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authorrjones@thinkpad <rjones@thinkpad>2008-04-17 11:13:39 +0100
committerrjones@thinkpad <rjones@thinkpad>2008-04-17 11:13:39 +0100
commit5fb80987ddf0f8af6cd479964f1c5bb8340c7ba8 (patch)
tree6774d8d7c9fb2ec1b6f4b5913636f5e36af1dae2 /mlvirsh/mlvirsh.ml
parentf9d99e63272520c19bddc9e4b47731d57e5658e2 (diff)
parentf5f45d38269842b591a89ccaf2e6af7879d57aab (diff)
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-(* virsh-like command line tool.
- (C) Copyright 2007 Richard W.M. Jones, Red Hat Inc.
- http://libvirt.org/
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*)
-
-open Printf
-
-module C = Libvirt.Connect
-module D = Libvirt.Domain
-module N = Libvirt.Network
-
-(* Program name. *)
-let program_name = Filename.basename Sys.executable_name
-
-(* Parse arguments. *)
-let name = ref ""
-let readonly = ref false
-
-let argspec = Arg.align [
- "-c", Arg.Set_string name, "URI Hypervisor connection URI";
- "-r", Arg.Set readonly, " Read-only connection";
-]
-
-let usage_msg = "\
-Synopsis:
- " ^ program_name ^ " [options] [command]
-
-List of all commands:
- " ^ program_name ^ " help
-
-Full description of a single command:
- " ^ program_name ^ " help command
-
-Options:"
-
-let add_extra_arg, get_extra_args =
- let extra_args = ref [] in
- let add_extra_arg s = extra_args := s :: !extra_args in
- let get_extra_args () = List.rev !extra_args in
- add_extra_arg, get_extra_args
-
-let () = Arg.parse argspec add_extra_arg usage_msg
-
-let name = match !name with "" -> None | name -> Some name
-let readonly = !readonly
-let extra_args = get_extra_args ()
-
-(* Read a whole file into memory and return it (as a string). *)
-let rec input_file filename =
- let chan = open_in_bin filename in
- let data = input_all chan in
- close_in chan;
- data
-and input_all chan =
- let buf = Buffer.create 16384 in
- let tmpsize = 16384 in
- let tmp = String.create tmpsize in
- let n = ref 0 in
- while n := input chan tmp 0 tmpsize; !n > 0 do
- Buffer.add_substring buf tmp 0 !n;
- done;
- Buffer.contents buf
-
-(* Split a string at a separator.
- * Functions copied from extlib Copyright (C) 2003 Nicolas Cannasse et al.
- * to avoid the explicit dependency on extlib.
- *)
-let str_find str sub =
- let sublen = String.length sub in
- if sublen = 0 then
- 0
- else
- let found = ref 0 in
- let len = String.length str in
- try
- for i = 0 to len - sublen do
- let j = ref 0 in
- while String.unsafe_get str (i + !j) = String.unsafe_get sub !j do
- incr j;
- if !j = sublen then begin found := i; raise Exit; end;
- done;
- done;
- raise Not_found
- with
- Exit -> !found
-
-let str_split str sep =
- let p = str_find str sep in
- let len = String.length sep in
- let slen = String.length str in
- String.sub str 0 p, String.sub str (p + len) (slen - p - len)
-
-let str_nsplit str sep =
- if str = "" then []
- else (
- let rec nsplit str sep =
- try
- let s1 , s2 = str_split str sep in
- s1 :: nsplit s2 sep
- with
- Not_found -> [str]
- in
- nsplit str sep
- )
-
-(* Hypervisor connection. *)
-type conn_t = No_connection | RO of Libvirt.ro C.t | RW of Libvirt.rw C.t
-let conn = ref No_connection
-
-let close_connection () =
- match !conn with
- | No_connection -> ()
- | RO c ->
- C.close c;
- conn := No_connection
- | RW c ->
- C.close c;
- conn := No_connection
-
-let do_command =
- (* Command helper functions.
