Commit Graph

91 Commits

Author SHA1 Message Date
Sean Eric Fagan
d99616387e Clear the stop events and wakeup the process on teh last close of the
procfs/mem file.  While this doesn't prevent an unkillable process, it
means that a broken truss prorgam won't do it accidently now (well,
there's a small window of opportunity).  Note that this requires the
change to truss I am about to commit.
1997-12-07 04:01:03 +00:00
Sean Eric Fagan
2a024a2b05 Changes to allow event-based process monitoring and control. 1997-12-06 04:11:14 +00:00
Bruce Evans
1cd52ec333 Don't include <sys/lock.h> in headers when only `struct simplelock' is
required.  Fixed everything that depended on the pollution.
1997-12-05 19:55:52 +00:00
Tor Egge
b872e9c03f Don't try to obtain an excluive lock on the vm map, since a deadlock might
occur if the process owning the map is wiring pages.
1997-11-14 22:57:46 +00:00
Poul-Henning Kamp
4a11ca4e29 Remove a bunch of variables which were unused both in GENERIC and LINT.
Found by:	-Wunused
1997-11-07 08:53:44 +00:00
Bruce Evans
521166c5b2 KNFize rev.1.31. 1997-10-27 15:39:01 +00:00
Bruce Evans
ef91bd5734 Removed unused #includes. The need for most of them went away with
recent changes (docluster* and vfs improvements).
1997-10-27 13:33:47 +00:00
Poul-Henning Kamp
dba3870c10 VFS interior redecoration.
Rename vn_default_error to vop_defaultop all over the place.
Move vn_bwrite from vfs_bio.c to vfs_default.c and call it vop_stdbwrite.
Use vop_null instead of nullop.
Move vop_nopoll from vfs_subr.c to vfs_default.c
Move vop_sharedlock from vfs_subr.c to vfs_default.c
Move vop_nolock from vfs_subr.c to vfs_default.c
Move vop_nounlock from vfs_subr.c to vfs_default.c
Move vop_noislocked from vfs_subr.c to vfs_default.c
Use vop_ebadf instead of *_ebadf.
Add vop_defaultop for getpages on master vnode in MFS.
1997-10-26 20:55:39 +00:00
Poul-Henning Kamp
e9565321ea VFS clean up "hekto commit"
1.  Add defaults for more VOPs
        VOP_LOCK        vop_nolock
        VOP_ISLOCKED    vop_noislocked
        VOP_UNLOCK      vop_nounlock
    and remove direct reference in filesystems.

2.  Rename the nfsv2 vnop tables to improve sorting order.
1997-10-16 22:01:05 +00:00
Poul-Henning Kamp
987f569678 Another VFS cleanup "kilo commit"
1.  Remove VOP_UPDATE, it is (also) an UFS/{FFS,LFS,EXT2FS,MFS}
    intereface function, and now lives in the ufsmount structure.

2.  Remove VOP_SEEK, it was unused.

3.  Add mode default vops:

    VOP_ADVLOCK          vop_einval
    VOP_CLOSE            vop_null
    VOP_FSYNC            vop_null
    VOP_IOCTL            vop_enotty
    VOP_MMAP             vop_einval
    VOP_OPEN             vop_null
    VOP_PATHCONF         vop_einval
    VOP_READLINK         vop_einval
    VOP_REALLOCBLKS      vop_eopnotsupp

    And remove identical functionality from filesystems

4.   Add vop_stdpathconf, which returns the canonical stuff.  Use
     it in the filesystems.  (XXX: It's probably wrong that specfs
     and fifofs sets this vop, shouldn't it come from the "host"
     filesystem, for instance ufs or cd9660 ?)

5.   Try to make system wide VOP functions have vop_* names.

6.   Initialize the um_* vectors in LFS.

(Recompile your LKMS!!!)
1997-10-16 20:32:40 +00:00
Poul-Henning Kamp
cec0f20ce7 VFS mega cleanup commit (x/N)
1.  Add new file "sys/kern/vfs_default.c" where default actions for
    VOPs go. Implement proper defaults for ABORTOP, BWRITE, LEASE,
    POLL, REVOKE and STRATEGY.  Various stuff spread over the entire
    tree belongs here.

2.  Change VOP_BLKATOFF to a normal function in cd9660.

3.  Kill VOP_BLKATOFF, VOP_TRUNCATE, VOP_VFREE, VOP_VALLOC.  These
    are private interface functions between UFS and the underlying
    storage manager layer (FFS/LFS/MFS/EXT2FS).  The functions now
    live in struct ufsmount instead.

