Commit Graph

28 Commits

Author SHA1 Message Date
David Malone
48697608f1 Avoid moving onto a new line while testing if there is a syslog priority
in the buffer. This isn't exactly the patch that Stephen submitted, but
is based on one of his suggestions.

PR:		93841
Submitted by:	Stephen Montgomery-Smith <stephen@math.missouri.edu>
MFC after:	2 weeks
2006-02-27 19:13:47 +00:00
Xin LI
57517b0931 WARNS=6 cleanup:
- signed/unsigned conform.
 - Better initialization of nlist[].  I think we should have
   something like NLIST_NULL instead of the current (ugly)
   form...
2005-01-17 13:56:46 +00:00
Jens Schweikhardt
b8a2c7ca02 Print a usage message if a non-option is specified.
MFC after:	3 weeks
2004-10-13 20:33:18 +00:00
Stefan Farfeleder
4c86f66f52 Don't add integers to void pointers. 2004-10-03 15:48:32 +00:00
Mark Murray
4c723140a4 Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp
2004-04-09 19:58:40 +00:00
Ruslan Ermilov
46fb2e1dbc Not too much point specifying -N but not specifying -M. 2004-03-26 09:24:45 +00:00
Ian Dowse
ccdb237094 Further simplify the code for printing the message buffer:
- Ensure that the buffer ends with "\n\0" to avoid special cases
   and allow the use of strtol().
 - Use strvisx() on each complete line instead of character by
   character.

Submitted by:	bde
MFC after:	1 week
2004-02-08 23:08:53 +00:00
Ian Dowse
59f256ec35 Don't print the oldest line in the message buffer if the buffer is
full, since that line is almost always incomplete. Make the parsing
of <%d> lines more strict.

Also simplify the logic a little:
 - Start off by making the buffer linear so that we don't have to
   deal with it wrapping around (suggested by bde).
 - Process line by line rather than byte at a time.
2004-02-05 21:07:50 +00:00
Ian Dowse
4784a46912 Replace the code for reading and writing the kernel message buffer
with a new implementation that has a mostly reentrant "addchar"
routine, supports multiple message buffers in the kernel, and hides
the implementation details from callers.

The new code uses a kind of sequence number to represend the current
read and write positions in the buffer. This approach (suggested
mainly by bde) permits the read and write pointers to be maintained
separately, which reduces the number of atomic operations that are
required. The "mostly reentrant" above refers to the way that while
it is now always safe to have any number of concurrent writers,
readers could see the message buffer after a writer has advanced
the pointers but before it has witten the new character.

Discussed on:	freebsd-arch
2003-06-22 02:18:31 +00:00
David E. O'Brien
560bb4f8b6 bufpos is used in size_t contexts, so make it one. 2003-05-02 07:08:52 +00:00
Bruce Evans
7309e024bf Include <nlist.h> for nlist interfaces instead of depending on namespace
pollution in <kvm.h>.
2002-08-18 17:57:08 +00:00
Warner Losh
1fa5ae8f93 o Remove __P
o Use ANSI function definitions
o mark usage() as __dead2
2002-03-19 13:29:39 +00:00
Bill Fumerola
bcdb7cc8e4 add -a to usage()
Submitted by:	Ashley Penney <ashp@unloved.org>
MFC after:	3 days
2001-07-14 21:56:04 +00:00
Thomas Moestl
676adc045c Use the kern.msgbuf sysctl to get the message buffer on a running
kernel, and remove setgid kmem, which is not needed any more.
2001-07-03 19:49:31 +00:00
Ruslan Ermilov
f806cd425e Backout -a restriction hack.
Requested by:	rwatson
2001-02-26 08:09:51 +00:00
Ruslan Ermilov
b52c326cfc Restrict -a to root only.
PR:		bin/25337
2001-02-24 10:16:54 +00:00
Poul-Henning Kamp
9d1334552f Add a -a option to show the entire message buffer. 2000-12-17 19:05:17 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Tim Vanderhoek
d6c37912c6 Use an error message that more clearly indites(sp?) an out-of-sync
kernel+userland when that is the case.

PR:		bin/7414
1998-07-27 18:53:45 +00:00
Philippe Charnier
970cd28246 Use .Pa for filenames. Use .Bl/.El in FILES section. Remove unused #includes. 1998-06-04 06:51:14 +00:00
Poul-Henning Kamp
58067a9909 Make the size of the msgbuf (dmesg) a "normal" option. 1998-05-19 08:58:53 +00:00
Warner Losh
8d64695c7c compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.
1997-03-29 03:33:12 +00:00
Peter Wemm
c0ec1f37ef Revert $FreeBSD$ to $Id$ 1997-02-22 14:40:44 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Bruce Evans
301e6a175a Who would have though that dmesg didn't understand message buffers?
Fixed the following bugs:
- the buffer was reprinted endlessly when msg.bufx == 0 and (for a
  different reason) when msg.bufx == 1.
- the last byte of the buffer wasn't printed except in the the infinite
  loop cases.
- the comment about walking the buffer didn't match the (correct) code.
- minor -Wall and style bugs.
Not fixed:
- excessive newline processing which hid the non-printing of the last
  byte of the buffer.
1996-09-21 08:11:22 +00:00
Alexander Langer
b7a8c0221f Add #include <err.h>. 1996-06-19 01:49:01 +00:00
Andrey A. Chernov
8dcf55a40e Add setlocale LC_CTYPE 1995-10-23 23:36:55 +00:00
Rodney W. Grimes
8fae3551ec BSD 4.4 Lite sbin Sources
Note:  XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.
1994-05-26 06:35:07 +00:00