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tools, bpf_asm: Exit non-zero on errors

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... so callers can correctly detect failure.

Signed-off-by: Ian Denhardt <ian@zenhack.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/b0bea780bc292f29e7b389dd062f20adc2a2d634.1614201868.git.ian@zenhack.net
This commit is contained in:
Ian Denhardt
2021-02-23 21:24:00 -05:00
committed by Daniel Borkmann
parent 04883a0799
commit 85e142cb42
1 changed files with 4 additions and 4 deletions
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8
tools/bpf/bpf_exp.y
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@@ -185,13 +185,13 @@ ldx
| OP_LDXB number '*' '(' '[' number ']' '&' number ')' { | OP_LDXB number '*' '(' '[' number ']' '&' number ')' {
if ($2 != 4 || $9 != 0xf) { if ($2 != 4 || $9 != 0xf) {
fprintf(stderr, "ldxb offset not supported!\n"); fprintf(stderr, "ldxb offset not supported!\n");
exit(0); exit(1);
} else { } else {
bpf_set_curr_instr(BPF_LDX | BPF_MSH | BPF_B, 0, 0, $6); } } bpf_set_curr_instr(BPF_LDX | BPF_MSH | BPF_B, 0, 0, $6); } }
| OP_LDX number '*' '(' '[' number ']' '&' number ')' { | OP_LDX number '*' '(' '[' number ']' '&' number ')' {
if ($2 != 4 || $9 != 0xf) { if ($2 != 4 || $9 != 0xf) {
fprintf(stderr, "ldxb offset not supported!\n"); fprintf(stderr, "ldxb offset not supported!\n");
exit(0); exit(1);
} else { } else {
bpf_set_curr_instr(BPF_LDX | BPF_MSH | BPF_B, 0, 0, $6); } } 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) { if (curr_instr >= BPF_MAXINSNS) {
fprintf(stderr, "only max %u insns allowed!\n", 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) { if (ret == -ENOENT) {
fprintf(stderr, "no such label \'%s\'!\n", label); fprintf(stderr, "no such label \'%s\'!\n", label);
exit(0); exit(1);
} }
return ret; return ret;