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Diffstat (limited to 'include/linux/uprobes.h')
-rw-r--r--include/linux/uprobes.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 60beb5dc7977..0bdc72f36905 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -92,6 +92,22 @@ struct uprobe_task {
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 {
@@ -128,6 +144,7 @@ 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);