diff options
Diffstat (limited to 'arch/arm64/kernel/ptrace.c')
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 101040a37d40..f49b349e16a3 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1033,6 +1033,35 @@ static int pac_generic_keys_set(struct task_struct *target, #endif /* CONFIG_CHECKPOINT_RESTORE */ #endif /* CONFIG_ARM64_PTR_AUTH */ +#ifdef CONFIG_ARM64_TAGGED_ADDR_ABI +static int tagged_addr_ctrl_get(struct task_struct *target, + const struct user_regset *regset, + struct membuf to) +{ + long ctrl = get_tagged_addr_ctrl(target); + + if (IS_ERR_VALUE(ctrl)) + return ctrl; + + return membuf_write(&to, &ctrl, sizeof(ctrl)); +} + +static int tagged_addr_ctrl_set(struct task_struct *target, const struct + user_regset *regset, unsigned int pos, + unsigned int count, const void *kbuf, const + void __user *ubuf) +{ + int ret; + long ctrl; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ctrl, 0, -1); + if (ret) + return ret; + + return set_tagged_addr_ctrl(target, ctrl); +} +#endif + enum aarch64_regset { REGSET_GPR, REGSET_FPR, @@ -1052,6 +1081,9 @@ enum aarch64_regset { REGSET_PACG_KEYS, #endif #endif +#ifdef CONFIG_ARM64_TAGGED_ADDR_ABI + REGSET_TAGGED_ADDR_CTRL, +#endif }; static const struct user_regset aarch64_regsets[] = { @@ -1149,6 +1181,16 @@ static const struct user_regset aarch64_regsets[] = { }, #endif #endif +#ifdef CONFIG_ARM64_TAGGED_ADDR_ABI + [REGSET_TAGGED_ADDR_CTRL] = { + .core_note_type = NT_ARM_TAGGED_ADDR_CTRL, + .n = 1, + .size = sizeof(long), + .align = sizeof(long), + .regset_get = tagged_addr_ctrl_get, + .set = tagged_addr_ctrl_set, + }, +#endif }; static const struct user_regset_view user_aarch64_view = { |