diff options
| -rw-r--r-- | include/linux/bpf.h | 1 | ||||
| -rw-r--r-- | kernel/bpf/syscall.c | 9 | ||||
| -rw-r--r-- | kernel/trace/bpf_trace.c | 10 |
3 files changed, 13 insertions, 7 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 5dd556e89cce..287c956cdbd2 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1702,6 +1702,7 @@ struct bpf_link { * link's semantics is determined by target attach hook */ bool sleepable; + u32 flags; /* rcu is used before freeing, work can be used to schedule that * RCU-based freeing before that, so they never overlap */ diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 56500381c28a..f1d9ee9717a1 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -3228,7 +3228,14 @@ static void bpf_link_show_fdinfo(struct seq_file *m, struct file *filp) char prog_tag[sizeof(prog->tag) * 2 + 1] = { }; if (type < ARRAY_SIZE(bpf_link_type_strs) && bpf_link_type_strs[type]) { - seq_printf(m, "link_type:\t%s\n", bpf_link_type_strs[type]); + if (link->type == BPF_LINK_TYPE_KPROBE_MULTI) + seq_printf(m, "link_type:\t%s\n", link->flags == BPF_F_KPROBE_MULTI_RETURN ? + "kretprobe_multi" : "kprobe_multi"); + else if (link->type == BPF_LINK_TYPE_UPROBE_MULTI) + seq_printf(m, "link_type:\t%s\n", link->flags == BPF_F_UPROBE_MULTI_RETURN ? + "uretprobe_multi" : "uprobe_multi"); + else + seq_printf(m, "link_type:\t%s\n", bpf_link_type_strs[type]); } else { WARN_ONCE(1, "missing BPF_LINK_TYPE(...) for link type %u\n", type); seq_printf(m, "link_type:\t<%u>\n", type); diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 0a06ea6638fe..81d7a4e5ae15 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2466,7 +2466,6 @@ struct bpf_kprobe_multi_link { u32 cnt; u32 mods_cnt; struct module **mods; - u32 flags; }; struct bpf_kprobe_multi_run_ctx { @@ -2586,7 +2585,7 @@ static int bpf_kprobe_multi_link_fill_link_info(const struct bpf_link *link, kmulti_link = container_of(link, struct bpf_kprobe_multi_link, link); info->kprobe_multi.count = kmulti_link->cnt; - info->kprobe_multi.flags = kmulti_link->flags; + info->kprobe_multi.flags = kmulti_link->link.flags; info->kprobe_multi.missed = kmulti_link->fp.nmissed; if (!uaddrs) @@ -2976,7 +2975,7 @@ int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr link->addrs = addrs; link->cookies = cookies; link->cnt = cnt; - link->flags = flags; + link->link.flags = flags; if (cookies) { /* @@ -3045,7 +3044,6 @@ struct bpf_uprobe_multi_link { struct path path; struct bpf_link link; u32 cnt; - u32 flags; struct bpf_uprobe *uprobes; struct task_struct *task; }; @@ -3109,7 +3107,7 @@ static int bpf_uprobe_multi_link_fill_link_info(const struct bpf_link *link, umulti_link = container_of(link, struct bpf_uprobe_multi_link, link); info->uprobe_multi.count = umulti_link->cnt; - info->uprobe_multi.flags = umulti_link->flags; + info->uprobe_multi.flags = umulti_link->link.flags; info->uprobe_multi.pid = umulti_link->task ? task_pid_nr_ns(umulti_link->task, task_active_pid_ns(current)) : 0; @@ -3369,7 +3367,7 @@ int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr link->uprobes = uprobes; link->path = path; link->task = task; - link->flags = flags; + link->link.flags = flags; bpf_link_init(&link->link, BPF_LINK_TYPE_UPROBE_MULTI, &bpf_uprobe_multi_link_lops, prog); |