linux

History

David Howells 04c567d931 [PATCH] Keys: Fix race between two instantiators of a key Add a revocation notification method to the key type and calls it whilst the key's semaphore is still write-locked after setting the revocation flag. The patch then uses this to maintain a reference on the task_struct of the process that calls request_key() for as long as the authorisation key remains unrevoked. This fixes a potential race between two processes both of which have assumed the authority to instantiate a key (one may have forked the other for example). The problem is that there's no locking around the check for revocation of the auth key and the use of the task_struct it points to, nor does the auth key keep a reference on the task_struct. Access to the "context" pointer in the auth key must thenceforth be done with the auth key semaphore held. The revocation method is called with the target key semaphore held write-locked and the search of the context process's keyrings is done with the auth key semaphore read-locked. The check for the revocation state of the auth key just prior to searching it is done after the auth key is read-locked for the search. This ensures that the auth key can't be revoked between the check and the search. The revocation notification method is added so that the context task_struct can be released as soon as instantiation happens rather than waiting for the auth key to be destroyed, thus avoiding the unnecessary pinning of the requesting process. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-06-22 15:05:56 -07:00
..
ABI	[PATCH] Add kernel<->userspace ABI stability documentation	2006-06-21 12:40:47 -07:00
DocBook	[PATCH] move ->eh_strategy_handler to the transport class	2006-04-10 14:15:47 -04:00
RCU	[PATCH] for_each_possible_cpu: documentaion	2006-03-28 09:16:05 -08:00
aoe	[PATCH] aoe [2/8]: support dynamic resizing of AoE devices	2006-03-23 22:01:55 -08:00
arm	[ARM] 3407/1: lpd7x: documetation update	2006-06-18 16:16:51 +01:00
block	[PATCH] Document online io scheduler switching	2006-04-20 13:04:36 +02:00
cdrom	…
connector	[CONNECTOR]: Use netlink_has_listeners() to avoind unnecessary allocations.	2006-03-20 22:21:40 -08:00
cpu-freq	[CPUFREQ] Update LART site URL	2006-04-03 07:25:54 -05:00
cris	…
crypto	…
device-mapper	…
driver-model	[PATCH] Clean up Documentation/driver-model/overview.txt	2006-02-03 08:31:59 -08:00
drivers/edac	[PATCH] EDAC: documentation spelling fixes	2006-03-26 08:57:08 -08:00
dvb	V4L/DVB (3832): Get_dvb_firmware: download nxt2002 firmware from new driver location	2006-05-12 19:55:17 -03:00
early-userspace	…
fb	[PATCH] Update cyblafb driver	2006-01-09 10:00:36 -08:00
filesystems	[PATCH] inotify (5/5): update kernel documentation	2006-06-20 05:25:19 -04:00
firmware_class	[PATCH] drivers/base/firmware_class.c: cleanups	2006-05-21 12:59:19 -07:00
fujitsu/frv	Documentation: Make fujitsu/frv/kernel-ABI.txt 80 columns wide	2006-04-01 01:38:15 +02:00
hwmon	[PATCH] w83781d: Don't reset the chip by default	2006-03-23 14:21:53 -08:00
i2c	[PATCH] i2c-parport: Make type parameter mandatory	2006-04-14 11:18:34 -07:00
i2o	spelling: s/retreive/retrieve/	2006-01-10 00:10:13 +01:00
i386	…
ia64	…
infiniband	IPoIB: Mention RFC numbers in documentation	2006-06-17 20:37:32 -07:00
input	Input: gamecon - add SNES mouse support	2006-04-02 00:10:05 -05:00
ioctl	spelling: s/appropiate/appropriate/	2006-01-15 02:00:17 +01:00
isdn	[PATCH] i4l gigaset: move sysfs entry to tty class device	2006-06-21 12:40:47 -07:00
kbuild	kbuild: fix garbled text in modules.txt	2006-04-04 15:28:21 +02:00
kdump	[PATCH] kdump: add dmesg gdbmacro into document	2006-01-11 18:42:10 -08:00
