sunos_misc.c revision 1.7
1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * All advertising materials mentioning features or use of this software 10 * must display the following acknowledgement: 11 * This product includes software developed by the University of 12 * California, Lawrence Berkeley Laboratory. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)sun_misc.c 8.1 (Berkeley) 6/18/93 43 * 44 * from: Header: sun_misc.c,v 1.16 93/04/07 02:46:27 torek Exp 45 * $Id: sunos_misc.c,v 1.7 1993/11/12 03:23:51 deraadt Exp $ 46 */ 47 48 /* 49 * SunOS compatibility module. 50 * 51 * SunOS system calls that are implemented differently in BSD are 52 * handled here. 53 */ 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <ufs/dir.h> 58 #include <sys/proc.h> 59 #include <sys/file.h> 60 #include <sys/filedesc.h> 61 #include <sys/ioctl.h> 62 #include <sys/malloc.h> 63 #include <sys/mbuf.h> 64 #include <sys/mman.h> 65 #include <sys/mount.h> 66 #include <sys/resource.h> 67 #include <sys/resourcevar.h> 68 #include <sys/signal.h> 69 #include <sys/signalvar.h> 70 #include <sys/socket.h> 71 #include <sys/vnode.h> 72 #include <sys/uio.h> 73 #include <sys/wait.h> 74 75 #include <miscfs/specfs/specdev.h> 76 77 #include <vm/vm.h> 78 79 struct sun_wait4_args { 80 int pid; 81 int *status; 82 int options; 83 struct rusage *rusage; 84 }; 85 sun_wait4(p, uap, retval) 86 struct proc *p; 87 struct sun_wait4_args *uap; 88 int *retval; 89 { 90 91 if (uap->pid == 0) 92 uap->pid = WAIT_ANY; 93 return (wait4(p, uap, retval)); 94 } 95 96 struct sun_creat_args { 97 char *fname; 98 int fmode; 99 }; 100 sun_creat(p, uap, retval) 101 struct proc *p; 102 struct sun_creat_args *uap; 103 int *retval; 104 { 105 struct args { 106 char *fname; 107 int mode; 108 int crtmode; 109 } openuap; 110 111 openuap.fname = uap->fname; 112 openuap.crtmode = uap->fmode; 113 openuap.mode = O_WRONLY | O_CREAT | O_TRUNC; 114 return (open(p, &openuap, retval)); 115 } 116 117 struct sun_execv_args { 118 char *fname; 119 char **argp; 120 char **envp; /* pseudo */ 121 }; 122 sun_execv(p, uap, retval) 123 struct proc *p; 124 struct sun_execv_args *uap; 125 int *retval; 126 { 127 128 uap->envp = NULL; 129 return (execve(p, uap, retval)); 130 } 131 132 struct sun_omsync_args { 133 caddr_t addr; 134 int len; 135 int flags; 136 }; 137 sun_omsync(p, uap, retval) 138 struct proc *p; 139 struct sun_omsync_args *uap; 140 int *retval; 141 { 142 143 if (uap->flags) 144 return (EINVAL); 145 return (msync(p, uap, retval)); 146 } 147 148 struct sun_unmount_args { 149 char *name; 150 int flags; /* pseudo */ 151 }; 152 sun_unmount(p, uap, retval) 153 struct proc *p; 154 struct sun_unmount_args *uap; 155 int *retval; 156 { 157 158 uap->flags = 0; 159 return (unmount(p, uap, retval)); 160 } 161 162 static int 163 gettype(tptr) 164 int *tptr; 165 { 166 int type, error; 167 char in[20]; 168 169 if (error = copyinstr((caddr_t)*tptr, in, sizeof in, (u_int *)0)) 170 return (error); 171 if (strcmp(in, "4.2") == 0 || strcmp(in, "ufs") == 0) 172 type = MOUNT_UFS; 173 else if (strcmp(in, "nfs") == 0) 174 type = MOUNT_NFS; 175 else 176 return (EINVAL); 177 *tptr = type; 178 return (0); 179 } 180 181 #define SUNM_RDONLY 0x01 /* mount fs read-only */ 182 #define SUNM_NOSUID 0x02 /* mount fs with setuid disallowed */ 183 #define SUNM_NEWTYPE 0x04 /* type is string (char *), not int */ 184 #define SUNM_GRPID 0x08 /* (bsd semantics; ignored) */ 185 #define SUNM_REMOUNT 0x10 /* update existing mount */ 186 #define SUNM_NOSUB 0x20 /* prevent submounts (rejected) */ 187 #define SUNM_MULTI 0x40 /* (ignored) */ 188 #define SUNM_SYS5 0x80 /* Sys 5-specific semantics (rejected) */ 189 190 struct sun_mount_args { 191 int type; 192 char *dir; 193 int flags; 194 caddr_t data; 195 }; 196 sun_mount(p, uap, retval) 197 struct proc *p; 198 struct sun_mount_args *uap; 199 int *retval; 200 { 201 int oflags = uap->flags, nflags, error; 202 203 if (oflags & (SUNM_NOSUB | SUNM_SYS5)) 204 return (EINVAL); 205 if (oflags & SUNM_NEWTYPE && (error = gettype(&uap->type))) 206 return (error); 207 nflags = 0; 208 if (oflags & SUNM_RDONLY) 209 nflags |= MNT_RDONLY; 210 if (oflags & SUNM_NOSUID) 211 nflags |= MNT_NOSUID; 212 if (oflags & SUNM_REMOUNT) 213 nflags |= MNT_UPDATE; 214 uap->flags = nflags; 215 return (mount(p, uap, retval)); 216 } 217 218 struct sun_sigpending_args { 219 int *mask; 220 }; 221 sun_sigpending(p, uap, retval) 222 struct proc *p; 223 struct sun_sigpending_args *uap; 224 int *retval; 225 { 226 int mask = p->p_sig & p->p_sigmask; 227 228 return (copyout((caddr_t)&mask, (caddr_t)uap->mask, sizeof(int))); 229 } 230 231 /* TDR: Temporary until sys/dir.h, include/dirent.h and sys/dirent.h are fixed */ 232 struct dirent { 233 u_long d_fileno; /* file number of entry */ 234 u_short d_reclen; /* length of this record */ 235 u_short d_namlen; /* length of string in d_name */ 236 char d_name[255 + 1]; /* name must be no longer than this */ 237 }; 238 239 /* 240 * Here is the sun layout. (Compare the BSD layout in <sys/dirent.h>.) 241 * We can assume big-endian, so the BSD d_type field is just the high 242 * byte of the SunOS d_namlen field, after adjusting for the extra "long". 243 */ 244 struct sun_dirent { 245 long d_off; 246 u_long d_fileno; 247 u_short d_reclen; 248 u_short d_namlen; 249 char d_name[256]; 250 }; 251 252 /* 253 * Read Sun-style directory entries. We suck them into kernel space so 254 * that they can be massaged before being copied out to user code. Like 255 * SunOS, we squish out `empty' entries. 256 * 257 * This is quite ugly, but what do you expect from compatibility code? 258 */ 259 struct sun_getdents_args { 260 int fd; 261 char *buf; 262 int nbytes; 263 }; 264 sun_getdents(p, uap, retval) 265 struct proc *p; 266 register struct sun_getdents_args *uap; 267 int *retval; 268 { 269 register struct vnode *vp; 270 register caddr_t inp, buf; /* BSD-format */ 271 register int len, reclen; /* BSD-format */ 272 register caddr_t outp; /* Sun-format */ 273 register int