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See http://www.freebsd.org/~newton/freebsd-svr4 for limitations, capabilities, history and TO-DO list.
312 lines
9.7 KiB
C
312 lines
9.7 KiB
C
/* Derived from:
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* $NetBSD: svr4_resource.c,v 1.3 1998/12/13 18:00:52 christos Exp $
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*/
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/*-
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* Original copyright:
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*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Portions of this software have been derived from software contributed
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* to the FreeBSD Project by Mark Newton.
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*
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* Copyright (c) 1999 Mark Newton
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <svr4/svr4_types.h>
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#include <svr4/svr4_resource.h>
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#include <svr4/svr4_signal.h>
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#include <svr4/svr4_proto.h>
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#include <svr4/svr4_util.h>
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static __inline int svr4_to_native_rl __P((int));
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static __inline int
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svr4_to_native_rl(rl)
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int rl;
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{
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switch (rl) {
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case SVR4_RLIMIT_CPU:
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return RLIMIT_CPU;
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case SVR4_RLIMIT_FSIZE:
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return RLIMIT_FSIZE;
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case SVR4_RLIMIT_DATA:
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return RLIMIT_DATA;
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case SVR4_RLIMIT_STACK:
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return RLIMIT_STACK;
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case SVR4_RLIMIT_CORE:
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return RLIMIT_CORE;
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case SVR4_RLIMIT_NOFILE:
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return RLIMIT_NOFILE;
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case SVR4_RLIMIT_VMEM:
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return RLIMIT_RSS;
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default:
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return -1;
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}
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}
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/*
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* Check if the resource limit fits within the BSD range and it is not
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* one of the magic SVR4 limit values
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*/
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#define OKLIMIT(l) (((int32_t)(l)) >= 0 && ((int32_t)(l)) < 0x7fffffff && \
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((svr4_rlim_t)(l)) != SVR4_RLIM_INFINITY && \
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((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_CUR && \
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((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_MAX)
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#define OKLIMIT64(l) (((rlim_t)(l)) >= 0 && ((rlim_t)(l)) < RLIM_INFINITY && \
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((svr4_rlim64_t)(l)) != SVR4_RLIM64_INFINITY && \
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((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_CUR && \
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((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_MAX)
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int
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svr4_sys_getrlimit(p, uap)
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register struct proc *p;
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struct svr4_sys_getrlimit_args *uap;
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{
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int rl = svr4_to_native_rl(SCARG(uap, which));
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struct rlimit blim;
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struct svr4_rlimit slim;
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if (rl == -1)
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return EINVAL;
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blim = p->p_rlimit[rl];
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/*
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* Our infinity, is their maxfiles.
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*/
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if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
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blim.rlim_max = maxfiles;
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/*
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* If the limit can be be represented, it is returned.
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* Otherwise, if rlim_cur == rlim_max, return RLIM_SAVED_MAX
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* else return RLIM_SAVED_CUR
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*/
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if (blim.rlim_max == RLIM_INFINITY)
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slim.rlim_max = SVR4_RLIM_INFINITY;
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else if (OKLIMIT(blim.rlim_max))
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slim.rlim_max = (svr4_rlim_t) blim.rlim_max;
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else
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slim.rlim_max = SVR4_RLIM_SAVED_MAX;
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if (blim.rlim_cur == RLIM_INFINITY)
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slim.rlim_cur = SVR4_RLIM_INFINITY;
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else if (OKLIMIT(blim.rlim_cur))
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slim.rlim_cur = (svr4_rlim_t) blim.rlim_cur;
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else if (blim.rlim_max == blim.rlim_cur)
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slim.rlim_cur = SVR4_RLIM_SAVED_MAX;
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else
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slim.rlim_cur = SVR4_RLIM_SAVED_CUR;
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return copyout(&slim, SCARG(uap, rlp), sizeof(*SCARG(uap, rlp)));
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}
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int
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svr4_sys_setrlimit(p, uap)
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register struct proc *p;
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struct svr4_sys_setrlimit_args *uap;
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{
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int rl = svr4_to_native_rl(SCARG(uap, which));
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struct rlimit blim, *limp;
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struct svr4_rlimit slim;
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int error;
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if (rl == -1)
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return EINVAL;
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limp = &p->p_rlimit[rl];
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if ((error = copyin(SCARG(uap, rlp), &slim, sizeof(slim))) != 0)
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return error;
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/*
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* if the limit is SVR4_RLIM_INFINITY, then we set it to our
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* unlimited.
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* We should also: If it is SVR4_RLIM_SAVED_MAX, we should set the
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* new limit to the corresponding saved hard limit, and if
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* it is equal to SVR4_RLIM_SAVED_CUR, we should set it to the
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* corresponding saved soft limit.
