NAME

       astribank_is_starting - Mark / check is a Xorcom Astribank (xpp) is starting

SYNOPSIS

       astribank_is_starting [-d] [-v] [-t timeout] <-a|-r|-w>

       astribank_is_starting [-d] [-v]

       astribank_is_starting -h

DESCRIPTION

       astribank_is_starting  is  an  internal  tool  used  by  various xpp scripts to mark that there may be an
       Astribank device currently initializing, and to check for that mark.

       Technically the mark is a SysV semaphore.

OPTIONS

       -a
              Add.  Set the mark. Should return 0 unless there's an error.

       -r
              Remove.  Reset the mark. Should return 0 unless there's an error.

       -ttimeout
              Timeout.  Set the timeout value for the -w option. Default is 60 seconds.

       -w
              Wait.  Wait for mark to be reset. Should return 0 unless there's an error.

       Without -a or -r: return 0 if the mark has been set, or a non-zero value otherwise.

       -d
              Print debug information to stderr.

       -v
              Verbose execution.

       -h
              Displays usage message.

FILES

       /proc/sysvipc/sem
              If set, the astribank should appear there with the ID 11211168 (0xAB11A0).  Naturally the  ID  (or
              rather, the usage of a semaphore in the first place) is an implementation detail that may change.

NOTES

       astribank_is_starting  is  used  to  mark  the  fact  that  an  Astribank  may be currently reenumerating
       (technically: distonnecting and connecting as a new USB device) after  loading  the  firmware.  Thus  the
       script that loads the firmware (/usr/share/dahdi/xpp_fxloader) uses this utility to set the mark.

       The  mark is reset by /usr/share/dahdi/waitfor_xpds , which is typically run by the DAHDI init script and
       waits for all Astribanks to finish loading.

       Q: Why do you use a semaphore?

       A: because, unlike the filesystem, it is writable at any given time.

BUGS

       Option ordering matter. The -v and -d options should precede the actions (-a, -r and -w).  The  -ttimeout
       option should precede the -w option.

SEE ALSO

       semctl(3)

AUTHOR

       This  manual  page  was  written  by Tzafrir Cohen <tzafrir.cohen@xorcom.com> .  Permission is granted to
       copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2
       any later version published by the Free Software Foundation.

       On  Debian  systems,  the  complete  text  of  the  GNU  General  Public  License   can   be   found   in
       /usr/share/common-licenses/GPL.

                                                 16 August 2009                         ASTRIBANK_IS_STARTING(8)