| Commit message (Collapse) | Author | Age | Files | Lines |
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Since our minimum supported version is now 1.16 and mount was fixed in
1.13.16, it is now safe to replace mount-options + empty options with
mount wherever it occurs.
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$g is the "standard" name for libguestfs handles.
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By using the once_had_no_optargs flag, this change is backwards
compatible for callers (except Haskell, PHP and GObject as discussed
in earlier commit).
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The internal_* prefix is reserved for internal functions
such as these tests.
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Old KVM can't add /dev/null readonly. Treat /dev/null as a special
case.
We also fix a few tests where /dev/null was being used with
format=qcow2. This was always incorrect behaviour, but qemu appears
to tolerate it.
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Originally this state was intended so that in some way you could find
out if the appliance was running a command. However there was never a
thread-safe way to access the state of the handle, so in effect you
could never do anything useful safely with this information.
This commit completely removes the BUSY state.
The only visible change is to the guestfs_is_busy API. Previously you
could never call this safely from another thread. If you called it
from the same thread it would always return false (since the current
thread can't be running a libguestfs command at that point by
definition). Now it always returns false.
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Because this is a useful introspection API, it is a candidate for
being backported into older stable branches.
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The methods $h->set_progress_callback and $h->clear_progress_callback
have been removed, and replaced with a complete mechanism for setting
and deleting general-purpose events.
This also updates virt-resize to use the new API.
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This updates commit 1d999540bddd7aea7c2d0fef8b15223d4acc645f.
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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 change simply converts the existing Perl-only function
file_architecture into a core API call. The core API call is
written in C and available in all languages and from guestfish.
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This add an optional explicit $g->close method which may be
used to force the handle to be closed immediately. Note the
provisos about this method in the manual page entry. Callers
should *not* normally use this method.
The implementation of the handle also changes. Before, the
handle was a blessed reference to an integer (the integer
being the pointer to the C guestfs_h handle). Now we change
this to a hashref containing currently the following field:
_g => pointer to C guestfs_h handle (as an integer)
If this field is not present, it means that the handle has been
explicitly closed. This avoids double-freeing the handle.
The user may add their own fields to this hash in order to store
per-handle data. However any fields whose names begin with
an underscore are reserved for use by the Perl bindings.
This commit also adds a regression test.
This commit also changes the existing warning when you call
a method without a Sys::Guestfs handle as the first parameter,
into an error. This is because such cases are always errors.
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guestfs_mount adds -o sync implicitly. This causes a very large
performance problem for write-intensive programs (eg. virt-v2v).
Document this as a "gotcha".
Change the tests, guestfish, Sys::Guestfs::Lib, guestmount to use
mount-options instead.
(Note that this gotcha does not affect mount-ro).
The source of the performance problem was first identified by
Matthew Booth.
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This commit introduces a generic partition creation interface
which should be future-proof and extensible, and partially
replaces the old sfdisk-based interface.
The implementation is based on parted but is hopefully not too
dependent on the particulars of parted.
The following new calls are introduced:
guestfs_part_init:
Initialize a disk with a partition table. Unlike the sfdisk-
based interface, we also support GPT and other partition
types, which is essential to scale to devices larger than 2TB.
guestfs_part_add: Add a partition to an existing disk.
guestfs_part_disk:
Convenience function which combines part_init & part_add,
creating a single partition that covers the whole disk.
guestfs_part_set_bootable:
guestfs_part_set_name:
Set various aspects of existing partitions.
guestfs_part_list:
List partitions on a device. This returns a programming-friendly
list of partition structs (in contrast to sfdisk-l which cannot
be parsed).
guestfs_part_get_parttype:
Return the partition table type, eg. "msdos" or "gpt".
The following calls are planned, but not added currently:
guestfs_part_get_bootable
guestfs_part_get_name
guestfs_part_set_type
guestfs_part_get_type
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This commit changes guestfs_launch so that it both launches
the appliance and waits until it is ready (ie. the daemon communicates
back to us).
Since we removed the pretence that we could implement a low-level
asynchronous API, the need to call launch() followed by wait_ready()
has looked a bit silly.
Now guestfs_wait_ready() is basically a no-op. It is left in the
API for backwards compatibility. Any calls to guestfs_wait_ready()
can be removed from client code.
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Do it by running this command:
[exempted files are matched via .x-sc_TAB_in_indentation]
git ls-files \
| pcregrep -vf .x-sc_TAB_in_indentation \
| xargs pcregrep -l '^ *\t' \
| xargs perl -MText::Tabs -ni -le \
'$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
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This command detects the architecture of some types of binaries,
libraries, kernel modules and initrd images.
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This adds a readdir call (mostly intended for programs). The
return value is a list of guestfs_dirent structures.
This adds the new types 'struct guestfs_dirent' and
'struct guestfs_dirent_list', along with all the code to
return these in the different language bindings.
Also includes additional tests for OCaml and Perl bindings
to test this.
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