Commit Graph

96 Commits

Author SHA1 Message Date
Dag-Erling Smørgrav
38efe50cbd Remove VFS_STATFS() call which violated the lock order and wasn't
really required anyway.

PR:		kern/61994
Submitted by:	Bjoern Groenvall <bg@sics.se>
2004-02-09 20:33:42 +00:00
Robert Watson
09dbf7a214 Correct for proper vn_fullpath() failure mode: "== -1" -> "!= 0"
Discussed with:	des
2004-01-12 03:14:37 +00:00
Alan Cox
277b62040d Lock the traversal of the vm object list. Use TAILQ_FOREACH consistently. 2004-01-02 19:29:31 +00:00
Dag-Erling Smørgrav
3f907e34d7 Use mp_ncpus instead of the hw.ncpu sysctl. 2003-12-07 17:38:20 +00:00
Olivier Houchard
c92dcdd99c Various style and type fixes in my last commit.
Suggested by:	mux
2003-10-20 04:10:20 +00:00
Olivier Houchard
faf1e14786 Implement partially /proc/<pid>/maps.
It looks enough to make SImics run.

Reviewed by:	des
2003-10-19 14:13:51 +00:00
Andrew Gallatin
1827b9e9c9 make kernel_sysctl()'s args match its prototype in order to fix the
alpha build
2003-10-08 18:05:59 +00:00
Dag-Erling Smørgrav
7ea97b6027 Fix a (fortunately harmless) signed / unsigned bug. 2003-09-30 13:35:19 +00:00
Dag-Erling Smørgrav
e705f0f0f9 Previous commit contained too-smart-for-its-own-good code that might
produce incorrect (though harmless) output on single-CPU systems.
2003-09-22 16:05:11 +00:00
Dag-Erling Smørgrav
e54c4ad8ac Fake multi-cpu statistics for proc/stat by dividing the totals by the
number of CPUs.

PR:		kern/27522
2003-09-22 15:52:32 +00:00
Dag-Erling Smørgrav
7d10d0554c Fix some broken comments. 2003-09-09 19:22:55 +00:00
Dag-Erling Smørgrav
0dd872f5bb Add cwd, root and statm (modeled on a 2.4.20 kernel). De-obfuscate
linprocfs_init() a little and remove some gratuitous whitespace.
2003-09-09 08:19:06 +00:00
Dag-Erling Smørgrav
9a69494e8b Whitespace cleanup. 2003-08-18 13:30:15 +00:00
Marcel Moolenaar
3e25ce2310 Cleanup <machine/cpu.h> by moving MD prototypes to <machine/md_var.h>
like we have on other platforms. Move savectx() to <machine/pcb.h>.
A lot of files got these MD prototypes through the indirect inclusion
of <machine/cpu.h> and now need to include <machine/md_var.h>. The
number of which is unexpectedly large...

osf1_misc.c especially is tricky because szsigcode is redefined in
one of the osf1 header files. Reordering of the include files was
needed.

linprocfs.c now needs an explicit extern declaration.

Tested with: LINT
2003-08-17 06:42:08 +00:00
Dag-Erling Smørgrav
bccbc20f63 Add support for multiple CPUs to cpuinfo. 2003-08-04 10:55:22 +00:00
Poul-Henning Kamp
567104a148 Add a new function swap_pager_status() which reports the total size of the
paging space and how much of it is in use (in pages).

