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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 11:11:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-02 11:11:09 -0700
commit437589a74b6a590d175f86cf9f7b2efcee7765e7 (patch)
tree37bf8635b1356d80ef002b00e84f3faf3d555a63 /include/net
parent68d47a137c3bef754923bccf73fb639c9b0bbd5e (diff)
parent72235465864d84cedb2d9f26f8e1de824ee20339 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace changes from Eric Biederman: "This is a mostly modest set of changes to enable basic user namespace support. This allows the code to code to compile with user namespaces enabled and removes the assumption there is only the initial user namespace. Everything is converted except for the most complex of the filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs, nfs, ocfs2 and xfs as those patches need a bit more review. The strategy is to push kuid_t and kgid_t values are far down into subsystems and filesystems as reasonable. Leaving the make_kuid and from_kuid operations to happen at the edge of userspace, as the values come off the disk, and as the values come in from the network. Letting compile type incompatible compile errors (present when user namespaces are enabled) guide me to find the issues. The most tricky areas have been the places where we had an implicit union of uid and gid values and were storing them in an unsigned int. Those places were converted into explicit unions. I made certain to handle those places with simple trivial patches. Out of that work I discovered we have generic interfaces for storing quota by projid. I had never heard of the project identifiers before. Adding full user namespace support for project identifiers accounts for most of the code size growth in my git tree. Ultimately there will be work to relax privlige checks from "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing root in a user names to do those things that today we only forbid to non-root users because it will confuse suid root applications. While I was pushing kuid_t and kgid_t changes deep into the audit code I made a few other cleanups. I capitalized on the fact we process netlink messages in the context of the message sender. I removed usage of NETLINK_CRED, and started directly using current->tty. Some of these patches have also made it into maintainer trees, with no problems from identical code from different trees showing up in linux-next. After reading through all of this code I feel like I might be able to win a game of kernel trivial pursuit." Fix up some fairly trivial conflicts in netfilter uid/git logging code. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits) userns: Convert the ufs filesystem to use kuid/kgid where appropriate userns: Convert the udf filesystem to use kuid/kgid where appropriate userns: Convert ubifs to use kuid/kgid userns: Convert squashfs to use kuid/kgid where appropriate userns: Convert reiserfs to use kuid and kgid where appropriate userns: Convert jfs to use kuid/kgid where appropriate userns: Convert jffs2 to use kuid and kgid where appropriate userns: Convert hpfs to use kuid and kgid where appropriate userns: Convert btrfs to use kuid/kgid where appropriate userns: Convert bfs to use kuid/kgid where appropriate userns: Convert affs to use kuid/kgid wherwe appropriate userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids userns: On ia64 deal with current_uid and current_gid being kuid and kgid userns: On ppc convert current_uid from a kuid before printing. userns: Convert s390 getting uid and gid system calls to use kuid and kgid userns: Convert s390 hypfs to use kuid and kgid where appropriate userns: Convert binder ipc to use kuids userns: Teach security_path_chown to take kuids and kgids userns: Add user namespace support to IMA userns: Convert EVM to deal with kuids and kgids in it's hmac computation ...
Diffstat (limited to 'include/net')
-rw-r--r--include/net/ax25.h4
-rw-r--r--include/net/ipv6.h5
-rw-r--r--include/net/netlabel.h2
-rw-r--r--include/net/netns/ipv4.h3
-rw-r--r--include/net/sch_generic.h3
-rw-r--r--include/net/sock.h11
-rw-r--r--include/net/tcp.h3
-rw-r--r--include/net/xfrm.h23
8 files changed, 35 insertions, 19 deletions
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 5d2352154cf6..53539acbd81a 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -157,7 +157,7 @@ enum {
typedef struct ax25_uid_assoc {
struct hlist_node uid_node;
atomic_t refcount;
- uid_t uid;
+ kuid_t uid;
ax25_address call;
} ax25_uid_assoc;
@@ -434,7 +434,7 @@ extern unsigned long ax25_display_timer(struct timer_list *);
/* ax25_uid.c */
extern int ax25_uid_policy;
-extern ax25_uid_assoc *ax25_findbyuid(uid_t);
+extern ax25_uid_assoc *ax25_findbyuid(kuid_t);
extern int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
extern const struct file_operations ax25_uid_fops;
extern void ax25_uid_free(void);
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 01c34b363a34..c8a202436e01 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -222,7 +222,10 @@ struct ip6_flowlabel {
