MKNOD(2-BSD)        RISC/os Reference Manual         MKNOD(2-BSD)



NAME
     mknod - make a special file

SYNOPSIS
     mknod(path, mode, dev)
     char *path;
     int mode, dev;

DESCRIPTION
     mknod creates a new file whose name is path. The mode of the
     new file (including special file bits) is initialized from
     mode.  (The protection part of the mode is modified by the
     process's mode mask (see umask(2))).  The first block
     pointer of the i-node is initialized from dev and is used to
     specify which device the special file refers to.

     If mode indicates a block or character special file, dev is
     a configuration dependent specification of a character or
     block I/O device.  If mode does not indicate a block special
     or character special device, dev is ignored.

     mknod may be invoked only by the super-user.

RETURN VALUE
     Upon successful completion a value of 0 is returned.  Other-
     wise, a value of -1 is returned and errno is set to indicate
     the error.

ERRORS
     mknod will fail and the file mode will be unchanged if:

     [ENOTDIR]           A component of the path prefix is not a
                         directory.

     [EINVAL]            The pathname contains a character with
                         the high-order bit set.

     [EPERM]             Same as [EINVAL].

     [ENAMETOOLONG]      A component of a pathname exceeded 255
                         characters, or an entire path name
                         exceeded 1023 characters.

     [ENOENT]            A component of the path prefix does not
                         exist.

     [EACCES]            Search permission is denied for a com-
                         ponent of the path prefix.

     [ELOOP]             Too many symbolic links were encountered
                         in translating the pathname.




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MKNOD(2-BSD)        RISC/os Reference Manual         MKNOD(2-BSD)



     [EPERM]             The process's effective user ID is not
                         super-user.

     [EIO]               An I/O error occurred while making the
                         directory entry or allocating the inode.

     [ENOSPC]            The directory in which the entry for the
                         new node is being placed cannot be
                         extended because there is no space left
                         on the file system containing the direc-
                         tory.

     [ENOSPC]            There are no free inodes on the file
                         system on which the node is being
                         created.

     [EDQUOT]            The directory in which the entry for the
                         new node is being placed cannot be
                         extended because the user's quota of
                         disk blocks on the file system contain-
                         ing the directory has been exhausted.

     [EDQUOT]            The user's quota of inodes on the file
                         system on which the node is being
                         created has been exhausted.

     [EROFS]             The named file resides on a read-only
                         file system.

     [EEXIST]            The named file exists.

     [EFAULT]            path points outside the process's allo-
                         cated address space.

SEE ALSO
     chmod(2), stat(2), umask(2)



















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