Commit Graph

1007 Commits

Author SHA1 Message Date
John Baldwin
6008862bc2 Change callers of mtx_init() to pass in an appropriate lock type name. In
most cases NULL is passed, but in some cases such as network driver locks
(which use the MTX_NETWORK_LOCK macro) and UMA zone locks, a name is used.

Tested on:	i386, alpha, sparc64
2002-04-04 21:03:38 +00:00
Bruce Evans
79065dba2a Moved signal handling and rescheduling from userret() to ast() so that
they aren't in the usual path of execution for syscalls and traps.
The main complication for this is that we have to set flags to control
ast() everywhere that changes the signal mask.

Avoid locking in userret() in most of the remaining cases.

Submitted by:	luoqi (first part only, long ago, reorganized by me)
Reminded by:	dillon
2002-04-04 17:49:48 +00:00
John Baldwin
44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
Bruce Evans
0508986cce In ffs_mountffs(), set mnt_iosize_max to si_iosize_max unconditionally
provided the latter is nonzero.  At this point, the former is a fairly
arbitrary default value (DFTPHYS), so changing it to any reasonable
value specified by the device driver is safe.  Using the maximum of
these limits broke ffs clustered i/o for devices whose si_iosize_max
is < DFLTPHYS.  Using the minimum would break device drivers' ability
to increase the active limit from DFTLPHYS up to MAXPHYS.

Copied the code for this and the associated (unnecessary?) fixup of
mp_iosize_max to all other filesystems that use clustering (ext2fs and
msdosfs).  It was completely missing.

PR:		36309
MFC-after:	1 week
2002-03-30 15:12:57 +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
Bruce Evans
69c59d8703 Fixed some style bugs in the removal of __P(()). Continuation lines
were not outdented to preserve non-KNF lining up of code with parentheses.
Switch to KNF formatting in some cases.
2002-03-24 04:35:23 +00:00
Bruce Evans
b76d0b3217 Fixed some style bugs in the removal of __P(()). Continuation lines
were not outdented to preserve non-KNF lining up of code with parentheses.
Switch to KNF formatting.
2002-03-23 12:38:05 +00:00
Jeff Roberson
2684b6af7a Remove references to vm_zone.h and switch over to the new uma API. 2002-03-20 10:17:00 +00:00
Alfred Perlstein
89c9a48352 Remove __P. 2002-03-20 07:51:46 +00:00
Alfred Perlstein
aa075405f6 Remove __P. 2002-03-20 05:00:21 +00:00
Alfred Perlstein
11caded34f Remove __P. 2002-03-19 22:20:14 +00:00
Kirk McKusick
b70428b2f0 Cannot release vnode underlying the nullfs vnode in null_inactive
as it leaves the nullfs vnode allocated, but with no identity. The
effect is that a null mount can slowly accumulate all the vnodes
in the system, reclaiming them only when it is unmounted. Thus
the null_inactive state instead accelerates the release of the
null vnode by calling vrecycle which will in turn call the
null_reclaim operator. The null_reclaim routine then does the
freeing actions previosuly (incorrectly) done in null_inactive.
2002-03-18 05:39:04 +00:00
Kirk McKusick
a0595d0249 Add a flags parameter to VFS_VGET to pass through the desired
locking flags when acquiring a vnode. The immediate purpose is
to allow polling lock requests (LK_NOWAIT) needed by soft updates
to avoid deadlock when enlisting other processes to help with
the background cleanup. For the future it will allow the use of
shared locks for read access to vnodes. This change touches a
lot of files as it affects most filesystems within the system.
It has been well tested on FFS, loopback, and CD-ROM filesystems.
only lightly on the others, so if you find a problem there, please
let me (mckusick@mckusick.com) know.
2002-03-17 01:25:47 +00:00
Kirk McKusick
0d2af52141 Introduce the new 64-bit size disk block, daddr64_t. Change
the bio and buffer structures to have daddr64_t bio_pblkno,
b_blkno, and b_lblkno fields which allows access to disks
larger than a Terabyte in size. This change also requires
that the VOP_BMAP vnode operation accept and return daddr64_t
blocks. This delta should not affect system operation in
any way. It merely sets up the necessary interfaces to allow
the development of disk drivers that work with these larger
disk block addresses. It also allows for the development of
UFS2 which will use 64-bit block addresses.
2002-03-15 18:49:47 +00:00
Maxim Konovalov
e9fc9230a6 Be consistent with UFS in a way how devfs_setattr() checks credentials
for chmod(2), chown(2) and utimes(2) with respect to jail(2).

