Commit Graph

396 Commits

Author SHA1 Message Date
Marcel Moolenaar
aea0bb5c9b Add a level of indirection to the kernel PTE table. The old
scheme allowed for 1024 PTE pages, each containing 256 PTEs.
This yielded 2GB of KVA. This is not enough to boot a kernel
on a 16GB box and in general too low for a 64-bit machine.
By adding a level of indirection we now have 1024 2nd-level
directory pages, each capable of supporting 2GB of KVA. This
brings the grand total to 2TB of KVA.
2007-05-19 13:11:27 +00:00
John Baldwin
e8865caffb - Move 'struct swdevt' back into swap_pager.h and expose it to userland.
- Restore support for fetching swap information from crash dumps via
  kvm_get_swapinfo(3) to fix pstat -T/-s on crash dumps.

Reviewed by:	arch@, phk
MFC after:	1 week
2007-02-07 17:43:11 +00:00
Warner Losh
5fa78ac5b8 Per Olivier Houchard, use the proper license for this file. He
bogusly used the kvm_powerpc.c file as a template for the license, but
then either wrote the code himself, or cribbed it from the kvm_i386
file.  The only thing from the kvm_powerpc.c file was the license.
Correct this mistake with his blessing.
2007-01-08 18:25:58 +00:00
Warner Losh
67e405315d Remove the advertising clause. UCB did this some time ago, but these
files were never updated to reflect that.

MFC After: 2 days
2007-01-08 17:35:36 +00:00
Julian Elischer
2d2f0b92c7 remove already commented out code 2006-12-06 06:44:20 +00:00
John Birrell
8460a577a4 Make KSE a kernel option, turned on by default in all GENERIC
kernel configs except sun4v (which doesn't process signals properly
with KSE).

Reviewed by:	davidxu@
2006-10-26 21:42:22 +00:00
Kip Macy
cab68f571e unbreak build for sparc64 etc.
TARGET won't be defined on non subarches

Approved by: rwatson (mentor)
Reviewed by: jmg
2006-10-09 05:12:54 +00:00
Kip Macy
ddd5342909 buildworld fixes for sun4v
not sure why pmap.c is included as it is unchanged

Approved by: rwatson (mentor)
Reviewed by: jmg
2006-10-09 04:58:45 +00:00
Wojciech A. Koszek
6e6dfbf26e Don't forget to set internal error message in kvm_nlist().
Approved by:	cognet (mentor)
2006-09-20 12:09:21 +00:00
Ruslan Ermilov
2d05c776ef Remove alpha-specific stuff. 2006-08-23 12:12:56 +00:00
Yaroslav Tykhiy
42e4359156 Rev. 1.44 of this file didn't introduce a right solution,
but we don't seem to have one yet, so just add an XXX comment on
passing rux_runtime to bintime2timeval() wrongly.

Spotted by:	gcc(1) (warning)
2006-07-25 22:39:57 +00:00
Xin LI
60555db2e2 Include strings.h for bzero() 2006-06-05 08:51:14 +00:00
Peter Wemm
e9ca6fe47e Teach libkvm how to read minidumps. It turns out that minidumps are
far more convenient for libkvm to work with because of the page table
block at the beginning.  As a result, the MD code is smaller.

libkvm will automatically detect old vs mini dumps on i386 and amd64.

libkvm will handle i386 PAE and non-PAE modes.  There is a PAE flag in
the i386 minidump header to signal the width of the entries in the
page table block.

Other convenient values are also present, such as kernbase and the direct
map addresses on amd64.
2006-04-21 04:32:51 +00:00
Christian S.J. Peron
65efc5ee23 Validate that the supplied file is not empty before trying mmap(2) it
and access the pages associated with it.

Submitted by:	Wojciech A. Koszek
PR:		bin/91411
MFC after:	1 week
2006-01-15 20:30:13 +00:00
Peter Wemm
add112ff65 Fix a well duplicated fencepost error that stopped crashdumps being
readable on certain random memory configurations.  If the libkvm consumer
tried to read something that was in the very last pdpe, pde or pte slot,
it would bogusly fail.

This is broken in RELENG_6 too.
2005-10-20 05:41:38 +00:00
Olivier Houchard
9960ac47e9 libkvm bits for arm. 2005-10-03 14:21:14 +00:00
Scott Long
dd3d1a98d5 Fix the alpha build by using the correct argument types for _kvm_kvatop().
Submitted by: marcel
Approved by: re (implicit)
2005-07-02 05:49:29 +00:00
Paul Saab
da2ef70999 Match _kvm_kvatop to it's prototype in kvm_i386.c. This unbreaks
the build.

Approved by:	re
2005-06-30 01:25:21 +00:00
Peter Wemm
e55a0cd805 Support crash dumps > 4GB in size on 32 bit platforms. _kvm_kvatop()
returned an lseek offset in a "u_long *" value, which can't express >4GB
offsets on 32 bit machines (eg: PAE).  Change to "off_t *" for all.

Support ELF crashdumps on i386 and amd64.

Support PAE crashdumps on i386.  This is done by auto-detecting the
presence of the IdlePDPT which means that PAE is active.

I used Marcel's _kvm_pa2off strategy and ELF header reader for ELF support
on amd64.  Paul Saab ported the amd64 changes to i386 and we implemented
the PAE support from there.

Note that gdb6 in the src tree uses whatever libkvm supports.  If you want
to debug an old crash dump, you might want to keep an old libkvm.so handy
and use LD_PRELOAD or the like.  This does not detect the old raw dump
format.

Approved by: re
2005-06-29 22:39:41 +00:00
Peter Wemm
2cfe3fda19 Set ki_tdev to NODEV rather than NULL.
Approved by:  re
2005-06-24 00:37:04 +00:00
Pawel Jakub Dawidek
f8197bf090 Make kvm(3) aware of ki_jid field.
Reviewed by:	gad
MFC after:	3 days
2005-03-20 10:37:56 +00:00
Poul-Henning Kamp
9c4fb6619c Dike out unwarranted reference to si_udev. 2005-03-15 14:26:14 +00:00
Ruslan Ermilov
24a0682c64 Sort sections. 2005-01-20 09:17:07 +00:00
David Schultz
7a62aa8a18 In preparation to remove U areas, don't refer to p_uarea in libkvm.
Reviewed by:	arch@
2004-11-20 02:28:26 +00:00
Christian S.J. Peron
668e800b6f Remove un-needed call to close(2). The fd that close is being
called on is invalid and has no use.

