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fs: return EPERM on immutable inode

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In most cases, EPERM is returned on immutable inode, and there're only a
few places returning EACCES. I noticed this when running LTP on
overlayfs, setxattr03 failed due to unexpected EACCES on immutable
inode.

So converting all EACCES to EPERM on immutable inode.

Acked-by: Dave Chinner <[email protected]>
Signed-off-by: Eryu Guan <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Eryu Guan 2016-08-02 19:58:28 +08:00 • committed by Linus Torvalds
commit 337684a174
4 changed files with 5 additions and 4 deletions
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2
fs/gfs2/inode.c
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@ -1800,7 +1800,7 @@ int gfs2_permission(struct inode *inode, int mask)
}
if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
error = -EACCES;
error = -EPERM;
else
error = generic_permission(inode, mask);
if (gfs2_holder_initialized(&i_gh))