X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=guestfish-actions.pod;h=47fb59b795f99725f82a1d431daf0fecdd657524;hp=116878ded5cef1aed0304db58641c702fbafc9cc;hb=aed0fa2c015e56a882fd6d4b759c82df08fc40d7;hpb=1765330e07a48dc6f7bdef7007f69ebe606fa731 diff --git a/guestfish-actions.pod b/guestfish-actions.pod index 116878d..47fb59b 100644 --- a/guestfish-actions.pod +++ b/guestfish-actions.pod @@ -29,7 +29,7 @@ This is equivalent to the qemu parameter C<-drive file=filename>. Close the current Augeas handle and free up any resources used by it. After calling this, you have to call -C again before you can use any other +C again before you can use any other Augeas functions. =head2 aug-defnode @@ -40,7 +40,7 @@ Defines a variable C whose value is the result of evaluating C. If C evaluates to an empty nodeset, a node is created, -equivalent to calling C C, C. +equivalent to calling C C, C. C will be the nodeset containing that single node. On success this returns a pair containing the @@ -73,7 +73,7 @@ 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 C +You must call this before using any other C commands. C is the filesystem root. C must not be NULL, @@ -108,11 +108,11 @@ Make save a no-op, just record what would have been changed. =item C = 32 -Do not load the tree in C. +Do not load the tree in C. =back -To close the handle, you can call C. +To close the handle, you can call C. To find out more about Augeas, see L. @@ -141,7 +141,7 @@ details. aug-ls path -This is just a shortcut for listing C +This is just a shortcut for listing C C and sorting the resulting nodes into alphabetical order. =head2 aug-match @@ -173,7 +173,7 @@ On success this returns the number of entries which were removed. This writes all pending changes to disk. -The flags which were passed to C affect exactly +The flags which were passed to C affect exactly how files are saved. =head2 aug-set @@ -217,7 +217,7 @@ This uses the L command. This returns the size of the device in bytes. -See also C. +See also C. This uses the L command. @@ -228,7 +228,7 @@ This uses the L command. 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 C +(Note, this is not the size in sectors, use C for that). This uses the L command. @@ -240,8 +240,8 @@ This uses the L command. This returns the size of the device in units of 512-byte sectors (even if the sectorsize isn't 512 bytes ... weird). -See also C for the real sector size of -the device, and C for the more +See also C for the real sector size of +the device, and C for the more useful I. This uses the L command. @@ -296,6 +296,51 @@ Because of the message protocol, there is a transfer limit of somewhere between 2MB and 4MB. To transfer large files you should use FTP. +=head2 checksum + + checksum csumtype path + +This call computes the MD5, SHAx or CRC checksum of the +file named C. + +The type of checksum to compute is given by the C +parameter which must have one of the following values: + +=over 4 + +=item C + +Compute the cyclic redundancy check (CRC) specified by POSIX +for the C command. + +=item C + +Compute the MD5 hash (using the C program). + +=item C + +Compute the SHA1 hash (using the C program). + +=item C + +Compute the SHA224 hash (using the C program). + +=item C + +Compute the SHA256 hash (using the C program). + +=item C + +Compute the SHA384 hash (using the C program). + +=item C + +Compute the SHA512 hash (using the C program). + +=back + +The checksum is returned as a printable string. + =head2 chmod chmod mode path @@ -315,7 +360,7 @@ yourself (Augeas support makes this relatively easy). =head2 command - command arguments,... + command 'arguments ...' This call runs a command from the guest filesystem. The filesystem must be mounted, and must contain a compatible @@ -340,7 +385,7 @@ locations. =head2 command-lines - command-lines arguments,... + command-lines 'arguments ...' This is the same as C, but splits the result into a list of lines. @@ -358,6 +403,31 @@ The first character of C string must be a C<-> (dash). C can be NULL. +=head2 debug + + debug subcmd 'extraargs ...' + +The C command exposes some internals of +C (the guestfs daemon) that runs inside the +qemu subprocess. + +There is no comprehensive help for this command. You have +to look at the file C in the libguestfs source +to find out what you can do. + +=head2 download + + download remotefilename (filename|-) + +Download file C and save it as C +on the local machine. + +C can also be a named pipe. + +See also C, C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + =head2 exists exists path @@ -365,7 +435,7 @@ C can be NULL. This returns C if and only if there is a file, directory (or anything) with the given C name. -See also C, C, C. +See also C, C, C. =head2 file @@ -394,12 +464,48 @@ Return the current search path. This is always non-NULL. If it wasn't set already, then this will return the default path. +=head2 get-qemu + + get-qemu + +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. + +=head2 get-state + + get-state + +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 L. + =head2 get-verbose get-verbose This returns the verbose messages flag. +=head2 is-busy + + is-busy + +This returns true iff this handle is busy processing a command +(in the C state). + +For more information on states, see L. + +=head2 is-config + + is-config + +This returns true iff this handle is being configured +(in the C state). + +For more