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authorRichard W.M. Jones <rjones@redhat.com>2010-12-19 21:53:09 +0000
committerRichard W.M. Jones <rjones@redhat.com>2010-12-19 21:53:09 +0000
commitd2400da92e5e2cc7fd5e33e61220a33214d5241c (patch)
tree4dcd4b4d63eb91bfc0b5700bae0104e827864f47 /HACKING
parent84fbe21855b5b304413075fecb444135397591e6 (diff)
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docs: Obsolete HACKING file, move content into guestfs(3) man page.
Add a new section called "EXTENDING LIBGUESTFS" to the guestfs manual page which contains all the information previously in "HACKING".
Diffstat (limited to 'HACKING')
-rw-r--r--HACKING260
1 files changed, 2 insertions, 258 deletions
diff --git a/HACKING b/HACKING
index 1121deb3..c1888dfe 100644
--- a/HACKING
+++ b/HACKING
@@ -1,258 +1,2 @@
-PLEASE LOOK AT THE TOP OF EACH FILE BEFORE EDITING TO SEE WHETHER IT
-IS AUTOMATICALLY GENERATED OR NOT.
-
-Adding a new action
-----------------------------------------------------------------------
-
-All action functions are generated automatically, so there are only
-two files you need to edit:
-
-(1) generator/generator_actions.ml: Add your new action, parameters,
-description, etc. to the big list at the top of this file.
-
-(2) Edit/create a C file in daemon/ subdirectory which implements your
-'do_action' function. Take a look at one of the numerous examples
-there.
-
-Formatting
-----------------------------------------------------------------------
-
-Try to use GNU / Emacs default formatting, following the convention
-used elsewhere in the source.
-
-Please make sure that the code compiles without warnings.
-
-Please test any changes.
-
-Useful targets:
- make syntax-check Checks the syntax of the C code.
- make check Runs the test suite.
-
-Enable warnings, and fix any you find:
- ./configure --enable-gcc-warnings
-
-Code indentation
-----------------------------------------------------------------------
-Our C source code generally adheres to some basic code-formatting
-conventions. The existing code base is not totally consistent on this
-front, but we do prefer that contributed code be formatted similarly.
-In short, use spaces-not-TABs for indentation, use 2 spaces for each
-indentation level, and other than that, follow the K&R style.
-
-If you use Emacs, add the following to one of one of your start-up files
-(e.g., ~/.emacs), to help ensure that you get indentation right:
-
- ;;; In libguestfs, indent with spaces everywhere (not TABs).
- ;;; Exceptions: Makefile and ChangeLog modes.
- (add-hook 'find-file-hook
- '(lambda () (if (and buffer-file-name
- (string-match "/libguestfs\\>" (buffer-file-name))
- (not (string-equal mode-name "Change Log"))
- (not (string-equal mode-name "Makefile")))
- (setq indent-tabs-mode nil))))
-
- ;;; When editing C sources in libguestfs, use this style.
- (defun libguestfs-c-mode ()
- "C mode with adjusted defaults for use with libguestfs."
- (interactive)
- (c-set-style "K&R")
- (setq c-indent-level 2)
- (setq c-basic-offset 2))
- (add-hook 'c-mode-hook
- '(lambda () (if (string-match "/libguestfs\\>" (buffer-file-name))
- (libguestfs-c-mode))))
-
-Directories
-----------------------------------------------------------------------
-
-appliance/
- The qemu appliance, build scripts and so on.
-
-capitests/
- Automated tests of the C API. See "Tests" below.
-
-cat/
- The 'virt-cat', 'virt-filesystems' and 'virt-ls' commands and
- documentation.
-
-contrib/
- Outside contributions, experimental parts.
-
-csharp/
- Experimental C# bindings.
-
-daemon/
- The daemon that runs inside the guest and carries out actions.
-
-df/
- 'virt-df' command and documentation.
-
-examples/
- The examples.
-
-fish/
- Guestfish (the command-line program / shell)
-
-fuse/
- FUSE (userspace filesystem) built on top of libguestfs.
-
-generator/
- The crucially important generator, used to automatically
- generate large amounts of boilerplate C code for things like
- RPC and bindings.
-
-haskell/
- Haskell bindings.
-
-hivex/ [removed in 1.0.85]
- This used to contain the hivex library for reading and
- writing Windows Registry binary hive files. This is now
- available as a separate upstream project.
