luisgulo/testdisk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

src/file_pcx.c: add frama-c annotations

Browse source
This commit is contained in:
Christophe Grenier 2021-02-27 10:28:46 +01:00
parent 4feb83946b
commit c8fd4aa5d5
1 changed files with 18 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
src/file_pcx.c
View file

@ -35,8 +35,8 @@
#include "log.h"
#endif
/*@ requires \valid(file_stat); */
static void register_header_check_pcx(file_stat_t *file_stat);
static int header_check_pcx(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);
const file_hint_t file_hint_pcx= {
.extension="pcx",
@ -47,7 +47,6 @@ const file_hint_t file_hint_pcx= {
.register_header_check=&register_header_check_pcx
};
static const unsigned char pcx_header[1]= {0x0a};
struct pcx_file_entry {
uint8_t Manufacturer; /* should always be 0Ah */
uint8_t Version;
@ -78,11 +77,17 @@ struct pcx_file_entry {
uint8_t Filler[56];
} __attribute__ ((gcc_struct, __packed__));
static void register_header_check_pcx(file_stat_t *file_stat)
{
register_header_check(0, pcx_header,sizeof(pcx_header), &header_check_pcx, file_stat);
}
/*@
@ requires buffer_size >= sizeof(struct pcx_file_entry);
@ 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_pcx, 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_pcx(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)
{
const struct pcx_file_entry *pcx=(const struct pcx_file_entry *)buffer;
@ -111,4 +116,10 @@ static int header_check_pcx(const unsigned char *buffer, const unsigned int buff
}
return 0;
}
static void register_header_check_pcx(file_stat_t *file_stat)
{
static const unsigned char pcx_header[1]= {0x0a};
register_header_check(0, pcx_header,sizeof(pcx_header), &header_check_pcx, file_stat);
}
#endif