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src/file_cow.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-06 16:23:24 +02:00
parent b932ef701f
commit 95d9c2b7b4
1 changed files with 5 additions and 13 deletions
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18
src/file_cow.c
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@ -33,7 +33,7 @@
#include "common.h" #include "common.h"
#include "log.h" #include "log.h"
/*@ requires \valid(file_stat); */ /*@ requires valid_register_header_check(file_stat); */
static void register_header_check_cow(file_stat_t *file_stat); static void register_header_check_cow(file_stat_t *file_stat);
const file_hint_t file_hint_cow= { const file_hint_t file_hint_cow= {
@ -78,14 +78,10 @@ typedef struct QCowHeader {
/*@ /*@
@ requires buffer_size >= sizeof(QCowHeader_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); @ requires separation: \separated(&file_hint_cow, buffer+(..), file_recovery, file_recovery_new);
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@ assigns *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) 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)
{ {
@ -102,14 +98,10 @@ static int header_check_qcow1(const unsigned char *buffer, const unsigned int bu
/*@ /*@
@ requires buffer_size >= sizeof(QCowHeader2_t); @ 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); @ requires separation: \separated(&file_hint_cow, buffer+(..), file_recovery, file_recovery_new);
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@ assigns *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) 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)
{ {