[Libguestfs] [PATCH v5 NOT TO BE APPLIED 2/2] New tool: virt-p2v.

This is a graphical standalone front-end to virt-v2v which can be run on physical machines (usually linked into a ISO or PXE boot image) to convert the physical machine to a virtual machine. --- .gitignore | 4 + Makefile.am | 3 + README | 2 + configure.ac | 13 ++ fish/guestfish.pod | 1 + p2v/Makefile.am | 86 +++++++++++ p2v/gui.c | 265 ++++++++++++++++++++++++++++++++++ p2v/main.c | 324 ++++++++++++++++++++++++++++++++++++++++++ p2v/miniexpect.c | 364 +++++++++++++++++++++++++++++++++++++++++++++++ p2v/miniexpect.h | 81 +++++++++++ p2v/p2v.h | 55 ++++++++ p2v/ssh.c | 408 +++++++++++++++++++++++++++++++++++++++++++++++++++++ p2v/virt-p2v.pod | 219 ++++++++++++++++++++++++++++ po/POTFILES | 4 + src/guestfs.pod | 5 + v2v/virt-v2v.pod | 5 +- 16 files changed, 1837 insertions(+), 2 deletions(-) create mode 100644 p2v/Makefile.am create mode 100644 p2v/gui.c create mode 100644 p2v/main.c create mode 100644 p2v/miniexpect.c create mode 100644 p2v/miniexpect.h create mode 100644 p2v/p2v.h create mode 100644 p2v/ssh.c create mode 100644 p2v/virt-p2v.pod diff --git a/.gitignore b/.gitignore index 25e9358..f97318b 100644 --- a/.gitignore +++ b/.gitignore @@ -245,6 +245,7 @@ Makefile.in /html/virt-list-partitions.1.html /html/virt-ls.1.html /html/virt-make-fs.1.html +/html/virt-p2v.1.html /html/virt-rescue.1.html /html/virt-resize.1.html /html/virt-sparsify.1.html @@ -314,6 +315,9 @@ Makefile.in /ocaml/stamp-mlguestfs /ocaml/t/*.bc /ocaml/t/*.opt +/p2v/stamp-virt-p2v.pod +/p2v/virt-p2v +/p2v/virt-p2v.1 /perl/bindtests.pl /perl/blib /perl/examples/guestfs-perl.3 diff --git a/Makefile.am b/Makefile.am index 3102e0b..67b1fa8 100644 --- a/Makefile.am +++ b/Makefile.am @@ -81,6 +81,9 @@ SUBDIRS += fish # virt-tools in C. SUBDIRS += align cat diff df edit format inspector make-fs rescue +if HAVE_P2V +SUBDIRS += p2v +endif # bash-completion SUBDIRS += bash diff --git a/README b/README index 8fdc041..2d8acfd 100644 --- a/README +++ b/README @@ -176,6 +176,8 @@ The full requirements are described below. | liblzma | | O | Can be used by virt-builder for fast | | | | | uncompression of templates. | +--------------+-------------+---+-----------------------------------------+ +| gtk2 | | O | Used by virt-p2v user interface. | ++--------------+-------------+---+-----------------------------------------+ | findlib | | O | For the OCaml bindings. | +--------------+-------------+---+-----------------------------------------+ | ocaml-gettext| | O | For localizing OCaml virt-* tools. | diff --git a/configure.ac b/configure.ac index a8cd195..a27239f 100644 --- a/configure.ac +++ b/configure.ac @@ -933,6 +933,16 @@ PKG_CHECK_MODULES([LIBCONFIG], [libconfig],[ [AC_MSG_WARN([libconfig not found, some features will be disabled])]) AM_CONDITIONAL([HAVE_LIBCONFIG],[test "x$LIBCONFIG_LIBS" != "x"]) +dnl Check for gtk2 library, used by virt-p2v. +PKG_CHECK_MODULES([GTK2], [gtk+-2.0], [ + AC_SUBST([GTK2_CFLAGS]) + AC_SUBST([GTK2_LIBS]) +], + [AC_MSG_WARN([gtk2 not found, virt-p2v will be disabled])]) + +dnl Can we build virt-p2v? +AM_CONDITIONAL([HAVE_P2V], [test "x$GTK2_LIBS" != "x"]) + dnl hivex library (highly recommended) dnl This used to be a part of libguestfs, but was spun off into its dnl own separate upstream project in libguestfs 1.0.85. @@ -1645,6 +1655,7 @@ AC_CONFIG_FILES([Makefile ocaml/META ocaml/Makefile ocaml/examples/Makefile + p2v/Makefile perl/Makefile perl/Makefile.PL perl/examples/Makefile @@ -1723,6 +1734,8 @@ echo "guestfish and C-based virt tools .... yes" echo "FUSE filesystem ..................... $enable_fuse" AS_ECHO_N(["GNU gettext for i18n ................ "]) if test "x$HAVE_GNU_GETTEXT_TRUE" = "x"; then echo "yes"; else echo "no"; fi +AS_ECHO_N(["virt-p2v ............................ "]) +if test "x$HAVE_P2V_TRUE" = "x"; then echo "yes"; else echo "no"; fi AS_ECHO_N(["OCaml bindings ...................... "]) if test "x$HAVE_OCAML_TRUE" = "x"; then echo "yes"; else echo "no"; fi AS_ECHO_N(["OCaml-based virt tools .............. "]) diff --git a/fish/guestfish.pod b/fish/guestfish.pod index 5cf6ebc..cf52f86 100644 --- a/fish/guestfish.pod +++ b/fish/guestfish.pod @@ -1617,6 +1617,7 @@ L<virt-list-filesystems(1)>, L<virt-list-partitions(1)>, L<virt-ls(1)>, L<virt-make-fs(1)>, +L<virt-p2v(1)>, L<virt-rescue(1)>, L<virt-resize(1)>, L<virt-sparsify(1)>, diff --git a/p2v/Makefile.am b/p2v/Makefile.am new file mode 100644 index 0000000..3f25e8c --- /dev/null +++ b/p2v/Makefile.am @@ -0,0 +1,86 @@ +# libguestfs virt-p2v +# Copyright (C) 2009-2014 Red Hat Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +include $(top_srcdir)/subdir-rules.mk + +EXTRA_DIST = \ + virt-p2v.pod + +CLEANFILES = stamp-virt-p2v.pod + +# Although virt-p2v is a regular binary, it is not usually installed +# since it only functions when contained in an ISO or PXE image which +# is used to boot the physical machine (since otherwise virt-p2v would +# not be able to get a consistent snapshot of the physical disks). +noinst_PROGRAMS = virt-p2v + +# Note that miniexpect comes from here: +# http://git.annexia.org/?p=miniexpect.git;a=summary +virt_p2v_SOURCES = \ + gui.c \ + main.c \ + miniexpect.c \ + miniexpect.h \ + p2v.h \ + ssh.c + +virt_p2v_CPPFLAGS = \ + -DLOCALEBASEDIR=\""$(datadir)/locale"\" \ + -I$(top_srcdir)/src -I$(top_builddir)/src \ + -I$(srcdir)/../gnulib/lib -I../gnulib/lib + +virt_p2v_CFLAGS = \ + -pthread \ + $(WARN_CFLAGS) $(WERROR_CFLAGS) \ + $(PCRE_CFLAGS) \ + $(LIBXML2_CFLAGS) \ + $(GTK2_CFLAGS) + +virt_p2v_LDADD = \ + $(PCRE_LIBS) \ + $(LIBXML2_LIBS) \ + $(GTK2_LIBS) \ + $(top_builddir)/src/libutils.la \ + ../gnulib/lib/libgnu.la + +# Manual pages and HTML files for the website. +man_MANS = virt-p2v.1 + +noinst_DATA = \ + $(top_builddir)/html/virt-p2v.1.html + +virt-p2v.1 $(top_builddir)/html/virt-p2v.1.html: stamp-virt-p2v.pod + +stamp-virt-p2v.pod: virt-p2v.pod + $(PODWRAPPER) \ + --man virt-p2v.1 \ + --html $(top_builddir)/html/virt-p2v.1.html \ + --license GPLv2+ \ + $< + touch $@ + +# Tests. + +TESTS_ENVIRONMENT = $(top_builddir)/run --test + +#if ENABLE_APPLIANCE +#TESTS = \ +# test-virt-p2v.sh +#endif ENABLE_APPLIANCE +# +#check-valgrind: +# $(MAKE) VG="$(top_builddir)/run @VG@" check diff --git a/p2v/gui.c b/p2v/gui.c new file mode 100644 index 0000000..44deb7a --- /dev/null +++ b/p2v/gui.c @@ -0,0 +1,265 @@ +/* virt-p2v + * Copyright (C) 2009-2014 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <unistd.h> +#include <getopt.h> +#include <fcntl.h> +#include <errno.h> +#include <locale.h> +#include <assert.h> +#include <libintl.h> + +#include <pthread.h> + +#pragma GCC diagnostic ignored "-Wstrict-prototypes" /* error in <gtk.h> */ +#include <gtk/gtk.h> + +#include "p2v.h" + +/* Interactive GUI configuration. */ + +static void test_connection_clicked (GtkWidget *w, gpointer data); +static void *test_connection_thread (void *data); + +static GtkWidget *server_entry, *port_entry, + *username_entry, *password_entry, *sudo_button, + *spinner_hbox, *spinner, *spinner_message, *next_button; + +void +gui_application (void) +{ + GtkWidget *dlg; + GtkWidget *intro, *table; + GtkWidget *server_label; + GtkWidget *port_label; + GtkWidget *username_label; + GtkWidget *password_label; + GtkWidget *test_hbox, *test; + char port_str[64]; + + /* Note that gtk_init etc have already been called in main(). */ + + dlg = gtk_dialog_new (); + gtk_window_set_title (GTK_WINDOW (dlg), program_name); + + /* The main dialog area. */ + intro = gtk_label_new (NULL); + gtk_label_set_line_wrap (GTK_LABEL (intro), TRUE); + gtk_label_set_text (GTK_LABEL (intro), + _("Connect to a virt-v2v conversion server over SSH:")); + gtk_misc_set_padding (GTK_MISC (intro), 10, 10); + + table = gtk_table_new (5, 2, FALSE); + server_label = gtk_label_new (_("Conversion server:")); + gtk_misc_set_alignment (GTK_MISC (server_label), 1., 0.5); + gtk_table_attach (GTK_TABLE (table), server_label, + 0, 1, 0, 1, GTK_FILL, GTK_FILL, 4, 4); + server_entry = gtk_entry_new (); + if (server != NULL) + gtk_entry_set_text (GTK_ENTRY (server_entry), server); + gtk_table_attach (GTK_TABLE (table), server_entry, + 1, 2, 0, 1, GTK_FILL, GTK_FILL, 4, 4); + + port_label = gtk_label_new (_("SSH port:")); + gtk_misc_set_alignment (GTK_MISC (port_label), 1., 0.5); + gtk_table_attach (GTK_TABLE (table), port_label, + 0, 1, 1, 2, GTK_FILL, GTK_FILL, 4, 4); + port_entry = gtk_entry_new (); + gtk_entry_set_width_chars (GTK_ENTRY (port_entry), 6); + snprintf (port_str, sizeof port_str, "%d", port); + gtk_entry_set_text (GTK_ENTRY (port_entry), port_str); + gtk_table_attach (GTK_TABLE (table), port_entry, + 1, 2, 1, 2, GTK_FILL, GTK_FILL, 4, 4); + + username_label = gtk_label_new (_("User name:")); + gtk_misc_set_alignment (GTK_MISC (username_label), 1., 0.5); + gtk_table_attach (GTK_TABLE (table), username_label, + 0, 1, 2, 3, GTK_FILL, GTK_FILL, 4, 4); + username_entry = gtk_entry_new (); + if (username != NULL) + gtk_entry_set_text (GTK_ENTRY (username_entry), username); + else + gtk_entry_set_text (GTK_ENTRY (username_entry), "root"); + gtk_table_attach (GTK_TABLE (table), username_entry, + 1, 2, 2, 3, GTK_FILL, GTK_FILL, 4, 4); + + password_label = gtk_label_new (_("Password:")); + gtk_misc_set_alignment (GTK_MISC (password_label), 1., 0.5); + gtk_table_attach (GTK_TABLE (table), password_label, + 0, 1, 3, 4, GTK_FILL, GTK_FILL, 4, 4); + password_entry = gtk_entry_new (); + gtk_entry_set_visibility (GTK_ENTRY (password_entry), FALSE); +#ifdef GTK_INPUT_PURPOSE_PASSWORD + gtk_entry_set_input_purpose (GTK_ENTRY (password_entry), + GTK_INPUT_PURPOSE_PASSWORD); +#endif + if (password != NULL) + gtk_entry_set_text (GTK_ENTRY (password_entry), password); + gtk_table_attach (GTK_TABLE (table), password_entry, + 1, 2, 3, 4, GTK_FILL, GTK_FILL, 4, 4); + + sudo_button = + gtk_check_button_new_with_label (_("Use sudo when running virt-v2v")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (sudo_button), sudo); + gtk_table_attach (GTK_TABLE (table), sudo_button, + 1, 2, 4, 5, GTK_FILL, GTK_FILL, 4, 4); + + test_hbox = gtk_hbox_new (FALSE, 0); + test = gtk_button_new_with_label (_("Test connection")); + gtk_box_pack_start (GTK_BOX (test_hbox), test, TRUE, FALSE, 0); + + spinner_hbox = gtk_hbox_new (FALSE, 10); + spinner = gtk_spinner_new (); + gtk_box_pack_start (GTK_BOX (spinner_hbox), spinner, FALSE, FALSE, 0); + spinner_message = gtk_label_new (NULL); + gtk_label_set_line_wrap (GTK_LABEL (spinner_message), TRUE); + gtk_misc_set_padding (GTK_MISC (spinner_message), 10, 10); + gtk_box_pack_start (GTK_BOX (spinner_hbox), spinner_message, TRUE, TRUE, 0); + + gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), + intro, TRUE, TRUE, 0); + gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), + table, TRUE, TRUE, 0); + gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), + test_hbox, FALSE, FALSE, 0); + gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), + spinner_hbox, TRUE, TRUE, 0); + + /* Buttons. */ + gtk_dialog_add_buttons (GTK_DIALOG (dlg), + _("Configure network ..."), 1, + _("About ..."), 2, + _("Next ..."), 3, + NULL); + + next_button = gtk_dialog_get_widget_for_response (GTK_DIALOG (dlg), 3); + gtk_widget_set_sensitive (next_button, FALSE); + + /* Signals. */ + g_signal_connect_swapped (G_OBJECT (dlg), "destroy", + G_CALLBACK (gtk_main_quit), NULL); + g_signal_connect (G_OBJECT (test), "clicked", + G_CALLBACK (test_connection_clicked), NULL); + + /* Show everything except the spinner. */ + gtk_widget_show_all (dlg); + gtk_widget_hide_all (spinner_hbox); + + gtk_window_set_resizable (GTK_WINDOW (dlg), FALSE); + + gtk_main (); + gdk_threads_leave (); +} + +static void +test_connection_clicked (GtkWidget *w, gpointer data) +{ + const gchar *port_str; + size_t errors = 0; + int err; + pthread_t tid; + pthread_attr_t attr; + + gtk_label_set_text (GTK_LABEL (spinner_message), ""); + gtk_widget_show_all (spinner_hbox); + + /* Get the fields from the various widgets. */ + free (server); + server = strdup (gtk_entry_get_text (GTK_ENTRY (server_entry))); + if (STREQ (server, "")) { + gtk_label_set_text (GTK_LABEL (spinner_message), + _("error: No conversion