4.  Remove a kludge of VOP_ functions in all filesystems, that did
    nothing but obscure the simplicity and break the expandability.
    If a filesystem doesn't implement VOP_FOO, it shouldn't have an
    entry for it in its vnops table.  The system will try to DTRT
    if it is not implemented.  There are still some cruft left, but
    the bulk of it is done.

5.  Fix another VCALL in vfs_cache.c (thanks Bruce!)
1997-10-16 10:50:27 +00:00
Poul-Henning Kamp
6a525123aa Hmm, realign the vnops into two columns. 1997-10-15 10:05:29 +00:00
Poul-Henning Kamp
539ef70c2d Stylistic overhaul of vnops tables.
1. Remove comment stating the blatantly obvious.
        2. Align in two columns.
        3. Sort all but the default element alphabetically.
        4. Remove XXX comments pointing out entries not needed.
1997-10-15 09:22:02 +00:00
John Dyson
99448ed11d Change the M_NAMEI allocations to use the zone allocator. This change
plus the previous changes to use the zone allocator decrease the useage
of malloc by half.  The Zone allocator will be upgradeable to be able
to use per CPU-pools, and has more intelligent usage of SPLs.  Additionally,
it has reasonable stats gathering capabilities, while making most calls
inline.
1997-09-21 04:24:27 +00:00
Peter Wemm
a6aeade2c4 Convert select -> poll.
Delete 'always succeed' select/poll handlers, replaced with generic call.
Flag missing vnode op table entries.
1997-09-14 02:58:12 +00:00
Bruce Evans
bea0f0be7b Some staticized variables were still declared to be extern. 1997-09-07 05:27:26 +00:00
Garrett Wollman
57bf258e3d Fix all areas of the system (or at least all those in LINT) to avoid storing
socket addresses in mbufs.  (Socket buffers are the one exception.)  A number
of kernel APIs needed to get fixed in order to make this happen.  Also,
fix three protocol families which kept PCBs in mbufs to not malloc them
instead.  Delete some old compatibility cruft while we're at it, and add
some new routines in the in_cksum family.
1997-08-16 19:16:27 +00:00
Sean Eric Fagan
66ad7973ce Check permissions for fp regs as well as normal regs. 1997-08-12 05:23:51 +00:00
Sean Eric Fagan
49356a1f4a Fix procfs security hole -- check permissions on meaningful I/Os (namely,
reading/writing of mem and regs).  Also have to check for the requesting
process being group KMEM -- this is a bit of a hack, but ps et al need it.

Reviewed by:	davidg
1997-08-12 04:34:30 +00:00
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Alexander Langer
2c39c8177b Style fix my previous commit. 1997-06-26 16:12:53 +00:00
Alexander Langer
8a77722ad7 Block all write operations to /proc/1/* when securelevel > 0.
The additional check in procfs_ctl.c could be backed out, but
I'm leaving it in for good measure.

Reviewed by:	Theo de Raadt <deraadt@OpenBSD.org>
1997-06-21 16:09:49 +00:00
Alexander Langer
898fcb3b84 Removed bogon from previous commit: doubly included sys/systm.h. 1997-04-27 21:32:21 +00:00
Alexander Langer
ee7877dfec Prevent debugger attachment to init when securelevel > 0.
Noticed by:	Brian Buchanan <brian@wasteland.calbbs.com>
1997-04-27 19:02:37 +00:00
John Dyson
7cac787bee Fix both a problem with accessing backing objects, and also release
the process map on nonexistant pages.
PR:		kern/3327
Submitted by:	Tor Egge <Tor.Egge@idi.ntnu.no>
1997-04-20 17:12:11 +00:00
John Dyson
a04c970a7a Fix the gdb executable modify problem. Thanks to the detective work
by Alan Cox <alc@cs.rice.edu>, and his description of the problem.

The bug was primarily in procfs_mem, but the mistake likely happened
due to the lack of vm system support for the operation.  I added
better support for selective marking of page dirty flags so that
vm_map_pageable(wiring) will not cause this problem again.

The code in procfs_mem is now less bogus (but maybe still a little
so.)
1997-04-06 02:29:45 +00:00
Bruce Evans
fce002fdef Don't include <sys/ioctl.h> in the kernel. Stage 1: don't include
it when it is not used.  In most cases, the reasons for including it
went away when the special ioctl headers became self-sufficient.
1997-03-24 11:25:10 +00:00
Bruce Evans
90106ad38b Fixed missing initialisation of vp->v_type for types Pfile and Pmem
in procfs_allocvp().  This fixes at least stat() of /proc/*/mem.

