Commit Graph

200 Commits

Author SHA1 Message Date
david bf4bf03db8 Refine bounds check code. 2004-11-07 04:08:37 +00:00
david 090b8be8f9 Bounds check syscall arguments where appropriate 2004-10-27 19:29:56 +00:00
jdolecek f83c14f534 only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise 2004-09-12 10:38:25 +00:00
cgd 61d7e536bd Fix my license notice. Back when hpux_exec.c was cloned from
sys/kern/exec_aout.c back in *1995*, apparently the line from my
license notice:
 *    must display the following acknowledgement:
was accidentally dropped.  This mistake was propagated into
hpux_exec_aout.c when it was split out of hpux_exec.c.
(Thanks to hubertf for noticing!)
2004-08-21 22:27:04 +00:00
pk c245462cb8 hpux_ioctl(): acquire a reference to the file. 2004-06-01 11:05:40 +00:00
matt c768d54573 Constify an array. 2004-04-25 06:04:54 +00:00
fvdl d99705e941 Put back Emmanuel's sigfilter hooks, as decided by Core. 2003-12-20 19:01:29 +00:00
manu b23b73b953 Introduce lwp_emuldata and the associated hooks. No hook is provided for the
exec case, as the emulation already has the ability to intercept that
with the e_proc_exec hook. It is the responsability of the emulation to
take appropriaye action about lwp_emuldata in e_proc_exec.

Patch reviewed by Christos.
2003-12-20 18:22:16 +00:00
jdolecek 0e253cf5f5 back the sigfilter emulation hook change off 2003-12-05 21:12:42 +00:00
manu 18e13eee35 Add a sigfilter emulation hook. It is used at the beginning of kpsignal2()
so that a specific emulation has the oportunity to filter out some signals.

if sigfilter returns 0, then no signal is sent by kpsignal2().

There is another place where signals can be generated: trapsignal. Since this
function is already an emulation hook, no call to the sigfilter hook was
introduced in trapsignal.

This is needed to emulate the softsignal feature in COMPAT_DARWIN (signals
sent as Mach exception messages)
2003-12-03 20:24:51 +00:00
thorpej 052ba0ec50 We have CVS; there is no reason to make .bak files when generating the
syscall tables.
2003-11-15 20:30:59 +00:00
tsutsui 518c5a2e6a Fix an uninitialized warning. 2003-11-01 17:48:20 +00:00
lukem f85d2d1c14 Use ${HOST_SH} instead of `sh'.
If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.
2003-10-26 07:25:33 +00:00
chs 939df36e55 add support for non-executable mappings (where the hardware allows this)
and make the stack and heap non-executable by default.  the changes
fall into two basic catagories:

 - pmap and trap-handler changes.  these are all MD:
   = alpha: we already track per-page execute permission with the (software)
	PG_EXEC bit, so just have the trap handler pay attention to it.
   = i386: use a new GDT segment for %cs for processes that have no
	executable mappings above a certain threshold (currently the
	bottom of the stack).  track per-page execute permission with
	the last unused PTE bit.
   = powerpc/ibm4xx: just use the hardware exec bit.
   = powerpc/oea: we already track per-page exec bits, but the hardware only
	implements non-exec mappings at the segment level.  so track the
	number of executable mappings in each segment and turn on the no-exec
	segment bit iff the count is 0.  adjust the trap handler to deal.
   = sparc (sun4m): fix our use of the hardware protection bits.
	fix the trap handler to recognize text faults.
   = sparc64: split the existing unified TSB into data and instruction TSBs,
	and only load TTEs into the appropriate TSB(s) for the permissions.
	fix the trap handler to check for execute permission.
   = not yet implemented: amd64, hppa, sh5

 - changes in all the emulations that put a signal trampoline on the stack.
   instead, we now put the trampoline into a uvm_aobj and map that into
   the process separately.

