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src/file_ace.c: Improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-06-06 11:26:08 +02:00
parent 23aa340517
commit ad878c302d
1 changed files with 5 additions and 27 deletions
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32
src/file_ace.c
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@ -40,7 +40,7 @@
/* #define DEBUG_ACE */ /* #define DEBUG_ACE */
/*@ /*@
@ requires \valid(file_stat); @ requires valid_register_header_check(file_stat);
@*/ @*/
static void register_header_check_ace(file_stat_t *file_stat); static void register_header_check_ace(file_stat_t *file_stat);
@ -111,16 +111,11 @@ static int check_ace_crc(FILE *handle, const unsigned int len, const unsigned in
} }
/*@ /*@
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ requires \initialized(&file_recovery->time);
@
@ requires file_recovery->file_check == &file_check_ace; @ requires file_recovery->file_check == &file_check_ace;
@ requires valid_file_check_param(file_recovery);
@ ensures valid_file_check_result(file_recovery);
@ assigns *file_recovery->handle, errno, file_recovery->file_size, file_recovery->offset_error, file_recovery->offset_ok; @ assigns *file_recovery->handle, errno, file_recovery->file_size, file_recovery->offset_error, file_recovery->offset_ok;
@ assigns Frama_C_entropy_source; @ assigns Frama_C_entropy_source;
@
@ ensures \valid(file_recovery->handle);
@*/ @*/
static void file_check_ace(file_recovery_t *file_recovery) static void file_check_ace(file_recovery_t *file_recovery)
{ {
@ -202,32 +197,15 @@ static void file_check_ace(file_recovery_t *file_recovery)
} }
/*@ /*@
@ 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 buffer_size >= sizeof(ace_header_t); @ requires buffer_size >= sizeof(ace_header_t);
@ requires separation: \separated(&file_hint_ace, buffer+(..), file_recovery, file_recovery_new); @ requires separation: \separated(&file_hint_ace, buffer+(..), file_recovery, file_recovery_new);
@ @ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1; @ ensures valid_header_check_result(\result, file_recovery_new);
@ ensures (\result == 1) ==> (file_recovery_new->file_stat == \null);
@ ensures (\result == 1) ==> (file_recovery_new->handle == \null);
@ ensures (\result == 1) ==> \initialized(&file_recovery_new->time);
@ ensures (\result == 1) ==> \initialized(&file_recovery_new->calculated_file_size);
@ ensures (\result == 1) ==> file_recovery_new->file_size == 0; @ ensures (\result == 1) ==> file_recovery_new->file_size == 0;
@ ensures (\result == 1) ==> \initialized(&file_recovery_new->min_filesize);
@ ensures (\result == 1) ==> (file_recovery_new->data_check == \null || \valid_function(file_recovery_new->data_check));
@ ensures (\result == 1) ==> (file_recovery_new->file_check == \null || \valid_function(file_recovery_new->file_check));
@ ensures (\result == 1) ==> (file_recovery_new->file_rename == \null || \valid_function(file_recovery_new->file_rename));
@ ensures (\result != 0) ==> file_recovery_new->extension != \null;
@
@ 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 == 0); @ ensures (\result == 1) ==> (file_recovery_new->calculated_file_size == 0);
@ ensures (\result == 1) ==> (file_recovery_new->extension == file_hint_ace.extension); @ ensures (\result == 1) ==> (file_recovery_new->extension == file_hint_ace.extension);
@ ensures (\result == 1) ==> (file_recovery_new->file_check == &file_check_ace); @ ensures (\result == 1) ==> (file_recovery_new->file_check == &file_check_ace);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/
static int header_check_ace(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_ace(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)