Greg Kurz 20afcc23b3 virtiofsd: Don't allow empty paths in lookup_name() ... When passed an empty filename, lookup_name() returns the inode of the parent directory, unless the parent is the root in which case the st_dev doesn't match and lo_find() returns NULL. This is because lookup_name() passes AT_EMPTY_PATH down to fstatat() or statx(). This behavior doesn't quite make sense because users of lookup_name() then pass the name to unlinkat(), renameat() or renameat2(), all of which will always fail on empty names. Drop AT_EMPTY_PATH from the flags in lookup_name() so that it has the consistent behavior of "returning an existing child inode or NULL" for all directories. Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <20210312141003.819108-2-groug@kaod.org> Reviewed-by: Connor Kuehl <ckuehl@redhat.com> Reviewed-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>		2021-03-15 20:01:55 +00:00
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virtiofsd	virtiofsd: Don't allow empty paths in lookup_name()	2021-03-15 20:01:55 +00:00
meson.build	virtiofsd: Allow to build it without the tools	2021-02-16 17:03:09 +00:00