Clean up: Refactor transport addition out of __write_ports() to make
it easier to understand and maintain.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/nfsctl.c | 56 ++++++++++++++++++++++++++++++++----------------------
1 files changed, 33 insertions(+), 23 deletions(-)
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 2c1dce8..748532b 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -911,6 +911,36 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
}
/*
+ * 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);
--
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