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src/file_ext.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-12 11:37:31 +02:00
parent 7c62ec1682
commit 044a634188
1 changed files with 11 additions and 22 deletions
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33
src/file_ext.c
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@ -34,7 +34,7 @@
#include "filegen.h"
#include "log.h"
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_ext2_sb(file_stat_t *file_stat);
const file_hint_t file_hint_ext2_sb= {
@ -47,9 +47,9 @@ const file_hint_t file_hint_ext2_sb= {
};
/*@
@ requires \valid(file_recovery);
@ requires valid_read_string((char*)&file_recovery->filename);
@ requires file_recovery->file_rename==&file_rename_ext;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_ext(file_recovery_t *file_recovery)
{
@ -80,13 +80,10 @@ static void file_rename_ext(file_recovery_t *file_recovery)
/*@
@ requires buffer_size >= sizeof(struct ext2_super_block);
@ 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_ext2_sb, 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;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ext2_sb(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)
{
@ -104,14 +101,9 @@ static int header_check_ext2_sb(const unsigned char *buffer, const unsigned int
}
/*@
@ 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_extdir;
@ requires file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE;
@ requires \separated(buffer, file_recovery);
@ 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_extdir(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -122,8 +114,8 @@ static data_check_t data_check_extdir(const unsigned char *buffer, const unsigne
}
/*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_extdir(file_recovery_t *file_recovery)
{
@ -152,13 +144,10 @@ static void file_rename_extdir(file_recovery_t *file_recovery)
/*@
@ requires buffer_size >= sizeof(struct ext2_super_block);
@ 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_ext2_sb, 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;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ext2_dir(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)
{