Commit Graph

3964 Commits

Author SHA1 Message Date
Brian Feldman
bcc92693d4 Previously, the ELF linker would always just store the pointer to a
filename passed in via the module loader functions in the GDB
"sharedlibrary" support structures.  This isn't good, since the pointer
would become stale in almost every case (not the pre-loaded case, of
course).

Change this to malloc()ed copy of the string and finally fix the reason
that gdb -k's "sharedlibrary" command stopped working.

Obtained from:	LOMAC/FreeBSD (cf. NAI Labs)
2001-08-06 14:21:57 +00:00
Chris Costello
c30d4da338 Remove the fildesc_clone() function and its associated unnecessary code.
It didn't implement the proper /dev/fd functionality (which would be to
include in the directory listing /dev/fd/n if the process has fd n open)
anyway.

Anything needing access to /dev/fd/n where n > 2 can use the optional
fdescfs module, which implements this properly and does not cause any
trouble with devfs.

Discussed with:	phk
2001-08-06 05:56:33 +00:00
Thomas Moestl
12543b2e98 Export the tk_nin and tk_nout variables (number of tty input/output
characters) as sysctls (kern.tty_nin and kern.tty_nout).
2001-08-04 18:09:24 +00:00
Thomas Moestl
938a4e5c0c Export the head structure for the device statistics STAILQ in
sys/devicestat.h, so that the queue can be walked in crashdumps using
libkvm.
2001-08-04 18:02:47 +00:00
John Baldwin
c9c1406f76 Add KTR_INTR tracepoints for when clock interrupts are triggered. 2001-08-03 20:54:41 +00:00
Robert Watson
fd6aaf7fe1 Anton kindly pointed out (and fixed) a bug in the Jail handling of the
bind() call on IPv4 sockets:

  Currently, if one tries to bind a socket using INADDR_LOOPBACK inside a
  jail, it will fail because prison_ip() does not take this possibility
  into account.  On the other hand, when one tries to connect(), for
  example, to localhost, prison_remote_ip() will silently convert
  INADDR_LOOPBACK to the jail's IP address.  Therefore, it is desirable to
  make bind() to do this implicit conversion as well.

  Apart from this, the patch also replaces 0x7f000001 in
  prison_remote_ip() to a more correct INADDR_LOOPBACK.

This is a 4.4-RELEASE "during the freeze, thanks" MFC candidate.

Submitted by:	Anton Berezin <tobez@FreeBSD.org>
Discussed with at some point:	phk
MFC after:	3 days
2001-08-03 18:21:06 +00:00
Bosko Milekic
ba3e88262e Rename mb_init() mbuf subsystem initialization routine to mbuf_init(), in
order to avoid namespace collision with subr_mchain.c's mb_init(). This
wasn't "fatal" as the mbuf initialization routine mb_init() was local to
subr_mbuf.c which in turn didn't pull in subr_mchain.c's mb_init()
declaration, but it should deffinately be changed now before it creates
headache.
2001-08-03 05:05:32 +00:00
Jake Burkholder
f74250ca46 Remove some code that appears to have endian problems with INVARIANTS.
This is #if BIG_ENDIAN, but is only necessary if malloc types are shorts,
not struct malloc_type * like they are now.
2001-08-03 03:31:45 +00:00
John Baldwin
b39bc3e160 Use 'p' instead of the potentially more expensive 'curproc' inside of
mi_switch().
2001-08-02 22:15:31 +00:00
Warner Losh
c7021493ba Make the fmt arguments to make_dev and make_dev_alias const char *.
Approved on IRC as long as it didn't cause a large number of warnings by: phk

