Richard W.M. Jones
2016-Dec-07 14:04 UTC
[Libguestfs] [PATCH 0/3] Miscellaneous improvements to supermin.
Document what each module does, using *.mli files. Remove the --dtb option, it's obsolete. Rename modules according to their purpose. Rich.
Add documentation for the modules making up supermin.
This is just documentation, there is no code change.
---
src/Makefile.am | 9 +++++++++
src/build.mli | 23 +++++++++++++++++++++++
src/chroot.mli | 25 +++++++++++++++++++++++++
src/dpkg.mli | 22 ++++++++++++++++++++++
src/ext2.mli | 29 +++++++++++++++++++++++++++++
src/ext2_initrd.mli | 31 +++++++++++++++++++++++++++++++
src/kernel.mli | 35 +++++++++++++++++++++++++++++++++++
src/pacman.mli | 22 ++++++++++++++++++++++
src/prepare.mli | 23 +++++++++++++++++++++++
src/rpm.mli | 22 ++++++++++++++++++++++
10 files changed, 241 insertions(+)
create mode 100644 src/build.mli
create mode 100644 src/chroot.mli
create mode 100644 src/dpkg.mli
create mode 100644 src/ext2.mli
create mode 100644 src/ext2_initrd.mli
create mode 100644 src/kernel.mli
create mode 100644 src/pacman.mli
create mode 100644 src/prepare.mli
create mode 100644 src/rpm.mli
diff --git a/src/Makefile.am b/src/Makefile.am
index 767117f..c0e9656 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -52,14 +52,23 @@ SOURCES = \
package_handler.ml \
package_handler.mli \
rpm.ml \
+ rpm.mli \
dpkg.ml \
+ dpkg.mli \
pacman.ml \
+ pacman.mli \
prepare.ml \
+ prepare.mli \
chroot.ml \
+ chroot.mli \
kernel.ml \
+ kernel.mli \
ext2_initrd.ml \
+ ext2_initrd.mli \
ext2.ml \
+ ext2.mli \
build.ml \
+ build.mli \
supermin.ml
# Can't use filter for this because of automake brokenness.
diff --git a/src/build.mli b/src/build.mli
new file mode 100644
index 0000000..6feb4f8
--- /dev/null
+++ b/src/build.mli
@@ -0,0 +1,23 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** Implements the [--build] subcommand. *)
+
+val build : int -> (bool * string option * Types.format * string * string
option * string * bool * int64 option * bool) -> string list -> string
-> unit
+(** [build debug (args...) inputs outputdir] performs the
+ [supermin --build] subcommand. *)
diff --git a/src/chroot.mli b/src/chroot.mli
new file mode 100644
index 0000000..5bd81c7
--- /dev/null
+++ b/src/chroot.mli
@@ -0,0 +1,25 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** Implements [--build -f chroot]. *)
+
+val build_chroot : int -> Package_handler.file list -> string ->
string option -> unit
+(** [build_chroot debug files outputdir packagelist_file] copies the
+ list of [files] into the chroot at [outputdir]. The optional
+ [packagelist] controls creation of [/packagelist] within the
+ chroot. *)
diff --git a/src/dpkg.mli b/src/dpkg.mli
new file mode 100644
index 0000000..c21327c
--- /dev/null
+++ b/src/dpkg.mli
@@ -0,0 +1,22 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** dpkg package handler
+
+ Nothing is exported. This module registers callbacks when it
+ is loaded. *)
diff --git a/src/ext2.mli b/src/ext2.mli
new file mode 100644
index 0000000..66cf5c2
--- /dev/null
+++ b/src/ext2.mli
@@ -0,0 +1,29 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** Implements [--build -f chroot]. *)
+
+val build_ext2 : int -> string -> Package_handler.file list -> string
-> string -> string -> int64 option -> string option -> unit
+(** [build_ext2 debug basedir files modpath kernel_version appliance size
+ packagelist_file] copies all the files from [basedir] plus the
+ list of [files] into a newly created ext2 filesystem called [appliance].
+
+ Kernel modules are also copied in from the local [modpath]
+ to the fixed path in the appliance [/lib/modules/<kernel_version>].
+
+ libext2fs is used to populate the ext2 filesystem. *)
diff --git a/src/ext2_initrd.mli b/src/ext2_initrd.mli
new file mode 100644
index 0000000..d03ee23
--- /dev/null
+++ b/src/ext2_initrd.mli
@@ -0,0 +1,31 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** Implements [--build -f ext2] minimal initrd which is required
+ to mount the ext2 filesystem at runtime.
