86787e8d97
Setting the dumpdev via env e.g. loader.conf provides the ability to configure the kernel dump device during early boot. When using this g_io_getattr was returning EPERM due to cp->acr == 0. Fix this by calling g_access to ensure we're a read consumer prior to calling g_dev_setdumpdev. MFC after: 2 weeks Sponsored by: Multiplay