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gerrit-public.fairphone.software / kernel / msm-4.9 / e3343e6a2819ff5d0dfc4bb5c9fb7f9a4d04da73 / . / include / linux / uprobes.h
blob: 58699182e9a736ba4bf6cfed94ff4e1d2b47462c [file] [log] [blame]
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]1#ifndef _LINUX_UPROBES_H
2#define _LINUX_UPROBES_H
3/*
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]4 * User-space Probes (UProbes)
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]5 *
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.
10 *
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.
15 *
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.
19 *
Ingo Molnar35aa6212012-02-22 11:37:29 +0100[diff] [blame]20 * Copyright (C) IBM Corporation, 2008-2012
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]21 * Authors:
22 * Srikar Dronamraju
23 * Jim Keniston
Ingo Molnar35aa6212012-02-22 11:37:29 +0100[diff] [blame]24 * Copyright (C) 2011-2012 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]25 */
26
27#include <linux/errno.h>
28#include <linux/rbtree.h>
29
30struct vm_area_struct;
31#ifdef CONFIG_ARCH_SUPPORTS_UPROBES
32#include <asm/uprobes.h>
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]33#endif
34
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]35/* flags that denote/change uprobes behaviour */
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]36
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]37/* Have a copy of original instruction */
Srikar Dronamraju900771a2012-03-12 14:55:14 +0530[diff] [blame]38#define UPROBE_COPY_INSN 0x1
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]39
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]40/* Dont run handlers when first register/ last unregister in progress*/
Srikar Dronamraju900771a2012-03-12 14:55:14 +0530[diff] [blame]41#define UPROBE_RUN_HANDLER 0x2
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]42
43struct uprobe_consumer {
44 int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
45 /*
46 * filter is optional; If a filter exists, handler is run
47 * if and only if filter returns true.
48 */
49 bool (*filter)(struct uprobe_consumer *self, struct task_struct *task);
50
51 struct uprobe_consumer *next;
52};
53
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]54#ifdef CONFIG_UPROBES
Srikar Dronamrajue3343e62012-03-12 14:55:30 +0530[diff] [blame^]55extern int __weak set_bkpt(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
56extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr, bool verify);
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]57extern bool __weak is_bkpt_insn(uprobe_opcode_t *insn);
Srikar Dronamrajue3343e62012-03-12 14:55:30 +0530[diff] [blame^]58extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
59extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]60extern int uprobe_mmap(struct vm_area_struct *vma);
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]61#else /* CONFIG_UPROBES is not defined */
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]62static inline int
Srikar Dronamrajue3343e62012-03-12 14:55:30 +0530[diff] [blame^]63uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc)
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]64{
65 return -ENOSYS;
66}
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]67static inline void
Srikar Dronamrajue3343e62012-03-12 14:55:30 +0530[diff] [blame^]68uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc)
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]69{
70}
Ingo Molnar7b2d81d2012-02-17 09:27:41 +0100[diff] [blame]71static inline int uprobe_mmap(struct vm_area_struct *vma)
Srikar Dronamraju2b144492012-02-09 14:56:42 +0530[diff] [blame]72{
73 return 0;
74}
75#endif /* CONFIG_UPROBES */
76#endif /* _LINUX_UPROBES_H */