luisgulo/testdisk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

src/file_pdb.c: fix Frama-C warnings

Browse source
This commit is contained in:
Christophe Grenier 2021-07-05 13:54:20 +02:00
parent 9e4cf0aa03
commit aac4087e84
1 changed files with 10 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
src/file_pdb.c
View file

@ -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_pdb(file_stat_t *file_stat); static void register_header_check_pdb(file_stat_t *file_stat);
const file_hint_t file_hint_pdb= { const file_hint_t file_hint_pdb= {
@ -44,12 +44,9 @@ const file_hint_t file_hint_pdb= {
}; };
/*@ /*@
@ 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_pdb; @ requires file_recovery->data_check==&data_check_pdb;
@ ensures \result == DC_CONTINUE || \result == DC_STOP; @ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ ensures valid_data_check_result(\result, file_recovery);
@ assigns file_recovery->calculated_file_size; @ assigns file_recovery->calculated_file_size;
@*/ @*/
static data_check_t data_check_pdb(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_pdb(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -67,15 +64,15 @@ static data_check_t data_check_pdb(const unsigned char *buffer, const unsigned i
} }
/*@ /*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires file_recovery->file_check == &file_check_pdb; @ requires file_recovery->file_check == &file_check_pdb;
@ ensures valid_file_recovery(file_recovery); @ requires valid_file_check_param(file_recovery);
@ assigns file_recovery->file_size; @ ensures valid_file_check_result(file_recovery);
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source;
@*/ @*/
static void file_check_pdb(file_recovery_t *file_recovery) static void file_check_pdb(file_recovery_t *file_recovery)
{ {
unsigned char buffer[512]; char buffer[512];
if(my_fseek(file_recovery->handle, 0, SEEK_SET) < 0 || if(my_fseek(file_recovery->handle, 0, SEEK_SET) < 0 ||
fread(&buffer, 1, sizeof(buffer), file_recovery->handle) < 82) fread(&buffer, 1, sizeof(buffer), file_recovery->handle) < 82)
return ; return ;
@ -92,13 +89,9 @@ static void file_check_pdb(file_recovery_t *file_recovery)
/*@ /*@
@ requires buffer_size >= 70; @ requires buffer_size >= 70;
@ 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_pdb, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_pdb, 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_pdb(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_pdb(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)