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| author | Kay Sievers <kay@vrfy.org> | 2014-01-18 17:31:41 +0100 |
|---|---|---|
| committer | Kay Sievers <kay@vrfy.org> | 2014-01-18 17:31:41 +0100 |
| commit | 8e1dcbfc9654ada7a1deac571f0187fec8454571 (patch) | |
| tree | 83c8e2206135e8f920ae313472158ef0c871e2d9 /namespace.h | |
| parent | a4017447d1da830993fcb62b5ec45fd14b17c566 (diff) | |
| download | kdbus-bus-8e1dcbfc9654ada7a1deac571f0187fec8454571.tar.gz kdbus-bus-8e1dcbfc9654ada7a1deac571f0187fec8454571.tar.bz2 kdbus-bus-8e1dcbfc9654ada7a1deac571f0187fec8454571.zip | |
limit the number of buses and connections per user
Diffstat (limited to 'namespace.h')
| -rw-r--r-- | namespace.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/namespace.h b/namespace.h index a5dbb9b8ba6..e36ce939d64 100644 --- a/namespace.h +++ b/namespace.h @@ -13,6 +13,7 @@ #ifndef __KDBUS_NS_H #define __KDBUS_NS_H +#include <linux/hashtable.h> #include <linux/idr.h> /** @@ -33,6 +34,7 @@ * @msg_seq_last: Last used message id sequence number * @ns_entry: Entry in parent namespace * @bus_list: Buses in this namespace + * @user_hash: Accounting of user resources * * A namespace provides a "control" device node. Every namespace has its * own major number for its endpoint device nodes. @@ -61,6 +63,25 @@ struct kdbus_ns { atomic64_t msg_seq_last; struct list_head ns_entry; struct list_head bus_list; + DECLARE_HASHTABLE(user_hash, 6); +}; + +/** + * struct kdbus_ns_user - resource accounting for users + * @kref: Reference counter + * @ns: Namespace of the user + * @hentry: Entry in namespace user map + * @uid: UID of the user + * @buses: Number of buses the user has created + * @connections: Number of connections the user has created + */ +struct kdbus_ns_user { + struct kref kref; + struct kdbus_ns *ns; + struct hlist_node hentry; + kuid_t uid; + atomic_t buses; + atomic_t connections; }; extern struct kdbus_ns *kdbus_ns_init; @@ -74,4 +95,7 @@ int kdbus_ns_new(struct kdbus_ns *parent, const char *name, int kdbus_ns_make_user(void __user *buf, struct kdbus_cmd_make **make, char **name); struct kdbus_ns *kdbus_ns_find_by_major(unsigned int major); + +struct kdbus_ns_user *kdbus_ns_user_ref(struct kdbus_ns *ns, kuid_t uid); +struct kdbus_ns_user *kdbus_ns_user_unref(struct kdbus_ns_user *user); #endif |