resid; /* Sun-format */ 274 struct file *fp; 275 struct uio auio; 276 struct iovec aiov; 277 off_t off; /* true file offset */ 278 long soff; /* Sun file offset */ 279 int buflen, error, eofflag; 280 #define BSD_DIRENT(cp) ((struct dirent *)(cp)) 281 #define SUN_RECLEN(reclen) (reclen + sizeof(long)) 282 283 if ((error = getvnode(p->p_fd, uap->fd, &fp)) != 0) 284 return (error); 285 if ((fp->f_flag & FREAD) == 0) 286 return (EBADF); 287 vp = (struct vnode *)fp->f_data; 288 if (vp->v_type != VDIR) /* XXX vnode readdir op should do this */ 289 return (EINVAL); 290 buflen = min(MAXBSIZE, uap->nbytes); 291 buf = malloc(buflen, M_TEMP, M_WAITOK); 292 VOP_LOCK(vp); 293 off = fp->f_offset; 294 again: 295 aiov.iov_base = buf; 296 aiov.iov_len = buflen; 297 auio.uio_iov = &aiov; 298 auio.uio_iovcnt = 1; 299 auio.uio_rw = UIO_READ; 300 auio.uio_segflg = UIO_SYSSPACE; 301 auio.uio_procp = p; 302 auio.uio_resid = buflen; 303 auio.uio_offset = off; 304 /* 305 * First we read into the malloc'ed buffer, then 306 * we massage it into user space, one record at a time. 307 */ 308 if (error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, NULL, 0)) 309 goto out; 310 inp = buf; 311 outp = uap->buf; 312 resid = uap->nbytes; 313 if ((len = buflen - auio.uio_resid) == 0) 314 goto eof; 315 for (; len > 0; len -= reclen) { 316 reclen = ((struct dirent *)inp)->d_reclen; 317 if (reclen & 3) 318 panic("sun_getdents"); 319 off += reclen; /* each entry points to next */ 320 if (BSD_DIRENT(inp)->d_fileno == 0) { 321 inp += reclen; /* it is a hole; squish it out */ 322 continue; 323 } 324 if (reclen > len || resid < SUN_RECLEN(reclen)) { 325 /* entry too big for buffer, so just stop */ 326 outp++; 327 break; 328 } 329 /* 330 * Massage in place to make a Sun-shaped dirent (otherwise 331 * we have to worry about touching user memory outside of 332 * the copyout() call). 333 */ 334 BSD_DIRENT(inp)->d_reclen = SUN_RECLEN(reclen); 335 #if notdef 336 BSD_DIRENT(inp)->d_type = 0; /* 4.4 specific */ 337 #endif 338 soff = off; 339 if ((error = copyout((caddr_t)&soff, outp, sizeof soff)) != 0 || 340 (error = copyout(inp, outp + sizeof soff, reclen)) != 0) 341 goto out; 342 /* advance past this real entry */ 343 inp += reclen; 344 /* advance output past Sun-shaped entry */ 345 outp += SUN_RECLEN(reclen); 346 resid -= SUN_RECLEN(reclen); 347 } 348 /* if we squished out the whole block, try again */ 349 if (outp == uap->buf) 350 goto again; 351 fp->f_offset = off; /* update the vnode offset */ 352 eof: 353 *retval = uap->nbytes - resid; 354 out: 355 VOP_UNLOCK(vp); 356 free(buf, M_TEMP); 357 return (error); 358 } 359 360 /* 361 * The Sun bit-style arguments are not in the same order as the 362 * NetBSD ones. We must remap them the bits. 363 */ 364 365 #if defined(sparc) 366 #define DEVZERO makedev(3, 12) /* major,minor of /dev/zero */ 367 #endif 368 #if defined(sun3) || defined(amiga) || defined(mac) || defined(hp300) 369 #define DEVZERO makedev(2, 12) /* major,minor of /dev/zero */ 