kernel/git/stable/linux.git/fs/afs/dynroot.c, branch linux-4.18.y

afs: Fix cell proc list

2018-11-04T13:51:51+00:00

[ Upstream commit 6b3944e42e2e554aa5a4be681ecd70dccd459114 ] Access to the list of cells by /proc/net/afs/cells has a couple of problems: (1) It should be checking against SEQ_START_TOKEN for the keying the header line. (2) It's only holding the RCU read lock, so it can't just walk over the list without following the proper RCU methods. Fix these by using an hlist instead of an ordinary list and using the appropriate accessor functions to follow it with RCU. Since the code that adds a cell to the list must also necessarily change, sort the list on insertion whilst we're at it. Fixes: 989782dcdc91 ("afs: Overhaul cell database management") Signed-off-by: David Howells Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

afs: Display manually added cells in dynamic root mount

2018-06-15T14:27:09+00:00

Alter the dynroot mount so that cells created by manipulation of /proc/fs/afs/cells and /proc/fs/afs/rootcell and by specification of a root cell as a module parameter will cause directories for those cells to be created in the dynamic root superblock for the network namespace[*]. To this end: (1) Only one dynamic root superblock is now created per network namespace and this is shared between all attempts to mount it. This makes it easier to find the superblock to modify. (2) When a dynamic root superblock is created, the list of cells is walked and directories created for each cell already defined. (3) When a new cell is added, if a dynamic root superblock exists, a directory is created for it. (4) When a cell is destroyed, the directory is removed. (5) These directories are created by calling lookup_one_len() on the root dir which automatically creates them if they don't exist. [*] Inasmuch as network namespaces are currently supported here. Signed-off-by: David Howells

afs: Enable IPv6 DNS lookups

2018-06-15T14:27:09+00:00

Remove the restriction on DNS lookup upcalls that prevents ipv6 addresses from being looked up. Signed-off-by: David Howells

afs: Split the dynroot stuff out and give it its own ops tables

2018-04-09T20:54:00+00:00

Split the AFS dynamic root stuff out of the main directory handling file and into its own file as they share little in common. The dynamic root code also gets its own dentry and inode ops tables. Signed-off-by: David Howells