- *
- * Each cmd<n> is a function that constructs a command.
- * string string string ... <--- user types on the command line
- * | | |
- * arg1 arg2 arg3 ... <--- conversion functions
- * | | |
- * V V V
- * function f <--- work function
- * |
- * V
- * print result <--- printing function
- *
- * (Note that cmd<n> function constructs and returns the above
- * function, it isn't the function itself.)
- *
- * Example: If the function takes one parameter (an int) and
- * returns a string to be printed, you would use:
- *
- * cmd1 print_endline f int_of_string
- *)
- let cmd0 print fn = function (* Command with no args. *)
- | [] -> print (fn ())
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd1 print fn arg1 = function (* Command with one arg. *)
- | [str1] -> print (fn (arg1 str1))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd2 print fn arg1 arg2 = function (* Command with 2 args. *)
- | [str1; str2] -> print (fn (arg1 str1) (arg2 str2))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd3 print fn arg1 arg2 arg3 = function (* Command with 3 args. *)
- | [str1; str2; str3] -> print (fn (arg1 str1) (arg2 str2) (arg3 str3))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd01 print fn arg1 = function (* Command with 0 or 1 arg. *)
- | [] -> print (fn None)
- | [str1] -> print (fn (Some (arg1 str1)))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd12 print fn arg1 arg2 = function (* Command with 1 or 2 args. *)
- | [str1] -> print (fn (arg1 str1) None)
- | [str1; str2] -> print (fn (arg1 str1) (Some (arg2 str2)))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmd012 print fn arg1 arg2 = function (* Command with 0, 1 or 2 args. *)
- | [] -> print (fn None None)
- | [str1] -> print (fn (Some (arg1 str1)) None)
- | [str1; str2] -> print (fn (Some (arg1 str1)) (Some (arg2 str2)))
- | _ -> failwith "incorrect number of arguments for function"
- in
- let cmdN print fn = (* Command with any number of args. *)
- fun args -> print (fn args)
- in
-
- (* Get the connection or fail if we don't have one. *)
- let rec get_full_connection () =
- match !conn with
- | No_connection -> failwith "not connected to the hypervisor"
- | RO _ -> failwith "tried to do read-write operation on read-only hypervisor connection"
- | RW conn -> conn
- and get_readonly_connection () =
- match !conn with
- | No_connection -> failwith "not connected to the hypervisor"
- | RO conn -> conn
- | RW conn -> C.const conn
-(*
- and with_full_connection fn =
- fun () -> fn (get_full_connection ())
-*)
- and with_readonly_connection fn =
- fun () -> fn (get_readonly_connection ())
- and arg_full_connection fn =
- fun str -> fn (get_full_connection ()) str
- and arg_readonly_connection fn =
- fun str -> fn (get_readonly_connection ()) str
- in
-
- (* Parsing of command arguments. *)
- let string_of_readonly = function
- | "readonly" | "read-only" | "ro" -> true
- | _ -> failwith "flag should be 'readonly'"
- in
- let string_of_string (str : string) = str in
- let boolean_of_string = function
- | "enable" | "enabled" | "on" | "1" | "true" -> true
- | "disable" | "disabled" | "off" | "0" | "false" -> false
- | _ -> failwith "setting should be 'on' or 'off'"
- in
- let domain_of_string conn str =
- try
- (try
- let id = int_of_string str in
- D.lookup_by_id conn id
- with
- Failure "int_of_string" ->
- if String.length str = Libvirt.uuid_string_length then
- D.lookup_by_uuid_string conn str
- else
- D.lookup_by_name conn str