MFC After: 700 hours
2001-08-02 20:35:35 +00:00
Peter Wemm
aa7a4dae6d Temporarily back out kern_sig.c rev 1.125 and kern_exit.c rev 1.131.
This paniced my one of my machines one time too many :-( and there is
no sign of a solution in the pipeline.  The deltas are still easily
available in cvs.  The problem is that if the parent has been swapped
out, the child process cannot grope around in the parent's UPAGES to
see the sigact[] array or it will fault.  This probably is a showstopper
for this implementation anyway.
2001-08-01 20:35:24 +00:00
Bosko Milekic
bb6f838c79 Move CPU_ABSENT() macro to smp.h, where it belongs anyway. It will be
defined to 0 in the non-SMP case, which very much makes sense as it
permits its usage in per-CPU initialization loops (for an example, check
out subr_mbuf.c).
  Further, on a UP system, make mb_alloc always use the first per-CPU
container, regardless of cpuid (i.e. remove reliability on cpuid in the
UP case).

Requested by: alfred
2001-08-01 00:54:00 +00:00
John Baldwin
36c2e9feb4 Apply the cluebat to myself and undo the await() -> mawait() rename. The
asleep() and await() functions split the functionality of msleep() up into
two halves.  Only the asleep() half (which is what puts the process on the
sleep queue) actually needs the lock usually passed to msleep() held to
prevent lost wakeups.  await() does not need the lock held, so the lock
can be released prior to calling await() and does not need to be passed in
to the await() function.  Typical usage of these functions would be as
follows:

        mtx_lock(&foo_mtx);
        ... do stuff ...
        asleep(&foo_cond, PRIxx, "foowt", hz);
        ...
        mtx_unlock&foo_mtx);
        ...
        await(-1, -1);

Inspired by:	dillon on the couch at Usenix
2001-07-31 22:06:56 +00:00
John Baldwin
e9121d0663 Add a safety belt to mawait() for the (cold || panicstr) case identical to
the one in msleep() such that we return immediately rather than blocking.

Submitted by:	peter
Prodded by:	sheldonh
2001-07-31 20:57:57 +00:00
John Baldwin
5cb0fbe47e If we have already panic'd then don't bother enforcing mutex asserts as
things are pretty much shot already and all panic'ing does is hurt our
chances of getting a dump.

Inspired by:	sheldonh
2001-07-31 17:45:50 +00:00
John Baldwin
32bca5fe03 - Fix panicstr checks to explicitly check against NULL.
- Add a few more panicstr checks so that we don't panic recursively.

Requested by:	sheldonh (2)
2001-07-31 17:44:57 +00:00
Robert Watson
e7f65fdcf9 o Modify p_candebug() such that there is no longer automatic acceptance
of debugging the current process when that is in conflict with other
  restrictions (such as jail, unprivileged_procdebug_permitted, etc).
o This corrects anomolies in the behavior of
  kern.security.unprivileged_procdebug_permitted when using truss and
  ktrace.  The theory goes that this is now safe to use.

Obtained from:	TrustedBSD Project
2001-07-31 17:25:12 +00:00
Robert Watson
0ef5652e27 o Introduce new kern.security sysctl tree for kernel security policy
MIB entries.
o Relocate kern.suser_permitted to kern.security.suser_permitted.
o Introduce new kern.security.unprivileged_procdebug_permitted, which
  (when set to 0) prevents processes without privilege from performing
  a variety of inter-process debugging activities.  The default is 1,
  to provide current behavior.

  This feature allows "hardened" systems to disable access to debugging
  facilities, which have been associated with a number of past security
  vulnerabilities.  Previously, while procfs could be unmounted, other
  in-kernel facilities (such as ptrace()) were still available.  This
  setting should not be modified on normal development systems, as it
  will result in frustration.  Some utilities respond poorly to
  failing to get the debugging access they require, and error response
  by these utilities may be improved in the future in the name of
  beautification.

  Note that there are currently some odd interactions with some
  facilities, which will need to be resolved before this should be used
  in production, including odd interactions with truss and ktrace.
  Note also that currently, tracing is permitted on the current process
  regardless of this flag, for compatibility with previous
  authorization code in various facilities, but that will probably
  change (and resolve the odd interactions).

