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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_compat.h" 33 34 #include <sys/param.h> 35 #include <sys/lock.h> 36 #include <sys/malloc.h> 37 #include <sys/mutex.h> 38 #include <sys/proc.h> 39 #include <sys/sysctl.h> 40 #include <sys/systm.h> 41 #include <sys/sbuf.h> 42 43 #ifdef COMPAT_LINUX32 44 #include <machine/../linux32/linux.h> 45 #include <machine/../linux32/linux32_proto.h> 46 #else 47 #include <machine/../linux/linux.h> 48 #include <machine/../linux/linux_proto.h> 49 #endif 50 51 #include <compat/linux/linux_util.h> 52 53 #define LINUX_CTL_KERN 1 54 #define LINUX_CTL_VM 2 55 #define LINUX_CTL_NET 3 56 #define LINUX_CTL_PROC 4 57 #define LINUX_CTL_FS 5 58 #define LINUX_CTL_DEBUG 6 59 #define LINUX_CTL_DEV 7 60 #define LINUX_CTL_BUS 8 61 62 /* CTL_KERN names */ 63 #define LINUX_KERN_OSTYPE 1 64 #define LINUX_KERN_OSRELEASE 2 65 #define LINUX_KERN_OSREV 3 66 #define LINUX_KERN_VERSION 4 67 68 static int 69 handle_string(struct l___sysctl_args *la, char *value) 70 { 71 int error; 72 73 if (la->oldval != 0) { 74 l_int len = strlen(value); 75 error = copyout(value, PTRIN(la->oldval), len + 1); 76 if (!error && la->oldlenp != 0) 77 error = copyout(&len, PTRIN(la->oldlenp), sizeof(len)); 78 if (error) 79 return (error); 80 } 81 82 if (la->newval != 0) 83 return (ENOTDIR); 84 85 return (0); 86 } 87 88 int 89 linux_sysctl(struct thread *td, struct linux_sysctl_args *args) 90 { 91 struct l___sysctl_args la; 92 struct sbuf *sb; 93 l_int *mib; 94 int error, i; 95 96 error = copyin(args->args, &la, sizeof(la)); 97 if (error) 98 return (error); 99 100 if (la.nlen <= 0 || la.nlen > LINUX_CTL_MAXNAME) 101 return (ENOTDIR); 102 103 mib = malloc(la.nlen * sizeof(l_int), M_TEMP, M_WAITOK); 104 error = copyin(PTRIN(la.name), mib, la.nlen * sizeof(l_int)); 105 if (error) { 106 free(mib, M_TEMP); 107 return (error); 108 } 109 110 switch (mib[0]) { 111 case LINUX_CTL_KERN: 112 if (la.nlen < 2) 113 break; 114 115 switch (mib[1]) { 116 case LINUX_KERN_VERSION: 117 error = handle_string(&la, version); 118 free(mib, M_TEMP); 119 return (error); 120 default: 121 break; 122 } 123 break; 124 default: 125 break; 126 } 127 128 sb = sbuf_new(NULL, NULL, 20 + la.nlen * 5, SBUF_AUTOEXTEND); 129 if (sb == NULL) { 130 linux_msg(td, "sysctl is not implemented"); 131 } else { 132 sbuf_printf(sb, "sysctl "); 133 for (i = 0; i < la.nlen; i++) 134 sbuf_printf(sb, "%c%d", (i) ? ',' : '{', mib[i]); 135 sbuf_printf(sb, "} is not implemented"); 136 sbuf_finish(sb); 137 linux_msg(td, "%s", sbuf_data(sb)); 138 sbuf_delete(sb); 139 } 140 141 free(mib, M_TEMP); 142 return (ENOTDIR); 143 } 144