kernel/linux.git/drivers/char/misc.c, branch v2.6.32

seq_file: constify seq_operations

2009-09-23T14:39:29+00:00

Make all seq_operations structs const, to help mitigate against revectoring user-triggerable function pointers. This is derived from the grsecurity patch, although generated from scratch because it's simpler than extracting the changes from there. Signed-off-by: James Morris Acked-by: Serge Hallyn Acked-by: Casey Schaufler Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Driver-Core: extend devnode callbacks to provide permissions

2009-09-19T19:50:38+00:00

This allows subsytems to provide devtmpfs with non-default permissions for the device node. Instead of the default mode of 0600, null, zero, random, urandom, full, tty, ptmx now have a mode of 0666, which allows non-privileged processes to access standard device nodes in case no other userspace process applies the expected permissions. This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman

Driver Core: misc: add nodename support for misc devices.

2009-06-16T04:30:25+00:00

This adds support for misc devices to report their requested nodename to userspace. It also updates a number of misc drivers to provide the needed subdirectory and device name to be used for them. Signed-off-by: Kay Sievers Signed-off-by: Jan Blunck Signed-off-by: Greg Kroah-Hartman

device create: char: convert device_create_drvdata to device_create

2008-10-16T16:24:42+00:00

Now that device_create() has been audited, rename things back to the original call to be sane. Signed-off-by: Greg Kroah-Hartman

device create: char: convert device_create to device_create_drvdata

2008-07-22T04:54:41+00:00

device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Signed-off-by: Greg Kroah-Hartman

misc: cdev lock_kernel() pushdown

2008-06-20T20:05:48+00:00

misc_open() looks fine, but who knows what all of the misc drivers are doing in their open() functions? Signed-off-by: Jonathan Corbet

drivers: use non-racy method for proc entries creation

2008-04-29T15:06:22+00:00

Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev Acked-by: Greg Kroah-Hartman Cc: Alexey Dobriyan Cc: "Eric W. Biederman" Acked-by: Dmitry Torokhov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

PM: Remove destroy_suspended_device()

2008-04-20T02:10:28+00:00

After 2.6.24 there was a plan to make the PM core acquire all device semaphores during a suspend/hibernation to protect itself from concurrent operations involving device objects. That proved to be too heavy-handed and we found a better way to achieve the goal, but before it happened, we had introduced the functions device_pm_schedule_removal() and destroy_suspended_device() to allow drivers to "safely" destroy a suspended device and we had adapted some drivers to use them. Now that these functions are no longer necessary, it seems reasonable to remove them and modify their users to use the normal device unregistration instead. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Greg Kroah-Hartman

Misc: Add possibility to remove misc devices during suspend/resume

2008-02-05T17:44:23+00:00

Make it possible to unregister a misc device object in a safe way during a suspend/resume cycle. Signed-off-by: Rafael J. Wysocki Cc: Michael Buesch Cc: Pavel Machek Cc: "John W. Linville" Cc: Alan Stern Cc: Len Brown Cc: Greg KH Cc: Kay Sievers Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Make /proc/misc use seq_list_xxx helpers

2007-07-16T16:05:42+00:00

Simple and stupid - just use the helpers. Signed-off-by: Pavel Emelianov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds