CVS log for src/sys/sys/ktrace.h

Up to [cvs.NetBSD.org] / src / sys / sys

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

sys/ktrace.h: fix off-by-one in snprintb for ktrace flags

There's a one-bit gap between TRC_EMUL and INHERIT.

Noticed by RVP.

sys/ktrace.h: fix off-by-one error in snprintb for ktrace flags

ktrace(9): Fix mutex detection in ktrcsw.

On _entry_ to sleepq_block, l->l_syncobj is set so that ktrcsw
(ktr_csw) has the opportunity to detect whether it's a mutex or
rwlock.  It is critical to avoid ktealloc when we're sleeping on a
mutex because we may be in softint context where ktealloc is
forbidden.

But after mi_switch, on _exit_ from sleepq_block, l->l_syncobj may
have been changed back to &sched_syncobj or something by
sleepq_remove, and so ktrcsw can no longer rely on l->l_syncobj to
determine whether we _were_ sleeping on a mutex or not.

Instead, save the syncobj in sleepq_block and pass it through as an
argument to ktrcsw.

Reported-by: syzbot+414edba9d161b7502658@syzkaller.appspotmail.com
Reported-by: syzbot+4425c97ac717b12495a2@syzkaller.appspotmail.com
Reported-by: syzbot+5812565b926ee8eb5cf3@syzkaller.appspotmail.com
Reported-by: syzbot+8b9d7b066c32dbcdc63b@syzkaller.appspotmail.com
Reported-by: syzbot+909a8e743c967d97f433@syzkaller.appspotmail.com
Reported-by: syzbot+e2a34bb5509bea0bba11@syzkaller.appspotmail.com
Reported-by: syzbot+faaea3aad6c9d0829f76@syzkaller.appspotmail.com

add format for flags.

Sync with HEAD

s/static inline/static __inline/g for consistency with other include
headers.

update from HEAD

Sync with HEAD

Allow emulations to override the creation of ktrace records for posting
signals. In compat_netbsd32 use this to write the 32bit version of
the records, so a 32bit userland kdump is happy.

Make the ktrace record written by do_sys_sendmsg/do_sys_recvmsg overridable
by the caller. Use this in compat_netbsd32 to log the 32bit version, so
the 32bit userland kdump is happy.

Sync with HEAD

PR 50633 and PR 50634 from Brad Harder: add missing includes:
sys/signal.h and sys/time.h. Also add sys/uio.h which is needed and
for some probably historical/obsolete reason has been documented as a
prerequisite instead of included directly.

This also requires sys/param.h for MAXCOMLEN (blah) but for now at
least shift that to the documentation instead of including it
directly as it's a sewer.

Sync with HEAD

Rename the two register_t uses that leaked to userland __register_t so that
they can be fixed later if we want.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

include necessary headers

Put vfs bits of ktrace into kern_ktrace_vfs.c per convention.

sync with head

sync to -current.

Remove COMPAT_SA / KERN_SA.  Welcome to 6.99.3!
Approved by core@.

Catchup with rmind-uvmplock merge.

sync with head

Sync with HEAD.

kern/42030 - tracking of file descriptors by ktrace/kdump

sync with head

Remove Mach specific trace points.

Properly pad some structures to 64bit.  A N32 ktruss on a N64 kernel now
works (this might not work for sparc/x86 if their register_t for 32bit isn't
the same size as register_t).

sync with head.

Sync with HEAD.

Sync with HEAD.

merge christos-time_t

Update haad-dm branch to haad-dm-base2.

Sync with head.

ktrgeniov: pass down to correct function.

Sync with HEAD.

Merge wrstuden-revivesa into HEAD.

Pull in the fix for PR/37534.

Re-merge ktrace upcall hooks. Still needs changes for PR 37534.

Pull up revisions:
  src/sys/kern/kern_ktrace.c	1.112.4.1
  src/sys/kern/kern_sa.c	1.87.4.9
  src/sys/sys/ktrace.h		1.45.4.1
from [wrstuden-fixsa] (requested by skrll in ticket #1121).

Pass an array pointers in kernel VM space to ktrsaupcall for it to
create the ktrace record instead of trying to access a pointer in
userland.

Fixes PR/37534.

Welcome to the time_t=long long dev_t=uint64_t branch.

sync with HEAD

Sync with HEAD.

sync with head.

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

sync with head.

KTRFAC_ROOT -> KTRFAC_PERSISTENT, and update comments.

Discussed with christos@ and yamt@.

sync with head

sync with HEAD

Pass an array pointers in kernel VM space to ktrsaupcall for it to
create the ktrace record instead of trying to access a pointer in
userland.

Fixes PR/37534.

