+ test_hexdump-rename-to-test_hexdump.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: test_hexdump: rename to test_hexdump
has been added to the -mm tree.  Its filename is
     test_hexdump-rename-to-test_hexdump.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/test_hexdump-rename-to-test_hexdump.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/test_hexdump-rename-to-test_hexdump.patch

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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: test_hexdump: rename to test_hexdump

The test suite currently doesn't cover many corner cases when
hex_dump_to_buffer() runs into overflow.  Refactor and amend test suite to
cover most of the cases.


This patch (of 9):

Just to follow the scheme that most of the test modules are using.

There is no fuctional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/Makefile       |    2 
 lib/test-hexdump.c |  180 +++++++++++++++++++++++++++++++++++++++++++
 lib/test_hexdump.c |  180 -------------------------------------------
 3 files changed, 181 insertions(+), 181 deletions(-)

diff -puN lib/Makefile~test_hexdump-rename-to-test_hexdump lib/Makefile
--- a/lib/Makefile~test_hexdump-rename-to-test_hexdump
+++ a/lib/Makefile
@@ -31,7 +31,7 @@ obj-y += bcd.o div64.o sort.o parser.o h
 obj-y += string_helpers.o
 obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
 obj-y += hexdump.o
-obj-$(CONFIG_TEST_HEXDUMP) += test-hexdump.o
+obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
 obj-y += kstrtox.o
 obj-$(CONFIG_TEST_BPF) += test_bpf.o
 obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
diff -puN /dev/null lib/test-hexdump.c
--- /dev/null
+++ a/lib/test-hexdump.c
@@ -0,0 +1,180 @@
+/*
+ * Test cases for lib/hexdump.c module.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/string.h>
+
+static const unsigned char data_b[] = {
+	'\xbe', '\x32', '\xdb', '\x7b', '\x0a', '\x18', '\x93', '\xb2',	/* 00 - 07 */
+	'\x70', '\xba', '\xc4', '\x24', '\x7d', '\x83', '\x34', '\x9b',	/* 08 - 0f */
+	'\xa6', '\x9c', '\x31', '\xad', '\x9c', '\x0f', '\xac', '\xe9',	/* 10 - 17 */
+	'\x4c', '\xd1', '\x19', '\x99', '\x43', '\xb1', '\xaf', '\x0c',	/* 18 - 1f */
+};
+
+static const unsigned char data_a[] = ".2.{....p..$}.4...1.....L...C...";
+
+static const char * const test_data_1_le[] __initconst = {
+	"be", "32", "db", "7b", "0a", "18", "93", "b2",
+	"70", "ba", "c4", "24", "7d", "83", "34", "9b",
+	"a6", "9c", "31", "ad", "9c", "0f", "ac", "e9",
+	"4c", "d1", "19", "99", "43", "b1", "af", "0c",
+};
+
+static const char * const test_data_2_le[] __initconst = {
+	"32be", "7bdb", "180a", "b293",
+	"ba70", "24c4", "837d", "9b34",
+	"9ca6", "ad31", "0f9c", "e9ac",
+	"d14c", "9919", "b143", "0caf",
+};
+
+static const char * const test_data_4_le[] __initconst = {
+	"7bdb32be", "b293180a", "24c4ba70", "9b34837d",
+	"ad319ca6", "e9ac0f9c", "9919d14c", "0cafb143",
+};
+
+static const char * const test_data_8_le[] __initconst = {
+	"b293180a7bdb32be", "9b34837d24c4ba70",
+	"e9ac0f9cad319ca6", "0cafb1439919d14c",
+};
+
+static void __init test_hexdump(size_t len, int rowsize, int groupsize,
+				bool ascii)
+{
+	char test[32 * 3 + 2 + 32 + 1];
+	char real[32 * 3 + 2 + 32 + 1];
+	char *p;
+	const char * const *result;
