Commit Graph

7522 Commits

Author SHA1 Message Date
Dimitry Andric
f8496407cb Merge llvm, clang, compiler-rt, libc++, lld and lldb release_40 branch
r292951, and update build glue.
2017-01-24 19:56:22 +00:00
Dimitry Andric
b1c1e77a87 Pull in r292833 from upstream libc++ trunk (by Eric Fiselier):
Manually force the use of __decltype in C++03 with Clang 3.4.

  <string> uses `decltype` in a way incompatible with `__typeof__`.
  This is problematic when compiling <string> with Clang 3.4 because
  even though it provides `__decltype` libc++ still used `__typeof__`
  because clang 3.4 doesn't provide __is_identifier which libc++
  uses to detect __decltype.

  This patch manually detects Clang 3.4 and properly configures
  for it.

This allows the graphics/openshadinglanguage port to build with
lang/clang34.

PR:		216054
2017-01-23 23:20:00 +00:00
Dimitry Andric
f23c525c9b Pull in r292830 from upstream libc++ trunk (by Eric Fiselier):
Fix GCC C++03 build by hiding default template argument in C++03

This allows the graphics/GraphicsMagic to compile with gcc 4.9 and
libc++.

PR:		216404
2017-01-23 22:10:57 +00:00
Dimitry Andric
e353c0d2f9 Pull in r292758 from upstream llvm trunk (by Sanjay Patel):
[x86] avoid crashing with illegal vector type (PR31672)

  https://llvm.org/bugs/show_bug.cgi?id=31672

This fixes an assertion while building graphics/gegl3.

PR:		216166
2017-01-22 18:31:49 +00:00
Dimitry Andric
daf78e69a8 Merge libc++ release_40 branch r292732. 2017-01-22 18:06:21 +00:00
Dimitry Andric
94c53d4054 Merge llvm, clang, lld and lldb release_40 branch 292732, and update
build glue.
2017-01-22 18:02:44 +00:00
Dimitry Andric
a4aa656aa5 Merge ^/head r312309 through r312623. 2017-01-22 16:05:13 +00:00
Baptiste Daroussin
7666f5006c Import mandoc cvs snapshot 20170121 (pre 1.14)
Note that mandoc does not use anymore sqlite3 but a home made database format
An important improvement has been made as well in makewhatis performance:
Tests on my laptop shows makewhatis on the entire system goes from 26s to 12s
2017-01-21 13:17:25 +00:00
Enji Cooper
4421971444 Add back #else block accidentally removed in r312145
This fixes the build with !(amd64|arm64|mips*)
2017-01-18 09:46:02 +00:00
Enji Cooper
5f761d3c88 Merge ^/vendor/NetBSD/tests/dist@r312370 2017-01-18 05:36:09 +00:00
Xin LI
ca6e7a016c MFV r312333: zlib 1.2.11.
MFC after:	1 month
2017-01-17 05:55:47 +00:00
Xin LI
850069632c Vendor import of zlib 1.2.11. 2017-01-17 05:47:05 +00:00
Gleb Smirnoff
1897a4f168 Fix regression from r310655, which broke operation of bsnmpd if it is bound
to a non-wildcard address.  As documented in ip(4), doing sendmsg(2) with
IP_SENDSRCADDR on a socket that is bound to non-wildcard address is
completely different to using this control message on a wildcard one.

A fix is to add a bool to mark whether we did setsockopt(IP_RECVDSTADDR)
on the socket, and use IP_SENDSRCADDR control message only if we did.

While here, garbage collect absolutely useless udp_recv() function that
establishes some structures on stack to never use them later.
2017-01-17 03:52:57 +00:00
Enji Cooper
6fa647788e Reintroduce libutil.h #include for FreeBSD only for fparseln 2017-01-16 20:46:40 +00:00
Dimitry Andric
9b1870035a Pull in r292133 from upstream llvm trunk (by Hal Finkel):
Fix use-after-free bug in AffectedValueCallbackVH::allUsesReplacedWith

  When transferring affected values in the cache from an old value,
  identified by the value of the current callback, to the specified new
  value we might need to insert a new entry into the DenseMap which
  constitutes the cache. Doing so might delete the current callback
  object. Move the copying logic into a new function, a member of the
  assumption cache itself, so that we don't run into UB should the
  callback handle itself be removed mid-copy.

  Differential Revision: https://reviews.llvm.org/D28749

This should fix crashes when building lld (as part of the llvmXY ports).

Reported by:	jbeich
PR:		216117
2017-01-16 19:53:18 +00:00
Enji Cooper
f115a1c3e0 Remove explicit pthread_np.h #include, per change in libnetbsd@r312303 2017-01-16 18:52:05 +00:00
Enji Cooper
ea498175b9 Diff reduce with upstream and prep for next set of content pushes 2017-01-16 18:44:40 +00:00
Enji Cooper
4acf8d706e Diff reduce with upstream by using macros and logic integrated in
later revisions of the test
2017-01-16 18:36:38 +00:00
Enji Cooper
39a3103b41 Use sys/param.h instead of sys/types.h to prep for upstreaming to NetBSD 2017-01-16 18:17:53 +00:00
Enji Cooper
e2a4e9c682 Remove unnecessary whitespace diff 2017-01-16 18:04:14 +00:00
Enji Cooper
183ae521e5 Use _SED instead of hacking tests rewriting mknod ... p as mkfifo
Similar to r312297
2017-01-16 17:53:58 +00:00
Enji Cooper
267f10b14c Use _SED to rewrite mknod ... p command as mkfifo instead of
adding an unnecessary diff to the test
2017-01-16 17:49:53 +00:00
Enji Cooper
3b0a9131e6 Merge ^/vendor/NetBSD/tests/dist@r312294
This includes a number of accepted upstream fixes, as well as
a reimplementation of the net/carp/... testcase (which is
currently unused).
2017-01-16 17:43:43 +00:00
Enji Cooper
89964aab17 Add GLOB_STAR #ifdef to testcases which require GLOB_STAR support 2017-01-16 07:41:39 +00:00
Enji Cooper
f467f63cbb Remove sys/param.h
It was used for nitems, but I converted it to __arraycount later, and
is already pulled in by header pollution on FreeBSD as well as NetBSD
ala sys/cdefs.h
2017-01-16 07:39:08 +00:00
Enji Cooper
5ca8558309 Drop unnecessary diff rewriting dict(..) function
This is already being properly handled via ATF config require.files call
2017-01-16 07:34:45 +00:00
Enji Cooper
6a93de28a6 Diff reduce with upstream and consolidate #ifdefs where possible 2017-01-15 22:00:59 +00:00
Enji Cooper
bfb8e4c9c4 Remove libutil.h #include on FreeBSD and instead favor stdio.h from libnetbsd 2017-01-15 21:38:19 +00:00
Enji Cooper
caeb04e465 lib/libc/gen/t_glob.c: diff reduce with NetBSD's copy 2017-01-15 10:17:15 +00:00
Enji Cooper
f40f3adc42 Pull in ^/vendor/NetBSD/tests/dist@r312219
Remove divergence with upstream where possible
2017-01-15 10:04:20 +00:00
Dimitry Andric
fb20e17e5a Pull in r292032 from upstream llvm trunk (by Yaron Keren):
Fix PR31644 introduced by r287138 and add a regression test.
  Thanks Dimitry Andric for the report and fix!

