1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <stdarg.h> 4 #include <string.h> 5 #include <sys/types.h> 6 #include <sys/stat.h> 7 #include <sys/mman.h> 8 #include <fcntl.h> 9 #include <unistd.h> 10 #include <elf.h> 11 12 #include "elfconfig.h" 13 14 #if KERNEL_ELFCLASS == ELFCLASS32 15 16 #define Elf_Ehdr Elf32_Ehdr 17 #define Elf_Shdr Elf32_Shdr 18 #define Elf_Sym Elf32_Sym 19 #define ELF_ST_BIND ELF32_ST_BIND 20 #define ELF_ST_TYPE ELF32_ST_TYPE 21 22 #else 23 24 #define Elf_Ehdr Elf64_Ehdr 25 #define Elf_Shdr Elf64_Shdr 26 #define Elf_Sym Elf64_Sym 27 #define ELF_ST_BIND ELF64_ST_BIND 28 #define ELF_ST_TYPE ELF64_ST_TYPE 29 30 #endif 31 32 #if KERNEL_ELFDATA != HOST_ELFDATA 33 34 static inline void __endian(const void *src, void *dest, unsigned int size) 35 { 36 unsigned int i; 37 for (i = 0; i < size; i++) 38 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; 39 } 40 41 42 43 #define TO_NATIVE(x) \ 44 ({ \ 45 typeof(x) __x; \ 46 __endian(&(x), &(__x), sizeof(__x)); \ 47 __x; \ 48 }) 49 50 #else /* endianness matches */ 51 52 #define TO_NATIVE(x) (x) 53 54 #endif 55 56 #define NOFAIL(ptr) do_nofail((ptr), #ptr) 57 void *do_nofail(void *ptr, const char *expr); 58 59 struct buffer { 60 char *p; 61 int pos; 62 int size; 63 }; 64 65 void __attribute__((format(printf, 2, 3))) 66 buf_printf(struct buffer *buf, const char *fmt, ...); 67 68 void 69 buf_write(struct buffer *buf, const char *s, int len); 70 71 struct module { 72 struct module *next; 73 const char *name; 74 struct symbol *unres; 75 int seen; 76 int skip; 77 int has_init; 78 int has_cleanup; 79 struct buffer dev_table_buf; 80 char srcversion[25]; 81 }; 82 83 struct elf_info { 84 unsigned long size; 85 Elf_Ehdr *hdr; 86 Elf_Shdr *sechdrs; 87 Elf_Sym *symtab_start; 88 Elf_Sym *symtab_stop; 89 const char *strtab; 90 char *modinfo; 91 unsigned int modinfo_len; 92 }; 93 94 void handle_moddevtable(struct module *mod, struct elf_info *info, 95 Elf_Sym *sym, const char *symname); 96 97 void add_moddevtable(struct buffer *buf, struct module *mod); 98 99 void maybe_frob_rcs_version(const char *modfilename, 100 char *version, 101 void *modinfo, 102 unsigned long modinfo_offset); 103 void get_src_version(const char *modname, char sum[], unsigned sumlen); 104 105 void *grab_file(const char *filename, unsigned long *size); 106 char* get_next_line(unsigned long *pos, void *file, unsigned long size); 107 void release_file(void *file, unsigned long size); 108