X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=python%2Fguestfs.py;h=aa3572bf835673603ea94b23af9d200e4f60ed82;hp=864b3619dba7043a842935291cdb380e938cd740;hb=da8ddb2745c3d53c36e3ad7f09836a4c27a4d3e6;hpb=2a243cfbe1938d324ac6445aa2917ec3db0d8c50 diff --git a/python/guestfs.py b/python/guestfs.py index 864b361..aa3572b 100644 --- a/python/guestfs.py +++ b/python/guestfs.py @@ -18,192 +18,1863 @@ # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +u"""Python bindings for libguestfs + +import guestfs +g = guestfs.GuestFS () +g.add_drive ("guest.img") +g.launch () +g.wait_ready () +parts = g.list_partitions () + +The guestfs module provides a Python binding to the libguestfs API +for examining and modifying virtual machine disk images. + +Amongst the things this is good for: making batch configuration +changes to guests, getting disk used/free statistics (see also: +virt-df), migrating between virtualization systems (see also: +virt-p2v), performing partial backups, performing partial guest +clones, cloning guests and changing registry/UUID/hostname info, and +much else besides. + +Libguestfs uses Linux kernel and qemu code, and can access any type of +guest filesystem that Linux and qemu can, including but not limited +to: ext2/3/4, btrfs, FAT and NTFS, LVM, many different disk partition +schemes, qcow, qcow2, vmdk. + +Libguestfs provides ways to enumerate guest storage (eg. partitions, +LVs, what filesystem is in each LV, etc.). It can also run commands +in the context of the guest. Also you can access filesystems over FTP. + +Errors which happen while using the API are turned into Python +RuntimeError exceptions. + +To create a guestfs handle you usually have to perform the following +sequence of calls: + +# Create the handle, call add_drive at least once, and possibly +# several times if the guest has multiple block devices: +g = guestfs.GuestFS () +g.add_drive ("guest.img") + +# Launch the qemu subprocess and wait for it to become ready: +g.launch () +g.wait_ready () + +# Now you can issue commands, for example: +logvols = g.lvs () + +""" + import libguestfsmod class GuestFS: + """Instances of this class are libguestfs API handles.""" + def __init__ (self): + """Create a new libguestfs handle.""" self._o = libguestfsmod.create () def __del__ (self): libguestfsmod.close (self._o) + def test0 (self, str, optstr, strlist, b, integer, filein, fileout): + return libguestfsmod.test0 (self._o, str, optstr, strlist, b, integer, filein, fileout) + + def test0rint (self, val): + return libguestfsmod.test0rint (self._o, val) + + def test0rinterr (self): + return libguestfsmod.test0rinterr (self._o) + + def test0rint64 (self, val): + return libguestfsmod.test0rint64 (self._o, val) + + def test0rint64err (self): + return libguestfsmod.test0rint64err (self._o) + + def test0rbool (self, val): + return libguestfsmod.test0rbool (self._o, val) + + def test0rboolerr (self): + return libguestfsmod.test0rboolerr (self._o) + + def test0rconststring (self, val): + return libguestfsmod.test0rconststring (self._o, val) + + def test0rconststringerr (self): + return libguestfsmod.test0rconststringerr (self._o) + + def test0rstring (self, val): + return libguestfsmod.test0rstring (self._o, val) + + def test0rstringerr (self): + return libguestfsmod.test0rstringerr (self._o) + + def test0rstringlist (self, val): + return libguestfsmod.test0rstringlist (self._o, val) + + def test0rstringlisterr (self): + return libguestfsmod.test0rstringlisterr (self._o) + + def test0rintbool (self, val): + return libguestfsmod.test0rintbool (self._o, val) + + def test0rintboolerr (self): + return libguestfsmod.test0rintboolerr (self._o) + + def test0rpvlist (self, val): + return libguestfsmod.test0rpvlist (self._o, val) + + def test0rpvlisterr (self): + return libguestfsmod.test0rpvlisterr (self._o) + + def test0rvglist (self, val): + return libguestfsmod.test0rvglist (self._o, val) + + def test0rvglisterr (self): + return libguestfsmod.test0rvglisterr (self._o) + + def test0rlvlist (self, val): + return libguestfsmod.test0rlvlist (self._o, val) + + def test0rlvlisterr (self): + return libguestfsmod.test0rlvlisterr (self._o) + + def test0rstat (self, val): + return libguestfsmod.test0rstat (self._o, val) + + def test0rstaterr (self): + return libguestfsmod.test0rstaterr (self._o) + + def test0rstatvfs (self, val): + return libguestfsmod.test0rstatvfs (self._o, val) + + def test0rstatvfserr (self): + return libguestfsmod.test0rstatvfserr (self._o) + + def test0rhashtable (self, val): + return libguestfsmod.test0rhashtable (self._o, val) + + def test0rhashtableerr (self): + return libguestfsmod.test0rhashtableerr (self._o) + def launch (self): + u"""Internally libguestfs is implemented by running a + virtual machine using qemu(1). + + You should call this after configuring the handle (eg. + adding drives) but before performing any actions. + """ return libguestfsmod.launch (self._o) def wait_ready (self): + u"""Internally libguestfs is implemented by running a + virtual machine using qemu(1). + + You should call this after "g.launch" to wait for the + launch to complete. + """ return libguestfsmod.wait_ready (self._o) def kill_subprocess (self): + u"""This kills the qemu subprocess. You should never need to + call this. + """ return libguestfsmod.kill_subprocess (self._o) def add_drive (self, filename): + u"""This function adds a virtual machine disk image + "filename" to the guest. The first time you call this + function, the disk appears as IDE disk 0 ("/dev/sda") in + the guest, the second time as "/dev/sdb", and so on. + + You don't necessarily need to be root when using + libguestfs. However you obviously do need sufficient + permissions to access the filename for whatever + operations you want to perform (ie. read access if you + just want to read the image or write access if you want + to modify the image). + + This is equivalent to the qemu parameter "-drive + file=filename,cache=off". + + Note that this call checks for the existence of + "filename". This stops you from specifying other types + of drive which are supported by qemu such as "nbd:" and + "http:" URLs. To specify those, use the general + "g.config" call instead. + """ return libguestfsmod.add_drive (self._o, filename) def add_cdrom (self, filename): + u"""This function adds a virtual CD-ROM disk image to the + guest. + + This is equivalent to the qemu parameter "-cdrom + filename". + + Note that this call checks for the existence of + "filename". This stops you from specifying other types + of drive which are supported by qemu such as "nbd:" and + "http:" URLs. To specify those, use the general + "g.config" call instead. + """ return libguestfsmod.add_cdrom (self._o, filename) + def add_drive_ro (self, filename): + u"""This adds a drive in snapshot mode, making it + effectively read-only. + + Note that writes to the device are allowed, and will be + seen for the duration of the guestfs handle, but they + are written to a temporary file which is discarded as + soon as the guestfs handle is closed. We