linux32_misc.c revision 1.16.2.1
1 /* $NetBSD: linux32_misc.c,v 1.16.2.1 2009/07/23 23:31:42 jym 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 1.16.2.1 2009/07/23 23:31:42 jym Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/proc.h> 39 #include <sys/time.h> 40 #include <sys/types.h> 41 #include <sys/malloc.h> 42 #include <sys/fstypes.h> 43 #include <sys/vfs_syscalls.h> 44 #include <sys/ptrace.h> 45 #include <sys/syscall.h> 46 47 #include <compat/netbsd32/netbsd32.h> 48 #include <compat/netbsd32/netbsd32_syscallargs.h> 49 50 #include <compat/linux32/common/linux32_types.h> 51 #include <compat/linux32/common/linux32_signal.h> 52 #include <compat/linux32/linux32_syscallargs.h> 53 54 #include <compat/linux/common/linux_ptrace.h> 55 #include <compat/linux/common/linux_types.h> 56 #include <compat/linux/common/linux_signal.h> 57 #include <compat/linux/common/linux_misc.h> 58 #include <compat/linux/common/linux_statfs.h> 59 #include <compat/linux/common/linux_ipc.h> 60 #include <compat/linux/common/linux_sem.h> 61 #include <compat/linux/linux_syscallargs.h> 62 63 extern const struct linux_mnttypes linux_fstypes[]; 64 extern const int linux_fstypes_cnt; 65 66 67 /* 68 * Implement the fs stat functions. Straightforward. 69 */ 70 int 71 linux32_sys_statfs(struct lwp *l, const struct linux32_sys_statfs_args *uap, register_t *retval) 72 { 73 /* { 74 syscallarg(const netbsd32_charp char) path; 75 syscallarg(linux32_statfsp) sp; 76 } */ 77 struct statvfs *sb; 78 struct linux_statfs ltmp; 79 int error; 80 81 sb = STATVFSBUF_GET(); 82 error = do_sys_pstatvfs(l, SCARG_P32(uap, path), ST_WAIT, sb); 83 if (error == 0) { 84 bsd_to_linux_statfs(sb, <mp); 85 error = copyout(<mp, SCARG_P32(uap, sp), sizeof ltmp); 86 } 87 88 STATVFSBUF_PUT(sb); 89 return error; 90 } 91 92 int 93 linux32_sys_fstatfs(struct lwp *l, const struct linux32_sys_fstatfs_args *uap, register_t *retval) 94 { 95 /* { 96 syscallarg(int) fd; 97 syscallarg(linux32_statfsp) sp; 98 } */ 99 struct statvfs *sb; 100 struct linux_statfs ltmp; 101 int error; 102 103 sb = STATVFSBUF_GET(); 104 error = do_sys_fstatvfs(l, SCARG(uap, fd), ST_WAIT, sb); 105 if (error == 0) { 106 bsd_to_linux_statfs(sb, <mp); 107 error = copyout(<mp, SCARG_P32(uap, sp), sizeof ltmp); 108 } 109 STATVFSBUF_PUT(sb); 110 111 return error; 112 } 113 114 extern const int linux_ptrace_request_map[]; 115 116 int 117 linux32_sys_ptrace(struct lwp *l, const struct linux32_sys_ptrace_args *uap, register_t *retval) 118 { 119 /* { 120 i386, m68k, powerpc: T=int 121 alpha, amd64: T=long 122 syscallarg(T) request; 123 syscallarg(T) pid; 124 syscallarg(T) addr; 125 syscallarg(T) data; 126 } */ 127 const int *ptr; 128 int request; 129 int error; 130 131 ptr = linux_ptrace_request_map; 132 request = SCARG(uap, request); 133 while (*ptr != -1) 134 if (*ptr++ == request) { 135 struct sys_ptrace_args pta; 136 137 SCARG(&pta, req) = *ptr; 138 SCARG(&pta, pid) = SCARG(uap, pid); 139 SCARG(&pta, addr) = NETBSD32IPTR64(SCARG(uap, addr)); 140 SCARG(&pta, data) = SCARG(uap, data); 141 142 /* 143 * Linux ptrace(PTRACE_CONT, pid, 0, 0) means actually 144 * to continue where the process left off previously. 145 * The same thing is achieved by addr == (void *) 1 146 * on NetBSD, so rewrite 'addr' appropriately. 147 */ 148 if (request == LINUX_PTRACE_CONT && SCARG(uap, addr)==0) 149 SCARG(&pta, addr) = (void *) 1; 150 151 error = sysent[SYS_ptrace].sy_call(l, &pta, retval); 152 if (error) 153 return error; 154 switch (request) { 155 case LINUX_PTRACE_PEEKTEXT: 156 case LINUX_PTRACE_PEEKDATA: 157 error = copyout (retval, 158 NETBSD32IPTR64(SCARG(uap, data)), 159 sizeof *retval); 160 *retval = SCARG(uap, data); 161 break; 162 default: 163 break; 164 } 165 return error; 166 } 167 else 168 ptr++; 169 170 return EIO; 171 } 172 173 int 174 linux32_sys_personality(struct lwp *l, const struct linux32_sys_personality_args *uap, register_t *retval) 175 { 176 /* { 177 syscallarg(int) per; 178 } */ 179 180 switch (SCARG(uap, per)) { 181 case LINUX_PER_LINUX: 182 case LINUX_PER_LINUX32: 183 case LINUX_PER_QUERY: 184 break; 185 default: 186 return EINVAL; 187 } 188 189 retval[0] = LINUX_PER_LINUX; 190 return 0; 191 } 192
Indexes created Sun Oct 12 05:10:08 GMT 2025