-
-images/
- Some guest images to test against. These are gzipped to save
- space. You have to unzip them before use.
-
- Also contains some files used by the test suite.
-
-inspector/
- Virtual machine image inspector (virt-inspector).
-
-java/
- Java bindings.
-
-m4/
- M4 macros used by autoconf.
-
-ocaml/
- OCaml bindings.
-
-php/
- PHP bindings.
-
-po/
- Translations of simple gettext strings. For translations of
- longer documents, see po-docs/.
-
-po-docs/
- The build infrastructure and PO files for translations of
- manpages and POD files. Eventually this will be combined
- with the po/ directory, but that is rather complicated.
-
-perl/
- Perl bindings.
-
-python/
- Python bindings.
-
-regressions/
- Regression tests.
-
-rescue/
- 'virt-rescue' command and documentation.
-
-ruby/
- Ruby bindings.
-
-tools/
- Command line tools written in Perl (virt-resize and more).
-
-src/
- Source code to the C library.
-
-test-tool/
- Interactive qemu/kernel test tool.
-
-Tests
-----------------------------------------------------------------------
-
-You can supply zero or as many tests as you want per API call.
-
-The test environment has 4 block devices:
- /dev/sda 500MB General block device for testing.
- /dev/sdb 50MB /dev/sdb1 is an ext2 filesystem used for testing
- filesystem write operations.
- /dev/sdc 10MB Used in a few tests where 2 block devices are needed.
- /dev/sdd - ISO with fixed content (see images/test.iso).
-
-To be able to run the tests in a reasonable amount of time, the
-virtual machine and block devices are reused between tests. So don't
-try testing kill_subprocess :-x Between each test we blockdev-setrw,
-umount-all, lvm-remove-all.
-
-Each test starts with an initial scenario, selected using one of the
-'Init*' expressions, described in generator/generator_types.ml. These
-initialize the disks in a particular way as described. You should not
-assume anything about the previous contents of other disks that are
-not initialized.
-
-You can add a prerequisite clause to any individual test. This is a
-run-time check, which, if it fails, causes the test to be skipped.
-Useful if testing a command which might not work on all variations of
-libguestfs builds. A test that has prerequisite of 'Always' is run
-unconditionally.
-
-In addition, packagers can skip individual tests by setting the
-environment variables: eg:
-
- SKIP_TEST_<CMD>_<NUM>=1 SKIP_TEST_COMMAND_3=1 (skips test #3 of command)
- SKIP_TEST_<CMD>=1 SKIP_TEST_ZEROFREE=1 (skips all zerofree tests)
-
-and packagers can run only certain tests by setting eg:
-
- TEST_ONLY="vfs_type zerofree"
-
-See capitests/tests.c for more details of how these environment
-variables work.
-
-Debugging
-----------------------------------------------------------------------
-
-It's a good idea to use guestfish to try out new commands.
-
-Debugging the daemon is a problem because it runs inside a minimal
-qemu environment. However you can print messages from the daemon, and
-they will show up if you use 'guestfish -v'.
-
-Patches
-----------------------------------------------------------------------
-
-Submit patches to the mailing list:
-http://www.redhat.com/mailman/listinfo/libguestfs
-and CC to rjones@redhat.com
-
-I18N
-----------------------------------------------------------------------
-
-We support i18n (gettext anyhow) in the library.
-
-However many messages come from the daemon, and we don't translate
-those at the moment. One reason is that the appliance generally has
-all locale files removed from it, because they take up a lot of space.
-So we'd have to readd some of those, as well as copying our PO files
-into the appliance.
-
-Debugging messages are never translated, since they are intended for
-the programmers.
-
-Extended printf
-----------------------------------------------------------------------
-
-In the daemon code we have created custom printf formatters %Q and %R,
-which are used to do shell quoting.
-
-%Q => Simple shell quoted string. Any spaces or other shell characters
- are escaped for you.
-
-%R => Same as %Q except the string is treated as a path which is prefixed
- by the sysroot.
-
-eg.
-
-asprintf (&cmd, "cat %R", path);
-==> "cat /sysroot/some\ path\ with\ spaces"
-
-Note: Do NOT use these when you are passing parameters to the
-command{,r,v,rv}() functions. These parameters do NOT need to be
-quoted because they are not passed via the shell (instead, straight to
-exec). You probably want to use the sysroot_path() function however.
+The contents of this page have moved to the section "EXTENDING LIBGUESTFS"
+in the guestfs(3) man page.