don't currently + have any method to enable changes to be committed, + although qemu can support this. + + This is equivalent to the qemu parameter "-drive + file=filename,snapshot=on". + + Note that this call checks for the existence of + "filename". This stops you from specifying other types + of drive which are supported by qemu such as "nbd:" and + "http:" URLs. To specify those, use the general + "g.config" call instead. + """ + return libguestfsmod.add_drive_ro (self._o, filename) + def config (self, qemuparam, qemuvalue): + u"""This can be used to add arbitrary qemu command line + parameters of the form "-param value". Actually it's not + quite arbitrary - we prevent you from setting some + parameters which would interfere with parameters that we + use. + + The first character of "param" string must be a "-" + (dash). + + "value" can be NULL. + """ return libguestfsmod.config (self._o, qemuparam, qemuvalue) + def set_qemu (self, qemu): + u"""Set the qemu binary that we will use. + + The default is chosen when the library was compiled by + the configure script. + + You can also override this by setting the + "LIBGUESTFS_QEMU" environment variable. + + Setting "qemu" to "NULL" restores the default qemu + binary. + """ + return libguestfsmod.set_qemu (self._o, qemu) + + def get_qemu (self): + u"""Return the current qemu binary. + + This is always non-NULL. If it wasn't set already, then + this will return the default qemu binary name. + """ + return libguestfsmod.get_qemu (self._o) + def set_path (self, path): + u"""Set the path that libguestfs searches for kernel and + initrd.img. + + The default is "$libdir/guestfs" unless overridden by + setting "LIBGUESTFS_PATH" environment variable. + + Setting "path" to "NULL" restores the default path. + """ return libguestfsmod.set_path (self._o, path) def get_path (self): + u"""Return the current search path. + + This is always non-NULL. If it wasn't set already, then + this will return the default path. + """ return libguestfsmod.get_path (self._o) + def set_append (self, append): + u"""This function is used to add additional options to the + guest kernel command line. + + The default is "NULL" unless overridden by setting + "LIBGUESTFS_APPEND" environment variable. + + Setting "append" to "NULL" means *no* additional options + are passed (libguestfs always adds a few of its own). + """ + return libguestfsmod.set_append (self._o, append) + + def get_append (self): + u"""Return the additional kernel options which are added to + the guest kernel command line. + + If "NULL" then no options are added. + """ + return libguestfsmod.get_append (self._o) + def set_autosync (self, autosync): + u"""If "autosync" is true, this enables autosync. Libguestfs + will make a best effort attempt to run "g.umount_all" + followed by "g.sync" when the handle is closed (also if + the program exits without closing handles). + + This is disabled by default (except in guestfish where + it is enabled by default). + """ return libguestfsmod.set_autosync (self._o, autosync) def get_autosync (self): + u"""Get the autosync flag. + """ return libguestfsmod.get_autosync (self._o) def set_verbose (self, verbose): + u"""If "verbose" is true, this turns on verbose messages (to + "stderr"). + + Verbose messages are disabled unless the environment + variable "LIBGUESTFS_DEBUG" is defined and set to 1. + """ return libguestfsmod.set_verbose (self._o, verbose) def get_verbose (self): + u"""This returns the verbose messages flag. + """ return libguestfsmod.get_verbose (self._o) + def is_ready (self): + u"""This returns true iff this handle is ready to accept + commands (in the "READY" state). + + For more information on states, see guestfs(3). + """ + return libguestfsmod.is_ready (self._o) + + def is_config (self): + u"""This returns true iff this handle is being configured + (in the "CONFIG" state). + + For more information on states, see guestfs(3). + """ + return libguestfsmod.is_config (self._o) + + def is_launching (self): + u"""This returns true iff this handle is launching the + subprocess (in the "LAUNCHING" state). + + For more information on states, see guestfs(3). + """ + return libguestfsmod.is_launching (self._o) + + def is_busy (self): + u"""This returns true iff this handle is busy processing a + command (in the "BUSY" state). + + For more information on states, see guestfs(3). + """ + return libguestfsmod.is_busy (self._o) + + def get_state (self): + u"""This returns the current state as an opaque integer. + This is only useful for printing debug and internal + error messages. + + For more information on states, see guestfs(3). + """ + return libguestfsmod.get_state (self._o) + + def set_busy (self): + u"""This sets the state to "BUSY". This is only used when + implementing actions using the low-level API. + + For more information on states, see guestfs(3). + """ + return libguestfsmod.set_busy (self._o) + + def set_ready (self): + u"""This sets the state to "READY". This is only used when + implementing actions using the low-level API. + + For more information on states, see guestfs(3). + """ + return libguestfsmod.set_ready (self._o) + + def end_busy (self): + u"""This sets the state to "READY", or if in "CONFIG" then + it leaves the state as is. This is only used when + implementing actions using the low-level API. + + For more information on states, see guestfs(3). + """ + return libguestfsmod.end_busy (self._o) + def mount (self, device, mountpoint): + u"""Mount a guest disk at a position in the filesystem. + Block devices are named "/dev/sda", "/dev/sdb" and so + on, as they were added to the guest. If those block + devices contain partitions, they will have the usual + names (eg. "/dev/sda1"). Also LVM "/dev/VG/LV"-style + names can be used. + + The rules are the same as for mount(2): A filesystem + must first be mounted on "/" before others can be + mounted. Other filesystems can only be mounted on + directories which already exist. + + The mounted filesystem is writable, if we have + sufficient permissions on the underlying device. + + The filesystem options "sync" and "noatime" are set with + this call, in order to improve reliability. + """ return libguestfsmod.mount (self._o, device, mountpoint) def sync (self): + u"""This syncs the disk, so that any writes are flushed + through to the underlying disk image. + + You should always call this if you have modified a disk + image, before closing the handle. + """ return libguestfsmod.sync (self._o) def touch (self, path): + u"""Touch acts like the touch(1) command. It can be used to + update the timestamps on a file, or, if the file does + not exist, to create a new zero-length file. + """ return libguestfsmod.touch (self._o, path) def cat (self, path): + u"""Return the contents of the file named "path". + + Note that this function cannot correctly handle binary + files (specifically, files containing "\\0" character + which is treated as end of string). For those you need + to use the "g.download" function which has a more + complex interface. