1 #ifndef _LINUX_UPROBES_H
2 #define _LINUX_UPROBES_H
4 * User-space Probes (UProbes)
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 * Copyright (C) IBM Corporation, 2008-2012
24 * Copyright (C) 2011-2012 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
27 #include <linux/errno.h>
28 #include <linux/rbtree.h>
30 struct vm_area_struct;
32 #ifdef CONFIG_ARCH_SUPPORTS_UPROBES
33 # include <asm/uprobes.h>
36 /* flags that denote/change uprobes behaviour */
38 /* Have a copy of original instruction */
39 #define UPROBE_COPY_INSN 0x1
41 /* Dont run handlers when first register/ last unregister in progress*/
42 #define UPROBE_RUN_HANDLER 0x2
43 /* Can skip singlestep */
44 #define UPROBE_SKIP_SSTEP 0x4
46 struct uprobe_consumer {
47 int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
49 * filter is optional; If a filter exists, handler is run
50 * if and only if filter returns true.
52 bool (*filter)(struct uprobe_consumer *self, struct task_struct *task);
54 struct uprobe_consumer *next;
58 enum uprobe_task_state {
67 * uprobe_task: Metadata of a task while it singlesteps.
70 enum uprobe_task_state state;
71 struct arch_uprobe_task autask;
73 struct uprobe *active_uprobe;
75 unsigned long xol_vaddr;
79 extern int __weak set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
80 extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr, bool verify);
81 extern bool __weak is_swbp_insn(uprobe_opcode_t *insn);
82 extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
83 extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
84 extern int uprobe_mmap(struct vm_area_struct *vma);
85 extern void uprobe_free_utask(struct task_struct *t);
86 extern void uprobe_copy_process(struct task_struct *t);
87 extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs);
88 extern int uprobe_post_sstep_notifier(struct pt_regs *regs);
89 extern int uprobe_pre_sstep_notifier(struct pt_regs *regs);
90 extern void uprobe_notify_resume(struct pt_regs *regs);
91 extern bool uprobe_deny_signal(void);
92 extern bool __weak arch_uprobe_skip_sstep(struct arch_uprobe *aup, struct pt_regs *regs);
93 #else /* !CONFIG_UPROBES */
95 uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc)
100 uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc)
103 static inline int uprobe_mmap(struct vm_area_struct *vma)
107 static inline void uprobe_notify_resume(struct pt_regs *regs)
110 static inline bool uprobe_deny_signal(void)
114 static inline unsigned long uprobe_get_swbp_addr(struct pt_regs *regs)
118 static inline void uprobe_free_utask(struct task_struct *t)
121 static inline void uprobe_copy_process(struct task_struct *t)
124 #endif /* !CONFIG_UPROBES */
125 #endif /* _LINUX_UPROBES_H */