Sync with HEAD

Sync with head.

Add a few buckets of 'const' and 'static' to the system call trace code.
sys_trace() still needs to be able to update the syscall args.

Sync with head.

Sync with HEAD.

sync with head.

Sync with HEAD.

Fix inverted test in ktrpoint(), NAMI traces weren't being generated.
Also inline the 'ktrace_on' part of the test.

Sync with HEAD.

Sync with HEAD.

Changes to make ktrace LKM friendly and reduce ifdef KTRACE. Proposed
on tech-kern.

Sync with head.

Sync with head.

Sync with head.

Add a ktrkuser() function that can be used to generate a KTR_USER trace
entry from kernel-resident data.
Mainly so I can (ab)use the KTR_USER entry for extra info.

sync with head.

Move the ktrace (and systrace) in namei() inside the retry loop for
emulation lookups.
If doing a lookup relative to the emulation root, prepend the emulation root
to the traced filename.
While here pass the filename length through to the ktrace code since namei()
knows the length and ktr_namei() would have to call strlen().
Note: that if namei() is being called during execve processing, the emulation
root name isn't available and "/emul/???" is used.  Also namei() has to use
strlen() to get the lenght on the emulatoon root - even though it is a
compile-time constant string.

sync with head.

Merge newlock2 to head.

Remove support for SA. Ok core@.

Sync with head.

sync with head.

Checkpoint work in progress.

sync with head.

Sync with head.

Pull up following revision(s) (requested by adrianp in ticket #1564):
	sys/compat/darwin/darwin_ktrace.c: revision 1.6 via patch
	sys/compat/darwin/darwin_iohidsystem.c: revision 1.35 via patch
	sys/compat/freebsd/freebsd_misc.c: revision 1.26 via patch
	sys/kern/kern_ktrace.c: revision 1.110 via patch
	sys/sys/ktrace.h: revision 1.45 via patch
make ktruser enforce the maximum buffer length, and return an error.
ktruser checks for length now.
ktruser now returns an error if the buffer length is too big.

Pull up following revision(s) (requested by adrianp in ticket #1564):
	sys/compat/darwin/darwin_ktrace.c: revision 1.6 via patch
	sys/compat/darwin/darwin_iohidsystem.c: revision 1.35 via patch
	sys/compat/freebsd/freebsd_misc.c: revision 1.26 via patch
	sys/kern/kern_ktrace.c: revision 1.110 via patch
	sys/sys/ktrace.h: revision 1.45 via patch
make ktruser enforce the maximum buffer length, and return an error.
ktruser checks for length now.
ktruser now returns an error if the buffer length is too big.

make ktruser enforce the maximum buffer length, and return an error.

sync with head

Add a -t+S flag to ktrace for tracing activity related to sysctl. MIB
names will be displayed, with data readen and written as well.

sync with head.

meet Mr. Webster.

merge ktrace-lwp.

Add ktr_ts access macro and fix a typo. From Christos.

sync with -current

sync with head.  xen and whitespace.  xen part is not finished.

Sync with HEAD.

Hi Perry!

nuke trailing whitespace

Simplify the record writing process as sizeof(struct ktr_header)
doesn't change. If it does increase in the future deal with it then.

Delete struct ktr_compat as it is not needed.

Use the gap between ktr_type and ktr_pid for a version field instead of
overloading ktr_type.

Provide a version mechanism for ktrace records and add new version that
uses struct timespec and records the lwpid.

Sync with HEAD.

Create kernel thread and let it to issue the write request.  We can't
do this from trace target process since we can't sleep at certain
trace point (otherwise system may hang).  Address PR#23155.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD.

Sync with HEAD

Pull up revision 1.39 (requested by christos in ticket #544):
  Fix a panic induced by forcing ktrace to inject an emul
  record in a ktraced file descriptor that has already been
  invalidated.  Change all ktrace functions to propagate the
  error from ktrwrite() and check for it.

Fix a panic induced by forcing ktrace to inject an emul record on
a ktraced file descriptor that has already been invalidated. Change
all ktrace functions to propagate the error from ktrwrite() and
check for it. Thanks to Pavel Cahyna for finding this and giving
a perfect bug report.

[should be pulled up for 2.0]

Make ktrwrite() and ktrinitheader() private again.  ktrsyscall32() no longer
exists.

export ktrinitheader() and ktrwrite() for ktrsyscall32(), which is used
to write 32 bit syscall arguments in a 64 bit format.

Defer writing of KTR_EMUL entry until first trace done by target process.
Stops ktrops sleeping with the pid table locked.

