Commit Graph

260 Commits

Author SHA1 Message Date
John Baldwin
48f7957436 Update libsysdecode for getfsstat() 'flags' argument changing to 'mode'.
As a followup to r310638, update libsysdecode (and kdump) to decode the
'mode' argument to getfsstat().  sysdecode_getfsstat_flags() has been
renamed to sysdecode_getfsstat_mode() and now treats the argument as an
enumerated value rather than a mask of flags.
2017-01-03 01:39:05 +00:00
Bryan Drewery
490a8aa9a1 DIRDEPS_BUILD: Update dependencies.
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2016-11-13 00:11:30 +00:00
John Baldwin
9289f547a2 Move mksubr from kdump into libsysdecode.
Restructure this script so that it generates a header of tables instead
of a source file.  The tables are included in a flags.c source file which
provides functions to decode various system call arguments.

For functions that decode an enumeration, the function returns a pointer
to a string for known values and NULL for unknown values.

For functions that do more complex decoding (typically of a bitmask), the
function accepts a pointer to a FILE object (open_memstream() can be used
as a string builder) to which decoded values are written.  If the
function operates on a bitmask, the function returns true if any bits
were decoded or false if the entire value was valid.  Additionally, the
third argument accepts a pointer to a value to which any undecoded bits
are stored.  This pointer can be NULL if the caller doesn't care about
remaining bits.

Convert kdump over to using decoder functions from libsysdecode instead of
mksubr.  truss also uses decoders from libsysdecode instead of private
lookup tables, though lookup tables for objects not decoded by kdump remain
in truss for now.  Eventually most of these tables should move into
libsysdecode as the automated table generation approach from mksubr is
less stale than the static tables in truss.

Some changes have been made to truss and kdump output:
- The flags passed to open() are now properly decoded in that one of
  O_RDONLY, O_RDWR, O_WRONLY, or O_EXEC is always included in a decoded
  mask.
- Optional arguments to open(), openat(), and fcntl() are only printed
  in kdump if they exist (e.g. the mode is only printed for open() if
  O_CREAT is set in the flags).
- Print argument to F_GETLK/SETLK/SETLKW in kdump as a pointer, not int.
- Include all procctl() commands.
- Correctly decode pipe2() flags in truss by not assuming full
  open()-like flags with O_RDONLY, etc.
- Decode file flags passed to *chflags() as file flags (UF_* and SF_*)
  rather than as a file mode.
- Fix decoding of quotactl() commands by splitting out the two command
  components instead of assuming the raw command value matches the
  primary command component.

In addition, truss and kdump now build without triggering any warnings.
All of the sysdecode manpages now include the required headers in the
synopsis.

Reviewed by:	kib (several older versions), wblock (manpages)
MFC after:	2 months
Differential Revision:	https://reviews.freebsd.org/D7847
2016-10-17 22:37:07 +00:00
Mariusz Zaborski
a4e3fc54a0 Remove the duplicated code using Capsicum helpers.
Reviewed by:	cem, ed, bapt, emaste
Differential Revision	https://reviews.freebsd.org/D8140
2016-10-07 17:56:57 +00:00
John Baldwin
dda41f2078 Don't declare the 'temp' timeval as static. 2016-10-01 22:17:40 +00:00
John Baldwin
54b10c9e17 Use timercmp() and timersub() in kdump.
Previously, kdump used the kernel-only timervalsub() macro which required
defining _KERNEL when including <sys/time.h>.  Now, kdump uses the existing
userland API.  The timercmp() usage to check for a backwards timestamp is
also clearer and simpler than the previous code which checked the result of
the subtraction for a negative value.