Reviewed by:	smkelly
2004-11-13 14:30:34 +00:00
Christian S.J. Peron
2f5d3f6f6a Document the fact that kvm_getenvv(3) requires procfs to be mounted
on /proc in order to operate correctly.

Reviewed by:	simon@, wes@
2004-11-13 14:26:13 +00:00
Peter Wemm
2bdd560907 Belatedly catch up with the dev_t/cdev changes from a few months back.
Extract the struct cdev pointer and the tty device from inside rather than
incorrectly casting the 'struct cdev *' pointer to a 'dev_t' int.  Not
that this was particularly important since it was only used for reading
vmcore files.
2004-10-11 21:56:27 +00:00
John Baldwin
09ff687c38 - Fix the compile to chase the p_rux changes.
- Add a comment noting that the ru_[us]times values being read aren't
  actually valid and need to be computed from the raw values.

Submitted by:	many (1)
2004-10-06 17:10:56 +00:00
Marcel Moolenaar
0c32530bb7 Redefine a PTE as a 64-bit integral type instead of a struct of
bit-fields. Unify the PTE defines accordingly and update all
uses.
2004-09-23 00:05:20 +00:00
Marcel Moolenaar
6d77d031fd The offset argument to mmap(2) is not a pointer. Use 0 instead of NULL. 2004-09-22 20:26:33 +00:00
Julian Elischer
ed062c8d66 Refactor a bunch of scheduler code to give basically the same behaviour
but with slightly cleaned up interfaces.

The KSE structure has become the same as the "per thread scheduler
private data" structure. In order to not make the diffs too great
one is #defined as the other at this time.

The KSE (or td_sched) structure is  now allocated per thread and has no
allocation code of its own.

Concurrency for a KSEGRP is now kept track of via a simple pair of counters
rather than using KSE structures as tokens.

Since the KSE structure is different in each scheduler, kern_switch.c
is now included at the end of each scheduler. Nothing outside the
scheduler knows the contents of the KSE (aka td_sched) structure.

The fields in the ksegrp structure that are to do with the scheduler's
queueing mechanisms are now moved to the kg_sched structure.
(per ksegrp scheduler private data structure). In other words how the
scheduler queues and keeps track of threads is no-one's business except
the scheduler's. This should allow people to write experimental
schedulers with completely different internal structuring.

A scheduler call sched_set_concurrency(kg, N) has been added that
notifies teh scheduler that no more than N threads from that ksegrp
should be allowed to be on concurrently scheduled. This is also
used to enforce 'fainess' at this time so that a ksegrp with
10000 threads can not swamp a the run queue and force out a process
with 1 thread, since the current code will not set the concurrency above
NCPU, and both schedulers will not allow more than that many
onto the system run queue at a time. Each scheduler should eventualy develop
their own methods to do this now that they are effectively separated.

Rejig libthr's kernel interface to follow the same code paths as
linkse for scope system threads. This has slightly hurt libthr's performance
but I will work to recover as much of it as I can.

Thread exit code has been cleaned up greatly.
exit and exec code now transitions a process back to
'standard non-threaded mode' before taking the next step.
Reviewed by:	scottl, peter
MFC after:	1 week
2004-09-05 02:09:54 +00:00
Warner Losh
9e749cc9c5 Expand the license referenced indirectly inline. 2004-07-31 18:49:53 +00:00
Alexander Kabaev
e1f91dbd18 Remove stale code protected by #ifdef sparc. GCC 3.4.x adds sparc to
predefined symbols on all SPARC platforms and FreeBSD follows the crowd.
2004-07-28 05:43:08 +00:00
Ruslan Ermilov
1a0a934547 Mechanically kill hard sentence breaks. 2004-07-02 23:52:20 +00:00
Ruslan Ermilov
862b46f607 Markup, grammar, punctuation. 2004-07-01 18:20:57 +00:00
Garance A Drosehn
1566329b0f Fix a test of bit-flag "P_SA" by adding parenthesis around the expression.
Submitted by:	Cyrille Lefevre
2004-06-23 21:59:56 +00:00
Garance A Drosehn
b7e7c21adf Replace a call to strncpy() with a call to strlcpy()
Submitted by:	Cyrille Lefevre
2004-06-23 21:31:43 +00:00
Garance A Drosehn
276de18cc9 Fill in the some new fields 'struct kinfo_proc', namely ki_childstime,
ki_childutime, and ki_emul.  Also uses the timeradd() macro to correct
the calculation of ki_childtime.  That will correct the value returned
when ki_childtime.tv_usec > 1,000,000.

This also implements a new KERN_PROC_GID option for kvm_getprocs().
It also implements the KERN_PROC_RGID and KERN_PROC_SESSION options
which were added to sys/kern/kern_proc.c revision 1.203.

