1 /* $NetBSD: netbsd32_compat_30.c,v 1.36 2021/01/19 03:20:13 simonb 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_30.c,v 1.36 2021/01/19 03:20:13 simonb Exp $"); 31 32 #if defined(_KERNEL_OPT) 33 #include <opt_ntp.h> 34 #endif 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/module.h> 39 #include <sys/mount.h> 40 #include <sys/mount.h> 41 #include <sys/socket.h> 42 #include <sys/socketvar.h> 43 #include <sys/stat.h> 44 #include <sys/time.h> 45 #include <sys/ktrace.h> 46 #include <sys/resourcevar.h> 47 #include <sys/vnode.h> 48 #include <sys/file.h> 49 #include <sys/filedesc.h> 50 #include <sys/namei.h> 51 #include <sys/statvfs.h> 52 #include <sys/syscallargs.h> 53 #include <sys/syscallvar.h> 54 #include <sys/proc.h> 55 #include <sys/dirent.h> 56 #include <sys/kauth.h> 57 #include <sys/vfs_syscalls.h> 58 #include <sys/compat_stub.h> 59 60 #include <compat/netbsd32/netbsd32.h> 61 #include <compat/netbsd32/netbsd32_syscall.h> 62 #include <compat/netbsd32/netbsd32_syscallargs.h> 63 #include <compat/netbsd32/netbsd32_conv.h> 64 #include <compat/sys/mount.h> 65 66 int 67 compat_30_netbsd32_getdents(struct lwp *l, const struct compat_30_netbsd32_getdents_args *uap, register_t *retval) 68 { 69 /* { 70 syscallarg(int) fd; 71 syscallarg(netbsd32_charp) buf; 72 syscallarg(netbsd32_size_t) count; 73 } */ 74 file_t *fp; 75 int error, done; 76 char *buf; 77 netbsd32_size_t count; 78 79 /* Limit the size on any kernel buffers used by VOP_READDIR */ 80 count = uimin(MAXBSIZE, SCARG(uap, count)); 81 82 /* fd_getvnode() will use the descriptor for us */ 83 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 84 return error; 85 if ((fp->f_flag & FREAD) == 0) { 86 error = EBADF; 87 goto out; 88 } 89 if (count == 0) 90 goto out; 91 92 buf = kmem_alloc(count, KM_SLEEP); 93 error = vn_readdir(fp, buf, UIO_SYSSPACE, count, &done, l, 0, 0); 94 if (error == 0) { 95 *retval = netbsd32_to_dirent12(buf, done); 96 error = copyout(buf, SCARG_P32(uap, buf), *retval); 97 } 98 kmem_free(buf, count); 99 out: 100 fd_putfile(SCARG(uap, fd)); 101 return error; 102 } 103 104 int 105 compat_30_netbsd32___stat13(struct lwp *l, const struct compat_30_netbsd32___stat13_args *uap, register_t *retval) 106 { 107 /* { 108 syscallarg(const netbsd32_charp) path; 109 syscallarg(netbsd32_stat13p_t) ub; 110 } */ 111 struct netbsd32_stat13 sb32; 112 struct stat sb; 113 int error; 114 const char *path; 115 116 path = SCARG_P32(uap, path); 117 118 error = do_sys_stat(path, FOLLOW, &sb); 119 if (error) 120 return error; 121 netbsd32_from___stat13(&sb, &sb32); 122 error = copyout(&sb32, SCARG_P32(uap, ub), sizeof(sb32)); 123 return error; 124 } 125 126 int 127 compat_30_netbsd32___fstat13(struct lwp *l, const struct compat_30_netbsd32___fstat13_args *uap, register_t *retval) 128 { 129 /* { 130 syscallarg(int) fd; 131 syscallarg(netbsd32_stat13p_t) sb; 132 } */ 133 struct netbsd32_stat13 sb32; 134 struct stat ub; 135 int error; 136 137 error = do_sys_fstat(SCARG(uap, fd), &ub); 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, LK_EXCLUSIVE, &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(sb32)); 