GETFSSPECNAME(3) NetBSD Library Functions Manual GETFSSPECNAME(3)
getfsspecname -- get the underlying wedge name from a label
System Utilities Library (libutil, -lutil)
#include <util.h> const char * getfsspecname(char *buf, size_t buflen, const char *spec);
The getfsspecname() function translates an fs_spec field in the spec argument of the form ``NAME=wedgename'' to the underlying dk(4) device node, and places the resulting pathname in buf up to len buflen. If the spec argument starts with ``ROOT.'', a path in the form ``/dev/[root_device][suffix]'' is copied to buf, where [root_device] is the value of the ``kern.root_device'' sysctl and [suffix] is the charac- ters following ``ROOT.'' in the spec argument. If the spec argument is not of the form ``NAME=wedgename'' and it doesn't start with ``ROOT.'', spec is copied to buf and returned.
On success the absolute pathname of the underlying wedge device is returned, or the original spec argument. On failure NULL is returned and buf contains the reason for the error.
The getfsspecname() function appeared in NetBSD 7.0. NetBSD 9.0 December 28, 2018 NetBSD 9.0
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