Bryan Venteicher a019e26c0f Fix possible panic when creating VirtIO console dev aliases ... Since we have no control over the name, the MAKEDEV_CHECKNAME flag must be used to return an error on an invalid (to devfs) name instead of panicing. r305900 that originally added this feature also introduced a few other bugs: - Proper locking not performed - Theoretically broke the expectation that the control event buffer would not span more than one pages, but did not update the CTASSERT that was in place to prevent this. However, since the struct virtio_console_control and the bulk buffer together were quite small, this could not have happened. Also workaround an QEMU VirtIO spec violation in that it includes the NUL terminator in the buffer length when the spec says it is not included. PR: 223531 MFC after: 1 week		2018-01-13 21:39:46 +00:00
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virtio_console.c	Fix possible panic when creating VirtIO console dev aliases	2018-01-13 21:39:46 +00:00
virtio_console.h