text: /*	Derived from:
   *      $NetBSD: svr4_resource.c,v 1.3 1998/12/13 18:00:52 christos Exp $
   */
  
  /*-
   * Original copyright:
   *
   * Copyright (c) 1998 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by Christos Zoulas.
   *
   * 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 NetBSD
   *        Foundation, Inc. and its contributors.
   * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
   * 
   * $FreeBSD: src/sys/compat/svr4/svr4_resource.c,v 1.11.2.1 2002/12/19 09:40:07 alfred Exp $
   */
  
  /*
   * Portions of this software have been derived from software contributed
   * to the FreeBSD Project by Mark Newton.
   *
   * Copyright (c) 1999 Mark Newton
   * 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. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
   */
  
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/file.h>
  #include <sys/lock.h>
  #include <sys/mutex.h>
  #include <sys/proc.h>
  #include <sys/resource.h>
  #include <sys/resourcevar.h>
  
  #include <compat/svr4/svr4.h>
  #include <compat/svr4/svr4_types.h>
  #include <compat/svr4/svr4_resource.h>
  #include <compat/svr4/svr4_signal.h>
  #include <compat/svr4/svr4_proto.h>
  #include <compat/svr4/svr4_util.h>
  
  static __inline int svr4_to_native_rl(int);
  
  static __inline int
  svr4_to_native_rl(rl)
  	int rl;
  {
  	switch (rl) {
  	case SVR4_RLIMIT_CPU:
  		return RLIMIT_CPU;
  	case SVR4_RLIMIT_FSIZE:
  		return RLIMIT_FSIZE;
  	case SVR4_RLIMIT_DATA:
  		return RLIMIT_DATA;
  	case SVR4_RLIMIT_STACK:
  		return RLIMIT_STACK;
  	case SVR4_RLIMIT_CORE:
  		return RLIMIT_CORE;
  	case SVR4_RLIMIT_NOFILE:
  		return RLIMIT_NOFILE;
  	case SVR4_RLIMIT_VMEM:
  		return RLIMIT_VMEM;
  	default:
  		return -1;
  	}
  }
  
  /*
   * Check if the resource limit fits within the BSD range and it is not
   * one of the magic SVR4 limit values
   */
  #define OKLIMIT(l) (((int32_t)(l)) >= 0 && ((int32_t)(l)) < 0x7fffffff && \
  	((svr4_rlim_t)(l)) != SVR4_RLIM_INFINITY && \
  	((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_CUR && \
  	((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_MAX)
  
  #define OKLIMIT64(l) (((rlim_t)(l)) >= 0 && ((rlim_t)(l)) < RLIM_INFINITY && \
  	((svr4_rlim64_t)(l)) != SVR4_RLIM64_INFINITY && \
  	((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_CUR && \
  	((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_MAX)
  
  int
  svr4_sys_getrlimit(td, uap)
  	register struct thread *td;
  	struct svr4_sys_getrlimit_args *uap;
  {
  	int rl = svr4_to_native_rl(uap->which);
  	struct rlimit blim;
  	struct svr4_rlimit slim;
  
  	if (rl == -1)
  		return EINVAL;
  
  	/* For p_rlimit. */
  	mtx_assert(&Giant, MA_OWNED);
  	blim = td->td_proc->p_rlimit[rl];
  
  	/*
  	 * Our infinity, is their maxfiles.
  	 */
  	if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
  		blim.rlim_max = maxfiles;
  
  	/*
  	 * If the limit can be be represented, it is returned.
  	 * Otherwise, if rlim_cur == rlim_max, return RLIM_SAVED_MAX
  	 * else return RLIM_SAVED_CUR
  	 */
  	if (blim.rlim_max == RLIM_INFINITY)
  		slim.rlim_max = SVR4_RLIM_INFINITY;
  	else if (OKLIMIT(blim.rlim_max))
  		slim.rlim_max = (svr4_rlim_t) blim.rlim_max;
  	else
  		slim.rlim_max = SVR4_RLIM_SAVED_MAX;
  
  	if (blim.rlim_cur == RLIM_INFINITY)
  		slim.rlim_cur = SVR4_RLIM_INFINITY;
  	else if (OKLIMIT(blim.rlim_cur))
  		slim.rlim_cur = (svr4_rlim_t) blim.rlim_cur;
  	else if (blim.rlim_max == blim.rlim_cur)
  		slim.rlim_cur = SVR4_RLIM_SAVED_MAX;
  	else
  		slim.rlim_cur = SVR4_RLIM_SAVED_CUR;
  
  	return copyout(&slim, uap->rlp, sizeof(*uap->rlp));
  }
  
  
  int
  svr4_sys_setrlimit(td, uap)
  	register struct thread *td;
  	struct svr4_sys_setrlimit_args *uap;
  {
  	int rl = svr4_to_native_rl(uap->which);
  	struct rlimit blim, *limp;
  	struct svr4_rlimit slim;
  	int error;
  
  	if (rl == -1)
  		return EINVAL;
  
  	/* For p_rlimit. */
  	mtx_assert(&Giant, MA_OWNED);
  	limp = &td->td_proc->p_rlimit[rl];
  
  	if ((error = copyin(uap->rlp, &slim, sizeof(slim))) != 0)
  		return error;
  