Reviewed by:		rwatson, ru
Not objected by:	phk
Approved by:		ru
2002-03-14 11:18:42 +00:00
Poul-Henning Kamp
26facaeb4d If in strategy we find that we have no devsw on the device anymore we
are probably talking about some disk-device which wente away, so
return ENXIO instead of panicing.
2002-03-05 13:25:57 +00:00
John Baldwin
a854ed9893 Simple p_ucred -> td_ucred changes to start using the per-thread ucred
reference.
2002-02-27 18:32:23 +00:00
Thomas Moestl
d2d45a4aa5 Fix LINT breakage by adding a missing include. 2002-02-23 22:55:47 +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
cd9e3b208c Paranoia: if the process is setugid, set all sensitive files mode 0. 2002-02-18 21:41:11 +00:00
Poul-Henning Kamp
76b82a7ffb Don't even think about using v_id for magic tricks, v_id is giving
us enough trouble as it is for SMPng.
2002-02-17 20:39:42 +00:00
Bruce Evans
a21759a1a9 FIxed the following style bugs:
- clobbering of jsp's $Id$ by FreeBSD's old $Id$.
- long lines in recent KSE changes (procfs_ctl.c).
- other style bugs in KSE changes (most related to an shadowed variable
  in procfs_status.c -- the td in the outer scope is obfuscated by
  PFS_FILL_ARGS).

Approved by:	des
2002-02-16 05:59:26 +00:00
Bruce Evans
a76d60f014 FIxed the following style bugs:
- clobbering of jsp's $Id$ by FreeBSD's old $Id$.
- lost Berkeley id in procfs_dbregs.c
- long lines in recent KSE changes.
- various gratuitous differences between procfs_*regs.c.
2002-02-16 05:38:07 +00:00
Bruce Evans
ff3741f519 Fixed missing PHOLD()/PRELE().
Obtained from:	procfs_dbregs.c
Approved by:	des
2002-02-16 04:05:32 +00:00
Poul-Henning Kamp
40f7b5a9cc Various nit-picking, mostly of style(9) character.
Obtained from:	~bde/sys.dif.gz
2002-02-10 22:00:20 +00:00
Robert Watson
74237f55b0 Part I: Update extended attribute API and ABI:
o Modify the system call syntax for extattr_{get,set}_{fd,file}() so
  as not to use the scatter gather API (which appeared not to be used
  by any consumers, and be less portable), rather, accepts 'data'
  and 'nbytes' in the style of other simple read/write interfaces.
  This changes the API and ABI.

o Modify system call semantics so that extattr_get_{fd,file}() return
  a size_t.  When performing a read, the number of bytes read will
  be returned, unless the data pointer is NULL, in which case the
  number of bytes of data are returned.  This changes the API only.

o Modify the VOP_GETEXTATTR() vnode operation to accept a *size_t
  argument so as to return the size, if desirable.  If set to NULL,
  the size will not be returned.

o Update various filesystems (pseodofs, ufs) to DTRT.

These changes should make extended attributes more useful and more
portable.  More commits to rebuild the system call files, as well
as update userland utilities to follow.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-02-10 04:43:22 +00:00
Julian Elischer
079b7badea Pre-KSE/M3 commit.
this is a low-functionality change that changes the kernel to access the main
thread of a process via the linked list of threads rather than
assuming that it is embedded in the process. It IS still embeded there
but remove all teh code that assumes that in preparation for the next commit
which will actually move it out.

Reviewed by: peter@freebsd.org, gallatin@cs.duke.edu, benno rice,
2002-02-07 20:58:47 +00:00
Robert Watson
416031dcb8 Change EPERM to EOPNOTSUPP when failing pseudofs_setattr() arbitrarily.
Quoth the alfred:	The latter would be better.
2002-02-04 18:21:59 +00:00
Robert Watson
dfe5fa8eb7 Return EPERM instead of 0 in the un-implemented pseudofs_setattr().
Conceivably, it should even return EOPNOTSUPP.
2002-02-04 18:09:29 +00:00
Alfred Perlstein
468485b8d2 Fix select on fifos.
Backout revision 1.56 and 1.57 of fifo_vnops.c.

Introduce a new poll op "POLLINIGNEOF" that can be used to ignore
EOF on a fifo, POLLIN/POLLRDNORM is converted to POLLINIGNEOF within
the FIFO implementation to effect the correct behavior.

This should allow one to view a fifo pretty much as a data source
rather than worry about connections coming and going.

Reviewed by: bde
2002-01-14 22:03:48 +00:00
Semen Ustimenko
8a87e8a94f Commit a know fix for hpfs to use vop_defaultop plug instead of wrong
hpfs_bypass() routine.

MFC after:	1 day
2002-01-14 20:13:42 +00:00
Alfred Perlstein
3fc6a31403 don't initialize the mutex in the temporary struct file, the soo_*
functions just grab f_data and don't muck with anything else so this
should be ok.

this fixes a panic with invariants where it thinks we've doubly initialized
the filetmp mutex even though all we've done is neglect to bzero it.
2002-01-14 02:18:59 +00:00
Alfred Perlstein
a4db49537b Replace ffind_* with fget calls.
Make fget MPsafe.

Make fgetvp and fgetsock use the fget subsystem to reduce code bloat.