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ return libguestfsmod.cat (self._o, path) def ll (self, directory): + u"""List the files in "directory" (relative to the root + directory, there is no cwd) in the format of 'ls -la'. + + This command is mostly useful for interactive sessions. + It is *not* intended that you try to parse the output + string. + """ return libguestfsmod.ll (self._o, directory) def ls (self, directory): + u"""List the files in "directory" (relative to the root + directory, there is no cwd). The '.' and '..' entries + are not returned, but hidden files are shown. + + This command is mostly useful for interactive sessions. + Programs should probably use "g.readdir" instead. + + This function returns a list of strings. + """ return libguestfsmod.ls (self._o, directory) def list_devices (self): + u"""List all the block devices. + + The full block device names are returned, eg. "/dev/sda" + + This function returns a list of strings. + """ return libguestfsmod.list_devices (self._o) def list_partitions (self): + u"""List all the partitions detected on all block devices. + + The full partition device names are returned, eg. + "/dev/sda1" + + This does not return logical volumes. For that you will + need to call "g.lvs". + + This function returns a list of strings. + """ return libguestfsmod.list_partitions (self._o) def pvs (self): + u"""List all the physical volumes detected. This is the + equivalent of the pvs(8) command. + + This returns a list of just the device names that + contain PVs (eg. "/dev/sda2"). + + See also "g.pvs_full". + + This function returns a list of strings. + """ return libguestfsmod.pvs (self._o) def vgs (self): + u"""List all the volumes groups detected. This is the + equivalent of the vgs(8) command. + + This returns a list of just the volume group names that + were detected (eg. "VolGroup00"). + + See also "g.vgs_full". + + This function returns a list of strings. + """ return libguestfsmod.vgs (self._o) def lvs (self): + u"""List all the logical volumes detected. This is the + equivalent of the lvs(8) command. + + This returns a list of the logical volume device names + (eg. "/dev/VolGroup00/LogVol00"). + + See also "g.lvs_full". + + This function returns a list of strings. + """ return libguestfsmod.lvs (self._o) def pvs_full (self): + u"""List all the physical volumes detected. This is the + equivalent of the pvs(8) command. The "full" version + includes all fields. + + This function returns a list of PVs. Each PV is + represented as a dictionary. + """ return libguestfsmod.pvs_full (self._o) def vgs_full (self): + u"""List all the volumes groups detected. This is the + equivalent of the vgs(8) command. The "full" version + includes all fields. + + This function returns a list of VGs. Each VG is + represented as a dictionary. + """ return libguestfsmod.vgs_full (self._o) def lvs_full (self): + u"""List all the logical volumes detected. This is the + equivalent of the lvs(8) command. The "full" version + includes all fields. + + This function returns a list of LVs. Each LV is + represented as a dictionary. + """ return libguestfsmod.lvs_full (self._o) def read_lines (self, path): + u"""Return the contents of the file named "path". + + The file contents are returned as a list of lines. + Trailing "LF" and "CRLF" character sequences are *not* + returned. + + Note that this function cannot correctly handle binary + files (specifically, files containing "\\0" character + which is treated as end of line). For those you need to + use the "g.read_file" function which has a more complex + interface. + + This function returns a list of strings. + """ return libguestfsmod.read_lines (self._o, path) def aug_init (self, root, flags): + u"""Create a new Augeas handle for editing configuration + files. If there was any previous Augeas handle + associated with this guestfs session, then it is closed. + + You must call this before using any other "g.aug_*" + commands. + + "root" is the filesystem root. "root" must not be NULL, + use "/" instead. + + The flags are the same as the flags defined in + , the logical *or* of the following integers: + + "AUG_SAVE_BACKUP" = 1 + Keep the original file with a ".augsave" extension. + + "AUG_SAVE_NEWFILE" = 2 + Save changes into a file with extension ".augnew", + and do not overwrite original. Overrides + "AUG_SAVE_BACKUP". + + "AUG_TYPE_CHECK" = 4 + Typecheck lenses (can be expensive). + + "AUG_NO_STDINC" = 8 + Do not use standard load path for modules. + + "AUG_SAVE_NOOP" = 16 + Make save a no-op, just record what would have been + changed. + + "AUG_NO_LOAD" = 32 + Do not load the tree in "g.aug_init". + + To close the handle, you can call "g.aug_close". + + To find out more about Augeas, see . + """ return libguestfsmod.aug_init (self._o, root, flags) def aug_close (self): + u"""Close the current Augeas handle and free up any + resources used by it. After calling this, you have to + call "g.aug_init" again before you can use any other + Augeas functions. + """ return libguestfsmod.aug_close (self._o) def aug_defvar (self, name, expr): + u"""Defines an Augeas variable "name" whose value is the + result of evaluating "expr". If "expr" is NULL, then + "name" is undefined. + + On success this returns the number of nodes in "expr", + or 0 if "expr" evaluates to something which is not a + nodeset. + """ return libguestfsmod.aug_defvar (self._o, name, expr) def aug_defnode (self, name, expr, val): + u"""Defines a variable "name" whose value is the result of + evaluating "expr". + + If "expr" evaluates to an empty nodeset, a node is + created, equivalent to calling "g.aug_set" "expr", + "value". "name" will be the nodeset containing that + single node. + + On success this returns a pair containing the number of + nodes in the nodeset, and a boolean flag if a node was + created. + + This function returns a tuple (int, bool). + """ return libguestfsmod.aug_defnode (self._o, name, expr, val) def aug_get (self, path): + u"""Look up the value associated with "path". If "path" + matches exactly one node, the "value" is returned. + """ return libguestfsmod.aug_get (self._o, path) def aug_set (self, path, val): + u"""Set the value associated with "path" to "value". + """ return libguestfsmod.aug_set (self._o, path, val) def aug_insert (self, path, label, before): + u"""Create a new sibling "label" for "path", inserting it + into the tree before or after "path" (depending on the + boolean flag "before"). + + "path" must match exactly one existing node in the tree, + and "label" must be a label, ie. not contain "/", "*" or + end with a bracketed index "[N]". + """ return libguestfsmod.aug_insert (self._o, path, label, before) def aug_rm (self, path): + u"""Remove "path" and all of its children. + + On success this returns the number of entries which were + removed. + """ return libguestfsmod.aug_rm (self._o, path) def aug_mv (self, src, dest): + u"""Move the node "src" to "dest". "src" must match exactly + one node. "dest" is overwritten if it exists. + """ return libguestfsmod.aug_mv (self._o, src, dest) def aug_match (self, path): + u"""Returns a list of paths which match the path expression + "path". The returned paths are sufficiently qualified so + that they match exactly one node in the current tree. + + This function returns a list of strings. + """ return libguestfsmod.aug_match (self._o, path) def aug_save (self): + u"""This writes all pending changes to disk. + + The flags which were passed to "g.aug_init" affect + exactly how files are saved. + """ return libguestfsmod.aug_save (self._o) def aug_load (self): + u"""Load files into the tree. + + See "aug_load" in the Augeas documentation for the full + gory details. + """ return libguestfsmod.aug_load (self._o) def aug_ls (self, path): + u"""This is just a shortcut for listing "g.aug_match" + "path/*" and sorting the resulting nodes into + alphabetical order. + + This function returns a list of strings. + """ return libguestfsmod.aug_ls (self._o, path) def rm (self, path): + u"""Remove the single file "path". + """ return libguestfsmod.rm (self._o, path) def rmdir (self, path): + u"""Remove the single directory "path". + """ return libguestfsmod.rmdir (self._o, path) def rm_rf (self, path): + u"""Remove the file or directory "path", recursively + removing the contents if its a directory. This is like + the "rm -rf" shell command. + """ return libguestfsmod.rm_rf (self._o, path) def mkdir (self, path): + u"""Create a directory named "path". + """ return libguestfsmod.mkdir (self._o, path) def mkdir_p (self, path): + u"""Create a directory named "path", creating any parent + directories as necessary. This is like the "mkdir -p" + shell command. + """ return libguestfsmod.mkdir_p (self._o, path) def chmod (self, mode, path): + u"""Change the mode (permissions) of "path" to "mode". Only + numeric modes are supported. + """ return libguestfsmod.chmod (self._o, mode, path) def chown (self, owner, group, path): + u"""Change the file owner to "owner" and group to "group". + + Only numeric uid and gid are supported. If you want to + use names, you will need to locate and parse the + password file yourself (Augeas support makes this + relatively easy). + """ return libguestfsmod.chown (self._o, owner, group, path) def exists (self, path): + u"""This returns "true" if and only if there is a file, + directory (or anything) with the given "path" name. + + See also "g.is_file", "g.is_dir", "g.stat". + """ return libguestfsmod.exists (self._o, path) def is_file (self, path): + u"""This returns "true" if and only if there is a file with + the given "path" name. Note that it returns false for + other objects like directories. + + See also "g.stat". + """ return libguestfsmod.is_file (self._o, path) def is_dir (self, path): + u"""This returns "true" if and only if there is a directory + with the given "path" name. Note that it returns false + for other objects like files. + + See also "g.stat". + """ return libguestfsmod.is_dir (self._o, path) def pvcreate (self, device): + u"""This creates an LVM physical volume on the named + "device", where "device" should usually be a partition + name such as "/dev/sda1". + """ return libguestfsmod.pvcreate (self._o, device) def vgcreate (self, volgroup, physvols): + u"""This creates an LVM volume group called "volgroup" from + the non-empty list of physical volumes "physvols". + """ return libguestfsmod.vgcreate (self._o, volgroup, physvols) def lvcreate (self, logvol, volgroup, mbytes): + u"""This creates an LVM volume group called "logvol" on the + volume group "volgroup", with "size" megabytes. + """ return libguestfsmod.lvcreate (self._o, logvol, volgroup, mbytes) def mkfs (self, fstype, device): + u"""This creates a filesystem on "device" (usually a + partition or LVM logical volume). The filesystem type is + "fstype", for example "ext3". + """ return libguestfsmod.mkfs (self._o, fstype, device) def sfdisk (self, device, cyls, heads, sectors, lines): + u"""This is a direct interface to the sfdisk(8) program for + creating partitions on block devices. + + "device" should be a block device, for example + "/dev/sda". + + "cyls", "heads" and "sectors" are the number of + cylinders, heads and sectors on the device, which are + passed directly to sfdisk as the *-C*, *-H* and *-S* + parameters. If you pass 0 for any of these, then the + corresponding parameter is omitted. Usually for 'large' + disks, you can just pass 0 for these, but for small + (floppy-sized) disks, sfdisk (or rather, the kernel) + cannot work out the right geometry and you will need to + tell it. + + "lines" is a list of lines that we feed to "sfdisk". For + more information refer to the sfdisk(8) manpage. + + To create a single partition occupying the whole disk, + you would pass "lines" as a single element list, when + the single element being the string "," (comma). + + See also: "g.sfdisk_l", "g.sfdisk_N" + + This command is dangerous. Without careful use you can + easily destroy all your data. + """ return libguestfsmod.sfdisk (self._o, device, cyls, heads, sectors, lines) def write_file (self, path, content, size): + u"""This call creates a file called "path". The contents of + the file is the string "content" (which can contain any + 8 bit data), with length "size". + + As a special case, if "size" is 0 then the length is + calculated using "strlen" (so in this case the content + cannot contain embedded ASCII NULs). + + *NB.* Owing to a bug, writing content containing ASCII + NUL characters does *not* work, even if the length is + specified. We hope to resolve this bug in a future + version. In the meantime use "g.upload". + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ return libguestfsmod.write_file (self._o, path, content, size) def umount (self, pathordevice): + u"""This unmounts the given filesystem. The filesystem may + be specified either by its mountpoint (path) or the + device which contains the filesystem. + """ return libguestfsmod.umount (self._o, pathordevice) def mounts (self): + u"""This returns the list of currently mounted filesystems. + It returns the list of devices (eg. "/dev/sda1", + "/dev/VG/LV"). + + Some internal mounts are not shown. + + This function returns a list of strings. + """ return libguestfsmod.mounts (self._o) def umount_all (self): + u"""This unmounts all mounted filesystems. + + Some internal mounts are not unmounted by this call. + """ return libguestfsmod.umount_all (self._o) def lvm_remove_all (self): + u"""This command removes all LVM logical volumes, volume + groups and physical volumes. + + This command is dangerous. Without careful use you can + easily destroy all your data. + """ return libguestfsmod.lvm_remove_all (self._o) + def file (self, path): + u"""This call uses the standard file(1) command to determine + the type or contents of the file. This also works on + devices, for example to find out whether a partition + contains a filesystem. + + The exact command which runs is "file -bsL path". Note + in particular that the filename is not prepended to the + output (the "-b" option). + """ + return