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src/file_frm.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-14 17:22:23 +02:00
parent 0c8a4d385d
commit 5fbb70657d
1 changed files with 5 additions and 13 deletions
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18
src/file_frm.c
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@ -33,7 +33,7 @@
#include "filegen.h"
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_frm(file_stat_t *file_stat);
const file_hint_t file_hint_frm= {
@ -46,12 +46,8 @@ const file_hint_t file_hint_frm= {
};
/*@
@ requires \valid(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires valid_file_recovery(file_recovery);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ ensures \valid(file_recovery->handle);
@ ensures valid_file_recovery(file_recovery);
@ 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;
@*/
@ -65,13 +61,9 @@ static void file_check_frm(file_recovery_t *file_recovery)
/*@
@ requires buffer_size >= 18;
@ 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_frm, 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_frm(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)