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From 2f7ce3bd875000149a0868b0652d40406c534f8b Mon Sep 17 00:00:00 2001
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From: Dave Reisner <dreisner@archlinux.org>
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Date: Sun, 6 Oct 2013 18:26:23 -0400
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Subject: [PATCH] shared/util: fix off-by-one error in tag_to_udev_node
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Triggered false negatives when encoding a string which needed every
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character to be escaped, e.g. "LABEL=/".
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---
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src/shared/util.c | 2 +-
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src/test/test-device-nodes.c | 4 +++-
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2 files changed, 4 insertions(+), 2 deletions(-)
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diff --git a/src/shared/util.c b/src/shared/util.c
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index 48adc83..6c88040 100644
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--- a/src/shared/util.c
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+++ b/src/shared/util.c
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@@ -3527,7 +3527,7 @@ static char *tag_to_udev_node(const char *tagvalue, const char *by) {
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if (u == NULL)
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return NULL;
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- enc_len = strlen(u) * 4;
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+ enc_len = strlen(u) * 4 + 1;
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t = new(char, enc_len);
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if (t == NULL)
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return NULL;
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diff --git a/src/test/test-device-nodes.c b/src/test/test-device-nodes.c
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index 2f3dedb..59ba4be 100644
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--- a/src/test/test-device-nodes.c
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+++ b/src/test/test-device-nodes.c
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@@ -26,7 +26,7 @@
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/* helpers for test_encode_devnode_name */
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static char *do_encode_string(const char *in) {
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- size_t out_len = strlen(in) * 4;
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+ size_t out_len = strlen(in) * 4 + 1;
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char *out = malloc(out_len);
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assert_se(out);
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@@ -46,6 +46,8 @@ static void test_encode_devnode_name(void) {
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assert_se(expect_encoded_as("pinkiepie", "pinkiepie"));
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assert_se(expect_encoded_as("valíd\\ųtf8", "valíd\\x5cųtf8"));
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assert_se(expect_encoded_as("s/ash/ng", "s\\x2fash\\x2fng"));
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+ assert_se(expect_encoded_as("/", "\\x2f"));
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+ assert_se(expect_encoded_as("!", "\\x21"));
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}
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int main(int argc, char *argv[]) {
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