devname(3) - NetBSD Manual Pages

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DEVNAME(3)              NetBSD Library Functions Manual             DEVNAME(3)


NAME

     devname -- get device name


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <stdlib.h>
     #include <sys/stat.h>

     char *
     devname(dev_t dev, mode_t type);


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.
     The device name is cached so that multiple calls with the same dev and
     type do not require additional queries of the device database file.  If
     no device matches the specified values, or no information is available,
     NULL is returned.

     The traditional display for applications when no device is found is the
     string ``??''.


FILES

     /var/run/dev.db  Device database file.


SEE ALSO

     stat(2), dev_mkdb(8)


HISTORY

     The devname function call appeared in 4.4BSD.

NetBSD 5.1                      April 29, 1995                      NetBSD 5.1