originally from openbsd, adapted for netbsd by me.
2003-08-24 17:52:28 +00:00
he 6d211e7dbf Re-balance parens. 2003-08-18 20:34:18 +00:00
christos 3b9c3c5aab - GC all the setup_stack functions
- add one for linux/i386
2003-08-08 18:57:01 +00:00
agc aad01611e7 Move UCB-licensed code from 4-clause to 3-clause licence.
Patches provided by Joel Baker in PR 22364, verified by myself.
2003-08-07 16:26:28 +00:00
jdolecek 16b74086ed replace fuword() with copyin(), and suword() with copyout() 2003-08-02 19:21:48 +00:00
fvdl d5aece61d6 Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
2003-06-29 22:28:00 +00:00
thorpej f4fff81d3a Adapt to ktrace/lwp changes. 2003-06-29 15:49:49 +00:00
darrenr 960df3c8d1 Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
2003-06-28 14:20:43 +00:00
thorpej f4a068d5c2 Use PAGE_SIZE rather than NBPG. 2003-04-01 01:43:29 +00:00
he 9f8115667b Adapt to changed signature for ioctl routine (caddr_t -> void*). 2003-03-27 15:54:02 +00:00
dsl bd99e3429d Use 'void *' instead of 'caddr_t' in prototypes of VOP_IOCTL, VOP_FCNTL
and VOP_ADVLOCK, delete casts from callers (and some to copyin/out).
2003-03-21 23:11:19 +00:00
jdolecek 25d6f89a59 update emul alarm syscalls to recent timer changes
problem encountered by Luke Mewburn for linux emul, problem spot
found by Enami Tsugutomo
2003-02-19 11:23:53 +00:00
jdolecek d4ad86a080 finish LWPify 2003-01-21 03:16:06 +00:00
thorpej a03cb2b851 Regen to get correct RCS ID. 2003-01-18 23:28:15 +00:00
thorpej 790d584247 Regen: Merge the nathanw_sa branch. 2003-01-18 07:37:32 +00:00
thorpej f12607ba9f Merge the nathanw_sa branch. 2003-01-18 07:36:56 +00:00
gmcgarry 6b5b61b136 Update for revised ktrsyscall() prototype.
Perhaps this file should be changed to use trace_enter() so that
systrace works for aliased syscalls?  Leave that for someone familiar
with the systrace system.
2002-12-23 01:08:45 +00:00
atatat 7caa308c63 Complete the rename: s/sa_/<compat>_sa_/g
Also tweak the darwin siginfo stuff to avoid the same type of collision.
2002-11-27 16:44:01 +00:00
uebayasi c041971257 Fix compilation errors introduced by recent trace_enter()/ktrsyscall() changes.
Provided by FUKAUMI Naoki <naoki at fukaumi dot org> in kern/19070.
2002-11-16 07:40:38 +00:00
jdolecek f50246965e handle __HAVE_MINIMAL_EMUL 2002-11-10 20:59:03 +00:00
jdolecek 22ca1fc9f1 set nsysent to 512 2002-11-01 20:32:13 +00:00
jdolecek 1524c4bf08 set struct emul's nsysent to compat SYS_NSYSENT, not SYS_MAXSYSCALL 2002-11-01 19:26:21 +00:00
chs 993948e989 count executable image pages as executable for vm-usage purposes.
also, always do the VTEXT vs. v_writecount mutual exclusion
(which we previously skipped if the text or data segment was empty).
2002-10-05 22:34:02 +00:00
manu 80ee637534 - Introduce a e_fault field in struct proc to provide emulation specific
memory fault handler. IRIX uses irix_vm_fault, and all other emulation
use NULL, which means to use uvm_fault.