struct ipv6_txoptions *opt;
unsigned long linger;
u8 share;
- u32 owner;
+ union {
+ struct pid *pid;
+ kuid_t uid;
+ } owner;
unsigned long lastuse;
unsigned long expires;
struct net *fl_net;
diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index f67440970d7e..2c95d55f7914 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -110,7 +110,7 @@ struct cipso_v4_doi;
/* NetLabel audit information */
struct netlbl_audit {
u32 secid;
- uid_t loginuid;
+ kuid_t loginuid;
u32 sessionid;
};
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index eb24dbccd81e..69e50c789d96 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -5,6 +5,7 @@
#ifndef __NETNS_IPV4_H__
#define __NETNS_IPV4_H__
+#include <linux/uidgid.h>
#include <net/inet_frag.h>
struct tcpm_hash_bucket;
@@ -62,7 +63,7 @@ struct netns_ipv4 {
int sysctl_icmp_ratemask;
int sysctl_icmp_errors_use_inbound_ifaddr;
- unsigned int sysctl_ping_group_range[2];
+ kgid_t sysctl_ping_group_range[2];
long sysctl_tcp_mem[3];
atomic_t dev_addr_genid;
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index d9611e032418..4616f468d599 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -188,7 +188,8 @@ struct tcf_proto_ops {
unsigned long (*get)(struct tcf_proto*, u32 handle);
void (*put)(struct tcf_proto*, unsigned long);
- int (*change)(struct tcf_proto*, unsigned long,
+ int (*change)(struct sk_buff *,
+ struct tcf_proto*, unsigned long,
u32 handle, struct nlattr **,
unsigned long *);
int (*delete)(struct tcf_proto*, unsigned long);
diff --git a/include/net/sock.h b/include/net/sock.h
index 6e6ec18fb6d0..0d7e9834d9be 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -606,6 +606,15 @@ static inline void sk_add_bind_node(struct sock *sk,
#define sk_for_each_bound(__sk, node, list) \
hlist_for_each_entry(__sk, node, list, sk_bind_node)
+static inline struct user_namespace *sk_user_ns(struct sock *sk)
+{
+ /* Careful only use this in a context where these parameters
+ * can not change and must all be valid, such as recvmsg from
+ * userspace.
+ */
+ return sk->sk_socket->file->f_cred->user_ns;
+}
+
/* Sock flags */
enum sock_flags {
SOCK_DEAD,
@@ -1662,7 +1671,7 @@ static inline void sock_graft(struct sock *sk, struct socket *parent)
write_unlock_bh(&sk->sk_callback_lock);
}
-extern int sock_i_uid(struct sock *sk);
+extern kuid_t sock_i_uid(struct sock *sk);
extern unsigned long sock_i_ino(struct sock *sk);
static inline struct dst_entry *
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 1f000ffe7075..9a0021d16d91 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1510,7 +1510,8 @@ struct tcp_iter_state {
sa_family_t family;
enum tcp_seq_states state;
struct sock *syn_wait_sk;
- int bucket, offset, sbucket, num, uid;
+ int bucket, offset, sbucket, num;
+ kuid_t uid;
loff_t last_pos;
};
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 639dd1316d37..411d83c9821d 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -671,7 +671,7 @@ struct xfrm_spi_skb_cb {
/* Audit Information */
struct xfrm_audit {
u32 secid;
- uid_t loginuid;
+ kuid_t loginuid;
u32 sessionid;
};
@@ -690,13 +690,14 @@ static inline struct audit_buffer *xfrm_audit_start(const char *op)
return audit_buf;
}
-static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
+static inline void xfrm_audit_helper_usrinfo(kuid_t auid, u32 ses, u32 secid,
struct audit_buffer *audit_buf)
{
char *secctx;
u32 secctx_len;
- audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses);
+ audit_log_format(audit_buf, " auid=%u ses=%u",
+ from_kuid(&init_user_ns, auid), ses);
if (secid != 0 &&
security_secid_to_secctx(secid, &secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " subj=%s", secctx);
@@ -706,13 +707,13 @@ static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
}
extern void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
- u32 auid, u32 ses, u32 secid);
+ kuid_t auid, u32 ses, u32 secid);
extern void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
- u32 auid, u32 ses, u32 secid);
+ kuid_t auid, u32 ses, u32 secid);
extern void xfrm_audit_state_add(struct xfrm_state *x, int result,
- u32 auid, u32 ses, u32 secid);
+ kuid_t auid, u32 ses, u32 secid);
extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
- u32 auid, u32 ses, u32 secid);
+ kuid_t auid, u32 ses, u32 secid);
extern void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
struct sk_buff *skb);
extern void xfrm_audit_state_replay(struct xfrm_state *x,
@@ -725,22 +726,22 @@ extern void xfrm_audit_state_icvfail(struct xfrm_state *x,
#else
static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
- u32 auid, u32 ses, u32 secid)
+ kuid_t auid, u32 ses, u32 secid)
{
}
static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
- u32 auid, u32 ses, u32 secid)
+ kuid_t auid, u32 ses, u32 secid)
{
}
static inline void xfrm_audit_state_add(struct xfrm_state *x, int result,
- u32 auid, u32 ses, u32 secid)
+ kuid_t auid, u32 ses, u32 secid)
{
}
static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result,
- u32 auid, u32 ses, u32 secid)
+ kuid_t auid, u32 ses, u32 secid)
{
}