m68k	[PATCH] Typo fixes	2006-03-28 09:16:08 -08:00
mips	[MIPS] Update docs to reflect the latest status of the Alchemy IDE driver.	2006-02-14 19:13:23 +00:00
networking	Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2006-06-19 18:55:56 -07:00
parisc	…
pcmcia	[PATCH] pcmcia: convert remaining users of pcmcia_release_io and _irq	2006-03-31 17:15:51 +02:00
power	[PATCH] USB: correct the USB info in Documentation/power/swsusp.txt	2006-06-21 15:04:11 -07:00
powerpc	[PATCH] powerpc: Kill _machine and hard-coded platform numbers	2006-03-28 23:15:54 +11:00
s390	[PATCH] s390: cio documentation update	2006-03-24 07:33:15 -08:00
scsi	[SCSI] aacraid: Update supported product information	2006-06-19 19:23:07 -05:00
serial	[SERIAL] Update parity handling documentation	2006-06-02 17:47:26 +01:00
sh	…
sound	[ALSA] Change an arugment of snd_mpu401_uart_new() to bit flags	2006-06-22 21:33:56 +02:00
sparc	…
spi	[PATCH] SPI: busnum == 0 needs to work	2006-05-16 14:33:57 -07:00
sysctl	[PATCH] suspend-to-ram: allow video options to be set at runtime	2006-02-20 20:00:10 -08:00
telephony	…
uml	…
usb	[PATCH] USB: update usbmon.txt	2006-06-21 15:04:17 -07:00
video4linux	V4L/DVB (3653h): Move usb v4l docs into Documentation/video4linux	2006-04-02 04:55:56 -03:00
vm	[PATCH] Doc: vm/hugetlbpage update-2	2006-04-19 09:13:52 -07:00
w1	[PATCH] W1: Add the DS2482 I2C-to-w1 bridge driver.	2006-03-23 17:28:12 -08:00
watchdog	[WATCHDOG] Documentation/watchdog/watchdog-api.txt - fix watchdog daemon	2006-05-15 21:37:46 +02:00
x86_64	[PATCH] x86_64: Reserve SRAT hotadd memory on x86-64	2006-04-09 11:53:16 -07:00
00-INDEX	…
BUG-HUNTING	Documentation: Update to BUG-HUNTING	2006-03-22 00:37:42 +01:00
Changes	Documentation/Changes: remove outdated translation references	2006-03-20 20:28:13 +01:00
CodingStyle	[PATCH] CodingStyle correction	2006-01-10 08:01:52 -08:00
DMA-API.txt	[PATCH] dma doc updates	2006-04-14 12:25:26 -07:00
DMA-ISA-LPC.txt	…
DMA-mapping.txt	[PATCH] dma doc updates	2006-04-14 12:25:26 -07:00
HOWTO	[PATCH] Added URI of "linux kernel development process"	2006-04-27 13:08:57 -07:00
IO-mapping.txt	…
IPMI.txt	…
IRQ-affinity.txt	…
MSI-HOWTO.txt	…
ManagementStyle	…
PCIEBUS-HOWTO.txt	…
README.DAC960	…
README.cycladesZ	…
SAK.txt	…
SecurityBugs	…
SubmittingDrivers	[PATCH] docs: update some updated code docs	2006-01-14 10:39:53 -08:00
SubmittingPatches	[PATCH] docs: update some updated code docs	2006-01-14 10:39:53 -08:00
VGA-softcursor.txt	…
acpi-hotkey.txt	Fix minor documentation typo	2006-04-01 01:49:22 +02:00
applying-patches.txt	[PATCH] Docs update: typos, corrections and additions to applying-patches.txt	2006-01-10 08:01:54 -08:00
atomic_ops.txt	…
basic_profiling.txt	…
binfmt_misc.txt	…
cachetlb.txt	[PATCH] Add flush_kernel_dcache_page() API	2006-03-26 08:56:53 -08:00
cciss.txt	…
cli-sti-removal.txt	…
computone.txt	…
cpqarray.txt	…
cpu-hotplug.txt	[PATCH] for_each_possible_cpu: documentaion	2006-03-28 09:16:05 -08:00
cpusets.txt	[PATCH] cpuset memory spread basic implementation	2006-03-24 07:33:22 -08:00
cputopology.txt	[PATCH] trivial typos in Documentation/cputopology.txt	2006-03-28 09:16:08 -08:00
dcdbas.txt	…
debugging-modules.txt	…
dell_rbu.txt	…
devices.txt	[PATCH] devices.txt: remove pktcdvd entry	2006-05-15 11:20:58 -07:00
digiepca.txt	…
dnotify.txt	…
dontdiff	…
eisa.txt	…
exception.txt	…
feature-removal-schedule.txt	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bcollins/linux1394-2.6	2006-06-20 20:01:16 -07:00
floppy.txt	…
ftape.txt	…
hayes-esp.txt	…
highuid.txt	…
hpet.txt	Documentation/hpet.txt typo	2006-01-15 02:09:54 +01:00
hrtimers.txt	[PATCH] hrtimer: hrtimer documentation	2006-01-10 08:01:37 -08:00
hw_random.txt	…
ibm-acpi.txt	…