- While we are there, explicitely set to NULL the uninitialized fields in
struct emul: e_fault and e_sysctl on most ports

- e_fault is used by the trap handler, for now only on mips. In order to avoid
intrusive modifications in UVM, the function pointed by e_fault does not
has exactly the same protoype as uvm_fault:
int uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t, vm_prot_t));
int e_fault __P((struct proc *, vaddr_t, vm_fault_t, vm_prot_t));

- In IRIX share groups, all the VM space is shared, except one page.
This bounds us to have different VM spaces and synchronize modifications
to the VM space accross share group members. We need an IRIX specific hook
to the page fault handler in order to propagate VM space modifications
caused by page faults.
2002-09-21 21:14:54 +00:00
itojun 8dd04cdcd7 correct range check, have overflow check, fix type mismatches,
for cmap args and some other calls.  from openbsd
2002-08-03 00:12:48 +00:00
gmcgarry cb7e814f6e Fix inverted pre-processor test. 2002-08-02 08:43:09 +00:00
scw bef00d4895 m68k syscall rototill:
- Switch all m68k-based ports over to __HAVE_SYSCALL_INTERN.
 - Add systrace glue.
 - Define struct mdproc in <m68k/proc.h> instead of <machine/proc.h>.
   (They were all defined exactly the same anyway, other than a couple
   of the MDP_* flags.)
2002-07-13 08:28:40 +00:00
thorpej 011d4d5f44 Add kernel support for having userland provide the signal trampoline:
* struct sigacts gets a new sigact_sigdesc structure, which has the
  sigaction and the trampoline/version.  Version 0 means "legacy kernel
  provided trampoline".  Other versions are coordinated with machine-
  dependent code in libc.
* sigaction1() grows two more arguments -- the trampoline pointer and
  the trampoline version.
* A new __sigaction_sigtramp() system call is provided to register a
  trampoline along with a signal handler.
* The handler is no longer passed to sensig() functions.  Instead,
  sendsig() looks up the handler by peeking in the sigacts for the
  process getting the signal (since it has to look in there for the
  trampoline anyway).
* Native sendsig() functions now select the appropriate trampoline and
  its arguments based on the trampoline version in the sigacts.

Changes to libc to use the new facility will be checked in later.  Kernel
version not bumped; we will ride the 1.6C bump made recently.
2002-07-04 23:32:02 +00:00
gmcgarry d6e1e62162 sync to new ktrsyscall() interface. 2002-06-21 05:48:06 +00:00
christos ac29fb3782 make signal array handling uniform, and put signal arrays in a separate
file. This is simular to errno array handling.
2002-03-31 22:22:43 +00:00
jdolecek fc18dc8984 minor indentation fix 2002-03-24 15:03:00 +00:00
christos 381e6a7764 make the stackgap_{init,alloc} functions MP friendly (i.e. pass struct proc *
in, instead of using curproc). While there add an optional size argument to
stackgap_init.
2002-03-16 20:43:48 +00:00
lukem 2565646230 don't need <sys/types.h> when including <sys/param.h> 2001-11-15 09:47:59 +00:00
lukem dab6ef8b56 add RCSIDs (including regeneration of files as appropriate) 2001-11-13 02:07:52 +00:00
thorpej e8ee04475d - Add a new vnode flag VEXECMAP, which indicates that a vnode has
executable mappings.  Stop overloading VTEXT for this purpose (VTEXT
  also has another meaning).
- Rename vn_marktext() to vn_markexec(), and use it when executable
  mappings of a vnode are established.
- In places where we want to set VTEXT, set it in v_flag directly, rather
  than making a function call to do this (it no longer makes sense to
  use a function call, since we no longer overload VTEXT with VEXECMAP's
  meaning).

VEXECMAP suggested by Chuq Silvers.
2001-10-30 15:32:01 +00:00
jdolecek ef8abe0767 Make the setregs hook emulation-specific, rather than executable
format specific.
Struct emul has a e_setregs hook back, which points to emulation-specific
setregs function. es_setregs of struct execsw now only points to
optional executable-specific setup function (this is only used for
ECOFF).
2001-09-18 19:36:32 +00:00
wiz 08d1db8111 Fix typo in variable name. 2001-09-08 02:35:25 +00:00