| Commit message (Collapse) | Author | Age | Files | Lines |
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Analogous to the usual 'checksum' call.
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These APIs flesh out further the partitioning API.
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This is similar to 'guestfs_dd', but it copies just a fixed
number of bytes from the source to the destination. It's an
error if the source is too short or if the destination is too
small.
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These calls allow you to query the relationship between
LVM objects, for example, which PVs contain a VG, or which
LVs are contained in a VG.
See the example / test program 'regressions/test-lvm-mapping.pl'
for an example of how to do this from Perl.
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Returns the size of a file. You can already do this with 'stat',
but this call is good for scripting.
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Start a new API allowing groups of functions to be tested for
availability.
There are two reasons for this:
(1) If libguestfs is built with missing dependencies (eg. no Augeas lib)
then the corresponding functions are disabled in the appliance. Up till
now there has been no way to test for this except to speculatively
issue commands and check for errors.
(2) When we port the daemon to Win32 it is likely that major pieces of
functionality won't be available (eg. LVM support). This API gives
a way to test for that.
There is no change for existing clients: you still have to check for
errors from individual API calls.
For new clients, you will be able to test for availability of particular
APIs.
Usage scenario (A): An LVM editing tool which requires
both the LVM API and inotify in order to function at all:
char *apis[] = { "inotify", "lvm2", NULL };
r = guestfs_available (g, apis);
if (r == -1) {
/* print an error and exit */
}
Usage scenario (B): A general purpose tool which optionally provides
configuration file editing, but this can be disabled, the result
merely being reduced functionality:
char *apis[] = { "augeas", NULL };
r = guestfs_available (g, apis);
enable_config_edit_menus = r == 0;
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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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guestfs_pread lets you do partial file reads from arbitrary
places within a file. It works like the pread(2) system call.
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These three functions are very specifically designed for FUSE
support, so we can list directories efficiently. Instead of
making lots of lstat, lgetxattr and readlink calls, we can make just
three calls per directory to grab all the attributes (which we
then cache briefly).
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truncate, truncate_size: Used to truncate files to a particular
size, or to zero bytes.
mkdir_mode: Like mkdir but allows you to also specify the
initial permissions for the new directory.
utimens: Set timestamp on a file with nanosecond accuracy.
lchown: Corresponding to lchown(2) syscall (we already have chown).
The implementation is complicated by the fact that we had to
add an Int64 parameter type to the generator.
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This function handles an annoyance/peculiarity of the Linux
NTFS 3g driver, which is that it exports NTFS filesystems with
names case sensitive, even though under Windows they would be
case insensitive.
This causes problems because the location of (eg.) c:\windows
might appear as /windows or /WINDOWS (etc) depending on the
inconsequential details of how it was originally created.
Example of this problem on a real Windows guest:
><fs> file /windows/system32/config/system.log
libguestfs: error: file: access: /windows/system32/config/system.log: No such file or directory
><fs> case-sensitive-path /windows/system32/config/system.log
/WINDOWS/system32/config/system.LOG
><fs> file /WINDOWS/system32/config/system.LOG
MS Windows registry file, NT/2000 or above
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This adds a new API call guestfs_find0, which is like guestfs_find
but mainly doesn't suffer from the protocol limit of the earlier
command. The earlier command is not deprecated because it is
still very useful.
guestfs_find0 uses a FileOut parameter and writes the results to
an external file. The filenames in the output are separated by
ASCII NUL characters (so a bit like "find -print0").
There is also the addition of a regression test for this command.
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echo_daemon is a simple echo which can be used to test connectivity between the
client and daemon.
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Allow kernel modules to be loaded into the appliance.
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mkfs-b: Pass the -b (blocksize) parameter to mkfs.
mke2journal and friends: Lets you create external ext2 journals on
devices.
mke2fs-J and friends: Lets you create ext2/3/4 filesystems with
external journals.
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swapon-device
swapoff-device
swapon-file
swapoff-file
swapon-label
swapoff-label
swapon-uuid
swapoff-uuid
mkswap-file
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These commands can be used to make hard and symbolic links. The
readlink command is used to read existing symbolic links.
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This commit implements the RBufferOut type for returning
arbitrary 8 bit data from calls.
We also implement the guestfs_read_file call to read a
whole file that can contain any 8 bit content, but up to
a limit of ~ 2 MB.
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These specialized commands are used to create additional mountpoints
before mounting filesystems. They are only used where you want to
mount several unrelated or read-only filesystems together, and need
additional care to use correctly.
Here is how to use these calls to unpack the "Russian doll" nest
of a Fedora 11 live CD:
add-ro Fedora-11-i686-Live.iso
run
mkmountpoint /cd
mkmountpoint /squash
mkmountpoint /ext3
mount /dev/sda /cd
mount-loop /cd/LiveOS/squashfs.img /squash
mount-loop /squash/LiveOS/ext3fs.img /ext3
The inner filesystem is now unpacked under the /ext3 mountpoint.
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This commit adds six calls to support Linux extended attributes.
They are:
getxattrs list all extended attributes for a file or directory
setxattr add/replace an extended attribute
removexattr remove an extended attribute
lgetxattrs \
lsetxattr (same as above, but operate on symbolic links)
lremovexattr /
See attr(5) for more information.
This also adds support for the FBuffer field type, which maps to
an XDR opaque<> or a C (int, char *) pair.
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This command is a saner interface to partitioning.
All partition sizes are specified in megabytes (not cylinders).
You don't need to specify the cyls/heads/secs parameters.
All the test code has been updated to use this, so it is now
CHS-independent (eg. when CHS changes as between IDE and virtio).
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This file is required by configure, so we need to add it so
it is available after the git checkout.
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Git users now require the OCaml compiler in order to regenerate
the generated code after a checkout.
Generated code will remain in the tarball, so users of the
source tarball will not need the OCaml compiler.
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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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