Use this interface from the Linuxolator instead of groping around in the
internals of the swap_pager.
2003-07-18 10:26:09 +00:00
David E. O'Brien
16dbc7f228 Use __FBSDID(). 2003-06-10 21:29:12 +00:00
John Baldwin
90af4afacb - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
John Baldwin
418e9d1b9e P_SHOULDSTOP used to be p_stat == SSTOP and needed the sched_lock, now it
is protected by the proc lock and doesnt' need sched_lock, so adjust the
locking appropriately.
2003-04-17 21:58:45 +00:00
John Baldwin
4bedc36141 Fix multiple printf warnings on Alpha:
- Prefer long long to quad_t to match printf args.
- Use uintmax_t and %j to print segsz_t and vm_size_t values.
- Fix others in Alpha-specific code.
2003-04-16 19:46:26 +00:00
John Baldwin
b62f75cf44 - Change the linux_[gs]et_os{name, release, s_version}() functions to
take a thread instead of a proc for their first argument.
- Add a mutex to protect the system-wide Linux osname, osrelease, and
  oss_version variables.
- Change linux_get_prison() to take a thread instead of a proc for its
  first argument and to use td_ucred rather than p_ucred.  This is ok
  because a thread's prison does not change even though it's ucred might.
- Also, change linux_get_prison() to return a struct prison * instead of
  a struct linux_prison * since it returns with the struct prison locked
  and this makes it easier to safely unlock the prison when we are done
  messing with it.
2003-03-13 22:45:43 +00:00
Poul-Henning Kamp
f341ca9891 Remove #include <sys/dkstat.h> 2003-02-16 14:13:23 +00:00
Jeffrey Hsu
b30a244c34 SMP locking for ifnet list. 2002-12-22 05:35:03 +00:00
Julian Elischer
1dab89f156 Remove the process state PRS_WAIT.
It is never used. I left it there from pre-KSE days as I didn't know
if I'd need it or not but now I know I don't.. It's functionality
is in TDI_IWAIT in the thread.
2002-10-21 22:27:36 +00:00
Juli Mallett
1d9c56964d Back our kernel support for reliable signal queues.
Requested by:	rwatson, phk, and many others
2002-10-01 17:15:53 +00:00
Juli Mallett
1226f694e6 First half of implementation of ksiginfo, signal queues, and such. This
gets signals operating based on a TailQ, and is good enough to run X11,
GNOME, and do job control.  There are some intricate parts which could be
more refined to match the sigset_t versions, but those require further
evaluation of directions in which our signal system can expand and contract
to fit our needs.

After this has been in the tree for a while, I will make in kernel API
changes, most notably to trapsignal(9) and sendsig(9), to use ksiginfo
more robustly, such that we can actually pass information with our
(queued) signals to the userland.  That will also result in using a
struct ksiginfo pointer, rather than a signal number, in a lot of
kern_sig.c, to refer to an individual pending signal queue member, but
right now there is no defined behaviour for such.

CODAFS is unfinished in this regard because the logic is unclear in
some places.

Sponsored by:	New Gold Technology
Reviewed by:	bde, tjr, jake [an older version, logic similar]
2002-09-30 20:20:22 +00:00
Jake Burkholder
05ba50f522 Use the fields in the sysentvec and in the vm map header in place of the
constants VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS, USRSTACK and PS_STRINGS.
This is mainly so that they can be variable even for the native abi, based
on different machine types.  Get stack protections from the sysentvec too.
This makes it trivial to map the stack non-executable for certain abis, on
machines that support it.
2002-09-21 22:07:17 +00:00
Julian Elischer
71fad9fdee Completely redo thread states.
Reviewed by:	davidxu@freebsd.org
2002-09-11 08:13:56 +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
John Baldwin
f44d9e24fb Change p_can{debug,see,sched,signal}()'s first argument to be a thread
pointer instead of a proc pointer and require the process pointed to
by the second argument to be locked.  We now use the thread ucred reference
for the credential checks in p_can*() as a result.  p_canfoo() should now
no longer need Giant.
2002-05-19 00:14:50 +00:00
John Baldwin
590ae816c2 - p_cansee() needs the target process locked.
- We need the proc lock held for more of procfs_doprocstatus().
2002-04-13 23:09:41 +00:00
John Baldwin
65c9b4303b - Change fill_kinfo_proc() to require that the process is locked when it
is called.
- Change sysctl_out_proc() to require that the process is locked when it
  is called and to drop the lock before it returns.  If this proves too
  complex we can change sysctl_out_proc() to simply acquire the lock at
  the very end and have the calling code drop the lock right after it
  returns.
- Lock the process we are going to export before the p_cansee() in the
  loop in sysctl_kern_proc() and hold the lock until we call
  sysctl_out_proc().
- Don't call p_cansee() on the process about to be exported twice in
  the aforementioned loop.
2002-04-09 20:10:46 +00:00
Alfred Perlstein
e9b192b758 Protect proc struct (p_args and p_comm) when doing procfs IO that pulls
data from it.

Submitted by: Jonathan Mini <mini@haikugeek.com>
2002-03-29 19:12:40 +00:00
Jeff Roberson
851031501a Remove references to vm_zone.h and switch over to the new uma API. 2002-03-20 10:35:22 +00:00
Julian Elischer
bc9f367b48 remove "discards qualifier" erro by not potentially writing to
a const *.
2002-02-26 23:38:34 +00:00
Seigo Tanimura
f591779bb5 Lock struct pgrp, session and sigio.
New locks are:

- pgrpsess_lock which locks the whole pgrps and sessions,
- pg_mtx which protects the pgrp members, and
- s_mtx which protects the session members.

Please refer to sys/proc.h for the coverage of these locks.

