X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=perl%2Flib%2FSys%2FGuestfs.pm;h=116f7163a58a9b310ad69728cc668f495fba46bb;hb=459da0831ca259fc06dacb773e5ce602bd4ac226;hp=3f00394bfc47bbdbb424c4cea33d865799f49eb0;hpb=e118c14b9552de311cbc1734e03a3226b484c1e8;p=libguestfs.git

diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm
index 3f00394..116f716 100644
--- a/perl/lib/Sys/Guestfs.pm
+++ b/perl/lib/Sys/Guestfs.pm
@@ -432,6 +432,16 @@ The first character of C<param> string must be a C<-> (dash).
 
 C<value> can be NULL.
 
+=item $h->cp ($src, $dest);
+
+This copies a file from C<src> to C<dest> where C<dest> is
+either a destination filename or destination directory.
+
+=item $h->cp_a ($src, $dest);
+
+This copies a file or directory from C<src> to C<dest>
+recursively using the C<cp -a> command.
+
 =item $result = $h->debug ($subcmd, \@extraargs);
 
 The C<$h-E<gt>debug> command exposes some internals of
@@ -442,6 +452,17 @@ There is no comprehensive help for this command.  You have
 to look at the file C<daemon/debug.c> in the libguestfs source
 to find out what you can do.
 
+=item $kmsgs = $h->dmesg ();
+
+This returns the kernel messages (C<dmesg> output) from
+the guest kernel.  This is sometimes useful for extended
+debugging of problems.
+
+Another way to get the same information is to enable
+verbose messages with C<$h-E<gt>set_verbose> or by setting
+the environment variable C<LIBGUESTFS_DEBUG=1> before
+running the program.
+
 =item $h->download ($remotefilename, $filename);
 
 Download file C<remotefilename> and save it as C<filename>
@@ -451,6 +472,25 @@ C<filename> can also be a named pipe.
 
 See also C<$h-E<gt>upload>, C<$h-E<gt>cat>.
 
+=item $h->drop_caches ($whattodrop);
+
+This instructs the guest kernel to drop its page cache,
+and/or dentries and inode caches.  The parameter C<whattodrop>
+tells the kernel what precisely to drop, see
+L<http://linux-mm.org/Drop_Caches>
+
+Setting C<whattodrop> to 3 should drop everything.
+
+This automatically calls L<sync(2)> before the operation,
+so that the maximum guest memory is freed.
+
+=item $equality = $h->equal ($file1, $file2);
+
+This compares the two files C<file1> and C<file2> and returns
+true if their content is exactly equal, or false otherwise.
+
+The external L<cmp(1)> program is used for the comparison.
+
 =item $existsflag = $h->exists ($path);
 
 This returns C<true> if and only if there is a file, directory
@@ -688,7 +728,7 @@ as necessary.  This is like the C<mkdir -p> shell command.
 =item $h->mkfs ($fstype, $device);
 
 This creates a filesystem on C<device> (usually a partition
-of LVM logical volume).  The filesystem type is C<fstype>, for
+or LVM logical volume).  The filesystem type is C<fstype>, for
 example C<ext3>.
 
 =item $h->mount ($device, $mountpoint);
@@ -734,6 +774,18 @@ the list of devices (eg. C</dev/sda1>, C</dev/VG/LV>).
 
 Some internal mounts are not shown.
 
+=item $h->mv ($src, $dest);
+
+This moves a file from C<src> to C<dest> where C<dest> is
+either a destination filename or destination directory.
+
+=item $h->ping_daemon ();
+
+This is a test probe into the guestfs daemon running inside
+the qemu subprocess.  Calling this function checks that the
+daemon responds to the ping message, without affecting the daemon
+or attached block device(s) in any other way.
+
 =item $h->pvcreate ($device);
 
 This creates an LVM physical volume on the named C<device>,