resourcevar.h

很好的一个嵌入式linux平台下的bootloader

/* $Id: resourcevar.h,v 1.2 1996/01/16 14:22:38 chris Exp $ */
/*
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)resourcevar.h	7.1 (Berkeley) 5/9/91
 */

#ifndef	_RESOURCEVAR_H_		/* tmp for user.h */
#define	_RESOURCEVAR_H_

/*
 * Kernel per-process accounting / statistics
 * (not necessarily resident except when running).
 */
struct pstats {
	struct	itimerval p_timer[3];	/* virtual-time timers */
};

/*
 * Kernel shareable process resource limits.  Because this structure
 * is moderately large but changes infrequently, it is normally
 * shared copy-on-write after forks.  If a group of processes
 * ("threads") share modifications, the PL_SHAREMOD flag is set,
 * and a copy must be made for the child of a new fork that isn't
 * sharing modifications to the limits.
 */
struct plimit {
	struct	rlimit pl_rlimit[RLIM_NLIMITS];
	int	p_lflags;		/* below */
	int	p_refcnt;		/* number of references */
};

/* pl_lflags: */
#define	PL_SHAREMOD	0x01		/* modifications are shared */

/* make copy of plimit structure */
struct	plimit *limcopy __P((struct plimit *lim));
#endif	/* !_RESOURCEVAR_H_ */