GETDEVMAJOR(3)          NetBSD Library Functions Manual         GETDEVMAJOR(3)

NAME
     getdevmajor -- get block or character device major number

LIBRARY
     Standard C Library (libc, -lc)

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

     dev_t
     getdevmajor(const char *name, mode_t type);

DESCRIPTION
     The getdevmajor() function returns the major device number of the block
     or character device specified by name and a file type matching the one
     encoded in type which must be one of S_IFBLK or S_IFCHR.

RETURN VALUES
     If no device matches the specified values, no information is available,
     or an error occurs, (dev_t)~0 is returned and errno is set to indicate
     the error.

EXAMPLES
     To retrieve the major number for pty(4) slave devices (aka pts devices):

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

           dev_t pts;
           pts = getdevmajor("pts", S_IFCHR);

     To retrieve the major numbers for the block and character wd(4) devices:

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

           dev_t c, b;
           c = getdevmajor("wd", S_IFCHR);
           b = getdevmajor("wd", S_IFBLK);

ERRORS
     The getdevmajor() function may fail and set errno for any of the errors
     specified for the library functions malloc(3) and sysctlbyname(3).  In
     addition, the following errors may be reported:

     [EINVAL]           The value of the major argument is not S_IFCHR or
                        S_IFBLK.

     [ENOENT]           The named device is not found.

SEE ALSO
     stat(2), devname(3), malloc(3), sysctlbyname(3)

HISTORY
     The getdevmajor() function call appeared in NetBSD 3.0.

NetBSD 5.0_STABLE              December 15, 2004             NetBSD 5.0_STABLE
