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src/file_m2ts.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-02 12:27:56 +02:00
parent f53cf3a494
commit cf3d5b6791
1 changed files with 18 additions and 34 deletions
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52
src/file_m2ts.c
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@ -31,9 +31,9 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_m2ts(file_stat_t *file_stat);
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_ts(file_stat_t *file_stat);
const file_hint_t file_hint_m2ts= {
@ -60,14 +60,9 @@ static const unsigned char tshv_header[4] = { 'T','S','H','V'};
static const unsigned char sdvs_header[4] = { 'S','D','V','S'};
/*@
@ 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_ts_192;
@ 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_ts_192(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -86,8 +81,9 @@ static data_check_t data_check_ts_192(const unsigned char *buffer, const unsigne
}
/*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires file_recovery->file_rename==&file_rename_ts_188;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_ts_188(file_recovery_t *file_recovery)
{
@ -116,8 +112,9 @@ static void file_rename_ts_188(file_recovery_t *file_recovery)
}
/*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires file_recovery->file_rename==&file_rename_ts_192;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_ts_192(file_recovery_t *file_recovery)
{
@ -146,14 +143,10 @@ static void file_rename_ts_192(file_recovery_t *file_recovery)
}
/*@
@ 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 buffer_size >= 0xe8 + 4;
@ requires separation: \separated(&file_hint_m2ts, &file_hint_ts, 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);
@*/
static int header_check_m2ts(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)
{
@ -202,14 +195,9 @@ static int header_check_m2ts(const unsigned char *buffer, const unsigned int buf
}
/*@
@ 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_ts_188;
@ 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_ts_188(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -228,14 +216,10 @@ static data_check_t data_check_ts_188(const unsigned char *buffer, const unsigne
}
/*@
@ 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 buffer_size >= 0x18b+sizeof(tshv_header);
@ requires separation: \separated(&file_hint_m2ts, &file_hint_ts, 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_m2t(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)