lib: new testcases for bitmap_parse{_user}

New version of bitmap_parse() is unified with bitmap_parse_list(),
and therefore:

- weakens rules on whitespaces and commas between hex chunks;

- in addition to

- allows passing UINT_MAX or any other big number as the length of input
  string instead of actual string length.

The patch covers the cases.

Link: http://lkml.kernel.org/r/20200102043031.30357-7-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Amritha Nambiar <amritha.nambiar@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: "Tobin C . Harding" <tobin@kernel.org>
Cc: Vineet Gupta <vineet.gupta1@synopsys.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index bde8ed8c0e79664f0ab06f5489510a45e8bb31d2..61ed71c1daba9776dff638e3f01034dfae7342ea 100644 (file)
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -415,14 +415,22 @@ static const unsigned long parse_test2[] __initconst = {
 };
 
 static const struct test_bitmap_parselist parse_tests[] __initconst = {
+       {0, "",                         &parse_test[0 * step], 32, 0},
+       {0, " ",                        &parse_test[0 * step], 32, 0},
        {0, "0",                        &parse_test[0 * step], 32, 0},
+       {0, "0\n",                      &parse_test[0 * step], 32, 0},
        {0, "1",                        &parse_test[1 * step], 32, 0},
        {0, "deadbeef",                 &parse_test[2 * step], 32, 0},
        {0, "1,0",                      &parse_test[3 * step], 33, 0},
+       {0, "deadbeef,\n,0,1",          &parse_test[2 * step], 96, 0},
 
        {0, "deadbeef,1,0",             &parse_test2[0 * 2 * step], 96, 0},
        {0, "baadf00d,deadbeef,1,0",    &parse_test2[1 * 2 * step], 128, 0},
        {0, "badf00d,deadbeef,1,0",     &parse_test2[2 * 2 * step], 124, 0},
+       {0, "badf00d,deadbeef,1,0",     &parse_test2[2 * 2 * step], 124, NO_LEN},
+       {0, "  badf00d,deadbeef,1,0  ", &parse_test2[2 * 2 * step], 124, 0},
+       {0, " , badf00d,deadbeef,1,0 , ",       &parse_test2[2 * 2 * step], 124, 0},
+       {0, " , badf00d, ,, ,,deadbeef,1,0 , ", &parse_test2[2 * 2 * step], 124, 0},
 
        {-EINVAL,    "goodfood,deadbeef,1,0",   NULL, 128, 0},
        {-EOVERFLOW, "3,0",                     NULL, 33, 0},