X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=perl%2Flib%2FSys%2FGuestfs.pm;h=7331053e23eee39b9f8e29d925b86fac21bc8df5;hb=f47dafd23186938a22d41739d9bc695c7760b912;hp=63a49259320e6d79f9ebc733a28f765a9255cab8;hpb=9222136ac9b2e404dba128b1ac74dacaa8bf1038;p=libguestfs.git

diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm
index 63a4925..7331053 100644
--- a/perl/lib/Sys/Guestfs.pm
+++ b/perl/lib/Sys/Guestfs.pm
@@ -452,6 +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>
@@ -473,6 +484,13 @@ 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
@@ -761,6 +779,13 @@ Some internal mounts are not shown.
 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>,