kernel/git/stable/linux.git/fs/afs/proc.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: Fix cell specification to permit an empty address list

2018-10-10T06:55:57+00:00

[ Upstream commit ecfe951f0c1b169ea4b7dd6f3a404dfedd795bc2 ] Fix the cell specification mechanism to allow cells to be pre-created without having to specify at least one address (the addresses will be upcalled for). This allows the cell information preload service to avoid the need to issue loads of DNS lookups during boot to get the addresses for each cell (500+ lookups for the 'standard' cell list[*]). The lookups can be done later as each cell is accessed through the filesystem. Also remove the print statement that prints a line every time a new cell is added. [*] There are 144 cells in the list. Each cell is first looked up for an SRV record, and if that fails, for an AFSDB record. These get a list of server names, each of which then has to be looked up to get the addresses for that server. E.g.: dig srv _afs3-vlserver._udp.grand.central.org Signed-off-by: David Howells Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

afs: Show all of a server's addresses in /proc/fs/afs/servers

2018-06-15T04:52:59+00:00

Show all of a server's addresses in /proc/fs/afs/servers, placing the second plus addresses on padded lines of their own. The current address is marked with a star. Signed-off-by: David Howells

afs: Implement network namespacing

2018-05-23T11:01:15+00:00

Implement network namespacing within AFS, but don't yet let mounts occur outside the init namespace. An additional patch will be required propagate the network namespace across automounts. Signed-off-by: David Howells

afs: Mark afs_net::ws_cell as __rcu and set using rcu functions

2018-05-23T10:51:29+00:00

The afs_net::ws_cell member is sometimes used under RCU conditions from within an seq-readlock. It isn't, however, marked __rcu and it isn't set using the proper RCU barrier-imposing functions. Fix this by annotating it with __rcu and using appropriate barriers to make sure accesses are correctly ordered. Without this, the code can produce the following warning: >> fs/afs/proc.c:151:24: sparse: incompatible types in comparison expression (different address spaces) Fixes: f044c8847bb6 ("afs: Lay the groundwork for supporting network namespaces") Reported-by: kbuild test robot Signed-off-by: David Howells

afs: Rearrange fs/afs/proc.c to remove remaining predeclarations.

2018-05-18T10:46:15+00:00

Rearrange fs/afs/proc.c to get rid of all the remaining predeclarations. Signed-off-by: David Howells

afs: Rearrange fs/afs/proc.c to move the show routines up

2018-05-18T10:46:14+00:00

Rearrange fs/afs/proc.c to move the show routines up to the top of each block so the order is show, iteration, ops, file ops, fops. Signed-off-by: David Howells

afs: Rearrange fs/afs/proc.c by moving fops and open functions down

2018-05-18T10:46:14+00:00

Rearrange fs/afs/proc.c by moving fops and open functions down so as to remove predeclarations. Signed-off-by: David Howells

afs: Move /proc management functions to the end of the file

2018-05-18T10:46:14+00:00

In fs/afs/proc.c, move functions that create and remove /proc files to the end of the source file as a first stage in getting rid of all the forward declarations. Signed-off-by: David Howells

afs: simplify procfs code

2018-05-16T05:24:30+00:00

Use remove_proc_subtree to remove the whole subtree on cleanup, and unwind the registration loop into individual calls. Switch to use proc_create_seq where applicable. Signed-off-by: Christoph Hellwig