This should restore -MP output to what it was before.

Reported by:	jbeich
PR:		216043
2017-01-15 01:34:07 +00:00
Dimitry Andric
d370fd1cd8 Merge ^/head r311940 through r312200. 2017-01-14 22:20:12 +00:00
Dimitry Andric
7a848d17e7 Merge libc++ release_40 branch r292009. 2017-01-14 22:17:12 +00:00
Dimitry Andric
6313c2ae8d Merge compiler-rt release_40 branch r292009. 2017-01-14 22:16:01 +00:00
Dimitry Andric
f1a29dd344 Merge llvm, clang, lld and lldb release_40 branch r292009. Also update
build glue.
2017-01-14 22:12:13 +00:00
Enji Cooper
83e891f222 Revert t_pow@r312154
This hunk hasn't been accepted yet
2017-01-14 10:10:49 +00:00
Enji Cooper
1f6a3aa8e5 Fix the build using hunks pending upstream contributions 2017-01-14 10:08:22 +00:00
Enji Cooper
e0940c61c2 Diff reduce with upstream post-accepted contributions 2017-01-14 10:05:26 +00:00
Enji Cooper
81e7d81dc3 One more sys/types.h kevent clarification missed in r312151 2017-01-14 09:47:06 +00:00
Enji Cooper
ecab856bc9 Clarify why sys/types.h #include is needed on FreeBSD 2017-01-14 09:45:46 +00:00
Enji Cooper
c8300756f2 Use cleanup routines to remove POSIX semaphores instead of just blindly
unlinking them at the beginning of the testcase

This is a lot more intelligent in cleaning up the semaphores if the testcase
fails before sem_unlink is called.

Contributed back as bin/51872 upstream.
2017-01-14 09:42:06 +00:00
Enji Cooper
2a1440c618 Diff reduce with upstream by taking diff hunks that were contributed back 2017-01-14 09:38:40 +00:00
Enji Cooper
9f30f6b7c3 Readd the CMSG_DATA for assigning the kqueue... this testcase isn't officially
correct yet, but it's getting closer.
2017-01-14 09:25:09 +00:00
Enji Cooper
25785590d5 Remove extra EVSET I added in r312146 by accident 2017-01-14 09:21:36 +00:00
Enji Cooper
a41b7cf58e Diff reduce with upstream
Use CMSG_FIRSTHDR macro to properly link the kqueue to the socket to
get it to now return -1/EBADF with sendmsg per the testcase expectations
2017-01-14 09:20:54 +00:00
Enji Cooper
7bb9bc9cc2 Try to consolidate the #ifdef soup into FreeBSD vs non-FreeBSD blocks better 2017-01-14 08:47:00 +00:00
Enji Cooper
0e6a2253dc Diff reduce with upstream 2017-01-14 08:39:53 +00:00
Enji Cooper
6e515978dd Remove comment no longer true since the test no longer bombs out earlier on 2017-01-14 08:38:21 +00:00
Enji Cooper
04f40d86db Diff reduce with upstream 2017-01-14 08:36:43 +00:00
Enji Cooper
50e474a4f6 :strtold_nan: remove unnecessary strcmp check
It gets checked again later on in the testcase
2017-01-14 08:35:29 +00:00
Enji Cooper
1081817ad5 Diff reduce with upstream 2017-01-14 08:12:57 +00:00
Enji Cooper
154be35857 Use copy of sha2.h from libnetbsd 2017-01-14 08:11:17 +00:00
Enji Cooper
0e3f47800f Restore deleted line 2017-01-14 07:59:33 +00:00
Enji Cooper
1cb4521644 Diff reduce with upstream using lib/libnetbsd's updated copy of sha1.h 2017-01-14 07:58:40 +00:00
Enji Cooper
9a62e988b3 r312133 should have used the non-FreeBSD block 2017-01-14 07:50:29 +00:00
Enji Cooper
4e9c68081e Diff reduce with upstream by using util.h from libnetbsd instead of libutil.h 2017-01-14 07:48:22 +00:00
Enji Cooper
3b85282333 Diff reduce with upstream 2017-01-14 07:39:07 +00:00
Enji Cooper
88dd6cd01d Copy ^/vendor/NetBSD/tests/dist/lib/libc/hash/t_hmac.c to
contrib/netbsd-tests/lib/libc/hash/t_hmac.c

This was missed in r303980
2017-01-14 07:16:15 +00:00
Enji Cooper
8eace6ac0f Try again with a better commit message 2017-01-14 07:15:14 +00:00
Enji Cooper
519b4f22b0 Copy ^/vendor/NetBSD/tests/dist to contrib/netbsd-tests
This was missed in r303980
2017-01-14 07:14:25 +00:00
Enji Cooper
63d1fd5970 Merge content currently under test from ^/vendor/NetBSD/tests/dist/@r312123
Sponsored by:	Dell EMC Isilon
2017-01-14 06:49:17 +00:00
Enji Cooper
792bbaba98 Remove contrib/netbsd-tests/fs/nfs/nfsservice/rpcbind
This should have been pruned in r305358

MFC after:	3 days
Sponsored by:	Dell EMC Isilon
2017-01-14 06:16:57 +00:00
Enji Cooper
36b9e15c66 Delete trailing whitespace and use __arraycount instead of nitems in contrib code
MFC after:	1 week
2017-01-14 03:54:23 +00:00
Enji Cooper
a5deb9babb Note that sys/types.h is required on FreeBSD for kqueue(2), unlike NetBSD
MFC after:	12 days
X-MFC with:	r305358
Sponsored by:	Dell EMC Isilon
2017-01-14 01:01:02 +00:00
Enji Cooper
cdebaff820 Upgrade NetBSD tests to 01.11.2017_23.20 snapshot
This contains some new testcases in /usr/tests/...:

- .../lib/libc
- .../lib/libthr
- .../lib/msun
- .../sys/kern

Tested on:	amd64, i386
MFC after:	1 month
2017-01-13 03:33:57 +00:00
Enji Cooper
9527fa4f66 Remove __HAVE_LONG_DOUBLE #define from t_strtod.c and place it in Makefile
This is to enable support in other testcases

Inspired by lib/msun/tests/Makefile .