server given.")); + errors++; + } + port_str = gtk_entry_get_text (GTK_ENTRY (port_entry)); + if (sscanf (port_str, "%d", &port) != 1 || port <= 0 || port >= 65536) { + gtk_label_set_text (GTK_LABEL (spinner_message), + _("error: Invalid port number. If in doubt, use \"22\".")); + errors++; + } + free (username); + username = strdup (gtk_entry_get_text (GTK_ENTRY (username_entry))); + if (STREQ (username, "")) { + gtk_label_set_text (GTK_LABEL (spinner_message), + _("error: No user name. If in doubt, use \"root\".")); + errors++; + } + free (password); + password = strdup (gtk_entry_get_text (GTK_ENTRY (password_entry))); + + if (errors) + return; + + /* No errors so far, so test the connection in a background thread. */ + pthread_attr_init (&attr); + pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); + err = pthread_create (&tid, &attr, test_connection_thread, NULL); + if (err != 0) { + fprintf (stderr, "pthread_create: %s\n", strerror (err)); + exit (EXIT_FAILURE); + } + pthread_attr_destroy (&attr); +} + +/* Run test_connection (in a detached background thread). Once it + * finishes stop the spinner and set the spinner message + * appropriately. If the test is successful then we enable the "Next" + * button. + */ +static void * +test_connection_thread (void *data) +{ + int r; + + gdk_threads_enter (); + gtk_label_set_text (GTK_LABEL (spinner_message), + _("Testing the connection to the conversion server ...")); + gtk_spinner_start (GTK_SPINNER (spinner)); + gdk_threads_leave (); + r = test_connection (); + gdk_threads_enter (); + gtk_spinner_stop (GTK_SPINNER (spinner)); + + if (r == -1) { + /* Error testing the connection. */ + const char *err = get_ssh_error (); + + gtk_label_set_text (GTK_LABEL (spinner_message), err); + /* Disable the Next button. */ + gtk_widget_set_sensitive (next_button, FALSE); + } + else { + /* Connection is good. */ + gtk_label_set_text (GTK_LABEL (spinner_message), + _("Connected to conversion server.\n" + "Press the \"Next\" button to configure the conversion process.")); + /* Enable the Next button. */ + gtk_widget_set_sensitive (next_button, TRUE); + gtk_widget_grab_focus (next_button); + } + gdk_threads_leave (); + + /* Thread is detached anyway, so no one is waiting for the status. */ + return NULL; +} diff --git a/p2v/main.c b/p2v/main.c new file mode 100644 index 0000000..f157995 --- /dev/null +++ b/p2v/main.c @@ -0,0 +1,324 @@ +/* virt-p2v + * Copyright (C) 2009-2014 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <unistd.h> +#include <getopt.h> +#include <fcntl.h> +#include <errno.h> +#include <locale.h> +#include <assert.h> +#include <libintl.h> + +#pragma GCC diagnostic ignored "-Wstrict-prototypes" /* error in <gtk.h> */ +#include <gtk/gtk.h> + +#include "p2v.h" + +int verbose; +char *server; +int port = 22; +char *username; +char *password; +int sudo; +char *guestname; +int vcpus; +uint64_t memory; + +static char *read_cmdline (void); +static void kernel_configuration (const char *cmdline); + +enum { HELP_OPTION = CHAR_MAX + 1 }; +static const char *options = "Vv"; +static const struct option long_options[] = { + { "help", 0, 0, HELP_OPTION }, + { "cmdline", 1, 0, 0 }, + { "long-options", 0, 0, 0 }, + { "verbose", 0, 0, 'v' }, + { "version", 0, 0, 'V' }, + { 0, 0, 0, 0 } +}; + +static void __attribute__((noreturn)) +usage (int status) +{ + if (status != EXIT_SUCCESS) + fprintf (stderr, _("Try `%s --help' for more information.\n"), + program_name); + else { + fprintf (stdout, + _("%s: Convert a physical machine to use KVM\n" + "Copyright (C) 2009-2014 Red Hat Inc.\n" + "Usage:\n" + " %s [--options]\n" + "Options:\n" + " --help Display brief help\n" + " --cmdline=CMDLINE Used to debug command line parsing\n" + " -v|--verbose Verbose messages\n" + " -V|--version Display version and exit\n" + "For more information, see the manpage %s(1).\n"), + program_name, program_name, program_name); + } + exit (status); +} + +/* XXX Copied from fish/options.c. */ +static void +display_long_options (const struct option *long_options) +{ + while (long_options->name) { + if (STRNEQ (long_options->name, "long-options")) + printf ("--%s\n", long_options->name); + long_options++; + } + exit (EXIT_SUCCESS); +} + +int +main (int argc, char *argv[]) +{ + gboolean gui_possible; + int c; + int option_index; + char *cmdline = NULL; + + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEBASEDIR); + textdomain (PACKAGE); + + gdk_threads_init (); + gdk_threads_enter (); + gui_possible = gtk_init_check (&argc, &argv); + + for (;;) { + c = getopt_long (argc, argv, options, long_options, &option_index); + if (c == -1) break; + + switch (c) { + case 0: /* options which are long only */ + if (STREQ (long_options[option_index].name, "long-options")) { + display_long_options (long_options); + } + else if (STREQ (long_options[option_index].name, "cmdline")) { + cmdline = strdup (optarg); + } + else { + fprintf (stderr, _("%s: unknown long option: %s (%d)\n"), + program_name, long_options[option_index].name, option_index); + exit (EXIT_FAILURE); + } + break; + + case 'v': + verbose = 1; + break; + + case 'V': + printf ("%s %s\n", program_name, PACKAGE_VERSION); + exit (EXIT_SUCCESS); + + case HELP_OPTION: + usage (EXIT_SUCCESS); + + default: + usage (EXIT_FAILURE); + } + } + + if (optind != argc) { + fprintf (stderr, _("%s: unused arguments on the command line\n"), + program_name); + usage (EXIT_FAILURE); + } + + /* If /proc/cmdline exists and contains "p2v.server=" then we enable + * non-interactive configuration. + * If /proc/cmdline contains p2v.debug then we enable verbose mode + * even for interactive configuration. + */ + if (cmdline == NULL) + cmdline = read_cmdline (); + if (cmdline == NULL) + goto gui; + + if (strstr (cmdline, "p2v.debug")) + verbose = 1; + + if (strstr (cmdline, "p2v.server=")) + kernel_configuration (cmdline); + else { + gui: + if (!gui_possible) + /* Gtk has already printed an error. */ + exit (EXIT_FAILURE); + gui_application (); + } + + free (cmdline); + + exit (EXIT_SUCCESS); +} + +/* Read /proc/cmdline. */ +static char * +read_cmdline (void) +{ + int fd; + size_t len = 0; + ssize_t n; + char buf[256]; + char *r = NULL, *newr; + + fd = open ("/proc/cmdline", O_RDONLY|O_CLOEXEC); + if (fd == -1) { + perror ("/proc/cmdline"); + return NULL; + } + + for (;;) { + n = read (fd, buf, sizeof buf); + if (n == -1) { + perror ("read"); + free (r); + close (fd); + return NULL; + } + if (n == 0) + break; + newr = realloc (r, len + n + 1); /* + 1 is for terminating NUL */ + if (newr == NULL) { + perror ("realloc"); + free (r); + close (fd); + return NULL; + } + r = newr; + memcpy (&r[len], buf, n); + len += n; + } + + if (r) + r[len] = '\0'; + + if (close (fd) == -1) { + perror ("close"); + free (r); + return NULL; + } + + return r; +} + +/* Kernel-driven configuration, non-interactive. */ +static void +kernel_configuration (const char *cmdline) +{ + const char *r; + size_t len; + + r = strstr (cmdline, "p2v.server="); + assert (r); /* checked by caller */ + r += 5+6; + len = strcspn (r, " "); + server = strndup (r, len); + + r = strstr (cmdline, "p2v.port="); + if (r) { + r += 5+4; + if (sscanf (r, "%d", &port) != 1) { + fprintf (stderr, "%s: cannot parse p2v.port from kernel command line", + program_name); + exit (EXIT_FAILURE); + } + } + + r = strstr (cmdline, "p2v.username="); + if (r) { + r += 5+8; + len = strcspn (r, " "); + username = strndup (r, len); + } + + r = strstr (cmdline, "p2v.password="); + if (r) { + r += 5+8; + len = strcspn (r, " "); + password = strndup (r, len); + } + + r = strstr (cmdline, "p2v.sudo"); + if (r) + sudo = 1; + + /* We should now be able to connect and interrogate virt-v2v + * on the conversion server. + */ + if (test_connection () == -1) { + const char *err = get_ssh_error (); + + fprintf (stderr, "%s: error opening control connection to %s:%d: %s\n", + program_name, server, port, err); + exit (EXIT_FAILURE); + } + + r = strstr (cmdline, "p2v.name"); + if (r) { + r += 5+4; + len = strcspn (r, " "); + guestname = strndup (r, len); + } + + r = strstr (cmdline, "p2v.vcpus"); + if (r) { + r += 5+5; + if (sscanf (r, "%d", &vcpus) != 1) { + fprintf (stderr, "%s: cannot parse p2v.vcpus from kernel command line\n", + program_name); + exit (EXIT_FAILURE); + } + } + + r = strstr (cmdline, "p2v.memory"); + if (r) { + char mem_code[2]; + + r += 5+6; + if (sscanf (r, "%" SCNu64 "%c", &memory, mem_code) != 1) { + fprintf (stderr, "%s: cannot parse p2v.memory from kernel command line\n", + program_name); + exit (EXIT_FAILURE); + } + memory *= 1024; + if (mem_code[0] == 'M' || mem_code[0] == 'G') + memory *= 1024; + if (mem_code[0] == 'G') + memory *= 1024; + if (mem_code[0] != 'M' && mem_code[0] != 'G') { + fprintf (stderr, "%s: p2v.memory on kernel command line must be followed by 'G' or 'M'\n", + program_name); + exit (EXIT_FAILURE); + } + } + + +} diff --git a/p2v/miniexpect.c b/p2v/miniexpect.c new file mode 100644 index 0000000..7f02584 --- /dev/null +++ b/p2v/miniexpect.c @@ -0,0 +1,364 @@ +/* miniexpect + * Copyright (C) 2014 Red Hat Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <fcntl.h> +#include <unistd.h> +#include <poll.h> +#include <errno.h> +#include <termios.h> +#include <time.h> +#include <assert.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <sys/time.h> + +#include <pcre.h> + +#include "miniexpect.h" + +#define DEBUG 0 + +static mexp_h * +create_handle (void) +{ + mexp_h *h = malloc (sizeof *h); + if (h == NULL) + return NULL; + + /* Initialize the fields to default values. */ + h->fd = -1; + h->pid = 0; + h->timeout = 60000; + h->read_size = 1024; + h->pcre_error = 0; + h->buffer = NULL; + h->len = h->alloc = 0; + h->user1 = h->user2 = h->user3 = NULL; + + return h; +} + +static void +clear_buffer (mexp_h *h) +{ + free (h->buffer); + h->buffer = NULL; + h->alloc = h->len = 0; +} + +int +mexp_close (mexp_h *h) +{ + int status = 0; + + free (h->buffer); + + if (h->fd >= 0) + close (h->fd); + if (h->pid > 0) { + if (waitpid (h->pid, &status, 0) == -1) + return -1; + } + + free (h); + + return status; +} + +mexp_h * +mexp_spawnl (const char *file, const char *arg, ...) +{ + char **argv, **new_argv; + size_t i; + va_list args; + mexp_h *h; + + argv = malloc (sizeof (char *)); + if (argv == NULL) + return NULL; + argv[0] = (char *) arg; + + va_start (args, arg); + for (i = 1; arg != NULL; ++i) { + arg = va_arg (args, const char *); + new_argv = realloc (argv, sizeof (char *) * (i+1)); + if (new_argv == NULL) { + free (argv); + return NULL; + } + argv = new_argv; + argv[i] = (char *) arg; + } + + h = mexp_spawnv (file, argv); + free (argv); + return h; +} + +mexp_h * +mexp_spawnv (const char *file, char **argv) +{ + mexp_h *h; + int fd = -1; + int err; + char slave[1024]; + pid_t pid = 0; + + fd = posix_openpt (O_RDWR|O_NOCTTY); + if (fd == -1) + goto error; + + if (grantpt (fd) == -1) + goto error; + + if (unlockpt (fd) == -1) + goto error; + + /* Get the slave pty name now, but don't open it in the parent. */ + if (ptsname_r (fd, slave, sizeof slave) != 0) + goto error; + + /* Create the handle last before we fork. */ + h = create_handle (); + if (h == NULL) + goto error; + + pid = fork (); + if (pid == -1) + goto error; + + if (pid == 0) { /* Child. */ + struct termios terminal_settings; + int slave_fd; + + setsid (); + + /* Open the slave side of the pty. We must do this in the child + * after setsid so it becomes our controlling tty. + */ + slave_fd = open (slave, O_RDWR); + if (slave_fd == -1) + goto error; + + /* Set raw mode. */ + tcgetattr (slave_fd, &terminal_settings); + cfmakeraw (&terminal_settings); + tcsetattr (slave_fd, TCSANOW, &terminal_settings); + + /* Set up stdin, stdout, stderr to point to the pty. */ + dup2 (slave_fd, 0); + dup2 (slave_fd, 1); + dup2 (slave_fd, 2); + close (slave_fd); + + /* Close the master side of the pty - do this late to avoid a + * kernel bug, see sshpass source code. + */ + close (fd); + + /* Run the subprocess. */ + execvp (file, argv); + perror (file); + _exit (EXIT_FAILURE); + } + + /* Parent. */ + + h->fd = fd; + h->pid = pid; + return h; + + error: + err = errno; + if (fd >= 0) + close (fd); + if (pid > 0) + waitpid (pid, NULL, 0); + errno = err; + return NULL; +} + +enum mexp_status +mexp_expect (mexp_h *h, const mexp_regexp *regexps, int *ovector, int ovecsize) +{ + time_t start_t, now_t; + int timeout; + struct pollfd pfds[1]; + int r; + ssize_t rs; + + time (&start_t); + + /* Clear the read buffer. */ + /* XXX This is possibly incorrect because it throws away inputs that + * may not have been matched yet. A better idea is to record the + * end of the previous match and only throw that away. + */ + clear_buffer (h); + + for (;;) { + /* If we've got a timeout then work out how many seconds are left. + * Timeout == 0 is not particularly well-defined, but it probably + * means "return immediately if there's no data to be read". + */ + if (h->timeout >= 0) { + time (&now_t); + timeout = h->timeout - ((now_t - start_t) * 1000); + if (timeout < 0) + timeout = 0; + } + else + timeout = 0; + + pfds[0].fd = h->fd; + pfds[0].events = POLLIN; + pfds[0].revents = 0; + r = poll (pfds, 1, timeout); +#if DEBUG + fprintf (stderr, "DEBUG: poll returned %d\n", r); +#endif + if (r == -1) + return MEXP_ERROR; + + if (r == 0) + return MEXP_TIMEOUT; + + /* Otherwise we expect there is something to read from the file + * descriptor. + */ + if (h->alloc - h->len <= h->read_size) { + char *new_buffer; + /* +1 here allows us to store \0 after the data read */ + new_buffer = realloc (h->buffer, h->alloc + h->read_size + 1); + if (new_buffer == NULL) + return MEXP_ERROR; + h->buffer = new_buffer; + h->alloc += h->read_size; + } + rs = read (h->fd, h->buffer + h->len, h->read_size); +#if DEBUG + fprintf (stderr, "DEBUG: read returned %zd\n", rs); +#endif + if (rs == -1) { + /* Annoyingly on Linux (I'm fairly sure this is a bug) if the + * writer closes the connection, the entire pty is destroyed, + * and read returns -1 / EIO. Handle that special case here. + */ + if (errno == EIO) + return MEXP_EOF; + return MEXP_ERROR; + } + if (rs == 0) + return MEXP_EOF; + + /* We read something. */ + h->len += rs; + h->buffer[h->len] = '\0'; +#if DEBUG + fprintf (stderr, "DEBUG: read %zd bytes from pty\n", rs); + fprintf (stderr, "DEBUG: buffer content: %s\n", h->buffer); +#endif + + /* See if there is a full or partial match against any regexp. */ + if (regexps) { + size_t i; + int can_clear_buffer = 1; + + assert (h->buffer != NULL); + + for (i = 0; regexps[i].r > 0; ++i) { + int options = regexps[i].options | PCRE_PARTIAL_SOFT; + + r = pcre_exec (regexps[i].re, regexps[i].extra, + h->buffer, (int)h->len, 0, + options, + ovector, ovecsize); + h->pcre_error = r; + + if (r >= 0) { + /* A full match. */ + return regexps[i].r; + } + + else if (r == PCRE_ERROR_NOMATCH) { + /* No match at all. */ + /* (nothing here) */ + } + + else if (r == PCRE_ERROR_PARTIAL) { + /* Partial match. Keep the buffer and keep reading. */ + can_clear_buffer = 0; + } + + else { + /* An actual PCRE error. */ + return MEXP_PCRE_ERROR; + } + } + + /* If none of the regular expressions matched (not partially) + * then we can clear the buffer. This is an optimization. + */ + if (can_clear_buffer) + clear_buffer (h); + + } /* if (regexps) */ + } +} + +int +mexp_printf (mexp_h *h, const char *fs, ...) +{ + va_list args; + char *msg; + int len; + size_t n; + ssize_t r; + char *p; + + va_start (args, fs); + len = vasprintf (&msg, fs, args); + va_end (args); + + if (len < 0) + return -1; + +#if DEBUG + fprintf (stderr, "DEBUG: writing: %s\n", msg); +#endif + + n = len; + p = msg; + while (n > 0) { + r = write (h->fd, p, n); + if (r == -1) { + free (msg); + return -1; + } + n -= r; + p += r; + } + + free (msg); + return len; +} diff --git a/p2v/miniexpect.h b/p2v/miniexpect.h new file mode 100644 index 0000000..9a374b7 --- /dev/null +++ b/p2v/miniexpect.h @@ -0,0 +1,81 @@ +/* miniexpect + * Copyright (C) 2014 Red Hat Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* ** NOTE ** All API documentation is in the manual page. + * + * To read the manual page from the source directory, do: + * man ./miniexpect.3 + * If you have installed miniexpect, do: + * man 3 miniexpect + * + * The source for the manual page is miniexpect.pod. + */ + +#ifndef MINIEXPECT_H_ +#define MINIEXPECT_H_ + +#include <unistd.h> + +#include <pcre.h> + +/* This handle is created per subprocess that is spawned. */ +struct mexp_h { + int fd; + pid_t pid; + int timeout; + char *buffer; + size_t len; + size_t alloc; + size_t read_size; + int pcre_error; + void *user1; + void *user2; + void *user3; +}; +typedef struct mexp_h mexp_h; + +/* Spawn a subprocess. */ +extern mexp_h *mexp_spawnv (const char *file, char **argv); +extern mexp_h *mexp_spawnl (const char *file, const char *arg, ...); + +/* Close the handle. */ +extern int mexp_close (mexp_h *h); + +/* Expect. */ +struct mexp_regexp { + int r; + const pcre *re; + const pcre_extra *extra; + int options; +}; +typedef struct mexp_regexp mexp_regexp; + +enum mexp_status { + MEXP_EOF = 0, + MEXP_ERROR = -1, + MEXP_PCRE_ERROR = -2, + MEXP_TIMEOUT = -3, +}; + +extern int mexp_expect (mexp_h *h, const mexp_regexp *regexps, + int *ovector, int ovecsize); + +extern int mexp_printf (mexp_h *h, const char *fs, ...) + __attribute__((format(printf,2,3))); + +#endif /* MINIEXPECT_H_ */ diff --git a/p2v/p2v.h b/p2v/p2v.h new file mode 100644 index 0000000..5c314df --- /dev/null +++ b/p2v/p2v.h @@ -0,0 +1,55 @@ +/* virt-p2v + * Copyright (C) 2009-2014 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef P2V_H +#define P2V_H + +/* We don't use libguestfs directly here, and we don't link to it + * either (in fact, we don't want libguestfs on the ISO). However + * we include this just so that we can use the convenience macros in + * guestfs-internal-frontend.h. + */ +#include "guestfs.h" +#include "guestfs-internal-frontend.h" + +/* Ensure we don't use libguestfs. */ +#define guestfs_h DO_NOT_USE + +/* Configuration happens through these global variables. */ +extern int verbose; +extern char *server; +extern int port; +extern char *username; +extern char *password; +extern int sudo; +extern char *guestname; +extern int vcpus; +extern uint64_t