ovl: check IS_APPEND() on real upper inode

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For overlay file open, check IS_APPEND() on the real upper inode
inside d_real(), because the overlay inode does not have the
S_APPEND flag and IS_APPEND() can only be checked at open time.

Note that because overlayfs does not copy up the chattr inode flags
(i.e. S_APPEND, S_IMMUTABLE), the IS_APPEND() check is only relevant
for upper inodes that were set with chattr +a and not to lower
inodes that had chattr +a before copy up.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

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Amir Goldstein 2017-04-08 14:49:07 +03:00 • committed by Miklos Szeredi

parent 78757af651

commit b0990fbbbd

1 changed files with 25 additions and 3 deletions

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fs/overlayfs/super.c

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