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src/file_mfa.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-02 17:11:17 +02:00
parent a681fed2c7
commit 9f3fa1ea9b
1 changed files with 5 additions and 15 deletions
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20
src/file_mfa.c
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@ -30,7 +30,7 @@
#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_mfa(file_stat_t *file_stat); static void register_header_check_mfa(file_stat_t *file_stat);
const file_hint_t file_hint_mfa= { const file_hint_t file_hint_mfa= {
@ -43,16 +43,11 @@ const file_hint_t file_hint_mfa= {
}; };
/*@ /*@
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ requires \initialized(&file_recovery->time);
@
@ requires file_recovery->file_check == &file_check_mfa; @ requires file_recovery->file_check == &file_check_mfa;
@ requires valid_file_check_param(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;
@
@ ensures \valid(file_recovery->handle);
@*/ @*/
static void file_check_mfa(file_recovery_t *file_recovery) static void file_check_mfa(file_recovery_t *file_recovery)
{ {
@ -61,15 +56,10 @@ static void file_check_mfa(file_recovery_t *file_recovery)
} }
/*@ /*@
@ 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_mfa, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_mfa, 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_mfa(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_mfa(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)
{ {