[PATCH bpf-next 0/2] Add kfunc for doing pid -> task cwd

[Rong Tao]

In some application like bpftrace [1], need to get the cwd from the pid.
This patch provides a new kfunc that can get the cwd of the process from
the pid.

[1] https://github.com/bpftrace/bpftrace/issues/3314

Rong Tao (2):
  bpf: Add bpf_task_cwd_from_pid() kfunc
  selftests/bpf: Add selftests for bpf_task_cwd_from_pid()

 kernel/bpf/helpers.c                          | 45 ++++++++++++++++++
 .../selftests/bpf/prog_tests/task_kfunc.c     |  3 ++
 .../selftests/bpf/progs/task_kfunc_common.h   |  1 +
 .../selftests/bpf/progs/task_kfunc_success.c  | 47 +++++++++++++++++++
 4 files changed, 96 insertions(+)

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2.49.0