While here, take advantage of the 3-arg timersub() to store the subtraction
results in a tempory timeval instead of overwriting the timestamp in the
ktrace record and then having to restore it.
2016-10-01 22:12:33 +00:00
John Baldwin
406d2926f2 Expose kernel-only errno values if _WANT_KERNEL_ERRNO is defined.
The kernel uses a few negative errno values for internal conditions
such as requesting a system call restart.  Normally these errno values
are not exposed to userland.  However, kdump needs access to these
values as some of then can be present in a ktrace system call return
record.  Previously kdump was defining _KERNEL to gain access to ehse
values, but was then having to manually declare 'errno' (and doing it
incorrectly).  Now, kdump uses _WANT_KERNEL_ERRNO instead of _KERNEL
and uses the system-provided declaration of errno.
2016-10-01 22:08:07 +00:00
John Baldwin
8dec694290 Decode arguments to truncate and ftruncate.
In particular, decode the off_t argument as a 64-bit argument to fix
decoding for 32-bit processes.
2016-10-01 22:03:41 +00:00
John Baldwin
71ed318eb4 Handle 64-bit system call arguments (off_t, id_t).
In particular, 64-bit system call arguments use up two register_t
arguments for 32-bit processes.  They must also be aligned on a 64-bit
boundary on 32-bit powerpc processes.  This fixes the decoding of
lseek(), procctl(), and wait6() arguments for 32-bit processes (both
native and via freebsd32).

Note that the ktrace system call return record only returns a single
register, so the return value of lseek is always truncated to the low
32-bits for 32-bit processes.
2016-10-01 22:01:41 +00:00
Konstantin Belousov
6bdee22607 Remove unused prototypes.
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-08-12 07:52:13 +00:00
John Baldwin
c357102c5b Remove files unused after pulling system call names from libsysdecode. 2016-08-11 05:18:09 +00:00
Konstantin Belousov
de56aee0bf Trace timeval parameters to the getitimer(2) and setitimer(2) syscalls.
Reviewed by:	jhb
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D7158
2016-07-13 14:37:58 +00:00
Enji Cooper
0e80f25894 Fix humanized decoding of struct stat with respect to .st_mtim
st_mtim was being incorrectly described as "stime=", not "mtime=". This was
introduced with the original feature commit (r176471).

MFC after: 1 week
PR: 209699
Submitted by: naddy
Sponsored by: EMC / Isilon Storage Division
2016-05-22 18:20:45 +00:00
Simon J. Gerraty
9d0fa50eed Use != 0 to be clear 2016-05-17 00:27:18 +00:00
Simon J. Gerraty
0d2181d9ac Allow -f - to read from stdin. 2016-05-17 00:08:43 +00:00
Baptiste Daroussin
eebea334c4 Print the fchmodat mode in human readable fashion
MFC after:	1 week
2016-05-03 21:27:17 +00:00
John Baldwin
6fc8053f1a Fix reporting of the CloudABI ABI in kdump.
- Advertise the word size for CloudABI ABIs via the SV_LP64 flag.  All of
  the other ABIs include either SV_ILP32 or SV_LP64.
- Fix kdump to not assume a 32-bit ABI if the ABI flags field is non-zero
  but SV_LP64 isn't set.  Instead, only assume a 32-bit ABI if SV_ILP32 is
  set and fallback to the unknown value of "00" if neither SV_LP64 nor
  SV_ILP32 is set.

Reviewed by:	kib, ed
Differential Revision:	https://reviews.freebsd.org/D5560
2016-03-09 18:38:30 +00:00
Bryan Drewery
3055a28d44 Update dependencies.
Sponsored by:	EMC / Isilon Storage Division
2016-02-26 22:14:15 +00:00
Mariusz Zaborski
c501d73c7e Convert casperd(8) daemon to the libcasper.
After calling the cap_init(3) function Casper will fork from it's original
process, using pdfork(2). Forking from a process has a lot of advantages:
1. We have the same cwd as the original process.
2. The same uid, gid and groups.
3. The same MAC labels.
4. The same descriptor table.
5. The same routing table.
6. The same umask.
7. The same cpuset(1).
From now services are also in form of libraries.
We also removed libcapsicum at all and converts existing program using Casper
to new architecture.

