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MKNOD(2)		  FreeBSD System Calls Manual		      MKNOD(2)

NAME
     mknod -- make a special file node

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     int
     mknod(const char *path, mode_t mode, dev_t dev);

DESCRIPTION
     The filesystem node path is created with the file type and access permis-
     sions specified in mode.  The access permissions are modified by the
     process's umask value.

     If mode indicates a block or character special file, dev is a configura-
     tion dependent specification denoting a particular device on the system.
     Otherwise, dev is ignored.

     Mknod() requires super-user privileges.

RETURN VALUES
     The mknod() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS
     Mknod() will fail and the file will be not created if:

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

     [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 component of the
			path prefix.

     [ELOOP]		Too many symbolic links were encountered in translat-
			ing the pathname.

     [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 containing 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 allocated address
			space.

     [EINVAL]		Creating anything else than a block or character spe-
			cial file (or a whiteout) is not supported.

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

HISTORY
     A mknod() function call appeared in Version 6 AT&T UNIX.

FreeBSD 4.9			 June 4, 1993			   FreeBSD 4.9