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Rewrite and export crypt_wipe function.

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The crypt_wipe can be used to wipe any part of the device,
and also to initialize integrity based device (to reset checksum).
This commit is contained in:
Milan Broz
2017-06-07 15:31:13 +02:00
parent c6408f4b31
commit 3a27c84d98
10 changed files with 359 additions and 177 deletions
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65
src/utils_tools.c
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@@ -22,6 +22,7 @@
*/
#include "cryptsetup.h"
#include <math.h>
#include <signal.h>
int opt_verbose = 0;
@@ -325,3 +326,67 @@ int tools_string_to_size(struct crypt_device *cd, const char *s, uint64_t *size)
*size = tmp;
return 0;
}
/* Time progress helper */
/* The difference in seconds between two times in "timeval" format. */
static double time_diff(struct timeval *start, struct timeval *end)
{
return (end->tv_sec - start->tv_sec)
+ (end->tv_usec - start->tv_usec) / 1E6;
}
// FIXME: detect terminal type
void tools_clear_line(void)
{
/* vt100 code clear line */
log_std("\33[2K\r");
}
void tools_time_progress(uint64_t device_size, uint64_t bytes,
struct timeval *start_time, struct timeval *end_time)
{
struct timeval now_time;
unsigned long long mbytes, eta;
double tdiff, mib;
int final = (bytes == device_size);
gettimeofday(&now_time, NULL);
if (start_time->tv_sec == 0 && start_time->tv_usec == 0) {
*start_time = now_time;
*end_time = now_time;
return;
}
if (!final && time_diff(end_time, &now_time) < 0.5)
return;
*end_time = now_time;
tdiff = time_diff(start_time, end_time);
if (!tdiff)
return;
mbytes = bytes / 1024 / 1024;
mib = (double)(mbytes) / tdiff;
if (!mib)
return;
/* FIXME: calculate this from last minute only and remaining space */
eta = (unsigned long long)(device_size / 1024 / 1024 / mib - tdiff);
tools_clear_line();
if (final)
log_std("Finished, time %02llu:%02llu.%03llu, "
"%4llu MiB written, speed %5.1f MiB/s\n",
(unsigned long long)tdiff / 60,
(unsigned long long)tdiff % 60,
(unsigned long long)((tdiff - floor(tdiff)) * 1000.0),
mbytes, mib);
else
log_std("Progress: %5.1f%%, ETA %02llu:%02llu, "
"%4llu MiB written, speed %5.1f MiB/s",
(double)bytes / device_size * 100,
eta / 60, eta % 60, mbytes, mib);
fflush(stdout);
}