1 files changed, 20 insertions, 0 deletions

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index d6881774ea57..d4041a05bc19 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -23,10 +23,12 @@
 #include <linux/pagemap.h>
 #include <linux/init.h>
 #include <linux/string.h>
+#include <linux/smp_lock.h>
 
 #include <linux/nfs.h>
 #include <linux/nfsd_idmap.h>
 #include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svcsock.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/cache.h>
 #include <linux/nfsd/xdr.h>
@@ -51,6 +53,7 @@ enum {
         NFSD_Fh,
         NFSD_Threads,
         NFSD_Versions,
+        NFSD_Ports,
         /*
          * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
          * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
@@ -74,6 +77,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size);
 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
 static ssize_t write_threads(struct file *file, char *buf, size_t size);
 static ssize_t write_versions(struct file *file, char *buf, size_t size);
+static ssize_t write_ports(struct file *file, char *buf, size_t size);
 #ifdef CONFIG_NFSD_V4
 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
@@ -90,6 +94,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
         [NFSD_Fh] = write_filehandle,
         [NFSD_Threads] = write_threads,
         [NFSD_Versions] = write_versions,
+        [NFSD_Ports] = write_ports,
 #ifdef CONFIG_NFSD_V4
         [NFSD_Leasetime] = write_leasetime,
         [NFSD_RecoveryDir] = write_recoverydir,
@@ -419,6 +424,20 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
         return len;
 }
 
+static ssize_t write_ports(struct file *file, char *buf, size_t size)
+{
+        /* for now, ignore what was written and just
+         * return known ports
+         * AF proto address port
+         */
+        int len = 0;
+        lock_kernel();
+        if (nfsd_serv)
+                len = svc_sock_names(buf, nfsd_serv);
+        unlock_kernel();
+        return len;
+}
+
 #ifdef CONFIG_NFSD_V4
 extern time_t nfs4_leasetime(void);
 
@@ -482,6 +501,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
                 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
                 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
                 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
+                [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
 #ifdef CONFIG_NFSD_V4
                 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
                 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},