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src/file_exs.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-09 19:22:43 +02:00
parent 1c389d6fc5
commit 3a18ec1bec
1 changed files with 7 additions and 16 deletions
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23
src/file_exs.c
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@ -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_exs(file_stat_t *file_stat); static void register_header_check_exs(file_stat_t *file_stat);
const file_hint_t file_hint_exs= { const file_hint_t file_hint_exs= {
@ -44,9 +44,9 @@ const file_hint_t file_hint_exs= {
}; };
/*@ /*@
@ requires \valid(file_recovery);
@ requires valid_read_string((char*)&file_recovery->filename);
@ requires file_recovery->file_rename==&file_rename_exs; @ requires file_recovery->file_rename==&file_rename_exs;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/ @*/
static void file_rename_exs(file_recovery_t *file_recovery) static void file_rename_exs(file_recovery_t *file_recovery)
{ {
@ -60,22 +60,13 @@ static void file_rename_exs(file_recovery_t *file_recovery)
file_rename(file_recovery, buffer, buffer_size, 0x14, "exs", 0); file_rename(file_recovery, buffer, buffer_size, 0x14, "exs", 0);
} }
/*@ /*@
@ requires buffer_size >= 0x14; @ requires buffer_size >= 0x14;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires \valid_read(file_recovery);
@ requires file_recovery->file_stat==\null || valid_read_string((char*)file_recovery->filename);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(&file_hint_exs, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_exs, 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 == 1) ==> (file_recovery_new->file_stat == \null); @ ensures valid_header_check_result(\result, file_recovery_new);
@ ensures (\result == 1) ==> (file_recovery_new->handle == \null); @ ensures (\result == 1) ==> (file_recovery_new->file_rename == &file_rename_exs);
@ ensures (\result == 1) ==> (file_recovery_new->file_rename == &file_rename_exs); @ ensures (\result == 1) ==> (valid_read_string(file_recovery_new->extension));
@ ensures (\result == 1) ==> (valid_read_string(file_recovery_new->extension));
@ ensures (\result == 1) ==> \separated(file_recovery_new, file_recovery_new->extension);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/
static int header_check_exs(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_exs(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)