The patch titled
Subject: test_hexdump: check all bytes in real buffer
has been added to the -mm tree. Its filename is
test_hexdump-check-all-bytes-in-real-buffer.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/test_hexdump-check-all-bytes-in-real-buffer.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/test_hexdump-check-all-bytes-in-real-buffer.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Subject: test_hexdump: check all bytes in real buffer
After processing by hex_dump_to_buffer() check all the parts to be expected.
Part 1. The actual expected hex dump with or without ASCII part.
This is provided by plain strcmp() call including check for the
terminating NUL.
Part 2. Check if the buffer is dirty beyond needed.
We fill the buffer by ' ' (space) characters, so, we expect to have the
tail of buffer will be left untouched. Check all bytes in the tail of
the buffer.
Part 3. Return code should be as expected.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_hexdump.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff -puN lib/test_hexdump.c~test_hexdump-check-all-bytes-in-real-buffer lib/test_hexdump.c
--- a/lib/test_hexdump.c~test_hexdump-check-all-bytes-in-real-buffer
+++ a/lib/test_hexdump.c
@@ -128,10 +128,9 @@ static void __init test_hexdump_set(int
static void __init test_hexdump_overflow(size_t buflen, bool ascii)
{
+ char test[TEST_HEXDUMP_BUF_SIZE];
char buf[TEST_HEXDUMP_BUF_SIZE];
- const char *t = test_data_1_le[0];
size_t len = 1;
- size_t l = buflen;
int rs = 16, gs = 1;
int ae, he, e, r;
bool a;
@@ -147,26 +146,27 @@ static void __init test_hexdump_overflow
e = ae;
else
e = he;
- buf[e + 2] = '\0';
if (!buflen) {
- a = r == e && buf[0] == ' ';
- } else if (l < 3) {
- a = r == e && buf[0] == '\0';
- } else if (l < 4) {
- a = r == e && !strcmp(buf, t);
- } else if (ascii) {
- if (l < 51)
- a = r == e && buf[l - 1] == '\0' && buf[l - 2] == ' ';
- else
- a = r == e && buf[50] == '\0' && buf[49] == '.';
+ memset(test, ' ', sizeof(test));
+ test[sizeof(buf) - 1] = '\0';
+
+ a = r == e && !memchr_inv(buf, ' ', sizeof(buf));
} else {
- a = r == e && buf[e] == '\0';
+ int f = min_t(int, e + 1, buflen);
+
+ test_hexdump_prepare_test(len, rs, gs, test, sizeof(test), ascii);
+ test[f - 1] = '\0';
+
+ a = r == e && !memchr_inv(buf + f, ' ', sizeof(buf) - f) && !strcmp(buf, test);
}
+ buf[sizeof(buf) - 1] = '\0';
+
if (!a) {
- pr_err("Len: %zu rc: %u strlen: %zu\n", buflen, r, strlen(buf));
- pr_err("Result: '%s'\n", buf);
+ pr_err("Len: %zu buflen: %zu strlen: %zu\n", len, buflen, strlen(buf));
+ pr_err("Result: %d '%s'\n", r, buf);
+ pr_err("Expect: %d '%s'\n", e, test);
}
}
_
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-go-through-all-possible-lengths-of-buffer.patch
test_hexdump-replace-magic-numbers-by-their-meaning.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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