libguestfsmod.file (self._o, path) + + def command (self, arguments): + u"""This call runs a command from the guest filesystem. The + filesystem must be mounted, and must contain a + compatible operating system (ie. something Linux, with + the same or compatible processor architecture). + + The single parameter is an argv-style list of arguments. + The first element is the name of the program to run. + Subsequent elements are parameters. The list must be + non-empty (ie. must contain a program name). Note that + the command runs directly, and is *not* invoked via the + shell (see "g.sh"). + + The return value is anything printed to *stdout* by the + command. + + If the command returns a non-zero exit status, then this + function returns an error message. The error message + string is the content of *stderr* from the command. + + The $PATH environment variable will contain at least + "/usr/bin" and "/bin". If you require a program from + another location, you should provide the full path in + the first parameter. + + Shared libraries and data files required by the program + must be available on filesystems which are mounted in + the correct places. It is the caller's responsibility to + ensure all filesystems that are needed are mounted at + the right locations. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.command (self._o, arguments) + + def command_lines (self, arguments): + u"""This is the same as "g.command", but splits the result + into a list of lines. + + See also: "g.sh_lines" + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.command_lines (self._o, arguments) + + def stat (self, path): + u"""Returns file information for the given "path". + + This is the same as the stat(2) system call. + + This function returns a dictionary, with keys matching + the various fields in the stat structure. + """ + return libguestfsmod.stat (self._o, path) + + def lstat (self, path): + u"""Returns file information for the given "path". + + This is the same as "g.stat" except that if "path" is a + symbolic link, then the link is stat-ed, not the file it + refers to. + + This is the same as the lstat(2) system call. + + This function returns a dictionary, with keys matching + the various fields in the stat structure. + """ + return libguestfsmod.lstat (self._o, path) + + def statvfs (self, path): + u"""Returns file system statistics for any mounted file + system. "path" should be a file or directory in the + mounted file system (typically it is the mount point + itself, but it doesn't need to be). + + This is the same as the statvfs(2) system call. + + This function returns a dictionary, with keys matching + the various fields in the statvfs structure. + """ + return libguestfsmod.statvfs (self._o, path) + + def tune2fs_l (self, device): + u"""This returns the contents of the ext2, ext3 or ext4 + filesystem superblock on "device". + + It is the same as running "tune2fs -l device". See + tune2fs(8) manpage for more details. The list of fields + returned isn't clearly defined, and depends on both the + version of "tune2fs" that libguestfs was built against, + and the filesystem itself. + + This function returns a dictionary. + """ + return libguestfsmod.tune2fs_l (self._o, device) + + def blockdev_setro (self, device): + u"""Sets the block device named "device" to read-only. + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_setro (self._o, device) + + def blockdev_setrw (self, device): + u"""Sets the block device named "device" to read-write. + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_setrw (self._o, device) + + def blockdev_getro (self, device): + u"""Returns a boolean indicating if the block device is + read-only (true if read-only, false if not). + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_getro (self._o, device) + + def blockdev_getss (self, device): + u"""This returns the size of sectors on a block device. + Usually 512, but can be larger for modern devices. + + (Note, this is not the size in sectors, use + "g.blockdev_getsz" for that). + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_getss (self._o, device) + + def blockdev_getbsz (self, device): + u"""This returns the block size of a device. + + (Note this is different from both *size in blocks* and + *filesystem block size*). + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_getbsz (self._o, device) + + def blockdev_setbsz (self, device, blocksize): + u"""This sets the block size of a device. + + (Note this is different from both *size in blocks* and + *filesystem block size*). + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_setbsz (self._o, device, blocksize) + + def blockdev_getsz (self, device): + u"""This returns the size of the device in units of 512-byte + sectors (even if the sectorsize isn't 512 bytes ... + weird). + + See also "g.blockdev_getss" for the real sector size of + the device, and "g.blockdev_getsize64" for the more + useful *size in bytes*. + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_getsz (self._o, device) + + def blockdev_getsize64 (self, device): + u"""This returns the size of the device in bytes. + + See also "g.blockdev_getsz". + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_getsize64 (self._o, device) + + def blockdev_flushbufs (self, device): + u"""This tells the kernel to flush internal buffers + associated with "device". + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_flushbufs (self._o, device) + + def blockdev_rereadpt (self, device): + u"""Reread the partition table on "device". + + This uses the blockdev(8) command. + """ + return libguestfsmod.blockdev_rereadpt (self._o, device) + + def upload (self, filename, remotefilename): + u"""Upload local file "filename" to "remotefilename" on the + filesystem. + + "filename" can also be a named pipe. + + See also "g.download". + """ + return libguestfsmod.upload (self._o, filename, remotefilename) + + def download (self, remotefilename, filename): + u"""Download file "remotefilename" and save it as "filename" + on the local machine. + + "filename" can also be a named pipe. + + See also "g.upload", "g.cat". + """ + return libguestfsmod.download (self._o, remotefilename, filename) + + def checksum (self, csumtype, path): + u"""This call computes the MD5, SHAx or CRC checksum of the + file named "path". + + The type of checksum to compute is given by the + "csumtype" parameter which must have one of the + following values: + + "crc" + Compute the cyclic redundancy check (CRC) specified + by POSIX for the "cksum" command. + + "md5" + Compute the MD5 hash (using the "md5sum" program). + + "sha1" + Compute the SHA1 hash (using the "sha1sum" program). + + "sha224" + Compute the SHA224 hash (using the "sha224sum" + program). + + "sha256" + Compute the SHA256 hash (using the "sha256sum" + program). + + "sha384" + Compute the SHA384 hash (using the "sha384sum" + program). + + "sha512" + Compute the SHA512 hash (using the "sha512sum" + program). + + The checksum is returned as a printable string. + """ + return libguestfsmod.checksum (self._o, csumtype, path) + + def tar_in (self, tarfile, directory): + u"""This command uploads and unpacks local file "tarfile" + (an *uncompressed* tar file) into "directory". + + To upload a compressed tarball, use "g.tgz_in". + """ + return libguestfsmod.tar_in (self._o, tarfile, directory) + + def tar_out (self, directory, tarfile): + u"""This command packs the contents of "directory" and + downloads it to local file "tarfile". + + To download a compressed tarball, use "g.tgz_out". + """ + return libguestfsmod.tar_out (self._o, directory, tarfile) + + def tgz_in (self, tarball, directory): + u"""This command uploads and unpacks local file "tarball" (a + *gzip compressed* tar file) into "directory". + + To upload an uncompressed tarball, use "g.tar_in". + """ + return libguestfsmod.tgz_in (self._o, tarball, directory) + + def tgz_out (self, directory, tarball): + u"""This command packs the contents of "directory" and + downloads it to local file "tarball". + + To download an uncompressed tarball, use "g.tar_out". + """ + return libguestfsmod.tgz_out (self._o, directory, tarball) + + def mount_ro (self, device, mountpoint): + u"""This is the same as the "g.mount" command, but it mounts + the filesystem with the read-only (*-o ro*) flag. + """ + return libguestfsmod.mount_ro (self._o, device, mountpoint) + + def mount_options (self, options, device, mountpoint): + u"""This is the same as the "g.mount" command, but it allows + you to set the mount options as for the mount(8) *-o* + flag. + """ + return libguestfsmod.mount_options (self._o, options, device, mountpoint) + + def mount_vfs (self, options, vfstype, device, mountpoint): + u"""This is the same as the "g.mount" command, but it allows + you to set both the mount options and the vfstype as for + the mount(8) *-o* and *-t* flags. + """ + return libguestfsmod.mount_vfs (self._o, options, vfstype, device, mountpoint) + + def debug (self, subcmd, extraargs): + u"""The "g.debug" command exposes some internals of + "guestfsd" (the guestfs daemon) that runs inside the + qemu subprocess. + + There is no comprehensive help for this command. You + have to look at the file "daemon/debug.c" in the + libguestfs source to find out what you can do. + """ + return libguestfsmod.debug (self._o, subcmd, extraargs) + + def lvremove (self, device): + u"""Remove an LVM logical volume "device", where "device" is + the path to the LV, such as "/dev/VG/LV". + + You can also remove all LVs in a volume group by + specifying the VG name, "/dev/VG". + """ + return libguestfsmod.lvremove (self._o, device) + + def vgremove (self, vgname): + u"""Remove an LVM volume group "vgname", (for example "VG"). + + This also forcibly removes all logical volumes in the + volume group (if any). + """ + return libguestfsmod.vgremove (self._o, vgname) + + def pvremove (self, device): + u"""This wipes a physical volume "device" so that LVM will + no longer recognise it. + + The implementation uses the "pvremove" command which + refuses to wipe physical volumes that contain any volume + groups, so you have to remove those first. + """ + return libguestfsmod.pvremove (self._o, device) + + def set_e2label (self, device, label): + u"""This sets the ext2/3/4 filesystem label of the + filesystem on "device" to "label". Filesystem labels are + limited to 16 characters. + + You can use either "g.tune2fs_l" or "g.get_e2label" to + return the existing label on a filesystem. + """ + return libguestfsmod.set_e2label (self._o, device, label) + + def get_e2label (self, device): + u"""This returns the ext2/3/4 filesystem label of the + filesystem on "device". + """ + return libguestfsmod.get_e2label (self._o, device) + + def set_e2uuid (self, device, uuid): + u"""This sets the ext2/3/4 filesystem UUID of the filesystem + on "device" to "uuid". The format of the UUID and + alternatives such as "clear", "random" and "time" are + described in the tune2fs(8) manpage. + + You can use either "g.tune2fs_l" or "g.get_e2uuid" to + return the existing UUID of a filesystem. + """ + return libguestfsmod.set_e2uuid (self._o, device, uuid) + + def get_e2uuid (self, device): + u"""This returns the ext2/3/4 filesystem UUID of the + filesystem on "device". + """ + return libguestfsmod.get_e2uuid (self._o, device) + + def fsck (self, fstype, device): + u"""This runs the filesystem checker (fsck) on "device" + which should have filesystem type "fstype". + + The returned integer is the status. See fsck(8) for the + list of status codes from "fsck". + + Notes: + + * Multiple status codes can be summed together. + + * A non-zero return code can mean "success", for + example if errors have been corrected on the + filesystem. + + * Checking or repairing NTFS volumes is not supported + (by linux-ntfs). + + This command is entirely equivalent to running "fsck -a + -t fstype device". + """ + return libguestfsmod.fsck (self._o, fstype, device) + + def zero (self, device): + u"""This command writes zeroes over the first few blocks of + "device". + + How many blocks are zeroed isn't specified (but it's + *not* enough to securely wipe the device). It should be + sufficient to remove any partition tables, filesystem + superblocks and so on. + + See also: "g.scrub_device". + """ + return libguestfsmod.zero (self._o, device) + + def grub_install (self, root, device): + u"""This command installs GRUB (the Grand Unified + Bootloader) on "device", with the root directory being + "root". + """ + return libguestfsmod.grub_install (self._o, root, device) + + def cp (self, src, dest): + u"""This copies a file from "src" to "dest" where "dest" is + either a destination filename or destination directory. + """ + return libguestfsmod.cp (self._o, src, dest) + + def cp_a (self, src, dest): + u"""This copies a file or directory from "src" to "dest" + recursively using the "cp -a" command. + """ + return libguestfsmod.cp_a (self._o, src, dest) + + def mv (self, src, dest): + u"""This moves a file from "src" to "dest" where "dest" is + either a destination filename or destination directory. + """ + return libguestfsmod.mv (self._o, src, dest) + + def drop_caches (self, whattodrop): + u"""This instructs the guest kernel to drop its page cache, + and/or dentries and inode caches. The parameter + "whattodrop" tells the kernel what precisely to drop, + see + + Setting "whattodrop" to 3 should drop everything. + + This automatically calls sync(2) before the operation, + so that the maximum guest memory is freed. + """ + return libguestfsmod.drop_caches (self._o, whattodrop) + + def dmesg (self): + u"""This returns the kernel messages ("dmesg" output) from + the guest kernel. This is sometimes useful for extended + debugging of problems. + + Another way to get the same information is to enable + verbose messages with "g.set_verbose" or by setting the + environment variable "LIBGUESTFS_DEBUG=1" before running + the program. + """ + return libguestfsmod.dmesg (self._o) + + def ping_daemon (self): + u"""This is a test probe into the guestfs daemon running + inside the qemu subprocess. Calling this function checks + that the daemon responds to the ping message, without + affecting the daemon or attached block device(s) in any + other way. + """ + return libguestfsmod.ping_daemon (self._o) + + def equal (self, file1, file2): + u"""This compares the two files "file1" and "file2" and + returns true if their content is exactly equal, or false + otherwise. + + The external cmp(1) program is used for the comparison. + """ + return libguestfsmod.equal (self._o, file1, file2) + + def strings (self, path): + u"""This runs the strings(1) command on a file and returns + the list of printable strings found. