The patch titled
Subject: test_hexdump: replace magic numbers by their meaning
has been added to the -mm tree. Its filename is
test_hexdump-replace-magic-numbers-by-their-meaning.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/test_hexdump-replace-magic-numbers-by-their-meaning.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/test_hexdump-replace-magic-numbers-by-their-meaning.patch
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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Subject: test_hexdump: replace magic numbers by their meaning
The magic numbers of the length are converted to their actual meaning,
such as end of the buffer with and without ASCII part.
We don't touch the rest of the magic constants that will be removed in the
following commits.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_hexdump.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff -puN lib/test_hexdump.c~test_hexdump-replace-magic-numbers-by-their-meaning lib/test_hexdump.c
--- a/lib/test_hexdump.c~test_hexdump-replace-magic-numbers-by-their-meaning
+++ a/lib/test_hexdump.c
@@ -137,17 +137,26 @@ static void __init test_hexdump_overflow
{
char buf[TEST_HEXDUMP_BUF_SIZE];
const char *t = test_data_1_le[0];
+ size_t len = 1;
+ int rs = 16, gs = 1;
+ int ae, he, e, r;
bool a;
- int e, r;
memset(buf, FILL_CHAR, sizeof(buf));
- r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, buflen, ascii);
+ r = hex_dump_to_buffer(data_b, len, rs, gs, buf, buflen, ascii);
+
+ /*
+ * Caller must provide the data length multiple of groupsize. The
+ * calculations below are made with that assumption in mind.
+ */
+ ae = rs * 2 /* hex */ + rs / gs /* spaces */ + 1 /* space */ + len /* ascii */;
+ he = (gs * 2 /* hex */ + 1 /* space */) * len / gs - 1 /* no trailing space */;
if (ascii)
- e = 50;
+ e = ae;
else
- e = 2;
+ e = he;
buf[e + 2] = '\0';
if (!buflen) {
_
Patches currently in -mm which might be from andriy.shevchenko@xxxxxxxxxxxxxxx are
test_hexdump-rename-to-test_hexdump.patch
test_hexdump-introduce-test_hexdump_prepare_test-helper.patch
test_hexdump-define-fill_char-constant.patch
test_hexdump-go-through-all-possible-lengths-of-buffer.patch
test_hexdump-replace-magic-numbers-by-their-meaning.patch
test_hexdump-switch-to-memcmp.patch
test_hexdump-check-all-bytes-in-real-buffer.patch
test_hexdump-test-all-possible-group-sizes-for-overflow.patch
test_hexdump-print-statistics-at-the-end.patch
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