PR:		bin/65803  (a very tiny piece of the PR)
Submitted by:	Cyrille Lefevre
2004-06-19 14:08:10 +00:00
Poul-Henning Kamp
f3732fd15b Second half of the dev_t cleanup.
The big lines are:
	NODEV -> NULL
	NOUDEV -> NODEV
	udev_t -> dev_t
	udev2dev() -> findcdev()

Various minor adjustments including handling of userland access to kernel
space struct cdev etc.
2004-06-17 17:16:53 +00:00
Julian Elischer
3010536674 This library has to change whenever the kernel process structure changes. 2004-06-16 00:34:31 +00:00
Stefan Farfeleder
1a5ff9285a Avoid assignments to cast expressions.
Reviewed by:	md5
Approved by:	das (mentor)
2004-06-08 13:08:19 +00:00
Peter Wemm
f2b2912599 Implement crashdump decoding for AMD64 as well, now that I have finally
got a sample to test against.
2004-05-19 18:24:13 +00:00
Olivier Houchard
8cffa1b42d Import libkvm MD file for arm. 2004-05-14 12:24:03 +00:00
Jens Schweikhardt
5aaa432dcc Fix a warning: compare u_long ps_strings to 0 instead of NULL. 2004-03-28 11:50:54 +00:00
Ruslan Ermilov
2769244880 Document that kvm_open(3) also accepts "/dev/null" as a special
"corefile" argument, to access the running system via sysctl(3)
if possible, thus not requring special setgid privileges.
2004-03-26 08:05:39 +00:00
Ruslan Ermilov
8a34ef53ab Document that libkvm also uses /dev/kmem, to access KVM. 2004-03-26 08:03:53 +00:00
Daniel Eischen
f3e170bbdb Update man page to reflect additional flag to allow selection of threads. 2004-02-22 18:12:56 +00:00
Daniel Eischen
694127f89c Teach kvm_getprocs() to recognize a sysctl flag for including threads. 2004-02-22 17:57:10 +00:00
Hidetoshi Shimokawa
7928124aa5 Allow to specify a character special device as a core file.
This enable us to use /dev/fwmem* as a core file.
e.g.
	ps -M /dev/fwmem0.0 -N kernel.debug
	dmesg -M /dev/fwmem0.0 -N kernel.debug
	gdb -k -c /dev/fwmem0.0 kernel.debug
You need to set target EUI64 in hw.firewire.fwmem.eui64_hi/lo before
opening the device. On the target arch, (PCI) bus address must be
equivalent to physical address.
(We cannot use this for sparc64 because of IOMMU.)

No objection in: -audit
2003-10-29 14:02:16 +00:00
Bruce Evans
7f75c38230 Fixed some style bugs in the removal of __P(()). Blind removal of
spaces before __P(()) outdented continuation lines to column 0.
2003-10-13 04:44:55 +00:00
Tim J. Robbins
38e9739322 Document KERN_PROC_PROC, update KERN_PROC_ALL description. 2003-09-27 08:22:23 +00:00
Tim J. Robbins
f2dd06ab16 Use the 3-component version of the KERN_PROC_PROC sysctl. 2003-09-27 08:14:37 +00:00
David E. O'Brien
4f4a104ee8 style.Makefile(5) 2003-08-18 15:25:39 +00:00
Gordon Tetlow
41d8423f71 Stage 3 of dynamic root support. Make all the libraries needed to run
binaries in /bin and /sbin installed in /lib. Only the versioned files
reside in /lib, the .so symlink continues to live /usr/lib so the
toolchain doesn't need to be modified.
2003-08-17 08:28:46 +00:00
Poul-Henning Kamp
8d2fd95bc8 Remove unnecssary <vm/swap_pager.h> includes.
These were probably not cleaned up back in whatever murky past these
files were split into separate files.
2003-07-31 21:44:31 +00:00
Poul-Henning Kamp
b8c609915e Remove various unused variables, prototypes and local variables. 2003-07-31 21:42:12 +00:00
Poul-Henning Kamp
5d6fec5b63 Disable and lobotomize the kvm image reading swapinfo code, the kernel
layout is about to change.

The sysctl based method still returns correct information.
2003-07-31 21:38:32 +00:00
Poul-Henning Kamp
5243b6799b Retire the SWIF_DUMP_TREE code, this is in the way for a rework of
the swap_pager layout.
2003-07-31 21:30:28 +00:00
Poul-Henning Kamp
a8818ec991 Unifdef -UDEBUG_SWAPINFO The kernel data structures are about to change. 2003-07-31 20:53:04 +00:00
David Xu
d8406ada91 P_THREADED was renamed to P_SA, follow up. 2003-06-15 03:42:04 +00:00
Marcel Moolenaar
f2c49dd248 Revamp of the syscall path, exception and context handling. The
prime objectives are:
o  Implement a syscall path based on the epc inststruction (see
   sys/ia64/ia64/syscall.s).
o  Revisit the places were we need to save and restore registers
   and define those contexts in terms of the register sets (see
   sys/ia64/include/_regset.h).

Secundairy objectives:
o  Remove the requirement to use contigmalloc for kernel stacks.
o  Better handling of the high FP registers for SMP systems.
o  Switch to the new cpu_switch() and cpu_throw() semantics.
o  Add a good unwinder to reconstruct contexts for the rare
   cases we need to (see sys/contrib/ia64/libuwx)

Many files are affected by this change. Functionally it boils
down to:
o  The EPC syscall doesn't preserve registers it does not need
   to preserve and places the arguments differently on the stack.
   This affects libc and truss.
o  The address of the kernel page directory (kptdir) had to
   be unstaticized for use by the nested TLB fault handler.
   The name has been changed to ia64_kptdir to avoid conflicts.
   The renaming affects libkvm.
o  The trapframe only contains the special registers and the
   scratch registers. For syscalls using the EPC syscall path
   no scratch registers are saved. This affects all places where
   the trapframe is accessed. Most notably the unaligned access
   handler, the signal delivery code and the debugger.
o  Context switching only partly saves the special registers
   and the preserved registers. This affects cpu_switch() and
   triggered the move to the new semantics, which additionally
   affects cpu_throw().
o  The high FP registers are either in the PCB or on some
   CPU. context switching for them is done lazily. This affects
   trap().
o  The mcontext has room for all registers, but not all of them
   have to be defined in all cases. This mostly affects signal
   delivery code now. The *context syscalls are as of yet still
   unimplemented.

Many details went into the removal of the requirement to use
contigmalloc for kernel stacks. The details are mostly CPU
specific and limited to exception_save() and exception_restore().
The few places where we create, destroy or switch stacks were
mostly simplified by not having to construct physical addresses
and additionally saving the virtual addresses for later use.

Besides more efficient context saving and restoring, which of
course yields a noticable speedup, this also fixes the dreaded
SMP bootup problem as a side-effect. The details of which are
still not fully understood.

