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src/file_ds2.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-14 22:11:16 +01:00
parent 5acbbc4884
commit 0f5072f356
1 changed files with 16 additions and 1 deletions
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17
src/file_ds2.c
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@ -34,6 +34,7 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_ds2(file_stat_t *file_stat);
const file_hint_t file_hint_ds2= {
@ -56,10 +57,24 @@ const file_hint_t file_hint_ds2= {
Filesize is always a multiple of 512
*/
/*@
@ requires buffer_size >= 0x32;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(&file_hint_ds2, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ds2(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
const char *date_asc=(const char *)&buffer[0x26];
const unsigned char *date_asc=&buffer[0x26];
unsigned int i;
/*@
@ loop assigns i;
@ */
for(i=0; i<24; i++)
if(!isdigit(date_asc[i]))
return 0;