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1 | #ifndef _LINUX_UPROBES_H |
2 | #define _LINUX_UPROBES_H | |
3 | /* | |
7b2d81d4 | 4 | * User-space Probes (UProbes) |
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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 | * | |
35aa621b | 20 | * Copyright (C) IBM Corporation, 2008-2012 |
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21 | * Authors: |
22 | * Srikar Dronamraju | |
23 | * Jim Keniston | |
35aa621b | 24 | * Copyright (C) 2011-2012 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com> |
2b144498 SD |
25 | */ |
26 | ||
27 | #include <linux/errno.h> | |
28 | #include <linux/rbtree.h> | |
29 | ||
30 | struct vm_area_struct; | |
31 | #ifdef CONFIG_ARCH_SUPPORTS_UPROBES | |
32 | #include <asm/uprobes.h> | |
2b144498 SD |
33 | #endif |
34 | ||
2b144498 | 35 | /* flags that denote/change uprobes behaviour */ |
7b2d81d4 | 36 | |
2b144498 | 37 | /* Have a copy of original instruction */ |
900771a4 | 38 | #define UPROBE_COPY_INSN 0x1 |
7b2d81d4 | 39 | |
2b144498 | 40 | /* Dont run handlers when first register/ last unregister in progress*/ |
900771a4 | 41 | #define UPROBE_RUN_HANDLER 0x2 |
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42 | |
43 | struct 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 | ||
2b144498 | 54 | #ifdef CONFIG_UPROBES |
3ff54efd SD |
55 | extern int __weak set_bkpt(struct mm_struct *mm, struct arch_uprobe *auprobe, unsigned long vaddr); |
56 | extern int __weak set_orig_insn(struct mm_struct *mm, struct arch_uprobe *auprobe, unsigned long vaddr, bool verify); | |
2b144498 | 57 | extern bool __weak is_bkpt_insn(uprobe_opcode_t *insn); |
7b2d81d4 IM |
58 | extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *consumer); |
59 | extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *consumer); | |
60 | extern int uprobe_mmap(struct vm_area_struct *vma); | |
2b144498 | 61 | #else /* CONFIG_UPROBES is not defined */ |
7b2d81d4 IM |
62 | static inline int |
63 | uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *consumer) | |
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64 | { |
65 | return -ENOSYS; | |
66 | } | |
7b2d81d4 IM |
67 | static inline void |
68 | uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *consumer) | |
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69 | { |
70 | } | |
7b2d81d4 | 71 | static inline int uprobe_mmap(struct vm_area_struct *vma) |
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72 | { |
73 | return 0; | |
74 | } | |
75 | #endif /* CONFIG_UPROBES */ | |
76 | #endif /* _LINUX_UPROBES_H */ |