MFC after:	1 week
2017-01-12 08:40:52 +00:00
Enji Cooper
35cfc322f1 Fix lib/libc/sys/access_test after r311925
sys/param.h needs to be #included in order for __FreeBSD_version to be checked

MFC after:	13 days
2017-01-12 08:31:42 +00:00
Ed Maste
c83bcfbd2e readelf: add S390 relocation types
From https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries.html

Reviewed by:	bz
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D9149
2017-01-11 22:54:04 +00:00
Ed Maste
0fbbe5bf87 readelf: add more PPC64 relocation types found in LLVM
MFC after:	2 weeks
MFC with:	r311941
Sponsored by:	The FreeBSD Foundation
2017-01-11 21:28:22 +00:00
Ed Maste
dd9d62b416 readelf: add PPC64 relocation types
Reported by:	Mark Millard
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D9146
2017-01-11 21:18:14 +00:00
Dimitry Andric
8a6fe8ce60 Merge ^/head r311812 through r311939. 2017-01-11 21:05:13 +00:00
Enji Cooper
bccef7f6d9 Consolidate __NetBSD__ #ifdef
MFC after:	3 days
2017-01-11 10:20:35 +00:00
Enji Cooper
ddba0402f4 Import testcase updates with code contributed back to NetBSD
This also (inadvertently) contains an update to
contrib/netbsd-tests/lib/libc/sys/t_wait.c (new testcases).

MFC after:		2 weeks
In collaboration with:	christos@NetBSD.org
2017-01-11 09:51:34 +00:00
Enji Cooper
d1a6b5fb2f Fix whitespace in comment
MFC after:	3 days
2017-01-11 09:34:42 +00:00
Enji Cooper
0e0dd02306 Partially revert r311236
There's no sense in trying to close a file descriptor from the negative cases
with unlink_test; it's best to ignore these cases.

The mkfifo case does make sense to keep though.

MFC after:	3 days
2017-01-11 07:22:21 +00:00
Enji Cooper
19f27f3c34 Fix up r311227
Check for creat returning a value != -1, not a non-zero value

MFC after:	3 days
Pointyhat to:	ngie
Reported by:	Coverity
CID:		1368366
2017-01-11 07:17:03 +00:00
Martin Matuska
2dbf8c4a76 MFV r311899:
Sync libarchive with vendor.

Vendor bugfixes:
#691: Support for SCHILY.xattr extended attributes
#854: Spelling fixes

Multiple fixes in ACL code:
  - prefer acl_set_fd_np() to acl_set_fd()
  - if acl_set_fd_np() fails, do no fallback to acl_set_file()
  - do not warn if trying to write ACLs to a filesystem without ACL support
  - fix id handling in archive_acl_(from_to)_text*() for NFSv4 ACLs

MFC after:	1 week
X-MFC with:	r310866
2017-01-10 21:59:35 +00:00
Enji Cooper
7931520d40 Diff reduce with upstream by removing signal.h #include
MFC after:	3 days
2017-01-10 10:27:09 +00:00
Enji Cooper
b6a72c5dbe Merge ^/vendor/NetBSD/tests/dist@r311868
This is the vendor accepted version of ^/head@r311245

MFC after:	3 days
2017-01-10 10:16:59 +00:00
Enji Cooper
2bbc0fe246 Merge the grammar fix for lib/libc/gen/raise_test:raise_stress
MFC after:	3 days
2017-01-10 10:12:36 +00:00
Dimitry Andric
93729b12fb Merge compiler-rt trunk r291476. 2017-01-09 22:49:35 +00:00
Dimitry Andric
80779b3774 Merge libc++ trunk r291476, update Makefile, ObsoleteFiles.inc and
OptionalObsoleteFiles.inc.
2017-01-09 22:41:53 +00:00
Dimitry Andric
24e2fe98d0 Merge llvm, clang, lld and lldb trunk r291476. 2017-01-09 22:32:19 +00:00
Dimitry Andric
b0cc56edcc Merge ^/head r311692 through r311807. 2017-01-09 19:25:49 +00:00
Enji Cooper
818d3ff977 Add a REVISION section to track changes for the BEGEMOT-MIB MIB file
There haven't been any changes to the MIB definition, so the REVISION
remains static at the version it was imported at

MFC after:	1 week
2017-01-09 06:27:30 +00:00
Enji Cooper
0c72a43f3f Add a REVISION section to track changes for the FOKUS-MIB MIB file
There haven't been any changes to the MIB definition, so the REVISION
remains static at the version it was imported at

MFC after:	1 week
2017-01-09 06:24:28 +00:00
Enji Cooper
b55d259a14 Similar to r311750, check for the result from smiGetModule to avoid a segfault
when dereferencing a NULL pointer later on.

Choose to just check for the NULL pointer in the next for-loop for now to fix
the issue with a minimal amount of code churn

sys/queue.h use here would make more sense than using a static table

MFC after:	5 days
2017-01-09 06:13:27 +00:00
Enji Cooper
8406423362 Use calloc instead of malloc + memset(.., 0, ..)
MFC after:	5 days
2017-01-09 06:03:49 +00:00
Enji Cooper
c5f8d75113 Check result from smiGetFirstNode and smiGetNodeByOID
This avoids a segfault with malformed or unanticipated files,
like IPV6-TC.txt (a file containing just TEXTUAL-CONVENTIONS).