This change includes all the necessary backward compatibility
code to have it handle older userland binaries that use the
break instruction for syscalls. Support for break-based syscalls
has been pessimized in favor of a clean implementation. Due to
the overall better performance of the kernel, this will still
be notived as an improvement if it's noticed at all.

Approved by: re@ (jhb)
2003-05-16 21:26:42 +00:00
John Baldwin
840558b971 s/procsig/sigacts/ to catch up to procsig and sigacts changes in the kernel.
Approved by:	re (scottl)
2003-05-14 15:01:20 +00:00
Peter Wemm
e472fbeee2 Bandaid for world. jhb gets the pointy hat here and he needs to look at
this.

Approved by:   re (scottl)
2003-05-14 07:28:43 +00:00
Peter Wemm
a1de871d26 AMD64 support; repocopied from i386 2003-04-30 21:05:33 +00:00
Tom Rhodes
225823c590 Add sys/user.h to the list of includes. Without it you lack a definition of
'struct kinfo_proc' for calls to kvm_getargv() and kvm_getenvv().

PR:	51322
2003-04-26 15:00:57 +00:00
Julian Elischer
a0ddbf497b Catch up with the kernel. Move the current cpu indicator to the thread. 2003-04-10 17:41:40 +00:00
Jeff Roberson
42d3ad7144 - Spell SIGSETOR correctly. 2003-04-01 04:49:12 +00:00
Jeff Roberson
31a9779e5d - Catch up with kernel signal changes. 2003-03-31 22:57:55 +00:00
Philippe Charnier
4cacb61823 The .Fn function
The .Fa argument
2003-03-24 15:58:53 +00:00
John Baldwin
8b7a975ed4 Catch up to p_tracep -> p_tracevp rename to unbreak world.
Pointy hat to:	jhb
2003-03-13 21:40:54 +00:00
Julian Elischer
ac2e415327 Change the process flags P_KSES to be P_THREADED.
This is just a cosmetic change but I've been meaning to do it for about a year.
2003-02-27 02:05:19 +00:00
Matthew Dillon
57e6d29b1e Remove all use of the LOG2() macro/inline, undoing some non-optimal cruft
that crept in recently.  GCC will optimize the divides and multiplies for us.

Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after:	1 day
2003-01-11 01:09:51 +00:00
Poul-Henning Kamp
42c43e6031 Make struct swblock kernel only, to make vm/swap_pager.h userland includable.
Move struct swdevt from sys/conf.h to the more appropriate vm/swap_pager.h.
Adjust #include use in libkvm and pstat(8) to match.
2003-01-03 16:23:12 +00:00
Jake Burkholder
3eb81c6900 Teach libkvm to deal with direct mapped addresses. 2002-12-27 01:45:05 +00:00
Ruslan Ermilov
facc67676f mdoc(7) police: Deal with self-xrefs. 2002-12-24 13:41:48 +00:00
Ruslan Ermilov
ae82896268 Consistently mark std(in|out|err) with .Dv, because that's how they
are marked up in stdio(3), and because they are defined expressions
of type "FILE *".

Approved by:	re
2002-12-04 18:57:46 +00:00
Marcel Moolenaar
8aab0cca45 Implement working on ELF corefiles. Use kvm_read() when reading
memory while mapping a virtual address to a physical address.
This allows us to work with virtual addresses for page tables,
provided it doesn't cause infinite recursion. Currently all
page tables are direct mapped.
2002-10-21 04:21:12 +00:00
Thomas Moestl
4ed0293602 Adapt to handle the new sparc64 core dump format correctly.
Reviewed by:	jake
2002-10-20 17:06:50 +00:00
John Baldwin
0d6326492b Catch up to SMTX -> SLOCK changes. 2002-10-02 20:33:52 +00:00
Juli Mallett
e8a58a8362 Ressurect libkvm use of the bitmasked signal list in the kernel, now that
reliable signal queues are gone.
2002-10-01 17:17:32 +00:00
Juli Mallett
1340544372 Fix typo, should zero the kinfo_proc's siglist, not the real one's - the real
one doesn't have one.

Submitted by:	jake, scottl
Big pointed hat that lands one in the badcommitters box to:	jmallett
2002-10-01 00:28:14 +00:00
Juli Mallett
fc256ea463 The list of queued signals is not, can not, and will not be exported to the
userland.  If someone wants to implement a backup p_siglist in the kernel
for compatability and to export one could.  For now, just tell KVM to hand
an empty signal set off to the userland.
2002-09-30 21:40:33 +00:00
Bruce Evans
f86e3350f8 Fixed messes involving $FreeBSD$ starting with one left in the copyright
after adding __FBSDID().

Garbage-collected kvm_readswap().  This was once used by kvm_uread(), but
kvm_uread() now just reads /proc/<pid>/mem and procfs hopefully handles
swapped out pages.
2002-09-16 08:22:57 +00:00
Julian Elischer
4f0db5e08c Allocate KSEs and KSEGRPs separatly and remove them from the proc structure.
next step is to allow > 1 to be allocated per process. This would give
multi-processor threads. (when the rest of the infrastructure is
in place)

While doing this I noticed libkvm and sys/kern/kern_proc.c:fill_kinfo_proc
are diverging more than they should.. corrective action needed soon.
2002-09-15 23:52:25 +00:00
Jacques Vidrine
f76b74d6d7 In kvm_openfiles/kvm_open, mark the file descriptors as close-on-exec.
Applications can not do this themselves, as the descriptors are hidden
behind the opaque `kvm_t' type.
2002-09-11 16:41:39 +00:00
Julian Elischer
71fad9fdee Completely redo thread states.
Reviewed by:	davidxu@freebsd.org
2002-09-11 08:13:56 +00:00
Peter Wemm
0d8293f4ab Hopefully unbreak world. ke_slptime is gone. It should really have been
looking at p_ksegrp.kg_slptime anyway.
2002-08-30 02:18:38 +00:00
Alfred Perlstein
b20ea17938 Allow one to grab the definition of struct ucred by defining _WANT_UCRED
instead of forcing _KERNEL.

