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#ifndef __LINUX_TEXTSEARCH_H
#define __LINUX_TEXTSEARCH_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/slab.h>
struct module;
struct ts_config;
#define TS_AUTOLOAD 1
#define TS_IGNORECASE 2
struct ts_state
{
unsigned int offset;
char cb[40];
};
struct ts_ops
{
const char *name;
struct ts_config * (*init)(const void *, unsigned int, gfp_t, int);
unsigned int (*find)(struct ts_config *,
struct ts_state *);
void (*destroy)(struct ts_config *);
void * (*get_pattern)(struct ts_config *);
unsigned int (*get_pattern_len)(struct ts_config *);
struct module *owner;
struct list_head list;
};
struct ts_config
{
struct ts_ops *ops;
int flags;
unsigned int (*get_next_block)(unsigned int consumed,
const u8 **dst,
struct ts_config *conf,
struct ts_state *state);
void (*finish)(struct ts_config *conf,
struct ts_state *state);
};
static inline unsigned int textsearch_next(struct ts_config *conf,
struct ts_state *state)
{
unsigned int ret = conf->ops->find(conf, state);
if (conf->finish)
conf->finish(conf, state);
return ret;
}
static inline unsigned int textsearch_find(struct ts_config *conf,
struct ts_state *state)
{
state->offset = 0;
return textsearch_next(conf, state);
}
static inline void *textsearch_get_pattern(struct ts_config *conf)
{
return conf->ops->get_pattern(conf);
}
static inline unsigned int textsearch_get_pattern_len(struct ts_config *conf)
{
return conf->ops->get_pattern_len(conf);
}
extern int textsearch_register(struct ts_ops *);
extern int textsearch_unregister(struct ts_ops *);
extern struct ts_config *textsearch_prepare(const char *, const void *,
unsigned int, gfp_t, int);
extern void textsearch_destroy(struct ts_config *conf);
extern unsigned int textsearch_find_continuous(struct ts_config *,
struct ts_state *,
const void *, unsigned int);
#define TS_PRIV_ALIGNTO 8
#define TS_PRIV_ALIGN(len) (((len) + TS_PRIV_ALIGNTO-1) & ~(TS_PRIV_ALIGNTO-1))
static inline struct ts_config *alloc_ts_config(size_t payload,
gfp_t gfp_mask)
{
struct ts_config *conf;
conf = kzalloc(TS_PRIV_ALIGN(sizeof(*conf)) + payload, gfp_mask);
if (conf == NULL)
return ERR_PTR(-ENOMEM);
return conf;
}
static inline void *ts_config_priv(struct ts_config *conf)
{
return ((u8 *) conf + TS_PRIV_ALIGN(sizeof(struct ts_config)));
}
#endif
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