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Annotation of sys/compat/linux/linux_resource.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: linux_resource.c,v 1.4 2003/06/03 20:49:28 deraadt Exp $      */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2000 Niklas Hallqvist
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  *
        !            16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            19:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            20:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            21:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            22:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            23:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            24:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            25:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            26:  */
        !            27:
        !            28: /*
        !            29:  * Linux "resource" syscall emulation
        !            30:  */
        !            31:
        !            32: #include <sys/param.h>
        !            33: #include <sys/systm.h>
        !            34: #include <sys/mount.h>
        !            35: #include <sys/proc.h>
        !            36: #include <sys/resource.h>
        !            37: #include <sys/resourcevar.h>
        !            38: #include <sys/syscallargs.h>
        !            39:
        !            40: #include <compat/linux/linux_types.h>
        !            41: #include <compat/linux/linux_resource.h>
        !            42: #include <compat/linux/linux_signal.h>
        !            43: #include <compat/linux/linux_syscallargs.h>
        !            44:
        !            45: /* linux_resource.c */
        !            46: int    linux_to_bsd_rlimit(u_int);
        !            47: int    linux_dogetrlimit(struct proc *, void *, register_t *, rlim_t);
        !            48:
        !            49: static u_int linux_to_bsd_rlimit_map[] = {
        !            50:        RLIMIT_CPU,
        !            51:        RLIMIT_FSIZE,
        !            52:        RLIMIT_DATA,
        !            53:        RLIMIT_STACK,
        !            54:        RLIMIT_CORE,
        !            55:        RLIMIT_RSS,
        !            56:        RLIMIT_NPROC,
        !            57:        RLIMIT_NOFILE,
        !            58:        RLIMIT_MEMLOCK,
        !            59:        RLIM_NLIMITS            /* LINUX_RLIMIT_AS not supported */
        !            60: };
        !            61:
        !            62: int
        !            63: linux_to_bsd_rlimit(which)
        !            64:        u_int which;
        !            65: {
        !            66:        if (which >= LINUX_RLIM_NLIMITS)
        !            67:                return (RLIM_NLIMITS);
        !            68:        return (linux_to_bsd_rlimit_map[which]);
        !            69: }
        !            70:
        !            71: int
        !            72: linux_sys_setrlimit(p, v, retval)
        !            73:        struct proc *p;
        !            74:        void *v;
        !            75:        register_t *retval;
        !            76: {
        !            77:        struct linux_sys_setrlimit_args /* {
        !            78:                syscallarg(u_int) which;
        !            79:                syscallarg(struct linux_rlimit *) rlp;
        !            80:        } */ *uap = v;
        !            81:
        !            82:        SCARG(uap, which) = linux_to_bsd_rlimit(SCARG(uap, which));
        !            83:        if (SCARG(uap, which) == RLIM_NLIMITS)
        !            84:                return (EINVAL);
        !            85:        return (compat_43_sys_setrlimit(p, v, retval));
        !            86: }
        !            87:
        !            88: int
        !            89: linux_dogetrlimit(p, v, retval, max)
        !            90:        struct proc *p;
        !            91:        void *v;
        !            92:        register_t *retval;
        !            93:        rlim_t max;
        !            94: {
        !            95:        struct linux_sys_getrlimit_args /* {
        !            96:                syscallarg(u_int) which;
        !            97:                syscallarg(struct linux_rlimit *) rlp;
        !            98:        } */ *uap = v;
        !            99:        u_int which;
        !           100:        struct linux_rlimit rlim;
        !           101:
        !           102:        which = linux_to_bsd_rlimit(SCARG(uap, which));
        !           103:        if (which == RLIM_NLIMITS)
        !           104:                return (EINVAL);
        !           105:
        !           106:        rlim.rlim_cur = MIN(p->p_rlimit[which].rlim_cur, max);
        !           107:        rlim.rlim_max = MIN(p->p_rlimit[which].rlim_max, max);
        !           108:        return (copyout(&rlim, SCARG(uap, rlp), sizeof rlim));
        !           109: }
        !           110:
        !           111: int
        !           112: linux_sys_getrlimit(p, v, retval)
        !           113:        struct proc *p;
        !           114:        void *v;
        !           115:        register_t *retval;
        !           116: {
        !           117:        return (linux_dogetrlimit(p, v, retval, LINUX_OLD_RLIM_INFINITY));
        !           118: }
        !           119:
        !           120: int
        !           121: linux_sys_ugetrlimit(p, v, retval)
        !           122:        struct proc *p;
        !           123:        void *v;
        !           124:        register_t *retval;
        !           125: {
        !           126:        return (linux_dogetrlimit(p, v, retval, LINUX_RLIM_INFINITY));
        !           127: }