MFC after:	5 days
Found with:	gensnmpdef /usr/local/share/snmp/mibs/IPV6-TC.txt
2017-01-09 05:51:38 +00:00
Enji Cooper
fbd43e4c99 Add a REVISION section to track changes for the BEGEMOT-IP-MIB MIB file
There haven't been any changes to the MIB definition, so the REVISION
remains static at the version it was imported at

MFC after:	1 week
2017-01-09 03:21:21 +00:00
Enji Cooper
0ab7046959 Use nitems(mib) instead of hardcoding mib's length when calling sysctl(3)
MFC after:	3 days
2017-01-09 01:47:00 +00:00
Dimitry Andric
91f52fcc1f Clean out stuff we don't use. 2017-01-08 19:48:13 +00:00
Dimitry Andric
f00b4812b9 Merge compiler-rt r291274. 2017-01-08 19:47:17 +00:00
Dimitry Andric
aed8d94e97 Merge libc++ r291274, and update the library Makefile. 2017-01-08 19:39:03 +00:00
Dimitry Andric
69415bc524 Merge ^/head r311546 through r311683. 2017-01-08 14:36:18 +00:00
Dimitry Andric
00742f6ced Fix the following clang 4.0.0 warning in ngatm's snmp_atm.c:
contrib/ngatm/snmp_atm/snmp_atm.c:173:6: error: logical not is only
    applied to the left hand side of this bitwise operator
    [-Werror,-Wlogical-not-parentheses]
            if (!ifmr.ifm_status & IFM_AVALID) {
                ^                ~

Obviously, the masking needs to be done before the logical not
operation.  Add parentheses to make it so.

MFC after:      3 days
2017-01-07 15:57:12 +00:00
Ed Maste
d4cd50b494 libunwind: add noexec stack annotation
Reported by:	vangyzen
Reviewed by:	kib
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D9075
2017-01-07 14:40:58 +00:00
Dimitry Andric
05ea86b0c0 In tcpdump's print-tcp.c, avoid increasing alignment when taking the
addresses of members of struct ip, which is packed.  Since the pointers
are only used for memcmp'ing, they can be pointing to void instead.

Note that upstream has removed the src and dst variables, in the mean
time.

MFC after:	3 days
2017-01-07 00:17:01 +00:00
Dimitry Andric
dba092b109 After r311459, some ports can break, because a few of the newly added
prototypes in <tcpd.h> use FILE.  Pull in a minimal forward declaration
of FILE from <stdio.h> to minimize impact.  Sorry for the breakage.

Reported by:	Shawn Webb <shawn.webb@hardenedbsd.org>
X-MFC-With:	r311459
2017-01-06 21:40:30 +00:00
Dimitry Andric
7fa59e6718 Merge ^/head r311460 through r311545. 2017-01-06 20:33:48 +00:00
Dimitry Andric
95ec533a1d Merge llvm, clang, lld and lldb trunk r291274, and resolve conflicts. 2017-01-06 20:24:06 +00:00
Konstantin Belousov
1c32456953 Use type-independent formats for printing nlink_t and ino_t.
Extracted from:	ino64 work by gleb, mckusick
Discussed with:	mckusick
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2017-01-06 16:59:33 +00:00
Enji Cooper
08235f2408 Remove unnecessary __unused attribute attached to ctx in op_begemot_mibII(..)
MFC after:	3 days
2017-01-06 07:57:45 +00:00
Xin LI
1456f0f968 MFV r311477: xz 5.2.3.
MFC after:	2 weeks
2017-01-06 07:54:53 +00:00
Dimitry Andric
8da8161b26 Also remove unnecessary extern keywords from tcpd.h.
Noticed by:	kib
X-MFC-With:	r311459
2017-01-05 21:17:10 +00:00
Dimitry Andric
2b532af829 Merge ^/head r311314 through r311459. 2017-01-05 20:50:44 +00:00
Dimitry Andric
fd3e9b3896 Put proper prototypes in tcpd.h
Clang 4.0.0 complains about tcpd.h's not-really-prototypes, e.g.:

    /usr/include/tcpd.h:75:24: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
    extern int hosts_access();              /* access control */
                           ^

To fix this, turn these declarations into real prototypes.  While here,
garbage collect the incompatible rfc931() function from scaffold.c, as
it is never used.

Reviewed by:	emaste
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D9052
2017-01-05 20:44:45 +00:00
Enji Cooper
60c2226f89 op_usm_users: don't deref uusers if it's NULL when SETting the value
Add an XXX comment to note that the conditional seems suspect given
how it's handled elsewhere in the SNMP_OP_SET case.

MFC after:	2 weeks
Reported by:	Coverity
CID:		1008573
2017-01-05 09:46:36 +00:00
Enji Cooper
3daec7ae72 snmp_table_fetch_async: don't leak work if snmp_pdu_send(..) fails
MFC after:	1 week
Reported by:	Coverity
CID:		1017276
2017-01-05 08:49:06 +00:00
Enji Cooper
994c8618ec op_usm_users: fix indentation in SNMP_OP_SET block
MFC after:	3 days
2017-01-05 08:27:23 +00:00
Enji Cooper
446bd8a476 Use calloc instead of malloc + memset(.., 0, ..)
MFC after:	3 days
2017-01-05 08:17:17 +00:00
Enji Cooper
70157df618 lsock_init_port: address issues with initializing sockaddr_un object
- Use strlcpy to ensure p->name doesn't overflow sa.sun_path [*].
- Use SUN_LEN(..) instead of spelling out calculation longhand (inspired
  by comment by jmallett).

Tested with:	dgram and stream support with both bsnmpwalk and snmpwalk

MFC after:	1 week
Reported by:	Coverity
CID:		1006825
2017-01-05 08:14:20 +00:00
Enji Cooper
10a0306a2e lm_load: fix string copying issues
- Ensure `section` doesn't overrun section by using strlcpy instead of
  strcpy [*].
- Use strdup instead of malloc + strcpy (this wasn't flagged by Coverity,
  but is an opportunistic change).

MFC after:	1 week
Reported by:	Coverity
CID:		1006826 [*]
2017-01-05 07:55:17 +00:00
Enji Cooper
20a4ce8bf2 Redo fix for CID 979581
The previous change was flawed in terms of how it calculated the
buffer length for the sockaddr_un object. Use SUN_LEN where
appropriate and mute the Coverity complaint by using memset(.., 0, ..)
to zero out the entire structure instead of setting .sun_len to a bogus
value and strlcpy'ing in the contents of argv[1].