Changes on the pgrp/session interface:

- pgfind() needs the pgrpsess_lock held.

- The caller of enterpgrp() is responsible to allocate a new pgrp and
  session.

- Call enterthispgrp() in order to enter an existing pgrp.

- pgsignal() requires a pgrp lock held.

Reviewed by:	jhb, alfred
Tested on:	cvsup.jp.FreeBSD.org
		(which is a quad-CPU machine running -current)
2002-02-23 11:12:57 +00:00
Dag-Erling Smørgrav
157b65ae7f Pull in more stuff from procfs now that it's been pseudofsized. 2001-12-09 00:38:59 +00:00
Robert Watson
011376308f o Introduce pr_mtx into struct prison, providing protection for the
mutable contents of struct prison (hostname, securelevel, refcount,
  pr_linux, ...)
o Generally introduce mtx_lock()/mtx_unlock() calls throughout kern/
  so as to enforce these protections, in particular, in kern_mib.c
  protection sysctl access to the hostname and securelevel, as well as
  kern_prot.c access to the securelevel for access control purposes.
o Rewrite linux emulator abstractions for accessing per-jail linux
  mib entries (osname, osrelease, osversion) so that they don't return
  a pointer to the text in the struct linux_prison, rather, a copy
  to an array passed into the calls.  Likewise, update linprocfs to
  use these primitives.
o Update in_pcb.c to always use prison_getip() rather than directly
  accessing struct prison.

Reviewed by:	jhb
2001-12-03 16:12:27 +00:00
Matthew Dillon
59ea846905 promote tv_sec in printf to make it type agnostic 2001-10-29 02:17:41 +00:00
Poul-Henning Kamp
71ab1fa5df Reporting device drivers by traversing cdevsw[] is at best a hack
which may or may not return something which is partially right.

Disable the "devices" file until we find out what this is needed for,
and what exactly those apps need.

This will allow cdevsw to become static again.

Approved by:	DES
2001-10-26 15:30:44 +00:00
Dag-Erling Smørgrav
7936569b00 Add proc/mtab which simulates a Linux system's /etc/mtab. 2001-10-21 15:56:46 +00:00
Dag-Erling Smørgrav
a55f7148f1 #if 0 out some code that depends on other uncommitted patches. 2001-10-19 01:52:13 +00:00
Dag-Erling Smørgrav
1c0bfd6e3a Adapt to pseudofs changes (dynamic initialization, not static).
Use the new linux_ifname() function from the linuxulator rather than roll
our own interface name translation.
2001-10-19 01:45:03 +00:00
Dag-Erling Smørgrav
e4fea9d1dd Catch up with the visibility callback stuff, and give up trying to keep the
file definitions on single lines.
2001-10-01 04:31:05 +00:00
Dag-Erling Smørgrav
a73a153aff Specify readability and / or writeability for all nodes that need it. 2001-09-30 19:42:41 +00:00
Dag-Erling Smørgrav
2bb3ce0c47 Adapt to pseudofs version 2. Sorry about the breakage - I had this ready
to commit along with the pseudofs patches, but just plain forgot.
2001-09-29 22:07:13 +00:00
Dag-Erling Smørgrav
689364858e Clean up my source tree to avoid getting hit too badly by the next KSE or
whatever mega-commit.  No real functional changes, just some experiments /
work in progress.
2001-09-25 13:24:24 +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
Robert Watson
a0f75161f9 o Replace calls to p_can(..., P_CAN_xxx) with calls to p_canxxx().
The p_can(...) construct was a premature (and, it turns out,
  awkward) abstraction.  The individual calls to p_canxxx() better
  reflect differences between the inter-process authorization checks,
  such as differing checks based on the type of signal.  This has
  a side effect of improving code readability.
o Replace direct credential authorization checks in ktrace() with
  invocation of p_candebug(), while maintaining the special case
  check of KTR_ROOT.  This allows ktrace() to "play more nicely"
  with new mandatory access control schemes, as well as making its
  authorization checks consistent with other "debugging class"
  checks.
o Eliminate "privused" construct for p_can*() calls which allowed the
  caller to determine if privilege was required for successful
  evaluation of the access control check.  This primitive is currently
  unused, and as such, serves only to complicate the API.

Approved by:	({procfs,linprocfs} changes) des
Obtained from:	TrustedBSD Project
2001-07-05 17:10:46 +00:00
Dag-Erling Smørgrav
336d3d2ab3 Say one thing, do the other... nextpid -> lastpid 2001-06-11 23:00:35 +00:00