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src/file_mov.c: improve Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-07-02 19:02:27 +02:00
parent 9c9f9a62e8
commit cbd5f94de9
1 changed files with 12 additions and 24 deletions
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36
src/file_mov.c
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@ -37,9 +37,9 @@
#include "__fc_builtin.h"
#endif
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_mov(file_stat_t *file_stat);
/*@ requires \valid(file_stat); */
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_mov_mdat(file_stat_t *file_stat);
const file_hint_t file_hint_mov= {
@ -82,9 +82,9 @@ struct atom64_struct
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires \valid(file_recovery);
@ requires valid_file_recovery(file_recovery);
@ requires file_recovery->file_rename == &file_rename_mov;
@ requires valid_file_rename_param(file_recovery);
@ ensures valid_file_rename_result(file_recovery);
@*/
static void file_rename_mov(file_recovery_t *file_recovery)
{
@ -135,12 +135,9 @@ static inline int is_known_atom(const unsigned char *atom)
/*@
@ requires buffer_size >= 16;
@ requires (buffer_size&1)==0;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires \valid(file_recovery);
@ requires file_recovery->data_check==&data_check_mov;
@ requires \separated(buffer + (..), file_recovery);
@ ensures \result == DC_CONTINUE || \result == DC_STOP;
@ requires valid_data_check_param(buffer, buffer_size, file_recovery);
@ ensures valid_data_check_result(\result, file_recovery);
@ assigns file_recovery->calculated_file_size;
@*/
static data_check_t data_check_mov(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
@ -219,13 +216,9 @@ static data_check_t data_check_mov(const unsigned char *buffer, const unsigned i
/*@
@ requires buffer_size >= 16;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ 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;
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ 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) ==> (file_recovery_new->extension == file_hint_mov.extension ||
@ -244,7 +237,6 @@ static data_check_t data_check_mov(const unsigned char *buffer, const unsigned i
@ ensures (\result == 1 && (file_recovery_new->extension == extension_jp2 || file_recovery_new->blocksize < 16)) ==> (file_recovery_new->data_check == \null && file_recovery_new->file_check == \null && file_recovery_new->file_rename == \null && file_recovery_new->min_filesize > 0);
@ ensures (\result == 1 && file_recovery_new->extension != extension_jp2 && file_recovery_new->blocksize >= 16) ==> (file_recovery_new->calculated_file_size > 0 && file_recovery_new->file_check == &file_check_size && file_recovery_new->data_check == &data_check_mov);
@ ensures (\result == 1) ==> \separated(file_recovery_new, file_recovery_new->extension);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_mov_aux(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)
{
@ -486,12 +478,9 @@ static int header_check_mov_aux(const unsigned char *buffer, const unsigned int
/*@
@ requires buffer_size >= 16;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires \valid_read(file_recovery);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@ ensures (\result == 1) ==> (file_recovery_new->extension == file_hint_mov.extension ||
file_recovery_new->extension == extension_3g2 ||
file_recovery_new->extension == extension_3gp ||
@ -506,7 +495,6 @@ static int header_check_mov_aux(const unsigned char *buffer, const unsigned int
@ ensures (\result == 1 && file_recovery_new->extension != file_hint_mov.extension) ==> (file_recovery_new->file_rename == \null);
@ ensures (\result == 1 && (file_recovery_new->extension == extension_jp2 || file_recovery_new->blocksize < 16)) ==> (file_recovery_new->data_check == \null && file_recovery_new->file_check == \null && file_recovery_new->file_rename == \null && file_recovery_new->min_filesize > 0);
@ ensures (\result == 1 && file_recovery_new->extension != extension_jp2 && file_recovery_new->blocksize >= 16) ==> (file_recovery_new->calculated_file_size > 0 && file_recovery_new->file_check == &file_check_size && file_recovery_new->data_check == &data_check_mov);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_mov(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)
{
@ -522,7 +510,7 @@ static int header_check_mov(const unsigned char *buffer, const unsigned int buff
}
/*@
@ requires \valid(file_stat);
@ requires valid_register_header_check(file_stat);
@*/
static void register_header_check_mov_mdat(file_stat_t *file_stat)
{
@ -530,7 +518,7 @@ static void register_header_check_mov_mdat(file_stat_t *file_stat)
}
/*@
@ requires \valid(file_stat);
@ requires valid_register_header_check(file_stat);
@*/
static void register_header_check_mov(file_stat_t *file_stat)
{