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NFSv4: Ensure we request the ordinary fileid when doing readdirplus

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When readdir() returns a directory entry for the root of a mounted
filesystem, Linux follows the old convention of returning the inode
number of the covered directory (despite newer versions of POSIX declaring
that this is a bug).
To ensure this continues to work, the NFSv4 readdir implementation requests
the 'mounted-on-fileid' from the server.

However, readdirplus also needs to instantiate an inode for this entry, and
for that, we also need to request the real fileid as per this patch.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2011-04-27 13:47:52 -04:00
parent 1bd714f2a1
commit 28331a46d8
2 changed files with 16 additions and 17 deletions
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2
include/linux/nfs_xdr.h
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@ -50,6 +50,7 @@ struct nfs_fattr {
} du;
struct nfs_fsid fsid;
__u64 fileid;
__u64 mounted_on_fileid;
struct timespec atime;
struct timespec mtime;
struct timespec ctime;
@ -83,6 +84,7 @@ struct nfs_fattr {
#define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */
#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 20) /* Treat as mountpoint */
#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 21)
#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
| NFS_ATTR_FATTR_MODE \