diff options
Diffstat (limited to 'security/selinux/ss/avtab.h')
| -rw-r--r-- | security/selinux/ss/avtab.h | 111 |
1 files changed, 61 insertions, 50 deletions
diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h index 5fdcb6696bcc..850b3453f259 100644 --- a/security/selinux/ss/avtab.h +++ b/security/selinux/ss/avtab.h @@ -6,45 +6,45 @@ * table is used to represent the type enforcement * tables. * - * Author : Stephen Smalley, <sds@tycho.nsa.gov> + * Author : Stephen Smalley, <stephen.smalley.work@gmail.com> */ -/* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com> - * - * Added conditional policy language extensions - * - * Copyright (C) 2003 Tresys Technology, LLC +/* Updated: Frank Mayer <mayerf@tresys.com> and + * Karl MacMillan <kmacmillan@tresys.com> + * Added conditional policy language extensions + * Copyright (C) 2003 Tresys Technology, LLC * * Updated: Yuichi Nakamura <ynakam@hitachisoft.jp> - * Tuned number of hash slots for avtab to reduce memory usage + * Tuned number of hash slots for avtab to reduce memory usage */ + #ifndef _SS_AVTAB_H_ #define _SS_AVTAB_H_ #include "security.h" struct avtab_key { - u16 source_type; /* source type */ - u16 target_type; /* target type */ - u16 target_class; /* target object class */ -#define AVTAB_ALLOWED 0x0001 -#define AVTAB_AUDITALLOW 0x0002 -#define AVTAB_AUDITDENY 0x0004 -#define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY) -#define AVTAB_TRANSITION 0x0010 -#define AVTAB_MEMBER 0x0020 -#define AVTAB_CHANGE 0x0040 -#define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE) + u16 source_type; /* source type */ + u16 target_type; /* target type */ + u16 target_class; /* target object class */ +#define AVTAB_ALLOWED 0x0001 +#define AVTAB_AUDITALLOW 0x0002 +#define AVTAB_AUDITDENY 0x0004 +#define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY) +#define AVTAB_TRANSITION 0x0010 +#define AVTAB_MEMBER 0x0020 +#define AVTAB_CHANGE 0x0040 +#define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE) /* extended permissions */ #define AVTAB_XPERMS_ALLOWED 0x0100 -#define AVTAB_XPERMS_AUDITALLOW 0x0200 +#define AVTAB_XPERMS_AUDITALLOW 0x0200 #define AVTAB_XPERMS_DONTAUDIT 0x0400 -#define AVTAB_XPERMS (AVTAB_XPERMS_ALLOWED | \ - AVTAB_XPERMS_AUDITALLOW | \ - AVTAB_XPERMS_DONTAUDIT) -#define AVTAB_ENABLED_OLD 0x80000000 /* reserved for used in cond_avtab */ -#define AVTAB_ENABLED 0x8000 /* reserved for used in cond_avtab */ - u16 specified; /* what field is specified */ +#define AVTAB_XPERMS \ + (AVTAB_XPERMS_ALLOWED | AVTAB_XPERMS_AUDITALLOW | \ + AVTAB_XPERMS_DONTAUDIT) +#define AVTAB_ENABLED_OLD 0x80000000 /* reserved for used in cond_avtab */ +#define AVTAB_ENABLED 0x8000 /* reserved for used in cond_avtab */ + u16 specified; /* what field is specified */ }; /* @@ -55,6 +55,7 @@ struct avtab_extended_perms { /* These are not flags. All 256 values may be used */ #define AVTAB_XPERMS_IOCTLFUNCTION 0x01 #define AVTAB_XPERMS_IOCTLDRIVER 0x02 +#define AVTAB_XPERMS_NLMSG 0x03 /* extension of the avtab_key specified */ u8 specified; /* ioctl, netfilter, ... */ /* @@ -82,36 +83,46 @@ struct avtab_node { struct avtab { struct avtab_node **htable; - u32 nel; /* number of elements */ - u32 nslot; /* number of hash slots */ - u32 mask; /* mask to compute hash func */ + u32 nel; /* number of elements */ + u32 nslot; /* number of hash slots */ + u32 mask; /* mask to compute hash func */ }; void avtab_init(struct avtab *h); -int avtab_alloc(struct avtab *, u32); -struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k); +int avtab_alloc(struct avtab *h, u32 nrules); +int avtab_alloc_dup(struct avtab *new, const struct avtab *orig); void avtab_destroy(struct avtab *h); -void avtab_hash_eval(struct avtab *h, char *tag); - -struct policydb; -int avtab_read_item(struct avtab *a, void *fp, struct policydb *pol, - int (*insert)(struct avtab *a, struct avtab_key *k, - struct avtab_datum *d, void *p), - void *p); -int avtab_read(struct avtab *a, void *fp, struct policydb *pol); -int avtab_write_item(struct policydb *p, struct avtab_node *cur, void *fp); -int avtab_write(struct policydb *p, struct avtab *a, void *fp); - -struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, - struct avtab_datum *datum); - -struct avtab_node *avtab_search_node(struct avtab *h, struct avtab_key *key); - -struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified); - -#define MAX_AVTAB_HASH_BITS 16 +#define MAX_AVTAB_HASH_BITS 16 #define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS) -#endif /* _SS_AVTAB_H_ */ +#ifdef CONFIG_SECURITY_SELINUX_DEBUG +void avtab_hash_eval(struct avtab *h, const char *tag); +#else +static inline void avtab_hash_eval(struct avtab *h, const char *tag) +{ +} +#endif +struct policydb; +struct policy_file; +int avtab_read_item(struct avtab *a, struct policy_file *fp, struct policydb *pol, + int (*insert)(struct avtab *a, const struct avtab_key *k, + const struct avtab_datum *d, void *p), + void *p, bool conditional); + +int avtab_read(struct avtab *a, struct policy_file *fp, struct policydb *pol); +int avtab_write_item(struct policydb *p, const struct avtab_node *cur, + struct policy_file *fp); +int avtab_write(struct policydb *p, struct avtab *a, struct policy_file *fp); + +struct avtab_node *avtab_insert_nonunique(struct avtab *h, + const struct avtab_key *key, + const struct avtab_datum *datum); + +struct avtab_node *avtab_search_node(struct avtab *h, + const struct avtab_key *key); +struct avtab_node *avtab_search_node_next(struct avtab_node *node, + u16 specified); + +#endif /* _SS_AVTAB_H_ */ |