modpost.h 2.7 KB

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  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. #include "elfconfig.h"
  12. #if KERNEL_ELFCLASS == ELFCLASS32
  13. #define Elf_Ehdr Elf32_Ehdr
  14. #define Elf_Shdr Elf32_Shdr
  15. #define Elf_Sym Elf32_Sym
  16. #define Elf_Addr Elf32_Addr
  17. #define Elf_Section Elf32_Section
  18. #define ELF_ST_BIND ELF32_ST_BIND
  19. #define ELF_ST_TYPE ELF32_ST_TYPE
  20. #define Elf_Rela Elf32_Rela
  21. #define ELF_R_SYM ELF32_R_SYM
  22. #define ELF_R_TYPE ELF32_R_TYPE
  23. #else
  24. #define Elf_Ehdr Elf64_Ehdr
  25. #define Elf_Shdr Elf64_Shdr
  26. #define Elf_Sym Elf64_Sym
  27. #define Elf_Addr Elf64_Addr
  28. #define Elf_Section Elf64_Section
  29. #define ELF_ST_BIND ELF64_ST_BIND
  30. #define ELF_ST_TYPE ELF64_ST_TYPE
  31. #define Elf_Rela Elf64_Rela
  32. #define ELF_R_SYM ELF64_R_SYM
  33. #define ELF_R_TYPE ELF64_R_TYPE
  34. #endif
  35. #if KERNEL_ELFDATA != HOST_ELFDATA
  36. static inline void __endian(const void *src, void *dest, unsigned int size)
  37. {
  38. unsigned int i;
  39. for (i = 0; i < size; i++)
  40. ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
  41. }
  42. #define TO_NATIVE(x) \
  43. ({ \
  44. typeof(x) __x; \
  45. __endian(&(x), &(__x), sizeof(__x)); \
  46. __x; \
  47. })
  48. #else /* endianness matches */
  49. #define TO_NATIVE(x) (x)
  50. #endif
  51. #define NOFAIL(ptr) do_nofail((ptr), #ptr)
  52. void *do_nofail(void *ptr, const char *expr);
  53. struct buffer {
  54. char *p;
  55. int pos;
  56. int size;
  57. };
  58. void __attribute__((format(printf, 2, 3)))
  59. buf_printf(struct buffer *buf, const char *fmt, ...);
  60. void
  61. buf_write(struct buffer *buf, const char *s, int len);
  62. struct module {
  63. struct module *next;
  64. const char *name;
  65. struct symbol *unres;
  66. int seen;
  67. int skip;
  68. int has_init;
  69. int has_cleanup;
  70. struct buffer dev_table_buf;
  71. char srcversion[25];
  72. };
  73. struct elf_info {
  74. unsigned long size;
  75. Elf_Ehdr *hdr;
  76. Elf_Shdr *sechdrs;
  77. Elf_Sym *symtab_start;
  78. Elf_Sym *symtab_stop;
  79. const char *strtab;
  80. char *modinfo;
  81. unsigned int modinfo_len;
  82. };
  83. /* file2alias.c */
  84. void handle_moddevtable(struct module *mod, struct elf_info *info,
  85. Elf_Sym *sym, const char *symname);
  86. void add_moddevtable(struct buffer *buf, struct module *mod);
  87. /* sumversion.c */
  88. void maybe_frob_rcs_version(const char *modfilename,
  89. char *version,
  90. void *modinfo,
  91. unsigned long modinfo_offset);
  92. void get_src_version(const char *modname, char sum[], unsigned sumlen);
  93. /* from modpost.c */
  94. void *grab_file(const char *filename, unsigned long *size);
  95. char* get_next_line(unsigned long *pos, void *file, unsigned long size);
  96. void release_file(void *file, unsigned long size);
  97. void fatal(const char *fmt, ...);
  98. void warn(const char *fmt, ...);