+
+ See also the {!Ext2} module. *)
+
+val build_initrd : int -> string -> string -> string -> unit
+(** [build_initrd debug tmpdir modpath initrd] creates the minimal
+ initrd required to mount the ext2 filesystem at runtime.
+
+ A small, whitelisted selection of kernel modules is taken
+ from [modpath], just enough to mount the appliance.
+
+ The output is the file [initrd]. *)
diff --git a/src/kernel.mli b/src/kernel.mli
new file mode 100644
index 0000000..36b4ab7
--- /dev/null
+++ b/src/kernel.mli
@@ -0,0 +1,35 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** For [--build -f ext2] this module chooses a kernel to use
+ and either links to it or copies it.
+
+ See also the {!Ext2} module. *)
+
+val build_kernel : int -> string -> string option -> bool -> string
-> string -> string * string
+(** [build_kernel debug host_cpu dtb_wildcard copy_kernel kernel dtb]
+ chooses the kernel to use and links to it or copies it into the
+ appliance directory.
+
+ The output is written to the file [kernel].
+
+ The function returns the [kernel_version, modpath] tuple as a
+ side-effect of locating the kernel.
+
+ The [--dtb] option is also handled here, but that support is
+ now effectively obsolete and will be removed in future. *)
diff --git a/src/pacman.mli b/src/pacman.mli
new file mode 100644
index 0000000..5b9be12
--- /dev/null
+++ b/src/pacman.mli
@@ -0,0 +1,22 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** pacman package handler.
+
+ Nothing is exported. This module registers callbacks when it
+ is loaded. *)
diff --git a/src/prepare.mli b/src/prepare.mli
new file mode 100644
index 0000000..404302a
--- /dev/null
+++ b/src/prepare.mli
@@ -0,0 +1,23 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** Implements the [--prepare] subcommand. *)
+
+val prepare : int -> (bool * string option * Types.format * string * string
option * string * bool * int64 option * bool) -> string list -> string
-> unit
+(** [prepare debug (args...) inputs outputdir] performs the
+ [supermin --prepare] subcommand. *)
diff --git a/src/rpm.mli b/src/rpm.mli
new file mode 100644
index 0000000..8b55ad4
--- /dev/null
+++ b/src/rpm.mli
@@ -0,0 +1,22 @@
+(* supermin 5
+ * Copyright (C) 2009-2016 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
+ *)
+
+(** RPM package handler
+
+ Nothing is exported. This module registers callbacks when it
+ is loaded. *)
--
2.10.2
Richard W.M. Jones
2016-Dec-07 14:04 UTC
[Libguestfs] [PATCH 2/3] Remove the --dtb option and all supporting code.
It used to be necessary to specify a DTB manually back in very old
versions of qemu on armv7.
However qemu has constructed a correct DTB for a very long time and
it's almost certainly a mistake if you are using the supermin --dtb
parameter to override that. (For this reason, supermin will
intentionally give an error now if you try to use --dtb).
libguestfs stopped using this parameter in
commit af762e43424382d895d3a10aa6632adc601fdbad (2015-03-05).
---
src/build.ml | 5 ++--
src/build.mli | 2 +-
src/kernel.ml | 70 +-------------------------------------------------------
src/kernel.mli | 9 +++-----
src/prepare.ml | 2 +-
src/prepare.mli | 2 +-
src/supermin.ml | 7 ++----
src/supermin.pod | 44 +++--------------------------------
8 files changed, 14 insertions(+), 127 deletions(-)
diff --git a/src/build.ml b/src/build.ml
index 83a0d98..43aedc4 100644
--- a/src/build.ml
+++ b/src/build.ml
@@ -58,7 +58,7 @@ and string_of_file_content = function
| Excludefiles -> "excludefiles"
let rec build debug
- (copy_kernel, dtb_wildcard, format, host_cpu,
+ (copy_kernel, format, host_cpu,
packager_config, tmpdir, use_installed, size,
include_packagelist)
inputs outputdir @@ -222,11 +222,10 @@ let rec build debug