memory; + +/* gui.c */ +extern void gui_application (void); + +/* ssh.c */ +extern int test_connection (void); +extern const char *get_ssh_error (void); + +/* virt-v2v version and features (read from remote). */ +extern int v2v_major; +extern int v2v_minor; + +#endif /* P2V_H */ diff --git a/p2v/ssh.c b/p2v/ssh.c new file mode 100644 index 0000000..2640dc2 --- /dev/null +++ b/p2v/ssh.c @@ -0,0 +1,408 @@ +/* virt-p2v + * Copyright (C) 2009-2014 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* This file handles the ssh connections to the conversion server. + * + * virt-p2v will open several connections over the lifetime of + * the conversion process. + * + * In 'test_connection', it will first open a connection (to check it + * is possible) and query virt-v2v on the server to ensure it exists, + * it is the right version, and so on. This connection is then + * closed, because in the GUI case we don't want to deal with keeping + * it alive in case the administrator has set up an autologout. + * + * Once we start conversion, we will open a control connection to send + * the libvirt configuration data and to start up virt-v2v, and we + * will open up one data connection per local hard disk. The data + * connection(s) have a reverse port forward to the local qemu-nbd + * server which is serving the content of that hard disk. The remote + * port for each data connection is assigned by ssh. See + * 'open_data_connection' and 'start_remote_conversion'. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <inttypes.h> +#include <unistd.h> +#include <errno.h> +#include <locale.h> +#include <assert.h> +#include <libintl.h> +#include <sys/types.h> +#include <sys/wait.h> + +#include "ignore-value.h" + +#include "miniexpect.h" +#include "p2v.h" + +int v2v_major; +int v2v_minor; + +static char *ssh_error; + +static void set_ssh_error (const char *fs, ...) + __attribute__((format(printf,1,2))); + +static void +set_ssh_error (const char *fs, ...) +{ + va_list args; + char *msg; + int len; + + va_start (args, fs); + len = vasprintf (&msg, fs, args); + va_end (args); + + if (len < 0) { + perror ("vasprintf"); + fprintf (stderr, "original error format string: %s\n", fs); + exit (EXIT_FAILURE); + } + + free (ssh_error); + ssh_error = msg; +} + +const char * +get_ssh_error (void) +{ + return ssh_error; +} + +static void compile_regexps (void) __attribute__((constructor)); +static void free_regexps (void) __attribute__((destructor)); + +static pcre *password_re; +static pcre *prompt_re; +static pcre *version_re; +static pcre *libguestfs_rewrite_re; + +static void +compile_regexps (void) +{ + const char *err; + int offset; + +#define COMPILE(re,pattern,options) \ + do { \ + re = pcre_compile ((pattern), (options), &err, &offset, NULL); \ + if (re == NULL) { \ + ignore_value (write (2, err, strlen (err))); \ + abort (); \ + } \ + } while (0) + + COMPILE (password_re, "assword", 0); + COMPILE (prompt_re, "[$#]", 0); + COMPILE (version_re, "virt-v2v ([1-9][0-9]*)\\.([1-9][0-9]*)\\.", 0); + COMPILE (libguestfs_rewrite_re, "libguestfs-rewrite", 0); +} + +static void +free_regexps (void) +{ + pcre_free (password_re); + pcre_free (prompt_re); + pcre_free (version_re); + pcre_free (libguestfs_rewrite_re); +} + +/* Start ssh subprocess with the standard arguments and possibly some + * optional arguments. Also handles password authentication. + */ +static mexp_h * +start_ssh (char **extra_args) +{ + size_t i, j, nr_args; + char port_str[64]; + CLEANUP_FREE /* [sic] */ const char **args = NULL; + mexp_h *h; + const int ovecsize = 12; + int ovector[ovecsize]; + + /* Create the ssh argument array. */ + nr_args = 0; + if (extra_args != NULL) { + for (i = 0; extra_args[i] != NULL; ++i) + nr_args++; + } + + nr_args += 11; + args = malloc (sizeof (char *) * nr_args); + if (args == NULL) { + perror ("malloc"); + exit (EXIT_FAILURE); + } + j = 0; + args[j++] = "ssh"; + args[j++] = "-p"; /* Port. */ + snprintf (port_str, sizeof port_str, "%d", port); + args[j++] = port_str; + args[j++] = "-l"; /* Username. */ + args[j++] = username ? username : "root"; + args[j++] = "-o"; /* Host key will always be novel. */ + args[j++] = "StrictHostKeyChecking=no"; + args[j++] = "-o"; /* Only use password authentication. */ + args[j++] = "PreferredAuthentications=keyboard-interactive,password"; + if (extra_args != NULL) { + for (i = 0; extra_args[i] != NULL; ++i) + args[j++] = extra_args[i]; + } + args[j++] = server; /* Conversion server. */ + args[j++] = NULL; + assert (j == nr_args); + + h = mexp_spawnv ("ssh", (char **) args); + if (h == NULL) + return NULL; + + if (password && strlen (password) > 0) { + /* Wait for the password prompt. */ + switch (mexp_expect (h, + (mexp_regexp[]) { + { 100, .re = password_re }, + { 0 } + }, ovector, ovecsize)) { + case 100: /* Got password prompt. */ + if (mexp_printf (h, "%s\n", password) == -1) { + set_ssh_error ("mexp_printf: %m"); + mexp_close (h); + return NULL; + } + break; + + case MEXP_EOF: + mexp_close (h); + set_ssh_error ("unexpected end of file waiting for password prompt"); + return NULL; + + case MEXP_TIMEOUT: + mexp_close (h); + set_ssh_error ("timeout waiting for password prompt"); + return NULL; + + case MEXP_ERROR: + set_ssh_error ("mexp_expect: %m"); + mexp_close (h); + return NULL; + + case MEXP_PCRE_ERROR: + set_ssh_error ("PCRE error: %d\n", h->pcre_error); + mexp_close (h); + return NULL; + } + } + + /* Wait for the prompt. */ + switch (mexp_expect (h, + (mexp_regexp[]) { + { 100, .re = password_re }, + { 101, .re = prompt_re }, + { 0 } + }, ovector, ovecsize)) { + case 100: /* Got password prompt unexpectedly. */ + if (mexp_printf (h, "%s\n", password) == -1) { + mexp_close (h); + set_ssh_error ("unexpected password prompt: probably the password supplied is wrong"); + return NULL; + } + break; + + case 101: /* Got prompt. */ + break; + + case MEXP_EOF: + mexp_close (h); + set_ssh_error ("unexpected end of file waiting for command prompt"); + return NULL; + + case MEXP_TIMEOUT: + mexp_close (h); + set_ssh_error ("timeout waiting for command prompt"); + return NULL; + + case