+	size_t l = len;
+	int gs = groupsize, rs = rowsize;
+	unsigned int i;
+
+	hex_dump_to_buffer(data_b, l, rs, gs, real, sizeof(real), ascii);
+
+	if (rs != 16 && rs != 32)
+		rs = 16;
+
+	if (l > rs)
+		l = rs;
+
+	if (!is_power_of_2(gs) || gs > 8 || (len % gs != 0))
+		gs = 1;
+
+	if (gs == 8)
+		result = test_data_8_le;
+	else if (gs == 4)
+		result = test_data_4_le;
+	else if (gs == 2)
+		result = test_data_2_le;
+	else
+		result = test_data_1_le;
+
+	memset(test, ' ', sizeof(test));
+
+	/* hex dump */
+	p = test;
+	for (i = 0; i < l / gs; i++) {
+		const char *q = *result++;
+		size_t amount = strlen(q);
+
+		strncpy(p, q, amount);
+		p += amount + 1;
+	}
+	if (i)
+		p--;
+
+	/* ASCII part */
+	if (ascii) {
+		p = test + rs * 2 + rs / gs + 1;
+		strncpy(p, data_a, l);
+		p += l;
+	}
+
+	*p = '\0';
+
+	if (strcmp(test, real)) {
+		pr_err("Len: %zu row: %d group: %d\n", len, rowsize, groupsize);
+		pr_err("Result: '%s'\n", real);
+		pr_err("Expect: '%s'\n", test);
+	}
+}
+
+static void __init test_hexdump_set(int rowsize, bool ascii)
+{
+	size_t d = min_t(size_t, sizeof(data_b), rowsize);
+	size_t len = get_random_int() % d + 1;
+
+	test_hexdump(len, rowsize, 4, ascii);
+	test_hexdump(len, rowsize, 2, ascii);
+	test_hexdump(len, rowsize, 8, ascii);
+	test_hexdump(len, rowsize, 1, ascii);
+}
+
+static void __init test_hexdump_overflow(bool ascii)
+{
+	char buf[56];
+	const char *t = test_data_1_le[0];
+	size_t l = get_random_int() % sizeof(buf);
+	bool a;
+	int e, r;
+
+	memset(buf, ' ', sizeof(buf));
+
+	r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, l, ascii);
+
+	if (ascii)
+		e = 50;
+	else
+		e = 2;
+	buf[e + 2] = '\0';
+
+	if (!l) {
+		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] == '.';
+	} else {
+		a = r == e && buf[e] == '\0';
+	}
+
+	if (!a) {
+		pr_err("Len: %zu rc: %u strlen: %zu\n", l, r, strlen(buf));
+		pr_err("Result: '%s'\n", buf);
+	}
+}
+
+static int __init test_hexdump_init(void)
+{
+	unsigned int i;
+	int rowsize;
+
+	pr_info("Running tests...\n");
+
+	rowsize = (get_random_int() % 2 + 1) * 16;
+	for (i = 0; i < 16; i++)
+		test_hexdump_set(rowsize, false);
+
+	rowsize = (get_random_int() % 2 + 1) * 16;
+	for (i = 0; i < 16; i++)
+		test_hexdump_set(rowsize, true);
+
+	for (i = 0; i < 16; i++)
+		test_hexdump_overflow(false);
+
+	for (i = 0; i < 16; i++)
+		test_hexdump_overflow(true);
+
+	return -EINVAL;
+}
+module_init(test_hexdump_init);
+MODULE_LICENSE("Dual BSD/GPL");
diff -puN lib/test_hexdump.c~test_hexdump-rename-to-test_hexdump /dev/null
--- a/lib/test_hexdump.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * Test cases for lib/hexdump.c module.
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/string.h>
-
-static const unsigned char data_b[] = {
-	'\xbe', '\x32', '\xdb', '\x7b', '\x0a', '\x18', '\x93', '\xb2',	/* 00 - 07 */
-	'\x70', '\xba', '\xc4', '\x24', '\x7d', '\x83', '\x34', '\x9b',	/* 08 - 0f */
-	'\xa6', '\x9c', '\x31', '\xad', '\x9c', '\x0f', '\xac', '\xe9',	/* 10 - 17 */
-	'\x4c', '\xd1', '\x19', '\x99', '\x43', '\xb1', '\xaf', '\x0c',	/* 18 - 1f */
-};
-
-static const unsigned char data_a[] = ".2.{....p..$}.4...1.....L...C...";
-
-static const char * const test_data_1_le[] __initconst = {
-	"be", "32", "db", "7b", "0a", "18", "93", "b2",
