9098338f79
Instead of exiting with an obscure error message if -N /kernelname isn't
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specified, blithely assume the kernel will consume around 20 megs.
2009-08-18 04:02:39 +00:00
fb63fbd0cc
fix sign-compare issues
2009-04-06 12:32:30 +00:00
ede5dc65a8
Fix savecore so it uses /dev/ksyms when it can (doesn't override libkvm
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default). Fixes misc/38425.
2009-03-21 19:32:44 +00:00
101a9782a2
Add crash(8), a utility to diagnose kernel crashes. This is basically
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ddb running on crash dumps, but with two notable changes:
- Breakpoints, watches, etc are obviously never going to work so they
are not handled.
- You can pipe output to the shell, e.g. ps | grep foo
Items remaining to be done:
- Port it to architectures other than i386. This isn't difficult, just
a case of making db_disasm.c/db_trace.c or their equivalent compile
and work.
- Make more of the "show" commands work, e.g "show uvmexp".
2009-03-07 22:08:07 +00:00
118c87a6fe
fix dev_t format.
2008-12-28 20:17:11 +00:00
2df6131a64
Enable the faked ELF kernel by default, now that ksyms output works with
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gdb. Makes it possible to do post-mortem debugging on a modular kernel.
2008-12-05 21:41:10 +00:00
dc7ae0762f
- Add code to produce a fake ELF kernel containing only symbol info. Done
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by extracting ksyms state from the dump, so we have symbols for modules
loaded at the time of the crash. If ksyms extraction fails, this falls
back to the current behaviour of copying /netbsd.
- Leave it disabled for the moment: (1) we are about to branch (2) most
tools understand the artificial kernel but gdb has trouble with it for
some reason.
2008-10-20 10:34:54 +00:00
281bbad379
Explicitly check that the dump device is not the console, a tty or pty.
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While the list is adhoc, the problems reported are always with
/dev/console. Adresses PR 38425 and similiar issues with Xen.
2008-10-09 13:59:50 +00:00
6543a91fea
Remove the \n and tabs from the __COPYRIGHT() strings.
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(Tweak some to use a consistent format.)
2008-07-20 01:20:21 +00:00
76f153e120
sync() a couple of times to benefit diagnosis of sloppy kernel code that
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crashes during boot to multiuser.
2008-04-20 23:40:31 +00:00
73e694f404
Don't use the block device to read crashdumps, if possible.
2008-01-15 14:26:41 +00:00
3384f1f26e
tyop: _time_seconf -> _time_second
2007-11-12 16:04:55 +00:00
8539ad5cf5
from Anon Ymous: remove (void)&var;
2006-12-18 20:08:48 +00:00
50b568b12d
c99 initializers
2006-10-16 02:56:56 +00:00
e386d70092
accept either "time_second" or "time" as kernel timevariable in
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order to support common userland in enviroments where
timecounter kernels and non timecounter kernel co-exist
(e.g. xen & i386)
2006-07-09 06:43:16 +00:00
75418af90c
support timecounters (struct time gone, use time_second then)
2006-06-07 20:56:19 +00:00
f500b89c3d
Free some allocated memory in the failure case when trying to
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fetch the panic string.
Fixes Coverity CID 1856.
2006-03-17 01:45:51 +00:00
2c6eadc9ce
Move WARNS=3 to the Makefile.inc, and add a little const to the remaining
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programs that did not compile before.
2005-06-27 01:00:04 +00:00
1dfaf4a3ca
Rearrange the option formatting to be both prettier and more complete
2004-10-21 10:13:00 +00:00
32eca9407f
New sentence, new line; use .Dq instead of ``''.
2004-10-16 05:44:59 +00:00
9a582784d5
Bump date for -n description
2004-10-16 04:38:53 +00:00
d01162a3bc
Added -n option, which tests for a present core but doesn't write it
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to disk or clear it (does 'nothing').
http://mail-index.netbsd.org/tech-userlevel/2004/10/09/0000.html
2004-10-16 04:29:27 +00:00
4b46224291
Added -n option, which tests for a present core but doesn't write it
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to disk or clear it (does 'nothing').
http://mail-index.netbsd.org/tech-userlevel/2004/10/09/0000.html
2004-10-16 03:48:15 +00:00
e8092c77bc
Fix an integer overflow that prevented saving cores from machines with
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more than 2GB of RAM.
"dumpsize" in the on-disk core header is in pages, but, unfortunately,
c.size in our kcore format is an unsigned 32-bit int, gross.
