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2878dffc7d
When copying inode attributes from the upper or lower layer to ovl inodes we need to take the upper or lower layer's mount's idmapping into account. In a lot of places we call ovl_copyattr() only on upper inodes and in some we call it on either upper or lower inodes. Split this into two separate helpers. The first one should only be called on upper inodes and is thus called ovl_copy_upperattr(). The second one can be called on upper or lower inodes. We add ovl_copy_realattr() for this task. The new helper makes use of the previously added ovl_i_path_real() helper. This is needed to support idmapped base layers with overlay. When overlay copies the inode information from an upper or lower layer to the relevant overlay inode it will apply the idmapping of the upper or lower layer when doing so. The ovl inode ownership will thus always correctly reflect the ownership of the idmapped upper or lower layer. All idmapping helpers are nops when no idmapped base layers are used. Cc: <linux-unionfs@vger.kernel.org> Tested-by: Giuseppe Scrivano <gscrivan@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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| .. | ||
| copy_up.c | ||
| dir.c | ||
| export.c | ||
| file.c | ||
| inode.c | ||
| Kconfig | ||
| Makefile | ||
| namei.c | ||
| overlayfs.h | ||
| ovl_entry.h | ||
| readdir.c | ||
| super.c | ||
| util.c | ||