SUN_LEN is now being passed to bind(2) as well. For some odd reason
this wasn't flagged as a bug with Coverity.

Reported by:	jilles, jmallett
MFC after:	2 days
X-MFC with:	r311233
2017-01-05 07:46:57 +00:00
Dimitry Andric
e466241c2a Merge llvm, clang, lld and lldb trunk r291015, and resolve conflicts. 2017-01-04 22:29:00 +00:00
Dimitry Andric
8e0f8b8c96 Merge llvm, clang, lld and lldb trunk r291012, and resolve conflicts. 2017-01-04 22:19:42 +00:00
Dimitry Andric
91b95f3d9a Merge ^/head r311132 through r311305. 2017-01-04 20:41:43 +00:00
Dimitry Andric
629e066c03 Update lldb Makefile, and disable some functionality for Windows and
Darwin.
2017-01-04 19:53:04 +00:00
Xin LI
a94dccbe27 MFV r311279: zlib 1.2.10.
MFC after:	1 month
2017-01-04 16:09:08 +00:00
Enji Cooper
ccd0cf8ffa snmp_mibII(3) requires net/if.h and net/if_mib.h
Document that requirement

MFC after:	1 week
2017-01-04 10:08:18 +00:00
Xin LI
ea3017ea00 Vendor import of zlib 1.2.10. 2017-01-04 09:37:45 +00:00
Xin LI
e16f0839c6 Restructure libz, place vendor files in contrib/zlib like other third
party software, this provides more standarized import workflow and
makes future upgrades easier.

The following files are new with this commit:

	zconf.h.in
	zlib.map
	zlib.pc.in

They are not connected to build, but were kept in tree for reference
for future maintenance.

All our local trivial changes were applied to contrib/zlib, and the
contrib/zlib vendor source code is intended to 100% match lib/libz
before this commit.

MFC after:	2 weeks
2017-01-04 09:30:47 +00:00
Enji Cooper
d6766132c2 run: ensure pthread_condattr_{init,setclock} is successful
MFC after:	1 week
Reported by:	Coverity
CID:		1268631, 1268633
2017-01-04 09:06:49 +00:00
Enji Cooper
dca7cc9815 setrlimit_basic: don't leak buf; free it on completion
MFC after:	3 days
Reported by:	Coverity
CID:		978311
2017-01-04 09:00:16 +00:00
Enji Cooper
fcc9604d43 revoke_perm: don't leak fd at the end of the test; close it
This code is unused on FreeBSD, but it mutes a valid Coverity warning
which would be true on NetBSD

MFC after:	3 days
Reported by:	Coverity
CID:		978311
2017-01-04 08:59:06 +00:00
Enji Cooper
621b0f13af stat_symlink: don't leak fd; close the file descriptor when done
MFC after:	3 days
Reported by:	Coverity
CID:		978314
2017-01-04 08:49:07 +00:00
Enji Cooper
c0b11b8e04 pipe_restart: free f on function exit to quell complaint from Coverity
MFC after:	3 days
Reported by:	Coverity
CID:		978307
2017-01-04 08:43:27 +00:00
Enji Cooper
64af3fbaba swapcontext1: test for getcontext(3) and swapcontext(3) success properly
The beforementioned libcalls both succeed if the return codes aren't -1

MFC after:	3 days
Reported by:	Coverity
CID:		976790, 976791
2017-01-04 08:35:46 +00:00
Enji Cooper
7251167f52 Clarify lifetime of child(..) function
Ensure child exits when complete as it's always run in a forked
process.

Add a missing break statement in :pselect_sigmask when calling
child(..) for clarity and to avoid weird domino effects if the
child process somehow does something it's not supposed to do
with the logfiles, file descriptors, etc

MFC after:	1 week
Reported by:	Coverity
CID:		1223369, 1223370, 1300301
2017-01-04 08:25:31 +00:00
Xin LI
0594943177 Add missing files in zlib 1.2.8. 2017-01-04 08:12:31 +00:00
Enji Cooper
17a0c1eb75 fpu: ensure calls to pthread_create succeed and test sched_yield to make
sure it returns 0

sched_yield tests for values returning 0 of type int and sched_yield is
of type long, so the test is a mismatch

MFC after:	1 week
Reported by:	Coverity
CID:		1254953, 1254954, 1254965, 1254966
2017-01-04 08:07:48 +00:00
Enji Cooper
2e590d595e Use calloc instead of malloc with buffers in snmp_{recv,send}_packet
This doesn't fix the issue noted in the PR, but at the very least it
cleans up the error so it looks a bit more sane, and in the event
that bsnmp did wander off into the weeds, the likelihood of it
crashing with more sensible output is greater, in my opinion

MFC counter set high so I have enough time to resolve the real
underlying bug in bsnmpwalk

MFC after:	1 month
PR:		215721
2017-01-04 07:53:01 +00:00
Enji Cooper
b5bbd2a17c mincore_resid: free buf after use
MFC after:	3 days
Reported by:	Coverity
CID:		978304
2017-01-04 04:55:33 +00:00
Enji Cooper
83e8b13f15 {strchr,strlen}_basic: don't leak the dlopen'ed handle; close after use
MFC after:	3 days
Reported by:	Coverity
CID:		978299, 978300
2017-01-04 04:50:03 +00:00
Enji Cooper
5d37d9cc25 mknodat_fd: close dfd after use to avoid leaking it
MFC after:	3 days
Reported by:	Coverity
CID:		978287
2017-01-04 04:32:00 +00:00
Enji Cooper
f4cbf11049 mkfifoat_fd: close dfd after use to avoid leaking it
MFC after:	3 days
Reported by:	Coverity
CID:		978286
2017-01-04 04:29:53 +00:00
Enji Cooper
5641f109c1 fexecve: don't leak fd on fexecve(2) failure; close before calling err
MFC after:	3 days
Reported by:	Coverity
CID:		978285
2017-01-04 04:27:13 +00:00
Enji Cooper
3b33767589 tty: don't leak s after opening it with openpty
MFC after:	3 days
Reported by:	Coverity
CID:		978321
2017-01-04 04:19:05 +00:00
Enji Cooper
57f5b7d843 mmap_prot_3, mmap_truncate, mmap_truncate_signal: don't leak fd and map
Reported by:	Coverity
CID:		978306, 1251406, 1288196, 1300541
2017-01-04 04:10:36 +00:00
Enji Cooper
619898777b listen_low_port: check for errors from socket(2) before continuing
MFC after:	3 days
Reported by:	Coverity
CID:		976778
2017-01-04 03:59:50 +00:00
Enji Cooper
2020383ffd kqueue_desc_passing: initialize m.msg_flags to 0
This mutes an uninitialized scalar warning from Coverity

