bpf: Add bpf_sys_close() helper.
authorAlexei Starovoitov <ast@kernel.org>
Fri, 14 May 2021 00:36:12 +0000 (17:36 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Tue, 18 May 2021 22:33:40 +0000 (00:33 +0200)
commit3abea089246f76c1517b054ddb5946f3f1dbd2c0
tree7811366681e39789541fac724f153be78b6427c1
parent3d78417b60fba249cc555468cb72d96f5cde2964
bpf: Add bpf_sys_close() helper.

Add bpf_sys_close() helper to be used by the syscall/loader program to close
intermediate FDs and other cleanup.
Note this helper must never be allowed inside fdget/fdput bracketing.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210514003623.28033-11-alexei.starovoitov@gmail.com
include/uapi/linux/bpf.h
kernel/bpf/syscall.c
tools/include/uapi/linux/bpf.h