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src/file_cow.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-14 16:56:02 +01:00
parent 0c283aa0cb
commit b6661c02d6
1 changed files with 23 additions and 0 deletions
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23
src/file_cow.c
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@ -33,6 +33,7 @@
#include "common.h"
#include "log.h"
/*@ requires \valid(file_stat); */
static void register_header_check_cow(file_stat_t *file_stat);
const file_hint_t file_hint_cow= {
@ -75,6 +76,17 @@ typedef struct QCowHeader {
uint64_t snapshots_offset;
} QCowHeader2_t;
/*@
@ requires buffer_size >= sizeof(QCowHeader_t);
@ 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_cow, 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_qcow1(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 QCowHeader_t *header=(const QCowHeader_t*)buffer;
@ -88,6 +100,17 @@ static int header_check_qcow1(const unsigned char *buffer, const unsigned int bu
return 1;
}
/*@
@ requires buffer_size >= sizeof(QCowHeader2_t);
@ 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_cow, 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_qcow2(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 QCowHeader2_t *header=(const QCowHeader2_t*)buffer;