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

Add the possibility to clone read sectors (Disabled at compile time by default).

Browse source
This commit is contained in:
Christophe Grenier 2011-04-03 17:49:34 +02:00
parent 73e8653aa1
commit 44857c2c37
1 changed files with 44 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
src/hdaccess.c
View file

@ -108,6 +108,10 @@
#include "alignio.h"
#include "hpa_dco.h"
#if defined(HAVE_PREAD) && defined(TARGET_LINUX)
//#define HDCLONE 1
#endif
struct tdewf_file_header
{
/* The EWF file signature (magic header)
@ -135,6 +139,9 @@ struct tdewf_file_header
struct info_file_struct
{
int handle;
#ifdef HDCLONE
int handle_clone;
#endif
char file_name[DISKNAME_MAX];
int mode;
};
@ -1099,6 +1106,13 @@ static int file_clean(disk_t *disk_car)
}
#endif
*/
#ifdef HDCLONE
if(data->handle_clone>0)
{
close(data->handle_clone);
data->handle_clone=0;
}
#endif
close(data->handle);
}
return generic_clean(disk_car);
@ -1169,6 +1183,17 @@ static int file_pread_aux(disk_t *disk_car, void *buf, const unsigned int count,
}
memset((char*)buf+ret,0,count-ret);
}
#ifdef HDCLONE
else
{
int handle_clone=((struct info_file_struct *)disk_car->data)->handle_clone;
if(handle_clone>0)
{
pwrite(handle_clone, buf, count, offset);
fdatasync(handle_clone);
}
}
#endif
return ret;
}
@ -1508,10 +1533,25 @@ disk_t *file_test_availability(const char *device, const int verbose, const arch
}
update_disk_car_fields(disk_car);
#if defined(POSIX_FADV_SEQUENTIAL) && defined(HAVE_POSIX_FADVISE)
posix_fadvise(hd_h,0,0,POSIX_FADV_SEQUENTIAL);
// posix_fadvise(hd_h,0,0,POSIX_FADV_SEQUENTIAL);
#endif
if(disk_car->disk_real_size!=0)
{
#ifdef HDCLONE
if(strncmp(device, "/dev/", 5)==0)
{
char *new_file=(char *)MALLOC(strlen(device)+5);
sprintf(new_file, "%s.dd", device);
#ifdef O_LARGEFILE
data->handle_clone=open(new_file, O_CREAT|O_EXCL|O_LARGEFILE|O_WRONLY,00600);
#else
data->handle_clone=open(new_file, O_CREAT|O_EXCL|O_WRONLY,00600);
#endif
free(new_file);
}
#endif
return disk_car;
}
if(disk_car->model==NULL)
log_warning("Warning: can't get size for %s, sector size=%u\n",
disk_car->description(disk_car), disk_car->sector_size);
@ -1602,6 +1642,9 @@ void init_disk(disk_t *disk)
{
disk->autodetect=0;
disk->disk_size=0;
disk->user_max=0;
disk->native_max=0;
disk->dco=0;
/* Note, some Raid reserve the first 1024 512-sectors */
disk->offset=0;
disk->rbuffer=NULL;