- )
- with
- Libvirt.Virterror err ->
- failwith ("domain " ^ str ^ ": not found. Additional info: " ^
- Libvirt.Virterror.to_string err);
- in
- let network_of_string conn str =
- try
- if String.length str = Libvirt.uuid_string_length then
- N.lookup_by_uuid_string conn str
- else
- N.lookup_by_name conn str
- with
- Libvirt.Virterror err ->
- failwith ("network " ^ str ^ ": not found. Additional info: " ^
- Libvirt.Virterror.to_string err);
- in
- let rec parse_sched_params = function
- | [] -> []
- | [_] -> failwith "expected field value pairs, but got an odd number of arguments"
- | field :: value :: rest ->
- (* XXX We only support the UINT type at the moment. *)
- (field, D.SchedFieldUInt32 (Int32.of_string value))
- :: parse_sched_params rest
- in
- let cpumap_of_string str =
- let c = get_readonly_connection () in
- let info = C.get_node_info c in
- let cpumap =
- String.make (C.cpumaplen (C.maxcpus_of_node_info info)) '\000' in
- List.iter (C.use_cpu cpumap)
- (List.map int_of_string (str_nsplit str ","));
- cpumap
- in
-
- (* Printing of command results. *)
- let no_return _ = () in
- let print_int i = print_endline (string_of_int i) in
- let print_int64 i = print_endline (Int64.to_string i) in
- let print_int64_array a = Array.iter print_int64 a in
- let print_bool b = print_endline (string_of_bool b) in
- let print_version v =
- let major = v / 1000000 in
- let minor = (v - major * 1000000) / 1000 in
- let release = (v - major * 1000000 - minor * 1000) in
- printf "%d.%d.%d\n" major minor release
- in
- let string_of_domain_state = function
- | D.InfoNoState -> "unknown"
- | D.InfoRunning -> "running"
- | D.InfoBlocked -> "blocked"
- | D.InfoPaused -> "paused"
- | D.InfoShutdown -> "shutdown"
- | D.InfoShutoff -> "shutoff"
- | D.InfoCrashed -> "crashed"
- in
- let string_of_vcpu_state = function
- | D.VcpuOffline -> "offline"
- | D.VcpuRunning -> "running"
- | D.VcpuBlocked -> "blocked"
- in
- let print_domain_array doms =
- Array.iter (
- fun dom ->
- let id =
- try sprintf "%d" (D.get_id dom)
- with Libvirt.Virterror _ -> "" in
- let name =
- try sprintf "%s" (D.get_name dom)
- with Libvirt.Virterror _ -> "" in
- let state =
- try
- let { D.state = state } = D.get_info dom in
- string_of_domain_state state
- with Libvirt.Virterror _ -> "" in
- printf "%5s %-30s %s\n" id name state
- ) doms
- in
- let print_network_array nets =
- Array.iter (
- fun net ->
- printf "%s\n" (N.get_name net)
- ) nets
- in
- let print_node_info info =
- printf "model: %s\n" info.C.model;
- printf "memory: %Ld K\n" info.C.memory;
- printf "cpus: %d\n" info.C.cpus;
- printf "mhz: %d\n" info.C.mhz;
- printf "nodes: %d\n" info.C.nodes;
- printf "sockets: %d\n" info.C.sockets;
- printf "cores: %d\n" info.C.cores;
- printf "threads: %d\n" info.C.threads;
- in
- let print_domain_state { D.state = state } =
- print_endline (string_of_domain_state state)
- in
- let print_domain_info info =
- printf "state: %s\n" (string_of_domain_state info.D.state);
- printf "max_mem: %Ld K\n" info.D.max_mem;
- printf "memory: %Ld K\n" info.D.memory;
- printf "nr_virt_cpu: %d\n" info.D.nr_virt_cpu;
- printf "cpu_time: %Ld ns\n" info.D.cpu_time;
- in
- let print_sched_param_array params =
- Array.iter (
- fun (name, value) ->
- printf "%-20s" name;
- match value with
- | D.SchedFieldInt32 i -> printf " %ld\n" i
- | D.SchedFieldUInt32 i -> printf " %lu\n" i
- | D.SchedFieldInt64 i -> printf " %Ld\n" i
