net: Support compat SIOCGETVIFCNT ioctl in ipv4. (ca6b8bb0) · Commits · e / devices / android_kernel_teracube_emerald

net/ipv4/ipmr.c

+30 −0

Original line number	Diff line number	Diff line
		@@ -1444,9 +1444,19 @@ struct compat_sioc_sg_req {
		compat_ulong_t wrong_if;
		};

		struct compat_sioc_vif_req {
		vifi_t vifi; /* Which iface */
		compat_ulong_t icount;
		compat_ulong_t ocount;
		compat_ulong_t ibytes;
		compat_ulong_t obytes;
		};

		int ipmr_compat_ioctl(struct sock sk, unsigned int cmd, void __user arg)
		{
		struct compat_sioc_sg_req sr;
		struct compat_sioc_vif_req vr;
		struct vif_device *vif;
		struct mfc_cache *c;
		struct net *net = sock_net(sk);
		struct mr_table *mrt;
		@@ -1456,6 +1466,26 @@ int ipmr_compat_ioctl(struct sock sk, unsigned int cmd, void __user arg)
		return -ENOENT;

		switch (cmd) {
		case SIOCGETVIFCNT:
		if (copy_from_user(&vr, arg, sizeof(vr)))
		return -EFAULT;
		if (vr.vifi >= mrt->maxvif)
		return -EINVAL;
		read_lock(&mrt_lock);
		vif = &mrt->vif_table[vr.vifi];
		if (VIF_EXISTS(mrt, vr.vifi)) {
		vr.icount = vif->pkt_in;
		vr.ocount = vif->pkt_out;
		vr.ibytes = vif->bytes_in;
		vr.obytes = vif->bytes_out;
		read_unlock(&mrt_lock);

		if (copy_to_user(arg, &vr, sizeof(vr)))
		return -EFAULT;
		return 0;
		}
		read_unlock(&mrt_lock);
		return -EADDRNOTAVAIL;
		case SIOCGETSGCNT:
		if (copy_from_user(&sr, arg, sizeof(sr)))
		return -EFAULT;