NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | EXAMPLES | ATTRIBUTES | SEE ALSO | NOTES
cc [ flag ... ] file ... -lvolmgt [ library ... ] #include <volmgt.h>int volmgt_inuse(char *pathname);
A non-zero value is returned if Volume Management is managing the specified pathname, otherwise 0 is returned.
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:
Volume Management is not running.
An interrupt signal was detected while checking for the supplied pathname for use.
if (volmgt_inuse("/dev/rdiskette0") != 0) { (void) printf("volmgt is managing diskette 0\n"); } else { (void) printf("volmgt is NOT managing diskette 0\n"); }
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
---|---|
MT-Level | MT-Safe |
cc(1B), vold(1M), open(2), stat(2), errno(3C), volmgt_check(3VOLMGT), volmgt_running(3VOLMGT), attributes(5), volfs(7FS)
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.
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | EXAMPLES | ATTRIBUTES | SEE ALSO | NOTES