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SYSVIPCD(8)            DragonFly System Manager's Manual           SYSVIPCD(8)


NAME

     sysvipcd -- SysV IPC daemon


SYNOPSIS

     sysvipcd [-df] [-p pidfile]


DESCRIPTION

     The sysvipcd daemon handles the resource management for the userspace
     implementation of the XSI Interprocess Communication functions.  It is
     responsible for mapping shared memory, semaphores and message queues into
     the clients' address spaces and it has to be running for the userspace
     implementation to work.

     Clients connect to it through a UNIX socket.  The daemon also monitors
     the fork(2) system call and any children of a process using the userspace
     implementation automatically connect to the daemon too.

     The following options are available:

     -d      run in debugging mode (prints debug messages and implies -f)

     -f      do not go to the background

     -p pidfile
             when specified, write the process ID to pidfile instead of the
             default /var/run/sysvipcd.pid.


ENVIRONMENT

     If the USR_SYSVIPC variable is set in a process' environment, the process
     and its children will use the userspace implementation of the XSI
     Interprocess Communication functions.


FILES

     /var/run/sysvipc/sysvipc_socket  name of the UNIX domain stream socket
                                      for client communication


SEE ALSO

     msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2),
     semop(2), shmat(2), shmctl(2), shmget(2)


HISTORY

     The sysvipcd daemon was added in DragonFly 3.7


AUTHORS

     Larisa Grigore

DragonFly 3.7                   January 4, 2014                  DragonFly 3.7

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