svn commit: r196635 - in head/sys/compat: linprocfs linux

[Marko Zec]

Author: zec
Date: Fri Aug 28 22:51:07 2009
New Revision: 196635
URL: http://svn.freebsd.org/changeset/base/196635

Log:
  Fix a few panics in linuxulator + VIMAGE due to curvnet not being set.
  
  This change affects only options VIMAGE builds.
  
  Reviewed by:	julian
  MFC after:	3 days

Modified:
  head/sys/compat/linprocfs/linprocfs.c
  head/sys/compat/linux/linux_ioctl.c

Modified: head/sys/compat/linprocfs/linprocfs.c
==============================================================================
--- head/sys/compat/linprocfs/linprocfs.c	Fri Aug 28 22:41:25 2009	(r196634)
+++ head/sys/compat/linprocfs/linprocfs.c	Fri Aug 28 22:51:07 2009	(r196635)
@@ -1085,6 +1085,7 @@ linprocfs_donetdev(PFS_FILL_ARGS)
 	    "bytes    packets errs drop fifo frame compressed",
 	    "bytes    packets errs drop fifo frame compressed");
 
+	CURVNET_SET(TD_TO_VNET(curthread));
 	IFNET_RLOCK();
 	TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 		linux_ifname(ifp, ifname, sizeof ifname);
@@ -1095,6 +1096,7 @@ linprocfs_donetdev(PFS_FILL_ARGS)
 		    0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL);
 	}
 	IFNET_RUNLOCK();
+	CURVNET_RESTORE();
 
 	return (0);
 }

Modified: head/sys/compat/linux/linux_ioctl.c
==============================================================================
--- head/sys/compat/linux/linux_ioctl.c	Fri Aug 28 22:41:25 2009	(r196634)
+++ head/sys/compat/linux/linux_ioctl.c	Fri Aug 28 22:51:07 2009	(r196635)
@@ -2104,6 +2104,7 @@ ifname_linux_to_bsd(struct thread *td, c
 		return (NULL);
 	index = 0;
 	is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
+	CURVNET_SET(TD_TO_VNET(td));
 	IFNET_RLOCK();
 	TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 		/*
@@ -2117,6 +2118,7 @@ ifname_linux_to_bsd(struct thread *td, c
 			break;
 	}
 	IFNET_RUNLOCK();
+	CURVNET_RESTORE();
 	if (ifp != NULL)
 		strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
 	return (ifp);
@@ -2146,6 +2148,7 @@ linux_ifconf(struct thread *td, struct i
 
 	max_len = MAXPHYS - 1;
 
+	CURVNET_SET(TD_TO_VNET(td));
 	/* handle the 'request buffer size' case */
 	if (ifc.ifc_buf == PTROUT(NULL)) {
 		ifc.ifc_len = 0;
@@ -2157,11 +2160,14 @@ linux_ifconf(struct thread *td, struct i
 			}
 		}
 		error = copyout(&ifc, uifc, sizeof(ifc));
+		CURVNET_RESTORE();
 		return (error);
 	}
 
-	if (ifc.ifc_len <= 0)
+	if (ifc.ifc_len <= 0) {
+		CURVNET_RESTORE();
 		return (EINVAL);
+	}
 
 again:
 	/* Keep track of eth interfaces */
@@ -2223,6 +2229,7 @@ again:
 	memcpy(PTRIN(ifc.ifc_buf), sbuf_data(sb), ifc.ifc_len);
 	error = copyout(&ifc, uifc, sizeof(ifc));
 	sbuf_delete(sb);
+	CURVNET_RESTORE();
 
 	return (error);
 }