[mirror_ubuntu-bionic-kernel.git] / include / linux / elf-randomize.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ELF_RANDOMIZE_H
#define _ELF_RANDOMIZE_H

struct mm_struct;

#ifndef CONFIG_ARCH_HAS_ELF_RANDOMIZE
static inline unsigned long arch_mmap_rnd(void) { return 0; }
# if defined(arch_randomize_brk) && defined(CONFIG_COMPAT_BRK)
#  define compat_brk_randomized
# endif
# ifndef arch_randomize_brk
#  define arch_randomize_brk(mm)	(mm->brk)
# endif
#else
extern unsigned long arch_mmap_rnd(void);
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
# ifdef CONFIG_COMPAT_BRK
#  define compat_brk_randomized
# endif
#endif

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
2b68f6ca KC	2	#ifndef _ELF_RANDOMIZE_H
	3	#define _ELF_RANDOMIZE_H
	4
204db6ed KC	5	struct mm_struct;
204db6ed KC	6
2b68f6ca KC	7	#ifndef CONFIG_ARCH_HAS_ELF_RANDOMIZE
2b68f6ca KC	8	static inline unsigned long arch_mmap_rnd(void) { return 0; }
204db6ed KC	9	# if defined(arch_randomize_brk) && defined(CONFIG_COMPAT_BRK)
	10	# define compat_brk_randomized
	11	# endif
	12	# ifndef arch_randomize_brk
	13	# define arch_randomize_brk(mm) (mm->brk)
	14	# endif
2b68f6ca KC	15	#else
2b68f6ca KC	16	extern unsigned long arch_mmap_rnd(void);
204db6ed KC	17	extern unsigned long arch_randomize_brk(struct mm_struct *mm);
	18	# ifdef CONFIG_COMPAT_BRK
	19	# define compat_brk_randomized
	20	# endif
2b68f6ca KC	21	#endif
	22
	23	#endif