From 9cc7caa7b264225bfadd3c653a76a5e1e3669855 Mon Sep 17 00:00:00 2001 From: Christophe Grenier Date: Sun, 21 Feb 2021 17:59:29 +0100 Subject: [PATCH] src/file_gp5.c: add frama-c annotations --- src/file_gp5.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/src/file_gp5.c b/src/file_gp5.c index fcd66d09..18f7c9ba 100644 --- a/src/file_gp5.c +++ b/src/file_gp5.c @@ -31,6 +31,7 @@ #include "types.h" #include "filegen.h" +/*@ requires \valid(file_stat); */ static void register_header_check_gp5(file_stat_t *file_stat); const file_hint_t file_hint_gp5= { @@ -42,6 +43,17 @@ const file_hint_t file_hint_gp5= { .register_header_check=®ister_header_check_gp5 }; +/*@ + @ requires \valid(file_recovery); + @ requires \valid(file_recovery->handle); + @ 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_gp5; + @ ensures \valid(file_recovery->handle); + @ ensures valid_file_recovery(file_recovery); + @ assigns *file_recovery->handle, errno, file_recovery->file_size; + @ assigns Frama_C_entropy_source; + @*/ static void file_check_gp5(file_recovery_t *file_recovery) { const unsigned char gp5_footer[13]= { @@ -51,6 +63,17 @@ static void file_check_gp5(file_recovery_t *file_recovery) file_search_footer(file_recovery, gp5_footer, sizeof(gp5_footer), 0); } +/*@ + @ requires buffer_size >= 23; + @ 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_gp5, 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_gp5(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) { if(buffer[22]!='.')