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authorAlexei Starovoitov <ast@kernel.org>2021-05-14 03:36:12 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2021-05-19 01:33:40 +0300
commit3abea089246f76c1517b054ddb5946f3f1dbd2c0 (patch)
tree7811366681e39789541fac724f153be78b6427c1 /tools/include/uapi/linux/bpf.h
parent3d78417b60fba249cc555468cb72d96f5cde2964 (diff)
downloadlinux-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/linux/bpf.h')
-rw-r--r--tools/include/uapi/linux/bpf.h7
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