| Ext2 ->
let kernel = outputdir // "kernel"
- and dtb = outputdir // "dtb"
and appliance = outputdir // "root"
and initrd = outputdir // "initrd" in
let kernel_version, modpath - Kernel.build_kernel debug host_cpu
dtb_wildcard copy_kernel kernel dtb in
+ Kernel.build_kernel debug host_cpu copy_kernel kernel in
Ext2.build_ext2 debug basedir files modpath kernel_version appliance size
packagelist_file;
Ext2_initrd.build_initrd debug tmpdir modpath initrd
diff --git a/src/build.mli b/src/build.mli
index 6feb4f8..0f8b956 100644
--- a/src/build.mli
+++ b/src/build.mli
@@ -18,6 +18,6 @@
(** Implements the [--build] subcommand. *)
-val build : int -> (bool * string option * Types.format * string * string
option * string * bool * int64 option * bool) -> string list -> string
-> unit
+val build : int -> (bool * Types.format * string * string option * string *
bool * int64 option * bool) -> string list -> string -> unit
(** [build debug (args...) inputs outputdir] performs the
[supermin --build] subcommand. *)
diff --git a/src/kernel.ml b/src/kernel.ml
index b4e89da..5d1ae66 100644
--- a/src/kernel.ml
+++ b/src/kernel.ml
@@ -39,7 +39,7 @@ let patt_of_cpu host_cpu in
List.map (fun model -> sprintf "vmlinu?-*-%s" model) models
-let rec build_kernel debug host_cpu dtb_wildcard copy_kernel kernel dtb +let
rec build_kernel debug host_cpu copy_kernel kernel (* Locate the kernel. *)
let kernel_file, kernel_name, kernel_version, modpath try
@@ -84,13 +84,6 @@ let rec build_kernel debug host_cpu dtb_wildcard copy_kernel
kernel dtb ) else
find_kernel debug host_cpu kernel in
- (* If the user passed --dtb option, locate dtb. *)
- (match dtb_wildcard with
- | None -> ()
- | Some wildcard ->
- find_dtb debug copy_kernel kernel_name wildcard dtb
- );
-
if debug >= 1 then (
printf "supermin: kernel: kernel_version %s\n" kernel_version;
printf "supermin: kernel: modules %s\n%!" modpath;
@@ -161,67 +154,6 @@ installed, try installing a fullvirt kernel (only for
supermin use, you shouldn't boot the Xen guest with it)."
host_cpu
-and find_dtb debug copy_kernel kernel_name wildcard dtb - let dtb_file -
try
- let dtb_file = getenv "SUPERMIN_DTB" in
- if debug >= 1 then
- printf "supermin: kernel: SUPERMIN_DTB environment variable =
%s\n%!"
- dtb_file;
- dtb_file
- with Not_found ->
- (* Replace vmlinuz- with dtb- *)
- if not (string_prefix "vmlinuz-" kernel_name) &&
- not (string_prefix "vmlinuz-" kernel_name) then
- no_dtb_dir kernel_name;
- let dtb_dir - try
- List.find dir_exists (
- List.map (fun prefix ->
- prefix ^ String.sub kernel_name 8 (String.length kernel_name - 8)
- ) ["/boot/dtb-"; "/usr/lib/linux-image-"])
- with Not_found ->
- no_dtb_dir kernel_name; ""
- in
-
- let all_files = Sys.readdir dtb_dir in
- let all_files = Array.to_list all_files in
-
- let files - List.filter (fun filename -> fnmatch wildcard
filename [FNM_NOESCAPE])
- all_files in
- if files = [] then
- no_dtb dtb_dir wildcard;
-
- let dtb_name = List.hd files in
- let dtb_file = dtb_dir // dtb_name in
- if debug >= 1 then
- printf "supermin: kernel: picked dtb %s\n%!" dtb_file;
- dtb_file in
-
- copy_or_symlink_file copy_kernel dtb_file dtb
-
-and no_dtb_dir kernel_name - error "\
-failed to find a dtb (device tree) directory.
-
-I expected to take '%s' and to
-replace vmlinuz- with dtb- to form a directory.
-
-You can set SUPERMIN_KERNEL, SUPERMIN_MODULES and SUPERMIN_DTB
-to override automatic selection. See supermin(1)."
- kernel_name
-
-and no_dtb dtb_dir wildcard - error "\
-failed to find a matching device tree.
-
-I looked for a file matching '%s' in directory '%s'.
-
-You can set SUPERMIN_KERNEL, SUPERMIN_MODULES and SUPERMIN_DTB
-to override automatic selection. See supermin(1)."