MEXP_ERROR: + set_ssh_error ("mexp_expect: %m"); + mexp_close (h); + return NULL; + + case MEXP_PCRE_ERROR: + set_ssh_error ("PCRE error: %d\n", h->pcre_error); + mexp_close (h); + return NULL; + } + + return h; +} + +#pragma GCC diagnostic ignored "-Wsuggest-attribute=noreturn" /* WTF? */ +int +test_connection (void) +{ + mexp_h *h; + CLEANUP_FREE char *major_str = NULL, *minor_str = NULL; + int feature_libguestfs_rewrite = 0; + int status; + const int ovecsize = 12; + int ovector[ovecsize]; + + h = start_ssh (NULL); + if (h == NULL) + return -1; + + /* Send 'virt-v2v -V' command and hope we get back a version string. */ + if (mexp_printf (h, "%svirt-v2v -V\n", sudo ? "sudo " : "") == -1) { + set_ssh_error ("mexp_printf: %m"); + mexp_close (h); + return -1; + } + + switch (mexp_expect (h, + (mexp_regexp[]) { + { 100, .re = version_re }, + { 101, .re = prompt_re }, + { 0 } + }, ovector, ovecsize)) { + case 100: /* Got version string. */ + major_str = strndup (&h->buffer[ovector[2]], ovector[3]-ovector[2]); + minor_str = strndup (&h->buffer[ovector[4]], ovector[5]-ovector[4]); + sscanf (major_str, "%d", &v2v_major); + sscanf (minor_str, "%d", &v2v_minor); + fprintf (stderr, "%s: remote virt-v2v version: %d.%d\n", + program_name, v2v_major, v2v_minor); + if (v2v_major < 1 || v2v_major > 1) { + mexp_close (h); + set_ssh_error ("invalid version major (%d)", v2v_major); + return -1; + } + break; + + case 101: /* Got the prompt, but no version string. */ + mexp_close (h); + set_ssh_error ("virt-v2v is not installed on the conversion server, " + "or it might be a too old version"); + return -1; + + case MEXP_EOF: + mexp_close (h); + set_ssh_error ("unexpected end of file waiting virt-v2v -V output"); + return -1; + + case MEXP_TIMEOUT: + mexp_close (h); + set_ssh_error ("timeout waiting for virt-v2v -V output"); + return -1; + + case MEXP_ERROR: + set_ssh_error ("mexp_expect: %m"); + mexp_close (h); + return -1; + + case MEXP_PCRE_ERROR: + set_ssh_error ("PCRE error: %d\n", h->pcre_error); + mexp_close (h); + return -1; + } + + /* Get virt-v2v features. See: v2v/cmdline.ml */ + if (mexp_printf (h, "%svirt-v2v --machine-readable\n", + sudo ? "sudo " : "") == -1) { + set_ssh_error ("mexp_printf: %m"); + mexp_close (h); + return -1; + } + + switch (mexp_expect (h, + (mexp_regexp[]) { + { 100, .re = libguestfs_rewrite_re }, + { 0 } + }, ovector, ovecsize)) { + case 100: /* Got feature: libguestfs-rewrite. */ + feature_libguestfs_rewrite = 1; + break; + + case MEXP_EOF: + mexp_close (h); + set_ssh_error ("unexpected end of file waiting virt-v2v --machine-readable output"); + return -1; + + case MEXP_TIMEOUT: + mexp_close (h); + set_ssh_error ("timeout waiting virt-v2v --machine-readable output"); + return -1; + + case MEXP_ERROR: + set_ssh_error ("mexp_expect: %m"); + mexp_close (h); + return -1; + + case MEXP_PCRE_ERROR: + set_ssh_error ("PCRE error: %d\n", h->pcre_error); + mexp_close (h); + return -1; + } + + if (!feature_libguestfs_rewrite) { + mexp_close (h); + set_ssh_error ("invalid output of virt-v2v --machine-readable command"); + return -1; + } + + /* Test finished, shut down ssh. */ + if (mexp_printf (h, "exit\n") == -1) { + set_ssh_error ("mexp_printf: %m"); + mexp_close (h); + return -1; + } + + switch (mexp_expect (h, NULL, NULL, 0)) { + case MEXP_EOF: + break; + + case MEXP_TIMEOUT: + mexp_close (h); + set_ssh_error ("timeout waiting for end of ssh session"); + return -1; + + case MEXP_ERROR: + set_ssh_error ("mexp_expect: %m"); + mexp_close (h); + return -1; + + case MEXP_PCRE_ERROR: + set_ssh_error ("PCRE error: %d\n", h->pcre_error); + mexp_close (h); + return -1; + } + + status = mexp_close (h); + if (!((WIFEXITED (status) && WEXITSTATUS (status) == 0) + || (WIFSIGNALED (status) && WTERMSIG (status) == SIGHUP))) { + set_ssh_error ("unexpected close status from ssh subprocess (%d)", status); + return -1; + } + + return 0; +} diff --git a/p2v/virt-p2v.pod b/p2v/virt-p2v.pod new file mode 100644 index 0000000..0837abd --- /dev/null +++ b/p2v/virt-p2v.pod @@ -0,0 +1,219 @@ +=head1 NAME + +virt-p2v - Convert a physical machine to use KVM + +=head1 SYNOPSIS + + virt-p2v + + virt-p2v.iso + +=head1 DESCRIPTION + +Virt-p2v converts a physical machine to run virtualized on KVM, +managed by libvirt or Red Hat Enterprise Virtualisation (RHEV) version +2.2 or later. + +Normally you don't run the virt-p2v program directly. Instead you +have to boot the physical machine using the bootable CD-ROM, ISO or +PXE image. This bootable image contains the virt-p2v binary and runs +it automatically. This manual page documents both the binary and the +bootable image. + +=head1 NETWORK SETUP + +Virt-p2v runs on the physical machine which you want to convert. It +has to talk to another server called the "conversion server" which +must have L<virt-v2v(1)> installed on it. It always talks to the +conversion server over SSH: + + +-----------+ +-------------+ + | virt-p2v | | virt-v2v | + | (physical | ssh connection | (conversion | + | server) -----------------> server) | + +-----------+ +-------------+ + +The virt-v2v program on the conversion server does the actual +conversion (physical to virtual, and virtual to virtual conversions +are sufficiently similar that we use the same program to do both). + +The SSH connection is always initiated from the physical server. All +data is transferred over the SSH connection. In terms of firewall and +network configuration, you only need to ensure that the physical +server has access to a port (usually TCP port 22) on the conversion +server. (Note that the physical machine may reconnect several times +during the conversion process.) + +The conversion server does not need to be a physical machine. It +could be a virtual machine, as long as it has sufficient memory and +disk space to do the conversion, and as long as the physical machine +can connect directly to its SSH port. + +Because all of the data on the physical server's hard drive(s) has to +be copied over the network, the speed of conversion is largely +determined by the speed of the network between