media_getid(3VOLMGT) Volume Management Library Functions media_getid(3VOLMGT)NAMEmedia_getid - return the id of a piece of media
SYNOPSIS
cc [flag ...] file ...−lvolgmt [library ...]
#include <volmgt.h>
ulonglong_t media_getid(char *vol_path);
DESCRIPTION
This function is obsolete. The management of removable media by the
Volume Management feature, including vold, has been replaced by soft‐
ware 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 unde‐
fined.
media_getid() returns the id of a piece of media. Volume management
must be running. See volmgt_running(3VOLMGT).
PARAMETERS
vol_path Path to the block or character special device.
RETURN VALUES
The return from this function is undefined.
EXAMPLES
Example 1 Using media_getid()
The following example first checks if volume management is running,
then checks the volume management name space for path, and then returns
the id for the piece of media.
char *path;
...
if (volmgt_running()) {
if (volmgt_ownspath(path)) {
(void) printf("id of %s is %lld\n",
path, media_getid(path));
}
}
If a program using media_getid() does not check whether or not volume
management is running, then any NULL return value will be ambiguous, as
it could mean that either volume management does not have path in its
name space, or volume management is not running.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Safe │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Obsolete │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOvolmgt_ownspath(3VOLMGT),volmgt_running(3VOLMGT),attributes(5), hal(5)SunOS 5.11 8 Mar 2007 media_getid(3VOLMGT)