Commit Graph

31 Commits

Author SHA1 Message Date
Mark Johnston
fd8b318ab6 Correct the calculation of tcps_rto in the struct tcpcb -> tcpsinfo_t
translator.

Submitted by:	Grenville Armitage <garmitage@swin.edu.au>
MFC after:	1 week
2014-10-21 05:19:08 +00:00
George V. Neville-Neil
bd537a28cc Update the TCP structure used by DTrace to show the smoothed RTT.
This will allow similar functionality to SIFTR to be built with DTrace.

Submitted by:	Grenville Armitage
MFC after:	2 weeks
2014-10-19 23:13:16 +00:00
Mark Johnston
41da933c87 Hook up support for userland CTF support in DTrace. This required some
modifications to libproc to support fetching the CTF info for a given file.

With this change, dtrace(1) is able to resolve type info for function and
USDT probe arguments, and function return values. In particular, the args[n]
syntax should now work for referencing arguments of userland probes,
provided that the requisite CTF info is available.

The uctf tests pass if the test programs are compiled with CTF info. The
current infrastructure around the DTrace test suite doesn't support this
yet.

Differential Revision:	https://reviews.freebsd.org/D891
MFC after:		1 month
Relnotes:		yes
Sponsored by:		EMC / Isilon Storage Division
2014-10-03 23:20:37 +00:00
Xin LI
4ddb46f694 Make DTrace stuff compile with C99 standard. 2014-08-22 20:04:51 +00:00
Rui Paulo
09779aae33 Add stubs for CTF functions which are not yet implemented.
MFC after:	2 weeks
2014-06-26 22:38:06 +00:00
Mark Johnston
2f28ceeb34 Bind ip/tcp/udp provider translators and symbols to the same versions as in
illumos, rather than using "1.0" everywhere.

Some of the translators use D functions that are not present in version
1.0 (e.g. inet_ntoa()) which can result in libdtrace crashing when running
scripts that restrict themselves to version 1.0
(e.g. with "-x version=1.0").

MFC after:	1 week
2014-05-14 19:02:00 +00:00
Mark Johnston
604457091d Remove a duplicate definition.
MFC after:	3 days
2014-05-04 03:37:39 +00:00
Mark Johnston
0339a1c2b4 Move some files that are identical on i386 and amd64 to an x86 subdirectory
rather than keeping duplicate copies.

Discussed with:	avg
MFC after:	1 week
2014-02-27 01:04:35 +00:00
Mark Johnston
e572bc11ec Add a function, memstr, which can be used to convert a buffer of
null-separated strings to a single string. This can be used to print the
full arguments of a process using execsnoop (from the DTrace toolkit) or
with the following one-liner:

dtrace -n 'syscall::execve:return {trace(curpsinfo->pr_psargs);}'

Note that this relies on the process arguments being cached via the struct
proc, which means that it will not work for argvs longer than
kern.ps_arg_cache_limit. However, the following rather non-portable
script can be used to extract any argv at exec time:

fbt::kern_execve:entry
{
    printf("%s", memstr(args[1]->begin_argv, ' ',
        args[1]->begin_envv - args[1]->begin_argv));
}

The debug.dtrace.memstr_max sysctl limits the maximum argument size to
memstr(). Thanks to Brendan Gregg for helpful comments on freebsd-dtrace.

Tested by:	Fabian Keil (earlier version)
MFC after:	2 weeks
2013-10-16 01:39:26 +00:00
Mark Johnston
8298c17c6c Add a separate translator for headers passed to the TCP probes in the
input path. These probes get some of the fields in host order, whereas the
output probes get them in network order, so a single translator isn't
enough. This workaround ensures that the problem is essentially invisble
to users: none of the probe arguments or their fields have changed.

Approved by:	re (hrs)
2013-10-02 17:14:12 +00:00
Mark Johnston
9feec372db Use the address of the inpcb rather than the tcpcb to identify TCP
connections. This keeps the tcp provider consistent with the other network
providers.

Approved by:	re (delphij)
2013-09-15 21:38:46 +00:00
Mark Johnston
57f6086735 Implement the ip, tcp, and udp DTrace providers. The probe definitions use
dynamic translation so that their arguments match the definitions for
these providers in Solaris and illumos. Thus, existing scripts for these
providers should work unmodified on FreeBSD.

