VOLMGT_SYMNAME(3VOLMGT) Volume Management Library Functions


NAME


volmgt_symname, volmgt_symdev - convert between Volume Management
symbolic names, and the devices that correspond to them

SYNOPSIS


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

char *volmgt_symname(char *pathname);


char *volmgt_symdev(char *symname);


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This function is obsolete.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Volume Management feature, including vold, has been replaced by software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.


These two routines compliment each other, translating between Volume
Management's symbolic name for a device, called a symname, and the /dev
pathname for that same device.


volmgt_symname() converts a supplied /dev pathname to a symname, Volume
Management's idea of that device's symbolic name.


volmgt_symdev() does the opposite conversion, converting between a
symname, Volume Management's idea of a device's symbolic name for a
volume, to the /dev pathname for that device.

RETURN VALUES


The return from this function is undefined.

ERRORS


volmgt_symname() can fail, returning a null string pointer, if a stat(2)
of the supplied pathname fails, or if 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 trying to convert the
supplied pathname to a symname.


volmgt_symdev() can fail if 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 trying to convert the
supplied symname to a /dev pathname.


EXAMPLES


Example 1: Testing Floppies




The following tests how many floppies Volume Management currently sees in
floppy drives (up to 10):


for (i=0; i < 10; i++) {
(void) sprintf(path, "floppy%d", i);
if (volmgt_symdev(path) != NULL) {
(void) printf("volume %s is in drive %d\n",
path, i);
}
}


Example 2: Finding The Symbolic Name




This code finds out what symbolic name (if any) Volume Management has for
/dev/rdsk/c0t6d0s2:


if ((nm = volmgt_symname("/dev/rdsk/c0t6d0s2")) == NULL) {
(void) printf("path not managed\n");
} else {
(void) printf("path managed as %s\n", nm);
}


ATTRIBUTES


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


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
|Interface Stability | Obsolete |
+--------------------+-----------------+

SEE ALSO


open(2), stat(2), free(3C), malloc(3C), volmgt_check(3VOLMGT),
volmgt_inuse(3VOLMGT), volmgt_running(3VOLMGT), attributes(5), hal(5)


March 8, 2007 VOLMGT_SYMNAME(3VOLMGT)