63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
|
|
* common.h - Common internal operations performed by the module subsystem
|
|
*
|
|
* Created on: Aug 11, 2008
|
|
* Author: Stefan Bucur <stefanb@zytor.com>
|
|
*/
|
|
|
|
#ifndef COMMON_H_
|
|
#define COMMON_H_
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <sys/module.h>
|
|
#include <linux/list.h>
|
|
|
|
#include "elfutils.h"
|
|
|
|
// Performs an operation and jumps to a given label if an error occurs
|
|
#define CHECKED(res, expr, error) \
|
|
do { \
|
|
(res) = (expr); \
|
|
if ((res) < 0) \
|
|
goto error; \
|
|
} while (0)
|
|
|
|
#define MIN(x,y) (((x) < (y)) ? (x) : (y))
|
|
#define MAX(x,y) (((x) > (y)) ? (x) : (y))
|
|
|
|
//#define ELF_DEBUG
|
|
|
|
#ifdef ELF_DEBUG
|
|
#define DBG_PRINT(fmt, args...) fprintf(stderr, "[ELF] " fmt, ##args)
|
|
#else
|
|
#define DBG_PRINT(fmt, args...) // Expand to nothing
|
|
#endif
|
|
|
|
// User-space debugging routines
|
|
#ifdef ELF_DEBUG
|
|
extern void print_elf_ehdr(Elf32_Ehdr * ehdr);
|
|
extern void print_elf_symbols(struct elf_module *module);
|
|
#endif //ELF_DEBUG
|
|
|
|
/*
|
|
* Image files manipulation routines
|
|
*/
|
|
|
|
extern int image_load(struct elf_module *module);
|
|
extern int image_unload(struct elf_module *module);
|
|
extern int image_read(void *buff, size_t size, struct elf_module *module);
|
|
extern int image_skip(size_t size, struct elf_module *module);
|
|
extern int image_seek(Elf32_Off offset, struct elf_module *module);
|
|
|
|
extern struct module_dep *module_dep_alloc(struct elf_module *module);
|
|
|
|
extern int check_header_common(Elf32_Ehdr * elf_hdr);
|
|
|
|
extern int enforce_dependency(struct elf_module *req, struct elf_module *dep);
|
|
extern int clear_dependency(struct elf_module *req, struct elf_module *dep);
|
|
|
|
extern int check_symbols(struct elf_module *module);
|
|
|
|
#endif /* COMMON_H_ */
|