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Properly report an error instead of panicing when user tries to create

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LUN backed by non-disk device, e.g. /dev/null.

Reviewed by:	ken (earlier version)
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
trasz 2013-12-03 18:04:14 +00:00
parent aaed7cd3d5
commit 0cd85d010b
1 changed files with 3 additions and 1 deletions
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4
sys/cam/ctl/ctl_backend_block.c
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@ -1483,6 +1483,7 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun)
case CTL_BE_BLOCK_FILE:
break;
case CTL_BE_BLOCK_NONE:
break;
default:
panic("Unexpected backend type.");
break;
@ -1501,6 +1502,7 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun)
}
break;
case CTL_BE_BLOCK_NONE:
break;
default:
panic("Unexpected backend type.");
break;
@ -1587,7 +1589,7 @@ ctl_be_block_open(struct ctl_be_block_softc *softc,
} else {
error = EINVAL;
snprintf(req->error_str, sizeof(req->error_str),
"%s is not a disk or file", be_lun->dev_path);
"%s is not a disk or plain file", be_lun->dev_path);
}
VOP_UNLOCK(be_lun->vn, 0);