1 /*- 2 * Copyright (c) 2001 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include "opt_compat.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/proc.h> 36 #include <sys/sysproto.h> 37 38 #include <machine/../linux/linux.h> 39 #include <machine/../linux/linux_proto.h> 40 #include <compat/linux/linux_util.h> 41 42 #define LINUX_CTL_KERN 1 43 #define LINUX_CTL_VM 2 44 #define LINUX_CTL_NET 3 45 #define LINUX_CTL_PROC 4 46 #define LINUX_CTL_FS 5 47 #define LINUX_CTL_DEBUG 6 48 #define LINUX_CTL_DEV 7 49 #define LINUX_CTL_BUS 8 50 51 /* CTL_KERN names */ 52 #define LINUX_KERN_OSTYPE 1 53 #define LINUX_KERN_OSRELEASE 2 54 #define LINUX_KERN_OSREV 3 55 #define LINUX_KERN_VERSION 4 56 57 static int 58 handle_string(struct l___sysctl_args *la, char *value) 59 { 60 int error; 61 62 if (la->oldval != NULL) { 63 l_int len = strlen(value); 64 error = copyout(value, la->oldval, len + 1); 65 if (!error && la->oldlenp != NULL) 66 error = copyout(&len, la->oldlenp, sizeof(len)); 67 if (error) 68 return (error); 69 } 70 71 if (la->newval != NULL) 72 return (ENOTDIR); 73 74 return (0); 75 } 76 77 int 78 linux_sysctl(struct thread *td, struct linux_sysctl_args *args) 79 { 80 struct l___sysctl_args la; 81 l_int *mib; 82 int error, i; 83 caddr_t sg; 84 85 error = copyin((caddr_t)args->args, &la, sizeof(la)); 86 if (error) 87 return (error); 88 89 if (la.nlen == 0 || la.nlen > LINUX_CTL_MAXNAME) 90 return (ENOTDIR); 91 92 sg = stackgap_init(); 93 mib = stackgap_alloc(&sg, la.nlen * sizeof(l_int)); 94 error = copyin(la.name, mib, la.nlen * sizeof(l_int)); 95 if (error) 96 return (error); 97 98 switch (mib[0]) { 99 case LINUX_CTL_KERN: 100 if (la.nlen < 2) 101 break; 102 103 switch (mib[1]) { 104 case LINUX_KERN_VERSION: 105 return (handle_string(&la, version)); 106 default: 107 break; 108 } 109 break; 110 default: 111 break; 112 } 113 114 printf("linux: sysctl: unhandled name="); 115 for (i = 0; i < la.nlen; i++) 116 printf("%c%d", (i) ? ',' : '{', mib[i]); 117 printf("}\n"); 118 119 return (ENOTDIR); 120 } 121