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Mark Johnston
ebf1041fc8
- Use pending_mutex to synchronize several state flags. In particular, ensure that two threads can't race to open the device file at the same time.[1] - Fix an off-by-one in hv_kvp_dev_daemon_read() that would result in a one-byte OOB read if the caller supplied a large enough read buffer.[2] - Change the device permissions to 0600: hv_kvp_dev_daemon_read() returns an error until the owning process registers itself with a write, so there's no sense in providing read-only access. - Use bool instead of boolean_t. - Don't return negative error numbers to userspace. - Call seldrain() when closing the device. Reported by: pixelpop [1][2] MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D60387