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src/file_pdb.c: fix Frama-C warnings

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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
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27
src/file_pdb.c
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@ -31,7 +31,7 @@
#include "types.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);
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;
@ 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;
@*/
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;
@ ensures valid_file_recovery(file_recovery);
@ assigns file_recovery->file_size;
@ requires valid_file_check_param(file_recovery);
@ 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)
{
unsigned char buffer[512];
char buffer[512];
if(my_fseek(file_recovery->handle, 0, SEEK_SET) < 0 ||
fread(&buffer, 1, sizeof(buffer), file_recovery->handle) < 82)
return ;
@ -92,13 +89,9 @@ static void file_check_pdb(file_recovery_t *file_recovery)
/*@
@ 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);
@ ensures \result == 0 || \result == 1;
@ 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);
@ 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)