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author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-01-20 23:58:44 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-21 02:09:18 +0100 |
commit | 60b2e8f4f71a21b96306a8a3ea4dd345ea3bfb46 (patch) | |
tree | c745e6c22f3264ea48489f91e20277ef2df4bcd3 /lib/test-hexdump.c | |
parent | drivers/firmware/broadcom/bcm47xx_nvram.c: use __ioread32_copy() instead of o... (diff) | |
download | linux-60b2e8f4f71a21b96306a8a3ea4dd345ea3bfb46.tar.xz linux-60b2e8f4f71a21b96306a8a3ea4dd345ea3bfb46.zip |
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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/test-hexdump.c')
-rw-r--r-- | lib/test-hexdump.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/lib/test-hexdump.c b/lib/test-hexdump.c deleted file mode 100644 index 5241df36eedf..000000000000 --- 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); - - return -EINVAL; -} -module_init(test_hexdump_init); -MODULE_LICENSE("Dual BSD/GPL"); |