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src/file_flac.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-12 22:18:17 +02:00
parent 03b6dbe563
commit 0ff17f26af
1 changed files with 5 additions and 13 deletions
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18
src/file_flac.c
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@ -33,7 +33,7 @@
#include "common.h"
#include "log.h"
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_flac(file_stat_t *file_stat);
const file_hint_t file_hint_flac= {
@ -48,14 +48,9 @@ const file_hint_t file_hint_flac= {
/* https://xiph.org/flac/format.html */
/*@
@ 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_flac_metadata;
@ requires file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE;
@ requires \separated(buffer, file_recovery);
@ ensures \result == DC_CONTINUE || \result == DC_ERROR;
@ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ ensures valid_data_check_result(\result, file_recovery);
@ assigns file_recovery->calculated_file_size, file_recovery->data_check;
@*/
static data_check_t data_check_flac_metadata(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -86,13 +81,10 @@ static data_check_t data_check_flac_metadata(const unsigned char *buffer, const
/*@
@ requires buffer_size >= 8;
@ 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_flac, 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;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_flac(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)
{