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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

This function is obsolete. The management of removable media by the Volume Management feature, including vold, has been replaced by software that supports the Hardware Abstraction Layer (HAL).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.

volmgt_inuse() checks whether volume management is managing the specified pathname.  

RETURN VALUES

The return from this function is undefined.  

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\n");
} else {
       (void) printf("volmgt is NOT managing diskette 0\n");
}

ATTRIBUTES

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

ATTRIBUTE TYPE ATTRIBUTE VALUE MT-Level MT-Safe Interface Stability

SEE ALSO

cc(1B), open(2), stat(2), errno(3C), volmgt_check(3VOLMGT), volmgt_running(3VOLMGT), attributes(5), hal(5)  

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.

Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUES

ERRORS

EXAMPLES

ATTRIBUTES

SEE ALSO

NOTES

Партнёры:

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