the two machines. + +=head1 GUI INTERACTIVE CONFIGURATION + +When you start virt-p2v, you'll see a graphical configuration dialog +that walks you through connection to the conversion server, asks for +the password, which local hard disks you want to convert, and other +things like the name of the guest to create and the number of virtual +CPUs to give it. + +=head1 KERNEL COMMAND LINE CONFIGURATION + +If you don't want to configure things using the graphical UI, an +alternative is to configure through the kernel command line. This is +especially convenient if you are converting a lot of physical machines +which are booted using PXE. + +Where exactly you set command line arguments depends on your PXE +implementation, but for pxelinux you put them in the C<APPEND> field +in the C<pxelinux.cfg> file. For example: + + DEFAULT p2v + TIMEOUT 20 + PROMPT 0 + LABEL p2v + KERNEL virt-p2v-vmlinuz + APPEND initrd=virt-p2v-initrd p2v.server=conv.example.com p2v.password=secret + +You have to set some or all of the following command line arguments: + +=over 4 + +=item B<p2v.server=SERVER> + +The name or IP address of the conversion server. + +This is always required if you are using the kernel configuration +method. If virt-p2v does not find this on the kernel command line +then it switches to the GUI (interactive) configuration method. + +=item B<p2v.port=NN> + +The SSH port number on the conversion server (default: C<22>). + +=item B<p2v.username=USERNAME> + +The SSH username that we log in as on the conversion server +(default: C<root>). + +=item B<p2v.password=PASSWORD> + +The SSH password that we use to log in to the conversion server. + +The default is to try with no password. If this fails then virt-p2v +will ask the user to type the password (probably several times during +conversion). + +Note that virt-p2v does not support authentication using key +distribution at this time. + +=item B<p2v.sudo> + +Use C<p2v.sudo> to tell virt-p2v to use L<sudo(8)> to gain root +privileges on the conversion server after logging in as a non-root +user (default: do not use sudo). + +=item B<p2v.name=GUESTNAME> + +The name of the guest that is created. The default is to try to +derive a name from the physical machine's hostname (if possible) else +use a randomly generated name. + +=item B<p2v.vcpus=NN> + +The number of virtual CPUs to give to the guest. The default is to +use the same as the number of physical CPUs. + +=item B<p2v.memory=NN(M|G)> + +The size of the guest memory. You can specify this in megabytes or +gigabytes by using (eg) C<p2v.memory=1024M> or C<p2v.memory=1G>. The +default is to use the same amount of RAM as on the physical machine. + +=item B<p2v.debug> + +Use this to enable full debugging of virt-v2v. + +If asked to diagnose a problem with virt-p2v, you should add +C<p2v.debug> to the kernel command line, and examine the log file +which is left in C</tmp> on the conversion server. + +=item B<p2v.disks=sdX,sdY,..> + +A list of physical hard disks to convert, for example: + + p2v.disks=sda,sdc + +The default is to convert all local hard disks that are found. + +=item B<p2v.removable=srX,srY,..> + +A list of removable media to convert. The default is to create +virtual removable devices for every physical removable device found. +Note that the content of removable media is never copied over. + +=item B<p2v.interfaces=em1,..> + +A list of network interfaces to convert. The default is to create +virtual network interfaces for every physical network interface found. + +=item B<ip=dhcp> + +Use DHCP for configuring the network interface (this is the default). + +=begin comment + +=item B<ip=ADDR:GATEWAY:NETMASK> + +Set up a static IPv4 network configuration. + +=end comment + +=back + +=head1 OPTIONS + +=over 4 + +=item B<--help> + +Display help. + +=item B<--cmdline=CMDLINE> + +This is used for debugging. Instead of parsing the kernel command line +from C</proc/cmdline>, parse the string parameter C<CMDLINE>. + +=item B<-v> + +=item B<--verbose> + +Enable debugging (on the conversion server). + +=item B<-V> + +=item B<--version> + +Display version number and exit. + +=back + +=head1 SEE ALSO + +L<virt-v2v(1)>, +L<qemu-nbd(1)>, +L<http://libguestfs.org/>. + +=head1 AUTHORS + +Richard W.M. Jones L<http://people.redhat.com/~rjones/> + +Matthew Booth + +=head1 COPYRIGHT + +Copyright (C) 2009-2014 Red Hat Inc. diff --git a/po/POTFILES b/po/POTFILES index b481157..9acedfb 100644 --- a/po/POTFILES +++ b/po/POTFILES @@ -247,6 +247,10 @@ mllib/tty-c.c mllib/uri-c.c ocaml/guestfs-c-actions.c ocaml/guestfs-c.c +p2v/gui.c +p2v/main.c +p2v/miniexpect.c +p2v/ssh.c perl/Guestfs.c perl/bindtests.pl perl/lib/Sys/Guestfs.pm diff --git a/src/guestfs.pod b/src/guestfs.pod index f634442..cbee273 100644 --- a/src/guestfs.pod +++ b/src/guestfs.pod @@ -4346,6 +4346,10 @@ L<virt-make-fs(1)> command and documentation. Various libraries and common code used by L<virt-resize(1)> and the other tools which are written in OCaml. +=item C<p2v> + +L<virt-p2v(1)> command and documentation. + =item C<po> Translations of simple gettext strings. @@ -4746,6 +4750,7 @@ L<virt-list-filesystems(1)>, L<virt-list-partitions(1)>, L<virt-ls(1)>, L<virt-make-fs(1)>, +L<virt-p2v(1)>, L<virt-rescue(1)>, L<virt-resize(1)>, L<virt-sparsify(1)>, diff --git a/v2v/virt-v2v.pod b/v2v/virt-v2v.pod index 138e73b..8faf20b 100644 --- a/v2v/virt-v2v.pod +++ b/v2v/virt-v2v.pod @@ -18,8 +18,8 @@ managed by libvirt or Red Hat Enterprise Virtualisation (RHEV) version 2.2 or later. It can currently convert Red Hat Enterprise Linux and Windows guests running on Xen and VMware ESX. -There is also a companion front-end called "virt-p2v" which comes as an -ISO or CD image that can be booted on physical machines. +There is also a companion front-end called L<virt-p2v(1)> which comes +as an ISO or CD image that can be booted on physical machines. =head1 OPTIONS @@ -283,6 +283,7 @@ For other environment variables, see L<guestfs(3)/ENVIRONMENT VARIABLES>. =head1 SEE ALSO +L<virt-p2v(1)>, L<virt-df(1)>, L<virt-filesystems(1)>, L<guestfs(3)>, -- 1.8.5.3