information on states, see L. + =head2 is-dir is-dir path @@ -420,6 +526,24 @@ other objects like directories. See also C. +=head2 is-launching + + is-launching + +This returns true iff this handle is launching the subprocess +(in the C state). + +For more information on states, see L. + +=head2 is-ready + + is-ready + +This returns true iff this handle is ready to accept commands +(in the C state). + +For more information on states, see L. + =head2 kill-subprocess kill-subprocess @@ -505,6 +629,16 @@ and physical volumes. B. +=head2 lvremove + + lvremove device + +Remove an LVM logical volume C, where C is +the path to the LV, such as C. + +You can also remove all LVs in a volume group by specifying +the VG name, C. + =head2 lvs lvs @@ -515,7 +649,7 @@ of the L command. This returns a list of the logical volume device names (eg. C). -See also C. +See also C. =head2 lvs-full @@ -566,6 +700,29 @@ on the underlying device. The filesystem options C and C are set with this call, in order to improve reliability. +=head2 mount-options + + mount-options options device mountpoint + +This is the same as the C command, but it +allows you to set the mount options as for the +L I<-o> flag. + +=head2 mount-ro + + mount-ro device mountpoint + +This is the same as the C command, but it +mounts the filesystem with the read-only (I<-o ro>) flag. + +=head2 mount-vfs + + mount-vfs options vfstype device mountpoint + +This is the same as the C command, but it +allows you to set both the mount options and the vfstype +as for the L I<-o> and I<-t> flags. + =head2 mounts mounts @@ -583,6 +740,17 @@ This creates an LVM physical volume on the named C, where C should usually be a partition name such as C. +=head2 pvremove + + pvremove device + +This wipes a physical volume C so that LVM will no longer +recognise it. + +The implementation uses the C command which refuses to +wipe physical volumes that contain any volume groups, so you have +to remove those first. + =head2 pvs pvs @@ -593,7 +761,7 @@ of the L command. This returns a list of just the device names that contain PVs (eg. C). -See also C. +See also C. =head2 pvs-full @@ -613,7 +781,7 @@ C and C character sequences are I returned. Note that this function cannot correctly handle binary files (specifically, files containing C<\0> character which is treated -as end of line). For those you need to use the C +as end of line). For those you need to use the C function which has a more complex interface. =head2 rm @@ -658,6 +826,23 @@ must make sure it remains valid for the lifetime of the handle. Setting C to C restores the default path. +=head2 set-qemu | qemu + + set-qemu qemu + +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 C +environment variable. + +The string C is stashed in the libguestfs handle, so the caller +must make sure it remains valid for the lifetime of the handle. + +Setting C to C restores the default qemu binary. + =head2 set-verbose | verbose set-verbose true|false @@ -669,7 +854,7 @@ C is defined and set to C<1>. =head2 sfdisk - sfdisk device cyls heads sectors lines,... + sfdisk device cyls heads sectors 'lines ...' This is a direct interface to the L program for creating partitions on block devices. @@ -722,6 +907,50 @@ underlying disk image. You should always call this if you have modified a disk image, before closing the handle. +=head2 tar-in + + tar-in (tarfile|-) directory + +This command uploads and unpacks local file C (an +I tar file) into C. + +To upload a compressed tarball, use C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + +=head2 tar-out + + tar-out directory (tarfile|-) + +This command packs the contents of C and downloads +it to local file C. + +To download a compressed tarball, use C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + +=head2 tgz-in + + tgz-in (tarball|-) directory + +This command uploads and unpacks local file C (a +I tar file) into C. + +To upload an uncompressed tarball, use C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + +=head2 tgz-out + + tgz-out directory (tarball|-) + +This command packs the contents of C and downloads +it to local file C. + +To download an uncompressed tarball, use C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + =head2 touch touch path @@ -734,8 +963,8 @@ to create a new zero-length file. tune2fs-l device -This returns the contents of the ext2 or ext3 filesystem superblock -on C. +This returns the contents of the ext2, ext3 or ext4 filesystem +superblock on C. It is the same as running C. See L manpage for more details. The list of fields returned isn't @@ -758,13 +987,35 @@ This unmounts all mounted filesystems. Some internal mounts are not unmounted by this call. +=head2 upload + + upload (filename|-) remotefilename + +Upload local file C to C on the +filesystem. + +C can also be a named pipe. + +See also C. + +Use C<-> instead of a filename to read/write from stdin/stdout. + =head2 vgcreate - vgcreate volgroup physvols,... + vgcreate volgroup 'physvols ...' This creates an LVM volume group called C from the non-empty list of physical volumes C. +=head2 vgremove + + vgremove vgname + +Remove an LVM volume group C, (for example C). + +This also forcibly removes all logical volumes in the volume +group (if any). + =head2 vgs vgs @@ -775,7 +1026,7 @@ of the L command. This returns a list of just the volume group names that were detected (eg. C). -See also C. +See also C. =head2 vgs-full