volmgt_running(3volmgt) [opensolaris man page]

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

NAME

       volmgt_running - return whether or not volume management is running

SYNOPSIS

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

       int volmgt_running(void);

DESCRIPTION

       This  function  is obsolete. The management of removable media by the Volume Management feature, including vold, has been replaced by soft-
       ware that supports the Hardware Abstraction Layer (HAL). Programmatic support for HAL is through the HAL APIs, which are documented on  the
       HAL web site. See hal(5).

       volmgt_running() tells whether or not Volume Management is running.

RETURN VALUES

       volmgt_running() always returns 0 indicating Volume Management (as implemented by vold) is not running.

ERRORS

       volmgt_running() will fail, returning 0, if a stat(2) or 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 to see if Volume Management was running.

EXAMPLES

       Example 1 Using volmgt_running()

       To see if Volume Management is running:

	 if (volmgt_running() != 0) {
		 (void) printf("Volume Management is running
");
	 } else {
		 (void) printf("Volume Management is NOT running
");
	 }

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Obsolete			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cc(1B), open(2), stat(2), volmgt_check(3VOLMGT), volmgt_inuse(3VOLMGT), attributes(5), hal(5)

NOTES

       Volume Management must be running for many of the Volume Management library routines to work.

SunOS 5.11							    8 Mar 2007						   volmgt_running(3VOLMGT)

Check Out this Related Man Page

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

NAME

       media_getid - return the id of a piece of media

SYNOPSIS

       cc [flag ...] file ...-lvolgmt [library ...]

       #include <volmgt.h>

       ulonglong_t media_getid(char *vol_path);

DESCRIPTION

       media_getid() returns the id of a piece of media. Volume Management must be running. See volmgt_running(3VOLMGT).

PARAMETERS

       vol_path        Path to the block or character special device.

RETURN VALUES

       media_getid()  returns  the  id	of  the volume. This value is unique for each volume. If media_getid() returns 0, the path provided is not
       valid, for example, it is a block or char device.

EXAMPLES

       Example 1: Using media_getid()

       The following example first checks if Volume Management is running, then checks the volume management name space for path, and then returns
       the id for the piece of media.

       char *path;

	    ...

       if (volmgt_running()) {
	    if (volmgt_ownspath(path)) {
		 (void) printf("id of %s is %lld
",
		      path, media_getid(path));
	    }
	    }

       If  a program using media_getid() does not check whether or not Volume Management is running, then any NULL return value will be ambiguous,
       as it could mean that either Volume Management does not have path in its name space, or Volume Management is not running.

ATTRIBUTES

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

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

SEE ALSO

       volmgt_ownspath(3VOLMGT),volmgt_running(3VOLMGT),attributes(5)

SunOS 5.10							    29 Apr1998						      media_getid(3VOLMGT)

Linux and UNIX Man Pages

volmgt_running(3volmgt) [opensolaris man page]

Check Out this Related Man Page