Commit Graph

117 Commits

Author SHA1 Message Date
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