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src/file_emf.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-08 13:40:12 +02:00
parent b951fb7cae
commit f0a47950d9
1 changed files with 6 additions and 20 deletions
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26
src/file_emf.c
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@ -35,7 +35,7 @@
#include "__fc_builtin.h" #include "__fc_builtin.h"
#endif #endif
/*@ requires \valid(file_stat); */ /*@ requires valid_register_header_check(file_stat); */
static void register_header_check_emf(file_stat_t *file_stat); static void register_header_check_emf(file_stat_t *file_stat);
const file_hint_t file_hint_emf= { const file_hint_t file_hint_emf= {
@ -205,13 +205,10 @@ struct EMF_HDR
#define EMR_CREATECOLORSPACEW 122 #define EMR_CREATECOLORSPACEW 122
/*@ /*@
@ requires buffer_size >= 2;
@ requires (buffer_size&1)==0;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires \valid(file_recovery);
@ requires file_recovery->data_check==&data_check_emf; @ requires file_recovery->data_check==&data_check_emf;
@ requires file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE; @ requires buffer_size >= 2;
@ ensures \result == DC_CONTINUE || \result == DC_STOP || \result == DC_ERROR; @ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ ensures valid_data_check_result(\result, file_recovery);
@ assigns file_recovery->calculated_file_size; @ assigns file_recovery->calculated_file_size;
@*/ @*/
static data_check_t data_check_emf(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery) static data_check_t data_check_emf(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -367,16 +364,8 @@ static data_check_t data_check_emf(const unsigned char *buffer, const unsigned i
} }
/*@ /*@
@ requires buffer_size > 0; @ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ requires \valid_read(buffer+(0..buffer_size-1)); @ ensures valid_header_check_result(\result, file_recovery_new);
@ requires \valid_read(file_recovery);
@ requires file_recovery->file_stat==\null || valid_read_string((char*)file_recovery->filename);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ ensures (\result == 1) ==> (file_recovery_new->file_stat == \null);
@ ensures (\result == 1) ==> (file_recovery_new->handle == \null);
@ ensures (\result == 1) ==> (file_recovery_new->extension == file_hint_emf.extension); @ ensures (\result == 1) ==> (file_recovery_new->extension == file_hint_emf.extension);
@ ensures (\result == 1) ==> (file_recovery_new->time == 0); @ ensures (\result == 1) ==> (file_recovery_new->time == 0);
@ ensures (\result == 1) ==> (file_recovery_new->calculated_file_size >= 0x34); @ ensures (\result == 1) ==> (file_recovery_new->calculated_file_size >= 0x34);
@ -385,9 +374,6 @@ static data_check_t data_check_emf(const unsigned char *buffer, const unsigned i
@ ensures (\result == 1) ==> (file_recovery_new->data_check == &data_check_emf); @ ensures (\result == 1) ==> (file_recovery_new->data_check == &data_check_emf);
@ ensures (\result == 1) ==> (file_recovery_new->file_check == &file_check_size); @ ensures (\result == 1) ==> (file_recovery_new->file_check == &file_check_size);
@ ensures (\result == 1) ==> (file_recovery_new->file_rename== \null); @ ensures (\result == 1) ==> (file_recovery_new->file_rename== \null);
@ ensures (\result == 1) ==> (valid_read_string(file_recovery_new->extension));
@ ensures (\result == 1) ==> \separated(file_recovery_new, file_recovery_new->extension);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/
static int header_check_emf(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_emf(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)