/* internal.h: authentication token and access key management internal defs
*
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2003-5, 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
#ifndef _INTERNAL_H
#define _INTERNAL_H
-#include <linux/key.h>
+#include <linux/key-type.h>
#include <linux/key-ui.h>
-#if 0
-#define kenter(FMT, a...) printk("==> %s("FMT")\n",__FUNCTION__ , ## a)
-#define kleave(FMT, a...) printk("<== %s()"FMT"\n",__FUNCTION__ , ## a)
-#define kdebug(FMT, a...) printk(FMT"\n" , ## a)
+static inline __attribute__((format(printf, 1, 2)))
+void no_printk(const char *fmt, ...)
+{
+}
+
+#ifdef __KDEBUG
+#define kenter(FMT, ...) \
+ printk(KERN_DEBUG "==> %s("FMT")\n", __func__, ##__VA_ARGS__)
+#define kleave(FMT, ...) \
+ printk(KERN_DEBUG "<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
+#define kdebug(FMT, ...) \
+ printk(KERN_DEBUG "xxx" FMT"yyy\n", ##__VA_ARGS__)
#else
-#define kenter(FMT, a...) do {} while(0)
-#define kleave(FMT, a...) do {} while(0)
-#define kdebug(FMT, a...) do {} while(0)
+#define kenter(FMT, ...) \
+ no_printk(KERN_DEBUG "==> %s("FMT")\n", __func__, ##__VA_ARGS__)
+#define kleave(FMT, ...) \
+ no_printk(KERN_DEBUG "<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
+#define kdebug(FMT, ...) \
+ no_printk(KERN_DEBUG FMT"\n", ##__VA_ARGS__)
#endif
extern struct key_type key_type_user;
*/
struct key_user {
struct rb_node node;
- struct list_head consq; /* construction queue */
+ struct mutex cons_lock; /* construction initiation lock */
spinlock_t lock;
atomic_t usage; /* for accessing qnkeys & qnbytes */
atomic_t nkeys; /* number of keys */
int qnbytes; /* number of bytes allocated to this user */
};
-#define KEYQUOTA_MAX_KEYS 100
-#define KEYQUOTA_MAX_BYTES 10000
-#define KEYQUOTA_LINK_BYTES 4 /* a link in a keyring is worth 4 bytes */
-
extern struct rb_root key_user_tree;
extern spinlock_t key_user_lock;
extern struct key_user root_key_user;
extern struct key_user *key_user_lookup(uid_t uid);
extern void key_user_put(struct key_user *user);
+/*
+ * key quota limits
+ * - root has its own separate limits to everyone else
+ */
+extern unsigned key_quota_root_maxkeys;
+extern unsigned key_quota_root_maxbytes;
+extern unsigned key_quota_maxkeys;
+extern unsigned key_quota_maxbytes;
+
+#define KEYQUOTA_LINK_BYTES 4 /* a link in a keyring is worth 4 bytes */
extern struct rb_root key_serial_tree;
extern spinlock_t key_serial_lock;
extern struct semaphore key_alloc_sem;
-extern struct rw_semaphore key_construction_sem;
+extern struct mutex key_construction_mutex;
extern wait_queue_head_t request_key_conswq;
-extern void keyring_publish_name(struct key *keyring);
-
extern int __key_link(struct key *keyring, struct key *key);
extern key_ref_t __keyring_search_one(key_ref_t keyring_ref,
key_match_func_t match,
struct task_struct *tsk);
-extern struct key *find_keyring_by_name(const char *name, key_serial_t bound);
+extern struct key *find_keyring_by_name(const char *name, bool skip_perm_check);
extern int install_thread_keyring(struct task_struct *tsk);
extern int install_process_keyring(struct task_struct *tsk);
extern struct key *request_key_and_link(struct key_type *type,
const char *description,
- const char *callout_info,
+ const void *callout_info,
+ size_t callout_len,
+ void *aux,
struct key *dest_keyring,
unsigned long flags);
struct request_key_auth {
struct key *target_key;
struct task_struct *context;
- const char *callout_info;
+ void *callout_info;
+ size_t callout_len;
pid_t pid;
};
extern struct key_type key_type_request_key_auth;
extern struct key *request_key_auth_new(struct key *target,
- const char *callout_info);
+ const void *callout_info,
+ size_t callout_len);
extern struct key *key_get_instantiation_authkey(key_serial_t target_id);
extern long keyctl_set_reqkey_keyring(int);
extern long keyctl_set_timeout(key_serial_t, unsigned);
extern long keyctl_assume_authority(key_serial_t);
-
+extern long keyctl_get_security(key_serial_t keyid, char __user *buffer,
+ size_t buflen);
/*
* debugging key validation