1 /* $NetBSD: netbsd32_compat_30.c,v 1.24 2008/03/21 21:54:58 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_30.c,v 1.24 2008/03/21 21:54:58 ad Exp $"); 33 34 #include "opt_nfsserver.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/mount.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/stat.h> 43 #include <sys/time.h> 44 #include <sys/ktrace.h> 45 #include <sys/resourcevar.h> 46 #include <sys/vnode.h> 47 #include <sys/file.h> 48 #include <sys/filedesc.h> 49 #include <sys/namei.h> 50 #include <sys/statvfs.h> 51 #include <sys/syscallargs.h> 52 #include <sys/proc.h> 53 #include <sys/dirent.h> 54 #include <sys/kauth.h> 55 #include <sys/vfs_syscalls.h> 56 57 #include <compat/netbsd32/netbsd32.h> 58 #include <compat/netbsd32/netbsd32_syscallargs.h> 59 #include <compat/netbsd32/netbsd32_conv.h> 60 #include <compat/sys/mount.h> 61 62 63 int 64 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) 65 { 66 /* { 67 syscallarg(int) fd; 68 syscallarg(netbsd32_charp) buf; 69 syscallarg(netbsd32_size_t) count; 70 } */ 71 file_t *fp; 72 int error, done; 73 char *buf; 74 netbsd32_size_t count; 75 76 /* Limit the size on any kernel buffers used by VOP_READDIR */ 77 count = min(MAXBSIZE, SCARG(uap, count)); 78 79 /* getvnode() will use the descriptor for us */ 80 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 81 return (error); 82 if ((fp->f_flag & FREAD) == 0) { 83 error = EBADF; 84 goto out; 85 } 86 buf = malloc(count, M_TEMP, M_WAITOK); 87 error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); 88 if (error == 0) { 89 *retval = netbsd32_to_dirent12(buf, done); 90 error = copyout(buf, SCARG_P32(uap, buf), *retval); 91 } 92 free(buf, M_TEMP); 93 out: 94 fd_putfile(SCARG(uap, fd)); 95 return (error); 96 } 97 98 int 99 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) 100 { 101 /* { 102 syscallarg(const netbsd32_charp) path; 103 syscallarg(netbsd32_stat13p_t) ub; 104 } */ 105 struct netbsd32_stat13 sb32; 106 struct stat sb; 107 int error; 108 const char *path; 109 110 path = SCARG_P32(uap, path); 111 112 error = do_sys_stat(path, FOLLOW, &sb); 113 if (error) 114 return (error); 115 netbsd32_from___stat13(&sb, &sb32); 116 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 117 return (error); 118 } 119 120 int 121 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) 122 { 123 /* { 124 syscallarg(int) fd; 125 syscallarg(netbsd32_stat13p_t) sb; 126 } */ 127 int fd = SCARG(uap, fd); 128 file_t *fp; 129 struct netbsd32_stat13 sb32; 130 struct stat ub; 131 int error = 0; 132 133 if ((fp = fd_getfile(fd)) == NULL) 134 return (EBADF); 135 error = (*fp->f_ops->fo_stat)(fp, &ub); 136 fd_putfile(fd); 137 138 if (error == 0) { 139 netbsd32_from___stat13(&ub, &sb32); 140 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 141 } 142 return (error); 143 } 144 145 int 146 compat_30_netbsd32___lstat13(struct lwp *l, const struct compat_30_netbsd32___lstat13_args *uap, register_t *retval) 147 { 148 /* { 149 syscallarg(const netbsd32_charp) path; 150 syscallarg(netbsd32_stat13p_t) ub; 151 } */ 152 struct netbsd32_stat13 sb32; 153 struct stat sb; 154 int error; 155 const char *path; 156 157 path = SCARG_P32(uap, path); 158 159 error = do_sys_stat(path, NOFOLLOW, &sb); 160 if (error) 161 return (error); 162 netbsd32_from___stat13(&sb, &sb32); 163 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 164 return (error); 165 } 166 167 int 168 compat_30_netbsd32_fhstat(struct lwp *l, const struct compat_30_netbsd32_fhstat_args *uap, register_t *retval) 169 { 170 /* { 171 syscallarg(const netbsd32_fhandlep_t) fhp; 172 syscallarg(netbsd32_stat13p_t) sb; 173 } */ 174 struct stat