MFC after:	3 days
Reported by:	Coverity
CID:		979620
2017-01-04 03:54:54 +00:00
Enji Cooper
ab25ecadbf umask_open: don't leak fd on success
MFC after:	3 days
Reported by:	Coverity
CID:		978315
2017-01-04 03:41:16 +00:00
Enji Cooper
3c917d6fa3 unlink_fifo: don't leak the file descriptors opened with mkfifo and open
MFC fater:	3 days
Reported by:	Coverity
CID:		978316, 978317
2017-01-04 03:35:23 +00:00
Enji Cooper
6a64e31600 ttyname_err: close fd if it was opened successfully
MFC after:	3 days
Reported by:	Coverity
CID:		978292
2017-01-04 02:52:39 +00:00
Enji Cooper
cc34906655 Fix Coverity issues
- Initialize .sun_len before passing it to strlcpy and bind.
- Close fd on error

MFC after:	3 days
Reported by:	Coverity
CID:		978283, 979581
2017-01-04 02:46:36 +00:00
Enji Cooper
251d8e776e humanize_number_basic: don't leak buf
MFC after:	3 days
Reported by:	Coverity
CID:		1251407
2017-01-04 02:38:14 +00:00
Enji Cooper
06cd8428bc ftok_link: don't leak fd
MFC after:	3 days
Reported by:	Coverity
CID:		978291
2017-01-04 02:34:30 +00:00
Enji Cooper
05aee7d5b0 seekdir_basic: fix various Coverity issues
Address..
- .. resource leaks of file descriptors and memory
- .. unchecked return values from creat(2), mkdir(2), and telldir(3)
- .. potential NULL derefs after calling readdir(3)

MFC after:	1 week
Reported by:	Coverity
CID:		975255, 975256, 976989, 978989, 978990
2017-01-04 02:31:05 +00:00
Enji Cooper
1a55af1fb9 Initialize msg.msg_flags to 0
This mutes a valid coverity warning about it being uninitialized
when passed in to sendmsg(2).

MFC after:	2 weeks
Reported by:	Coverity
CID:		1368202
2017-01-04 01:38:07 +00:00
Dimitry Andric
ded09321a8 Disable PDB support in LLVMSymbolizer for now, to avoid llvm-objdump
pulling in all the PDB handling code.
2017-01-03 20:19:37 +00:00
Dimitry Andric
dfb5f2eb8a Fix printf format warning on i386. 2017-01-03 18:10:23 +00:00
Dimitry Andric
e9f2ce8531 Comment out more unused functionality. 2017-01-03 18:09:54 +00:00
Dimitry Andric
545866cd2e Remove incorrectly merged code fragment. 2017-01-03 18:09:16 +00:00
Dimitry Andric
5bf4713bde Fix line endings (upstream file has CRLF ones). 2017-01-02 22:05:05 +00:00
Dimitry Andric
435933dd67 Update lldb to trunk r290819 and resolve conflicts. 2017-01-02 21:59:52 +00:00
Dimitry Andric
1189dbaa8c Update lld to trunk r290819 and resolve conflicts. 2017-01-02 21:32:52 +00:00
Dimitry Andric
4429064704 Update clang to trunk r290819 and resolve conflicts. 2017-01-02 21:29:30 +00:00
Dimitry Andric
d88c1a5a57 Update llvm to trunk r290819 and resolve conflicts. 2017-01-02 21:25:48 +00:00
Enji Cooper
84d0b89e96 Fix spelling errors; bump .Dd for the change
MFC after:	3 days
2017-01-01 05:23:01 +00:00
Enji Cooper
d1b4c796ac Bump .Dd for the spelling and .Nm updates
MFC after:	3 days
2017-01-01 05:16:24 +00:00
Enji Cooper
d075380571 Fix spelling errors
MFC after:	3 days
Reported by:	igor
2017-01-01 05:14:58 +00:00
Enji Cooper
ad52f0d10c bsnmpclient(3) also documents snmp_client_init, snmp_client_set_host,
and snmp_client_set_port. Add them to the NAME section

MFC after:	3 days
2017-01-01 05:13:54 +00:00
Enji Cooper
1cc49661ec snmp_discover_engine: fix up req/resp (PDU object) handling a bit
- Call snmp_pdu_free on req and resp when done with the objects
- Call snmp_pdu_free on req before calling snmp_pdu_create on it
  again

MFC after:	1 week
2016-12-31 23:20:57 +00:00
Enji Cooper
560c5ef9a2 Similar to r310954, set .len to 0 on malloc failure and to len only
on success

MFC after:	1 week
2016-12-31 12:37:53 +00:00
Enji Cooper
39ebb4e1e0 Initialize ret to SNMPD_INPUT_OK at the top of snmp_input_start(..) to
avoid returning an uninitialized value

There are some really complicated, snakey if-statements combined with
switch statements that could result in an invalid value being returned
as `ret`

MFC after:	1 week
Reported by:	Coverity
CID:		1006551
2016-12-31 12:30:14 +00:00
Enji Cooper
8e02b381d3 Use strlcpy when copying com to pdu->community to avoid potential
buffer overruns

MFC after:	1 week
Reported by:	Coverity
CID:		1006823, 1006824
2016-12-31 12:18:17 +00:00
Enji Cooper
a0e0e1ffa5 MIB-II: use strlcpy instead of strcpy when copying {descr,name}
This is of course to avoid buffer overruns

The remaining strcpy instance in the module needs to be audited for
correctness

MFC after:	1 week
Reported by:	Coverity
CID:		1006827, 1006828
2016-12-31 12:03:25 +00:00
Enji Cooper
02ff676c4d MIB-II: use strlcpy when copying interface names to .ifr_name
.ifra_name is assumed to be NUL terminated; using strlcpy(3)
ensures that it's indeed NUL terminated whereas strncpy does
not.

