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authorJakob Unterwurzacher2017-07-29 16:13:38 +0200
committerJakob Unterwurzacher2017-07-29 16:15:49 +0200
commitd12aa577156101a1c6a05765de751f0a54b58aa8 (patch)
tree7d06f260636c449a7cc4488393c958c909fadb07 /internal/fusefrontend_reverse/rfs.go
parentd5133ca5ac4f241ff22ef145a3605a9fdb341bb6 (diff)
fusefronted_reverse: fix ino collision between .name and .diriv files
A directory with a long name has two associated virtual files: the .name file and the .diriv files. These used to get the same inode number: $ ls -di1 * */* 33313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw/gocryptfs.diriv 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw.name With this change we use another prefix (2 instead of 1) for .name files. $ ls -di1 * */* 33313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw/gocryptfs.diriv 2000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw.name
Diffstat (limited to 'internal/fusefrontend_reverse/rfs.go')
-rw-r--r--internal/fusefrontend_reverse/rfs.go4
1 files changed, 2 insertions, 2 deletions
diff --git a/internal/fusefrontend_reverse/rfs.go b/internal/fusefrontend_reverse/rfs.go
index 3c84e15..76b1361 100644
--- a/internal/fusefrontend_reverse/rfs.go
+++ b/internal/fusefrontend_reverse/rfs.go
@@ -162,9 +162,9 @@ func (rfs *ReverseFS) GetAttr(relPath string, context *fuse.Context) (*fuse.Attr
return nil, fuse.ToStatus(err)
}
// Instead of risking an inode number collision, we return an error.
- if st.Ino > virtualInoBase {
+ if st.Ino > inoBaseMin {
tlog.Warn.Printf("GetAttr %q: backing file inode number %d crosses reserved space, max=%d. Returning EOVERFLOW.",
- relPath, st.Ino, virtualInoBase)
+ relPath, st.Ino, inoBaseMin)
return nil, fuse.ToStatus(syscall.EOVERFLOW)
}
var a fuse.Attr