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src/file_lso.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-24 08:11:16 +01:00
parent 9602d3660a
commit 8a0191114e
1 changed files with 23 additions and 0 deletions
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23
src/file_lso.c
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@ -31,6 +31,7 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_lso(file_stat_t *file_stat);
const file_hint_t file_hint_lso= {
@ -42,12 +43,34 @@ const file_hint_t file_hint_lso= {
.register_header_check=&register_header_check_lso
};
/*@
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@
@ requires file_recovery->file_check == &file_check_lso;
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source;
@
@ ensures \valid(file_recovery->handle);
@*/
static void file_check_lso(file_recovery_t *file_recovery)
{
const unsigned char lso_footer[6]= {0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x7F};
file_search_footer(file_recovery, lso_footer, sizeof(lso_footer), 0x46);
}
/*@
@ 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_lso, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_lso(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)
{
reset_file_recovery(file_recovery_new);