com32/lib/syslinux/setup_data.c

   1 #include <stdlib.h>
   2 #include <syslinux/linux.h>
   3 #include <syslinux/loadfile.h>
   4
   5 struct setup_data *setup_data_init(void)
   6 {
   7     struct setup_data *setup_data;
   8
   9     setup_data = zalloc(sizeof(*setup_data));
  10     if (!setup_data)
  11         return NULL;
  12
  13     setup_data->prev = setup_data->next = setup_data;
  14     return setup_data;
  15 }
  16
  17 int setup_data_add(struct setup_data *head, uint32_t type,
  18                    const void *data, size_t data_len)
  19 {
  20         struct setup_data *setup_data;
  21
  22         setup_data = zalloc(sizeof(*setup_data));
  23         if (!setup_data)
  24             return -1;
  25
  26         setup_data->data     = data;
  27         setup_data->hdr.len  = data_len;
  28         setup_data->hdr.type = type;
  29         setup_data->prev     = head->prev;
  30         setup_data->next     = head;
  31         head->prev->next     = setup_data;
  32         head->prev           = setup_data;
  33
  34         return 0;
  35 }
  36
  37 int setup_data_load(struct setup_data *head, uint32_t type,
  38                     const char *filename)
  39 {
  40         void *data;
  41         size_t len;
  42
  43         if (loadfile(filename, &data, &len))
  44                 return -1;
  45
  46         return setup_data_add(head, type, data, len);
  47 }