Move the include of sys/_label.h in ucred.h under the
_KERNEL || _WANT_UCRED case.
2002-08-28 20:39:48 +00:00
Kris Kennaway
d3cf4981d9 &x is not a format string 2002-08-24 07:15:55 +00:00
Mike Barcroft
abbd890233 o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
  macros, which are only MD because of gratuitous differences between
  architectures.
o Change all headers to make use of this.  This mainly involves
  changing:
    #ifdef _BSD_FOO_T_
    typedef	_BSD_FOO_T_	foo_t;
    #undef _BSD_FOO_T_
    #endif
  to:
    #ifndef _FOO_T_DECLARED
    typedef	__foo_t	foo_t;
    #define	_FOO_T_DECLARED
    #endif

Concept by:	bde
Reviewed by:	jake, obrien
2002-08-21 16:20:02 +00:00
Alfred Perlstein
aa22cbfea7 Hide 'struct ucred' behind '#ifdef _KERNEL', this should stop userland
from attempting to use it for good.  There is a catch, kvm_proc.c needs
to '#define _KERNEL' to get at the ucred.

Requested by: rwatson
2002-08-16 07:01:43 +00:00
Jake Burkholder
5aebb40291 Auto size available kernel virtual address space based on phsyical memory
size.  This avoids blowing out kva in kmeminit() on large memory machines
(4 gigs or more).

Reviewed by:	tmm
2002-08-10 22:14:16 +00:00
Julian Elischer
58551c0393 Don't even read in the thread if it is a zombie process. 2002-06-30 20:13:53 +00:00
Julian Elischer
bff4151c28 grow a brain and do this right. 2002-06-30 17:06:46 +00:00
Julian Elischer
6143c38376 Don't follow non existant thread pointers (e.g. for zombies) 2002-06-30 08:11:30 +00:00
Julian Elischer
e602ba25fd Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
Alfred Perlstein
a82bbc730e Assume __STDC__, remove non-__STDC__ code.
Submitted by: keramida
2002-05-28 17:03:12 +00:00
Jake Burkholder
8a9bbbc50a Catch up to tte.h changes. 2002-05-21 02:22:49 +00:00
David E. O'Brien
2242258dc7 Stub out _kvm_mdopen, we don't the same constants as NetBSD 2002-05-15 09:56:40 +00:00
David E. O'Brien
3a52718aad Add a PowerPC machdep for kvm.
Obtained from:	NetBSD (rev 1.4, pre-UVM)
2002-05-15 09:55:41 +00:00
Dima Dorfman
21687047cf Fix (for the second time) kvm_getprocs() for the case where no
processes match the given criteria.  Since revision 1.60 of malloc.c,
malloc() and friends return an invalid pointer when given a size of 0.
kvm_getprocs() uses sysctl() with a NULL oldp argument to get an
initial size, but does not check whether it's 0 before passing it to
realloc() (via _kvm_realloc()).  Before the aforementioned malloc()
change, this resulted in a minimal allocation made and a valid poitner
returned, but now results in an invalid, but non-NULL, pointer being
returned.  When this is passed to sysctl(), the latter returns EFAULT
(as it should).
2002-04-07 04:47:58 +00:00
David E. O'Brien
1372519b15 Remove multi-line __P() usage. 2002-03-22 09:22:15 +00:00
David E. O'Brien
69160b1eb7 Remove __P() usage. 2002-03-21 23:54:04 +00:00
David E. O'Brien
be04b6d190 Remove 'register' keyword. 2002-03-21 23:39:28 +00:00
Brian Feldman
49b33de841 Also blindly attempt to fix broken world with respect to proc.p_runtime
changes.
2002-02-22 19:10:09 +00:00
Julian Elischer
65e4542fca I THINK this fixes 'make world'
I'll know as soon as I re-import it and compile it.. :-)
 There is no longer a 'pri' strict in the proc struct.
 the fields are scattered between the ksegrp and thread in question.
2002-02-13 00:10:04 +00:00
Julian Elischer
3daf63fc50 pre-emptively fix a KSE/M3 problem.
Make a slight change so that libkvm reaches the main thread via the
linked list, rather than assuming it is in the proc structure. Both
conditions are true in -current but only the first will be true in
the KSE M3 world.
2002-02-07 20:28:25 +00:00
Ruslan Ermilov
fe42e96eff Finish cleanup in kvm.c revisions 1.10 and 1.11 -- mark sf (swapfile)
argument to kvm_open() and kvm_openfiles() as unused.

BSD didn't read swap since kvm.c CSRG revision 5.21 (u-area is pageable
under new VM.  no need to read from swap.)

The old !NEWVM code was removed in CSRG revision 5.23 (~ten years ago).
2002-01-22 10:07:03 +00:00
Jake Burkholder
e5a86020b0 Adapt to new kernel tsb structure. 2001-12-29 06:43:36 +00:00
Ruslan Ermilov
e6cb3c3608 s/processes/files/ inherited from kvm_getprocs(3).
PR:		docs/32252
Submitted by:	tobez
2001-11-24 15:38:28 +00:00
John Baldwin
9c9c290361 Include sys/param.h instead of sys/types.h to get the definition of the
MIN() macro.

Pointy hat to:	rwatson
2001-11-20 08:26:37 +00:00
Robert Watson
b5dfbbe3f3 o Cleanup of includes: user.h may be a catch-all, but that's not
entirely desirable.  Back out previous commit, and clean up includes
  to be more minimal.

Submitted by:	bde
2001-11-19 21:14:50 +00:00
Robert Watson
123f65b0e9 #include <sys/user.h> rather than individually including a plethora
of kernel include files, reducing the replication of kernel include
dependency information in userland.