Tested by:	gnn, hiren
MFC after:	1 month
2013-08-25 21:54:41 +00:00
Mark Johnston
09e6105ff4 Bring back part of r249367 by adding DTrace's temporal option, which allows
users to guarantee that the output of DTrace scripts will be time-ordered.
This option is enabled by adding the line

  #pragma D option temporal

to the beginning of a script, or by adding '-x temporal' to the arguments of
dtrace(1).

This change fixes a bug in the original port of the temporal option. This
bug was causing some assertions to fail, so they had been disabled; in this
revision the assertions are working properly and are enabled.

The DTrace version number has been bumped from 1.9.0 to 1.9.1 to reflect
the language change that's being introduced.

This change corresponds to part of illumos-gate commit e5803b76927480:
  3021 option for time-ordered output from dtrace(1M)

Reviewed by:	pfg
Obtained from:	illumos
MFC after:	1 month
2013-05-12 16:26:33 +00:00
Pedro F. Giffuni
195ce43708 DTrace: NFS translators should be split into client/server pieces
Belatedly update the provider with changes from OpenSolaris:

PSARC 2008/050 DTrace NFS v3 Provider
6696397 NFS v3 provider reports all UDP clients as 0.0.0.0
6711844 assert: vp->v_shrlocks

Obtained from:	Illumos
2013-04-18 01:20:08 +00:00
Pedro F. Giffuni
03836978be DTrace: Revert r249367
The following change from illumos brought caused DTrace to
pause in an interactive environment:

3026 libdtrace should set LD_NOLAZYLOAD=1 to help the pid provider

This was not detected during testing because it doesn't
affect scripts.

We shouldn't be changing the environment, especially since the
LD_NOLAZYLOAD option doesn't apply to our (GNU) ld.
Unfortunately the change from upstream was made in such a way
that it is very difficult to separate this change from the
others so, at least for now, it's better to just revert
everything.

Reference:
https://www.illumos.org/issues/3026

Reported by:	Navdeep Parhar and Mark Johnston
2013-04-17 02:20:17 +00:00
Pedro F. Giffuni
98aff789ce DTrace: NFS translators should be split into client/server pieces
Merge change from illumos:

1731 DTrace NFS translators should be split into client/server pieces

Illumos Revision:	13523:6763769941d2

This code seems to be currently unused on FreeBSD.

Reference:
https://www.illumos.org/issues/1731

Obtained from:	Illumos
MFC after:	1 week
2013-04-15 20:16:31 +00:00
Pedro F. Giffuni
ddd5b8e9b4 DTrace: option for time-ordered output
Merge changes from illumos:

3021 option for time-ordered output from dtrace(1M)
3022 DTrace: keys should not affect the sort order when sorting by value
3023 it should be possible to dereference dynamic variables
3024 D integer narrowing needs some work
3025 register leak in D code generation
3026 libdtrace should set LD_NOLAZYLOAD=1 to help the pid provider

This brings yet another feature implemented in upstream DTrace.
A complete description is available here:
http://dtrace.org/blogs/ahl/2012/07/28/my-new-dtrace-favorite/

This change bumps the DT_VERS_* number to 1.9.1 in
accordance to what is done in illumos.

This change was somewhat complicated because upstream is mixed many
changes in an individual commit and some of the tests don't really
apply to us.

There are also appear to be differences in timestamping with Solaris
so we had to workaround some assertions making sure no regression
happened.

Special thanks to Fabian Keil for changes and testing.

Illumos Revisions:	13758:23432da34147

Reference:
https://www.illumos.org/issues/3021
https://www.illumos.org/issues/3022
https://www.illumos.org/issues/3023
https://www.illumos.org/issues/3024
https://www.illumos.org/issues/3025
https://www.illumos.org/issues/1694

Tested by:	Fabian Keil
Obtained from:	Illumos
MFC after:	1 months
2013-04-11 16:24:36 +00:00
George V. Neville-Neil
02b3906712 Revert previous change in favor of a fix to the actual dtrace
libraries that addresses a #pragma issue.
2013-03-28 20:22:43 +00:00
George V. Neville-Neil
3e3d9dcd39 Remove dependency code that caused a double inclusion.
Pointed out by: rpaulo and others
2013-03-28 20:12:46 +00:00
Pedro F. Giffuni
5472787377 Dtrace: Add SUN MDB-like type-aware print() action.
Merge change from illumos:

1694 Add type-aware print() action

This is a very nice feature implemented in upstream Dtrace.
A complete description is available here:
http://dtrace.org/blogs/eschrock/2011/10/26/your-mdb-fell-into-my-dtrace/

This change bumps the DT_VERS_* number to 1.9.0 in
accordance to what is done in illumos.

