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From 7dd396af54df3f7563aa3a42b3c17547710aec67 Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Wed, 17 Aug 2022 16:47:36 +0200
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Subject: [PATCH] convert_linux: start the QEMU guest agent in a
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distro-specific way
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The current command "service <package-name> start" does not apply to
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RHEL-6; the service name ("qemu-ga") differs from the package name
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("qemu-guest-agent") there.
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Overhaul the logic -- detach the command from the package name; cover the
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RHEL, ALT, SUSE and Debian families separately. Remove the "chkconfig"
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command, as in all tested / investigated cases, it is unnecessary.
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2028764
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Message-Id: <20220817144736.18850-1-lersek@redhat.com>
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Acked-by: Richard W.M. Jones <rjones@redhat.com>
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(cherry picked from commit ad2b4f2e50950a5798a75359badb526290aa92e7)
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---
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convert/convert_linux.ml | 56 ++++++++++++++++++++++++++++------------
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1 file changed, 40 insertions(+), 16 deletions(-)
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diff --git a/convert/convert_linux.ml b/convert/convert_linux.ml
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index 2aaa438e..b8e9ad15 100644
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--- a/convert/convert_linux.ml
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+++ b/convert/convert_linux.ml
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@@ -66,6 +66,34 @@ let convert (g : G.guestfs) source inspect keep_serial_console _ =
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| _ -> None
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in
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+ let qga_svc_start_cmd family distro major =
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+ match family, distro, major with
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+ | `RHEL_family, ( "rhel" | "centos" | "scientificlinux" | "redhat-based" |
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+ "oraclelinux" ), 6 ->
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+ (* https://bugzilla.redhat.com/show_bug.cgi?id=2028764#c52 *)
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+ Some "service qemu-ga start"
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+
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+ | `RHEL_family, _, _ ->
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+ (* https://bugzilla.redhat.com/show_bug.cgi?id=2028764#c52 *)
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+ Some "systemctl start qemu-guest-agent"
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+
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+ | `ALT_family, _, _ ->
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+ (* https://bugzilla.redhat.com/show_bug.cgi?id=2028764#c45 *)
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+ Some "systemctl start qemu-guest-agent"
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+
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+ | `SUSE_family, _, _ ->
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+ (* https://bugzilla.redhat.com/show_bug.cgi?id=2028764#c51 *)
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+ None
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+
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+ | `Debian_family, _, _ ->
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+ (* https://bugzilla.redhat.com/show_bug.cgi?id=2028764#c42 *)
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+ Some "service qemu-guest-agent start"
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+
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+ | _ ->
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+ (* should never be called when "qga_pkg_of_family" returns None *)
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+ assert false
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+ in
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+
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assert (inspect.i_package_format = "rpm" || inspect.i_package_format = "deb");
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(* Fail early if i_apps is empty. Certain steps such as kernel
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@@ -615,23 +643,19 @@ let convert (g : G.guestfs) source inspect keep_serial_console _ =
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\ \ rm -f %s\n\
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fi\n" selinux_enforcing selinux_enforcing);
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- (* Start the agent now and at subsequent boots. The following
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- * commands should work on both sysvinit distros / distro versions
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- * (regardless of "/etc/rc.d/" vs. "/etc/init.d/" being the scheme
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- * in use) and systemd distros (via redirection to systemctl).
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- *
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- * On distros where the chkconfig command is redirected to
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- * systemctl, the chkconfig command is likely superfluous. That's
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- * because on systemd distros, the QGA package comes with such
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- * runtime dependencies / triggers that the presence of the
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- * virtio-serial port named "org.qemu.guest_agent.0" automatically
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- * starts the agent during (second and later) boots. However, even
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- * on such distros, the chkconfig command should do no harm.
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+ (* On all the distro families covered by "qga_pkg_of_family" and
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+ * "qga_svc_start_cmd", the QEMU guest agent service is always
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+ * enabled by package installation for *subsequent* boots. Package
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+ * installation may or may not enable the service for the current
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+ * (i.e., first) boot, however, so try that here manually.
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*)
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- fbs "start qga"
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- (sprintf "#!/bin/sh\n\
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- service %s start\n\
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- chkconfig %s on\n" qga_pkg qga_pkg)
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+ match qga_svc_start_cmd family inspect.i_distro inspect.i_major_version
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+ with
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+ | None -> ()
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+ | Some start_cmd ->
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+ fbs "start qga"
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+ (sprintf "#!/bin/sh\n\
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+ %s\n" start_cmd)
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with
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| Guest_packages.Unknown_package_manager msg
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| Guest_packages.Unimplemented_package_manager msg ->
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