- | D.SchedFieldUInt64 i -> printf " %Lu\n" i
- | D.SchedFieldFloat f -> printf " %g\n" f
- | D.SchedFieldBool b -> printf " %b\n" b
- ) params
- in
- let print_vcpu_info (ncpus, vcpu_infos, cpumaps, maplen, maxcpus) =
- for n = 0 to ncpus-1 do
- printf "virtual CPU: %d\n" n;
- printf " on physical CPU: %d\n" vcpu_infos.(n).D.cpu;
- printf " current state: %s\n"
- (string_of_vcpu_state vcpu_infos.(n).D.vcpu_state);
- printf " CPU time: %Ld ns\n" vcpu_infos.(n).D.vcpu_time;
- printf " CPU affinity: ";
- for m = 0 to maxcpus-1 do
- print_char (if C.cpu_usable cpumaps maplen n m then 'y' else '-')
- done;
- print_endline "";
- done
- in
- let print_block_stats { D.rd_req = rd_req; rd_bytes = rd_bytes;
- wr_req = wr_req; wr_bytes = wr_bytes;
- errs = errs } =
- if rd_req >= 0L then printf "read requests: %Ld\n" rd_req;
- if rd_bytes >= 0L then printf "read bytes: %Ld\n" rd_bytes;
- if wr_req >= 0L then printf "write requests: %Ld\n" wr_req;
- if wr_bytes >= 0L then printf "write bytes: %Ld\n" wr_bytes;
- if errs >= 0L then printf "errors: %Ld\n" errs;
- and print_interface_stats { D.rx_bytes = rx_bytes; rx_packets = rx_packets;
- rx_errs = rx_errs; rx_drop = rx_drop;
- tx_bytes = tx_bytes; tx_packets = tx_packets;
- tx_errs = tx_errs; tx_drop = tx_drop } =
- if rx_bytes >= 0L then printf "rx bytes: %Ld\n" rx_bytes;
- if rx_packets >= 0L then printf "rx packets: %Ld\n" rx_packets;
- if rx_errs >= 0L then printf "rx errs: %Ld\n" rx_errs;
- if rx_drop >= 0L then printf "rx dropped: %Ld\n" rx_drop;
- if tx_bytes >= 0L then printf "tx bytes: %Ld\n" tx_bytes;
- if tx_packets >= 0L then printf "tx packets: %Ld\n" tx_packets;
- if tx_errs >= 0L then printf "tx errs: %Ld\n" tx_errs;
- if tx_drop >= 0L then printf "tx dropped: %Ld\n" tx_drop;
- in
-
- (* List of commands. *)
- let commands = [
- "attach-device",
- cmd2 no_return D.attach_device
- (arg_full_connection domain_of_string) input_file,
- "Attach device to domain.";
- "autostart",
- cmd2 no_return D.set_autostart
- (arg_full_connection domain_of_string) boolean_of_string,
- "Set whether a domain autostarts at boot.";
- "capabilities",
- cmd0 print_endline (with_readonly_connection C.get_capabilities),
- "Returns capabilities of hypervisor/driver.";
- "close",
- cmd0 no_return close_connection,
- "Close an existing hypervisor connection.";
- "connect",
- cmd12 no_return
- (fun name readonly ->
- close_connection ();
- match readonly with
- | None | Some false -> conn := RW (C.connect ~name ())
- | Some true -> conn := RO (C.connect_readonly ~name ())
- ) string_of_string string_of_readonly,
- "Open a new hypervisor connection.";
- "create",
- cmd1 no_return
- (fun xml -> D.create_linux (get_full_connection ()) xml) input_file,
- "Create a domain from an XML file.";
- "define",
- cmd1 no_return
- (fun xml -> D.define_xml (get_full_connection ()) xml) input_file,
- "Define (but don't start) a domain from an XML file.";
- "detach-device",
- cmd2 no_return D.detach_device
- (arg_full_connection domain_of_string) input_file,
- "Detach device from domain.";
- "destroy",
- cmd1 no_return D.destroy (arg_full_connection domain_of_string),
- "Destroy a domain.";
- "domblkstat",
- cmd2 print_block_stats D.block_stats
- (arg_readonly_connection domain_of_string) string_of_string,
- "Display the block device statistics for a domain.";
- "domid",
- cmd1 print_int D.get_id (arg_readonly_connection domain_of_string),
- "Print the ID of a domain.";
- "domifstat",
