UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers
History
Antonino A. Daplas e400b6ec4e vt/vgacon: Check if screen resize request comes from userspace 
Various console drivers are able to resize the screen via the con_resize()
hook.  This hook is also visible in userspace via the TIOCWINSZ, VT_RESIZE and
VT_RESIZEX ioctl's.  One particular utility, SVGATextMode, expects that
con_resize() of the VGA console will always return success even if the
resulting screen is not compatible with the hardware.  However, this
particular behavior of the VGA console, as reported in Kernel Bugzilla Bug
7513, can cause undefined behavior if the user starts with a console size
larger than 80x25.

To work around this problem, add an extra parameter to con_resize().  This
parameter is ignored by drivers except for vgacon.  If this parameter is
non-zero, then the resize request came from a VT_RESIZE or VT_RESIZEX ioctl
and vgacon will always return success.  If this parameter is zero, vgacon will
return -EINVAL if the requested size is not compatible with the hardware.  The
latter is the more correct behavior.

With this change, SVGATextMode should still work correctly while in-kernel and
stty resize calls can expect correct behavior from vgacon.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-10-16 09:43:20 -07:00
..
acorn/char Remove the arm26 port 2007-07-31 15:39:39 -07:00
acpi more trivial signedness fixes in drivers 2007-10-14 12:41:52 -07:00
amba Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ata docbook: fix libata content 2007-10-15 17:56:36 -07:00
atm more trivial signedness fixes in drivers 2007-10-14 12:41:52 -07:00
auxdisplay cfag12864b fix 2007-08-22 19:52:46 -07:00
base mm: add node states sysfs class attributeS 2007-10-16 09:43:03 -07:00
block deny partial write for loop dev fd 2007-10-16 09:42:55 -07:00
bluetooth [Bluetooth] Add missing stat.byte_rx counter modification 2007-09-09 08:39:27 +02:00
cdrom [POWERPC] iSeries: Move detection of virtual cdroms 2007-10-11 20:40:47 +10:00
char vt/vgacon: Check if screen resize request comes from userspace 2007-10-16 09:43:20 -07:00
clocksource
…
connector [NET]: make netlink user -> kernel interface synchronious 2007-10-10 21:15:29 -07:00
cpufreq Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-10-12 15:49:37 -07:00
crypto [CRYPTO] sha: Add header file for SHA definitions 2007-10-10 16:55:50 -07:00
dca I/OAT: Add DCA services 2007-10-16 09:43:09 -07:00
dio
…
dma I/OAT: Add DCA services 2007-10-16 09:43:09 -07:00
edac Drivers: clean up direct setting of the name of a kset 2007-10-12 14:51:02 -07:00
eisa signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
fc4 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
firewire fw-cdev __user annotations 2007-10-14 12:41:51 -07:00
firmware Driver core: rename ktype_edd and ktype_efivar 2007-10-12 14:51:12 -07:00
hid HID: fix HIDIOCGRDESC memory access in hidraw 2007-10-15 08:12:00 -07:00
hwmon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2007-10-15 13:41:39 -07:00
i2c Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
ide alim15x3: remove redundant m5229_revision check 2007-10-13 17:47:53 +02:00
ieee1394 Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
infiniband IB/ipoib: Verify address handle validity on send 2007-10-15 14:20:45 -04:00
input Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
isdn isdn: guard against a potential NULL pointer dereference in old_capi_manufacturer() 2007-10-16 09:43:10 -07:00
kvm sched: guest CPU accounting: maintain guest state in KVM 2007-10-15 17:00:19 +02:00
leds [ARM] 4576/1: CM-X270 machine support 2007-10-15 18:53:57 +01:00
lguest fix modules oopsing in lguest guests 2007-09-25 08:51:04 -07:00
macintosh Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-10-12 21:27:47 -04:00
mca
…
md dm: emc_endio returns void 2007-10-13 09:41:03 -07:00
media signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
message docbook: fix kernel-api content 2007-10-15 17:56:36 -07:00
mfd
…
misc Map volume and brightness events on thinkpads 2007-10-15 13:54:40 -07:00
mmc spi doesn't need class_device 2007-10-16 09:43:10 -07:00
mtd Reinstate lost flush_ioremap_region() fix to pxa2xx-flash driver 2007-10-15 12:55:20 -07:00
net Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
nubus
…
of
…
oprofile
…
parisc [NET]: Make the device list and device lookups per namespace. 2007-10-10 16:49:10 -07:00
parport parport_pc locking fix 2007-07-31 15:39:37 -07:00
pci Get rid of unused variable warning in drivers/pci/hotplug/pci_hotplug_core.c 2007-10-15 09:07:58 -07:00
pcmcia pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices 2007-10-16 09:42:50 -07:00
pnp drivers/firmware: const-ify DMI API and internals 2007-10-09 20:22:20 -04:00
power Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ps3 ps3: Fix black and white stripes 2007-10-16 09:43:19 -07:00
rapidio
…
rtc rtc: allow validated RTC_PIE_ON for non-root 2007-10-16 09:43:13 -07:00
s390 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
sbus Videopix Frame Grabber: Fix unreleased lock in vfc_debug() 2007-07-31 15:39:43 -07:00
scsi scsi/gdth: fix crash in gdth_timeout if no gdth controllers found 2007-10-15 12:46:16 -07:00
serial tty: bring the old cris driver back somewhere into the realm of new tty buffering 2007-10-16 09:43:04 -07:00
sh sh: Add maple bus support for the SEGA Dreamcast. 2007-09-21 15:55:55 +09:00
sn
…
spi spi doesn't need class_device 2007-10-16 09:43:10 -07:00
ssb missing include in ssb 2007-10-14 08:53:33 -07:00
tc
…
telephony
…
uio
…
usb vt/vgacon: Check if screen resize request comes from userspace 2007-10-16 09:43:20 -07:00
video vt/vgacon: Check if screen resize request comes from userspace 2007-10-16 09:43:20 -07:00
w1 Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
xen
…
zorro zorro: Make sysfs config attribute read-only 2007-08-22 19:52:45 -07:00
Kconfig DCA: Add Direct Cache Access driver 2007-10-16 09:43:09 -07:00
Makefile DCA: Add Direct Cache Access driver 2007-10-16 09:43:09 -07:00