ide.txt	…
initrd.txt	…
io_ordering.txt	…
ioctl-number.txt	[PATCH] arch/i386/kernel/microcode.c: remove the obsolete microcode_ioctl	2006-03-28 09:16:06 -08:00
iostats.txt	…
isapnp.txt	…
java.txt	…
kernel-doc-nano-HOWTO.txt	[PATCH] Doc/kernel-doc: add more usage info	2006-02-01 08:53:27 -08:00
kernel-docs.txt	…
kernel-parameters.txt	[SECMARK]: Add new packet controls to SELinux	2006-06-17 21:30:05 -07:00
keys-request-key.txt	[PATCH] keys: Permit running process to instantiate keys	2006-01-08 20:13:53 -08:00
keys.txt	[PATCH] Keys: Fix race between two instantiators of a key	2006-06-22 15:05:56 -07:00
kobject.txt	…
kprobes.txt	[PATCH] kprobes: Update Documentation/kprobes.txt	2006-02-14 16:09:34 -08:00
kref.txt	…
laptop-mode.txt	[PATCH] docs: laptop-mode.txt source file build	2006-04-11 06:18:44 -07:00
ldm.txt	…
leds-class.txt	[PATCH] LED: class documentation	2006-03-31 12:18:56 -08:00
locks.txt	[PATCH] Docs update: remove obsolete patch from locks.txt	2006-01-10 08:01:54 -08:00
logo.gif	…
logo.txt	…
magic-number.txt	…
mandatory.txt	…
mca.txt	…
md.txt	[PATCH] md: allow sync-speed to be controlled per-device	2006-01-06 08:34:10 -08:00
memory-barriers.txt	[PATCH] Further alterations for memory barrier document	2006-06-10 11:02:05 -07:00
memory.txt	…
mono.txt	…
moxa-smartio	…
mtrr.txt	[PATCH] Doc: fix mtrr userspace programs to build cleanly	2006-04-11 06:18:44 -07:00
mutex-design.txt	[PATCH] mutex subsystem, documentation	2006-01-09 15:59:20 -08:00
nbd.txt	…
nfsroot.txt	[PATCH] Updated Documentation/nfsroot.txt	2006-03-24 07:33:27 -08:00
nmi_watchdog.txt	…
nommu-mmap.txt	…
numastat.txt	…
oops-tracing.txt	[PATCH] doc: refer to kdump in oops-tracing.txt	2006-01-11 18:42:10 -08:00
paride.txt	…
parport-lowlevel.txt	[PATCH] parport: fix documentation	2006-02-03 08:32:06 -08:00
parport.txt	…
pci-error-recovery.txt	[PATCH] Documentation: Updated PCI Error Recovery	2006-02-03 08:32:00 -08:00
pci.txt	[PATCH] PCI: Documentation: no more device ids	2006-04-27 13:00:51 -07:00
pm.txt	[ACPI] linux-acpi@vger.kernel.org replaces acpi-devel@lists.sourceforge.net	2006-01-06 16:19:26 -05:00
pnp.txt	[PATCH] pnp: PNP: adjust pnp_register_driver signature	2006-03-27 08:44:53 -08:00
preempt-locking.txt	…
prio_tree.txt	…
ramdisk.txt	…
riscom8.txt	…
robust-futex-ABI.txt	[PATCH] lightweight robust futexes updates	2006-03-27 08:44:49 -08:00
robust-futexes.txt	[PATCH] lightweight robust futexes updates	2006-03-27 08:44:49 -08:00
rocket.txt	…
rpc-cache.txt	[PATCH] knfsd: Update rpc-cache.txt to match recent changes	2006-03-27 08:44:43 -08:00
rtc.txt	…
sched-arch.txt	…
sched-coding.txt	…
sched-design.txt	…
sched-domains.txt	…
sched-stats.txt	…
seclvl.txt	…
serial-console.txt	[PATCH] doc: more serial-console info	2006-03-25 08:23:00 -08:00
sgi-ioc4.txt	…
sgi-visws.txt	…
sharedsubtree.txt	…
smart-config.txt	kbuild: remove checkconfig.pl	2006-02-19 09:51:22 +01:00
smp.txt	…
sonypi.txt	…
sparse.txt	…
specialix.txt	…
spinlocks.txt	fix rwlock usage example	2006-03-22 00:19:39 +01:00
stable_api_nonsense.txt	…
stable_kernel_rules.txt	[PATCH] Docs update: small fixes to stable_kernel_rules.txt	2006-01-10 08:01:55 -08:00
stallion.txt	…
svga.txt	…
sx.txt	…
sysrq.txt	…
time_interpolators.txt	…
tipar.txt	…
tty.txt	…
unicode.txt	…
unshare.txt	[PATCH] unshare system call -v5: Documentation file	2006-02-07 16:12:34 -08:00
voyager.txt	…
xterm-linux.xpm	…
zorro.txt	…

README.cycladesZ

The Cyclades-Z must have firmware loaded onto the card before it will
operate.  This operation should be performed during system startup,

The firmware, loader program and the latest device driver code are
available from Cyclades at
    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/