nvme-status: return negative status if !errno

'errno' is set to errno value when system calls are returning with an
error (e.g., ioctl).  But, If a command fails without any system call,
then it needs to return the raw negative error value.

For example, if we don't provide any options for connect command:

	root@vm:~# nvme connect
	need a transport (-t) argument
	root@vm:~# echo $?
	0

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>

diff --git a/nvme-status.c b/nvme-status.c
index 7821de2df2888d0108793d6ac8ac04e10b06ff1b..149e6f2b4fc2623e48a010ae58001f9565f865e6 100644 (file)
--- a/nvme-status.c
+++ b/nvme-status.c
@@ -141,8 +141,11 @@ __u8 nvme_status_to_errno(int status, bool fabrics)
        if (!status)
                return 0;
 
-       if (status < 0)
-               return errno;
+       if (status < 0) {
+               if (errno)
+                       return errno;
+               return status;
+       }
 
        /*
         * The actual status code is enough with masking 0xff, but we need to