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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#ifndef _INTERNAL_H#define _INTERNAL_H
#include <linux/sched.h>#include <linux/wait_bit.h>#include <linux/cred.h>#include <linux/key-type.h>#include <linux/task_work.h>#include <linux/keyctl.h>#include <linux/refcount.h>#include <linux/watch_queue.h>#include <linux/compat.h>#include <linux/mm.h>#include <linux/vmalloc.h>
struct iovec;
#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 " "FMT"\n", ##__VA_ARGS__)#else#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_dead;extern struct key_type key_type_user;extern struct key_type key_type_logon;
/*****************************************************************************//* * Keep track of keys for a user. * * This needs to be separate to user_struct to avoid a refcount-loop * (user_struct pins some keyrings which pin this struct). * * We also keep track of keys under request from userspace for this UID here. */struct key_user { struct rb_node node; struct mutex cons_lock; /* construction initiation lock */ spinlock_t lock; refcount_t usage; /* for accessing qnkeys & qnbytes */ atomic_t nkeys; /* number of keys */ atomic_t nikeys; /* number of instantiated keys */ kuid_t uid; int qnkeys; /* number of keys allocated to this user */ int qnbytes; /* number of bytes allocated to this user */};
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(kuid_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 kmem_cache *key_jar;extern struct rb_root key_serial_tree;extern spinlock_t key_serial_lock;extern struct mutex key_construction_mutex;extern wait_queue_head_t request_key_conswq;
extern void key_set_index_key(struct keyring_index_key *index_key);extern struct key_type *key_type_lookup(const char *type);extern void key_type_put(struct key_type *ktype);
extern int __key_link_lock(struct key *keyring, const struct keyring_index_key *index_key);extern int __key_move_lock(struct key *l_keyring, struct key *u_keyring, const struct keyring_index_key *index_key);extern int __key_link_begin(struct key *keyring, const struct keyring_index_key *index_key, struct assoc_array_edit **_edit);extern int __key_link_check_live_key(struct key *keyring, struct key *key);extern void __key_link(struct key *keyring, struct key *key, struct assoc_array_edit **_edit);extern void __key_link_end(struct key *keyring, const struct keyring_index_key *index_key, struct assoc_array_edit *edit);
extern key_ref_t find_key_to_update(key_ref_t keyring_ref, const struct keyring_index_key *index_key);
struct keyring_search_context { struct keyring_index_key index_key; const struct cred *cred; struct key_match_data match_data; unsigned flags;#define KEYRING_SEARCH_NO_STATE_CHECK 0x0001 /* Skip state checks */#define KEYRING_SEARCH_DO_STATE_CHECK 0x0002 /* Override NO_STATE_CHECK */#define KEYRING_SEARCH_NO_UPDATE_TIME 0x0004 /* Don't update times */#define KEYRING_SEARCH_NO_CHECK_PERM 0x0008 /* Don't check permissions */#define KEYRING_SEARCH_DETECT_TOO_DEEP 0x0010 /* Give an error on excessive depth */#define KEYRING_SEARCH_SKIP_EXPIRED 0x0020 /* Ignore expired keys (intention to replace) */#define KEYRING_SEARCH_RECURSE 0x0040 /* Search child keyrings also */
int (*iterator)(const void *object, void *iterator_data);
/* Internal stuff */ int skipped_ret; bool possessed; key_ref_t result; time64_t now;};
extern bool key_default_cmp(const struct key *key, const struct key_match_data *match_data);extern key_ref_t keyring_search_rcu(key_ref_t keyring_ref, struct keyring_search_context *ctx);
extern key_ref_t search_cred_keyrings_rcu(struct keyring_search_context *ctx);extern key_ref_t search_process_keyrings_rcu(struct keyring_search_context *ctx);
extern struct key *find_keyring_by_name(const char *name, bool uid_keyring);
extern int look_up_user_keyrings(struct key **, struct key **);extern struct key *get_user_session_keyring_rcu(const struct cred *);extern int install_thread_keyring_to_cred(struct cred *);extern int install_process_keyring_to_cred(struct cred *);extern int install_session_keyring_to_cred(struct cred *, struct key *);
extern struct key *request_key_and_link(struct key_type *type, const char *description, struct key_tag *domain_tag, const void *callout_info, size_t callout_len, void *aux, struct key *dest_keyring, unsigned long flags);
extern bool lookup_user_key_possessed(const struct key *key, const struct key_match_data *match_data);
extern long join_session_keyring(const char *name);extern void key_change_session_keyring(struct callback_head *twork);
extern struct work_struct key_gc_work;extern unsigned key_gc_delay;extern void keyring_gc(struct key *keyring, time64_t limit);extern void keyring_restriction_gc(struct key *keyring, struct key_type *dead_type);void key_set_expiry(struct key *key, time64_t expiry);extern void key_schedule_gc(time64_t gc_at);extern void key_schedule_gc_links(void);extern void key_gc_keytype(struct key_type *ktype);
extern int key_task_permission(const key_ref_t key_ref, const struct cred *cred, enum key_need_perm need_perm);
static inline void notify_key(struct key *key, enum key_notification_subtype subtype, u32 aux){#ifdef CONFIG_KEY_NOTIFICATIONS struct key_notification n = { .watch.type = WATCH_TYPE_KEY_NOTIFY, .watch.subtype = subtype, .watch.info = watch_sizeof(n), .key_id = key_serial(key), .aux = aux, };
