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BSD 2.11 - man page for mknod (bsd section 2)

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MKNOD(2)										 MKNOD(2)

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 spe-
       cial 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.  Otherwise, 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.

       [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 translating the pathname.

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

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

       [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
		      directory.

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

       [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 con-
		      taining 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.

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

4th Berkeley Distribution		   May 23, 1986 				 MKNOD(2)
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