- wildcard dtb_dir
-
and find_modpath debug kernel_version try
let modpath = getenv "SUPERMIN_MODULES" in
diff --git a/src/kernel.mli b/src/kernel.mli
index 36b4ab7..35a1273 100644
--- a/src/kernel.mli
+++ b/src/kernel.mli
@@ -21,15 +21,12 @@
See also the {!Ext2} module. *)
-val build_kernel : int -> string -> string option -> bool -> string
-> string -> string * string
-(** [build_kernel debug host_cpu dtb_wildcard copy_kernel kernel dtb]
+val build_kernel : int -> string -> bool -> string -> string *
string
+(** [build_kernel debug host_cpu copy_kernel kernel]
chooses the kernel to use and links to it or copies it into the
appliance directory.
The output is written to the file [kernel].
The function returns the [kernel_version, modpath] tuple as a
- side-effect of locating the kernel.
-
- The [--dtb] option is also handled here, but that support is
- now effectively obsolete and will be removed in future. *)
+ side-effect of locating the kernel. *)
diff --git a/src/prepare.ml b/src/prepare.ml
index 830b620..e8cf058 100644
--- a/src/prepare.ml
+++ b/src/prepare.ml
@@ -21,7 +21,7 @@ open Printf
open Package_handler
open Utils
-let prepare debug (copy_kernel, dtb_wildcard, format, host_cpu,
+let prepare debug (copy_kernel, format, host_cpu,
packager_config, tmpdir, use_installed, size,
include_packagelist)
inputs outputdir diff --git a/src/prepare.mli b/src/prepare.mli
index 404302a..e2d677a 100644
--- a/src/prepare.mli
+++ b/src/prepare.mli
@@ -18,6 +18,6 @@
(** Implements the [--prepare] subcommand. *)
-val prepare : int -> (bool * string option * Types.format * string * string
option * string * bool * int64 option * bool) -> string list -> string
-> unit
+val prepare : int -> (bool * Types.format * string * string option * string
* bool * int64 option * bool) -> string list -> string -> unit
(** [prepare debug (args...) inputs outputdir] performs the
[supermin --prepare] subcommand. *)
diff --git a/src/supermin.ml b/src/supermin.ml
index a09b498..6dd75b2 100644
--- a/src/supermin.ml
+++ b/src/supermin.ml
@@ -86,7 +86,6 @@ let main ()
let copy_kernel = ref false in
let debug = ref 0 in
- let dtb_wildcard = ref "" in
let format = ref None in
let host_cpu = ref Config.host_cpu in
let if_newer = ref false in
@@ -134,7 +133,6 @@ or upgrade to libguestfs >= 1.26.
let argspec = Arg.align [
"--build", Arg.Unit set_build_mode, " Build a full
appliance";
"--copy-kernel", Arg.Set copy_kernel, " Copy kernel
instead of symlinking";
- "--dtb", Arg.Set_string dtb_wildcard, "WILDCARD Find
device tree matching wildcard";
"-f", Arg.String set_format, "chroot|ext2 Set
output format";
"--format", Arg.String set_format, ditto;
"--host-cpu", Arg.Set_string host_cpu, "ARCH Set host CPU
architecture";
@@ -160,7 +158,6 @@ or upgrade to libguestfs >= 1.26.
let copy_kernel = !copy_kernel in
let debug = !debug in
- let dtb_wildcard = match !dtb_wildcard with "" -> None | s
-> Some s in
let host_cpu = !host_cpu in
let if_newer = !if_newer in
let inputs = List.rev !inputs in
@@ -191,7 +188,7 @@ or upgrade to libguestfs >= 1.26.
else outputdir in
debug, mode, if_newer, inputs, lockfile, outputdir,
- (copy_kernel, dtb_wildcard, format, host_cpu,
+ (copy_kernel, format, host_cpu,
packager_config, tmpdir, use_installed, size,
include_packagelist) in
@@ -201,7 +198,7 @@ or upgrade to libguestfs >= 1.26.
* This fails with an error if one could not be located.
*)
let () - let (_, _, _, _, packager_config, tmpdir, _, _, _) = args in
+ let (_, _, _, packager_config, tmpdir, _, _, _) = args in
let settings = {
debug = debug;
tmpdir = tmpdir;
diff --git a/src/supermin.pod b/src/supermin.pod
index 8c9aca7..4581201 100644
--- a/src/supermin.pod
+++ b/src/supermin.pod
@@ -143,40 +143,6 @@ the kernel in F</boot>.
This is fractionally slower, but is necessary if you want to change
the permissions or SELinux label on the kernel or device tree.
-=item B<--dtb> WILDCARD
-
-(I<--build> mode only)
-
-If specified, search for a device tree which is compatible with the
-selected kernel and the name of which matches the given wildcard. You
-can use a wildcard such as C<vexpress-*a9*.dtb> which would match
-F<vexpress-v2p-ca9.dtb>.