Obtained from:	TrustedBSD Project
2001-11-19 15:26:36 +00:00
Jake Burkholder
a967158a85 libkvm for sparc64. Only works for kernel memory so far. 2001-11-18 21:01:09 +00:00
Peter Wemm
15d2f5f04f kern.ps_arg_max_cache is a long, not an int. I believe this is half of
what broke ps on ia64.  It probably also broke on alpha, but the fallback
method of using lseek/read on /proc/*/mem to read ps_strings seems to
work there.  It doesn't on ia64 yet.
2001-11-08 00:23:06 +00:00
Doug Rabson
ba94a466fa Implement va->pa translation for kernel virtual addresses. This is
untested - it only seems to be used for crashdumps.
2001-10-25 09:08:21 +00:00
Doug Rabson
983c1b5875 Partially port kvm to ia64 - virtual to physical translation is incomplete. 2001-10-23 11:05:35 +00:00
Bruce Evans
43ea907a42 Backed out "Compensate for header dethreading [mistakes]" mistakes in
alpha files too.
2001-10-13 04:38:46 +00:00
Bruce Evans
6eabd84580 Compensate for "Compensate for header dethreading" by backing it out. 2001-10-10 17:48:44 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Matthew Dillon
e67f5b9fca Implement __FBSDID() 2001-09-16 21:35:07 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Peter Wemm
6f8c6a6977 Make ps -M corefile work again. This has been broken for quite some time.
kvm_proclist() was aborting when it saw the ithreads with no pgrp.
2001-08-24 09:43:44 +00:00
Peter Wemm
f85f304006 Dynamically adjust to the value of KERNBASE in a crashdump, with
a fallback for old kernels without the "kernbase" symbol.
2001-08-24 08:53:30 +00:00
Kris Kennaway
6dac8ac9e5 Mark some functions as __printflike() and/or taking const char * arguments
instead of char *.

MFC after:	2 weeks
2001-08-20 12:53:36 +00:00
Ruslan Ermilov
753d686d34 mdoc(7) police: s/BSD/.Bx/ where appropriate. 2001-08-14 10:01:54 +00:00
Ruslan Ermilov
c75526d5a0 mdoc(7) police: fixed the "new sentence" bogons. 2001-08-10 15:03:10 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Dima Dorfman
70d51341bf mdoc(7) police: remove extraneous .Pp before and/or after .Sh. 2001-07-09 09:54:33 +00:00
Thomas Moestl
e04a7c4ae5 Change this to support the new way swap device information is exported
via sysctl, and clean up some style and (size_t != int) issues.
2001-06-01 22:57:07 +00:00
Robert Watson
b1fc0ec1a7 o Merge contents of struct pcred into struct ucred. Specifically, add the
real uid, saved uid, real gid, and saved gid to ucred, as well as the
  pcred->pc_uidinfo, which was associated with the real uid, only rename
  it to cr_ruidinfo so as not to conflict with cr_uidinfo, which
  corresponds to the effective uid.
o Remove p_cred from struct proc; add p_ucred to struct proc, replacing
  original macro that pointed.
  p->p_ucred to p->p_cred->pc_ucred.
o Universally update code so that it makes use of ucred instead of pcred,
  p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo,
  cr_{r,sv}{u,g}id instead of p_*, etc.
o Remove pcred0 and its initialization from init_main.c; initialize
  cr_ruidinfo there.
o Restruction many credential modification chunks to always crdup while
  we figure out locking and optimizations; generally speaking, this
  means moving to a structure like this:
        newcred = crdup(oldcred);
        ...
        p->p_ucred = newcred;
        crfree(oldcred);
  It's not race-free, but better than nothing.  There are also races
  in sys_process.c, all inter-process authorization, fork, exec, and
  exit.
o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid;
  remove comments indicating that the old arrangement was a problem.
o Restructure exec1() a little to use newcred/oldcred arrangement, and
  use improved uid management primitives.
o Clean up exit1() so as to do less work in credential cleanup due to
  pcred removal.
o Clean up fork1() so as to do less work in credential cleanup and
  allocation.
o Clean up ktrcanset() to take into account changes, and move to using
  suser_xxx() instead of performing a direct uid==0 comparision.
o Improve commenting in various kern_prot.c credential modification
  calls to better document current behavior.  In a couple of places,
  current behavior is a little questionable and we need to check
  POSIX.1 to make sure it's "right".  More commenting work still
  remains to be done.
o Update credential management calls, such as crfree(), to take into
  account new ruidinfo reference.
o Modify or add the following uid and gid helper routines:
      change_euid()
      change_egid()
      change_ruid()
      change_rgid()
      change_svuid()
      change_svgid()
  In each case, the call now acts on a credential not a process, and as
  such no longer requires more complicated process locking/etc.  They
  now assume the caller will do any necessary allocation of an
  exclusive credential reference.  Each is commented to document its
  reference requirements.
o CANSIGIO() is simplified to require only credentials, not processes
  and pcreds.
o Remove lots of (p_pcred==NULL) checks.
o Add an XXX to authorization code in nfs_lock.c, since it's
  questionable, and needs to be considered carefully.
o Simplify posix4 authorization code to require only credentials, not
  processes and pcreds.  Note that this authorization, as well as
  CANSIGIO(), needs to be updated to use the p_cansignal() and
  p_cansched() centralized authorization routines, as they currently
  do not take into account some desirable restrictions that are handled
  by the centralized routines, as well as being inconsistent with other
  similar authorization instances.
o Update libkvm to take these changes into account.

Obtained from:	TrustedBSD Project
Reviewed by:	green, bde, jhb, freebsd-arch, freebsd-audit
2001-05-25 16:59:11 +00:00
Ruslan Ermilov
3ab9a9d0e0 Removed -I${.CURDIR}/.../sys from CFLAGS. 2001-05-18 13:41:42 +00:00
David Malone
d339edcf66 Avoid dividing by zero if kd->procbase->ki_structsize is uninitalised.
(I'm testing the numerator rather than the denominator, which looks
weird, but is the right thing to do here).
2001-05-03 11:26:46 +00:00
Matt Jacob
f045f3077f Do the alpha dance for the change MarkM hath made on the i386 side. 2001-05-02 07:10:52 +00:00
David Malone
0627f53b57 Don't give a warning about "proc size mismatch" if no struct were
returned. (This arose on a list about a month ago when someone
found bogus warnings if they used "ps -Uuser_with_no_processes".)

