Hi! > + if (system(cmd_buffer) != 0) > + tst_res(TPASS, "mmap() functionality successful"); > + else > + tst_res(TFAIL, "mmap() functionality failed"); This is quite ugly. Can we please instead for a child process and run a function that reads the file with read() and checks the data? -- Cyril Hrubis chrubis@suse.cz