-
-Notes:
-
-=over 4
-
-=item *
-
-You may need to quote the wildcard to prevent it from being expanded
-by your shell.
-
-=item *
-
-If no I<--dtb> option is given, no device tree will be looked for.
-
-=item *
-
-You only need a device tree on architectures such as ARM and PowerPC
-which use them. On other architectures, don't use this option.
-
-=item *
-
-If you use this option and no compatible device tree can be found,
-supermin will exit with an error.
-
-=back
-
=item B<-f> FORMAT
=item B<--format> FORMAT
@@ -202,15 +168,15 @@ This is called a C<chroot> because you could
literally L<chroot(1)>
into this directory afterwards, although it's a better idea to use a
container technology (LXC, etc.).
-No kernel, initrd or dtb is generated in this mode because it is
+No kernel or initrd is generated in this mode because it is
assumed that you will be running the appliance using the host kernel.
=item ext2
An ext2 filesystem disk image.
-The output kernel is written to F<OUTPUTDIR/kernel>, the device tree
-(if using) to F<OUTPUTDIR/dtb>, a small initramfs which can mount the
+The output kernel is written to F<OUTPUTDIR/kernel>,
+a small initramfs which can mount the
appliance to F<OUTPUTDIR/initrd>, and the ext2 filesystem image to
F<OUTPUTDIR/root>. (Where F<OUTPUTDIR> is specified by the
I<-o>
option).
@@ -543,10 +509,6 @@ This specifies the kernel modules directory to use.
The environment variable should point to a module directory,
eg. F</lib/modules/3.0.x86_64/>
-=item SUPERMIN_DTB
-
-Force the given device tree file to be used.
-
=item SUPERMIN_KERNEL_VERSION
On non-x86 architectures, you may need to set this environment
--
2.10.2
Richard W.M. Jones
2016-Dec-07 14:04 UTC
[Libguestfs] [PATCH 3/3] Group and rename modules according to their purpose.
The two mode modules are called Mode_prepare and Mode_build.
The two format modules are called Format_chroot and Format_ext2*.
The package handler implementations are called Ph_*.
This is entirely code motion, except that I removed three 'open'
statements in order to make the source location of some functions
clearer.
---
.gitignore | 2 +-
src/Makefile.am | 74 ++++++++++++-------------
src/{ext2init-c.c => format-ext2-init-c.c} | 0
src/{chroot.ml => format_chroot.ml} | 0
src/{chroot.mli => format_chroot.mli} | 0
src/{ext2.ml => format_ext2.ml} | 0
src/{ext2.mli => format_ext2.mli} | 0
src/{ext2init.ml => format_ext2_init.ml} | 0
src/{ext2init.mli => format_ext2_init.mli} | 0
src/{ext2_initrd.ml => format_ext2_initrd.ml} | 3 +-
src/{ext2_initrd.mli => format_ext2_initrd.mli} | 2 +-
src/{kernel.ml => format_ext2_kernel.ml} | 0
src/{kernel.mli => format_ext2_kernel.mli} | 2 +-
src/{build.ml => mode_build.ml} | 10 ++--
src/{build.mli => mode_build.mli} | 0
src/{prepare.ml => mode_prepare.ml} | 0
src/{prepare.mli => mode_prepare.mli} | 0
src/{dpkg.ml => ph_dpkg.ml} | 0
src/{dpkg.mli => ph_dpkg.mli} | 0
src/{pacman.ml => ph_pacman.ml} | 0
src/{pacman.mli => ph_pacman.mli} | 0
src/{rpm.ml => ph_rpm.ml} | 0
src/{rpm.mli => ph_rpm.mli} | 0
src/supermin.ml | 6 +-
24 files changed, 48 insertions(+), 51 deletions(-)
rename src/{ext2init-c.c => format-ext2-init-c.c} (100%)
rename src/{chroot.ml => format_chroot.ml} (100%)
