bpf: Add task and task/file iterator targets

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Only the tasks belonging to "current" pid namespace
are enumerated.

For task/file target, the bpf program will have access to
  struct task_struct *task
  u32 fd
  struct file *file
where fd/file is an open file for the task.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200509175911.2476407-1-yhs@fb.com

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Yonghong Song 2020-05-09 10:59:11 -07:00 • committed by Alexei Starovoitov

parent 138d0be35b

commit eaaacd2391

2 changed files with 334 additions and 1 deletions

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2

kernel/bpf/Makefile

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333

kernel/bpf/task_iter.c

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