/* SPDX-License-Identifier: GPL-2.0+ */ #pragma once /* * Contains declarations that exist in the kernel which have been CUSTOMISED for * testing purposes to faciliate userland VMA testing. */ #ifdef CONFIG_MMUextern unsigned long mmap_min_addr;extern unsigned long dac_mmap_min_addr;#else#define mmap_min_addr		0UL#define dac_mmap_min_addr	0UL#endif #define TASK_SIZE ((1ul << 47)-PAGE_SIZE) /* * The shared stubs do not implement this, it amounts to an fprintf(STDERR,...) * either way :) */#define pr_warn_once pr_err struct anon_vma {	struct anon_vma *root;	struct rb_root_cached rb_root; 	/* Test fields. */	bool was_cloned;	bool was_unlinked;}; static inline void unlink_anon_vmas(struct vm_area_struct *vma){	/* For testing purposes, indicate that the anon_vma was unlinked. */	vma->anon_vma->was_unlinked = true;} static inline void vma_start_write(struct vm_area_struct *vma){	/* Used to indicate to tests that a write operation has begun. */	vma->vm_lock_seq++;} static inline __must_checkint vma_start_write_killable(struct vm_area_struct *vma){	/* Used to indicate to tests that a write operation has begun. */	vma->vm_lock_seq++;	return 0;} static inline int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src,				 enum vma_operation operation){	/* For testing purposes. We indicate that an anon_vma has been cloned. */	if (src->anon_vma != NULL) {		dst->anon_vma = src->anon_vma;		dst->anon_vma->was_cloned = true;	} 	return 0;} static inline int __anon_vma_prepare(struct vm_area_struct *vma){	struct anon_vma *anon_vma = calloc(1, sizeof(struct anon_vma)); 	if (!anon_vma)		return -ENOMEM; 	anon_vma->root = anon_vma;	vma->anon_vma = anon_vma; 	return 0;} static inline int anon_vma_prepare(struct vm_area_struct *vma){	if (likely(vma->anon_vma))		return 0; 	return __anon_vma_prepare(vma);} static inline void vma_lock_init(struct vm_area_struct *vma, bool reset_refcnt){	if (reset_refcnt)		refcount_set(&vma->vm_refcnt, 0);} static inline unsigned long vma_kernel_pagesize(struct vm_area_struct *vma){	return PAGE_SIZE;}