1ntwdt(7D) Devices ntwdt(7D)
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6 ntwdt - Netra—based application watchdog timer driver
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9 /dev/ntwdt
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13 The ntwdt driver is a multithreaded, loadable, non-STREAMS pseudo
14 driver that provides an application with an interface for controlling a
15 system watchdog timer.
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18 The ntwdt driver implements a virtual watchdog timer that a privileged
19 application (Effective UID == 0) controls via IOCTLs.
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22 You configure the ntwdt driver by modifying the contents of the
23 ntwdt.conf file.
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26 An open() fails if:
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28 EPERM Effective user ID is not zero.
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31 ENOENT /dev/ntwdt is not present or driver is not installed.
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34 EAGAIN /dev/ntwdt has already been successfully open()'d.
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38 /dev/ntwdt Special character device.
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41 kernel/drv/sparcv9/ntwdt SPARC ntwdt driver binary.
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44 kernel/drv/ntwdt.conf Driver configuraton file.
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48 See attributes(5) for descriptions of the following attributes:
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53 ┌─────────────────────────────┬─────────────────────────────┐
54 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
55 ├─────────────────────────────┼─────────────────────────────┤
56 │Availability │SUNWcakr.u │
57 ├─────────────────────────────┼─────────────────────────────┤
58 │Architecture │SPARC │
59 └─────────────────────────────┴─────────────────────────────┘
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62 driver.conf(4), attributes(5)
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65 Writing Device Drivers
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69SunOS 5.11 05 Feb 2005 ntwdt(7D)