+DEFHEADING()
+
+DEFHEADING(Character device options:)
+
+DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
+ "-chardev null,id=id[,mux=on|off]\n"
+ "-chardev socket,id=id[,host=host],port=host[,to=to][,ipv4][,ipv6][,nodelay]\n"
+ " [,server][,nowait][,telnet][,mux=on|off] (tcp)\n"
+ "-chardev socket,id=id,path=path[,server][,nowait][,telnet],[mux=on|off] (unix)\n"
+ "-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]\n"
+ " [,localport=localport][,ipv4][,ipv6][,mux=on|off]\n"
+ "-chardev msmouse,id=id[,mux=on|off]\n"
+ "-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]\n"
+ " [,mux=on|off]\n"
+ "-chardev file,id=id,path=path[,mux=on|off]\n"
+ "-chardev pipe,id=id,path=path[,mux=on|off]\n"
+#ifdef _WIN32
+ "-chardev console,id=id[,mux=on|off]\n"
+ "-chardev serial,id=id,path=path[,mux=on|off]\n"
+#else
+ "-chardev pty,id=id[,mux=on|off]\n"
+ "-chardev stdio,id=id[,mux=on|off][,signal=on|off]\n"
+#endif
+#ifdef CONFIG_BRLAPI
+ "-chardev braille,id=id[,mux=on|off]\n"
+#endif
+#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
+ || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+ "-chardev tty,id=id,path=path[,mux=on|off]\n"
+#endif
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__)
+ "-chardev parport,id=id,path=path[,mux=on|off]\n"
+#endif
+#if defined(CONFIG_SPICE)
+ "-chardev spicevmc,id=id,name=name[,debug=debug]\n"
+#endif
+ , QEMU_ARCH_ALL
+)
+
+STEXI
+
+The general form of a character device option is:
+@table @option
+
+@item -chardev @var{backend} ,id=@var{id} [,mux=on|off] [,@var{options}]
+@findex -chardev
+Backend is one of:
+@option{null},
+@option{socket},
+@option{udp},
+@option{msmouse},
+@option{vc},
+@option{file},
+@option{pipe},
+@option{console},
+@option{serial},
+@option{pty},
+@option{stdio},
+@option{braille},
+@option{tty},
+@option{parport},
+@option{spicevmc}.
+The specific backend will determine the applicable options.
+
+All devices must have an id, which can be any string up to 127 characters long.
+It is used to uniquely identify this device in other command line directives.
+
+A character device may be used in multiplexing mode by multiple front-ends.
+The key sequence of @key{Control-a} and @key{c} will rotate the input focus
+between attached front-ends. Specify @option{mux=on} to enable this mode.
+
+Options to each backend are described below.
+
+@item -chardev null ,id=@var{id}
+A void device. This device will not emit any data, and will drop any data it
+receives. The null backend does not take any options.
+
+@item -chardev socket ,id=@var{id} [@var{TCP options} or @var{unix options}] [,server] [,nowait] [,telnet]
+
+Create a two-way stream socket, which can be either a TCP or a unix socket. A
+unix socket will be created if @option{path} is specified. Behaviour is
+undefined if TCP options are specified for a unix socket.
+
+@option{server} specifies that the socket shall be a listening socket.
+
+@option{nowait} specifies that QEMU should not block waiting for a client to
+connect to a listening socket.
+
+@option{telnet} specifies that traffic on the socket should interpret telnet
+escape sequences.
+
+TCP and unix socket options are given below:
+
+@table @option
+
+@item TCP options: port=@var{port} [,host=@var{host}] [,to=@var{to}] [,ipv4] [,ipv6] [,nodelay]
+
+@option{host} for a listening socket specifies the local address to be bound.
+For a connecting socket species the remote host to connect to. @option{host} is
+optional for listening sockets. If not specified it defaults to @code{0.0.0.0}.
+
+@option{port} for a listening socket specifies the local port to be bound. For a
+connecting socket specifies the port on the remote host to connect to.
+@option{port} can be given as either a port number or a service name.
