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From 35e96e07c956a501cb8a12f5b873db173bb09179 Mon Sep 17 00:00:00 2001
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From: Ming-Hung Tsai <mtsai@redhat.com>
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Date: Wed, 2 Jun 2021 11:39:01 +0800
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Subject: [PATCH 06/10] [thin_metadata_size] Fix potential string overflow
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---
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thin-provisioning/thin_metadata_size.cc | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/thin-provisioning/thin_metadata_size.cc b/thin-provisioning/thin_metadata_size.cc
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index b6a5718..f14696c 100644
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--- a/thin-provisioning/thin_metadata_size.cc
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+++ b/thin-provisioning/thin_metadata_size.cc
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@@ -192,9 +192,13 @@ static void printf_aligned(struct global *g, char const *a, char const *b, char
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{
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char buf[80];
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- strcpy(buf, b);
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- if (units)
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- strcat(buf, mandatory ? "{" :"["), strcat(buf, g->unit.chars), strcat(buf, mandatory ? "}" : "]");
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+ if (units) {
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+ char left_bracket = mandatory ? '{' : '[';
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+ char right_bracket = mandatory ? '}' : ']';
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+ snprintf(buf, 80, "%s%c%s%c", b, left_bracket, g->unit.chars, right_bracket);
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+ } else {
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+ snprintf(buf, 80, "%s", b);
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+ }
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printf("\t%-4s%-44s%s\n", a, buf, c);
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}
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--
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1.8.3.1
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