#include #include #include #include "utils.h" #define SIZE 256 #define ITERATIONS 10000 int test_memcmp(const void *s1, const void *s2, size_t n); /* test all offsets and lengths */ static void test_one(char *s1, char *s2) { unsigned long offset, size; for (offset = 0; offset < SIZE; offset++) { for (size = 0; size < (SIZE-offset); size++) { int x, y; unsigned long i; y = memcmp(s1+offset, s2+offset, size); x = test_memcmp(s1+offset, s2+offset, size); if (((x ^ y) < 0) && /* Trick to compare sign */ ((x | y) != 0)) { /* check for zero */ printf("memcmp returned %d, should have returned %d (offset %ld size %ld)\n", x, y, offset, size); for (i = offset; i < offset+size; i++) printf("%02x ", s1[i]); printf("\n"); for (i = offset; i < offset+size; i++) printf("%02x ", s2[i]); printf("\n"); abort(); } } } } static int testcase(void) { char *s1; char *s2; unsigned long i; s1 = memalign(128, SIZE); if (!s1) { perror("memalign"); exit(1); } s2 = memalign(128, SIZE); if (!s2) { perror("memalign"); exit(1); } srandom(1); for (i = 0; i < ITERATIONS; i++) { unsigned long j; unsigned long change; for (j = 0; j < SIZE; j++) s1[j] = random(); memcpy(s2, s1, SIZE); /* change one byte */ change = random() % SIZE; s2[change] = random() & 0xff; test_one(s1, s2); } srandom(1); for (i = 0; i < ITERATIONS; i++) { unsigned long j; unsigned long change; for (j = 0; j < SIZE; j++) s1[j] = random(); memcpy(s2, s1, SIZE); /* change multiple bytes, 1/8 of total */ for (j = 0; j < SIZE / 8; j++) { change = random() % SIZE; s2[change] = random() & 0xff; } test_one(s1, s2); } return 0; } int main(void) { return test_harness(testcase, "memcmp"); } ux/net-next.git/tree/include/net/sctp/structs.h?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>treecommitdiff
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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-03 22:19:15 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-03 22:19:15 +0100
commit424414947da3dd5cb0d60e4f299f7c51e472ae77 (patch)
treea4067480c4256c80ae8f8438a3e4bb88e32050bc /include/net/sctp/structs.h
parenta3683e0c1410c5c8136a7a93b0336ce88d3b893a (diff)
parentd07830db1bdb254e4b50d366010b219286b8c937 (diff)
Merge tag 'usb-serial-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes: USB-serial fixes for v4.10-rc7 One more device ID for pl2303. Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'include/net/sctp/structs.h')