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Commit 4eb68c26 authored by Chuck Lever's avatar Chuck Lever Committed by J. Bruce Fields
Browse files

NFSD: Refactor transport addition out of __write_ports() 



Clean up: Refactor transport addition out of __write_ports() to make
it easier to understand and maintain.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 4cd5dc75

fs/nfsd/nfsctl.c

+33 −23
Original line number Diff line number Diff line
@@ -910,6 +910,36 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size) 
	return rv;

}



/*

 * A transport listener is added by writing it's transport name and

 * a port number.

 */

static ssize_t __write_ports_addxprt(char *buf)

{

	char transport[16];

	int port, err;



	if (sscanf(buf, "%15s %4u", transport, &port) != 2)

		return -EINVAL;



	if (port < 1 || port > USHORT_MAX)

		return -EINVAL;



	err = nfsd_create_serv();

	if (err != 0)

		return err;



	err = svc_create_xprt(nfsd_serv, transport,

				PF_INET, port, SVC_SOCK_ANONYMOUS);

	if (err < 0) {

		/* Give a reasonable perror msg for bad transport string */

		if (err == -ENOENT)

			err = -EPROTONOSUPPORT;

		return err;

	}

	return 0;

}



/*

 * A transport listener is removed by writing a "-", it's transport

 * name, and it's port number.
@@ -986,29 +1016,9 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size) 
		kfree(toclose);

		return len;

	}

	/*

	 * Add a transport listener by writing it's transport name

	 */

	if (isalpha(buf[0])) {

		int err;

		char transport[16];

		int port;

		if (sscanf(buf, "%15s %4d", transport, &port) == 2) {

			if (port < 1 || port > 65535)

				return -EINVAL;

			err = nfsd_create_serv();

			if (!err) {

				err = svc_create_xprt(nfsd_serv,

						      transport, PF_INET, port,

						      SVC_SOCK_ANONYMOUS);

				if (err == -ENOENT)

					/* Give a reasonable perror msg for

					 * bad transport string */

					err = -EPROTONOSUPPORT;

			}

			return err < 0 ? err : 0;

		}

	}



	if (isalpha(buf[0]))

		return __write_ports_addxprt(buf);



	if (buf[0] == '-' && isalpha(buf[1]))

		return __write_ports_delxprt(buf);