  	/*
  	 * if the limit is SVR4_RLIM_INFINITY, then we set it to our
  	 * unlimited.
  	 * We should also: If it is SVR4_RLIM_SAVED_MAX, we should set the
  	 * new limit to the corresponding saved hard limit, and if
  	 * it is equal to SVR4_RLIM_SAVED_CUR, we should set it to the
  	 * corresponding saved soft limit.
  	 *
  	 */
  	if (slim.rlim_max == SVR4_RLIM_INFINITY)
  		blim.rlim_max = RLIM_INFINITY;
  	else if (OKLIMIT(slim.rlim_max))
  		blim.rlim_max = (rlim_t) slim.rlim_max;
  	else if (slim.rlim_max == SVR4_RLIM_SAVED_MAX)
  		blim.rlim_max = limp->rlim_max;
  	else if (slim.rlim_max == SVR4_RLIM_SAVED_CUR)
  		blim.rlim_max = limp->rlim_cur;
  
  	if (slim.rlim_cur == SVR4_RLIM_INFINITY)
  		blim.rlim_cur = RLIM_INFINITY;
  	else if (OKLIMIT(slim.rlim_cur))
  		blim.rlim_cur = (rlim_t) slim.rlim_cur;
  	else if (slim.rlim_cur == SVR4_RLIM_SAVED_MAX)
  		blim.rlim_cur = limp->rlim_max;
  	else if (slim.rlim_cur == SVR4_RLIM_SAVED_CUR)
  		blim.rlim_cur = limp->rlim_cur;
  
  	return dosetrlimit(td, rl, &blim);
  }
  
  
  int
  svr4_sys_getrlimit64(td, uap)
  	register struct thread *td;
  	struct svr4_sys_getrlimit64_args *uap;
  {
  	int rl = svr4_to_native_rl(uap->which);
  	struct rlimit blim;
  	struct svr4_rlimit64 slim;
  
  	if (rl == -1)
  		return EINVAL;
  
  	/* For p_rlimit. */
  	mtx_assert(&Giant, MA_OWNED);
  	blim = td->td_proc->p_rlimit[rl];
  
  	/*
  	 * Our infinity, is their maxfiles.
  	 */
  	if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
  		blim.rlim_max = maxfiles;
  
  	/*
  	 * If the limit can be be represented, it is returned.
  	 * Otherwise, if rlim_cur == rlim_max, return SVR4_RLIM_SAVED_MAX
  	 * else return SVR4_RLIM_SAVED_CUR
  	 */
  	if (blim.rlim_max == RLIM_INFINITY)
  		slim.rlim_max = SVR4_RLIM64_INFINITY;
  	else if (OKLIMIT64(blim.rlim_max))
  		slim.rlim_max = (svr4_rlim64_t) blim.rlim_max;
  	else
  		slim.rlim_max = SVR4_RLIM64_SAVED_MAX;
  
  	if (blim.rlim_cur == RLIM_INFINITY)
  		slim.rlim_cur = SVR4_RLIM64_INFINITY;
  	else if (OKLIMIT64(blim.rlim_cur))
  		slim.rlim_cur = (svr4_rlim64_t) blim.rlim_cur;
  	else if (blim.rlim_max == blim.rlim_cur)
  		slim.rlim_cur = SVR4_RLIM64_SAVED_MAX;
  	else
  		slim.rlim_cur = SVR4_RLIM64_SAVED_CUR;
  
  	return copyout(&slim, uap->rlp, sizeof(*uap->rlp));
  }
  
  
  int
  svr4_sys_setrlimit64(td, uap)
  	register struct thread *td;
  	struct svr4_sys_setrlimit64_args *uap;
  {
  	int rl = svr4_to_native_rl(uap->which);
  	struct rlimit blim, *limp;
  	struct svr4_rlimit64 slim;
  	int error;
  
  	if (rl == -1)
  		return EINVAL;
  
  	/* For p_rlimit. */
  	mtx_assert(&Giant, MA_OWNED);
  	limp = &td->td_proc->p_rlimit[rl];
  
  	if ((error = copyin(uap->rlp, &slim, sizeof(slim))) != 0)
  		return error;
  
  	/*
  	 * if the limit is SVR4_RLIM64_INFINITY, then we set it to our
  	 * unlimited.
  	 * We should also: If it is SVR4_RLIM64_SAVED_MAX, we should set the
  	 * new limit to the corresponding saved hard limit, and if
  	 * it is equal to SVR4_RLIM64_SAVED_CUR, we should set it to the
  	 * corresponding saved soft limit.
  	 *
  	 */
  	if (slim.rlim_max == SVR4_RLIM64_INFINITY)
  		blim.rlim_max = RLIM_INFINITY;
  	else if (OKLIMIT64(slim.rlim_max))
  		blim.rlim_max = (rlim_t) slim.rlim_max;
  	else if (slim.rlim_max == SVR4_RLIM64_SAVED_MAX)
  		blim.rlim_max = limp->rlim_max;
  	else if (slim.rlim_max == SVR4_RLIM64_SAVED_CUR)
  		blim.rlim_max = limp->rlim_cur;
  
  	if (slim.rlim_cur == SVR4_RLIM64_INFINITY)
  		blim.rlim_cur = RLIM_INFINITY;
  	else if (OKLIMIT64(slim.rlim_cur))
  		blim.rlim_cur = (rlim_t) slim.rlim_cur;
  	else if (slim.rlim_cur == SVR4_RLIM64_SAVED_MAX)
  		blim.rlim_cur = limp->rlim_max;
  	else if (slim.rlim_cur == SVR4_RLIM64_SAVED_CUR)
  		blim.rlim_cur = limp->rlim_cur;
  
  	return dosetrlimit(td, rl, &blim);
  }
  