volmgt_check(3VOLMGT) Volume Management Library Functionsvolmgt_check(3VOLMGT)NAMEvolmgt_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 initi‐
ate 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 sup‐
plied 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 TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOcc(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 Manage‐
ment is running.
SunOS 5.10 31 Dec 1996 volmgt_check(3VOLMGT)
