printf ("%-20s %s\n", "vgs", "list the LVM volume groups (VGs)");
printf ("%-20s %s\n", "vgs-full", "list the LVM volume groups (VGs)");
printf ("%-20s %s\n", "write-file", "create a file");
+ printf ("%-20s %s\n", "zero", "write zeroes to the device");
printf (" Use -h <cmd> / help <cmd> to show detailed help for a command.\n");
}
pod2text ("get-e2uuid - get the ext2/3/4 filesystem UUID", " get-e2uuid <device>\n\nThis returns the ext2/3/4 filesystem UUID of the filesystem on\nC<device>.");
else
if (strcasecmp (cmd, "fsck") == 0)
- pod2text ("fsck - run the filesystem checker", " fsck <fstype> <device>\n\nThis runs the filesystem checker (fsck) on C<device> which\nshould have filesystem type C<fstype>.\n\nThe returned integer is the status. See L<fsck(8)> for the\nlist of status codes from C<fsck>, and note that multiple\nstatus codes can be summed together.\n\nIt is entirely equivalent to running C<fsck -a -t fstype device>.\nNote that checking or repairing NTFS volumes is not supported\n(by linux-ntfs).");
+ pod2text ("fsck - run the filesystem checker", " fsck <fstype> <device>\n\nThis runs the filesystem checker (fsck) on C<device> which\nshould have filesystem type C<fstype>.\n\nThe returned integer is the status. See L<fsck(8)> for the\nlist of status codes from C<fsck>.\n\nNotes:\n\n=over 4\n\n=item *\n\nMultiple status codes can be summed together.\n\n=item *\n\nA non-zero return code can mean \"success\", for example if\nerrors have been corrected on the filesystem.\n\n=item *\n\nChecking or repairing NTFS volumes is not supported\n(by linux-ntfs).\n\n=back\n\nThis command is entirely equivalent to running C<fsck -a -t fstype device>.");
+ else
+ if (strcasecmp (cmd, "zero") == 0)
+ pod2text ("zero - write zeroes to the device", " zero <device>\n\nThis command writes zeroes over the first few blocks of C<device>.\n\nHow many blocks are zeroed isn't specified (but it's I<not> enough\nto securely wipe the device). It should be sufficient to remove\nany partition tables, filesystem superblocks and so on.");
else
display_builtin_command (cmd);
}
return 0;
}
+static int run_zero (const char *cmd, int argc, char *argv[])
+{
+ int r;
+ const char *device;
+ if (argc != 1) {
+ fprintf (stderr, "%s should have 1 parameter(s)\n", cmd);
+ fprintf (stderr, "type 'help %s' for help on %s\n", cmd, cmd);
+ return -1;
+ }
+ device = argv[0];
+ r = guestfs_zero (g, device);
+ return r;
+}
+
int run_action (const char *cmd, int argc, char *argv[])
{
if (strcasecmp (cmd, "launch") == 0 || strcasecmp (cmd, "run") == 0)
if (strcasecmp (cmd, "fsck") == 0)
return run_fsck (cmd, argc, argv);
else
+ if (strcasecmp (cmd, "zero") == 0)
+ return run_zero (cmd, argc, argv);
+ else
{
fprintf (stderr, "%s: unknown command\n", cmd);
return -1;