minix/lib/libmagicrt/magic_ds.c

   1 #include <minix/syslib.h>
   2 #include <minix/sysutil.h>
   3 #include <minix/com.h>
   4
   5 #include <minix/type.h>
   6 #include <minix/ds.h>
   7 #include "ds/store.h"
   8
   9 #include <magic_analysis.h>
  10 #include <st/state_transfer.h>
  11
  12 const char* sef_sf_typename_keys[] = { "dsi_u", NULL };
  13 #define dsi_u_idx 0
  14
  15 /*===========================================================================*
  16  *                         sef_cb_sf_transfer_dsi_u                          *
  17  *===========================================================================*/
  18 static int sef_cb_sf_transfer_dsi_u(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info) {
  19         static struct dsi_mem noxfer_dsi_mem_stub;
  20         static const struct _magic_type* _magic_dsi_mem_type = NULL;
  21         struct data_store* dsp;
  22         _magic_selement_t parent_selement;
  23         int ret = EGENERIC;
  24         VOLATILE int keep_stubs = (int)&noxfer_dsi_mem_stub;
  25         assert(keep_stubs);
  26
  27         if(magic_selement_get_parent(selement, &parent_selement) == NULL) {
  28                 ST_CB_PRINT(ST_CB_ERR, "sef_cb_sf_transfer_dsi_u: magic_selement_get_parent failed", selement, sel_analyzed, sel_stats, cb_info);
  29                 return EINVAL;
  30         }
  31         dsp = (struct data_store*) parent_selement.address;
  32         if(!(dsp->flags & DSF_IN_USE)) {
  33                 /* Skip when unused. */
  34                 return MAGIC_SENTRY_ANALYZE_SKIP_PATH;
  35         }
  36         switch(dsp->flags & DSF_MASK_TYPE) {
  37                 case DSF_TYPE_U32:
  38                 case DSF_TYPE_LABEL:
  39                         /* Identity transfer when no ptr is involved. */
  40                         ret = st_cb_transfer_identity(selement, sel_analyzed, sel_stats, cb_info);
  41                         break;
  42                 case DSF_TYPE_STR:
  43                 case DSF_TYPE_MEM:
  44                         /* Transfer as dsp->u.mem struct. */
  45                         if(!_magic_dsi_mem_type && !(_magic_dsi_mem_type = magic_type_lookup_by_name("dsi_mem"))) {
  46                                 ST_CB_PRINT(ST_CB_ERR, "sef_cb_sf_transfer_dsi_u: type dsi_mem not found", selement, sel_analyzed, sel_stats, cb_info);
  47                                 return ENOENT;
  48                         }
  49                         st_cb_selement_type_cast(_magic_dsi_mem_type, _magic_dsi_mem_type, selement, sel_analyzed, sel_stats, cb_info);
  50                         ret = st_cb_transfer_selement_generic(selement, sel_analyzed, sel_stats, cb_info);
  51                         break;
  52                 default:
  53                         /* Unknown? Report error. */
  54                         ST_CB_PRINT(ST_CB_ERR, "sef_cb_sf_transfer_dsi_u: bad flags", selement, sel_analyzed, sel_stats, cb_info);
  55                         ret = EFAULT;
  56                         break;
  57         }
  58         return ret;
  59 }
  60
  61 /*===========================================================================*
  62  *                       sef_cb_sf_transfer_typename                         *
  63  *===========================================================================*/
  64 static int sef_cb_sf_transfer_typename(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info) {
  65     const char *typename_key = ST_TYPE_NAME_KEY(selement->type);
  66         if(ST_TYPE_NAME_MATCH(sef_sf_typename_keys[dsi_u_idx],typename_key))
  67         {
  68                 return sef_cb_sf_transfer_dsi_u(selement, sel_analyzed, sel_stats, cb_info);
  69         }
  70
  71         return ST_CB_NOT_PROCESSED;
  72 }
  73
  74 /*===========================================================================*
  75  *                       _magic_ds_st_init                         *
  76  *===========================================================================*/
  77 void _magic_ds_st_init(void)
  78 {
  79   st_register_typename_keys(sef_sf_typename_keys);
  80   st_setcb_selement_transfer(sef_cb_sf_transfer_typename, ST_CB_TYPE_TYPENAME);
  81 }
  82