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src/file_dad.c: add Frama-C annotations

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Christophe Grenier 2021-06-06 16:59:59 +02:00
parent 45fd6de771
commit 859baf6511
1 changed files with 6 additions and 14 deletions
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18
src/file_dad.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_dad(file_stat_t *file_stat); static void register_header_check_dad(file_stat_t *file_stat);
const file_hint_t file_hint_dad= { const file_hint_t file_hint_dad= {
@ -54,14 +54,9 @@ struct dad_header
} __attribute__ ((gcc_struct, __packed__)); } __attribute__ ((gcc_struct, __packed__));
/*@ /*@
@ requires buffer_size > 0;
@ requires (buffer_size&1)==0;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires \valid(file_recovery);
@ requires file_recovery->data_check==&data_check_dad; @ requires file_recovery->data_check==&data_check_dad;
@ requires file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE; @ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ requires \separated(buffer, file_recovery); @ ensures valid_data_check_result(\result, file_recovery);
@ ensures \result == DC_CONTINUE || \result == DC_STOP;
@ assigns file_recovery->calculated_file_size; @ assigns file_recovery->calculated_file_size;
@*/ @*/
static data_check_t data_check_dad(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_dad(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -91,12 +86,9 @@ static data_check_t data_check_dad(const unsigned char *buffer, const unsigned i
/*@ /*@
@ requires buffer_size >= 10; @ requires buffer_size >= 10;
@ 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_dad, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_dad, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_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);
@*/ @*/
static int header_check_dad(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_dad(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)
{ {