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src/file_hm.c: add Frama-C annotations

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Christophe Grenier 2021-04-10 10:45:27 +02:00
parent 890256bfab
commit 94a561554e
1 changed files with 21 additions and 9 deletions
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30
src/file_hm.c
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@ -31,27 +31,39 @@
#include "types.h" #include "types.h"
#include "filegen.h" #include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_hm(file_stat_t *file_stat); static void register_header_check_hm(file_stat_t *file_stat);
const file_hint_t file_hint_hm= { const file_hint_t file_hint_hm = {
.extension="hm", .extension = "hm",
.description="HyperMesh, structural analysis software", .description = "HyperMesh, structural analysis software",
.max_filesize=PHOTOREC_MAX_FILE_SIZE, .max_filesize = PHOTOREC_MAX_FILE_SIZE,
.recover=1, .recover = 1,
.enable_by_default=1, .enable_by_default = 1,
.register_header_check=&register_header_check_hm .register_header_check = &register_header_check_hm
}; };
/*@
@ 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_hm, 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_hm(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_hm(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); reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_hm.extension; file_recovery_new->extension = file_hint_hm.extension;
return 1; return 1;
} }
static void register_header_check_hm(file_stat_t *file_stat) static void register_header_check_hm(file_stat_t *file_stat)
{ {
static const unsigned char hm_header[23]= { static const unsigned char hm_header[23] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x14, 0x40, 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x14, 0x40, 0x1f, 0x8b, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0b, 0xed 0x00, 0x00, 0x00, 0x00, 0x00, 0x0b, 0xed