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.strings (self._o, path) + + def strings_e (self, encoding, path): + u"""This is like the "g.strings" command, but allows you to + specify the encoding. + + See the strings(1) manpage for the full list of + encodings. + + Commonly useful encodings are "l" (lower case L) which + will show strings inside Windows/x86 files. + + The returned strings are transcoded to UTF-8. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.strings_e (self._o, encoding, path) + + def hexdump (self, path): + u"""This runs "hexdump -C" on the given "path". The result + is the human-readable, canonical hex dump of the file. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.hexdump (self._o, path) + + def zerofree (self, device): + u"""This runs the *zerofree* program on "device". This + program claims to zero unused inodes and disk blocks on + an ext2/3 filesystem, thus making it possible to + compress the filesystem more effectively. + + You should not run this program if the filesystem is + mounted. + + It is possible that using this program can damage the + filesystem or data on the filesystem. + """ + return libguestfsmod.zerofree (self._o, device) + + def pvresize (self, device): + u"""This resizes (expands or shrinks) an existing LVM + physical volume to match the new size of the underlying + device. + """ + return libguestfsmod.pvresize (self._o, device) + + def sfdisk_N (self, device, partnum, cyls, heads, sectors, line): + u"""This runs sfdisk(8) option to modify just the single + partition "n" (note: "n" counts from 1). + + For other parameters, see "g.sfdisk". You should usually + pass 0 for the cyls/heads/sectors parameters. + + This command is dangerous. Without careful use you can + easily destroy all your data. + """ + return libguestfsmod.sfdisk_N (self._o, device, partnum, cyls, heads, sectors, line) + + def sfdisk_l (self, device): + u"""This displays the partition table on "device", in the + human-readable output of the sfdisk(8) command. It is + not intended to be parsed. + """ + return libguestfsmod.sfdisk_l (self._o, device) + + def sfdisk_kernel_geometry (self, device): + u"""This displays the kernel's idea of the geometry of + "device". + + The result is in human-readable format, and not designed + to be parsed. + """ + return libguestfsmod.sfdisk_kernel_geometry (self._o, device) + + def sfdisk_disk_geometry (self, device): + u"""This displays the disk geometry of "device" read from + the partition table. Especially in the case where the + underlying block device has been resized, this can be + different from the kernel's idea of the geometry (see + "g.sfdisk_kernel_geometry"). + + The result is in human-readable format, and not designed + to be parsed. + """ + return libguestfsmod.sfdisk_disk_geometry (self._o, device) + + def vg_activate_all (self, activate): + u"""This command activates or (if "activate" is false) + deactivates all logical volumes in all volume groups. If + activated, then they are made known to the kernel, ie. + they appear as "/dev/mapper" devices. If deactivated, + then those devices disappear. + + This command is the same as running "vgchange -a y|n" + """ + return libguestfsmod.vg_activate_all (self._o, activate) + + def vg_activate (self, activate, volgroups): + u"""This command activates or (if "activate" is false) + deactivates all logical volumes in the listed volume + groups "volgroups". If activated, then they are made + known to the kernel, ie. they appear as "/dev/mapper" + devices. If deactivated, then those devices disappear. + + This command is the same as running "vgchange -a y|n + volgroups..." + + Note that if "volgroups" is an empty list then all + volume groups are activated or deactivated. + """ + return libguestfsmod.vg_activate (self._o, activate, volgroups) + + def lvresize (self, device, mbytes): + u"""This resizes (expands or shrinks) an existing LVM + logical volume to "mbytes". When reducing, data in the + reduced part is lost. + """ + return libguestfsmod.lvresize (self._o, device, mbytes) + + def resize2fs (self, device): + u"""This resizes an ext2 or ext3 filesystem to match the + size of the underlying device. + + *Note:* It is sometimes required that you run + "g.e2fsck_f" on the "device" before calling this + command. For unknown reasons "resize2fs" sometimes gives + an error about this and sometimes not. In any case, it + is always safe to call "g.e2fsck_f" before calling this + function. + """ + return libguestfsmod.resize2fs (self._o, device) + + def find (self, directory): + u"""This command lists out all files and directories, + recursively, starting at "directory". It is essentially + equivalent to running the shell command "find directory + -print" but some post-processing happens on the output, + described below. + + This returns a list of strings *without any prefix*. + Thus if the directory structure was: + + /tmp/a + /tmp/b + /tmp/c/d + + then the returned list from "g.find" "/tmp" would be 4 + elements: + + a + b + c + c/d + + If "directory" is not a directory, then this command + returns an error. + + The returned list is sorted. + + This function returns a list of strings. + """ + return libguestfsmod.find (self._o, directory) + + def e2fsck_f (self, device): + u"""This runs "e2fsck -p -f device", ie. runs the ext2/ext3 + filesystem checker on "device", noninteractively ("-p"), + even if the filesystem appears to be clean ("-f"). + + This command is only needed because of "g.resize2fs" + (q.v.). Normally you should use "g.fsck". + """ + return libguestfsmod.e2fsck_f (self._o, device) + + def sleep (self, secs): + u"""Sleep for "secs" seconds. + """ + return libguestfsmod.sleep (self._o, secs) + + def ntfs_3g_probe (self, rw, device): + u"""This command runs the ntfs-3g.probe(8) command which + probes an NTFS "device" for mountability. (Not all NTFS + volumes can be mounted read-write, and some cannot be + mounted at all). + + "rw" is a boolean flag. Set it to true if you want to + test if the volume can be mounted read-write. Set it to + false if you want to test if the volume can be mounted + read-only. + + The return value is an integer which 0 if the operation + would succeed, or some non-zero value documented in the + ntfs-3g.probe(8) manual page. + """ + return libguestfsmod.ntfs_3g_probe (self._o, rw, device) + + def sh (self, command): + u"""This call runs a command from the guest filesystem via + the guest's "/bin/sh". + + This is like "g.command", but passes the command to: + + /bin/sh -c "command" + + Depending on the guest's shell, this usually results in + wildcards being expanded, shell expressions being + interpolated and so on. + + All the provisos about "g.command" apply to this call. + """ + return libguestfsmod.sh (self._o, command) + + def sh_lines (self, command): + u"""This is the same as "g.sh", but splits the result into a + list of lines. + + See also: "g.command_lines" + + This function returns a list of strings. + """ + return libguestfsmod.sh_lines (self._o, command) + + def glob_expand (self, pattern): + u"""This command searches for all the pathnames matching + "pattern" according to the wildcard expansion rules used + by the shell. + + If no paths match, then this returns an empty list + (note: not an error). + + It is just a wrapper around the C glob(3) function with + flags "GLOB_MARK|GLOB_BRACE". See that manual page for + more details. + + This function returns a list of strings. + """ + return libguestfsmod.glob_expand (self._o, pattern) + + def scrub_device (self, device): + u"""This command writes patterns over "device" to make data + retrieval more difficult. + + It is an interface to the scrub(1) program. See that + manual page for more details. + + This command is dangerous. Without careful use you can + easily destroy all your data. + """ + return libguestfsmod.scrub_device (self._o, device) + + def scrub_file (self, file): + u"""This command writes patterns over a file to make data + retrieval more difficult. + + The file is *removed* after scrubbing. + + It is an interface to the scrub(1) program. See that + manual page for more details. + """ + return libguestfsmod.scrub_file (self._o, file) + + def scrub_freespace (self, dir): + u"""This command creates the directory "dir" and then fills + it with files until the filesystem is full, and scrubs + the files as for "g.scrub_file", and deletes them. The + intention is to scrub any free space on the partition + containing "dir". + + It is an interface to the scrub(1) program. See that + manual page for more details. + """ + return libguestfsmod.scrub_freespace (self._o, dir) + + def mkdtemp (self, template): + u"""This command creates a temporary directory. The + "template" parameter should be a full pathname for the + temporary directory name with the final six characters + being "XXXXXX". + + For example: "/tmp/myprogXXXXXX" or + "/Temp/myprogXXXXXX", the second one being suitable for + Windows filesystems. + + The name of the temporary directory that was created is + returned. + + The temporary directory is created with mode 0700 and is + owned by root. + + The caller is responsible for deleting the temporary + directory and its contents after use. + + See also: mkdtemp(3) + """ + return libguestfsmod.mkdtemp (self._o, template) + + def wc_l (self, path): + u"""This command counts the lines in a file, using the "wc + -l" external command. + """ + return libguestfsmod.wc_l (self._o, path) + + def wc_w (self, path): + u"""This command counts the words in a file, using the "wc + -w" external command. + """ + return libguestfsmod.wc_w (self._o, path) + + def wc_c (self, path): + u"""This command counts the characters in a file, using the + "wc -c" external command. + """ + return libguestfsmod.wc_c (self._o, path) + + def head (self, path): + u"""This command returns up to the first 10 lines of a file + as a list of strings. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.head (self._o, path) + + def head_n (self, nrlines, path): + u"""If the parameter "nrlines" is a positive number, this + returns the first "nrlines" lines of the file "path". + + If the parameter "nrlines" is a negative number, this + returns lines from the file "path", excluding the last + "nrlines" lines. + + If the parameter "nrlines" is zero, this returns an + empty list. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.head_n (self._o, nrlines, path) + + def tail (self, path): + u"""This command returns up to the last 10 lines of a file + as a list of strings. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.tail (self._o, path) + + def tail_n (self, nrlines, path): + u"""If the parameter "nrlines" is a positive number, this + returns the last "nrlines" lines of the file "path". + + If the parameter "nrlines" is a negative number, this + returns lines from the file "path", starting with the + "-nrlines"th line. + + If the parameter "nrlines" is zero, this returns an + empty list. + + This function returns a list of strings. + + Because of the message protocol, there is a transfer + limit of somewhere between 2MB and 4MB. To transfer + large files you should use FTP. + """ + return libguestfsmod.tail_n (self._o, nrlines, path) + + def df (self): + u"""This command runs the "df" command to report disk space + used. + + This command is mostly useful for interactive sessions. + It is *not* intended that you try to parse the output + string. Use "statvfs" from programs. + """ + return libguestfsmod.df (self._o) + + def df_h (self): + u"""This command runs the "df -h" command to report disk + space used in human-readable format. + + This command is mostly useful for interactive sessions. + It is *not* intended that you try to parse the output + string. Use "statvfs" from programs. + """ + return libguestfsmod.df_h (self._o) + + def du (self, path): + u"""This command runs the "du -s" command to estimate file + space usage for "path". + + "path" can be a file or a directory. If "path" is a + directory then the estimate includes the contents of the + directory and all subdirectories (recursively). + + The result is the estimated size in *kilobytes* (ie. + units of 1024 bytes). + """ + return libguestfsmod.du (self._o, path) + + def initrd_list (self, path): + u"""This command lists out files contained in an initrd. + + The files are listed without any initial "/" character. + The files are listed in the order they appear (not + necessarily alphabetical). Directory names are listed as + separate items. + + Old Linux kernels (2.4 and earlier) used a compressed + ext2 filesystem as initrd. We *only* support the newer + initramfs format (compressed cpio files). + + This function returns a list of strings. + """ + return libguestfsmod.initrd_list (self._o, path) + + def mount_loop (self, file, mountpoint): + u"""This command lets you mount "file" (a filesystem image + in a file) on a mount point. It is entirely equivalent + to the command "mount -o loop file mountpoint". + """ + return libguestfsmod.mount_loop (self._o, file, mountpoint) + + def mkswap (self, device): + u"""Create a swap partition on "device". + """ + return libguestfsmod.mkswap (self._o, device) + + def mkswap_L (self, label, device): + u"""Create a swap partition on "device" with label "label". + """ + return libguestfsmod.mkswap_L (self._o, label, device) + + def mkswap_U (self, uuid, device): + u"""Create a swap partition on "device" with UUID "uuid". + """ + return libguestfsmod.mkswap_U (self._o, uuid, device) +