kernel/linux.git/include/linux/sysfs.h, branch linux-2.6.16.y

sysfs: store sysfs inode nrs in s_ino to avoid readdir oopses (CVE-2007-3104)

2007-10-06T22:52:10+00:00

Backport of ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc1/2.6.22-rc1-mm1/broken-out/gregkh-driver-sysfs-allocate-inode-number-using-ida.patch For regular files in sysfs, sysfs_readdir wants to traverse sysfs_dirent->s_dentry->d_inode->i_ino to get to the inode number. But, the dentry can be reclaimed under memory pressure, and there is no synchronization with readdir. This patch follows Tejun's scheme of allocating and storing an inode number in the new s_ino member of a sysfs_dirent, when dirents are created, and retrieving it from there for readdir, so that the pointer chain doesn't have to be traversed. Tejun's upstream patch uses a new-ish "ida" allocator which brings along some extra complexity; this -stable patch has a brain-dead incrementing counter which does not guarantee uniqueness, but because sysfs doesn't hash inodes as iunique expects, uniqueness wasn't guaranteed today anyway. Adrian Bunk: Backported to 2.6.16. Signed-off-by: Eric Sandeen Signed-off-by: Adrian Bunk

[PATCH] sysfs-iattr: add sysfs_setattr

2005-06-20T22:15:37+00:00

o This adds ->i_op->setattr VFS method for sysfs inodes. The changed attribues are saved in the persistent sysfs_dirent structure as a pointer to struct iattr. The struct iattr is allocated only for those sysfs_dirent's for which default attributes are getting changed. Thanks to Jon Smirl for this suggestion. Signed-off-by: Maneesh Soni Signed-off-by: Greg Kroah-Hartman

[PATCH] Make attributes names const char *

2005-06-20T22:15:01+00:00

sysfs: make attributes and attribute_group's names const char * Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

[PATCH] sysfs_{create|remove}_link should take const char *

2005-06-20T22:15:00+00:00

sysfs: make sysfs_{create|remove}_link to take const char * name. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

[PATCH] sysfs: add sysfs_chmod_file()

2005-04-19T04:57:32+00:00

sysfs: allow changing the permissions for already created attributes Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!