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This APIs reimplement some parts of virt-inspector in C.
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Include the XDR headers in the internal guestfs-internal.h instead.
This is knock-on effects to several other source files which
were implicitly relying on indirectly loaded headers.
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This updates commit 4d59e271046f2b5f0d9b1730cd23425fd631c76c.
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At some point we removed the last thing that required
xml-light, but were still testing for it at various places
in the build. This removes all traces.
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This allows other libraries to redefine those typedefs
if they need to use but not depend on <guestfs.h>.
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This removes the 'not-quite-separate' guestfs-actions.h and
guestfs-structs.h files.
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This new API allows you to add the disks from a libvirt
domain.
In guestfish you can use the 'domain' command to access the
API, eg:
><fs> domain Fedora14 libvirturi:qemu:///system
1
The returned number is the number of disks that were added.
Also here is a proposed (but commented out) low-level API
which would allow you to add a domain from a virDomainPtr.
However there are several problems with this API -- see discussion
on the list:
https://www.redhat.com/archives/libguestfs/2010-November/thread.html#00028
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This allows generic "foo *bar" pointers to be passed to
library functions (not to daemon functions).
In the language bindings (except Perl) these are handled
as generic int64s with the assumption being that any
pointer can be converted to and from this. There is room
to add specific support for some pointer types in future
by specializing the match cases. However this is inherently
tricky because it depends on the implementation details of
other bindings (eg. to support virDomainPtr in OCaml depends
on the implementation details of the ocaml-libvirt project).
Perl is slightly different in that you have to supply a
typemap. Again this would depend on the implementation
detail of an external library unless you supplied a generic
typemap for int64.
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This is an internal-only debugging API so may be changed or
removed at any time in the future.
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Return the roots found by the last call to inspect-os, but
without redoing the whole inspection.
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For example, it may just have been added.
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This feature is also available in guestmount because of the
shared option parsing code.
You don't need to do anything to enable it, just using -i
will attempt decryption of encrypted partitions.
Only works for simple Fedora whole-disk encryption. It's a
work-in-progress to make it work for other types of encryption.
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Run src/api-support/update-from-tarballs.sh (this won't work
unless you have a local copy of the tarballs from the website).
src/api-support/added contains the result of running the
script, a list of pairs: (API name, version first appeared).
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This fixes commit f661db2c393d1b7e4211c55682b7fac82a70e36d.
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Existing command lookups are approx O(n^2). Replace this
with a perfect hash implementation which should be a lot
faster.
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If either the daemon sends back an errno, or a system call
fails in the library, save the errno in the handle and then
make it available to callers through the guestfs_last_errno
function.
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This changes the protocol again so that if the errno is available,
it is converted to a string (like "EIO") and sent back over the
protocol to the library.
In this commit the library just discards the string.
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I have no idea why we were doing this.
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By exporting LIBGUESTFS_PATH with the right path to the appliance,
we no longer need to hard code the path in tests.c
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These macros are already defined in guestfs-internals.h
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This file is already hard-linked into the current directory, so
the relative path is not required.
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Some older tests used sfdisk to create partitions for the
tests. sfdisk is buggy (more so than parted -- what is it
with partitioning tools?) so replace these tests with
equivalent part-* commands.
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We are already using heuristics in the C inspection code to
determine the Windows %SYSTEMROOT% directory. This change
just exposes this information through the API.
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When logical volume names appear in places like /etc/fstab
files they can have the form "/dev/mapper/foo-bar". This
function takes such names and makes them canonical.
Note that this operation cannot be performed using the current
API, because 'guestfs_stat' does not work on device names, and
we don't really want to make a 'stat-device' call since that
exposes too much non-useful detail about the appliance.
With this patch you can do this:
><fs> debug ll /dev/mapper
total 8
drwxrwxr-x 2 root root 4096 Oct 25 12:51 .
drwxr-xr-x 16 root root 4096 Oct 25 12:51 ..
crw------- 1 root root 10, 62 Oct 25 12:51 control
lrwxrwxrwx 1 root root 7 Oct 25 12:51 vg_f13x64-lv_root -> ../dm-0
lrwxrwxrwx 1 root root 7 Oct 25 12:51 vg_f13x64-lv_swap -> ../dm-1
><fs> lvm-canonical-lv-name /dev/mapper/vg_f13x64-lv_root
/dev/vg_f13x64/lv_root
><fs> lvm-canonical-lv-name /dev/mapper/vg_f13x64-lv_swap
/dev/vg_f13x64/lv_swap
><fs> lvm-canonical-lv-name /dev/mapper/foo
libguestfs: error: lvm_canonical_lv_name: lvm_canonical_lv_name_stub: /dev/mapper/foo: No such file or directory
><fs> lvm-canonical-lv-name /dev/mapper/control
libguestfs: error: lvm_canonical_lv_name: /dev/mapper/control: not a logical volume
><fs> lvm-canonical-lv-name /dev/vg_f13x64/lv_root
/dev/vg_f13x64/lv_root
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The example below shows what the output looks like for a large
random buffer.
