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ucm
2014 Jun 20
0
Access permissions of passed through character devices
...omain.html#elementsHostDevCaps I pass an InfiniBand adapter through to the guest container. However, within the container the access permissions are not the same. Within the host they are like this:
crw-rw-rw- 1 root root 10, 56 20. Jun 09:40 rdma_cm
crw-rw-rw- 1 root root 231, 224 20. Jun 09:41 ucm0
crw-rw-rw- 1 root root 231, 0 20. Jun 09:41 umad0
crw-rw-rw- 1 root root 231, 1 20. Jun 09:41 umad1
crw-rw-rw- 1 root root 231, 192 20. Jun 09:41 uverbs0
Within the guest, only root may read or write from/to the device:
crw------- 1 root root 10, 56 20. Jun 09:40 rdma_cm
crw------- 1 root r...