From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/um/os-Linux/user_syms.c | 122 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 arch/um/os-Linux/user_syms.c (limited to 'arch/um/os-Linux/user_syms.c') diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c new file mode 100644 index 000000000..fd575ecbc --- /dev/null +++ b/arch/um/os-Linux/user_syms.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +#define __NO_FORTIFY +#include +#include + +/* Some of this are builtin function (some are not but could in the future), + * so I *must* declare good prototypes for them and then EXPORT them. + * The kernel code uses the macro defined by include/linux/string.h, + * so I undef macros; the userspace code does not include that and I + * add an EXPORT for the glibc one. + */ + +#undef strlen +#undef strstr +#undef memcpy +#undef memset + +extern size_t strlen(const char *); +extern void *memmove(void *, const void *, size_t); +extern void *memset(void *, int, size_t); +extern int printf(const char *, ...); + +/* If it's not defined, the export is included in lib/string.c.*/ +#ifdef __HAVE_ARCH_STRSTR +EXPORT_SYMBOL(strstr); +#endif + +#ifndef __x86_64__ +extern void *memcpy(void *, const void *, size_t); +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memmove); +EXPORT_SYMBOL(memset); +#endif + +EXPORT_SYMBOL(printf); + +/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms. + * However, the modules will use the CRC defined *here*, no matter if it is + * good; so the versions of these symbols will always match + */ +#define EXPORT_SYMBOL_PROTO(sym) \ + int sym(void); \ + EXPORT_SYMBOL(sym); + +extern void readdir64(void) __attribute__((weak)); +EXPORT_SYMBOL(readdir64); +extern void truncate64(void) __attribute__((weak)); +EXPORT_SYMBOL(truncate64); + +#ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA +EXPORT_SYMBOL(vsyscall_ehdr); +EXPORT_SYMBOL(vsyscall_end); +#endif + +EXPORT_SYMBOL_PROTO(__errno_location); + +EXPORT_SYMBOL_PROTO(access); +EXPORT_SYMBOL_PROTO(open); +EXPORT_SYMBOL_PROTO(open64); +EXPORT_SYMBOL_PROTO(close); +EXPORT_SYMBOL_PROTO(read); +EXPORT_SYMBOL_PROTO(write); +EXPORT_SYMBOL_PROTO(dup2); +EXPORT_SYMBOL_PROTO(__xstat); +EXPORT_SYMBOL_PROTO(__lxstat); +EXPORT_SYMBOL_PROTO(__lxstat64); +EXPORT_SYMBOL_PROTO(__fxstat64); +EXPORT_SYMBOL_PROTO(lseek); +EXPORT_SYMBOL_PROTO(lseek64); +EXPORT_SYMBOL_PROTO(chown); +EXPORT_SYMBOL_PROTO(fchown); +EXPORT_SYMBOL_PROTO(truncate); +EXPORT_SYMBOL_PROTO(ftruncate64); +EXPORT_SYMBOL_PROTO(utime); +EXPORT_SYMBOL_PROTO(utimes); +EXPORT_SYMBOL_PROTO(futimes); +EXPORT_SYMBOL_PROTO(chmod); +EXPORT_SYMBOL_PROTO(fchmod); +EXPORT_SYMBOL_PROTO(rename); +EXPORT_SYMBOL_PROTO(__xmknod); + +EXPORT_SYMBOL_PROTO(symlink); +EXPORT_SYMBOL_PROTO(link); +EXPORT_SYMBOL_PROTO(unlink); +EXPORT_SYMBOL_PROTO(readlink); + +EXPORT_SYMBOL_PROTO(mkdir); +EXPORT_SYMBOL_PROTO(rmdir); +EXPORT_SYMBOL_PROTO(opendir); +EXPORT_SYMBOL_PROTO(readdir); +EXPORT_SYMBOL_PROTO(closedir); +EXPORT_SYMBOL_PROTO(seekdir); +EXPORT_SYMBOL_PROTO(telldir); + +EXPORT_SYMBOL_PROTO(ioctl); + +EXPORT_SYMBOL_PROTO(pread64); +EXPORT_SYMBOL_PROTO(pwrite64); + +EXPORT_SYMBOL_PROTO(statfs); +EXPORT_SYMBOL_PROTO(statfs64); + +EXPORT_SYMBOL_PROTO(getuid); + +EXPORT_SYMBOL_PROTO(fsync); +EXPORT_SYMBOL_PROTO(fdatasync); + +EXPORT_SYMBOL_PROTO(lstat64); +EXPORT_SYMBOL_PROTO(fstat64); +EXPORT_SYMBOL_PROTO(mknod); + +/* Export symbols used by GCC for the stack protector. */ +extern void __stack_smash_handler(void *) __attribute__((weak)); +EXPORT_SYMBOL(__stack_smash_handler); + +extern long __guard __attribute__((weak)); +EXPORT_SYMBOL(__guard); + +#ifdef _FORTIFY_SOURCE +extern int __sprintf_chk(char *str, int flag, size_t strlen, const char *format); +EXPORT_SYMBOL(__sprintf_chk); +#endif -- cgit v1.2.3