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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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21
lib/utils_device.c
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@@ -30,6 +30,9 @@
#include <sys/ioctl.h>
#include <linux/fs.h>
#include <unistd.h>
#ifdef HAVE_SYS_SYSMACROS_H
# include <sys/sysmacros.h> /* for major, minor */
#endif
#include "internal.h"
struct device {
@@ -482,7 +485,10 @@ int device_block_adjust(struct crypt_device *cd,
if (r == -EBUSY)
log_err(cd, _("Cannot use device %s which is in use "
"(already mapped or mounted).\n"),
device->path);
device->path);
else if (r == -EACCES)
log_err(cd, _("Cannot use device %s, permission denied.\n"),
device->path);
else
log_err(cd, _("Cannot get info about device %s.\n"),
device->path);
@@ -547,3 +553,16 @@ int device_is_identical(struct device *device1, struct device *device2)
return 0;
}
int device_is_rotational(struct device *device)
{
struct stat st;
if (stat(device_path(device), &st) < 0)
return -EINVAL;
if (!S_ISBLK(st.st_mode))
return 0;
return crypt_dev_is_rotational(major(st.st_rdev), minor(st.st_rdev));
}