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| author | Cyrill Gorcunov <gorcunov@openvz.org> | 2012-12-18 04:05:06 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-18 05:15:27 +0400 |
| commit | ab49bdecc3ebb46ab661f5f05d5c5ea9606406c6 (patch) | |
| tree | 8b9cb838c82a2255d52fb36b34d3569b4726c48a /fs/exportfs/expfs.c | |
| parent | 138d22b58696c506799f8de759804083ff9effae (diff) | |
| download | linux-ab49bdecc3ebb46ab661f5f05d5c5ea9606406c6.tar.xz | |
fs, exportfs: escape nil dereference if no s_export_op present
This routine will be used to generate a file handle in fdinfo output for
inotify subsystem, where if no s_export_op present the general
export_encode_fh should be used. Thus add a test if s_export_op present
inside exportfs_encode_fh itself.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: James Bottomley <jbottomley@parallels.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Helsley <matt.helsley@gmail.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exportfs/expfs.c')
| -rw-r--r-- | fs/exportfs/expfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 29ab099e3e08..10f137381ac7 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -357,7 +357,7 @@ int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len, */ parent = p->d_inode; } - if (nop->encode_fh) + if (nop && nop->encode_fh) error = nop->encode_fh(inode, fid->raw, max_len, parent); else error = export_encode_fh(inode, fid, max_len, parent); |