linux-toradex.git/fs/nfs/namespace.c, branch v3.2.60

NFS: Don't silently fail setattr() requests on mountpoints

2013-02-06T04:33:51+00:00

commit ab225417825963b6dc66be7ea80f94ac1378dfdf upstream.

Ensure that any setattr and getattr requests for junctions and/or
mountpoints are sent to the server. Ever since commit
0ec26fd0698 (vfs: automount should ignore LOOKUP_FOLLOW), we have
silently dropped any setattr requests to a server-side mountpoint.
For referrals, we have silently dropped both getattr and setattr
requests.

This patch restores the original behaviour for setattr on mountpoints,
and tries to do the same for referrals, provided that we have a
filehandle...

Signed-off-by: Trond Myklebust 
Signed-off-by: Ben Hutchings

nfs: Show original device name verbatim in /proc/*/mount{s,info}

2012-11-16T16:47:05+00:00

commit 97a54868262da1629a3e65121e65b8e8c4419d9f upstream.

Since commit c7f404b ('vfs: new superblock methods to override
/proc/*/mount{s,info}'), nfs_path() is used to generate the mounted
device name reported back to userland.

nfs_path() always generates a trailing slash when the given dentry is
the root of an NFS mount, but userland may expect the original device
name to be returned verbatim (as it used to be).  Make this
canonicalisation optional and change the callers accordingly.

[jrnieder@gmail.com: use flag instead of bool argument]
Reported-and-tested-by: Chris Hiestand 
Reference: http://bugs.debian.org/669314
Signed-off-by: Ben Hutchings 
Signed-off-by: Jonathan Nieder 
Signed-off-by: Trond Myklebust 
[bwh: Backported to 3.2:
 - Adjust context
 - nfs_show_devname() still takes a pointer to struct vfsmount]

NFS: Add SECINFO_NO_NAME procedure

2011-07-12T17:40:27+00:00

If the client is using NFS v4.1, then we can use SECINFO_NO_NAME to find
the secflavor for the initial mount.  If the server doesn't support
SECINFO_NO_NAME then I fall back on the "guess and check" method used
for v4.0 mounts.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

NFS: Remove unused argument from nfs_find_best_sec()

2011-04-12T23:34:23+00:00

The inode was used in an earlier version of the code, but it isn't
used anymore.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

NFS: Fix a signed vs. unsigned secinfo bug

2011-04-06T20:25:04+00:00

rpc_authflavor_t is cast from an unsigned int, but the
initial code tried to use it as a signed int.  I fix
this by passing an rpc_authflavor_t pointer around, and
returning signed integers from functions.

Signed-off-by: Bryan Schumaker 
Reported-by: Dan Carpenter 
Signed-off-by: Trond Myklebust

NFS: Don't leak RPC clients in NFSv4 secinfo negotiation

2011-03-27T15:48:17+00:00

Signed-off-by: Trond Myklebust

NFS: use secinfo when crossing mountpoints

2011-03-24T17:52:42+00:00

A submount may use different security than the parent
mount does.  We should figure out what sec flavor the
submount uses at mount time.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

NFS: lookup supports alternate client

2011-03-24T17:52:41+00:00

A later patch will need to perform a lookup using an
alternate client with a different security flavor.
This patch adds support for doing that on NFS v4.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

nfs: lock() vs unlock() typo

2011-03-21T04:45:50+00:00

These should be spin_unlock() instead of spin_lock().  It's a typo.

Signed-off-by: Dan Carpenter 
Signed-off-by: Al Viro

nfs: nfs_do_{ref,sub}mount() superblock argument is redundant

2011-03-16T20:48:06+00:00

It's always equal to dentry->d_sb

Signed-off-by: Al Viro