Discussed with:		pjd, jonathan, ed, drysdale@google.com, emaste
Partially reviewed by:	drysdale@google.com, bdrewery
Approved by:		pjd (mentor)
Differential Revision:	https://reviews.freebsd.org/D4277
2016-02-25 18:23:40 +00:00
John Baldwin
6fb8946b7f Add simple support for CloudABI processes to kdump(1).
This does not decode arguments to system calls but should properly
decode system call names and error return values.

Reviewed by:	ed
Differential Revision:	https://reviews.freebsd.org/D5412
2016-02-25 17:43:32 +00:00
Bryan Drewery
bd18fd57db DIRDEPS_BUILD: Regenerate without local dependencies.
These are no longer needed after the recent 'beforebuild: depend' changes
and hooking DIRDEPS_BUILD into a subset of FAST_DEPEND which supports
skipping 'make depend'.

Sponsored by:	EMC / Isilon Storage Division
2016-02-24 17:20:11 +00:00
John Baldwin
287b96dd25 Add handling for non-native error values to libsysdecode.
Add two new functions, sysdecode_abi_to_freebsd_errno() and
sysdecode_freebsd_to_abi_errno(), which convert errno values between
the native FreeBSD ABI and other supported ABIs. Note that the
mappings are not necessarily perfect meaning in some cases multiple
errors in one ABI might map to a single error in another ABI. In that
case, the reverse mapping will return one of the errors that maps, but
which error is non-deterministic.

Change truss to always report the raw error value to the user but
use libsysdecode to map it to a native errno value that can be used
with strerror() to generate a description. Previously truss reported
the "converted" error value. Now the user will always see the exact
error value that the application sees.

Change kdump to report the truly raw error value to the user. Previously
kdump would report the absolute value of the raw error value (so for
Linux binaries it didn't output the FreeBSD error value, but the positive
value of the Linux error). Now it reports the real (i.e. negative) error
value for Linux binaries. Also, use libsysdecode to convert the native
FreeBSD error reported in the ktrace record to the raw error used by the
ABI. This means that the Linux ABI can now be handled directly in
ktrsysret() and removes the need for linux_ktrsysret().

Reviewed by:	bdrewery, kib
Helpful notes:	wblock (manpage)
Differential Revision:	https://reviews.freebsd.org/D5314
2016-02-23 20:00:55 +00:00
Bryan Drewery
9d8a81b4e4 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	EMC / Isilon Storage Division
2016-02-16 02:14:30 +00:00
John Baldwin
5842bd683f Add a SYSDECODE_ABI_ prefix to the ABI enums to avoid potential collisions.
Suggested by:	jmallett
Reviewed by:	bdrewery, jmallett
Differential Revision:	https://reviews.freebsd.org/D5123
2016-01-30 01:00:54 +00:00
John Baldwin
a5f14abfd2 Add support to libsysdecode for decoding system call names.
A new sysdecode_syscallname() function accepts a system call code and
returns a string of the corresponding name (or NULL if the code is
unknown).  To support different process ABIs, the new function accepts a
value from a new sysdecode_abi enum as its first argument to select the
ABI in use.  Current ABIs supported include FREEBSD (native binaries),
FREEBSD32, LINUX, LINUX32, and CLOUDABI64.  Note that not all ABIs are
supported by all platforms.  In general, a given ABI is only supported
if a platform can execute binaries for that ABI.

To simplify the implementation, libsysdecode's build reuses the
existing pre-generated files from the kernel source tree rather than
duplicating new copies of said files during the build.

kdump(1) and truss(1) now use these functions to map system call
identifiers to names.  For kdump(1), a new 'syscallname()' function
consolidates duplicated code from ktrsyscall() and ktrsyscallret().
The Linux ABI no longer requires custom handling for ktrsyscall() and
linux_ktrsyscall() has been removed as a result.

