netdev - [PATCH 2/2] tools, bpf_asm: exit non-zero on errors.

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Message-Id: <edb7c1985e446f6dd4ad875f39605bb2968d9920.1614134213.git.ian@zenhack.net>
Date:   Tue, 23 Feb 2021 21:24:00 -0500
From:   Ian Denhardt <ian@...hack.net>
To:     ast@...nel.org, daniel@...earbox.net, bpf@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH 2/2] tools, bpf_asm: exit non-zero on errors.

...so callers can correctly detect failure.
---
 tools/bpf/bpf_exp.y | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/bpf/bpf_exp.y b/tools/bpf/bpf_exp.y
index 8d03e5245da5..dfb7254a24e8 100644
--- a/tools/bpf/bpf_exp.y
+++ b/tools/bpf/bpf_exp.y
@@ -185,13 +185,13 @@ ldx
 	| OP_LDXB number '*' '(' '[' number ']' '&' number ')' {
 		if ($2 != 4 || $9 != 0xf) {
 			fprintf(stderr, "ldxb offset not supported!\n");
-			exit(0);
+			exit(1);
 		} else {
 			bpf_set_curr_instr(BPF_LDX | BPF_MSH | BPF_B, 0, 0, $6); } }
 	| OP_LDX number '*' '(' '[' number ']' '&' number ')' {
 		if ($2 != 4 || $9 != 0xf) {
 			fprintf(stderr, "ldxb offset not supported!\n");
-			exit(0);
+			exit(1);
 		} else {
 			bpf_set_curr_instr(BPF_LDX | BPF_MSH | BPF_B, 0, 0, $6); } }
 	;
@@ -472,7 +472,7 @@ static void bpf_assert_max(void)
 {
 	if (curr_instr >= BPF_MAXINSNS) {
 		fprintf(stderr, "only max %u insns allowed!\n", BPF_MAXINSNS);
-		exit(0);
+		exit(1);
 	}
 }
 
@@ -522,7 +522,7 @@ static int bpf_find_insns_offset(const char *label)
 
 	if (ret == -ENOENT) {
 		fprintf(stderr, "no such label \'%s\'!\n", label);
-		exit(0);
+		exit(1);
 	}
 
 	return ret;
-- 
2.30.1