/* $NetBSD: svr4_resource.c,v 1.12 2006/11/16 01:32:44 christos Exp $ */ /*- * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: svr4_resource.c,v 1.12 2006/11/16 01:32:44 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include static inline int svr4_to_native_rl __P((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_RSS; 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(struct lwp *l, void *v, register_t *retval) { struct svr4_sys_getrlimit_args *uap = v; int rl = svr4_to_native_rl(SCARG(uap, which)); struct proc *p = l->l_proc; struct rlimit blim; struct svr4_rlimit slim; if (rl == -1) return EINVAL; blim = p->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, SCARG(uap, rlp), sizeof(*SCARG(uap, rlp))); } int svr4_sys_setrlimit(struct lwp *l, void *v, register_t *retval) { struct svr4_sys_setrlimit_args *uap = v; int rl = svr4_to_native_rl(SCARG(uap, which)); struct rlimit blim, *limp; struct svr4_rlimit slim; int error; if (rl == -1) return EINVAL; limp = &l->l_proc->p_rlimit[rl]; if ((error = copyin(SCARG(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(l, l->l_proc, rl, &blim); } int svr4_sys_getrlimit64(struct lwp *l, void *v, register_t *retval) { struct svr4_sys_getrlimit64_args *uap = v; int rl = svr4_to_native_rl(SCARG(uap, which)); struct proc *p = l->l_proc; struct rlimit blim; struct svr4_rlimit64 slim; if (rl == -1) return EINVAL; blim = p->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, SCARG(uap, rlp), sizeof(*SCARG(uap, rlp))); } int svr4_sys_setrlimit64(struct lwp *l, void *v, register_t *retval) { struct svr4_sys_setrlimit64_args *uap = v; int rl = svr4_to_native_rl(SCARG(uap, which)); struct rlimit blim, *limp; struct svr4_rlimit64 slim; int error; if (rl == -1) return EINVAL; limp = &l->l_proc->p_rlimit[rl]; if ((error = copyin(SCARG(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(l, l->l_proc, rl, &blim); }