
If a root process other than init calls __system_property_add, which it should never do, it will break the design assumption that there is only one mutator. Pass O_EXCL to open() in map_prop_region_rw to ensure that only one process ever has the property pages open for write. (cherry picked from commit fb9b7b436f3ef94385f1b0c55ab81f246f0d96b8) Change-Id: I6df3afedbfb5d07891b095aa24b78278381a5aaf
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