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| author | Alexei Starovoitov <ast@kernel.org> | 2021-05-13 17:36:12 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-05-19 00:33:40 +0200 |
| commit | 3abea089246f76c1517b054ddb5946f3f1dbd2c0 (patch) | |
| tree | 7811366681e39789541fac724f153be78b6427c1 /tools/include/uapi | |
| parent | 3d78417b60fba249cc555468cb72d96f5cde2964 (diff) | |
| download | linux-3abea089246f76c1517b054ddb5946f3f1dbd2c0.tar.gz linux-3abea089246f76c1517b054ddb5946f3f1dbd2c0.tar.xz | |
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
Diffstat (limited to 'tools/include/uapi')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 3cc07351c1cf..4cd9a0181f27 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -4754,6 +4754,12 @@ union bpf_attr { * Find BTF type with given name and kind in vmlinux BTF or in module's BTFs. * Return * Returns btf_id and btf_obj_fd in lower and upper 32 bits. + * + * long bpf_sys_close(u32 fd) + * Description + * Execute close syscall for given FD. + * Return + * A syscall result. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -4924,6 +4930,7 @@ union bpf_attr { FN(snprintf), \ FN(sys_bpf), \ FN(btf_find_by_name_kind), \ + FN(sys_close), \ /* */ /* integer value in 'imm' field of BPF_CALL instruction selects which helper |