mirror of
https://github.com/SELinuxProject/selinux
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ed7a6ba24a
Change-Id: I7da601767c3a4ebed7274e33304d8b589a9115fe Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* Author : Stephen Smalley, <sds@epoch.ncsc.mil> */
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/* FLASK */
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/*
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* A security identifier table (sidtab) is a hash table
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* of security context structures indexed by SID value.
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*/
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#ifndef _SEPOL_POLICYDB_SIDTAB_H_
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#define _SEPOL_POLICYDB_SIDTAB_H_
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#include <sepol/policydb/context.h>
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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typedef struct sidtab_node {
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sepol_security_id_t sid; /* security identifier */
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context_struct_t context; /* security context structure */
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struct sidtab_node *next;
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} sidtab_node_t;
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typedef struct sidtab_node *sidtab_ptr_t;
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#define SIDTAB_HASH_BITS 7
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#define SIDTAB_HASH_BUCKETS (1 << SIDTAB_HASH_BITS)
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#define SIDTAB_HASH_MASK (SIDTAB_HASH_BUCKETS-1)
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#define SIDTAB_SIZE SIDTAB_HASH_BUCKETS
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typedef struct {
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sidtab_ptr_t *htable;
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unsigned int nel; /* number of elements */
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unsigned int next_sid; /* next SID to allocate */
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unsigned char shutdown;
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} sidtab_t;
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extern int sepol_sidtab_init(sidtab_t * s);
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extern int sepol_sidtab_insert(sidtab_t * s,
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sepol_security_id_t sid,
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context_struct_t * context);
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extern context_struct_t *sepol_sidtab_search(sidtab_t * s,
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sepol_security_id_t sid);
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extern int sepol_sidtab_map(sidtab_t * s,
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int (*apply) (sepol_security_id_t sid,
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context_struct_t * context,
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void *args), void *args);
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extern void sepol_sidtab_map_remove_on_error(sidtab_t * s,
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int (*apply) (sepol_security_id_t
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s,
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context_struct_t *
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context, void *args),
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void *args);
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extern int sepol_sidtab_context_to_sid(sidtab_t * s, /* IN */
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context_struct_t * context, /* IN */
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sepol_security_id_t * sid); /* OUT */
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extern void sepol_sidtab_hash_eval(sidtab_t * h, char *tag);
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extern void sepol_sidtab_destroy(sidtab_t * s);
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extern void sepol_sidtab_set(sidtab_t * dst, sidtab_t * src);
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extern void sepol_sidtab_shutdown(sidtab_t * s);
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__END_DECLS
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#endif /* _SIDTAB_H_ */
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/* FLASK */
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