static void sanitise_execve(struct syscallrecord *rec)
{
unsigned long **argv, **envp;
/* we don't want to block if something tries to read from stdin */
fclose(stdin);
/* Fabricate argv */
argvcount = rand() % 32;
argv = gen_ptrs_to_crap(argvcount);
/* Fabricate envp */
envpcount = rand() % 32;
envp = gen_ptrs_to_crap(envpcount);
if (this_syscallname("execve") == FALSE) {
rec->a2 = (unsigned long) argv;
rec->a3 = (unsigned long) envp;
} else {
rec->a3 = (unsigned long) argv;
rec->a4 = (unsigned long) envp;
}
}
static void sanitise_sync_file_range(struct syscallrecord *rec)
{
long endbyte;
loff_t nbytes;
loff_t off;
retry:
off = rand64() & 0x0fffffffffffffffUL;
nbytes = rand64() & 0x0fffffffffffffffUL;
endbyte = off + nbytes;
if (endbyte < off)
goto retry;
if (off >= (0x100000000LL << PAGE_SHIFT))
goto retry;
if (this_syscallname("sync_file_range2") == FALSE) {
rec->a2 = off;
rec->a3 = nbytes;
} else {
rec->a3 = off;
rec->a4 = nbytes;
}
}
