volmgt_inuse(3VOLMGT)					Volume Management Library Functions				     volmgt_inuse(3VOLMGT)

NAME

       volmgt_inuse - check whether or not Volume Management is managing a pathname

SYNOPSIS

       cc [ flag ... ] file ... -lvolmgt [ library ... ]
       #include <volmgt.h>

       int volmgt_inuse(char *pathname);

DESCRIPTION

       volmgt_inuse() checks whether Volume Management is managing the specified pathname.

RETURN VALUES

       A non-zero value is returned if Volume Management is managing the specified pathname, otherwise 0 is returned.

ERRORS

       This routine can fail, returning 0, if a stat(2) of the supplied pathname or an open(2) of /dev/volctl fails, or if any of the following is
       true:

       ENXIO	       Volume Management is not running.

       EINTR	       An interrupt signal was detected while checking for the supplied pathname for use.

EXAMPLES

       Example 1: Using volmgt_inuse()

       To see if Volume Management is managing the first floppy disk:

       if (volmgt_inuse("/dev/rdiskette0") != 0) {
	       (void) printf("volmgt is managing diskette 0
");
       } else {
	       (void) printf("volmgt is NOT managing diskette 0
");
       }

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cc(1B), vold(1M), open(2), stat(2), errno(3C),  volmgt_check(3VOLMGT), volmgt_running(3VOLMGT), attributes(5), volfs(7FS)

NOTES

       This routine requires Volume Management to be running.

       Since volmgt_inuse() returns  0 for two different cases (both when a volume is not in use, and when an error occurs), it is up to the  user
       to to check errno to differentiate the two, and to ensure that Volume Management is running.

SunOS 5.10							    31 Dec 1996 					     volmgt_inuse(3VOLMGT)