From 02d3d6bed0414e85abecfd31220b0eaf5ea55aa5 Mon Sep 17 00:00:00 2001 From: Matt Mullins Date: Sat, 21 Sep 2013 17:24:01 +0000 Subject: [PATCH] Read random memory until something is nonzero. --- mmap_everything.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/mmap_everything.c b/mmap_everything.c index a1b4b77..ae1d529 100644 --- a/mmap_everything.c +++ b/mmap_everything.c @@ -45,9 +45,8 @@ int main() { } srand48(time(NULL)); - while (1) { - printf("Press enter to read a random byte of memory. (pid %d) >", pid); - while (getchar() != '\n'); + int *pi; + do { uint32_t lower = lrand48(); uint32_t upper = lrand48(); @@ -55,8 +54,8 @@ int main() { // align to integer, keep in "userspace" address space pvalue &= 0x00007FFFFFFFFFF0; - int *pi = (void*)(pvalue); + pi = (void*)(pvalue); printf("*%p = ", (void*)pi); printf("%x\n", *pi); - } + } while (*pi == 0); } -- 2.11.0