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