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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-01-20 14:58:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-20 17:09:18 -0800
commit3db4a987180acfba3bc117575bfedb81e055778c (patch)
treef4d7d5d14fa6833786e6091b4b48381d33250173
parent87977ca6bcd051b8bd20adff0a023548ff25902c (diff)
test_hexdump: define FILL_CHAR constant
Define a character to fill the test buffers. Though the character should be printable since it's used when errors are reported. It should neither be from hex digit [a-fA-F0-9] dictionary nor space. It is recommended not to use one which is present in ASCII part of the test data. Later on we might switch to unprintable character to make test case more robust. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--lib/test_hexdump.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index ed7c6a704f34..1ecdb97b370c 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -42,6 +42,8 @@ static const char * const test_data_8_le[] __initconst = {
"e9ac0f9cad319ca6", "0cafb1439919d14c",
};
+#define FILL_CHAR '#'
+
static void __init test_hexdump_prepare_test(size_t len, int rowsize,
int groupsize, char *test,
size_t testlen, bool ascii)
@@ -70,7 +72,7 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize,
else
result = test_data_1_le;
- memset(test, ' ', testlen);
+ memset(test, FILL_CHAR, testlen);
/* hex dump */
p = test;
@@ -79,14 +81,19 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize,
size_t amount = strlen(q);
strncpy(p, q, amount);
- p += amount + 1;
+ p += amount;
+
+ *p++ = ' ';
}
if (i)
p--;
/* ASCII part */
if (ascii) {
- p = test + rs * 2 + rs / gs + 1;
+ do {
+ *p++ = ' ';
+ } while (p < test + rs * 2 + rs / gs + 1);
+
strncpy(p, data_a, l);
p += l;
}
@@ -134,7 +141,7 @@ static void __init test_hexdump_overflow(bool ascii)
bool a;
int e, r;
- memset(buf, ' ', sizeof(buf));
+ memset(buf, FILL_CHAR, sizeof(buf));
r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, l, ascii);
@@ -145,14 +152,14 @@ static void __init test_hexdump_overflow(bool ascii)
buf[e + 2] = '\0';
if (!l) {
- a = r == e && buf[0] == ' ';
+ a = r == e && buf[0] == FILL_CHAR;
} 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] == ' ';
+ a = r == e && buf[l - 1] == '\0' && buf[l - 2] == FILL_CHAR;
else
a = r == e && buf[50] == '\0' && buf[49] == '.';
} else {