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src/file_r3d.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-08 20:58:01 +02:00
parent 260c40183b
commit a723179662
1 changed files with 9 additions and 21 deletions
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30
src/file_r3d.c
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@ -34,7 +34,7 @@
#include "common.h" #include "common.h"
#include "log.h" #include "log.h"
/*@ requires \valid(file_stat); */ /*@ requires valid_register_header_check(file_stat); */
static void register_header_check_r3d(file_stat_t *file_stat); static void register_header_check_r3d(file_stat_t *file_stat);
const file_hint_t file_hint_r3d = { const file_hint_t file_hint_r3d = {
@ -53,13 +53,9 @@ struct atom_struct
} __attribute__((gcc_struct, __packed__)); } __attribute__((gcc_struct, __packed__));
/*@ /*@
@ 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_r3d; @ requires file_recovery->data_check==&data_check_r3d;
@ requires \separated(buffer + (..), file_recovery); @ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ ensures \result == DC_CONTINUE || \result == DC_STOP; @ ensures valid_data_check_result(\result, file_recovery);
@ assigns file_recovery->calculated_file_size, file_recovery->data_check; @ assigns file_recovery->calculated_file_size, file_recovery->data_check;
@*/ @*/
static data_check_t data_check_r3d(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_r3d(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -105,9 +101,9 @@ static data_check_t data_check_r3d(const unsigned char *buffer, const unsigned i
} }
/*@ /*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires file_recovery->file_rename==&file_rename_r3d; @ requires file_recovery->file_rename==&file_rename_r3d;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/ @*/
static void file_rename_r3d(file_recovery_t *file_recovery) static void file_rename_r3d(file_recovery_t *file_recovery)
{ {
@ -132,13 +128,9 @@ static void file_rename_r3d(file_recovery_t *file_recovery)
/*@ /*@
@ requires buffer_size >= sizeof(struct atom_struct); @ requires buffer_size >= sizeof(struct atom_struct);
@ 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_r3d, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_r3d, 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_r3d(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_r3d(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)
@ -162,13 +154,9 @@ static int header_check_r3d(const unsigned char *buffer, const unsigned int buff
/*@ /*@
@ requires buffer_size >= 0xc; @ requires buffer_size >= 0xc;
@ 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_r3d, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_r3d, 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_r3d_v2(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_r3d_v2(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)