Tested and verified as follows with a combination of ifconfig,
snmpget, and snmpset:

  % ifconfig create lo1 127.0.0.2/8
  % SNMPARGS="-v 3 -n '' -u bsnmp -A bsnmptest -l authPriv -a sha -x des -X bsnmptest localhost"
  % snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
  IF-MIB::ifAdminStatus.4 = INTEGER: up(1)
  % snmpset $SNMPARGS IF-MIB::ifAdminStatus.4 i 2
  IF-MIB::ifAdminStatus.4 = INTEGER: down(2)
  % snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
  IF-MIB::ifAdminStatus.4 = INTEGER: down(2)
  % snmpset $SNMPARGS IF-MIB::ifAdminStatus.4 i 1
  IF-MIB::ifAdminStatus.4 = INTEGER: up(1)
  % snmpget $SNMPARGS IF-MIB::ifAdminStatus.4
  IF-MIB::ifAdminStatus.4 = INTEGER: up(1)

MFC after:	2 weeks
Reported by:	Coverity
CID:		1009652-1009656, 1349850
2016-12-31 11:50:36 +00:00
Enji Cooper
1e5211d238 Unbreak the build by passing the string to strdup, not its length
MFC after:	1 week
X-MFC with:	r310931
Pointyhat to:	ngie
2016-12-31 11:24:12 +00:00
Enji Cooper
bfb81e6524 Use strdup in snmp_parse_server(..) when possible instead of malloc+strcpy
This simplifies the code and mutes a Coverity warning about sc->cport being
improperly allocated

Reported by:	Coverity
CID:		1018247
MFC after:	1 week
2016-12-31 11:13:00 +00:00
Enji Cooper
8373993535 Guard against use-after-free after calling mibif_free(..)
Set variables to NULL after calling free.

Also, remove unnecessary if (x != NULL) checks before calling free(x)

MFC after:	1 week
2016-12-30 23:44:39 +00:00
Martin Matuska
739d7cfd6d MFV r310869:
Sync libarchive with vendor.

Vendor bugfixes:
Use __LA_DEPRECATED macro with functions deprecated in 379867e (r310796)

MFC after:	2 weeks
X-MFC with:	r310866
2016-12-30 23:05:06 +00:00
Martin Matuska
09c253fd1b MFV r310798:
Sync libarchive with vendor.

Vendor bugfixes (relevant to FreeBSD):
PR #843: Fix memory leak of struct archive_entry in cpio/cpio.c
PR #851: Spelling fixes
Fix two protoypes in manual page archive_read_disk.3

MFC after:	2 weeks
2016-12-30 22:54:08 +00:00
Martin Matuska
e9ed7ea4dc MFV r310796, r310797:
Sync libarchive with vendor.

Vendor changes (relevant to FreeBSD):
PR #771: Add NFSv4 ACL support to pax and restricted pax

NFSv4 ACL information may now be stored to and restored from tar archives.
ACL must be non-trivial and supported by the underlying filesystem, e.g.
natively by ZFS or by UFS with the NFSv4 ACL enable flag set.

MFC after:	2 weeks
Relnotes:	yes
2016-12-30 22:18:22 +00:00
Enji Cooper
2fd30e016e Fix whitespace in a comment and fixing a spelling error in a comment
MFC after:	3 days
2016-12-30 21:41:01 +00:00
Enji Cooper
b8882958b3 Use uint32_t instead of u_int32_t for or_last_change and services in "struct systemg"
This is being done to match "struct systemg" in snmpmod(3)

No functional change

MFC after:	3 days
2016-12-29 08:16:43 +00:00
Enji Cooper
6c9b7542ef Prevent improper memory accesses after calling snmp_pdu_free and snmp_value_free
snmp_pdu_free: set pdu->nbindings to 0 to limit the damage that
could happen if a pdu was reused after calling the function, and
as both stack and heap allocation types are used in contrib/bsnmp
and usr.sbin/bsnmpd.

snmp_value_free: NULL out value->v.octetstring.octets after calling
free on it to prevent a double-free from occurring.

MFC after:      2 weeks
2016-12-29 00:20:03 +00:00
Mark Johnston
2ef476c9a2 Follow DW_AT_specification when looking up DW_AT_type attributes.
dwarf_attrval_*() will search the parent DIE referenced by a
DW_AT_abstract_origin attribute for the value of the DW_AT_type attribute.
Do the same thing for the DW_AT_specification attributes in variable
definitions emitted by GCC 6.2, and ensure that we return an error rather
than crashing if neither DW_AT_abstract_origin or DW_AT_specification is
found when looking for the value of the DW_AT_type attribute.

PR:		215350, 215395
Reviewed by:	emaste
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D8920
2016-12-28 21:54:33 +00:00
Dmitry Marakasov
b9c36cc755 bzip2 does not exit after showing license as requested with --version
or --license as most apps would do, instead it waits for data to
compress on stdin. Because of that, if `bzip2 --version' is called,
bogus `bzip2: I won't write compressed data to a terminal' error
message will be displayed, and checking for bzip2 version in scripts
as in

    bzip2 --version 2>&1 | grep -o "Version [^,]*"

will hand as bzip2 would wait for data to compress on stdin. Fix
this by exiting right after showing version/license text.

I've tried to push this upstream for more than a year, but author
is unresponsive, so upstream may be considered dead.

Ubuntu applies similar fix, for the note.

PR:		199443
Approved by:	dim, bapt
MFC after:	2 weeks
Differential Revision:	D8924
2016-12-28 18:04:18 +00:00
Enji Cooper
b3972edb64 style(9): ip_get(..): clean up whitespace
MFC after:	3 days
2016-12-28 05:05:08 +00:00
Enji Cooper
700d391fb8 style(9): snmp_send_packet(..): fix whitespace
MFC after:	3 days
2016-12-28 04:56:15 +00:00
Enji Cooper
bc54857ed0 style(9): fix whitespace in pdu_encode_secparams(..)
MFC after:	3 days
2016-12-28 04:53:52 +00:00
Enji Cooper
5120d21c63 style(9): sort alignment in udp_recv(..)
MFC after:	3 weeks
2016-12-28 04:31:07 +00:00
Enji Cooper
8d7f605b6c Fix bsnmpd sending/receiving with multi-homed configurations or INADDR_ANY used
as the listening address in snmpd_input(..)