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 = kmem_alloc(sizeof(*s32), KM_SLEEP); 224 netbsd32_from_statvfs(sbuf, s32); 225 error = copyout(s32, SCARG_P32(uap, buf), sizeof *s32); 226 kmem_free(s32, sizeof(*s32)); 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___fhstat30(struct lwp *l, const struct compat_30_netbsd32___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_stat50 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___stat50(&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 } 304 305 #ifdef NTP 306 int 307 compat_30_netbsd32_ntp_gettime(struct lwp *l, const struct compat_30_netbsd32_ntp_gettime_args *uap, register_t *retval) 308 { 309 /* { 310 syscallarg(netbsd32_ntptimevalp_t) ntvp; 311 } */ 312 struct netbsd32_ntptimeval30 ntv32; 313 struct ntptimeval ntv; 314 int error = 0; 315 316 if (vec_ntp_gettime == NULL) 317 return EINVAL; 318 319 if (SCARG_P32(uap, ntvp)) { 320 (*vec_ntp_gettime)(&ntv); 321 322 memset(&ntv32, 0, sizeof(ntv32)); 323 ntv32.time.tv_sec = ntv.time.tv_sec; 324 ntv32.time.tv_usec = ntv.time.tv_nsec / 1000; 325 ntv32.maxerror = (netbsd32_long)ntv.maxerror; 326 ntv32.esterror = (netbsd32_long)ntv.esterror; 327 error = copyout(&ntv32, SCARG_P32(uap, ntvp), sizeof(ntv32)); 328 } 329 if (!error) { 330 *retval = (*vec_ntp_timestatus)(); 331 } 332 333 return error; 334 } 335 #endif 336 337 static struct syscall_package compat_netbsd32_30_syscalls[] = { 338 { NETBSD32_SYS_compat_30_netbsd32_getdents, 0, 339 (sy_call_t *)compat_30_netbsd32_getdents }, 340 { NETBSD32_SYS_compat_30_netbsd32___stat13, 0, 341 (sy_call_t *)compat_30_netbsd32___stat13 }, 342 { NETBSD32_SYS_compat_30_netbsd32___fstat13, 0, 343 (sy_call_t *)compat_30_netbsd32___fstat13 }, 344 { NETBSD32_SYS_compat_30_netbsd32___lstat13, 0, 345 (sy_call_t *)compat_30_netbsd32___lstat13 }, 346 { NETBSD32_SYS_compat_30_netbsd32_fhstat, 0, 347 (sy_call_t *)compat_30_netbsd32_fhstat }, 348 { NETBSD32_SYS_compat_30_netbsd32_fhstatvfs1, 0, 349 (sy_call_t *)compat_30_netbsd32_fhstatvfs1 }, 350 { NETBSD32_SYS_compat_30_netbsd32_socket, 0, 351 (sy_call_t *)compat_30_netbsd32_socket }, 352 { NETBSD32_SYS_compat_30_netbsd32_getfh, 0, 353 (sy_call_t *)compat_30_netbsd32_getfh }, 354 { NETBSD32_SYS_compat_30_netbsd32___fhstat30, 0, 355 (sy_call_t *)compat_30_netbsd32___fhstat30 }, 356 { NETBSD32_SYS_compat_30_netbsd32_fhopen, 0, 357 (sy_call_t *)compat_30_netbsd32_fhopen }, 358 #ifdef NTP 359 { NETBSD32_SYS_compat_30_netbsd32_ntp_gettime, 0, 360 (sy_call_t *)compat_30_netbsd32_ntp_gettime }, 361 #endif 362 { 0, 0, NULL } 363 }; 364 365 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_30, "compat_netbsd32_40,compat_30"); 366 367 static int 368 compat_netbsd32_30_modcmd(modcmd_t cmd, void *arg) 369 { 370 371 switch (cmd) { 372 case MODULE_CMD_INIT: 373 return syscall_establish(&emul_netbsd32, 374 compat_netbsd32_30_syscalls); 375 376 case MODULE_CMD_FINI: 377 return syscall_disestablish(&emul_netbsd32, 378 compat_netbsd32_30_syscalls); 379 380 default: 381 return ENOTTY; 382 } 383 } 384
Indexes created Sat Sep 20 22:09:52 GMT 2025