1 #include <linux/types.h> 2 #include <linux/module.h> 3 4 /* Some of this are builtin function (some are not but could in the future), 5 * so I *must* declare good prototypes for them and then EXPORT them. 6 * The kernel code uses the macro defined by include/linux/string.h, 7 * so I undef macros; the userspace code does not include that and I 8 * add an EXPORT for the glibc one. 9 */ 10 11 #undef strlen 12 #undef strstr 13 #undef memcpy 14 #undef memset 15 16 extern size_t strlen(const char *); 17 extern void *memmove(void *, const void *, size_t); 18 extern void *memset(void *, int, size_t); 19 extern int printf(const char *, ...); 20 21 /* If it's not defined, the export is included in lib/string.c.*/ 22 #ifdef __HAVE_ARCH_STRSTR 23 EXPORT_SYMBOL(strstr); 24 #endif 25 26 #ifndef __x86_64__ 27 extern void *memcpy(void *, const void *, size_t); 28 EXPORT_SYMBOL(memcpy); 29 #endif 30 31 EXPORT_SYMBOL(memmove); 32 EXPORT_SYMBOL(memset); 33 EXPORT_SYMBOL(printf); 34 35 /* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms. 36 * However, the modules will use the CRC defined *here*, no matter if it is 37 * good; so the versions of these symbols will always match 38 */ 39 #define EXPORT_SYMBOL_PROTO(sym) \ 40 int sym(void); \ 41 EXPORT_SYMBOL(sym); 42 43 extern void readdir64(void) __attribute__((weak)); 44 EXPORT_SYMBOL(readdir64); 45 extern void truncate64(void) __attribute__((weak)); 46 EXPORT_SYMBOL(truncate64); 47 48 #ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA 49 EXPORT_SYMBOL(vsyscall_ehdr); 50 EXPORT_SYMBOL(vsyscall_end); 51 #endif 52 53 EXPORT_SYMBOL_PROTO(__errno_location); 54 55 EXPORT_SYMBOL_PROTO(access); 56 EXPORT_SYMBOL_PROTO(open); 57 EXPORT_SYMBOL_PROTO(open64); 58 EXPORT_SYMBOL_PROTO(close); 59 EXPORT_SYMBOL_PROTO(read); 60 EXPORT_SYMBOL_PROTO(write); 61 EXPORT_SYMBOL_PROTO(dup2); 62 EXPORT_SYMBOL_PROTO(__xstat); 63 EXPORT_SYMBOL_PROTO(__lxstat); 64 EXPORT_SYMBOL_PROTO(__lxstat64); 65 EXPORT_SYMBOL_PROTO(__fxstat64); 66 EXPORT_SYMBOL_PROTO(lseek); 67 EXPORT_SYMBOL_PROTO(lseek64); 68 EXPORT_SYMBOL_PROTO(chown); 69 EXPORT_SYMBOL_PROTO(fchown); 70 EXPORT_SYMBOL_PROTO(truncate); 71 EXPORT_SYMBOL_PROTO(ftruncate64); 72 EXPORT_SYMBOL_PROTO(utime); 73 EXPORT_SYMBOL_PROTO(utimes); 74 EXPORT_SYMBOL_PROTO(futimes); 75 EXPORT_SYMBOL_PROTO(chmod); 76 EXPORT_SYMBOL_PROTO(fchmod); 77 EXPORT_SYMBOL_PROTO(rename); 78 EXPORT_SYMBOL_PROTO(__xmknod); 79 80 EXPORT_SYMBOL_PROTO(symlink); 81 EXPORT_SYMBOL_PROTO(link); 82 EXPORT_SYMBOL_PROTO(unlink); 83 EXPORT_SYMBOL_PROTO(readlink); 84 85 EXPORT_SYMBOL_PROTO(mkdir); 86 EXPORT_SYMBOL_PROTO(rmdir); 87 EXPORT_SYMBOL_PROTO(opendir); 88 EXPORT_SYMBOL_PROTO(readdir); 89 EXPORT_SYMBOL_PROTO(closedir); 90 EXPORT_SYMBOL_PROTO(seekdir); 91 EXPORT_SYMBOL_PROTO(telldir); 92 93 EXPORT_SYMBOL_PROTO(ioctl); 94 95 EXPORT_SYMBOL_PROTO(pread64); 96 EXPORT_SYMBOL_PROTO(pwrite64); 97 98 EXPORT_SYMBOL_PROTO(statfs); 99 EXPORT_SYMBOL_PROTO(statfs64); 100 101 EXPORT_SYMBOL_PROTO(getuid); 102 103 EXPORT_SYMBOL_PROTO(fsync); 104 EXPORT_SYMBOL_PROTO(fdatasync); 105 106 EXPORT_SYMBOL_PROTO(lstat64); 107 EXPORT_SYMBOL_PROTO(fstat64); 108 EXPORT_SYMBOL_PROTO(mknod); 109 110 /* Export symbols used by GCC for the stack protector. */ 111 extern void __stack_smash_handler(void *) __attribute__((weak)); 112 EXPORT_SYMBOL(__stack_smash_handler); 113 114 extern long __guard __attribute__((weak)); 115 EXPORT_SYMBOL(__guard); 116 117 #ifdef _FORTIFY_SOURCE 118 extern int __sprintf_chk(char *str, int flag, size_t strlen, const char *format); 119 EXPORT_SYMBOL(__sprintf_chk); 120 #endif 121