ovl: modify ovl_permission() to do checks on two inodes

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Right now ovl_permission() calls __inode_permission(realinode), to do
permission checks on real inode and no checks are done on overlay inode.

Modify it to do checks both on overlay inode as well as underlying inode.
Checks on overlay inode will be done with the creds of calling task while
checks on underlying inode will be done with the creds of mounter.

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

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Vivek Goyal 2016-07-01 16:34:27 -04:00 • committed by Miklos Szeredi

parent 39a25b2b37

commit c0ca3d70e8

1 changed files with 14 additions and 4 deletions

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fs/overlayfs/inode.c

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