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Merge pull request #3141 from MichaelEischer/fix-fuse-dir-owner

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fuse: Properly set uid/gid for directories
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Alexander Neumann 2020-12-01 16:06:24 +01:00 committed by GitHub
commit 43cf301450
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3 changed files with 47 additions and 4 deletions
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8
changelog/unreleased/issue-2563 Normal file
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@ -0,0 +1,8 @@
Bugfix: Use correct directory owner in fuse mount
Restic 0.10.0 changed the fuse mount to always report the current user
as the owner of directories within the fuse mount, which is incorrect.
We have changed this back to use the correct owner of a directory.
https://github.com/restic/restic/issues/2563
https://github.com/restic/restic/pull/3141

7
internal/fuse/dir.go
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@ -111,8 +111,11 @@ func (d *dir) Attr(ctx context.Context, a *fuse.Attr) error {
debug.Log("Attr()")
a.Inode = d.inode
a.Mode = os.ModeDir | d.node.Mode
a.Uid = d.root.uid
a.Gid = d.root.gid
if !d.root.cfg.OwnerIsRoot {
a.Uid = d.node.UID
a.Gid = d.node.GID
}
a.Atime = d.node.AccessTime
a.Ctime = d.node.ChangeTime
a.Mtime = d.node.ModTime

36
internal/fuse/fuse_test.go
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@ -187,6 +187,37 @@ func TestFuseFile(t *testing.T) {
}
}
func TestFuseDir(t *testing.T) {
repo, cleanup := repository.TestRepository(t)
defer cleanup()
root := &Root{repo: repo, blobCache: newBlobCache(blobCacheSize)}
node := &restic.Node{
Mode: 0755,
UID: 42,
GID: 43,
AccessTime: time.Unix(1606773731, 0),
ChangeTime: time.Unix(1606773732, 0),
ModTime: time.Unix(1606773733, 0),
}
parentInode := fs.GenerateDynamicInode(0, "parent")
inode := fs.GenerateDynamicInode(1, "foo")
d, err := newDir(context.TODO(), root, inode, parentInode, node)
rtest.OK(t, err)
// don't open the directory as that would require setting up a proper tree blob
attr := fuse.Attr{}
rtest.OK(t, d.Attr(context.TODO(), &attr))
rtest.Equals(t, inode, attr.Inode)
rtest.Equals(t, node.UID, attr.Uid)
rtest.Equals(t, node.GID, attr.Gid)
rtest.Equals(t, node.AccessTime, attr.Atime)
rtest.Equals(t, node.ChangeTime, attr.Ctime)
rtest.Equals(t, node.ModTime, attr.Mtime)
}
// Test top-level directories for their UID and GID.
func TestTopUidGid(t *testing.T) {
repo, cleanup := repository.TestRepository(t)
@ -222,8 +253,9 @@ func testTopUidGid(t *testing.T, cfg Config, repo restic.Repository, uid, gid ui
snapshotdir, err := idsdir.(fs.NodeStringLookuper).Lookup(ctx, snapID)
rtest.OK(t, err)
// restic.TestCreateSnapshot does not set the UID/GID thus it must be always zero
err = snapshotdir.Attr(ctx, &attr)
rtest.OK(t, err)
rtest.Equals(t, uid, attr.Uid)
rtest.Equals(t, gid, attr.Gid)
rtest.Equals(t, uint32(0), attr.Uid)
rtest.Equals(t, uint32(0), attr.Gid)
}