diff options
Diffstat (limited to 'perl/lib/Sys/Guestfs.pm')
| -rw-r--r-- | perl/lib/Sys/Guestfs.pm | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm index 436f218c..9c5aa183 100644 --- a/perl/lib/Sys/Guestfs.pm +++ b/perl/lib/Sys/Guestfs.pm @@ -115,7 +115,7 @@ for whatever operations you want to perform (ie. read access if you just want to read the image or write access if you want to modify the image). -This is equivalent to the qemu parameter C<-drive file=filename>. +This is equivalent to the qemu parameter C<-drive file=filename,cache=off>. Note that this call checks for the existence of C<filename>. This stops you from specifying other types of drive which are supported @@ -999,6 +999,38 @@ command. Remove the single directory C<path>. +=item $h->scrub_device ($device); + +This command writes patterns over C<device> to make data retrieval +more difficult. + +It is an interface to the L<scrub(1)> program. See that +manual page for more details. + +B<This command is dangerous. Without careful use you +can easily destroy all your data>. + +=item $h->scrub_file ($file); + +This command writes patterns over a file to make data retrieval +more difficult. + +The file is I<removed> after scrubbing. + +It is an interface to the L<scrub(1)> program. See that +manual page for more details. + +=item $h->scrub_freespace ($dir); + +This command creates the directory C<dir> and then fills it +with files until the filesystem is full, and scrubs the files +as for C<$h-E<gt>scrub_file>, and deletes them. +The intention is to scrub any free space on the partition +containing C<dir>. + +It is an interface to the L<scrub(1)> program. See that +manual page for more details. + =item $h->set_append ($append); This function is used to add additional options to the @@ -1365,6 +1397,8 @@ How many blocks are zeroed isn't specified (but it's I<not> enough to securely wipe the device). It should be sufficient to remove any partition tables, filesystem superblocks and so on. +See also: C<$h-E<gt>scrub_device>. + =item $h->zerofree ($device); This runs the I<zerofree> program on C<device>. This program |