While here also include some minor cleanups to ease further merging
and appease clang with a fix by Fabian Keil.

Illumos Revisions:	13501:c3a7090dbc16
			13483:f413e6c5d297

Reference:
https://www.illumos.org/issues/1560
https://www.illumos.org/issues/1694

Tested by:	Fabian Keil
Obtained from:	Illumos
MFC after:	1 month
2013-03-25 20:38:09 +00:00
Brooks Davis
afd9b4631f Add a new LIBRARIES_ONLY make variable to disable the build and install
of files other than the actual libraries.

Use LIBRARIES_ONLY to supress the inclusion of files in the lib32
distribution that are duplicates of files in base.

Sponsored by:	DARPA, AFRL
Reviewed by:	emaste
2013-01-17 17:27:10 +00:00
Justin Hibbits
c757049235 Implement DTrace for PowerPC. This includes both 32-bit and 64-bit.
There is one known issue:  Some probes will display an error message along the
lines of:  "Invalid address (0)"

I tested this with both a simple dtrace probe and dtruss on a few different
binaries on 32-bit.  I only compiled 64-bit, did not run it, but I don't expect
problems without the modules loaded.  Volunteers are welcome.

MFC after:	1 month
2012-11-07 23:45:09 +00:00
Rui Paulo
e04dfc407c Finish porting execsnoop to FreeBSD. This includes replacing the zonename
with a jail ID and removing the project ID from the list of options.
2012-09-01 08:14:21 +00:00
George V. Neville-Neil
3fac94ba94 Initial commit of an I/O provider for DTrace on FreeBSD.
These probes are most useful when looking into the structures
they provide, which are listed in io.d.  For example:

dtrace -n 'io:genunix::start { printf("%d\n", args[0]->bio_bcount); }'

Note that the I/O systems in FreeBSD and Solaris/Illumos are sufficiently
different that there is not a 1:1 mapping from scripts that work
with one to the other.
MFC after:	1 month
2012-07-11 16:27:02 +00:00
George V. Neville-Neil
c5069a4756 Add DTrace's io.d, which handles tranlsations for file, buffer and
device info structures as well as the fds[] array.  This is a raw
version of the file, unmodified, to be used as a baseline.
2012-06-05 18:58:05 +00:00
Oleksandr Tymoshenko
457c7edfbd Enable build of DTrace-related userland parts for MIPS 2012-03-24 05:29:07 +00:00
Warner Losh
25faff346c MFtbemd:
Prefer MACHNE_CPUARCH to MACHINE_ARCH in most contexts where you want
to test of all the CPUs of a given family conform.
2010-08-23 22:24:11 +00:00
Rui Paulo
0f2bd1e89d Add libdtrace support for tracing userland programs.
Summary of changes:
* Implement a compatibility shim between Solaris libproc and our
libproc and remove several ifdefs because of this.
* Port the drti to FreeBSD.
* Implement the missing DOODAD sections
* Link with libproc and librtld_db
* Support for ustack, jstack and uregs (by sson@)
* Misc bugfixing

When writing the SUWN_dof section, we had to resort to building the ELF
file layout by "hand". This is the job of libelf, but our libelf doesn't
support this yet. When libelf is fixed, we can remove the code under
#ifdef BROKEN_LIBELF.

Sponsored by:	The FreeBSD Foundation
2010-08-21 11:50:53 +00:00
Ulrich Spörlein
4ef20db290 Remove manual .includes in cddl Makefiles
- Break the dependency on ../Makefile.inc for .PATH, and include
  ../Makefile.inc implicitly. This is required to ...
- Set WARNS?=6 in top-level Makefile.inc
- Remove now redundant WARNS settings, add WARNS?=0 where appropriate
- Remove redundant SHLIB_MAJOR overrides
- Use NO_MAN, not MK_MAN=no
- Remove redundant inclusion of bsd.own.mk
- Order Makefiles more according to style.Makefile(9)
- Reduce diff of cddl Makefiles against each other

No objection:	pjd
Approved by:	ed (co-mentor)
2010-03-02 19:04:07 +00:00
Ken Smith
3ca3047aee Bump the version of all non-symbol-versioned shared libraries in
preparation for 8.0-RELEASE.  Add the previous version of those
libraries to ObsoleteFiles.inc and bump __FreeBSD_Version.

Reviewed by:    kib
Approved by:    re (rwatson)
2009-07-19 17:25:24 +00:00
John Birrell
ebe86aacbe Add the DTrace libraries and D library scripts. 2008-05-22 04:26:42 +00:00