VOLMGT_INUSE(3VOLMGT) Volume Management Library Functions
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This function is obsolete.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vold, has been replaced by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(7). 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(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
|Interface Stability | Obsolete |
+--------------------+-----------------+
SEE ALSO
open(2),
stat(2),
errno(3C),
volmgt_check(3VOLMGT),
volmgt_running(3VOLMGT),
attributes(7),
hal(7)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.
March 8, 2007 VOLMGT_INUSE(3VOLMGT)
