2010-08-18 21:49:24 +08:00
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.TH "ASTRIBANK_IS_STARTING" "8" "16 August 2009" "" ""
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.SH NAME
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astribank_is_starting \- Mark / check is a Xorcom Astribank (xpp) is starting
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.SH SYNOPSIS
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.B astribank_is_starting [\-d] [\-v] [\-t \fItimeout\fB] <\-a|\-r|\-w>
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.B astribank_is_starting [\-d] [\-v]
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.B astribank_is_starting \-h
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.SH DESCRIPTION
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.B astribank_is_starting
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is an internal tool used by various xpp scripts to mark that there may
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be an Astribank device currently initializing, and to check for that mark.
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Technically the mark is a SysV semaphore.
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.SH OPTIONS
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.B \-a
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.RS
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.B Add.
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Set the mark. Should return 0 unless there's an error.
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.RE
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.B \-r
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.RS
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.B Remove.
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Reset the mark. Should return 0 unless there's an error.
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.RE
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.BI \-t timeout
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.RS
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.B Timeout.
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Set the timeout value for the \fB\-w\fR option. Default is 60 seconds.
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.RE
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.B \-w
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.RS
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.B Wait.
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Wait for mark to be reset. Should return 0 unless there's an error.
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.RE
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Without \-a or \-r: return 0 if the mark has been set, or a non-zero value
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otherwise.
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.B \-d
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.RS
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Print debug information to stderr.
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.RE
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.B \-v
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.RS
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Verbose execution.
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.RE
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.B \-h
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.RS
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Displays usage message.
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.RE
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.SH FILES
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.B /proc/sysvipc/sem
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.RS
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If set, the astribank should appear there with the ID 11211168 (0xAB11A0).
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Naturally the ID (or rather, the usage of a semaphore in the first place)
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is an implementation detail that may change.
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.RE
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.SH NOTES
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.B astribank_is_starting
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is used to mark the fact that an Astribank may be currently reenumerating
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(technically: distonnecting and connecting as a new USB device) after
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loading the firmware. Thus the script that loads the firmware
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(/usr/share/dahdi/xpp_fxloader) uses this utility to set the mark.
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The mark is reset by /usr/share/dahdi/waitfor_xpds , which is typically
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run by the DAHDI init script and waits for all Astribanks to finish
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loading.
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Q: Why do you use a semaphore?
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A: because, unlike the filesystem, it is writable at any given time.
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.SH BUGS
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2016-06-27 04:54:07 +08:00
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Option ordering matter. The \fB\-v\fR and \fB\-d\fR options should precede
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2010-08-18 21:49:24 +08:00
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the actions (\fB\-a\fR, \fB\-r\fR and \fB\-w\fR).
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The \fB\-t\fItimeout\fR option should preceed the \fB\-w\fR option.
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.SH SEE ALSO
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semctl(3)
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.SH AUTHOR
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This manual page was written by Tzafrir Cohen <tzafrir.cohen@xorcom.com> .
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Permission is granted to copy, distribute and/or modify this document under
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the terms of the GNU General Public License, Version 2 any
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later version published by the Free Software Foundation.
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On Debian systems, the complete text of the GNU General Public
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License can be found in /usr/share/common\-licenses/GPL.
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