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man pages section 3: Extended Library Functions, Volume 4

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Updated: July 2017
 
 

volmgt_symdev(3VOLMGT)

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This function is obsolete. The management of removable media by the Volume Management feature, including vold, has been replaced by software that supports the Hardware Abstraction Layer (HAL).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 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)