diff options
Diffstat (limited to 'security/selinux/ss/ebitmap.h')
| -rw-r--r-- | security/selinux/ss/ebitmap.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/security/selinux/ss/ebitmap.h b/security/selinux/ss/ebitmap.h index 471370233fd9..8bf41055a6cb 100644 --- a/security/selinux/ss/ebitmap.h +++ b/security/selinux/ss/ebitmap.h @@ -32,11 +32,41 @@ struct ebitmap { #define ebitmap_length(e) ((e)->highbit) #define ebitmap_startbit(e) ((e)->node ? (e)->node->startbit : 0) +static inline unsigned int ebitmap_start(struct ebitmap *e, + struct ebitmap_node **n) +{ + *n = e->node; + return ebitmap_startbit(e); +} + static inline void ebitmap_init(struct ebitmap *e) { memset(e, 0, sizeof(*e)); } +static inline unsigned int ebitmap_next(struct ebitmap_node **n, + unsigned int bit) +{ + if ((bit == ((*n)->startbit + MAPSIZE - 1)) && + (*n)->next) { + *n = (*n)->next; + return (*n)->startbit; + } + + return (bit+1); +} + +static inline int ebitmap_node_get_bit(struct ebitmap_node * n, + unsigned int bit) +{ + if (n->map & (MAPBIT << (bit - n->startbit))) + return 1; + return 0; +} + +#define ebitmap_for_each_bit(e, n, bit) \ + for (bit = ebitmap_start(e, &n); bit < ebitmap_length(e); bit = ebitmap_next(&n, bit)) \ + int ebitmap_cmp(struct ebitmap *e1, struct ebitmap *e2); int ebitmap_cpy(struct ebitmap *dst, struct ebitmap *src); int ebitmap_contains(struct ebitmap *e1, struct ebitmap *e2); |