-	"70", "ba", "c4", "24", "7d", "83", "34", "9b",
-	"a6", "9c", "31", "ad", "9c", "0f", "ac", "e9",
-	"4c", "d1", "19", "99", "43", "b1", "af", "0c",
-};
-
-static const char * const test_data_2_le[] __initconst = {
-	"32be", "7bdb", "180a", "b293",
-	"ba70", "24c4", "837d", "9b34",
-	"9ca6", "ad31", "0f9c", "e9ac",
-	"d14c", "9919", "b143", "0caf",
-};
-
-static const char * const test_data_4_le[] __initconst = {
-	"7bdb32be", "b293180a", "24c4ba70", "9b34837d",
-	"ad319ca6", "e9ac0f9c", "9919d14c", "0cafb143",
-};
-
-static const char * const test_data_8_le[] __initconst = {
-	"b293180a7bdb32be", "9b34837d24c4ba70",
-	"e9ac0f9cad319ca6", "0cafb1439919d14c",
-};
-
-static void __init test_hexdump(size_t len, int rowsize, int groupsize,
-				bool ascii)
-{
-	char test[32 * 3 + 2 + 32 + 1];
-	char real[32 * 3 + 2 + 32 + 1];
-	char *p;
-	const char * const *result;
-	size_t l = len;
-	int gs = groupsize, rs = rowsize;
-	unsigned int i;
-
-	hex_dump_to_buffer(data_b, l, rs, gs, real, sizeof(real), ascii);
-
-	if (rs != 16 && rs != 32)
-		rs = 16;
-
-	if (l > rs)
-		l = rs;
-
-	if (!is_power_of_2(gs) || gs > 8 || (len % gs != 0))
-		gs = 1;
-
-	if (gs == 8)
-		result = test_data_8_le;
-	else if (gs == 4)
-		result = test_data_4_le;
-	else if (gs == 2)
-		result = test_data_2_le;
-	else
-		result = test_data_1_le;
-
-	memset(test, ' ', sizeof(test));
-
-	/* hex dump */
-	p = test;
-	for (i = 0; i < l / gs; i++) {
-		const char *q = *result++;
-		size_t amount = strlen(q);
-
-		strncpy(p, q, amount);
-		p += amount + 1;
-	}
-	if (i)
-		p--;
-
-	/* ASCII part */
-	if (ascii) {
-		p = test + rs * 2 + rs / gs + 1;
-		strncpy(p, data_a, l);
-		p += l;
-	}
-
-	*p = '\0';
-
-	if (strcmp(test, real)) {
-		pr_err("Len: %zu row: %d group: %d\n", len, rowsize, groupsize);
-		pr_err("Result: '%s'\n", real);
-		pr_err("Expect: '%s'\n", test);
-	}
-}
-
-static void __init test_hexdump_set(int rowsize, bool ascii)
-{
-	size_t d = min_t(size_t, sizeof(data_b), rowsize);
-	size_t len = get_random_int() % d + 1;
-
-	test_hexdump(len, rowsize, 4, ascii);
-	test_hexdump(len, rowsize, 2, ascii);
-	test_hexdump(len, rowsize, 8, ascii);
-	test_hexdump(len, rowsize, 1, ascii);
-}
-
-static void __init test_hexdump_overflow(bool ascii)
-{
-	char buf[56];
-	const char *t = test_data_1_le[0];
-	size_t l = get_random_int() % sizeof(buf);
-	bool a;
-	int e, r;
-
-	memset(buf, ' ', sizeof(buf));
-
-	r = hex_dump_to_buffer(data_b, 1, 16, 1, buf, l, ascii);
-
-	if (ascii)
-		e = 50;
-	else
-		e = 2;
-	buf[e + 2] = '\0';
-
-	if (!l) {
-		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] == '.';
-	} else {
-		a = r == e && buf[e] == '\0';
-	}
-
-	if (!a) {
-		pr_err("Len: %zu rc: %u strlen: %zu\n", l, r, strlen(buf));
-		pr_err("Result: '%s'\n", buf);
-	}
-}
-
-static int __init test_hexdump_init(void)
-{
-	unsigned int i;
-	int rowsize;
-
-	pr_info("Running tests...\n");
-
-	rowsize = (get_random_int() % 2 + 1) * 16;
-	for (i = 0; i < 16; i++)
-		test_hexdump_set(rowsize, false);
-
-	rowsize = (get_random_int() % 2 + 1) * 16;
-	for (i = 0; i < 16; i++)
-		test_hexdump_set(rowsize, true);
-
-	for (i = 0; i < 16; i++)
-		test_hexdump_overflow(false);
-
-	for (i = 0; i < 16; i++)
-		test_hexdump_overflow(true);