- cmd2 print_interface_stats D.interface_stats
- (arg_readonly_connection domain_of_string) string_of_string,
- "Display the network interface statistics for a domain.";
- "dominfo",
- cmd1 print_domain_info D.get_info
- (arg_readonly_connection domain_of_string),
- "Print the domain info.";
- "dommaxmem",
- cmd1 print_int64 D.get_max_memory
- (arg_readonly_connection domain_of_string),
- "Print the max memory (in kilobytes) of a domain.";
- "dommaxvcpus",
- cmd1 print_int D.get_max_vcpus
- (arg_readonly_connection domain_of_string),
- "Print the max VCPUs of a domain.";
- "domname",
- cmd1 print_endline D.get_name
- (arg_readonly_connection domain_of_string),
- "Print the name of a domain.";
- "domostype",
- cmd1 print_endline D.get_os_type
- (arg_readonly_connection domain_of_string),
- "Print the OS type of a domain.";
- "domstate",
- cmd1 print_domain_state D.get_info
- (arg_readonly_connection domain_of_string),
- "Print the domain state.";
- "domuuid",
- cmd1 print_endline D.get_uuid_string
- (arg_readonly_connection domain_of_string),
- "Print the UUID of a domain.";
- "dump",
- cmd2 no_return D.core_dump
- (arg_full_connection domain_of_string) string_of_string,
- "Core dump a domain to a file for analysis.";
- "dumpxml",
- cmd1 print_endline D.get_xml_desc
- (arg_full_connection domain_of_string),
- "Print the XML description of a domain.";
- "freecell",
- cmd012 print_int64_array (
- fun start max ->
- let conn = get_readonly_connection () in
- match start, max with
- | None, _ ->
- [| C.node_get_free_memory conn |]
- | Some start, None ->
- C.node_get_cells_free_memory conn start 1
- | Some start, Some max ->
- C.node_get_cells_free_memory conn start max
- ) int_of_string int_of_string,
- "Display free memory for machine, NUMA cell or range of cells";
- "get-autostart",
- cmd1 print_bool D.get_autostart
- (arg_readonly_connection domain_of_string),
- "Print whether a domain autostarts at boot.";
- "hostname",
- cmd0 print_endline (with_readonly_connection C.get_hostname),
- "Print the hostname.";
- "list",
- cmd0 print_domain_array
- (fun () ->
- let c = get_readonly_connection () in
- let n = C.num_of_domains c in
- let domids = C.list_domains c n in
- Array.map (D.lookup_by_id c) domids),
- "List the running domains.";
- "list-defined",
- cmd0 print_domain_array
- (fun () ->
- let c = get_readonly_connection () in
- let n = C.num_of_defined_domains c in
- let domnames = C.list_defined_domains c n in
- Array.map (D.lookup_by_name c) domnames),
- "List the defined but not running domains.";
- "quit",
- cmd0 no_return (fun () -> exit 0),
- "Quit the interactive terminal.";
- "maxvcpus",
- cmd0 print_int (fun () -> C.get_max_vcpus (get_readonly_connection ()) ()),
- "Print the max VCPUs available.";
- "net-autostart",
- cmd2 no_return N.set_autostart
- (arg_full_connection network_of_string) boolean_of_string,
- "Set whether a network autostarts at boot.";
- "net-bridgename",
- cmd1 print_endline N.get_bridge_name
- (arg_readonly_connection network_of_string),
- "Print the bridge name of a network.";
- "net-create",
- cmd1 no_return
- (fun xml -> N.create_xml (get_full_connection ()) xml) input_file,
- "Create a network from an XML file.";
- "net-define",
- cmd1 no_return
- (fun xml -> N.define_xml (get_full_connection ()) xml) input_file,
- "Define (but don't start) a network from an XML file.";
- "net-destroy",
- cmd1 no_return N.destroy (arg_full_connection network_of_string),
- "Destroy a network.";
