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src/file_als.c: Improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-06 08:49:26 +02:00
parent 23e0fed9fb
commit 8895673b12
1 changed files with 6 additions and 12 deletions
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18
src/file_als.c
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@ -31,7 +31,7 @@
#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_als(file_stat_t *file_stat); static void register_header_check_als(file_stat_t *file_stat);
const file_hint_t file_hint_als= { const file_hint_t file_hint_als= {
@ -44,12 +44,10 @@ const file_hint_t file_hint_als= {
}; };
/*@ /*@
@ requires \valid(file_recovery); @ requires file_recovery->file_check == &file_check_als;
@ requires \valid(file_recovery->handle);
@ requires valid_file_recovery(file_recovery);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source); @ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ ensures \valid(file_recovery->handle); @ requires valid_file_check_param(file_recovery);
@ ensures valid_file_recovery(file_recovery); @ ensures valid_file_check_result(file_recovery);
@ assigns *file_recovery->handle, errno, file_recovery->file_size; @ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source; @ assigns Frama_C_entropy_source;
@*/ @*/
@ -65,14 +63,10 @@ static void file_check_als(file_recovery_t *file_recovery)
/*@ /*@
@ requires buffer_size >= 11+13; @ requires buffer_size >= 11+13;
@ 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_als, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_als, 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_als(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_als(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)
{ {