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#ifndef SYMFILTER_H
#define SYMFILTER_H
/* This file describes the interface for parsing the list of symbols. Currently,
this is just a text file with each symbol on a separate line. We build an
in-memory linked list of symbols out of this image.
*/
#include <stdio.h>
#include <libelf.h>
#include <gelf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <libebl.h> /* defines bool */
typedef struct symfilter_list_t symfilter_list_t;
struct symfilter_list_t {
symfilter_list_t *next;
const char *name;
unsigned int len; /* strlen(name) */
Elf32_Word index;
GElf_Sym symbol;
};
typedef struct symfilter_t {
int fd; /* symbol-filter-file descriptor */
off_t fsize; /* size of file */
void *mmap; /* symbol-fiter-file memory mapping */
section_info_t symtab;
section_info_t hash;
symfilter_list_t *symbols;
/* The total number of symbols in the symfilter. */
unsigned int num_symbols;
/* The total number of bytes occupied by the names of the symbols, including
the terminating null characters.
*/
unsigned int total_name_length;
bool *symbols_to_keep;
/* must be the same as the number of symbols in the dynamic table! */
int num_symbols_to_keep;
} symfilter_t;
void build_symfilter(const char *name, Elf *elf, symfilter_t *filter, off_t);
void destroy_symfilter(symfilter_t *);
#endif/*SYMFILTER_H*/
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