- "net-dumpxml",
- cmd1 print_endline N.get_xml_desc
- (arg_full_connection network_of_string),
- "Print the XML description of a network.";
- "net-get-autostart",
- cmd1 print_bool N.get_autostart
- (arg_full_connection network_of_string),
- "Print whether a network autostarts at boot.";
- "net-list",
- cmd0 print_network_array
- (fun () ->
- let c = get_readonly_connection () in
- let n = C.num_of_networks c in
- let nets = C.list_networks c n in
- Array.map (N.lookup_by_name c) nets),
- "List the active networks.";
- "net-list-defined",
- cmd0 print_network_array
- (fun () ->
- let c = get_readonly_connection () in
- let n = C.num_of_defined_networks c in
- let nets = C.list_defined_networks c n in
- Array.map (N.lookup_by_name c) nets),
- "List the defined but inactive networks.";
- "net-name",
- cmd1 print_endline N.get_name
- (arg_readonly_connection network_of_string),
- "Print the name of a network.";
- "net-start",
- cmd1 no_return N.create
- (arg_full_connection network_of_string),
- "Start a previously defined inactive network.";
- "net-undefine",
- cmd1 no_return N.undefine
- (arg_full_connection network_of_string),
- "Undefine an inactive network.";
- "net-uuid",
- cmd1 print_endline N.get_uuid_string
- (arg_readonly_connection network_of_string),
- "Print the UUID of a network.";
- "nodeinfo",
- cmd0 print_node_info (with_readonly_connection C.get_node_info),
- "Print node information.";
- "reboot",
- cmd1 no_return D.reboot (arg_full_connection domain_of_string),
- "Reboot a domain.";
- "restore",
- cmd1 no_return (
- fun path -> D.restore (get_full_connection ()) path
- ) string_of_string,
- "Restore a domain from the named file.";
- "resume",
- cmd1 no_return D.resume (arg_full_connection domain_of_string),
- "Resume a domain.";
- "save",
- cmd2 no_return D.save
- (arg_full_connection domain_of_string) string_of_string,
- "Save a domain to a file.";
- "schedparams",
- cmd1 print_sched_param_array (
- fun dom ->
- let n = snd (D.get_scheduler_type dom) in
- D.get_scheduler_parameters dom n
- ) (arg_readonly_connection domain_of_string),
- "Get the current scheduler parameters for a domain.";
- "schedparamset",
- cmdN no_return (
- function
- | [] -> failwith "expecting domain followed by field value pairs"
- | dom :: pairs ->
- let conn = get_full_connection () in
- let dom = domain_of_string conn dom in
- let params = parse_sched_params pairs in
- let params = Array.of_list params in
- D.set_scheduler_parameters dom params
- ),
- "Set the scheduler parameters for a domain.";
- "schedtype",
- cmd1 print_endline
- (fun dom -> fst (D.get_scheduler_type dom))
- (arg_readonly_connection domain_of_string),
- "Get the scheduler type.";
- "setmem",
- cmd2 no_return D.set_memory
- (arg_full_connection domain_of_string) Int64.of_string,
- "Set the memory used by the domain (in kilobytes).";
- "setmaxmem",
- cmd2 no_return D.set_max_memory
- (arg_full_connection domain_of_string) Int64.of_string,
- "Set the maximum memory used by the domain (in kilobytes).";
- "shutdown",
- cmd1 no_return D.shutdown
- (arg_full_connection domain_of_string),
- "Gracefully shutdown a domain.";
- "start",
- cmd1 no_return D.create
- (arg_full_connection domain_of_string),
- "Start a previously defined inactive domain.";
- "suspend",
- cmd1 no_return D.suspend
- (arg_full_connection domain_of_string),
- "Suspend a domain.";
- "type",
- cmd0 print_endline (with_readonly_connection C.get_type),