We sleaze it, using a 64-bit int internally here and handing it to
libkvm as a *signed* 32-bit int. Won't always work, but shouldn't be
broken any worse than it is now, and sometimes work better.
We must fix the kcore format and libkvm.
2004-07-14 07:26:12 +00:00
6bd1d6d4db
Replace the statfs() family of system calls with statvfs().
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Retain binary compatibility.
2004-04-21 01:05:31 +00:00
99319b80db
Give a 60 day leeway instead of a week when judging if the dumptime is valid.
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7 days is too short when you are debugging time problems.
2004-03-30 19:52:02 +00:00
276d62f603
Move UCB-licensed code from 4-clause to 3-clause licence.
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Patches provided by Joel Baker in PR 22308, verified by myself.
2003-08-07 10:04:22 +00:00
f5878476d9
simplify by strlcpy
2003-05-18 02:11:13 +00:00
990562bfef
.Nm does not need a dummy argument ("") before punctuation or
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for correct formatting of the SYNOPSIS any longer.
2003-02-25 10:34:36 +00:00
764e56a614
Remove prototype for non-existent function log().
2002-12-06 02:20:00 +00:00
09cbac4e7f
New sentence, new line. From Robert Elz.
2002-10-03 15:41:44 +00:00
335fd2d7c2
use humanize_number(3) for progress printout
2002-09-27 18:38:53 +00:00
94d01e0c5d
PR/15502: Wolfgang Rupprecht: savecore fails for > 2GB files.
2002-03-19 18:55:03 +00:00
07b8153219
Change type of dumpmag and newdumpmag from int to u_int32_t
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since they hold 32bit unsigned magic numbers. (sync with kernels)
2002-03-06 13:13:08 +00:00
80d1ff493a
Sort sections.
2001-11-16 11:21:37 +00:00
4ce43ae0cd
Whitespace nits
2001-11-16 10:25:42 +00:00
d3656d428d
fix a couple of -Wshadow warnings
2001-11-01 07:39:38 +00:00
fa5157d9fb
explicitly set the default compression level to 1 (from the implicit 6),
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because it's significantly faster and doesn't use that much more disk space.
2001-09-12 03:14:08 +00:00
fd08f59ac0
Add "-Z level" to control the compression level that -z uses (which
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defaults to -Z 6). Depending on the relative speed of the CPU
versus disk, "-zZ1" might be faster than no compression at all.
2001-09-12 02:58:29 +00:00
eea41b6f12
Document more explicitly that the kernel must be `secure' according to
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secure_path to be used automatically. (Of course, you can override with the
-N option.)
Addresses bin/13665.
2001-08-20 14:23:59 +00:00
0f1cb57c85
Note usage of getbootfile(3); sort SEE ALSO section according to
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mdoc.samples(7).
2001-06-13 23:24:32 +00:00
f91f11f51f
Use getbootfile(3) instead of _PATH_UNIX by default.
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Sprinkle some const.
2001-06-13 23:16:27 +00:00
73f545bb5b
Drop arguments of .Os.
2001-06-05 11:22:41 +00:00
1547b056d0
If the position of the formatted panic string can be found in the
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message buffer, use that instead of the raw panic string.
Suggested by Jason Thorpe eons ago.
2001-05-06 13:36:51 +00:00
2d48dd26ee
Xref send-pr 1, not 8. Whitespace fixes while I'm here.
2001-04-03 11:17:31 +00:00
1bb8e47f65
Make option flag variables static. This avoids a conflict between
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'int compress' in savecore.c and the function 'compress' in libz.
Gnu ld 2.10 (with BFD 2.10) used on sparc64 warns this conflict
(symbol "compress" changed size).
2001-01-11 20:27:12 +00:00
7e74657e37
use gzip instead of compress
2001-01-02 21:39:37 +00:00
834e92eedc
Bump the field width of `K to go' from 6 to 8; some systems have more
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than 999999 KB of RAM... (this will suffice until it's common to have
~ 100 GB of RAM :)
2001-01-02 00:29:37 +00:00
9bf97e8322
Back out sysctl part for now, awaiting the result of further discussion,
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on request of Andrew Doran.
2000-12-11 14:33:51 +00:00
4c06e7a434
Output proper warning if dumplo == -1 (as it can happen on macppc without
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swap partition), instead of "kvm_dump_mkheader: Pread: Invalid argument".
2000-12-08 22:03:23 +00:00
dogcow