diff options
Diffstat (limited to 'arch/um/os-Linux/user_syms.c')
| -rw-r--r-- | arch/um/os-Linux/user_syms.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c new file mode 100644 index 0000000000..a310ae27b4 --- /dev/null +++ b/arch/um/os-Linux/user_syms.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +#define __NO_FORTIFY +#include <linux/types.h> +#include <linux/module.h> + +/* + * This file exports some critical string functions and compiler + * built-in functions (where calls are emitted by the compiler + * itself that we cannot avoid even in kernel code) to modules. + * + * "_user.c" code that previously used exports here such as hostfs + * really should be considered part of the 'hypervisor' and define + * its own API boundary like hostfs does now; don't add exports to + * this file for such cases. + */ + +/* If it's not defined, the export is included in lib/string.c.*/ +#ifdef __HAVE_ARCH_STRSTR +#undef strstr +EXPORT_SYMBOL(strstr); +#endif + +#ifndef __x86_64__ +#undef memcpy +extern void *memcpy(void *, const void *, size_t); +EXPORT_SYMBOL(memcpy); +extern void *memmove(void *, const void *, size_t); +EXPORT_SYMBOL(memmove); +#undef memset +extern void *memset(void *, int, size_t); +EXPORT_SYMBOL(memset); +#endif + +#ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA +/* needed for __access_ok() */ +EXPORT_SYMBOL(vsyscall_ehdr); +EXPORT_SYMBOL(vsyscall_end); +#endif + +#ifdef _FORTIFY_SOURCE +extern int __sprintf_chk(char *str, int flag, size_t len, const char *format); +EXPORT_SYMBOL(__sprintf_chk); +#endif |