Allow syscall_establish() to install new syscalls when the existing
entry-point is either sys_nomodule or sys_nosys. Update the
makesyscalls.sh script to create a const array of bits to allow
syscal

Allow syscall_establish() to install new syscalls when the existing
entry-point is either sys_nomodule or sys_nosys. Update the
makesyscalls.sh script to create a const array of bits to allow
syscall_disestablish() to properly restore the original entry-point.
Update all the initializers of struct emul to initialize the pointer
to the bit array struct emul.

XXX Regen of all files created by makesyscalls.sh will come soon,
XXX followed by a kernel version bump (since struct emul is being
XXX modified).

This commit should address PR kern/45781 and also removes the need
for the work-around for that PR in file

sys/arch/usermode/modules/syscallemu/syscallemu.c

show more ...

Remove vm86.

Pass 3.

adjust to new trace_{enter,exit} and dtrace

syscall (setcontext) can alter eax, so don't attempt to get code again from it
in order to avoid register spills.

Use lwp_getpcb() on x86 MD code, clean from struct user usage.

Provide a small inline wrapper for sysent::sy_call() and use it to store
the active syscall description in struct lwp. To be used at some future
point to prevent unloading of modules that provide sys

Provide a small inline wrapper for sysent::sy_call() and use it to store
the active syscall description in struct lwp. To be used at some future
point to prevent unloading of modules that provide syscalls, while the
syscalls are in use.

show more ...

Undo revivesa damage to userret().

Merge wrstuden-revivesa into HEAD.

Remove clause 3 and 4 from TNF licenses

- Retire SYCALL_MPSAFE. With the exceptions of darwin and irix emulations,
all system calls are now MPSAFE.
- Remove unneeded acquire/release of kernel_lock.

Make context switch + syscall counters optionally per-CPU and accumulate
in schedclock() at "about 16 hz".

Set p->p_trace_enabled in fork and whenever the controlling falgs change
instead of doing it in syscall_intern().
Note that syscall_intern() must still be called when the flags change
since many port

Set p->p_trace_enabled in fork and whenever the controlling falgs change
instead of doing it in syscall_intern().
Note that syscall_intern() must still be called when the flags change
since many ports use a different copy of the syscall entry code when
tracing is enabled.

show more ...

Remove the 'args' parameter to 'trace_exit()' it is no longer used.
Instead of passing the (un)real system call code and syscall table pointer,
just pass the number of arguments - which is what ktrac

Remove the 'args' parameter to 'trace_exit()' it is no longer used.
Instead of passing the (un)real system call code and syscall table pointer,
just pass the number of arguments - which is what ktrace really wants.
Ride forthcoming 4.99.53

show more ...

Don't pass 'curlwp' into trace_enter() and trace_exit().

Kill syscall fancy.
Optimise matching native code.

Merge newlock2 to head.

- Hold a reference to the process credentials in each struct lwp.
- Update the reference on syscall and user trap if p_cred has changed.
- Collect accounting flags in the LWP, and collate on LWP exit.

Syscall debug tracing is handled by trace_enter() / trace_exit(). Change
trace_is_enabled() to return TRUE if SYSCALL_DEBUG is defined, and g/c
all of the SYSCALL_DEBUG handling from individual syst

Syscall debug tracing is handled by trace_enter() / trace_exit(). Change
trace_is_enabled() to return TRUE if SYSCALL_DEBUG is defined, and g/c
all of the SYSCALL_DEBUG handling from individual system call dispatch
routines.

show more ...

Clean up fallout proc_is_traced_p() change:
- proc_is_traced_p() -> trace_is_enabled(), to match trace_enter() and
trace_exit().
- trace_is_enabled() becomes a real function.
- Remove unnecessary i

Clean up fallout proc_is_traced_p() change:
- proc_is_traced_p() -> trace_is_enabled(), to match trace_enter() and
trace_exit().
- trace_is_enabled() becomes a real function.
- Remove unnecessary include files from various files that used to care
about KTRACE and SYSTRACE, but do no more.

show more ...

Add a proc_is_traced_p() macro and use it, instead of copying the same code
in many places. Idea from thorpej.

make these compile w/o SYSTRACE.

implement PT_SYSCALL

merge ktrace-lwp.

Delete now unused "bad" label

PR/29607: Christian Biere systrace doesn't handle interrupted syscalls properly
Instead of jumping to the default "bad" case, jump to the error handling
switch, so that we can deal with ERESTART/EJUS

PR/29607: Christian Biere systrace doesn't handle interrupted syscalls properly
Instead of jumping to the default "bad" case, jump to the error handling
switch, so that we can deal with ERESTART/EJUSTRETURN properly.

show more ...