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This function is obsolete.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vold, has been replaced by software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(7). 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(7) 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(7),
hal(7) March 8, 2007
VOLMGT_SYMNAME(3VOLMGT)