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authorAmir Goldstein <amir73il@gmail.com>2023-04-23 19:02:04 +0300
committerAmir Goldstein <amir73il@gmail.com>2023-08-12 19:02:47 +0300
commit16aac5ad1fa94894b798dd522c5c3a6a0628d7f0 (patch)
tree292889602a225cba9ad4399c6d9f63a5e14e04d5 /fs/overlayfs/overlayfs.h
parent0c71faf5a607c8744ccee702846970bdb1a8005f (diff)
downloadlinux-16aac5ad1fa94894b798dd522c5c3a6a0628d7f0.tar.xz
ovl: support encoding non-decodable file handles
When all layers support file handles, we support encoding non-decodable file handles (a.k.a. fid) even with nfs_export=off. When file handles do not need to be decoded, we do not need to copy up redirected lower directories on encode, and we encode also non-indexed upper with lower file handle, so fid will not change on copy up. This enables reporting fanotify events with file handles on overlayfs with default config/mount options. Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
-rw-r--r--fs/overlayfs/overlayfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 488bd14c2ed8..453610fb9bf9 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -799,6 +799,7 @@ int ovl_set_origin(struct ovl_fs *ofs, struct dentry *lower,
/* export.c */
extern const struct export_operations ovl_export_operations;
+extern const struct export_operations ovl_export_fid_operations;
/* super.c */
int ovl_fill_super(struct super_block *sb, struct fs_context *fc);