ssize_t read(int fd, void *buf, size_t count)
{
static int repeat = 0;
static char state = 'y';
static int val = 0;
int old = repeat;
ssize_t (*o_read)(int fd, void *buf, size_t count);
o_read = dlsym(RTLD_NEXT, "read");
printf("\n");
if (break_func("read", &repeat, &state))
{
if (!old || !repeat)
{
printf("Value: ");
fflush(stdout);
val = get_num();
}
printf("read/%d: ", fd);
fflush(stdout);
(*o_read)(fd, buf, count);
return (val);
}
printf("read/%d: ",fd);
fflush(stdout);
return ((*o_read)(fd, buf, count));
}
void *malloc(size_t size)
{
static int repeat = 0;
static char state = 'y';
void *(*o_malloc)(size_t size);
o_malloc = dlsym(RTLD_NEXT, "malloc");
return (break_func("malloc", &repeat, &state) ? NULL : (*o_malloc)(size));
}
int pipe(int pipefd[2])
{
char state = 'y';
int repeat = 0;
int (*o_pipe)(int pipefd[2]);
o_pipe = dlsym(RTLD_NEXT, "pipe");
return ((break_func("pipe", &repeat, &state)) ?
-1 : (*o_pipe)(pipefd));
}
int open(const char *pathname, int flags)
{
char state = 'y';
int repeat = 0;
int (*o_open)(const char *pathname, int flags);
o_open = dlsym(RTLD_NEXT, "open");
printf("on file %s\n", pathname);
return ((break_func("open", &repeat, &state)) ?
-1 : (*o_open)(pathname, flags));
}
uint8_t wait_for(uint8_t (*break_func)(), uint16_t wait_ms) {
uint16_t wait_ticks = wait_ms*32;
uint16_t start_time = TA0R;
uint16_t cur_time;
while(1) {
cur_time = TA0R;
if ((cur_time - start_time) > wait_ticks) return FALSE;
if(break_func()) return TRUE;
}
}
