Contributors: 22
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Srikar Dronamraju |
583 |
58.30% |
6 |
11.11% |
| Oleg Nesterov |
187 |
18.70% |
15 |
27.78% |
| Anton Arapov |
58 |
5.80% |
4 |
7.41% |
| Linus Torvalds (pre-git) |
25 |
2.50% |
6 |
11.11% |
| Peter Zijlstra |
18 |
1.80% |
1 |
1.85% |
| Jiri Olsa |
13 |
1.30% |
1 |
1.85% |
| David A. Long |
12 |
1.20% |
2 |
3.70% |
| Nadav Amit |
12 |
1.20% |
1 |
1.85% |
| Victor Kamensky |
12 |
1.20% |
1 |
1.85% |
| Matt Helsley |
11 |
1.10% |
1 |
1.85% |
| Ravi Bangoria |
10 |
1.00% |
1 |
1.85% |
| Pavel Machek |
10 |
1.00% |
1 |
1.85% |
| Russell King |
8 |
0.80% |
2 |
3.70% |
| Andrii Nakryiko |
8 |
0.80% |
2 |
3.70% |
| Thomas Gleixner |
7 |
0.70% |
2 |
3.70% |
| Jason Wessel |
5 |
0.50% |
1 |
1.85% |
| Greg Ungerer |
4 |
0.40% |
1 |
1.85% |
| Motohiro Kosaki |
4 |
0.40% |
1 |
1.85% |
| Ingo Molnar |
4 |
0.40% |
1 |
1.85% |
| Rusty Russell |
3 |
0.30% |
1 |
1.85% |
| Andrew Morton |
3 |
0.30% |
2 |
3.70% |
| Ananth N. Mavinakayanahalli |
3 |
0.30% |
1 |
1.85% |
| Total |
1000 |
|
54 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _LINUX_UPROBES_H
#define _LINUX_UPROBES_H
/*
* User-space Probes (UProbes)
*
* Copyright (C) IBM Corporation, 2008-2012
* Authors:
* Srikar Dronamraju
* Jim Keniston
* Copyright (C) 2011-2012 Red Hat, Inc., Peter Zijlstra
*/
#include <linux/errno.h>
#include <linux/rbtree.h>
#include <linux/types.h>
#include <linux/wait.h>
struct uprobe;
struct vm_area_struct;
struct mm_struct;
struct inode;
struct notifier_block;
struct page;
#define UPROBE_HANDLER_REMOVE 1
#define UPROBE_HANDLER_MASK 1
#define MAX_URETPROBE_DEPTH 64
struct uprobe_consumer {
/*
* handler() can return UPROBE_HANDLER_REMOVE to signal the need to
* unregister uprobe for current process. If UPROBE_HANDLER_REMOVE is
* returned, filter() callback has to be implemented as well and it
* should return false to "confirm" the decision to uninstall uprobe
* for the current process. If filter() is omitted or returns true,
* UPROBE_HANDLER_REMOVE is effectively ignored.
*/
int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
int (*ret_handler)(struct uprobe_consumer *self,
unsigned long func,
struct pt_regs *regs);
bool (*filter)(struct uprobe_consumer *self, struct mm_struct *mm);
struct list_head cons_node;
};
#ifdef CONFIG_UPROBES
#include <asm/uprobes.h>
enum uprobe_task_state {
UTASK_RUNNING,
UTASK_SSTEP,
UTASK_SSTEP_ACK,
UTASK_SSTEP_TRAPPED,
};
/*
* uprobe_task: Metadata of a task while it singlesteps.
