explained by: bde
1999-08-25 09:05:29 +00:00
Marcel Moolenaar
4c60745daf Fix a bug in debug-printfs of struct linux_termios fields, where I forgot to
change the format specifier after changing the definition of the structure.

Submitted by: billf
Commented on by: bde
1999-08-17 10:27:55 +00:00