bool hook_remove(WHook *hk, WHookDummy *fn)
{
WHookItem *item=hook_find(hk, fn);
if(item!=NULL)
destroy_item(hk, item);
return (item!=NULL);
}
void *get_hooked_symbol(char *sym)
{
pthread_mutex_lock(&hook_mutex);
static int counter = 0;
int i;
hooks_install();
for (i=0; use_from_bionic[i]!=NULL; ++i) {
if (!strcmp(sym,use_from_bionic[i])) {
LOGD("from_bionic:%s",use_from_bionic[i]);
pthread_mutex_unlock(&hook_mutex);
return NULL;
}
}
void *rv = hook_find(sym);
if (rv != NULL) {
pthread_mutex_unlock(&hook_mutex);
return rv;
}
rv = hook_add_from_lib(sym, "librt.so");
if (rv != NULL) {
pthread_mutex_unlock(&hook_mutex);
return rv;
}
rv = hook_add_from_lib(sym, "libc.so.6");
if (rv != NULL) {
pthread_mutex_unlock(&hook_mutex);
return rv;
}
/*
* functions we want to come from bionic
* libsc-a3xx.so: fall back into bionic */
if (!strcmp(sym, "pthread_sigmask")
) {
pthread_mutex_unlock(&hook_mutex);
return NULL;
}
/* strstr includes symbols such as __pthread */
if (strstr(sym, "pthread_")) {
hybris_missing_symbols[counter]=strdup(sym);
pthread_mutex_unlock(&hook_mutex);
return (void*)counter++;
}
if (rv == NULL) {
LOGD("UNABLE TO FIND:%s",sym);
}
pthread_mutex_unlock(&hook_mutex);
return rv;
}
bool hook_add(WHook *hk, WHookDummy *fn)
{
WHookItem *item;
if(hook_find(hk, fn))
return FALSE;
item=create_item(hk);
if(item==NULL)
return FALSE;
item->fn=fn;
return TRUE;
}