1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (c) 2020 Facebook */
4 #include <bpf/bpf_helpers.h>
5 #include <bpf/bpf_core_read.h>
6 #include <bpf/bpf_tracing.h>
9 /* keep in sync with the definition in main.h */
18 extern const void bpf_link_fops __ksym;
19 extern const void bpf_map_fops __ksym;
20 extern const void bpf_prog_fops __ksym;
21 extern const void btf_fops __ksym;
23 const volatile enum bpf_obj_type obj_type = BPF_OBJ_UNKNOWN;
25 static __always_inline __u32 get_obj_id(void *ent, enum bpf_obj_type type)
29 return BPF_CORE_READ((struct bpf_prog *)ent, aux, id);
31 return BPF_CORE_READ((struct bpf_map *)ent, id);
33 return BPF_CORE_READ((struct btf *)ent, id);
35 return BPF_CORE_READ((struct bpf_link *)ent, id);
42 int iter(struct bpf_iter__task_file *ctx)
44 struct file *file = ctx->file;
45 struct task_struct *task = ctx->task;
46 struct pid_iter_entry e;
54 fops = &bpf_prog_fops;
63 fops = &bpf_link_fops;
69 if (file->f_op != fops)
73 e.id = get_obj_id(file->private_data, obj_type);
74 bpf_probe_read_kernel(&e.comm, sizeof(e.comm),
75 task->group_leader->comm);
76 bpf_seq_write(ctx->meta->seq, &e, sizeof(e));
81 char LICENSE[] SEC("license") = "Dual BSD/GPL";