6fa9cf7eed
Avoid overflows when reading strings.
2020-04-03 19:09:43 +00:00
91cecf62cf
elide recently introduced warnings that trigger in normal cases, eg:
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savecore: dump_exists:471: kvm_read newdumpmag: _kvm_kvatop(ffffffff8180030c)
2019-11-06 07:29:08 +00:00
926d7d66f0
avoid infinite loop in kmem_check(). fixes bug introduced in previous.
2018-12-27 21:25:46 +00:00
d482d53137
put a bunch of the kvm_read + warn on failure code into a macro that
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describes more about what failed. now errors tell you which actual
variable was being requested instead of simply saying "not yours".
tested on amd64 as working. written for arm64 testing.
2018-11-06 04:07:22 +00:00
52678ac6a4
Adapt funopen(3) call after switch to new zlib(3)
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In the prototype of the gzclose() function of changed from:
typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */
to:
typedef voidp gzFile;
This caused type mismatch when calling funopen(3) as:
'int (*)(void *)' != 'int (*)(struct gzFile_s *)'
Cast gzclose to (int (*)(void *)) when used in funopen(3).
2017-01-10 04:42:20 +00:00
0537635d0c
for 64 bit mips platforms where we built userland largely as n32 by
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default, build a handful of tools as n64 so they work properly.
unfortunately, they're also static as dynamic n64 has a problem.
of these tools pstat is probably the lowest hanging fruit to convert
to sysctl. systat would be close were it not for the netstat screen,
which includes netstat itself.
the rest are difficult to perhaps foolish.
the upside is that netstat, pmap and fstat all work properly now.
2016-12-23 10:19:57 +00:00
c3e11c3703
- avoid using globals where it is simple.
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- simplify: only use stdio for output.
2013-05-13 18:44:11 +00:00
49e3ec350a
Consistent use of return.
2012-12-25 09:24:45 +00:00
ca11e1e667
factor out rawname() from dump, fsck, savecore.
2012-04-07 16:44:10 +00:00
d0e00679ff
Use Lk macro when dealing with URLs. While here update or remove some
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dead URL links. Another part of PR/29238.
2012-03-15 22:35:02 +00:00
42d1e41665
print the missing flag if missing argument...
2011-09-13 19:55:28 +00:00
c94449f6a8
Fix typo.
2011-09-13 08:54:11 +00:00
8b1d441333
document that dumpdir is now optional
2011-09-12 21:22:27 +00:00
7249eb3f75
- always print corrupted dump messages instead of silently failing
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- don't require /var/crash to be specified, default to it
- determine and print the kernel name
- print all messages to syslog
2011-09-12 21:22:07 +00:00
693655118a
static + __dead
2011-08-29 14:29:21 +00:00
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
...
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
maxv