Reviewed by:	bdrewery
Differential Revision:	https://reviews.freebsd.org/D4823
2016-01-26 19:07:09 +00:00
Bryan Drewery
e3ebb82118 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	EMC / Isilon Storage Division
2016-01-07 19:58:23 +00:00
John Baldwin
265e58989d Move the mkioctls script to libsysdecode and use it to generate a
sysdecode_ioctlname() function.  This function matches the behavior
of the truss variant in that it returns a pointer to a string description
for known ioctls.  The caller is responsible for displaying unknown
ioctl requests.  For kdump this meant moving the logic to handle unknown
ioctl requests out of the generated function and into an ioctlname()
function in kdump.c instead.

Differential Revision:	https://reviews.freebsd.org/D4610
2015-12-22 20:33:49 +00:00
John Baldwin
d6fb489498 Start on a new library (libsysdecode) that provides routines for decoding
system call information such as system call arguments.  Initially this
will consist of pulling duplicated code out of truss and kdump though it
may prove useful for other utilities in the future.

This commit moves the shared utrace(2) record parser out of kdump into
the library and updates kdump and truss to use it.  One difference from
the previous version is that the library version treats unknown events
that start with the "RTLD" signature as unknown events.  This simplifies
the interface and allows the consumer to decide how to handle all
non-recognized events.  Instead, this function only generates a string
description for known malloc() and RTLD records.

Reviewed by:	bdrewery
Differential Revision:	https://reviews.freebsd.org/D4537
2015-12-15 00:05:07 +00:00
Bryan Drewery
114350b9de Replace DPSRCS that work fine in SRCS.
This is so that 'make depend' is not a required build step in these
files.

DPSRCS is overall unneeded.  DPSRCS already contains SRCS, so anything
which can safely be in SRCS should be.  DPSRCS is mostly just a way to
generate files that should not be linked into the final PROG/LIB.  For
headers and grammars it is safe for them to be in SRCS since they will
be excluded during linking and installation.

The only remaining uses of DPSRCS are for generating .c or .o files that
must be built before 'make depend' can run 'mkdep' on the SRCS c files
list.  A semi-proper example is in tests/sys/kern/acct/Makefile where a
checked-in .c file has an #include on a generated .c file.  The
generated .c file should not be linked into the final PROG though since
it is #include'd.  The more proper way here is just to build/link it in
though without DPSRCS.  Another example is in sys/modules/linux/Makefile
where a shell script runs to parse a DPSRCS .o file that should not be
linked into the module.  Beyond those, the need for DPSRCS is largely
unneeded, redundant, and forces 'make depend' to be ran.  Generally,
these Makefiles should avoid the need for DPSRCS and define proper
dependencies for their files as well.

An example of an improper usage and why this matters is in usr.bin/netstat.
nl_defs.h was only in DPSRCS and so was not generated during 'make all',
but only during 'make depend'.  The files including it lacked proper
depenencies on it, which forced running 'make depend' to workaround that
bug.  The 'make depend' target should mostly be used for incremental build
help, not to produce a working build.  This specific example was broken in
the meta build until r287905 since it does not run 'make depend'.

The gnu/lib/libreadline/readline case is fine since bsd.lib.mk has 'OBJS:
SRCS:M*.h' when there is no .depend file.

Sponsored by:	EMC / Isilon Storage Division
MFC after:	1 week
2015-11-25 20:38:17 +00:00
Bryan Drewery
195aef9962 truss: Add support for utrace(2).
This uses the kdump(1) utrace support code directly until a common library
is created.

This allows malloc(3) tracing with MALLOC_CONF=utrace:true and rtld tracing
with LD_UTRACE=1.  Unknown utrace(2) data is just printed as hex.

PR:		43819 [inspired by]
Reviewed by:	jhb
MFC after:	2 weeks
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D3819
2015-10-06 21:58:38 +00:00
Mariusz Zaborski
c36e54bb32 Let the nv.h and dnv.h includes be only in sys directory.
Change consumers to include those files from sys.
Add duplicated files to ObsoleteFiles.