Approved by:	mckusick
2001-05-01 10:34:15 +00:00
Mark Murray
82633431b3 Compensate for header dethreading. 2001-05-01 09:24:15 +00:00
Ruslan Ermilov
4a558355e5 MAN[1-9] -> MAN. 2001-03-27 17:27:19 +00:00
Peter Wemm
d77052e5fa Find <libkvm.h> in the source tree. This helps standalone builds. 2001-03-21 22:52:48 +00:00
Robert Watson
ae3a37ad44 Adapt libkvm_getswapinfo() to make use of recently committed vm and swap
sysctls exporting swap information.  When running on a live kernel,
the sysctl's will now be used instead of kvm_read, allowing consumers of
this interface to run without privilege (setgid kmem).  Retain the
ability to run on coredumps, or on a kernel using kmem if explicitly
pointed at one.

A side effect of this change is that kvm_getswapinfo() is faster now in
the general case. If the SWIF_DUMP_TREE flag is given (pstat -ss does
this), the radix tree walker, which still uses kvm_read in any case, is
invoked, and therefore does require privilege.

Submitted by:	Thomas Moestl <tmoestl@gmx.net>
Reviewed by:	freebsd-audit
2001-02-23 18:49:16 +00:00
Jake Burkholder
4c85452ba9 Catch up to new priority interface. 2001-02-12 00:21:38 +00:00
Ruslan Ermilov
d0353b836e mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
John Baldwin
6d3e7b9b0b Add a new item to kinfo_proc: ki_sflag to mirror p_sflag. 2001-01-24 12:49:52 +00:00
Garrett Wollman
8b43deacb3 Revert rev. 1.27. This file only included <sys/select.h> because of
brokenness introduced in <sys/select.h> rev. 1.8 which is now OBE.
<sys/tty.h> and <sys/selinfo.h> together do the right thing.
2001-01-20 03:02:46 +00:00
Ruslan Ermilov
32f6256a49 Prepare for mdoc(7)NG. 2001-01-16 09:08:22 +00:00
Ben Smithurst
42680b3a78 Use macro API to <sys/queue.h> 2000-12-30 21:52:34 +00:00
Kirk McKusick
1f7d250182 Change the proc information returned from the kernel so that it
no longer contains kernel specific data structures, but rather
only scalar values and structures that are already part of the
kernel/user interface, specifically rusage and rtprio. It no
longer contains proc, session, pcred, ucred, procsig, vmspace,
pstats, mtx, sigiolst, klist, callout, pasleep, or mdproc. If
any of these changed in size, ps, w, fstat, gcore, systat, and
top would all stop working. The new structure has over 200 bytes
of unassigned space for future values to be added, yet is nearly
100 bytes smaller per entry than the structure that it replaced.
2000-12-12 07:25:57 +00:00
David E. O'Brien
1a37aa566b Add `_PATH_DEVZERO'.
Use _PATH_* where where possible.
2000-12-09 09:35:55 +00:00
Alfred Perlstein
b217bcfe47 remove unneded sys/ucred.h include 2000-11-30 18:34:08 +00:00
Ruslan Ermilov
726b61ab5f Avoid use of direct troff requests in mdoc(7) manual pages. 2000-11-10 17:46:15 +00:00
Brian Feldman
1da729a59e Good, fixing the header showed incorrect usage of it! #define _KERNEL
here for the include of sys/select.h.
2000-08-06 17:03:09 +00:00
Kris Kennaway
ba3c0383aa Limit the amount of data copied to the error buffer to _POSIX2_LINE_MAX.
This is the documented size which the user-provided buffer must be.
2000-08-04 09:23:07 +00:00
Kris Kennaway
03b96d11a8 Remove obsolete reference to /var/db/kvm_kernel.db
Reviewed by:	peter
2000-05-07 02:16:43 +00:00
Alexey Zelkin
7f5e8c848c Introduce .Lb macro to libkvm manpages.
Use .Pa macro for "enlighting" path
2000-04-22 16:10:12 +00:00
Jonathan Lemon
d707aa564d Remove unneeded #include 2000-04-16 17:36:48 +00:00
Jacques Vidrine
91a594d823 Change the return value of kvm_read/kvm_write to be -1 on error, to
match the documented interface.

Previously it returned 0 on error.

PR:		bin/10511
2000-03-31 15:04:25 +00:00
David E. O'Brien
b787589098 -Wall, which caught a real bug where buflen wasn't being set properly. 2000-03-27 00:33:45 +00:00
Peter Wemm
392cc8343e Correct an error message presumably as a result of cut/paste.
kvm_getfiles() referred to itself as kvm_getprocs().
2000-02-18 16:39:00 +00:00
Chris Costello
fd3e261bae Repair misspelled `.Pp' directive:
.PP -> .Pp
2000-02-14 01:35:15 +00:00
Rodney W. Grimes
d05257b0f2 Replace beforeinstall target with new variables used by .mk system.
Reviewed by:	marcel, and make world
2000-01-14 07:57:47 +00:00
Bruce Evans
604d32ca3b Fixed missing includes in synopsis. <sys/file.h> went missing when KERNEL
was not updated to _KERNEL.  Actually including <sys/file.h> as specified
never actually worked, since a prerequisite was missing.
2000-01-05 16:38:58 +00:00
Peter Wemm
c447342094 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 05:07:58 +00:00
Peter Wemm
c4a7cdb3b6 Use kldsym(2) to lookup symbol values. This avoids the kvm_mkdb juggling
and is module aware.  Yes, this means that kvm_nlist(3) will find symbols
in loaded modules.  The emulation of the nlist struct is pretty crude but
seems to work well enough for all the users in the tree that I found.
1999-12-27 07:14:58 +00:00
Poul-Henning Kamp
c464420c89 Report swapdevices as cdevs rather than bdevs.
Remove unused dev2budev() function.
1999-11-29 21:37:18 +00:00
Poul-Henning Kamp
b9df5231ca Introduce commandline caching in the kernel.
This fixes some nasty procfs problems for SMP, makes ps(1) run much faster,
and makes ps(1) even less dependent on /proc which will aid chroot and
jails alike.

