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src/file_icns.c: add frama-c annotations

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Christophe Grenier 2021-02-22 22:25:56 +01:00
parent d524874222
commit 6453c9b79b
1 changed files with 16 additions and 0 deletions
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16
src/file_icns.c
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@ -32,6 +32,7 @@
#include "filegen.h"
#include "common.h"
/*@ requires \valid(file_stat); */
static void register_header_check_icns(file_stat_t *file_stat);
const file_hint_t file_hint_icns= {
@ -56,6 +57,10 @@ struct icon_data
// uint8_t data[0];
};
/*@
@ requires \valid_read(type + (0 .. 3));
@ assigns \nothing;
@*/
static int check_icon_type(const char *type)
{
/* https://en.wikipedia.org/wiki/Apple_Icon_Image_format */
@ -97,6 +102,17 @@ static int check_icon_type(const char *type)
return 0;
}
/*@
@ requires buffer_size >= sizeof(struct icns_header) + sizeof(struct icon_data);
@ 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_icns, 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_icns(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 icns_header *hdr=(const struct icns_header *)buffer;