rename src/{chroot.mli => format_chroot.mli} (100%)
rename src/{ext2.ml => format_ext2.ml} (100%)
rename src/{ext2.mli => format_ext2.mli} (100%)
rename src/{ext2init.ml => format_ext2_init.ml} (100%)
rename src/{ext2init.mli => format_ext2_init.mli} (100%)
rename src/{ext2_initrd.ml => format_ext2_initrd.ml} (99%)
rename src/{ext2_initrd.mli => format_ext2_initrd.mli} (96%)
rename src/{kernel.ml => format_ext2_kernel.ml} (100%)
rename src/{kernel.mli => format_ext2_kernel.mli} (96%)
rename src/{build.ml => mode_build.ml} (97%)
rename src/{build.mli => mode_build.mli} (100%)
rename src/{prepare.ml => mode_prepare.ml} (100%)
rename src/{prepare.mli => mode_prepare.mli} (100%)
rename src/{dpkg.ml => ph_dpkg.ml} (100%)
rename src/{dpkg.mli => ph_dpkg.mli} (100%)
rename src/{pacman.ml => ph_pacman.ml} (100%)
rename src/{pacman.mli => ph_pacman.mli} (100%)
rename src/{rpm.ml => ph_rpm.ml} (100%)
rename src/{rpm.mli => ph_rpm.mli} (100%)
diff --git a/.gitignore b/.gitignore
index ff3680e..288950e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,7 +39,7 @@ pod2htm?.tmp
/snippet/
/src/.depend
/src/config.ml
-/src/ext2init-bin.S
+/src/format-ext2-init-bin.S
/src/supermin
/src/supermin.1
/src/supermin-link.sh
diff --git a/src/Makefile.am b/src/Makefile.am
index c0e9656..5670a0d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,9 +28,6 @@ SOURCES = \
ext2fs-c.c \
ext2fs.ml \
ext2fs.mli \
- ext2init-c.c \
- ext2init.ml \
- ext2init.mli \
fnmatch-c.c \
fnmatch.ml \
fnmatch.mli \
@@ -51,30 +48,32 @@ SOURCES = \
os_release.mli \
package_handler.ml \
package_handler.mli \
- rpm.ml \
- rpm.mli \
- dpkg.ml \
- dpkg.mli \
- pacman.ml \
- pacman.mli \
- prepare.ml \
- prepare.mli \
- chroot.ml \
- chroot.mli \
- kernel.ml \
- kernel.mli \
- ext2_initrd.ml \
- ext2_initrd.mli \
- ext2.ml \
- ext2.mli \
- build.ml \
- build.mli \
+ ph_rpm.ml \
+ ph_rpm.mli \
+ ph_dpkg.ml \
+ ph_dpkg.mli \
+ ph_pacman.ml \
+ ph_pacman.mli \
+ mode_prepare.ml \
+ mode_prepare.mli \
+ format_chroot.ml \
+ format_chroot.mli \
+ format-ext2-init-c.c \
+ format_ext2_init.ml \
+ format_ext2_init.mli \
+ format_ext2_initrd.ml \
+ format_ext2_initrd.mli \
+ format_ext2_kernel.ml \
+ format_ext2_kernel.mli \
+ format_ext2.ml \
+ format_ext2.mli \
+ mode_build.ml \
+ mode_build.mli \
supermin.ml
# Can't use filter for this because of automake brokenness.
SOURCES_ML = \
ext2fs.ml \
- ext2init.ml \
fnmatch.ml \
glob.ml \
realpath.ml \
@@ -84,20 +83,21 @@ SOURCES_ML = \
types.ml \
os_release.ml \
package_handler.ml \
- rpm.ml \
- dpkg.ml \
- pacman.ml \
- prepare.ml \
- chroot.ml \
- kernel.ml \
- ext2_initrd.ml \
- ext2.ml \
- build.ml \
+ ph_rpm.ml \
+ ph_dpkg.ml \
+ ph_pacman.ml \
+ mode_prepare.ml \
+ format_chroot.ml \
+ format_ext2_init.ml \
+ format_ext2_initrd.ml \
+ format_ext2_kernel.ml \
+ format_ext2.ml \
+ mode_build.ml \
supermin.ml
SOURCES_C = \
ext2fs-c.c \
- ext2init-c.c \
+ format-ext2-init-c.c \
fnmatch-c.c \
glob-c.c \
librpm-c.c \
@@ -132,9 +132,9 @@ OBJECTS = $(XOBJECTS)
BEST = opt
endif
-supermin_DEPENDENCIES = $(OBJECTS) ext2init-bin.o
+supermin_DEPENDENCIES = $(OBJECTS) format-ext2-init-bin.o
-supermin_LDADD = ext2init-bin.o ../lib/libgnu.a
+supermin_LDADD = format-ext2-init-bin.o ../lib/libgnu.a