To disable this facility and revert to previous behaviour:
        sysctl -w kern.ps_arg_cache_limit=0

For full details see the current@FreeBSD.org mail-archives.
1999-11-16 20:31:58 +00:00
Peter Wemm
8771870c76 Delete the sf (swapfile) arg to an internal function that used to point to
/dev/drum but has not been used for a LONG time.
Add $FreeBSD$
1999-10-11 05:01:17 +00:00
Peter Wemm
59c9cd2bce Install <kvm.h> from here (after repo copy) so it's all in one package. 1999-10-04 14:56:04 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Peter Wemm
a4add9a9b1 $Id$ -> $FreeBSD$ 1999-08-27 23:45:13 +00:00
Bruce Evans
480bc7e108 Don't open the swap file. The open descriptor for it hasn't been used
for over 5 years since we switched to using procfs for kvm_uread().
This cleanup was motivated by recent breakage of the default swap file
(/dev/drum) when swapon() has not been called.
1999-08-25 03:01:54 +00:00
Nik Clayton
fbc400a67a Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

     .\"    $Id$
     .\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by:            bde
1999-07-12 20:50:10 +00:00
Peter Wemm
bf0e1ee370 Tidy up references to <sys/rlist.h> and support for the old swap management
that went away in January.
1999-05-11 14:32:18 +00:00
Bruce Evans
34597fa67f Oops, the previous log message should have been:
Include <machine/ansi.h> so that this file is self-sufficient again.
Rev.1.6 doesn't do this as claimed unless <nlist.h> has nonstandard
pollution.

Cleaned up includes.
1999-04-10 03:49:43 +00:00
Bruce Evans
95a7753b24 Declare mkstemps(). 1999-04-09 15:06:56 +00:00
Andrew Gallatin
cad59f82df make libkvm capable of dealing with a crashdump on alphas
Reviewed by: Doug Rabson <dfr@nlsystems.com>
1999-03-12 14:47:33 +00:00
Bruce Evans
114d756447 Don't use u_long in the synopsis, since u_long is not part of the kvm
interface.
1999-03-05 17:32:53 +00:00
Dmitrij Tejblum
bd54ec1edf From rev. 1.12 of usr.sbin/pstat/pstat.c by phk:
Reflect the fact that we do not swap on the first <dmmax> blocks of a
swapdev, to protect disklabels and other such magic stuff.
1999-02-14 21:42:05 +00:00
Matthew Dillon
f3401d0c26 Handle case where no swap is configured 1999-02-06 06:31:57 +00:00
Bruce Evans
45908a6a19 Removed evil typedef kvm_swap_t and all uses of it (not many).
Hoped for by:	wollman
1999-01-27 11:29:15 +00:00
Matthew Dillon
876c5c1135 Fix swap radix tree dump formatting ( pstat -ss ), it was printing the
wrong radix for recursive subnodes.
1999-01-25 04:07:07 +00:00
Bruce Evans
9bcaf304c6 Fixed missing cross reference to kvm_getfiles.
This man page may be overdoing the cross references by referencing
man pages that are just links to other pages that are referenced.

kvm_uread() is still completely undocumented in kvm*.3.
1999-01-23 08:12:12 +00:00
Bruce Evans
8bb84da720 Fixed unsorting of SRCS and MAN3 in previous commit.
Sorted MLINKS.
1999-01-23 07:55:15 +00:00
Bruce Evans
9457cf9c59 Fixed unsorting of cross references in previous commit. 1999-01-23 07:34:56 +00:00
Matthew Dillon
b8808468dd Oops, forgot this. Needed by libkvm. 1999-01-23 04:58:35 +00:00
Matthew Dillon
6a389e5182 Fix type-o's in manual 1999-01-22 11:03:55 +00:00
Matthew Dillon
a14dedd13c Add SWIF_DEV_PREFIX flag to add "/dev/..." to device name. 1999-01-22 10:57:03 +00:00
Matthew Dillon
e92324a21e Implement kvm_getswapinfo() libkvm function. Will be used by
pstat, top, and systat.
1999-01-22 10:36:04 +00:00
Bruce Evans
bc701368b4 <sys/types.h> isn't a prerequisite for <kvm.h>. 1998-12-16 19:12:14 +00:00
Bruce Evans
424a876474 The previous commit was bogus. <stdlib.h> was never a prerequisite
for <kvm.h> or kvm_getloadavg(), and <sys/types.h> was only a
prerequisite for <kvm.h> when <kvm.h> was broken.
1998-12-16 19:04:54 +00:00
Bruce Evans
b245b90a64 Declare size_t and ssize_t if they are not already declared, so that
<kvm.h> is self-sufficient again.

Moved typedefs and forward struct declarations out of __BEGIN_DECLS/
__END_DECLS.

Don't comment out the prototype for kvm_uread().  This was a 4 year
old kludge for previous breakage of self-sufficiency.  The prototypwe
was broken instead.

Fixed bitrot (const poisoning) in the type of kvm_uread().

Fixed order of the declaration of kvm_uread().
1998-12-16 18:59:47 +00:00
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
Matthew Dillon
36058b68da Add required #include references to manual page 1998-12-13 02:32:59 +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
Doug Rabson
4fab6203a9 Adjust the declarations of kvm_read and kvm_write to match reality a little
closer.
1998-09-16 09:30:14 +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
KATO Takenori
d7feb25bdf Change ${MACHINE} into ${MACHINE_ARCH} to support MACHINE=pc98. 1998-09-09 11:27:33 +00:00
Doug Rabson
c2ac238c40 The length argument to sysctl is now size_t. 1998-08-25 07:52:33 +00:00
Gary Palmer
253ab58f6f Nuke unsupported architecture files 1998-08-22 14:34:59 +00:00
Doug Rabson
36fe61fe12 Add an alpha machdep for kvm. The vatop functions are stubbed out for
now (mainly because I haven't ported them from the NetBSD crash dump
environment).

Obtained from: NetBSD
1998-08-15 12:12:22 +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