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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 file system node path is created with the file	type and access	per-
     missions 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.

     The mknod() system	call 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
     The mknod() system	call 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]		The path argument points outside the process's allo-
			cated 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
     The mknod() function appeared in Version 6	AT&T UNIX.

FreeBSD	6.0			 June 4, 1993			   FreeBSD 6.0

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | HISTORY

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