on_demand_service_tool—Load and unload on-demand Mach services registered with launchd(8)
on_demand_service_tool -L -l LABEL [OPTION…] COMMAND [ARG…]
on_demand_service_tool -U -l LABEL
On-demand services may be registered with launchd(8) by using the --load form. One or more service names may be registered with the bootstrap server by specifying --mach-service. When a Mach message is sent to any of these services, launchd(8) will invoke COMMAND along with any arguments specified (ARG…). COMMAND must be an absolute pathname.
The --unload form unregisters jobs registered with launchd(8).
Registers a job with launchd(8). --label=LABEL and COMMAND are required. This operation may also be referred to as “load” or “submit”.
Unregisters a job with launchd(8). --label=LABEL is required. This operation may also be referred to as “unload” or “remove”.
LABEL is used as the job label to identify the job to launchd(8). LABEL must be unique within a launchd(8) context.
In conjunction with --load, registers SERVICE with the bootstrap server. Clients will be able to obtain a send right by looking up the SERVICE name with the bootstrap server. When a message is sent to such a Mach port, launchd(8) will invoke COMMAND along with any arguments specified (ARG…) if it is not running. This forms the “on-demand” nature referenced by this tool’s name. This option may appear zero, one, or more times. SERVICE must be unique within a bootstrap context.
Display help and exit.
Output version information and exit.
Registers an on-demand server that will execute catch_exception_tool(1) when a Mach message is sent to a Mach port obtained from the bootstrap server by looking up the name
$ on_demand_service_tool --load --label=catch_exception \ --mach-service=svc \ $(which catch_exception_tool) --mach-service=svc \ --file=/tmp/out --persistent --timeout=0
Unregisters the on-demand server installed above:
$ on_demand_service_tool --unload --label=catch_exception
Failure, with a message printed to the standard error stream.
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Copyright 2014 The Crashpad Authors.
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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