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src/file_nk2.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-25 17:28:18 +01:00
parent 214a1dfc1b
commit f250f91da0
1 changed files with 19 additions and 4 deletions
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23
src/file_nk2.c
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@ -90,10 +90,13 @@ typedef struct {
/*@
@ requires \valid(fr);
@ requires valid_file_recovery(fr);
@ requires \valid(fr->handle);
@ requires \separated(fr, fr->handle);
@ requires \separated(fr, fr->handle, fr->extension, &errno, &Frama_C_entropy_source);
@ requires fr->file_check == &file_check_nk2;
@ ensures \valid(fr->handle);
@ assigns *fr->handle, errno, fr->file_size, fr->offset_error, fr->offset_ok;
@ assigns Frama_C_entropy_source;
@*/
static void file_check_nk2(file_recovery_t *fr)
{
@ -112,6 +115,11 @@ static void file_check_nk2(file_recovery_t *fr)
#ifdef DEBUG_NK2
log_info("nk2 item_count=%u\n", (unsigned int)le32(nk2h.items_count));
#endif
/*@
@ loop assigns *fr->handle, errno, fr->file_size, fr->offset_error;
@ loop assigns Frama_C_entropy_source;
@ loop assigns i;
@*/
for(i=0; i<le32(nk2h.items_count); i++)
{
unsigned int j;
@ -135,6 +143,11 @@ static void file_check_nk2(file_recovery_t *fr)
#ifdef DEBUG_NK2
log_info("nk2 entries_count=%u\n", (unsigned int)le32(itemh.entries_count));
#endif
/*@
@ loop assigns *fr->handle, errno, fr->file_size, fr->offset_error;
@ loop assigns Frama_C_entropy_source;
@ loop assigns j;
@*/
for(j=0; j<le32(itemh.entries_count); j++)
{
uint64_t size;
@ -216,13 +229,15 @@ static void file_check_nk2(file_recovery_t *fr)
}
/*@
@ requires buffer_size >= 6;
@ requires buffer_size > 0;
@ 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(file_recovery);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(&file_hint_nk2, 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_nk2(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)
{