post_watch_notification(key->watchers, &n.watch, current_cred(), n.key_id);#endif}
/* * Check to see whether permission is granted to use a key in the desired way. */static inline int key_permission(const key_ref_t key_ref, enum key_need_perm need_perm){ return key_task_permission(key_ref, current_cred(), need_perm);}
extern struct key_type key_type_request_key_auth;extern struct key *request_key_auth_new(struct key *target, const char *op, const void *callout_info, size_t callout_len, struct key *dest_keyring);struct request_key_auth *request_key_auth_get(struct key *authkey);void request_key_auth_put(struct request_key_auth *rka);
extern struct key *key_get_instantiation_authkey(key_serial_t target_id);
/* * Determine whether a key is dead. */static inline bool key_is_dead(const struct key *key, time64_t limit){ time64_t expiry = key->expiry;
if (expiry != TIME64_MAX) { if (!(key->type->flags & KEY_TYPE_INSTANT_REAP)) expiry += key_gc_delay; if (expiry <= limit) return true; }
return key->flags & ((1 << KEY_FLAG_DEAD) | (1 << KEY_FLAG_INVALIDATED)) || key->domain_tag->removed;}
/* * keyctl() functions */extern long keyctl_get_keyring_ID(key_serial_t, int);extern long keyctl_join_session_keyring(const char __user *);extern long keyctl_update_key(key_serial_t, const void __user *, size_t);extern long keyctl_revoke_key(key_serial_t);extern long keyctl_keyring_clear(key_serial_t);extern long keyctl_keyring_link(key_serial_t, key_serial_t);extern long keyctl_keyring_move(key_serial_t, key_serial_t, key_serial_t, unsigned int);extern long keyctl_keyring_unlink(key_serial_t, key_serial_t);extern long keyctl_describe_key(key_serial_t, char __user *, size_t);extern long keyctl_keyring_search(key_serial_t, const char __user *, const char __user *, key_serial_t);extern long keyctl_read_key(key_serial_t, char __user *, size_t);extern long keyctl_chown_key(key_serial_t, uid_t, gid_t);extern long keyctl_setperm_key(key_serial_t, key_perm_t);extern long keyctl_instantiate_key(key_serial_t, const void __user *, size_t, key_serial_t);extern long keyctl_negate_key(key_serial_t, unsigned, key_serial_t);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);extern long keyctl_session_to_parent(void);extern long keyctl_reject_key(key_serial_t, unsigned, unsigned, key_serial_t);extern long keyctl_instantiate_key_iov(key_serial_t, const struct iovec __user *, unsigned, key_serial_t);extern long keyctl_invalidate_key(key_serial_t);extern long keyctl_restrict_keyring(key_serial_t id, const char __user *_type, const char __user *_restriction);#ifdef CONFIG_PERSISTENT_KEYRINGSextern long keyctl_get_persistent(uid_t, key_serial_t);extern unsigned persistent_keyring_expiry;#elsestatic inline long keyctl_get_persistent(uid_t uid, key_serial_t destring){ return -EOPNOTSUPP;}#endif
#ifdef CONFIG_KEY_DH_OPERATIONSextern long keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *, size_t, struct keyctl_kdf_params __user *);extern long __keyctl_dh_compute(struct keyctl_dh_params __user *, char __user *, size_t, struct keyctl_kdf_params *);#ifdef CONFIG_COMPATextern long compat_keyctl_dh_compute(struct keyctl_dh_params __user *params, char __user *buffer, size_t buflen, struct compat_keyctl_kdf_params __user *kdf);#endif#define KEYCTL_KDF_MAX_OUTPUT_LEN 1024 /* max length of KDF output */#define KEYCTL_KDF_MAX_OI_LEN 64 /* max length of otherinfo */#elsestatic inline long keyctl_dh_compute(struct keyctl_dh_params __user *params, char __user *buffer, size_t buflen, struct keyctl_kdf_params __user *kdf){ return -EOPNOTSUPP;}
#ifdef CONFIG_COMPATstatic inline long compat_keyctl_dh_compute( struct keyctl_dh_params __user *params, char __user *buffer, size_t buflen, struct keyctl_kdf_params __user *kdf){ return -EOPNOTSUPP;}#endif#endif
#ifdef CONFIG_ASYMMETRIC_KEY_TYPEextern long keyctl_pkey_query(key_serial_t, const char __user *, struct keyctl_pkey_query __user *);
extern long keyctl_pkey_verify(const struct keyctl_pkey_params __user *, const char __user *, const void __user *, const void __user *);
extern long keyctl_pkey_e_d_s(int, const struct keyctl_pkey_params __user *, const char __user *, const void __user *, void __user *);#elsestatic inline long keyctl_pkey_query(key_serial_t id, const char __user *_info, struct keyctl_pkey_query __user *_res){ return -EOPNOTSUPP;}
static inline long keyctl_pkey_verify(const struct keyctl_pkey_params __user *params, const char __user *_info, const void __user *_in, const void __user *_in2){ return -EOPNOTSUPP;}
static inline long keyctl_pkey_e_d_s(int op, const struct keyctl_pkey_params __user *params, const char __user *_info, const void __user *_in, void __user *_out){ return -EOPNOTSUPP;}#endif
extern long keyctl_capabilities(unsigned char __user *_buffer, size_t buflen);
#ifdef CONFIG_KEY_NOTIFICATIONSextern long keyctl_watch_key(key_serial_t, int, int);#elsestatic inline long keyctl_watch_key(key_serial_t key_id, int watch_fd, int watch_id){ return -EOPNOTSUPP;}#endif
/* * Debugging key validation */#ifdef KEY_DEBUGGINGextern void __key_check(const struct key *);
static inline void key_check(const struct key *key){ if (key && (IS_ERR(key) || key->magic != KEY_DEBUG_MAGIC)) __key_check(key);}
#else
#define key_check(key) do {} while(0)
#endif#endif /* _INTERNAL_H */