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Annotation of sys/compat/linux/linux_resource.c, Revision 1.1.1.1

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: }