/* Loop over all child structs in the children list and free them */
static void free_children(struct tracy_ll *children)
{
struct tracy_child *tc;
struct tracy_ll_item *cur = children->head;
/* Walk over all items in the list */
while(cur) {
tc = cur->data;
/* Detach or kill */
if (tc->attached) {
fprintf(stderr, _b("Detaching from child %d")"\n", tc->pid);
PTRACE_CHECK_NORETURN(PTRACE_DETACH, tc->pid, NULL, NULL);
/* TODO: What can we do in case of failure? */
} else {
fprintf(stderr, _b("Killing child %d")"\n", tc->pid);
tracy_kill_child(tc);
}
/* Free data and fetch next item */
cur = cur->next;
}
return;
}
int hook_gettimeofday(struct tracy_event *e) {
struct timeval tv = {1700, 0};
int err;
if (e->child->pre_syscall) {
e->child->custom = (void*)e->args.a0;
} else {
if (e->child->custom) {
err = tracy_write_mem(e->child, (tracy_child_addr_t)e->child->custom,
(tracy_parent_addr_t)&tv, sizeof(struct timeval));
if (err < 0) {
fprintf(stderr, "tracy_write_mem returned %d\n", err);
tracy_kill_child(e->child);
}
}
}
return TRACY_HOOK_CONTINUE;
}
int hook_clock_gettime(struct tracy_event *e) {
struct timespec tp = {2000, 0};
int err;
if (e->child->pre_syscall) {
if (e->args.a0 == CLOCK_REALTIME || e->args.a0 == CLOCK_REALTIME_COARSE) {
e->child->custom = (void*)e->args.a1;
} else {
e->child->custom = NULL;
}
} else {
if (e->child->custom) {
err = tracy_write_mem(e->child, (tracy_child_addr_t)e->child->custom,
(tracy_parent_addr_t)&tp, sizeof(struct timespec));
if (err < 0) {
fprintf(stderr, "tracy_write_mem returned %d\n", err);
tracy_kill_child(e->child);
}
}
}
return TRACY_HOOK_CONTINUE;
}
