devname(3) BSD Library Functions Manual devname(3)
NAME
devname, devname_r -- get device name
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/stat.h>
#include <stdlib.h>
char *
devname(dev_t dev, mode_t type);
char *
devname_r(dev_t dev, mode_t type, char *buf, int len);
DESCRIPTION
The devname() function returns a pointer to the name of the block or
character device in ``/dev'' with a device number of dev, and a file type
matching the one encoded in type which must be one of S_IFBLK or S_IFCHR.
If no device matches the specified values, or no information is avail-
able, NULL is returned.
The devname() function uses a static buffer, which will be overwritten on
subsequent calls. The devname_r() functions takes a buffer and length as
arguments to avoid this problem.
The traditional display for applications when no device is found is the
string ``??''.
SEE ALSO
stat(2), dev_mkdb(8)
HISTORY
The devname() function call appeared in 4.4BSD.
BSD October 25, 2004 BSD
Mac OS X 10.8 - Generated Mon Aug 27 16:00:49 CDT 2012