Approved by:	pjd (mentor)
2015-07-02 21:58:10 +00:00
Simon J. Gerraty
2ef6d5a7b9 new depends 2015-06-16 23:37:19 +00:00
Craig Rodrigues
9d6690e038 Add ioctl.c, linux_syscalls.c, linux32_syscalls.c to beforedepend target.
These files need to be generated before mkdep is run.
2015-06-15 06:48:43 +00:00
Craig Rodrigues
dc7fc2cad8 Use cpp -I$includedir
"cpp -I$1" was expanding to "cpp -Iprint"
which was not the proper directory
of header files.
2015-06-15 06:44:22 +00:00
Simon J. Gerraty
e19b02fbf6 Create proper targets for linux*syscalls.c 2015-06-14 03:30:39 +00:00
Simon J. Gerraty
ccfb965433 Add META_MODE support.
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp
2015-06-13 19:20:56 +00:00
Simon J. Gerraty
bd831db65c Misc fixes from projects/bmake
Differential Revision:       D2748
Reviewed by: brooks imp
2015-06-11 21:13:05 +00:00
Simon J. Gerraty
728d82cdd2 Use INCLUDEDIR rather than hard coded /usr/include
Differential Revision:	D2748
Reviewed by:	brooks imp
2015-06-11 14:25:53 +00:00
Simon J. Gerraty
44d314f704 dirdeps.mk now sets DEP_RELDIR 2015-06-08 23:35:17 +00:00
Simon J. Gerraty
98e0ffaefb Merge sync of head 2015-05-27 01:19:58 +00:00
Dmitry Chagin
c64979dc7e Teach kdump to understand both linux emulation.
Differential Revision:	https://reviews.freebsd.org/D1079
Reviewed by:	emaste
2015-05-24 16:22:03 +00:00
Brooks Davis
5743dcb3c2 Remove "capability mode sandbox enabled" messages.
These messages serve little purpose and break some consumers.

PR:		199855
Differential Revision:	https://reviews.freebsd.org/D2440
Reviewed by:	rwatson
Approved by:	pjd
MFC after:	1 week
Sponsored by:	DARPA, AFRL
2015-05-04 21:44:51 +00:00
Maxim Sobolev
da551bb2c2 o Properly init prevtime, so that we don't print bogus value in the
first entry reported by the relative mode (-R).

o Properly print negative offsets, which I guess may happen if
records get re-ordered somehow, possibly due to the locking. Right
now we report huge bogus diff (i.e. 2 seconds or so).
2015-04-25 04:58:08 +00:00
Gleb Smirnoff
56d5e0967c Stop including if_var.h from userland.
Sponsored by:	Nginx, Inc.
2015-04-06 09:42:23 +00:00
Sergey Kandaurov
723ea6bc93 kdump: sendfile(2) "flags" argument needs casting on 64-bit platforms.
MFC after:	1 week
Sponsored by:	Nginx, Inc.
2015-02-16 17:19:28 +00:00
Dag-Erling Smørgrav
4ac1e0a9fc Allow tracing dlfunc() / dlsym() events.
MFC after:	1 week
2015-01-25 12:11:50 +00:00
Jilles Tjoelker
2205e0d1bd Add futimens and utimensat system calls.
The core kernel part is patch file utimes.2008.4.diff from
pluknet@FreeBSD.org. I updated the code for API changes, added the manual
page and added compatibility code for old kernels. There is also audit and
Capsicum support.

A new UTIME_* constant might allow setting birthtimes in future.

Differential Revision:	https://reviews.freebsd.org/D1426
Submitted by:	pluknet (partially)
Reviewed by:	delphij, pluknet, rwatson
Relnotes:	yes
2015-01-23 21:07:08 +00:00
Dmitry Chagin
78ec874dd3 kdump: eliminate new clang warnings.
MFC after:	1 week
2015-01-06 18:53:09 +00:00
Baptiste Daroussin
3e11bd9e2a Convert to usr.bin/ to LIBADD
Reduce overlinking
2014-11-25 14:29:10 +00:00
Simon J. Gerraty
9268022b74 Merge from head@274682 2014-11-19 01:07:58 +00:00