Obtained from:	TrustedBSD Project
2001-07-31 15:48:21 +00:00
Jake Burkholder
146be906a1 Don't try to find an eventhandler list if the list of lists hasn't
been initialized yet.
2001-07-31 03:52:16 +00:00
Jake Burkholder
98b0e9d587 Don't try to print a field that doesn't exist; in usually commented
out debugging code.
2001-07-31 03:51:07 +00:00
Jake Burkholder
7e5102989e Use a machine dependent type, Elf_Hashelt, for the elements of the elf
dynamic symbol table buckets and chains.  The sparc64 toolchain uses 32
bit .hash entries, unlike other 64 bits architectures (alpha), which use
64 bit entries.

Discussed with: dfr, jdp
2001-07-31 03:46:39 +00:00
Jeroen Ruigrok van der Werven
7b389f3335 Fix obsolete code.
FreeBSD _does_ define ENOMSG, so no need for checking if we support it.

Inspired by PR:		22470
Which was submitted by:	Bjorn Tornqvist <bjorn@west.se>
MFC after:	1 week
2001-07-30 19:28:02 +00:00
Peter Wemm
b219758f94 Revert previous accidental commit. FWIW, it was part of enabling
VM caching of disks through mmap() and stopping syncing of open files
that had their last reference in the fs removed (ie: their unsync'ed
pages get discarded on close already, so I made it stop syncing too).
2001-07-27 15:57:17 +00:00
Peter Wemm
24a590a074 Fix cut/paste blunder. Serves me right for doing a last minute tweak
to what I had for some time.

Submitted by:	bde
2001-07-27 15:52:49 +00:00
Peter Wemm
a03bd29498 Use the tunable maxusers rather than the compile-time one. Evaluate and
initialize in the right order to make derivative settings work right.
eg: at compile time, nmbufs was double nmbclusters.  For POLA this should
work the same at runtime.
2001-07-26 23:08:31 +00:00
Peter Wemm
ee342e1bf1 Move param.c out of the conf directory and make it fully dynamic.
Tunables are now derived at boot time from maxusers.  ie: change maxusers
via a tunable and all the derivative settings change.  You can change
the other tunables individually as well.  Even hz etc is tunable.
2001-07-26 23:04:03 +00:00
Bosko Milekic
49f854f926 - Do not handle the per-CPU containers in mbuf code as though the cpuids
were indices in a dense array. The cpuids are a sparse set and treat
  them as such, setting up containers only for CPUs activated during
  mb_init().

- Fix netstat(1) and systat(1) to treat the per-CPU stats area as a sparse
  map, in accordance with the above.

This allows us to properly boot with certain CPUs disactivated. However, if
we later decide to re-activate said CPUs, we will barf until we decide to
implement CPU spinon/spinoff callback hooks to allow for said CPUs' per-CPU
containers to get configured on their activation.

Reported by: mjacob
Partially (sys/ diffs) Submitted by: mjacob
2001-07-26 18:47:46 +00:00
Bill Fenner
c3cb7e5d7a Don't bother passing p to rtioctl just so it can fail to pass it to mrt_ioctl 2001-07-25 20:15:28 +00:00
Peter Pentchev
7ca4d05f34 Make dynamic sysctl entries start at 0x100, not decimal 100 - there are
static entries with oid's over 100, and defining enough dynamic entries
causes an overlap.

Move the "magic" value 0x100 into <sys/sysctl.h> where it belongs.