supermin_LINK = \
./supermin-link.sh \
@@ -148,12 +148,12 @@ supermin_LINK = \
.ml.cmx:
$(OCAMLFIND) ocamlopt $(OCAMLFLAGS) $(OCAMLPACKAGES) -c $< -o $@
-CLEANFILES += ext2init-bin.S
+CLEANFILES += format-ext2-init-bin.S
-ext2init-bin.o: ext2init-bin.S
+format-ext2-init-bin.o: format-ext2-init-bin.S
$(CC) -o $@ -c $<
-ext2init-bin.S: ../init/init $(srcdir)/bin2s.pl
+format-ext2-init-bin.S: ../init/init $(srcdir)/bin2s.pl
strip --strip-all $<
ls -l $<
@file $< | grep -isq static || \
diff --git a/src/ext2init-c.c b/src/format-ext2-init-c.c
similarity index 100%
rename from src/ext2init-c.c
rename to src/format-ext2-init-c.c
diff --git a/src/chroot.ml b/src/format_chroot.ml
similarity index 100%
rename from src/chroot.ml
rename to src/format_chroot.ml
diff --git a/src/chroot.mli b/src/format_chroot.mli
similarity index 100%
rename from src/chroot.mli
rename to src/format_chroot.mli
diff --git a/src/ext2.ml b/src/format_ext2.ml
similarity index 100%
rename from src/ext2.ml
rename to src/format_ext2.ml
diff --git a/src/ext2.mli b/src/format_ext2.mli
similarity index 100%
rename from src/ext2.mli
rename to src/format_ext2.mli
diff --git a/src/ext2init.ml b/src/format_ext2_init.ml
similarity index 100%
rename from src/ext2init.ml
rename to src/format_ext2_init.ml
diff --git a/src/ext2init.mli b/src/format_ext2_init.mli
similarity index 100%
rename from src/ext2init.mli
rename to src/format_ext2_init.mli
diff --git a/src/ext2_initrd.ml b/src/format_ext2_initrd.ml
similarity index 99%
rename from src/ext2_initrd.ml
rename to src/format_ext2_initrd.ml
index d4a4e2f..b67bb55 100644
--- a/src/ext2_initrd.ml
+++ b/src/format_ext2_initrd.ml
@@ -21,7 +21,6 @@ open Printf
open Utils
open Ext2fs
-open Ext2init
open Fnmatch
module StringSet = Set.Make (String)
@@ -155,7 +154,7 @@ let rec build_initrd debug tmpdir modpath initrd printf
"supermin: ext2: wrote %d modules to minimal initrd\n%!"
(StringSet.cardinal !visited);
(* This is the binary blob containing the init "script". *)
- let init = binary_init () in
+ let init = Format_ext2_init.binary_init () in
let initfile = initdir // "init" in
let chan = open_out initfile in
output_string chan init;
diff --git a/src/ext2_initrd.mli b/src/format_ext2_initrd.mli
similarity index 96%
rename from src/ext2_initrd.mli
rename to src/format_ext2_initrd.mli
index d03ee23..328a75c 100644
--- a/src/ext2_initrd.mli
+++ b/src/format_ext2_initrd.mli
@@ -19,7 +19,7 @@
(** Implements [--build -f ext2] minimal initrd which is required
to mount the ext2 filesystem at runtime.
- See also the {!Ext2} module. *)
+ See also the {!Format_ext2} module. *)
val build_initrd : int -> string -> string -> string -> unit
(** [build_initrd debug tmpdir modpath initrd] creates the minimal
diff --git a/src/kernel.ml b/src/format_ext2_kernel.ml
similarity index 100%
rename from src/kernel.ml
rename to src/format_ext2_kernel.ml
diff --git a/src/kernel.mli b/src/format_ext2_kernel.mli
similarity index 96%
rename from src/kernel.mli
rename to src/format_ext2_kernel.mli
index 35a1273..32919bc 100644
--- a/src/kernel.mli
+++ b/src/format_ext2_kernel.mli
@@ -19,7 +19,7 @@
(** For [--build -f ext2] this module chooses a kernel to use
and either links to it or copies it.
