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src/file_fs.c: improve Frama-C annotations

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Christophe Grenier 2021-06-14 17:22:52 +02:00
parent 5fbb70657d
commit 75815a162e
1 changed files with 5 additions and 13 deletions
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18
src/file_fs.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_fs(file_stat_t *file_stat); static void register_header_check_fs(file_stat_t *file_stat);
const file_hint_t file_hint_fs= { const file_hint_t file_hint_fs= {
@ -58,14 +58,9 @@ struct transaction_header
} __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_fs; @ requires file_recovery->data_check==&data_check_fs;
@ requires file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE; @ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ requires \separated(buffer + (..), file_recovery); @ ensures valid_data_check_result(\result, file_recovery);
@ ensures \result == DC_CONTINUE || \result == DC_STOP;
@ assigns file_recovery->calculated_file_size; @ assigns file_recovery->calculated_file_size;
@*/ @*/
static data_check_t data_check_fs(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_fs(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -99,13 +94,10 @@ static data_check_t data_check_fs(const unsigned char *buffer, const unsigned in
/*@ /*@
@ requires buffer_size >= sizeof(struct transaction_header); @ requires buffer_size >= sizeof(struct transaction_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_fs, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_fs, 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 ==> valid_file_recovery(file_recovery_new);
@*/ @*/
static int header_check_fs(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_fs(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)
{ {