From 60f270753960291895cdd07d360c4e09c56c4596 Mon Sep 17 00:00:00 2001 From: Dave Marchevsky Date: Mon, 1 Nov 2021 15:43:54 -0700 Subject: [PATCH] bpftool: Migrate -1 err checks of libbpf fn calls Per [0], callers of libbpf functions with LIBBPF_STRICT_DIRECT_ERRS set should handle negative error codes of various values (e.g. -EINVAL). Migrate two callsites which were explicitly checking for -1 only to handle the new scheme. [0]: https://github.com/libbpf/libbpf/wiki/Libbpf-1.0-migration-guide#direct-error-code-returning-libbpf_strict_direct_errs Signed-off-by: Dave Marchevsky Signed-off-by: Andrii Nakryiko Acked-by: Quentin Monnet Link: https://lore.kernel.org/bpf/20211101224357.2651181-2-davemarchevsky@fb.com --- tools/bpf/bpftool/btf_dumper.c | 2 +- tools/bpf/bpftool/struct_ops.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c index 9c25286a5c737..6934e8634b94b 100644 --- a/tools/bpf/bpftool/btf_dumper.c +++ b/tools/bpf/bpftool/btf_dumper.c @@ -52,7 +52,7 @@ static int dump_prog_id_as_func_ptr(const struct btf_dumper *d, /* Get the bpf_prog's name. Obtain from func_info. */ prog_fd = bpf_prog_get_fd_by_id(prog_id); - if (prog_fd == -1) + if (prog_fd < 0) goto print; prog_info = bpf_program__get_prog_info_linear(prog_fd, diff --git a/tools/bpf/bpftool/struct_ops.c b/tools/bpf/bpftool/struct_ops.c index ab2d2290569a4..20f803dce2e4d 100644 --- a/tools/bpf/bpftool/struct_ops.c +++ b/tools/bpf/bpftool/struct_ops.c @@ -252,7 +252,7 @@ static struct res do_one_id(const char *id_str, work_func func, void *data, } fd = bpf_map_get_fd_by_id(id); - if (fd == -1) { + if (fd < 0) { p_err("can't get map by id (%lu): %s", id, strerror(errno)); res.nr_errs++; return res; -- 2.30.2