Push giant down in fpathconf().
2002-01-14 00:13:45 +00:00
Alfred Perlstein
6c697c900f remove unused socket pointer 2002-01-13 22:15:18 +00:00
Alfred Perlstein
9e209b124a Include sys/_lock.h and sys/_mutex.h to reduce namespace pollution.
Requested by: jhb
2002-01-13 21:37:49 +00:00
Alfred Perlstein
426da3bcfb SMP Lock struct file, filedesc and the global file list.
Seigo Tanimura (tanimura) posted the initial delta.

I've polished it quite a bit reducing the need for locking and
adapting it for KSE.

Locks:

1 mutex in each filedesc
   protects all the fields.
   protects "struct file" initialization, while a struct file
     is being changed from &badfileops -> &pipeops or something
     the filedesc should be locked.

1 mutex in each struct file
   protects the refcount fields.
   doesn't protect anything else.
   the flags used for garbage collection have been moved to
     f_gcflag which was the FILLER short, this doesn't need
     locking because the garbage collection is a single threaded
     container.
  could likely be made to use a pool mutex.

1 sx lock for the global filelist.

struct file *	fhold(struct file *fp);
        /* increments reference count on a file */

struct file *	fhold_locked(struct file *fp);
        /* like fhold but expects file to locked */

struct file *	ffind_hold(struct thread *, int fd);
        /* finds the struct file in thread, adds one reference and
                returns it unlocked */

struct file *	ffind_lock(struct thread *, int fd);
        /* ffind_hold, but returns file locked */

I still have to smp-safe the fget cruft, I'll get to that asap.
2002-01-13 11:58:06 +00:00
Mike Smith
a7489fe56f Add a new sysinit SI_SUB_DEVFS. Devfs hooks into the kernel at SI_ORDER_FIRST,
and devices can be created anytime after that.

Print a warning if an atttempt is made to create a device too early.
2002-01-09 04:58:49 +00:00
Mike Smith
92fef27d97 Use a sysinit to initialise the devfs hooks in kern_conf.c rather than common
variables.

Reviewed by:	phk (in principle)
2002-01-09 01:00:20 +00:00
Mike Smith
eeff042fb3 Staticise the coda vfsop pointer. 2002-01-08 19:33:51 +00:00
Mike Smith
7577116e1e Staticise pfs_vncache, it's not used anywhere else.
Reviewed by:	des
2002-01-08 11:15:57 +00:00
Seigo Tanimura
233beff278 Do not derefer null.
Reviewed by:	des
2002-01-04 01:03:46 +00:00
Robert Watson
9c4d63da6d o Make the credential used by socreate() an explicit argument to
socreate(), rather than getting it implicitly from the thread
  argument.

o Make NFS cache the credential provided at mount-time, and use
  the cached credential (nfsmount->nm_cred) when making calls to
  socreate() on initially connecting, or reconnecting the socket.

This fixes bugs involving NFS over TCP and ipfw uid/gid rules, as well
as bugs involving NFS and mandatory access control implementations.

Reviewed by:	freebsd-arch
2001-12-31 17:45:16 +00:00
Matthew Dillon
23b590188f Fix a BUF_TIMELOCK race against BUF_LOCK and fix a deadlock in vget()
against VM_WAIT in the pageout code.  Both fixes involve adjusting
the lockmgr's timeout capability so locks obtained with timeouts do not
interfere with locks obtained without a timeout.

Hopefully MFC: before the 4.5 release
2001-12-20 22:42:27 +00:00
Boris Popov
d9d8c8172d Previous commit was intented to silence a warning, not to change codepath. 2001-12-20 15:56:45 +00:00
Sheldon Hearn
5bd80fc519 Silence harmless "smbfs_closel: Negative opencount" messages at
unmount time.

Thanks to iedowse for the background information.

Submitted by:	bp
2001-12-20 11:23:49 +00:00
Matthew Dillon
08f3c74981 Pseudofs was leaking VFS cache entries badly due to its cache and use of
the wrong VOP descriptor.  This misuse caused VFS-cached vnodes to be
re-cached, resulting in the leak.  This commit is an interim fix until DES
has a chance to rework the code involved.
2001-12-19 23:58:09 +00:00
Sheldon Hearn
53f09e7248 Add module dependency on libmchain.
With this change, mounting an smb share (using mount_smb, which is not
yet included in the tree) without any of smbfs, libiconv or libmchain
compiled into the kernel or loaded works.
2001-12-13 13:08:34 +00:00
Alfred Perlstein
118fdf009f Fix select on named pipes without a reader.
PR: kern/19871
MFC after: 1 month
2001-12-12 09:35:33 +00:00
Brian Feldman
41a35633ba Add VOP_GETEXTATTR(9) passthrough support to pseudofs.
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2001-12-11 20:48:20 +00:00
Dag-Erling Smørgrav
40e7a740c9 Remove an obsolete prototype for procfs_kmemaccess().
Submitted by:	rwatson
2001-12-11 19:07:10 +00:00