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Jeff Moyer 38584c14bb [PATCH] raw: don't allow the creation of a raw device with minor number 0 
Minor number 0 (under the raw major) is reserved for the rawctl device
file, which is used to query, set, and unset raw device bindings.  However,
the ioctl interface does not protect the user from specifying a raw device
with minor number 0:

$ sudo ./raw /dev/raw/raw0 /dev/VolGroup00/swap
/dev/raw/raw0:  bound to major 253, minor 2
$ ls -l /dev/rawctl
ls: /dev/rawctl: No such file or directory
$ ls -l /dev/raw/raw0
crw------- 1 root root 162, 0 Jan 12 10:51 /dev/raw/raw0
$ sudo ./raw -qa
Cannot open master raw device '/dev/rawctl' (No such file or directory)

As you can see, this prevents any further raw operations from
succeeding.  The fix (from Steve Fernandez) is quite simple--do not
allow the allocation of minor number 0.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Cc: Steven Fernandez <sfernand@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-02-11 10:51:34 -08:00
..
acorn [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
acpi [PATCH] wrong order of kzalloc arguments 2007-02-09 08:28:48 -08:00
amba
…
ata libata: kill ATA_ENABLE_PATA 2007-02-09 17:39:40 -05:00
atm [PATCH] Get rid of "double zeroing" of allocated pages 2007-02-11 10:51:31 -08:00
auxdisplay [PATCH] drivers: add LCD support 2007-02-11 10:51:24 -08:00
base [PATCH] Drop __get_zone_counts() 2007-02-11 10:51:18 -08:00
block [PATCH] pktcdvd: cleanup 2007-02-11 10:51:28 -08:00
bluetooth [Bluetooth] Correct SCO buffer for Broadcom based Dell laptops 2007-01-09 00:29:59 -08:00
cdrom [PATCH] cdrom: set default timeout to 7 seconds 2007-01-03 17:32:54 -08:00
char [PATCH] raw: don't allow the creation of a raw device with minor number 0 2007-02-11 10:51:34 -08:00
clocksource [PATCH] clocksource: small cleanup 2006-12-10 09:57:22 -08:00
connector [PATCH] connector: some fixes for ia64 unaligned access errors 2007-01-05 23:55:29 -08:00
cpufreq [CPUFREQ] check sysfs_create_link return value 2007-01-29 00:06:27 -05:00
crypto Merge branch 'HEAD' of master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6 2007-02-08 15:25:18 -08:00
dio
…
dma [PATCH] slab: remove SLAB_KERNEL 2006-12-07 08:39:24 -08:00
edac [PATCH] Add include/linux/freezer.h and move definitions from sched.h 2006-12-07 08:39:27 -08:00
eisa
…
fc4 [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
firmware [PATCH] docbook: add edd firmware interfaces 2007-02-11 10:51:32 -08:00
hid HID: move away from DEBUG defines in favor of CONFIG_HID_DEBUG 2007-02-05 10:00:45 +01:00
hwmon [PATCH] hwmon: ansify 2007-02-09 09:14:06 -08:00
i2c USB: <linux/usb_ch9.h> becomes <linux/usb/ch9.h> 2007-02-07 15:44:32 -08:00
ide [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
ieee1394 ieee1394: fix host device registering when nodemgr disabled 2007-02-08 21:36:22 +01:00
infiniband [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc(). 2007-02-11 10:51:27 -08:00
input [PATCH] Remove unnecessary memset(0) calls after kzalloc() calls. 2007-02-11 10:51:31 -08:00
isdn [PATCH] Char: tty_wakeup cleanup 2007-02-11 10:51:26 -08:00
kvm [PATCH] misc NULL noise removal 2007-02-09 09:14:07 -08:00
leds [PATCH] Fix leds-s3c24xx hardware.h reference 2007-01-05 23:55:21 -08:00
macintosh [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
mca
…
md [PATCH] remove invalidate_inode_pages() 2007-02-11 10:51:31 -08:00
media [PATCH] Get rid of "double zeroing" of allocated pages 2007-02-11 10:51:31 -08:00
message [SCSI] fusion: bump version 2007-01-06 09:32:49 -06:00
mfd [PATCH] Add include/linux/freezer.h and move definitions from sched.h 2006-12-07 08:39:27 -08:00
misc [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
mmc [PATCH] TIFM should depend on PCI - TIFM_CORE leads to use of pci primitives 2007-02-09 08:28:48 -08:00
mtd [PATCH] remove invalidate_inode_pages() 2007-02-11 10:51:31 -08:00
net Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-tc 2007-02-09 09:22:36 -08:00
nubus
…
oprofile [PATCH] struct path: convert oprofile 2006-12-08 08:28:48 -08:00
parisc [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
parport [PATCH] Kconfig refactoring for better menu nesting 2006-12-10 09:55:39 -08:00
pci devres: device resource management 2007-02-09 17:39:36 -05:00
pcmcia [PATCH] m32r: class_device -> device fallout 2007-02-09 08:28:48 -08:00
pnp [PATCH] Remove unnecessary memset(0) calls after kzalloc() calls. 2007-02-11 10:51:31 -08:00
ps3 [POWERPC] PS3: Move vuart declarations to ps3.h 2007-02-07 14:03:20 +11:00
rapidio
…
rtc [PATCH] RTC framework driver for CMOS RTCs 2007-02-11 10:51:32 -08:00
s390 [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
sbus [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
scsi [PATCH] Get rid of "double zeroing" of allocated pages 2007-02-11 10:51:31 -08:00
serial [PATCH] serial: support for new board 2007-02-11 10:51:33 -08:00
sh
…
sn [PATCH] IOC3/IOC4: PCI mem space resources 2007-02-11 10:51:25 -08:00
spi Revert "Driver core: convert SPI code to use struct device" 2007-02-07 21:34:08 -08:00
tc [PATCH] Char: tty_wakeup cleanup 2007-02-11 10:51:26 -08:00
telephony [PATCH] struct path: convert ixj 2006-12-08 08:28:46 -08:00
usb [PATCH] proc: remove useless (and buggy) ->nlink settings 2007-02-11 10:51:32 -08:00
video [TC] pmagb-b-fb: Convert to the driver model 2007-02-09 16:23:18 +00:00
w1 [PATCH] w1: Fix for kconfig entry typo 2006-12-13 09:05:48 -08:00
zorro [PATCH] struct path: convert zorro 2006-12-08 08:28:50 -08:00
Kconfig [PATCH] drivers: add LCD support 2007-02-11 10:51:24 -08:00
Makefile [PATCH] drivers: add LCD support 2007-02-11 10:51:24 -08:00