From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 17 Dec 2021 20:22:07 +0000 (-0800)
Subject: libbpf-tools: update exitsnoop for libbpf 1.0
X-Git-Tag: v0.24.0~33^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0a035be644cf818354f3faab25a74e005a66d954;p=platform%2Fupstream%2Fbcc.git

libbpf-tools: update exitsnoop for libbpf 1.0

Switch to libbpf 1.0 mode and adapt libbpf API usage accordingly.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---

diff --git a/libbpf-tools/exitsnoop.c b/libbpf-tools/exitsnoop.c
index 6556bb14..363513ab 100644
--- a/libbpf-tools/exitsnoop.c
+++ b/libbpf-tools/exitsnoop.c
@@ -140,7 +140,6 @@ int main(int argc, char **argv)
 		.parser = parse_arg,
 		.doc = argp_program_doc,
 	};
-	struct perf_buffer_opts pb_opts;
 	struct perf_buffer *pb = NULL;
 	struct exitsnoop_bpf *obj;
 	int err;
@@ -149,11 +148,7 @@ int main(int argc, char **argv)
 	if (err)
 		return err;
 
-	err = bump_memlock_rlimit();
-	if (err) {
-		warn("failed to increase rlimit: %d\n", err);
-		return 1;
-	}
+	libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
 
 	obj = exitsnoop_bpf__open();
 	if (!obj) {
@@ -177,11 +172,10 @@ int main(int argc, char **argv)
 		goto cleanup;
 	}
 
-	pb_opts.sample_cb = handle_event;
-	pb_opts.lost_cb = handle_lost_events;
-	pb = perf_buffer__new(bpf_map__fd(obj->maps.events), PERF_BUFFER_PAGES, &pb_opts);
-	err = libbpf_get_error(pb);
-	if (err) {
+	pb = perf_buffer__new(bpf_map__fd(obj->maps.events), PERF_BUFFER_PAGES,
+			      handle_event, handle_lost_events, NULL, NULL);
+	if (!pb) {
+		err = -errno;
 		warn("failed to open perf buffer: %d\n", err);
 		goto cleanup;
 	}
@@ -199,8 +193,8 @@ int main(int argc, char **argv)
 
 	while (!exiting) {
 		err = perf_buffer__poll(pb, PERF_POLL_TIMEOUT_MS);
-		if (err < 0 && errno != EINTR) {
-			warn("error polling perf buffer: %s\n", strerror(errno));
+		if (err < 0 && err != -EINTR) {
+			warn("error polling perf buffer: %s\n", strerror(-err));
 			goto cleanup;
 		}
 		/* reset err to return 0 if exiting */