ovl: check permission to open real file

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Call inode_permission() on real inode before opening regular file on one of
the underlying layers.

In some cases ovl_permission() already checks access to an underlying file,
but it misses the metacopy case, and possibly other ones as well.

Removing the redundant permission check from ovl_permission() should be
considered later.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

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Miklos Szeredi 2020-06-02 22:20:26 +02:00

parent 292f902a40

commit 05acefb487

1 changed files with 14 additions and 2 deletions

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16

fs/overlayfs/file.c

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