PR:		29131
Submitted by:	"Alexander N. Kabaev" <kabaev@mail.ru>
Reviewed by:	-arch, -audit
MFC after:	2 weeks
2001-07-25 17:21:18 +00:00
Peter Pentchev
107e7dc5c3 Style(9): function names on a separate line, max line length 80 chars.
Reviewed by:	-arch, -audit
MFC after:	2 weeks
2001-07-25 17:13:58 +00:00
Dima Dorfman
02bd5400fe sys/kern/tty_snoop.c is now sys/dev/snp/snp.c.
Repo-copy by:	jdp
2001-07-25 12:06:36 +00:00
Assar Westerlund
2b3dc41c15 correct description of `vpp' for mknod/symlink: they are actually
returned locked
2001-07-24 16:16:00 +00:00
Matthew Dillon
4fec48c6fe As per further discussions on hackers redo the SIGCHLD patch to not generate
an unexpected user-visible side effect with the sigaction flags.  Also cleanup
a minor union issue.

Submitted by: Rudolf Cejka <cejkar@dcse.fee.vutbr.cz>
MFC addendum: MFC will be combined w/ original commit
MFC after: 3 days
2001-07-22 18:47:31 +00:00
Assar Westerlund
17b65d5532 revert previous commit (bad style and not needed)
Noticed:	bde
2001-07-22 10:24:31 +00:00
Assar Westerlund
8cfdf32239 add prototype for dosetrlimit 2001-07-22 00:21:19 +00:00
Assar Westerlund
129a62d7c7 add <sys/cdefs.h> (for __unused and such) 2001-07-21 17:12:44 +00:00
John Baldwin
a5dd141db6 Add a missing ~ so that the LO_INITIALIZED flag actually gets turned off
in witness_destroy().
2001-07-20 23:29:25 +00:00
Jonathan Lemon
5f5c2e958f Introduce EVFILT_TIMER, which allows a process to establish an
arbitrary number of timers, both oneshot and periodic.

Repeatedly reminded to commit by: jayanth
Reviewed by: peter (a while back)
2001-07-19 18:34:40 +00:00
Kris Kennaway
2d075e994c Don't use kp->arg0 as a format string, grr.
MFC after:	1 week
2001-07-19 02:18:54 +00:00
Dima Dorfman
ac60b28d35 Keep track of all "struct snoop"'s so that snp_modevent can fail with
EBUSY if there's a device still open.
2001-07-18 13:39:43 +00:00
David E. O'Brien
b46ba8880c Increase NMBCLUSTERS by 4x.
This takes a GENERIC kernel (MAXUSERS=32) from 1536 to 3072.
2001-07-17 15:51:12 +00:00
Peter Wemm
2fc4762c60 Move the hints gunk to a seperate file. It isn't really part of the
newbus structure (no more than subr_rman.c is anyway).
2001-07-14 08:25:18 +00:00
Peter Wemm
9516fbd6d9 Go back to having either static OR dynamic hints, with fallback
support.  Trying to fix the merged set where dynamic overrode
static was getting more and more complicated by the day.

This should fix the duplicate atkbd, psm, fd* etc in GENERIC.  (which
paniced the alpha, but not the i386)
2001-07-14 00:23:10 +00:00
Dima Dorfman
b2c3fa70e3 Correct spelling in a comment and remove trailing newline from a
panic() call (panic() adds it itself).
2001-07-11 02:04:43 +00:00
Dag-Erling Smørgrav
f0cc1c6f81 Constify the fstype argument to vfs_mount(). This eliminates at least one
"call discards qualifier" warning (in sys/compat/linux/linux_file.c).
2001-07-09 19:11:51 +00:00
Guido van Rooij
333ea48563 Don't share sig handlers after an exec
Reviewed by:	Alfred Perlstein
2001-07-09 19:01:42 +00:00
Guido van Rooij
9b956e9897 Get rid of useless bcopy (the next statement was equivalent) 2001-07-09 19:00:08 +00:00
Jake Burkholder
d652b3d918 Backout mwakeup, etc. 2001-07-06 01:16:43 +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
John Baldwin
f583b1d938 Spelling fix in a KASSERT: runq_chose -> runq_choose. 2001-07-04 20:00:48 +00:00