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src/file_mid.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-02 18:47:02 +02:00
parent d1b3110f84
commit 02a92c5bb3
1 changed files with 5 additions and 9 deletions
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14
src/file_mid.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_mid(file_stat_t *file_stat);
const file_hint_t file_hint_mid= {
@ -57,10 +57,10 @@ struct midi_header
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires file_recovery->file_check == &file_check_midi;
@ requires separation: \separated(file_recovery, file_recovery->handle, &errno, &Frama_C_entropy_source);
@ requires valid_file_check_param(file_recovery);
@ ensures valid_file_check_result(file_recovery);
@ assigns errno;
@ assigns file_recovery->calculated_file_size;
@ assigns file_recovery->file_size;
@ -134,14 +134,10 @@ static data_check_t data_check_midi(const unsigned char *buffer, const unsigned
/*@
@ requires buffer_size >= sizeof(struct midi_header);
@ 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_mid, 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 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_mid(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)
{