diff mbox series

[v2,5/9] nfs-sysfs.py: Add a command for changing xprt dstaddr

Message ID 20210806201739.472806-6-Anna.Schumaker@Netapp.com (mailing list archive)
State New, archived
Headers show
Series Add a tool for using the new sysfs files | expand

Commit Message

Anna Schumaker Aug. 6, 2021, 8:17 p.m. UTC
From: Anna Schumaker <Anna.Schumaker@Netapp.com>

Using the socket module for dns resolution

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
 tools/nfs-sysfs/xprt.py | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
diff mbox series

Patch

diff --git a/tools/nfs-sysfs/xprt.py b/tools/nfs-sysfs/xprt.py
index fbdd9bfc9375..2160cb0a9575 100644
--- a/tools/nfs-sysfs/xprt.py
+++ b/tools/nfs-sysfs/xprt.py
@@ -1,3 +1,4 @@ 
+import socket
 import sysfs
 
 class Xprt:
@@ -34,6 +35,12 @@  class Xprt:
         return "xprt %s: %s, %s%s" % (self.id, self.type, self.dstaddr,
                                      f" [main]" if self.main_xprt else "" )
 
+    def set_dstaddr(self, newaddr):
+        resolved = socket.gethostbyname(newaddr)
+        with open(self.path / "dstaddr", 'w') as f:
+            f.write(resolved)
+        self.dstaddr = open(self.path / "dstaddr", 'r').readline().strip()
+
 
 def list_xprts(args):
     xprts = [ Xprt(f) for f in (sysfs.SUNRPC / "xprt-switches").glob("**/xprt-*") ]
@@ -42,7 +49,28 @@  def list_xprts(args):
         if args.id == None or xprt.id == args.id[0]:
             print(xprt)
 
+def get_xprt(id):
+    xprts = [ Xprt(f) for f in (sysfs.SUNRPC / "xprt-switches").glob("**/xprt-*") ]
+    for xprt in xprts:
+        if xprt.id == id:
+            return xprt
+
+def set_xprt_property(args):
+    xprt = get_xprt(args.id[0])
+    try:
+        if args.dstaddr != None:
+            xprt.set_dstaddr(args.dstaddr[0])
+        print(xprt)
+    except Exception as e:
+        print(e)
+
 def add_command(subparser):
     parser = subparser.add_parser("xprt", help="Commands for individual xprts")
     parser.add_argument("--id", metavar="ID", nargs=1, type=int, help="Id of a specific xprt to show")
     parser.set_defaults(func=list_xprts)
+
+    subparser = parser.add_subparsers()
+    parser = subparser.add_parser("set", help="Set an xprt property")
+    parser.add_argument("--id", metavar="ID", nargs=1, type=int, required=True, help="Id of a specific xprt to modify")
+    parser.add_argument("--dstaddr", metavar="dstaddr", nargs=1, type=str, help="New dstaddr to set")
+    parser.set_defaults(func=set_xprt_property)