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| author | Dimitris Aragiorgis <dimara@arrikto.com> | 2015-06-23 13:45:00 +0300 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-06-23 15:08:52 +0100 |
| commit | 3307ed7b3fac5ba99eb3b84904b0b7cdc3592a61 (patch) | |
| tree | fb98300d62b250a8976a07a9384a6ba27402d2e0 /coroutine-sigaltstack.c | |
| parent | a93a3982a6645463fa822131d38b17284edd5633 (diff) | |
raw-posix: Introduce hdev_is_sg()
Until now, an SG device was identified only by checking if its path
started with "/dev/sg". Then, hdev_open() would set the bs->sg flag
accordingly. The patch relies on the actual properties of the device
instead of the specified file path.
To this end, test for an SG device (e.g. /dev/sg0) by ensuring that
all of the following holds:
- The specified file name corresponds to a character device
- The device supports the SG_GET_VERSION_NUM ioctl
- The device supports the SG_GET_SCSI_ID ioctl
Signed-off-by: Dimitris Aragiorgis <dimara@arrikto.com>
Message-id: 1435056300-14924-6-git-send-email-dimara@arrikto.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'coroutine-sigaltstack.c')
0 files changed, 0 insertions, 0 deletions