*/
struct uprobe_task {
enum uprobe_task_state state;
union {
struct {
struct arch_uprobe_task autask;
unsigned long vaddr;
};
struct {
struct callback_head dup_xol_work;
unsigned long dup_xol_addr;
};
};
struct uprobe *active_uprobe;
unsigned long xol_vaddr;
struct arch_uprobe *auprobe;
struct return_instance *return_instances;
unsigned int depth;
};
struct return_instance {
struct uprobe *uprobe;
unsigned long func;
unsigned long stack; /* stack pointer */
unsigned long orig_ret_vaddr; /* original return address */
bool chained; /* true, if instance is nested */
struct return_instance *next; /* keep as stack */
};
enum rp_check {
RP_CHECK_CALL,
RP_CHECK_CHAIN_CALL,
RP_CHECK_RET,
};
struct xol_area;
struct uprobes_state {
struct xol_area *xol_area;
};
extern void __init uprobes_init(void);
extern int set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
extern int set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
extern bool is_swbp_insn(uprobe_opcode_t *insn);
extern bool is_trap_insn(uprobe_opcode_t *insn);
extern unsigned long uprobe_get_swbp_addr(struct pt_regs *regs);
extern unsigned long uprobe_get_trap_addr(struct pt_regs *regs);
extern int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
extern struct uprobe *uprobe_register(struct inode *inode, loff_t offset, loff_t ref_ctr_offset, struct uprobe_consumer *uc);
extern int uprobe_apply(struct uprobe *uprobe, struct uprobe_consumer *uc, bool);
extern void uprobe_unregister_nosync(struct uprobe *uprobe, struct uprobe_consumer *uc);
extern void uprobe_unregister_sync(void);
extern int uprobe_mmap(struct vm_area_struct *vma);
extern void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end);
extern void uprobe_start_dup_mmap(void);
extern void uprobe_end_dup_mmap(void);
extern void uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm);
extern void uprobe_free_utask(struct task_struct *t);
extern void uprobe_copy_process(struct task_struct *t, unsigned long flags);
extern int uprobe_post_sstep_notifier(struct pt_regs *regs);
extern int uprobe_pre_sstep_notifier(struct pt_regs *regs);
extern void uprobe_notify_resume(struct pt_regs *regs);
extern bool uprobe_deny_signal(void);
extern bool arch_uprobe_skip_sstep(struct arch_uprobe *aup, struct pt_regs *regs);
extern void uprobe_clear_state(struct mm_struct *mm);
extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr);
extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
extern unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs);
extern bool arch_uretprobe_is_alive(struct return_instance *ret, enum rp_check ctx, struct pt_regs *regs);
extern bool arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs);
extern void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
void *src, unsigned long len);
extern void uprobe_handle_trampoline(struct pt_regs *regs);
extern void *arch_uprobe_trampoline(unsigned long *psize);
extern unsigned long uprobe_get_trampoline_vaddr(void);
#else /* !CONFIG_UPROBES */
struct uprobes_state {
};
static inline void uprobes_init(void)
{
}
#define uprobe_get_trap_addr(regs) instruction_pointer(regs)
static inline struct uprobe *
uprobe_register(struct inode *inode, loff_t offset, loff_t ref_ctr_offset, struct uprobe_consumer *uc)
{
return ERR_PTR(-ENOSYS);
}
static inline int
uprobe_apply(struct uprobe* uprobe, struct uprobe_consumer *uc, bool add)
{
return -ENOSYS;
}
static inline void
uprobe_unregister_nosync(struct uprobe *uprobe, struct uprobe_consumer *uc)
{
}
static inline void uprobe_unregister_sync(void)
{
}
static inline int uprobe_mmap(struct vm_area_struct *vma)
{
return 0;
}
static inline void
uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end)
{
}
static inline void uprobe_start_dup_mmap(void)
{
}
static inline void uprobe_end_dup_mmap(void)
{
}
static inline void
uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm)
{
}
static inline void uprobe_notify_resume(struct pt_regs *regs)
{
}
static inline bool uprobe_deny_signal(void)
{
return false;
}
static inline void uprobe_free_utask(struct task_struct *t)
{
}
static inline void uprobe_copy_process(struct task_struct *t, unsigned long flags)
{
}
static inline void uprobe_clear_state(struct mm_struct *mm)
{
}
#endif /* !CONFIG_UPROBES */
#endif /* _LINUX_UPROBES_H */