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