volmgt_release(3volmgt) [sunos man page]

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

NAME

       volmgt_release - release removable media device reservation

SYNOPSIS

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

       int volmgt_release(char *dev);

DESCRIPTION

       The   volmgt_release() routine releases the removable media device reservation specified as dev. See volmgt_acquire(3VOLMGT) for a descrip-
       tion of dev.

       If  dev is reserved by the caller,  volmgt_release() updates the internal device reservation database to indicate  that the  device  is	no
       longer reserved.  If the requested device is reserved by another process, the release attempt fails and errno is set to	0.

RETURN VALUES

       Upon successful completion, volmgt_release returns a non-zero value. Upon failure, 0 is returned.

ERRORS

       On failure, volmgt_release() returns  0, and sets  errno for one of the following conditions:

       EINVAL	       dev was invalid or missing.

       EBUSY	       dev was not reserved by the caller.

EXAMPLES

       Example 1: Using volmgt_release()

       In the following example, Volume Management is running, and the first floppy drive is reserved, accessed and released.

       #include <volmgt.h>
       char *errp;
       if (!volmgt_acquire("floppy0", "FileMgr", 0, &errp,
	   NULL)) {
	    /* handle error case */
	    ...
       }
       /* floppy acquired - now access it */
       if (!volmgt_release("floppy0")) {
	    /* handle error case */
	    ...
       }

ATTRIBUTES

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

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

SEE ALSO

       vold(1M), volmgt_acquire(3VOLMGT), attributes(5)

SunOS 5.10							    11 Dec 1996 					   volmgt_release(3VOLMGT)

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

NAME

       volmgt_feature_enabled - check whether specific Volume Management features are enabled

SYNOPSIS

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

       int volmgt_feature_enabled(char *feat_str);

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). The return value of this function is undefined.

       The   volmgt_feature_enabled()  routine checks whether specific volume management features are enabled. volmgt_feature_enabled() checks for
       the volume management features passed in to it by the  feat_str parameter.

       Currently, the only supported feature string  that  volmgt_feature_enabled() checks for is  floppy-summit-interfaces.  The   floppy-summit-
       interfaces feature string checks for the presence of the libvolmgt routines volmgt_acquire() and volmgt_release().

RETURN VALUES

       The return from this function is undefined.

EXAMPLES

       Example 1 A sample of the volmgt_feature_enabled() function.

       In the following example,  volmgt_feature_enabled() checks whether the  floppy-summit-interfaces feature is enabled.

	 if (volmgt_feature_enabled("floppy-summit-interfaces")) {
		 (void) printf("Media Sharing Routines ARE present
");
	 } else {
		 (void) printf("Media Sharing Routines are NOT present
");
	 }

ATTRIBUTES

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

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

SEE ALSO

       volmgt_acquire(3VOLMGT), volmgt_release(3VOLMGT), attributes(5), hal(5)

SunOS 5.11							    8 Mar 2007					   volmgt_feature_enabled(3VOLMGT)