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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 available, 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