Author: zec
Date: Sun Sep 13 21:30:18 2009
New Revision: 197176
URL: http://svn.freebsd.org/changeset/base/197176
Log:
Lock the ifnet list while iterating over it.
Submitted by: julian
MFC after: 3 days
Modified:
head/sys/compat/linux/linux_ioctl.c
Modified: head/sys/compat/linux/linux_ioctl.c
==============================================================================
--- head/sys/compat/linux/linux_ioctl.c Sun Sep 13 20:19:02 2009
(r197175)
+++ head/sys/compat/linux/linux_ioctl.c Sun Sep 13 21:30:18 2009
(r197176)
@@ -2152,6 +2152,7 @@ linux_ifconf(struct thread *td, struct i
/* handle the 'request buffer size' case */
if (ifc.ifc_buf == PTROUT(NULL)) {
ifc.ifc_len = 0;
+ IFNET_RLOCK();
TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
struct sockaddr *sa = ifa->ifa_addr;
@@ -2159,6 +2160,7 @@ linux_ifconf(struct thread *td, struct i
ifc.ifc_len += sizeof(ifr);
}
}
+ IFNET_RUNLOCK();
error = copyout(&ifc, uifc, sizeof(ifc));
CURVNET_RESTORE();
return (error);
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