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src/file_dpx.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-14 21:26:32 +01:00
parent b4782358d1
commit a9d7aacefa
1 changed files with 17 additions and 2 deletions
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19
src/file_dpx.c
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@ -35,6 +35,7 @@
#include "filegen.h"
#include "common.h"
/*@ requires \valid(file_stat); */
static void register_header_check_dpx(file_stat_t *file_stat);
const file_hint_t file_hint_dpx= {
@ -66,17 +67,29 @@ struct header_dpx
char Reserved[104]; /* reserved field TBD (need to pad) */
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires buffer_size >= sizeof(struct header_dpx);
@ 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_dpx, 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_dpx(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)
{
static const unsigned char ver10[8]= {'V', '1', '.', '0', 0x00, 0x00, 0x00, 0x00};
const struct header_dpx *dpx=(const struct header_dpx *)buffer;
const unsigned int file_size=be32(dpx->file_size);
if(memcmp(dpx->vers, ver10, sizeof(ver10))==0)
{
if(be32(dpx->file_size) < 19)
if(file_size < sizeof(struct header_dpx))
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_dpx.extension;
file_recovery_new->calculated_file_size=be32(dpx->file_size);
file_recovery_new->calculated_file_size=file_size;
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
file_recovery_new->time=get_time_from_YYYY_MM_DD_HH_MM_SS(dpx->create_time);
@ -88,6 +101,8 @@ static int header_check_dpx(const unsigned char *buffer, const unsigned int buff
static void register_header_check_dpx(file_stat_t *file_stat)
{
register_header_check(0, "SDPX", 4, &header_check_dpx, file_stat);
#ifndef __FRAMAC__
register_header_check(0, "XPDS", 4, &header_check_dpx, file_stat);
#endif
}
#endif