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src/file_pdf.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-06 17:42:41 +02:00
parent aac4087e84
commit d8b6796870
1 changed files with 10 additions and 18 deletions
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28
src/file_pdf.c
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@ -41,7 +41,7 @@
#include "common.h" #include "common.h"
/*@ /*@
@ requires \valid(file_stat); @ requires valid_register_header_check(file_stat);
@*/ @*/
static void register_header_check_pdf(file_stat_t *file_stat); static void register_header_check_pdf(file_stat_t *file_stat);
@ -78,9 +78,9 @@ static unsigned int hex(const int c)
} }
/*@ /*@
@ requires \valid(file_recovery);
@ requires valid_read_string((char*)file_recovery->filename);
@ requires file_recovery->file_rename==&file_rename_pdf; @ requires file_recovery->file_rename==&file_rename_pdf;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/ @*/
static void file_rename_pdf(file_recovery_t *file_recovery) static void file_rename_pdf(file_recovery_t *file_recovery)
{ {
@ -315,10 +315,8 @@ static void file_date_pdf(file_recovery_t *file_recovery)
#define PDF_READ_SIZE 20 #define PDF_READ_SIZE 20
/*@ /*@
@ requires \valid(file_recovery); @ requires valid_file_check_param(file_recovery);
@ requires \valid(file_recovery->handle); @ ensures valid_file_check_result(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@*/ @*/
static void file_check_pdf_and_size(file_recovery_t *file_recovery) static void file_check_pdf_and_size(file_recovery_t *file_recovery)
{ {
@ -355,10 +353,8 @@ static void file_check_pdf_and_size(file_recovery_t *file_recovery)
} }
/*@ /*@
@ requires \valid(file_recovery); @ requires valid_file_check_param(file_recovery);
@ requires \valid(file_recovery->handle); @ ensures valid_file_check_result(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@*/ @*/
static void file_check_pdf(file_recovery_t *file_recovery) static void file_check_pdf(file_recovery_t *file_recovery)
{ {
@ -428,13 +424,9 @@ static uint64_t read_pdf_file(const unsigned char *buffer)
/*@ /*@
@ requires buffer_size >= 512; @ requires buffer_size >= 512;
@ requires \valid_read(buffer+(0..buffer_size-1)); @ requires separation: \separated(&file_hint_pdf, buffer+(..), file_recovery, file_recovery_new);
@ requires \valid_read(file_recovery); @ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ requires file_recovery->file_stat==\null || valid_read_string((char*)file_recovery->filename); @ ensures valid_header_check_result(\result, file_recovery_new);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(&file_hint_pdf, buffer, file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new; @ assigns *file_recovery_new;
@*/ @*/
static int header_check_pdf(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_pdf(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)