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src/file_ddf.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-14 18:32:05 +01:00
parent 311eb50252
commit 7562c6d422
1 changed files with 42 additions and 0 deletions
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42
src/file_ddf.c
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@ -35,6 +35,7 @@
#include "filegen.h" #include "filegen.h"
#include "common.h" #include "common.h"
/*@ requires \valid(file_stat); */
static void register_header_check_ddf(file_stat_t *file_stat); static void register_header_check_ddf(file_stat_t *file_stat);
const file_hint_t file_hint_ddf= { const file_hint_t file_hint_ddf= {
@ -80,6 +81,14 @@ struct MasterHeader
char m_cRsvdData[120]; // (120) pad to 512 bytes char m_cRsvdData[120]; // (120) pad to 512 bytes
} __attribute__ ((gcc_struct, __packed__)); } __attribute__ ((gcc_struct, __packed__));
/*@
@ requires \valid_read(buffer+(0..sizeof(struct MasterHeader)-1));
@ requires \valid(file_recovery_new);
@ requires separation: \separated(&file_hint_ddf, buffer+(..), file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 1;
@ ensures valid_file_recovery(file_recovery_new);
@*/
static int header_check_aux(const unsigned char *buffer, file_recovery_t *file_recovery_new) static int header_check_aux(const unsigned char *buffer, file_recovery_t *file_recovery_new)
{ {
const char *date_asc=(const char *)&buffer[0x3f]; const char *date_asc=(const char *)&buffer[0x3f];
@ -92,6 +101,17 @@ static int header_check_aux(const unsigned char *buffer, file_recovery_t *file_r
return 1; return 1;
} }
/*@
@ requires buffer_size >= sizeof(struct MasterHeader);
@ 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_ddf, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ddf3(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_ddf3(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)
{ {
const struct MasterHeader *h=(const struct MasterHeader *)buffer; const struct MasterHeader *h=(const struct MasterHeader *)buffer;
@ -102,6 +122,17 @@ static int header_check_ddf3(const unsigned char *buffer, const unsigned int buf
return header_check_aux(buffer, file_recovery_new); return header_check_aux(buffer, file_recovery_new);
} }
/*@
@ requires buffer_size >= sizeof(struct MasterHeader);
@ 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_ddf, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ddf4(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_ddf4(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)
{ {
const struct MasterHeader *h=(const struct MasterHeader *)buffer; const struct MasterHeader *h=(const struct MasterHeader *)buffer;
@ -112,6 +143,17 @@ static int header_check_ddf4(const unsigned char *buffer, const unsigned int buf
return header_check_aux(buffer, file_recovery_new); return header_check_aux(buffer, file_recovery_new);
} }
/*@
@ requires buffer_size >= sizeof(struct MasterHeader);
@ 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_ddf, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_ddf5(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_ddf5(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)
{ {
const struct MasterHeader *h=(const struct MasterHeader *)buffer; const struct MasterHeader *h=(const struct MasterHeader *)buffer;