-
-/* socket management structure */
-struct sock_list {
- int s;
- struct sockaddr_sw addr;
- struct sock_list *next;
- struct sock_list *prev;
-};
-
-static struct sock_list sock_list_head = {
- .next = &sock_list_head,
- .prev = &sock_list_head
-};
-
-/*
- * Add new socket to list. Called by sw_socket "syscall".
- */
-
-static struct sock_list *list_add_socket(int s)
-{
- struct sock_list *ptr = malloc(sizeof(*ptr));
- if (ptr == NULL)
- return NULL;
-
- ptr->next = &sock_list_head;
- ptr->prev = sock_list_head.prev;
- sock_list_head.prev->next = ptr;
- sock_list_head.prev = ptr;
-
- return ptr;
-}
-
-/*
- * Bind socket to given address. Called by sw_bind "syscall".
- */
-
-static struct sock_list *list_update_socket_address(int s, struct sockaddr_sw *addr)
-{
- struct sock_list *ptr;
-
- for (ptr = sock_list_head.next; ptr != &sock_list_head; ptr = ptr->next)
- if (ptr->s == s) {
- memcpy(&ptr->addr, addr, sizeof(ptr->addr));
- return ptr;
- }
-
- return NULL;
-}
-
-/*
- * Get list element containing socket s. Called by sw_send* "syscalls".
- */
-
-static struct sock_list *list_elem_from_socket(int s)
-{
- struct sock_list *ptr;
-
- for (ptr = sock_list_head.next; ptr != &sock_list_head; ptr = ptr->next)
- if (ptr->s == s) {
- return ptr;
- }
-
- return NULL;
-}
-
-/*
- * Remove socket from list. Called by sw_close "syscall".
- */
-
-static struct sock_list *list_unlink_socket(int s)
-{
- struct sock_list *ptr;
-
- for (ptr = sock_list_head.next; ptr != &sock_list_head; ptr = ptr->next)
- if (ptr->s == s) {
- ptr->next->prev = ptr->prev;
- ptr->prev->next = ptr->next;
- ptr->next = ptr;
- ptr->prev = ptr;
- return ptr;
- }
-
- return NULL;
-}