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*
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*/
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if (slim.rlim_max == SVR4_RLIM_INFINITY)
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blim.rlim_max = RLIM_INFINITY;
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else if (OKLIMIT(slim.rlim_max))
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blim.rlim_max = (rlim_t) slim.rlim_max;
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else if (slim.rlim_max == SVR4_RLIM_SAVED_MAX)
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blim.rlim_max = limp->rlim_max;
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else if (slim.rlim_max == SVR4_RLIM_SAVED_CUR)
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blim.rlim_max = limp->rlim_cur;
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if (slim.rlim_cur == SVR4_RLIM_INFINITY)
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blim.rlim_cur = RLIM_INFINITY;
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else if (OKLIMIT(slim.rlim_cur))
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blim.rlim_cur = (rlim_t) slim.rlim_cur;
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else if (slim.rlim_cur == SVR4_RLIM_SAVED_MAX)
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blim.rlim_cur = limp->rlim_max;
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else if (slim.rlim_cur == SVR4_RLIM_SAVED_CUR)
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blim.rlim_cur = limp->rlim_cur;
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return dosetrlimit(p, rl, &blim);
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}
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int
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svr4_sys_getrlimit64(p, uap)
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register struct proc *p;
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struct svr4_sys_getrlimit64_args *uap;
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{
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int rl = svr4_to_native_rl(SCARG(uap, which));
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struct rlimit blim;
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struct svr4_rlimit64 slim;
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if (rl == -1)
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return EINVAL;
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blim = p->p_rlimit[rl];
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/*
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* Our infinity, is their maxfiles.
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*/
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if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
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blim.rlim_max = maxfiles;
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/*
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* If the limit can be be represented, it is returned.
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* Otherwise, if rlim_cur == rlim_max, return SVR4_RLIM_SAVED_MAX
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* else return SVR4_RLIM_SAVED_CUR
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*/
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if (blim.rlim_max == RLIM_INFINITY)
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slim.rlim_max = SVR4_RLIM64_INFINITY;
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else if (OKLIMIT64(blim.rlim_max))
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slim.rlim_max = (svr4_rlim64_t) blim.rlim_max;
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else
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slim.rlim_max = SVR4_RLIM64_SAVED_MAX;
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if (blim.rlim_cur == RLIM_INFINITY)
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slim.rlim_cur = SVR4_RLIM64_INFINITY;
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else if (OKLIMIT64(blim.rlim_cur))
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slim.rlim_cur = (svr4_rlim64_t) blim.rlim_cur;
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else if (blim.rlim_max == blim.rlim_cur)
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slim.rlim_cur = SVR4_RLIM64_SAVED_MAX;
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else
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slim.rlim_cur = SVR4_RLIM64_SAVED_CUR;
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return copyout(&slim, SCARG(uap, rlp), sizeof(*SCARG(uap, rlp)));
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}
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int
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svr4_sys_setrlimit64(p, uap)
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register struct proc *p;
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struct svr4_sys_setrlimit64_args *uap;
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{
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int rl = svr4_to_native_rl(SCARG(uap, which));
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struct rlimit blim, *limp;
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struct svr4_rlimit64 slim;
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int error;
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if (rl == -1)
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return EINVAL;
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limp = &p->p_rlimit[rl];
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if ((error = copyin(SCARG(uap, rlp), &slim, sizeof(slim))) != 0)
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return error;
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/*
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* if the limit is SVR4_RLIM64_INFINITY, then we set it to our
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* unlimited.
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* We should also: If it is SVR4_RLIM64_SAVED_MAX, we should set the
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* new limit to the corresponding saved hard limit, and if
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* it is equal to SVR4_RLIM64_SAVED_CUR, we should set it to the
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* corresponding saved soft limit.
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*
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*/
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if (slim.rlim_max == SVR4_RLIM64_INFINITY)
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blim.rlim_max = RLIM_INFINITY;
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else if (OKLIMIT64(slim.rlim_max))
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blim.rlim_max = (rlim_t) slim.rlim_max;
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else if (slim.rlim_max == SVR4_RLIM64_SAVED_MAX)
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blim.rlim_max = limp->rlim_max;
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else if (slim.rlim_max == SVR4_RLIM64_SAVED_CUR)
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blim.rlim_max = limp->rlim_cur;
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if (slim.rlim_cur == SVR4_RLIM64_INFINITY)
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blim.rlim_cur = RLIM_INFINITY;
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else if (OKLIMIT64(slim.rlim_cur))
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blim.rlim_cur = (rlim_t) slim.rlim_cur;
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else if (slim.rlim_cur == SVR4_RLIM64_SAVED_MAX)
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blim.rlim_cur = limp->rlim_max;
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else if (slim.rlim_cur == SVR4_RLIM64_SAVED_CUR)
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blim.rlim_cur = limp->rlim_cur;
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return dosetrlimit(p, rl, &blim);
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}
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