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src/file_arj.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-13 11:38:38 +01:00
parent f26b06cb69
commit f68f009d5f
1 changed files with 20 additions and 0 deletions
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20
src/file_arj.c
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@ -32,6 +32,7 @@
#include "filegen.h"
#include "common.h"
/*@ requires \valid(file_stat); */
static void register_header_check_arj(file_stat_t *file_stat);
const file_hint_t file_hint_arj= {
@ -117,12 +118,31 @@ struct arj_main_header {
char filename;
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires valid_file_recovery(file_recovery);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ requires file_recovery->file_check == &file_check_arj;
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source;
@
@ ensures \valid(file_recovery->handle);
@*/
static void file_check_arj(file_recovery_t *file_recovery)
{
static const unsigned char arj_footer[4]={0x60, 0xEA, 0x00, 0x00 };
file_search_footer(file_recovery, arj_footer, sizeof(arj_footer), 0);
}
/*@
@ requires buffer_size > sizeof(struct arj_main_header);
@ 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_arj, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_arj(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 arj_main_header *arj=(const struct arj_main_header*)buffer;