sb; 175 struct netbsd32_stat13 sb32; 176 int error; 177 struct compat_30_fhandle fh; 178 struct mount *mp; 179 struct vnode *vp; 180 181 /* 182 * Must be super user 183 */ 184 if ((error = kauth_authorize_system(l->l_cred, 185 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL))) 186 return (error); 187 188 if ((error = copyin(SCARG_P32(uap, fhp), &fh, sizeof(fh))) != 0) 189 return (error); 190 191 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) 192 return (ESTALE); 193 if (mp->mnt_op->vfs_fhtovp == NULL) 194 return EOPNOTSUPP; 195 if ((error = VFS_FHTOVP(mp, (struct fid*)&fh.fh_fid, &vp))) 196 return (error); 197 error = vn_stat(vp, &sb); 198 vput(vp); 199 if (error) 200 return (error); 201 netbsd32_from___stat13(&sb, &sb32); 202 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb)); 203 return (error); 204 } 205 206 int 207 compat_30_netbsd32_fhstatvfs1(struct lwp *l, const struct compat_30_netbsd32_fhstatvfs1_args *uap, register_t *retval) 208 { 209 /* { 210 syscallarg(const netbsd32_fhandlep_t) fhp; 211 syscallarg(netbsd32_statvfsp_t) buf; 212 syscallarg(int) flags; 213 } */ 214 struct statvfs *sbuf; 215 struct netbsd32_statvfs *s32; 216 int error; 217 218 sbuf = STATVFSBUF_GET(); 219 error = do_fhstatvfs(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, sbuf, 220 SCARG(uap, flags)); 221 222 if (error != 0) { 223 s32 = malloc(sizeof *s32, M_TEMP, M_WAITOK); 224 netbsd32_from_statvfs(sbuf, s32); 225 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); 226 free(s32, M_TEMP); 227 } 228 STATVFSBUF_PUT(sbuf); 229 230 return (error); 231 } 232 233 int 234 compat_30_netbsd32_socket(struct lwp *l, const struct compat_30_netbsd32_socket_args *uap, register_t *retval) 235 { 236 /* { 237 syscallarg(int) domain; 238 syscallarg(int) type; 239 syscallarg(int) protocol; 240 } */ 241 struct compat_30_sys_socket_args ua; 242 243 NETBSD32TO64_UAP(domain); 244 NETBSD32TO64_UAP(type); 245 NETBSD32TO64_UAP(protocol); 246 return (compat_30_sys_socket(l, &ua, retval)); 247 } 248 249 int 250 compat_30_netbsd32_getfh(struct lwp *l, const struct compat_30_netbsd32_getfh_args *uap, register_t *retval) 251 { 252 /* { 253 syscallarg(const netbsd32_charp) fname; 254 syscallarg(netbsd32_compat_30_fhandlep_t) fhp; 255 } */ 256 struct compat_30_sys_getfh_args ua; 257 258 NETBSD32TOP_UAP(fname, const char); 259 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 260 /* Lucky for us a fhandle_t doesn't change sizes */ 261 return (compat_30_sys_getfh(l, &ua, retval)); 262 } 263 264 265 int 266 compat_30_netbsd32_sys___fhstat30(struct lwp *l, const struct compat_30_netbsd32_sys___fhstat30_args *uap, register_t *retval) 267 { 268 /* { 269 syscallarg(const netbsd32_fhandlep_t) fhp; 270 syscallarg(netbsd32_statp_t) sb; 271 } */ 272 struct stat sb; 273 struct netbsd32_stat sb32; 274 int error; 275 276 error = do_fhstat(l, SCARG_P32(uap, fhp), FHANDLE_SIZE_COMPAT, &sb); 277 if (error) 278 return error; 279 280 netbsd32_from___stat30(&sb, &sb32); 281 error = copyout(&sb32, SCARG_P32(uap, sb), sizeof(sb32)); 282 return error; 283 } 284 285 /* 286 * Open a file given a file handle. 287 * 288 * Check permissions, allocate an open file structure, 289 * and call the device open routine if any. 290 */ 291 int 292 compat_30_netbsd32_fhopen(struct lwp *l, const struct compat_30_netbsd32_fhopen_args *uap, register_t *retval) 293 { 294 /* { 295 syscallarg(const fhandle_t *) fhp; 296 syscallarg(int) flags; 297 } */ 298 struct compat_30_sys_fhopen_args ua; 299 300 NETBSD32TOP_UAP(fhp, struct compat_30_fhandle); 301 NETBSD32TO64_UAP(flags); 302 return (compat_30_sys_fhopen(l, &ua, retval)); 303 } 304