diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2025-07-20 14:21:14 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-08-21 21:09:19 +0300 |
| commit | 33d7b2beaf34a3c0f6406bc76f6e1b1755150ad9 (patch) | |
| tree | f1819b080373540bc5c68352b5d22eba9d108d17 /include/linux | |
| parent | 82afdd05a16a424409682e06a53d6afcda038d30 (diff) | |
| download | linux-33d7b2beaf34a3c0f6406bc76f6e1b1755150ad9.tar.xz | |
uprobes: Add uprobe_write function
Adding uprobe_write function that does what uprobe_write_opcode did
so far, but allows to pass verify callback function that checks the
memory location before writing the opcode.
It will be used in following changes to implement specific checking
logic for instruction update.
The uprobe_write_opcode now calls uprobe_write with verify_opcode as
the verify callback.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20250720112133.244369-5-jolsa@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/uprobes.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 7447e15559b8..e13382054435 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -187,6 +187,9 @@ struct uprobes_state { struct xol_area *xol_area; }; +typedef int (*uprobe_write_verify_t)(struct page *page, unsigned long vaddr, + uprobe_opcode_t *opcode); + extern void __init uprobes_init(void); extern int set_swbp(struct arch_uprobe *aup, struct vm_area_struct *vma, unsigned long vaddr); extern int set_orig_insn(struct arch_uprobe *aup, struct vm_area_struct *vma, unsigned long vaddr); @@ -195,6 +198,8 @@ 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 vm_area_struct *vma, unsigned long vaddr, uprobe_opcode_t); +extern int uprobe_write(struct arch_uprobe *auprobe, struct vm_area_struct *vma, const unsigned long opcode_vaddr, + uprobe_opcode_t opcode, uprobe_write_verify_t verify); 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); |