+@option{port} is required.
+
+@option{to} is only relevant to listening sockets. If it is specified, and
+@option{port} cannot be bound, QEMU will attempt to bind to subsequent ports up
+to and including @option{to} until it succeeds. @option{to} must be specified
+as a port number.
+
+@option{ipv4} and @option{ipv6} specify that either IPv4 or IPv6 must be used.
+If neither is specified the socket may use either protocol.
+
+@option{nodelay} disables the Nagle algorithm.
+
+@item unix options: path=@var{path}
+
+@option{path} specifies the local path of the unix socket. @option{path} is
+required.
+
+@end table
+
+@item -chardev udp ,id=@var{id} [,host=@var{host}] ,port=@var{port} [,localaddr=@var{localaddr}] [,localport=@var{localport}] [,ipv4] [,ipv6]
+
+Sends all traffic from the guest to a remote host over UDP.
+
+@option{host} specifies the remote host to connect to. If not specified it
+defaults to @code{localhost}.
+
+@option{port} specifies the port on the remote host to connect to. @option{port}
+is required.
+
+@option{localaddr} specifies the local address to bind to. If not specified it
+defaults to @code{0.0.0.0}.
+
+@option{localport} specifies the local port to bind to. If not specified any
+available local port will be used.
+
+@option{ipv4} and @option{ipv6} specify that either IPv4 or IPv6 must be used.
+If neither is specified the device may use either protocol.
+
+@item -chardev msmouse ,id=@var{id}
+
+Forward QEMU's emulated msmouse events to the guest. @option{msmouse} does not
+take any options.
+
+@item -chardev vc ,id=@var{id} [[,width=@var{width}] [,height=@var{height}]] [[,cols=@var{cols}] [,rows=@var{rows}]]
+
+Connect to a QEMU text console. @option{vc} may optionally be given a specific
+size.
+
+@option{width} and @option{height} specify the width and height respectively of
+the console, in pixels.
+
+@option{cols} and @option{rows} specify that the console be sized to fit a text
+console with the given dimensions.
+
+@item -chardev file ,id=@var{id} ,path=@var{path}
+
+Log all traffic received from the guest to a file.
+
+@option{path} specifies the path of the file to be opened. This file will be
+created if it does not already exist, and overwritten if it does. @option{path}
+is required.
+
+@item -chardev pipe ,id=@var{id} ,path=@var{path}
+
+Create a two-way connection to the guest. The behaviour differs slightly between
+Windows hosts and other hosts:
+
+On Windows, a single duplex pipe will be created at
+@file{\\.pipe\@option{path}}.
+
+On other hosts, 2 pipes will be created called @file{@option{path}.in} and
+@file{@option{path}.out}. Data written to @file{@option{path}.in} will be
+received by the guest. Data written by the guest can be read from
+@file{@option{path}.out}. QEMU will not create these fifos, and requires them to
+be present.
+
+@option{path} forms part of the pipe path as described above. @option{path} is
+required.
+
+@item -chardev console ,id=@var{id}
+
+Send traffic from the guest to QEMU's standard output. @option{console} does not
+take any options.
+
+@option{console} is only available on Windows hosts.
+
+@item -chardev serial ,id=@var{id} ,path=@option{path}
+
+Send traffic from the guest to a serial device on the host.
+
+@option{serial} is
+only available on Windows hosts.
+
+@option{path} specifies the name of the serial device to open.
+
+@item -chardev pty ,id=@var{id}
+
+Create a new pseudo-terminal on the host and connect to it. @option{pty} does
+not take any options.
+
+@option{pty} is not available on Windows hosts.
+
+@item -chardev stdio ,id=@var{id} [,signal=on|off]
+Connect to standard input and standard output of the qemu process.
+
+@option{signal} controls if signals are enabled on the terminal, that includes
+exiting QEMU with the key sequence @key{Control-c}. This option is enabled by
+default, use @option{signal=off} to disable it.
+
+@option{stdio} is not available on Windows hosts.
