Commit Graph

23 Commits

Author SHA1 Message Date
Bruce Evans
60160c5e50 Adjust for kern.ps_strings and PS_STRINGS not being a pointer. This
fixes a type mismatch in the call to kvm_uread().  The bug has gone
undetected for almost 3 years because kvm_uproc()'s protoype has been
disabled for almost 4 years.

Trust sysctlbyname() to work properly if it succeeds.

Fixed style bugs in revs. 1.19 and 1.22.
1998-12-16 18:31:51 +00:00
Dag-Erling Smørgrav
b2d3d0f097 Avoid the "Cannot allocate memory" problem that appears on heavily
loaded systems by retrying the sysctl() with a larger buffer if it
fails with ENOMEM. For good measure, allocate 10% more memory than
sysctl() claims is necessary.

PR:		8275
Reviewed by:	David Greenman <dg@freebsd.org>
1998-10-12 20:36:33 +00:00
Warner Losh
e8420087b0 Replace memory leaking instances of realloc with non-leaking reallocf.
In some cases replace if (a == null) a = malloc(x); else a =
realloc(a, x); with simple reallocf(a, x).  Per ANSI-C, this is
guaranteed to be the same thing.

I've been running these on my system here w/o ill effects for some
time.  However, the CTM-express is at part 6 of 34 for the CAM
changes, so I've not been able to do a build world with the CAM in the
tree with these changes.  Shouldn't impact anything, but...
1998-09-16 04:17:47 +00:00
Doug Rabson
c2ac238c40 The length argument to sysctl is now size_t. 1998-08-25 07:52:33 +00:00
Poul-Henning Kamp
35e6b695d6 Allow /dev/null as path for the "/dev/mem" file, and assume that people
know what they're doing if they do that.  This will allow ps to use
the kvm_proc.c bits without having access to /dev/mem.

Fix kvm_proc.c to not need /dev/mem for access to argv/envp
1998-06-30 21:29:44 +00:00
Bruce Evans
d7fb4b13b9 Fixed bugs in the conversion of kvm to to use procfs in rev.1.3. All
are in kvm_uread():
- the setting of errno before checking it in the lseek() was lost.
- EOF handling was lost.  kvm_uread() retried forever on EOF.  EOF is
  not really an error, but report it one as in rev.1.2.
- reporting of errno after a read error was lost.

Fixed style bugs in rev.1.3 and rev.1.12.

Not fixed: errno is not reported after lseek() failures.
1998-01-16 16:45:05 +00:00
Tor Egge
a58930d8a9 Fill in parent process id when reading process information from a
memory dump. This fixes one of the problems noted in PR kern/3581.
1997-06-25 20:56:48 +00:00
Jordan K. Hubbard
51295a4d3e General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>
1996-07-12 18:57:58 +00:00
Poul-Henning Kamp
44ffb5f593 Pass correct length OID to kernel for KERN_PROC_ALL. 1996-06-06 17:16:52 +00:00
Poul-Henning Kamp
2572133ed3 NBPG -> PAGE_SIZE 1996-05-02 09:23:36 +00:00
Jeffrey Hsu
37e4fbc4cb From Lite2: proc and file LIST changes 1996-03-11 05:34:46 +00:00
Peter Wemm
7350dd84a0 If the two recently added sysctl variables exist, use those rather than
the statically compiled PS_STRINGS and USRSTACK variables.  This prevents
programs using setproctitle from coredumping if the kernel VM is increased,
and stops libkvm users (w, ps, etc) from needing to be recompiled if only
the VM layout changes.
1996-02-24 14:37:30 +00:00
Peter Wemm
b8321444f8 Extract the login name when doing a ps on a dead kernel. 1996-01-01 17:08:17 +00:00
Peter Wemm
6b492ae46d Cosmetic cleanup and documentation of kvm_argv.. Hopefully the flow of
the routine can be much more easily understood now... :-)
1995-12-16 09:25:17 +00:00
Peter Wemm
77721f53be Updates to read the extra indirection in ps_strings. Note that any
static executables that depend on this will need to be relinked (ie: do
this before 'ps'), but the dynamic linked stuff should be OK (ie: 'w')

Obtained from: NetBSD (not much point reinventing the wheel.. :-)
1995-12-09 04:42:51 +00:00
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Joerg Wunsch
ec4f225196 Cast the offset of one call to lseek() to off_t, as it's already done
in all other places here.

This is a hack, the interface should be changed to use off_t's
everywhere around, but this will require to update all the programs
that happen to use libkvm.
1995-03-19 13:33:05 +00:00
Poul-Henning Kamp
12eaa3d55d Remove some unused variables and fix two blatant core dump triggers. 1995-02-24 08:15:27 +00:00
David Greenman
567127fa54 Fix from Gary Jennejohn - use 'cp' not 'buf' in read call. Oops. 1994-11-02 16:38:51 +00:00
Søren Schmidt
5dfe901236 Added spare space on the usr stack. Used in ibcs2 emulation. 1994-10-09 22:03:58 +00:00
David Greenman
338c75418e Made kvm routines use procfs to get out process data such as argument
strings.
1994-08-11 13:38:23 +00:00
Rodney W. Grimes
21d54b076d Fix kvm_i386.c just enough to make it compile and return lots of errors
when called.  Noop out swapread in kvm_proc.c as our vm system is
different.
1994-05-28 05:48:30 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00