- "Print the driver name";
- "undefine",
- cmd1 no_return D.undefine
- (arg_full_connection domain_of_string),
- "Undefine an inactive domain.";
- "uri",
- cmd0 print_endline (with_readonly_connection C.get_uri),
- "Print the canonical URI.";
- "vcpuinfo",
- cmd1 print_vcpu_info (
- fun dom ->
- let c = get_readonly_connection () in
- let info = C.get_node_info c in
- let dominfo = D.get_info dom in
- let maxcpus = C.maxcpus_of_node_info info in
- let maplen = C.cpumaplen maxcpus in
- let maxinfo = dominfo.D.nr_virt_cpu in
- let ncpus, vcpu_infos, cpumaps = D.get_vcpus dom maxinfo maplen in
- ncpus, vcpu_infos, cpumaps, maplen, maxcpus
- ) (arg_readonly_connection domain_of_string),
- "Pin domain VCPU to a list of physical CPUs.";
- "vcpupin",
- cmd3 no_return D.pin_vcpu
- (arg_full_connection domain_of_string) int_of_string cpumap_of_string,
- "Pin domain VCPU to a list of physical CPUs.";
- "vcpus",
- cmd2 no_return D.set_vcpus
- (arg_full_connection domain_of_string) int_of_string,
- "Set the number of virtual CPUs assigned to a domain.";
- "version",
- cmd0 print_version (with_readonly_connection C.get_version),
- "Print the driver version";
- ] in
-
- (* Command help. *)
- let help = function
- | None -> (* List of commands. *)
- String.concat "\n" (
- List.map (
- fun (cmd, _, description) ->
- sprintf "%-12s %s" cmd description
- ) commands
- ) ^
- "\n\nUse '" ^ program_name ^ " help command' for help on a command."
-
- | Some command -> (* Full description of one command. *)
- try
- let (command, _, description) =
- List.find (fun (c, _, _) -> c = command) commands in
- sprintf "%s %s\n\n%s" program_name command description
- with
- Not_found ->
- failwith ("help: " ^ command ^ ": command not found");
- in
-
- let commands =
- ("help",
- cmd01 print_endline help string_of_string,
- "Print list of commands or full description of one command.";
- ) :: commands in
-
- (* Execute a command. *)
- let do_command command args =
- try
- let (_, cmd, _) = List.find (fun (c, _, _) -> c = command) commands in
- cmd args
- with
- Not_found ->
- failwith (command ^ ": command not found");
- in
-
- do_command
-
-(* Interactive mode. *)
-let rec interactive_mode () =
- let prompt =
- match !conn with
- | No_connection -> "mlvirsh(no connection)$ "
- | RO _ -> "mlvirsh(ro)$ "
- | RW _ -> "mlvirsh# " in
- print_string prompt;
- let command = read_line () in
- (match str_nsplit command " " with
- | [] -> ()
- | command :: args ->
- do_command command args
- );
- Gc.full_major (); (* Free up all unreachable domain and network objects. *)
- interactive_mode ()
-
-(* Connect to hypervisor. Allow the connection to fail. *)
-let () =
- conn :=
- try
- if readonly then RO (C.connect_readonly ?name ())
- else RW (C.connect ?name ())
- with
- Libvirt.Virterror err ->
- eprintf "%s: %s\n" program_name (Libvirt.Virterror.to_string err);
- No_connection
-
-let () =
- try
- (* Execute the command on the command line, if there was one.
- * Otherwise go into interactive mode.
- *)
- (match extra_args with
- | command :: args ->
- do_command command args
- | [] ->
- try interactive_mode () with End_of_file -> ()
- );
-
- (* If we are connected to a hypervisor, close the connection. *)
- close_connection ();
-
- (* A good way to find heap bugs: *)
- Gc.compact ()
- with
- | Libvirt.Virterror err ->
- eprintf "%s: %s\n" program_name (Libvirt.Virterror.to_string err)
- | Failure msg ->
- eprintf "%s: %s\n" program_name msg