- See also the {!Ext2} module. *)
+ See also the {!Format_ext2} module. *)
val build_kernel : int -> string -> bool -> string -> string *
string
(** [build_kernel debug host_cpu copy_kernel kernel]
diff --git a/src/build.ml b/src/mode_build.ml
similarity index 97%
rename from src/build.ml
rename to src/mode_build.ml
index 43aedc4..2a46dd8 100644
--- a/src/build.ml
+++ b/src/mode_build.ml
@@ -218,17 +218,17 @@ let rec build debug
(match format with
| Chroot ->
(* chroot doesn't need an external kernel or initrd *)
- Chroot.build_chroot debug files outputdir packagelist_file
+ Format_chroot.build_chroot debug files outputdir packagelist_file
| Ext2 ->
let kernel = outputdir // "kernel"
and appliance = outputdir // "root"
and initrd = outputdir // "initrd" in
let kernel_version, modpath - Kernel.build_kernel debug host_cpu
copy_kernel kernel in
- Ext2.build_ext2 debug basedir files modpath kernel_version appliance size
- packagelist_file;
- Ext2_initrd.build_initrd debug tmpdir modpath initrd
+ Format_ext2_kernel.build_kernel debug host_cpu copy_kernel kernel in
+ Format_ext2.build_ext2 debug basedir files modpath kernel_version
+ appliance size packagelist_file;
+ Format_ext2_initrd.build_initrd debug tmpdir modpath initrd
)
and read_appliance debug basedir appliance = function
diff --git a/src/build.mli b/src/mode_build.mli
similarity index 100%
rename from src/build.mli
rename to src/mode_build.mli
diff --git a/src/prepare.ml b/src/mode_prepare.ml
similarity index 100%
rename from src/prepare.ml
rename to src/mode_prepare.ml
diff --git a/src/prepare.mli b/src/mode_prepare.mli
similarity index 100%
rename from src/prepare.mli
rename to src/mode_prepare.mli
diff --git a/src/dpkg.ml b/src/ph_dpkg.ml
similarity index 100%
rename from src/dpkg.ml
rename to src/ph_dpkg.ml
diff --git a/src/dpkg.mli b/src/ph_dpkg.mli
similarity index 100%
rename from src/dpkg.mli
rename to src/ph_dpkg.mli
diff --git a/src/pacman.ml b/src/ph_pacman.ml
similarity index 100%
rename from src/pacman.ml
rename to src/ph_pacman.ml
diff --git a/src/pacman.mli b/src/ph_pacman.mli
similarity index 100%
rename from src/pacman.mli
rename to src/ph_pacman.mli
diff --git a/src/rpm.ml b/src/ph_rpm.ml
similarity index 100%
rename from src/rpm.ml
rename to src/ph_rpm.ml
diff --git a/src/rpm.mli b/src/ph_rpm.mli
similarity index 100%
rename from src/rpm.mli
rename to src/ph_rpm.mli
diff --git a/src/supermin.ml b/src/supermin.ml
index 6dd75b2..014df88 100644
--- a/src/supermin.ml
+++ b/src/supermin.ml
@@ -21,8 +21,6 @@ open Printf
open Types
open Utils
-open Prepare
-open Build
open Package_handler
type mode = Prepare | Build
@@ -249,8 +247,8 @@ or upgrade to libguestfs >= 1.26.
ignore (Sys.command cmd));
(match mode with
- | Prepare -> prepare debug args inputs new_outputdir
- | Build -> build debug args inputs new_outputdir
+ | Prepare -> Mode_prepare.prepare debug args inputs new_outputdir
+ | Build -> Mode_build.build debug args inputs new_outputdir
);
(* Delete the old output directory if it exists. *)
--
2.10.2
Pino Toscano
2016-Dec-07 15:01 UTC
Re: [Libguestfs] [PATCH 0/3] Miscellaneous improvements to supermin.
On Wednesday, 7 December 2016 14:04:43 CET Richard W.M. Jones wrote:> Document what each module does, using *.mli files. > > Remove the --dtb option, it's obsolete. > > Rename modules according to their purpose.Generally LGTM. The only note is about the removal of --dtb: wouldn't it better to leave a stub option? It would explicitly print out it was removed, so when specified it's clearer it was not a typo but intentional functionality drop/change. -- Pino Toscano
Richard W.M. Jones
2016-Dec-07 15:04 UTC
Re: [Libguestfs] [PATCH 0/3] Miscellaneous improvements to supermin.
On Wed, Dec 07, 2016 at 04:01:50PM +0100, Pino Toscano wrote:> On Wednesday, 7 December 2016 14:04:43 CET Richard W.M. Jones wrote: > > Document what each module does, using *.mli files. > > > > Remove the --dtb option, it's obsolete. > > > > Rename modules according to their purpose. > > Generally LGTM. > > The only note is about the removal of --dtb: wouldn't it better to > leave a stub option? It would explicitly print out it was removed, > so when specified it's clearer it was not a typo but intentional > functionality drop/change.OK I'll modify this and then push. Thanks, Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top
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