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7a1d27b301
freebsd-skq/sys
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Tor Egge 7a1d27b301 Introduce an advisory exclusive lock on the scsi link structure. 
Change sd_open, sd_close and sd_ioctl to use this lock to ensure
serialization of some critical operations, thus avoiding some
race conditions. Ideas picked from NetBSD (ccd and sd devices).
This fixes one of the problems noted in PR kern/3688.
Reviewed by:	"Justin T. Gibbs" <gibbs@plutotech.com>
1997-06-25 19:07:43 +00:00
..
alpha Grr. Remove not-ready LDT modification fluff that also crept in with 1997-06-02 06:45:17 +00:00
amd64 Ensure that the boot CPU honours write protection in kernel mode. 1997-06-24 17:26:07 +00:00
compat/linux Make this thing actually compile. 1997-06-02 10:43:41 +00:00
compile
conf Synchronize with following changes: 1997-06-23 09:35:47 +00:00
ddb Removed unused #includes. 1997-06-14 11:52:37 +00:00
dev Take the OS release string from the kernel variable `osrelease' 1997-06-24 12:43:18 +00:00
fs Block all write operations to /proc/1/* when securelevel > 0. 1997-06-21 16:09:49 +00:00
geom Removed unused #includes. 1997-06-14 13:56:12 +00:00
gnu Fix a problem with the VN device. Specifically, the VN device can 1997-06-15 17:56:53 +00:00
i386 Do The Right Thing when an iBCS2 program does getgroups(0, whatever) -- we 1997-06-25 01:01:21 +00:00
isa The syscons driver doesn't really check the presence of the display 1997-06-22 12:04:36 +00:00
isofs/cd9660 Hide the kernel-only stuff inside #ifdef KERNEL. 1997-05-07 13:23:04 +00:00
kern Don't ever allow lowering the securelevel at all. Allowing it does 1997-06-25 07:31:47 +00:00
libkern Style optimization in newly added POSIX range []] conformance, redo 1997-06-07 01:33:10 +00:00
miscfs Block all write operations to /proc/1/* when securelevel > 0. 1997-06-21 16:09:49 +00:00
modules Take the OS release string from the kernel variable `osrelease' 1997-06-24 12:43:18 +00:00
msdosfs Remove redundant check for vp == dvp (done in VFS before calling). 1997-05-17 18:32:53 +00:00
net Fix this damn mbuf with a negative m_len. It turns 1997-06-22 02:19:53 +00:00
netatalk Actually POINT to the appletalk usrreqs struct. 1997-06-02 20:07:33 +00:00
netinet Add for public examination the beginnings of the per-host cache support 1997-06-18 01:24:28 +00:00
netipx Mega IPX commit. 1997-05-10 09:58:58 +00:00
netkey
netnatm import Chuck Cranor's ATM driver 1997-05-09 08:04:59 +00:00
netns Remove unneeded member nsp_head from struct nspcb. 1997-04-14 18:26:51 +00:00
nfs Avoid small synchronous writes when an application does lots of random-access 1997-06-25 08:35:41 +00:00
nfsclient Avoid small synchronous writes when an application does lots of random-access 1997-06-25 08:35:41 +00:00
nfsserver Don't require superuser privileges for creating fifos. The v2 case was 1997-06-14 11:19:35 +00:00
pc98 Synchronize with following changes: 1997-06-23 09:35:47 +00:00
pccard Make this puppy compile again - add two includes. 1997-06-01 05:04:39 +00:00
pci Superceded by dc21040reg.h 1997-06-22 09:50:09 +00:00
powerpc/include Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not 1997-02-22 09:48:43 +00:00
rpc Resolve conflicts. 1997-05-28 04:45:15 +00:00
scsi Introduce an advisory exclusive lock on the scsi link structure. 1997-06-25 19:07:43 +00:00
sys Add tickadj to struct clockinfo, like NetBSD and OpenBSD. 1997-06-24 18:21:09 +00:00
tools Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not 1997-02-22 09:48:43 +00:00
ufs Fix a problem with the VN device. Specifically, the VN device can 1997-06-15 17:56:53 +00:00
vm Don't try upgrading an existing exclusive lock in vm_map_user_pageable. 1997-06-23 21:51:03 +00:00
Makefile Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not 1997-02-22 09:48:43 +00:00