$ guestfish -N fs -m /dev/sda1 -x -- \
touch /test : \
pwrite /test "$(dd if=/dev/urandom bs=128k count=1)" 0
[...]
pwrite "/test" "\x7f\xa0/\xb3\x80\xd3\xbc\xc3\xc3.\xb1\xe0\x1b\xafC\x06\xd5;\x0ajJ[o\xc1\xdd\xae\x1f\xce\xb2\x8d\xb3\xd0\x11\xcc$%\xe6<\xc7\xc7\xe7BU*\xc4l%\xaa\xea\xe9\x1an\xda]\xc6I\x0eC\xf9;\xec\x12a\x1f\xeaRH\xb2P\xd6+\xc4\xe6\xa5bW\x99\\x9d\xc8\x9bJ\xef\x99-\x16:h5\xe2\x0f\xa2\xa08\x9bU\x0b$\x138\xcf\xd4j\x9b\x83{%\xac0\xdaa1Xx\xbd`\x8e\xdd\x82\x87\x07\x98\xd2\x9ed\x8bq\xd0\x1f5\x8f\xab\xad4z1\xda\xc4b\xc1\xbc\x0f\xaa\xea\xc1\x15(\xfd1\xc2\x0bF\xe6\x9e\xb0+/g\\xab\xb0b\xde_\xca\xf9\xad\xe1?%\x17\xad\x98\xa4e\xc1\xe0f'\x89\xe9>\xff\xadhYi\xe7\x8c]%\xef\xe0\xa1R\xe5\xd5\x03K\xefI\xdf\xad\xd3\x82\xdb\x0f\xdd\xc3\x8f"\xf1G\xea\xf9r\xdd\xff\x88\x81\xb7\xf2\x0e\x0f\x1d;:\xf2F1\xdb\xb5D\xa1^\x928\xf5\x8e)\xab\xc4\xc3H(\xd0ol\xc6\xe4\xd6\xa3L\x1c\x06\xf4"<truncated, original size 130567 bytes> 0
[...]
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This updates commit 0c1d3c02a8147617ee0646e37d011235abdd2c22.
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This large commit changes the generator so that optional arguments
can be supported for functions.
The model for arguments (known as the "style") is changed from
(ret, args) to (ret, args, optargs) where optargs is a more limited
list of arguments.
One function has been added which takes optional arguments, it is
"add-drive-opts", modelled as:
(RErr, [String "filename"], #required
[Bool "readonly"; String "format"; String "iface"]) #optional
Note that this function is processed in the library (does not go over
the RPC protocol to the daemon). This has allowed us to simplify
the current implementation by omitting changes related to RPC or the
daemon, although we plan to add these at some point in the future.
From C this function can be called in 3 different ways as in these
examples:
guestfs_add_drive_opts (g, filename,
GUESTFS_ADD_DRIVE_OPTS_READONLY, 1,
GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
-1);
(the argument(s) between 'filename' and '-1' are the optional ones).
guestfs_add_drive_opts_va (g, filename, args);
where 'args' is a va_list. This works like the first version.
struct guestfs_add_drive_opts_argv optargs = {
.bitmask = GUESTFS_ADD_DRIVE_OPTS_READONLY_BITMASK,
.readonly = 1,
}
guestfs_add_drive_opts_argv (g, filename, &optargs);
This last form lets you construct lists of optional arguments, and
is used by guestfish and the language bindings.
In guestfish optional arguments are used like this:
add-drive-opts filename readonly:true
In OCaml these are mapped naturally to OCaml optional arguments, eg:
g#add_drive_opts ~readonly:true filename;
In Perl these are mapped to extra arguments, eg:
$g->add_drive_opts ($filename, readonly => 1);
In Python these are mapped to optional arguments, eg:
g.add_drive_opts ("file", readonly = 1, format = "qcow2")
In Ruby these are mapped to a final hash argument, eg:
g.add_drive_opts("file", {})
g.add_drive_opts("file", :readonly => 1)
g.add_drive_opts("file", :readonly => 1, :iface => "virtio")
In PHP these are mapped to extra parameters. This is not quite
accurate since you cannot omit arbitrary optional parameters, but
there's not much than can be done within the limitations of PHP
as a language.
Unimplemented in: Haskell, C#, Java.
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This structure has accreted over time. Rearrange the types
into a logical order.
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This simplifies the code that generates the Perl bindings
by removing repeated sections.
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generate_c_call_args optional decl parameter is never actually
used, so remove it.
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Previously we had only one handle shared between all objects .. oops.
This fixes commit 67636f721056d2f2250b0ff8acd981a0294536a9.
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In original style:
let () =
let filename = Sys.argv.(1) in
let g = Guestfs.create () in
Guestfs.add_drive_ro g filename;
Guestfs.launch g;
let roots = Guestfs.inspect_os g in
print_endline (Guestfs.inspect_get_product_name g roots.(0))
The same code in the new OO style:
let () =
let filename = Sys.argv.(1) in
let g = new Guestfs.guestfs in
g#add_drive_ro filename;
g#launch ();
let roots = g#inspect_os () in
print_endline (g#inspect_get_product_name roots.(0))
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