Content-type: text/html Man page of volmgt_check

volmgt_check

Section: Volume Management Library Functions (3VOLMGT)
Updated: 31 Dec 1996
Index Return to Main Contents
 

NAME

volmgt_check - have Volume Management check for media  

SYNOPSIS

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

int volmgt_check(char *pathname);  

DESCRIPTION

This routine asks Volume Management to check the specified pathname and determine if new media has been inserted in that drive.

If a null pointer is passed in, then Volume Management will check each device it is managing that can be checked.

If new media is found, volmgt_check() tells Volume Management to initiate any "actions" specified in /etc/vold.conf (see vold.conf(4)).  

RETURN VALUES

This routine returns 0 if no media was found, and a non-zero value if any media was found.  

ERRORS

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

ENXIO Volume Management is not running.

EINTR An interrupt signal was detected while checking for media.

 

EXAMPLES

Example 1: Checking If Any New Media Is Inserted

To check if any drive managed by Volume Management has any new media inserted in it:

if (volmgt_check(NULL)) {
        (void) printf("Volume Management found media\n");
}

This would also request Volume Management to take whatever action was specified in /etc/vold.conf for any media found.  

ATTRIBUTES

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

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelMT-Safe

 

SEE ALSO

cc(1B), volcheck(1), vold(1M), open(2), stat(2), volmgt_inuse(3VOLMGT), volmgt_running(3VOLMGT), vold.conf(4), attributes(5), volfs(7FS)  

NOTES

Volume Management must be running for this routine to work.

Since volmgt_check() returns 0 for two different cases (both when no media is found, 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

This document was created by man2html, using the manual pages.
Time: 02:38:46 GMT, October 02, 2010