Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

This is an initial merge in of Eric Biederman's work to start adding
user namespace support to the networking.

Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 29 insertions, 13 deletions

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 6dd1131f2ec1..dc3ef5aef355 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -319,7 +319,7 @@ replay:
                 }
         }
 
-        err = tp->ops->change(tp, cl, t->tcm_handle, tca, &fh);
+        err = tp->ops->change(skb, tp, cl, t->tcm_handle, tca, &fh);
         if (err == 0) {
                 if (tp_created) {
                         spin_lock_bh(root_lock);
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index 590960a22a77..344a11b342e5 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -162,7 +162,8 @@ errout:
         return err;
 }
 
-static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int basic_change(struct sk_buff *in_skb,
+                        struct tcf_proto *tp, unsigned long base, u32 handle,
                         struct nlattr **tca, unsigned long *arg)
 {
         int err;
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 7743ea8d1d38..91de66695b4a 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -151,7 +151,8 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
         [TCA_CGROUP_EMATCHES]   = { .type = NLA_NESTED },
 };
 
-static int cls_cgroup_change(struct tcf_proto *tp, unsigned long base,
+static int cls_cgroup_change(struct sk_buff *in_skb,
+                             struct tcf_proto *tp, unsigned long base,
                              u32 handle, struct nlattr **tca,
                              unsigned long *arg)
 {
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index ccd08c8dc6a7..ce82d0cb1b47 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -193,15 +193,19 @@ static u32 flow_get_rtclassid(const struct sk_buff *skb)
 
 static u32 flow_get_skuid(const struct sk_buff *skb)
 {
-        if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-                return skb->sk->sk_socket->file->f_cred->fsuid;
+        if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+                kuid_t skuid = skb->sk->sk_socket->file->f_cred->fsuid;
+                return from_kuid(&init_user_ns, skuid);
+        }
         return 0;
 }
 
 static u32 flow_get_skgid(const struct sk_buff *skb)
 {
-        if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-                return skb->sk->sk_socket->file->f_cred->fsgid;
+        if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+                kgid_t skgid = skb->sk->sk_socket->file->f_cred->fsgid;
+                return from_kgid(&init_user_ns, skgid);
+        }
         return 0;
 }
 
@@ -347,7 +351,8 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = {
         [TCA_FLOW_PERTURB]      = { .type = NLA_U32 },
 };
 
-static int flow_change(struct tcf_proto *tp, unsigned long base,
+static int flow_change(struct sk_buff *in_skb, 
+                       struct tcf_proto *tp, unsigned long base,
                        u32 handle, struct nlattr **tca,
                        unsigned long *arg)
 {
@@ -386,6 +391,10 @@ static int flow_change(struct tcf_proto *tp, unsigned long base,
 
                 if (fls(keymask) - 1 > FLOW_KEY_MAX)
                         return -EOPNOTSUPP;
+
+                if ((keymask & (FLOW_KEY_SKUID|FLOW_KEY_SKGID)) &&
+                    sk_user_ns(NETLINK_CB(in_skb).ssk) != &init_user_ns)
+                        return -EOPNOTSUPP;
         }
 
         err = tcf_exts_validate(tp, tb, tca[TCA_RATE], &e, &flow_ext_map);
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 8384a4797240..4075a0aef2aa 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -233,7 +233,8 @@ errout:
         return err;
 }
 
-static int fw_change(struct tcf_proto *tp, unsigned long base,
+static int fw_change(struct sk_buff *in_skb,
+                     struct tcf_proto *tp, unsigned long base,
                      u32 handle,
                      struct nlattr **tca,
                      unsigned long *arg)
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 44f405cb9aaf..c10d57bf98f2 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -427,7 +427,8 @@ errout:
         return err;
 }
 
-static int route4_change(struct tcf_proto *tp, unsigned long base,
+static int route4_change(struct sk_buff *in_skb,
+                       struct tcf_proto *tp, unsigned long base,
                        u32 handle,
                        struct nlattr **tca,
                        unsigned long *arg)
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
index 18ab93ec8d7e..494bbb90924a 100644
--- a/net/sched/cls_rsvp.h
+++ b/net/sched/cls_rsvp.h
@@ -416,7 +416,8 @@ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
         [TCA_RSVP_PINFO]        = { .len = sizeof(struct tc_rsvp_pinfo) },
 };
 
-static int rsvp_change(struct tcf_proto *tp, unsigned long base,
+static int rsvp_change(struct sk_buff *in_skb,
+                       struct tcf_proto *tp, unsigned long base,
                        u32 handle,
                        struct nlattr **tca,
                        unsigned long *arg)
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index fe29420d0b0e..a1293b4ab7a1 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -332,7 +332,8 @@ errout:
 }
 
 static int
-tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+tcindex_change(struct sk_buff *in_skb,
+               struct tcf_proto *tp, unsigned long base, u32 handle,
                struct nlattr **tca, unsigned long *arg)
 {
         struct nlattr *opt = tca[TCA_OPTIONS];
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index d45373fb00b9..c7c27bc91b5a 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -544,7 +544,8 @@ errout:
         return err;
 }
 
-static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int u32_change(struct sk_buff *in_skb,
+                      struct tcf_proto *tp, unsigned long base, u32 handle,
                       struct nlattr **tca,
                       unsigned long *arg)
 {