diff options
author | David S. Miller <davem@davemloft.net> | 2012-08-24 22:54:37 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2012-08-24 22:54:37 (GMT) |
commit | e6acb384807406c1a6ad3ddc91191f7658e63b7a (patch) | |
tree | 7906d1bb402ac30e4efaa1bc6451b1c7a4b6e768 /net/ipv4 | |
parent | 255e87657a84e21986e5d9070f3dee4aa8d1d531 (diff) | |
parent | 898132ae76d1aeb52301f10e8795c34fbb54e853 (diff) | |
download | linux-fsl-qoriq-e6acb384807406c1a6ad3ddc91191f7658e63b7a.tar.xz |
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>
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/inet_diag.c | 21 | ||||
-rw-r--r-- | net/ipv4/ping.c | 22 | ||||
-rw-r--r-- | net/ipv4/raw.c | 4 | ||||
-rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 42 | ||||
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 6 | ||||
-rw-r--r-- | net/ipv4/udp.c | 4 | ||||
-rw-r--r-- | net/ipv4/udp_diag.c | 5 |
7 files changed, 64 insertions, 40 deletions
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 570e61f..8bc005b 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -69,6 +69,7 @@ static inline void inet_diag_unlock_handler( int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, struct sk_buff *skb, struct inet_diag_req_v2 *req, + struct user_namespace *user_ns, u32 pid, u32 seq, u16 nlmsg_flags, const struct nlmsghdr *unlh) { @@ -124,7 +125,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, } #endif - r->idiag_uid = sock_i_uid(sk); + r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk)); r->idiag_inode = sock_i_ino(sk); if (ext & (1 << (INET_DIAG_MEMINFO - 1))) { @@ -199,11 +200,12 @@ EXPORT_SYMBOL_GPL(inet_sk_diag_fill); static int inet_csk_diag_fill(struct sock *sk, struct sk_buff *skb, struct inet_diag_req_v2 *req, + struct user_namespace *user_ns, u32 pid, u32 seq, u16 nlmsg_flags, const struct nlmsghdr *unlh) { return inet_sk_diag_fill(sk, inet_csk(sk), - skb, req, pid, seq, nlmsg_flags, unlh); + skb, req, user_ns, pid, seq, nlmsg_flags, unlh); } static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, @@ -256,14 +258,16 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, } static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, - struct inet_diag_req_v2 *r, u32 pid, u32 seq, u16 nlmsg_flags, + struct inet_diag_req_v2 *r, + struct user_namespace *user_ns, + u32 pid, u32 seq, u16 nlmsg_flags, const struct nlmsghdr *unlh) { if (sk->sk_state == TCP_TIME_WAIT) return inet_twsk_diag_fill((struct inet_timewait_sock *)sk, skb, r, pid, seq, nlmsg_flags, unlh); - return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh); + return inet_csk_diag_fill(sk, skb, r, user_ns, pid, seq, nlmsg_flags, unlh); } int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb, @@ -311,6 +315,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s } err = sk_diag_fill(sk, rep, req, + sk_user_ns(NETLINK_CB(in_skb).ssk), NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, 0, nlh); if (err < 0) { @@ -551,6 +556,7 @@ static int inet_csk_diag_dump(struct sock *sk, return 0; return inet_csk_diag_fill(sk, skb, r, + sk_user_ns(NETLINK_CB(cb->skb).ssk), NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); } @@ -591,7 +597,9 @@ static int inet_twsk_diag_dump(struct inet_timewait_sock *tw, } static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, - struct request_sock *req, u32 pid, u32 seq, + struct request_sock *req, + struct user_namespace *user_ns, + u32 pid, u32 seq, const struct nlmsghdr *unlh) { const struct inet_request_sock *ireq = inet_rsk(req); @@ -625,7 +633,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, r->idiag_expires = jiffies_to_msecs(tmo); r->idiag_rqueue = 0; r->idiag_wqueue = 0; - r->idiag_uid = sock_i_uid(sk); + r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk)); r->idiag_inode = 0; #if IS_ENABLED(CONFIG_IPV6) if (r->idiag_family == AF_INET6) { @@ -702,6 +710,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk, } err = inet_diag_fill_req(skb, sk, req, + sk_user_ns(NETLINK_CB(cb->skb).ssk), NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, cb->nlh); if (err < 0) { diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 6232d47..8f3d054 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -185,10 +185,10 @@ exit: return sk; } -static void inet_get_ping_group_range_net(struct net *net, gid_t *low, - gid_t *high) +static void inet_get_ping_group_range_net(struct net *net, kgid_t *low, + kgid_t *high) { - gid_t *data = net->ipv4.sysctl_ping_group_range; + kgid_t *data = net->ipv4.sysctl_ping_group_range; unsigned int seq; do { @@ -203,19 +203,13 @@ static void inet_get_ping_group_range_net(struct net *net, gid_t *low, static int ping_init_sock(struct sock *sk) { struct net *net = sock_net(sk); - gid_t group = current_egid(); - gid_t range[2]; + kgid_t group = current_egid(); struct group_info *group_info = get_current_groups(); int i, j, count = group_info->ngroups; kgid_t low, high; - inet_get_ping_group_range_net(net, range, range+1); - low = make_kgid(&init_user_ns, range[0]); - high = make_kgid(&init_user_ns, range[1]); - if (!gid_valid(low) || !gid_valid(high) || gid_lt(high, low)) - return -EACCES; - - if (range[0] <= group && group <= range[1]) + inet_get_ping_group_range_net(net, &low, &high); + if (gid_lte(low, group) && gid_lte(group, high)) return 0; for (i = 0; i < group_info->nblocks; i++) { @@ -845,7 +839,9 @@ static void ping_format_sock(struct sock *sp, struct seq_file *f, bucket, src, srcp, dest, destp, sp->sk_state, sk_wmem_alloc_get(sp), sk_rmem_alloc_get(sp), - 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), + 0, 0L, 0, + from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)), + 0, sock_i_ino(sp), atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops), len); } diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index ff0f071..f242578 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -992,7 +992,9 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) i, src, srcp, dest, destp, sp->sk_state, sk_wmem_alloc_get(sp), sk_rmem_alloc_get(sp), - 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), + 0, 0L, 0, + from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), + 0, sock_i_ino(sp), atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); } diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 1b5ce96..3e78c79 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -76,9 +76,9 @@ static int ipv4_local_port_range(ctl_table *table, int write, } -static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low, gid_t *high) +static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) { - gid_t *data = table->data; + kgid_t *data = table->data; unsigned int seq; do { seq = read_seqbegin(&sysctl_local_ports.lock); @@ -89,12 +89,12 @@ static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low, } /* Update system visible IP port range */ -static void set_ping_group_range(struct ctl_table *table, gid_t range[2]) +static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) { - gid_t *data = table->data; + kgid_t *data = table->data; write_seqlock(&sysctl_local_ports.lock); - data[0] = range[0]; - data[1] = range[1]; + data[0] = low; + data[1] = high; write_sequnlock(&sysctl_local_ports.lock); } @@ -103,21 +103,33 @@ static int ipv4_ping_group_range(ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { + struct user_namespace *user_ns = current_user_ns(); int ret; - gid_t range[2]; + gid_t urange[2]; + kgid_t low, high; ctl_table tmp = { - .data = &range, - .maxlen = sizeof(range), + .data = &urange, + .maxlen = sizeof(urange), .mode = table->mode, .extra1 = &ip_ping_group_range_min, .extra2 = &ip_ping_group_range_max, }; - inet_get_ping_group_range_table(table, range, range + 1); + inet_get_ping_group_range_table(table, &low, &high); + urange[0] = from_kgid_munged(user_ns, low); + urange[1] = from_kgid_munged(user_ns, high); ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); - if (write && ret == 0) - set_ping_group_range(table, range); + if (write && ret == 0) { + low = make_kgid(user_ns, urange[0]); + high = make_kgid(user_ns, urange[1]); + if (!gid_valid(low) || !gid_valid(high) || + (urange[1] < urange[0]) || gid_lt(high, low)) { + low = make_kgid(&init_user_ns, 1); + high = make_kgid(&init_user_ns, 0); + } + set_ping_group_range(table, low, high); + } return ret; } @@ -786,7 +798,7 @@ static struct ctl_table ipv4_net_table[] = { { .procname = "ping_group_range", .data = &init_net.ipv4.sysctl_ping_group_range, - .maxlen = sizeof(init_net.ipv4.sysctl_ping_group_range), + .maxlen = sizeof(gid_t)*2, .mode = 0644, .proc_handler = ipv4_ping_group_range, }, @@ -830,8 +842,8 @@ static __net_init int ipv4_sysctl_init_net(struct net *net) * Sane defaults - nobody may create ping sockets. * Boot scripts should set this to distro-specific group. */ - net->ipv4.sysctl_ping_group_range[0] = 1; - net->ipv4.sysctl_ping_group_range[1] = 0; + net->ipv4.sysctl_ping_group_range[0] = make_kgid(&init_user_ns, 1); + net->ipv4.sysctl_ping_group_range[1] = make_kgid(&init_user_ns, 0); tcp_init_mem(net); diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 1e15c5b..36f02f9 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2393,7 +2393,7 @@ void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo) EXPORT_SYMBOL(tcp_proc_unregister); static void get_openreq4(const struct sock *sk, const struct request_sock *req, - struct seq_file *f, int i, int uid, int *len) + struct seq_file *f, int i, kuid_t uid, int *len) { const struct inet_request_sock *ireq = inet_rsk(req); long delta = req->expires - jiffies; @@ -2410,7 +2410,7 @@ static void get_openreq4(const struct sock *sk, const struct request_sock *req, 1, /* timers active (only the expire timer) */ jiffies_delta_to_clock_t(delta), req->retrans, - uid, + from_kuid_munged(seq_user_ns(f), uid), 0, /* non standard timer */ 0, /* open_requests have no inode */ atomic_read(&sk->sk_refcnt), @@ -2461,7 +2461,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len) timer_active, jiffies_delta_to_clock_t(timer_expires - jiffies), icsk->icsk_retransmits, - sock_i_uid(sk), + from_kuid_munged(seq_user_ns(f), sock_i_uid(sk)), icsk->icsk_probes_out, sock_i_ino(sk), atomic_read(&sk->sk_refcnt), sk, diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 6f6d1ac..c4e6432 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2110,7 +2110,9 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f, bucket, src, srcp, dest, destp, sp->sk_state, sk_wmem_alloc_get(sp), sk_rmem_alloc_get(sp), - 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), + 0, 0L, 0, + from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)), + 0, sock_i_ino(sp), atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops), len); } diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c index 16d0960..d2f336e 100644 --- a/net/ipv4/udp_diag.c +++ b/net/ipv4/udp_diag.c @@ -24,7 +24,9 @@ static int sk_diag_dump(struct sock *sk, struct sk_buff *skb, if (!inet_diag_bc_sk(bc, sk)) return 0; - return inet_sk_diag_fill(sk, NULL, skb, req, NETLINK_CB(cb->skb).pid, + return inet_sk_diag_fill(sk, NULL, skb, req, + sk_user_ns(NETLINK_CB(cb->skb).ssk), + NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); } @@ -69,6 +71,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, goto out; err = inet_sk_diag_fill(sk, NULL, rep, req, + sk_user_ns(NETLINK_CB(in_skb).ssk), NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, 0, nlh); if (err < 0) { |