mirror of
git://git.yoctoproject.org/linux-yocto.git
synced 2026-01-27 12:47:24 +01:00
8c6174503c
Instead of exporting the set of functions provided by glibc that are needed for hostfs_user.c, just build that into the kernel image whenever hostfs is built, and then export _those_ functions cleanly, to be independent of the libc implementation. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#define __NO_FORTIFY
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
|
|
/* 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);
|
|
|
|
#ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA
|
|
EXPORT_SYMBOL(vsyscall_ehdr);
|
|
EXPORT_SYMBOL(vsyscall_end);
|
|
#endif
|
|
|
|
/* 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
|