Enable tracing of out of line data sent with Mach message

constify sendsig/trapsignal [suggested by gimpy]

support for siginfo_t in ktrace

SA upcall support for ktrace(2) from my PR 19929.

This currently has problems when ktrwrite blocks and causes another
upcall, which causes another call to ktrsaupcall.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

Add ktrace of env and args during exec.

Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

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

ktrace rval[1] - in order to get both fd numbers for pipe()

Sync with HEAD.

Pass the system call table to trace_enter() and ktrsys() so that it is
possible to use alternate system call tables. This is usefull for
displaying correctly the arguments in Mach binaries traces.

If NULL is given, then the regular systam call table for the process is used.

Sync with HEAD.

always prototype mach message support.

Sync with HEAD.

Added support for dumping mach messages in ktrace/kdump. While we are
there, KNFify a few functions.

Fix compilation errors introduced by recent trace_enter()/ktrsyscall() changes.

Provided by FUKAUMI Naoki <naoki at fukaumi dot org> in kern/19070.

sync kqueue branch with HEAD

catch up with -current.

Catch up to -current.

Systrace support.

Sync with head (for UBC+NFS fixes, mostly).

utrace(2): limit size of user data to KTR_USER_MAXLEN (currently 2048); return EINVAL if 'len' is bigger

Sync with HEAD

add utrace(2) - this syscall allows to add user ktrace entries
idea from FreeBSD, but added argument (const char *id) so that it's possible
to differentiate between entries from different sources

add FreeBSD-compatible KTR_USER/KTRFAC_USER

Update thorpej_scsipi to -current as of a month ago

Reduce use of curproc in several places:

 - Change ktrace interface to pass in the current process, rather than
p->p_tracep, since the various ktr* function need curproc anyway.

 - Add curproc as a parameter to mi_switch() since all callers had it
handy anyway.

 - Add a second proc argument for inferior() since callers all had
curproc handy.

Also, miscellaneous cleanups in ktrace:

 - ktrace now always uses file-based, rather than vnode-based I/O
(simplifies, increases type safety); eliminate KTRFLAG_FD & KTRFAC_FD.
Do non-blocking I/O, and yield a finite number of times when receiving
EWOULDBLOCK before giving up.

 - move code duplicated between sys_fktrace and sys_ktrace into ktrace_common.

 - simplify interface to ktrwrite()

Don't truncate syscall return values on LP64 platforms.

Sync w/ -current.

* Add a comment to ktrgetheader() mentioning that ktr_len and ktr_buf are
being left uninitialized intentionally; addresses PR kern/6987.
* In ktrsysret(), initialize the unused ktr_eosys to avoid writing random junk.

Substantial signal handling changes:
* Increase the size of sigset_t to accomodate 128 signals -- adding new
  versions of sys_setprocmask(), sys_sigaction(), sys_sigpending() and
  sys_sigsuspend() to handle the changed arguments.
* Abstract the guts of sys_sigaltstack(), sys_setprocmask(), sys_sigaction(),
  sys_sigpending() and sys_sigsuspend() into separate functions, and call them
  from all the emulations rather than hard-coding everything.  (Avoids uses
  the stackgap crap for these system calls.)
* Add a new flag (p_checksig) to indicate that a process may have signals
  pending and userret() needs to do the full (slow) check.
* Eliminate SAS_ALTSTACK; it's exactly the inverse of SS_DISABLE.
* Correct emulation bugs with restoring SS_ONSTACK.
* Make the signal mask in the sigcontext always use the emulated mask format.
* Store signals internally in sigaction structures, rather than maintaining a
  bunch of little sigsets for each SA_* bit.
* Keep track of where we put the signal trampoline, rather than figuring it out
  in *_sendsig().
* Issue a warning when a non-emulated sigaction bit is observed.
* Add missing emulated signals, and a native SIGPWR (currently not used).
* Implement the `not reset when caught' semantics for relevant signals.

Note: Only code touched by the i386 port has been modified.  Other ports and
emulations need to be updated.

fktrace changes.

Merge with Lite2 + local changes

Import 4.4BSD-Lite2

Import 4.4BSD-Lite for reference

add/cleanup multiple inclusion protection.

Fix some missing/wrong prototypes so that kern/* compiles again

Added a KTR_EMUL record to be used to indicate syscall emulation changes.

KERNEL -> _KERNEL

KERNEL -> _KERNEL

syscall tracing: store code and argsize, as ints; update comments.

New RCS ID's, take two.  they're more aesthecially pleasant, and use 'NetBSD'

new standard, minimally intrusive ID format

add rcsid

add support for context switch tracing

add rcs ids as necessary, and also clean up headers

Add consistent multiple-inclusion protection.

initial import of 386bsd-0.1 sources

Initial revision