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src/file_caf.c: improve Frama-C annotations

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Christophe Grenier 2021-06-06 15:39:36 +02:00
parent b8625949c3
commit 41b3618c1b
1 changed files with 5 additions and 15 deletions
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20
src/file_caf.c
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@ -36,7 +36,7 @@
#include "log.h" #include "log.h"
#endif #endif
/*@ requires \valid(file_stat); */ /*@ requires valid_register_header_check(file_stat); */
static void register_header_check_caf(file_stat_t *file_stat); static void register_header_check_caf(file_stat_t *file_stat);
const file_hint_t file_hint_caf= { const file_hint_t file_hint_caf= {
@ -58,17 +58,11 @@ struct chunk_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_caf; @ requires file_recovery->data_check==&data_check_caf;
@ 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,file_recovery->data_check,file_recovery->file_check; @ assigns file_recovery->calculated_file_size,file_recovery->data_check,file_recovery->file_check;
@*/ @*/
/* requires file_recovery->calculated_file_size > 0; */
static data_check_t data_check_caf(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_caf(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
{ {
/*@ /*@
@ -114,13 +108,9 @@ static data_check_t data_check_caf(const unsigned char *buffer, const unsigned i
} }
/*@ /*@
@ 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_caf, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_caf, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_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);
@ ensures \result!=0 && file_recovery_new->data_check==&data_check_caf ==> file_recovery_new->calculated_file_size == 8; @ ensures \result!=0 && file_recovery_new->data_check==&data_check_caf ==> file_recovery_new->calculated_file_size == 8;
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/