+
+@item -chardev braille ,id=@var{id}
+
+Connect to a local BrlAPI server. @option{braille} does not take any options.
+
+@item -chardev tty ,id=@var{id} ,path=@var{path}
+
+Connect to a local tty device.
+
+@option{tty} is only available on Linux, Sun, FreeBSD, NetBSD, OpenBSD and
+DragonFlyBSD hosts.
+
+@option{path} specifies the path to the tty. @option{path} is required.
+
+@item -chardev parport ,id=@var{id} ,path=@var{path}
+
+@option{parport} is only available on Linux, FreeBSD and DragonFlyBSD hosts.
+
+Connect to a local parallel port.
+
+@option{path} specifies the path to the parallel port device. @option{path} is
+required.
+
+@item -chardev spicevmc ,id=@var{id} ,debug=@var{debug}, name=@var{name}
+
+@option{spicevmc} is only available when spice support is built in.
+
+@option{debug} debug level for spicevmc
+
+@option{name} name of spice channel to connect to
+
+Connect to a spice virtual machine channel, such as vdiport.
+
+@end table
+ETEXI
+
+DEFHEADING()
+
+STEXI
+DEFHEADING(Device URL Syntax:)
+
+In addition to using normal file images for the emulated storage devices,
+QEMU can also use networked resources such as iSCSI devices. These are
+specified using a special URL syntax.
+
+@table @option
+@item iSCSI
+iSCSI support allows QEMU to access iSCSI resources directly and use as
+images for the guest storage. Both disk and cdrom images are supported.
+
+Syntax for specifying iSCSI LUNs is
+``iscsi://<target-ip>[:<port>]/<target-iqn>/<lun>''
+
+Example (without authentication):
+@example
+qemu -cdrom iscsi://192.0.2.1/iqn.2001-04.com.example/2 \
+--drive file=iscsi://192.0.2.1/iqn.2001-04.com.example/1
+@end example
+
+Example (CHAP username/password via URL):
+@example
+qemu --drive file=iscsi://user%password@@192.0.2.1/iqn.2001-04.com.example/1
+@end example
+
+Example (CHAP username/password via environment variables):
+@example
+LIBISCSI_CHAP_USERNAME="user" \
+LIBISCSI_CHAP_PASSWORD="password" \
+qemu --drive file=iscsi://192.0.2.1/iqn.2001-04.com.example/1
+@end example
+
+iSCSI support is an optional feature of QEMU and only available when
+compiled and linked against libiscsi.
+
+@item NBD
+QEMU supports NBD (Network Block Devices) both using TCP protocol as well
+as Unix Domain Sockets.
+
+Syntax for specifying a NBD device using TCP
+``nbd:<server-ip>:<port>[:exportname=<export>]''
+
+Syntax for specifying a NBD device using Unix Domain Sockets
+``nbd:unix:<domain-socket>[:exportname=<export>]''
+
+
+Example for TCP
+@example
+qemu --drive file=nbd:192.0.2.1:30000
+@end example
+
+Example for Unix Domain Sockets
+@example
+qemu --drive file=nbd:unix:/tmp/nbd-socket
+@end example
+
+@item Sheepdog
+Sheepdog is a distributed storage system for QEMU.
+QEMU supports using either local sheepdog devices or remote networked
+devices.
+
+Syntax for specifying a sheepdog device
+@table @list
+``sheepdog:<vdiname>''
+
+``sheepdog:<vdiname>:<snapid>''
+
+``sheepdog:<vdiname>:<tag>''
+
+``sheepdog:<host>:<port>:<vdiname>''
+
+``sheepdog:<host>:<port>:<vdiname>:<snapid>''
+
+``sheepdog:<host>:<port>:<vdiname>:<tag>''
+@end table
+
+Example
+@example
+qemu --drive file=sheepdog:192.0.2.1:30000:MyVirtualMachine
+@end example
+
+See also @url{http://http://www.osrg.net/sheepdog/}.
+
+@end table
+ETEXI
+
+DEFHEADING(Bluetooth(R) options:)
+
projects / qemu.git / blobdiff