stat() of /proc/*/file already worked.  I think procfs_allocvp() isn't
actually called for type Pfile.
1997-03-08 16:06:34 +00:00
Bruce Evans
a3d13e5054 Fixed procfs's locking vops. They were missed in the Lite2 merge,
partly because the #define's for them were moved to a different
file.  At least the null VOP_LOCK() no longer works, since vclean()
expects VOP_LOCK( ..., LK_DRAIN | LK_INTERLOCK, ...) to clear the
interlock.  This probably only matters when simple_lock() is not
null, i.e., when there are multiple CPUs or SIMPLELOCK_DEBUG is
defined.
1997-02-24 16:44:11 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Mike Pritchard
724ab19569 Add function prototypes for most of the new Lite2 functions.
Also made a few of the miscfs routines static to be
consistent.  Some modules simply required some additional
#includes to remove -Wall warnings.
1997-02-12 06:52:51 +00:00
John Dyson
996c772f58 This is the kernel Lite/2 commit. There are some requisite userland
changes, so don't expect to be able to run the kernel as-is (very well)
without the appropriate Lite/2 userland changes.

The system boots and can mount UFS filesystems.

Untested: ext2fs, msdosfs, NFS
Known problems: Incorrect Berkeley ID strings in some files.
		Mount_std mounts will not work until the getfsent
		library routine is changed.

Reviewed by:	various people
Submitted by:	Jeffery Hsu <hsu@freebsd.org>
1997-02-10 02:22:35 +00:00
John Dyson
afa07f7e83 Change the map entry flags from bitfields to bitmasks. Allows
for some code simplification.
1997-01-16 04:16:22 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
John Dyson
d700038439 Fix a potential deadlock from the previous commit. 1996-10-30 03:52:57 +00:00
John Dyson
56673451a7 Fix the /proc/???/map file so that it is possible to read an arbitrarily
large process map.  Another commit will follow to fix a problem just found
during this one... Sorry!!! :-(.
1996-10-30 03:45:00 +00:00
John Dyson
c864a7c0a9 Fix setting breakpoints in shared regions. 1996-10-24 02:47:05 +00:00
Bruce Evans
b71fec07db Eliminated nested include of <sys/unistd.h> in <sys/file.h> in the kernel.
Include it directly in the few places where it is used.

Reduced some #includes of <sys/file.h> to #includes of <sys/fcntl.h> or
nothing.
1996-09-03 14:25:27 +00:00
Bruce Evans
e0c95ed947 Fixed the easy cases of const poisoning in the kernel. Cosmetic. 1996-08-31 16:52:44 +00:00
John Dyson
3c087a2f30 Modify slightly the output from the map file in /proc. Now the
executable bit is shown.
1996-07-27 19:47:04 +00:00
John Dyson
34e95a26ec Under certain circumstances, reading the /proc/*/map file can
crash the system.  Nonexistant objects were not handled correctly.
1996-07-27 18:28:10 +00:00
John Dyson
688bbd5b76 Implement locking for pfs nodes, when at the leaf. Concurrent access
to information from a single process causes hangs.  Specifically, this
fixes problems (hangs) with concurrent ps commands, when the system is under
heavy memory load.
Reviewed by:	davidg
1996-07-02 13:38:10 +00:00
John Dyson
c6c4b08e59 Fix a serious problem, with a window where an object lock is needed,
but not there.  The extent of the object lock is expanded to be over the
range that it is needed.  Additionally, clean up the code so that it conforms
to better coding style.
1996-07-02 01:40:52 +00:00
John Dyson
32acf9a16a Add procfs_type.c to the repository. 1996-06-18 05:22:45 +00:00
John Dyson
6ead3edd9c Clean-up the new VM map procfs code, and also add support for executable
format file "etype".  It contains a description of the binary type for
a process.
1996-06-18 05:16:00 +00:00
John Dyson
975dcaa94f This file is the "meat" of the process address space capability. If you
would like other things added, just ask!!!  It might be pretty easy to add.
1996-06-17 22:53:27 +00:00
John Dyson
9353aadd89 Add a feature to procfs to allow display of the process address map
with multiple entries as follows:

	start address, end address, resident pages in range, private pages
		in range, RW/RO, COW or not, (vnode/device/swap/default).
1996-06-17 22:43:36 +00:00
David Greenman
2f9bae59d6 Moved the fsnode MALLOC to before the call to getnewvnode() so that the
process won't possibly block before filling in the fsnode pointer (v_data)
which might be dereferenced during a sync since the vnode is put on the
mnt_vnodelist by getnewvnode.

Pointed out by Matt Day <mday@artisoft.com>
1996-06-12 03:37:57 +00:00
John Dyson
dc48d43a6c Properly lock the vm space when accessing the memory in a process. This
fix could solve some "interesting" problems that could happen during
process rundown.
1996-06-11 23:52:27 +00:00
Jeffrey Hsu
5a18c60a63 For Lite2: proc LIST changes.
Reviewed by:	davidg & bde
1996-03-11 06:13:09 +00:00