1 /* $NetBSD: linux32_misc.c,v 1.12 2008/06/18 22:58:21 njoly Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Eric Haszlakiewicz; by Jason R. Thorpe 9 * of the Numerical Aerospace Simulation Facility, NASA Ames Research Center; 10 * by Edgar Fu\ss, Mathematisches Institut der Uni Bonn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: linux32_misc.c,v 1.12 2008/06/18 22:58:21 njoly Exp $"); 36 37 #if defined(_KERNEL_OPT) 38 #include "opt_ptrace.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/proc.h> 43 #include <sys/time.h> 44 #include <sys/types.h> 45 #include <sys/malloc.h> 46 #include <sys/fstypes.h> 47 #include <sys/vfs_syscalls.h> 48 #include <sys/ptrace.h> 49 50 #include <compat/netbsd32/netbsd32.h> 51 #include <compat/netbsd32/netbsd32_syscallargs.h> 52 53 #include <compat/linux32/common/linux32_types.h> 54 #include <compat/linux32/common/linux32_signal.h> 55 #include <compat/linux32/linux32_syscallargs.h> 56 57 #include <compat/linux/common/linux_ptrace.h> 58 #include <compat/linux/common/linux_types.h> 59 #include <compat/linux/common/linux_signal.h> 60 #include <compat/linux/common/linux_misc.h> 61 #include <compat/linux/common/linux_statfs.h> 62 #include <compat/linux/linux_syscallargs.h> 63 64 extern const struct linux_mnttypes linux_fstypes[]; 65 extern const int linux_fstypes_cnt; 66 67 68 /* 69 * Implement the fs stat functions. Straightforward. 70 */ 71 int 72 linux32_sys_statfs(struct lwp *l, const struct linux32_sys_statfs_args *uap, register_t *retval) 73 { 74 /* { 75 syscallarg(const netbsd32_charp char) path; 76 syscallarg(linux32_statfsp) sp; 77 } */ 78 struct statvfs *sb; 79 struct linux_statfs ltmp; 80 int error; 81 82 sb = STATVFSBUF_GET(); 83 error = do_sys_pstatvfs(l, SCARG_P32(uap, path), ST_WAIT, sb); 84 if (error == 0) { 85 bsd_to_linux_statfs(sb, <mp); 86 error = copyout(<mp, SCARG_P32(uap, sp), sizeof ltmp); 87 } 88 89 STATVFSBUF_PUT(sb); 90 return error; 91 } 92 93 extern const int linux_ptrace_request_map[]; 94 95 int 96 linux32_sys_ptrace(struct lwp *l, const struct linux32_sys_ptrace_args *uap, register_t *retval) 97 { 98 /* { 99 i386, m68k, powerpc: T=int 100 alpha, amd64: T=long 101 syscallarg(T) request; 102 syscallarg(T) pid; 103 syscallarg(T) addr; 104 syscallarg(T) data; 105 } */ 106 #if defined(PTRACE) || defined(_LKM) 107 const int *ptr; 108 int request; 109 int error; 110 111 ptr = linux_ptrace_request_map; 112 request = SCARG(uap, request); 113 while (*ptr != -1) 114 if (*ptr++ == request) { 115 struct sys_ptrace_args pta; 116 117 SCARG(&pta, req) = *ptr; 118 SCARG(&pta, pid) = SCARG(uap, pid); 119 SCARG(&pta, addr) = NETBSD32IPTR64(SCARG(uap, addr)); 120 SCARG(&pta, data) = SCARG(uap, data); 121 122 /* 123 * Linux ptrace(PTRACE_CONT, pid, 0, 0) means actually 124 * to continue where the process left off previously. 125 * The same thing is achieved by addr == (void *) 1 126 * on NetBSD, so rewrite 'addr' appropriately. 127 */ 128 if (request == LINUX_PTRACE_CONT && SCARG(uap, addr)==0) 129 SCARG(&pta, addr) = (void *) 1; 130 131 error = sys_ptrace(l, &pta, retval); 132 if (error) 133 return error; 134 switch (request) { 135 case LINUX_PTRACE_PEEKTEXT: 136 case LINUX_PTRACE_PEEKDATA: 137 error = copyout (retval, 138 NETBSD32IPTR64(SCARG(uap, data)), 139 sizeof *retval); 140 *retval = SCARG(uap, data); 141 break; 142 default: 143 break; 144 } 145 return error; 146 } 147 else 148 ptr++; 149 150 return EIO; 151 #else 152 return ENOSYS; 153 #endif /* PTRACE || _LKM */ 154 } 155