Stash the IPv4 address of the receiver via the recv(..) callback and use it in
the send(..) callback for the transport by specifying IP_SENDSRCADDR for the
control message type.

Add sendmsg logic to the UDP transport's send(..) callback and use the
respective send(..) callback for the transport instead of calling sendto in
snmpd_input(..).

MFC after:      3 weeks
Obtained from:  Isilon OneFS (^/onefs/branches/BR_8_0_0_DEV@r507595)
Submitted by:   Thor Steingrimsson <thor.steingrimsson@isilon.com>
Sponsored by:   Dell EMC Isilon
2016-12-28 04:29:09 +00:00
Enji Cooper
e1d581b289 style(9): clean up trailing whitespace
MFC after:	3 weeks
2016-12-27 23:32:54 +00:00
Ed Maste
d0aa56451e elfcopy: fix PE object section name corruption and crash
Fixed a bug that the PE object section names are generated incorrectly
using the section name table found in the original input ELF object
instead of the intermediate ELF object.

Ticket:		#541

Do not try to copy section content from a NULL d_buf when creating
uninitialized data COFF section for PE object.

Ticket:		#540

Obtained from:	ELF Tool Chain r3507, r3508
MFC after:	1 week
2016-12-27 17:31:07 +00:00
Martin Matuska
7105995c64 MFV r310622:
Sync libarchive with vendor.

Vendor bugfixes (relevant to FreeBSD):
PR 846: Spelling fixes
PR 850: Fix issues with reading certain jar files
OSS-Fuzz 286: Bugfix in archive_strncat_l()
2016-12-27 01:10:28 +00:00
Enji Cooper
23516259fd style(9): fix trailing whitespace
MFC after:	3 days
2016-12-26 11:16:55 +00:00
Enji Cooper
3b7e3b0ae5 Update engine time using update_snmpd_engine_time(..)
MFC after:	6 days
X-MFC with:	r310498
Sponsored by:	Dell EMC Isilon
2016-12-26 11:11:30 +00:00
Enji Cooper
0077de5654 Fix return type for ret (recv callback) and sort variables by alignment
Again, for reasons I don't yet understand, this is not being flagged by the
compiler. Unlike the issue addressed in r310587, this problem existed prior
to r310586

MFC after:	2 weeks
X-MFC with:	r310586, r310587
2016-12-26 10:24:48 +00:00
Enji Cooper
2bc1d16ea7 Fix definition for recv_dgram(..); it should be "ssize_t", not "int"
I'm not sure why this wasn't flagged as an issue by the compiler, yet

MFC after:	3 weeks
X-MFC with:	r310586
2016-12-26 10:21:28 +00:00
Enji Cooper
0ba351ef58 Refactor transport sources a bit to facilitate changes coming down pipeline
Add recv callback to transport layer to better facilitate code reuse and
readability and for symmetry with send callback. Move recv_dgram and
recv_stream to udp_recv and lsock_recv, respectively, and make the
beforementioned functions recv callbacks for the udp and lsock transports,
respectively.

Consolidate the check_priv* functions in their relevant trans*.c source to
limit scope/use.

Note: this code is roughly based content from the submitter, although this
was modified to be more of a direct move from snmpd/main.c to the trans_*.c
sources, and to reduce unnecessary static function declarations.

MFC after:	2 weeks
Submitted by:	Thor Steingrimsson <thor.steingrimsson@isilon.com>
Sponsored by:	Dell EMC Isilon
2016-12-26 10:17:22 +00:00
Enji Cooper
0327a0e823 Fix style(9)
- Sort #includes
- Delete trailing whitespace

No functional change

MFC after:	3 days
2016-12-26 07:31:16 +00:00
Enji Cooper
9ca3777288 style(9): delete stray trailing whitespace after break statement
MFC after:	3 days
2016-12-24 11:49:25 +00:00
Enji Cooper
6521e5f846 Be more strict about IpAddress type in snmp_value_parse(..)
- Use inet_pton with AF_INET instead of doing longhand with sscanf.
- Use gethostbyname2 with AF_INET to ensure that the hostname isn't
  accidentally parsed with another address family, e.g. AF_INET6.

NB: IpAddress per RFC-2578 is IPv4 only. Work is in progress to add
    the InetAddress type and friends documented in RFC-4001 and
    elsewhere (which supports IPv4, IPv6, and more).

MFC after:	2 weeks
2016-12-24 11:41:16 +00:00
Enji Cooper
3b9712fa95 Minor style(9) fixes
- Trailing whitespace cleanup
- Sort variables in snmp_dialog(..) by alignment

No functional change

MFC after:	1 week
2016-12-24 11:30:24 +00:00
Enji Cooper
846157438d Sort #includes
No functional change

MFC after:	3 days
2016-12-24 11:26:55 +00:00
Enji Cooper
88cdfafad2 Allow SNMPv3 authNoPriv and noAuthNoPriv protocols to discover snmpEngineTime
as discussed in RFC-5343

This fixes interoperability with net-snmp.

Tested with the following invocations of snmpwalk (from net-snmp):

- noAuthNoPriv:

  % snmpwalk -v 3 -n '' -u public localhost snmpEngineTime

- authNoPriv:

  % snmpwalk -v 3 -n '' -u bsnmp -A bsnmptest -l authNoPriv -a sha localhost \
    localhost snmpEngineTime

- authPriv:

  % snmpwalk -v 3 -n '' -u bsnmp -A bsnmptest -l authPriv -a sha -x des \
    -X bsnmptest localhost snmpEngineTime

MFC after:	1 week
Obtained from:	Isilon OneFS (5ec6d772cacbc, with minor tweaks)
Submitted by:	Austin Voecks <austin.voecks@isilon.com>
Sponsored by:	Dell EMC Isilon
2016-12-24 11:23:18 +00:00
Enji Cooper
650eded917 Sort #includes per style(9)
No functional change

MFC after:	3 days
2016-12-23 07:55:13 +00:00
Enji Cooper
f29369b7fb Clarify failure in snmp_output(..) with call to snmp_pdu_decode
- Explicitly test snmp_pdu_encode against SNMP_CODE_OK instead of assuming
  any non-zero value is bad.
- Print out the code before calling abort() to give the end-user something
  actionable to debug without having to recompile the binary, since the
  core might not have these details.

MFC after:	1 week
2016-12-23 05:07:28 +00:00