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src/file_fp7.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-13 18:49:19 +02:00
parent 7ed17f2b47
commit 8fa16f4a50
1 changed files with 8 additions and 9 deletions
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17
src/file_fp7.c
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@ -30,9 +30,8 @@
#include "types.h" #include "types.h"
#include "filegen.h" #include "filegen.h"
/*@ requires \valid(file_stat); */ /*@ requires valid_register_header_check(file_stat); */
static void register_header_check_fp7(file_stat_t *file_stat); static void register_header_check_fp7(file_stat_t *file_stat);
static int header_check_fp7(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 file_hint_t file_hint_fp7= { const file_hint_t file_hint_fp7= {
.extension="fp7", .extension="fp7",
@ -43,20 +42,20 @@ const file_hint_t file_hint_fp7= {
.register_header_check=&register_header_check_fp7 .register_header_check=&register_header_check_fp7
}; };
/*@
@ requires valid_file_check_param(file_recovery);
@ ensures valid_file_check_result(file_recovery);
@ assigns file_recovery->file_size;
@*/
static void file_check_fp7(file_recovery_t *file_recovery) static void file_check_fp7(file_recovery_t *file_recovery)
{ {
file_recovery->file_size=file_recovery->file_size/4096*4096; file_recovery->file_size=file_recovery->file_size/4096*4096;
} }
/*@ /*@
@ requires buffer_size > 0;
@ 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_fp7, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_fp7, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1; @ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new); @ ensures valid_header_check_result(\result, file_recovery_new);
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/
static int header_check_fp7(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_fp7(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)