| /* |
| * 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_ */ |