370 #endif 371 372 #define SUN_PROT_READ 1 373 #define SUN_PROT_WRITE 2 374 #define SUN_PROT_EXEC 4 375 #define SUN_PROT_UALL (SUN_PROT_READ | SUN_PROT_WRITE | SUN_PROT_EXEC) 376 377 #define SUN__MAP_NEW 0x80000000 /* if not, old mmap & cannot handle */ 378 379 #define SUN_MAP_SHARED 1 380 #define SUN_MAP_PRIVATE 2 381 #define SUN_MAP_TYPE 0xf 382 #define SUN_MAP_FIXED 0x10 383 384 struct sun_mmap_args { 385 caddr_t addr; 386 size_t len; 387 int prot; 388 int flags; 389 int fd; 390 off_t off; 391 }; 392 sun_mmap(p, uap, retval) 393 register struct proc *p; 394 register struct sun_mmap_args *uap; 395 int *retval; 396 { 397 register int flags, prot, newflags, newprot; 398 register struct filedesc *fdp; 399 register struct file *fp; 400 register struct vnode *vp; 401 402 /* 403 * Verify and re-map the arguments. 404 */ 405 prot = uap->prot; 406 newprot = 0; 407 if (uap->prot & ~SUN_PROT_UALL) 408 return (EINVAL); 409 if (uap->prot & SUN_PROT_READ) 410 newprot |= PROT_READ; 411 if (uap->prot & SUN_PROT_WRITE) 412 newprot |= PROT_WRITE; 413 if (uap->prot & SUN_PROT_EXEC) 414 newprot |= PROT_EXEC; 415 416 flags = uap->flags; 417 newflags = 0; 418 if ((flags & SUN__MAP_NEW) == 0) 419 return (EINVAL); 420 421 switch (flags & SUN_MAP_TYPE) { 422 case SUN_MAP_SHARED: 423 newflags |= MAP_SHARED; 424 break; 425 case SUN_MAP_PRIVATE: 426 newflags |= MAP_PRIVATE; 427 break; 428 default: 429 return (EINVAL); 430 } 431 432 if (flags & SUN_MAP_FIXED) 433 newflags |= MAP_FIXED; 434 435 /* 436 * Special case: if fd refers to /dev/zero, map as MAP_ANON. (XXX) 437 */ 438 fdp = p->p_fd; 439 if ((unsigned)uap->fd < fdp->fd_nfiles && /*XXX*/ 440 (fp = fdp->fd_ofiles[uap->fd]) != NULL && /*XXX*/ 441 fp->f_type == DTYPE_VNODE && /*XXX*/ 442 (vp = (struct vnode *)fp->f_data)->v_type == VCHR && /*XXX*/ 443 vp->v_rdev == DEVZERO) { /*XXX*/ 444 newflags |= MAP_ANON; 445 uap->fd = -1; 446 } else 447 newflags |= MAP_FILE; 448 449 /* All done, fix up fields and go. */ 450 uap->flags = newflags; 451 uap->prot = newprot; 452 return (smmap(p, uap, retval)); 453 } 454 455 #define MC_SYNC 1 456 #define MC_LOCK 2 457 #define MC_UNLOCK 3 458 #define MC_ADVISE 4 459 #define MC_LOCKAS 5 460 #define MC_UNLOCKAS 6 461 462 struct sun_mctl_args { 463 caddr_t addr; 464 size_t len; 465 int func; 466 void *arg; 467 }; 468 sun_mctl(p, uap, retval) 469 register struct proc *p; 470 register struct sun_mctl_args *uap; 471 int *retval; 472 { 473 474 switch (uap->func) { 475 476 case MC_ADVISE: /* ignore for now */ 477 return (0); 478 479 case MC_SYNC: /* translate to msync */ 480 return (msync(p, uap, retval)); 481 482 default: 483 return (EINVAL); 484 } 485 } 486 487 struct sun_setsockopt_args { 488 int s; 489 int level; 490 int name; 491 caddr_t val; 492 int valsize; 493 }; 494 sun_setsockopt(p, uap, retval) 495 struct proc *p; 496 register struct sun_setsockopt_args *uap; 497 int *retval; 498 { 499 struct file *fp; 500 struct mbuf *m = NULL; 501 int error; 502 503 if (error = getsock(p->p_fd, uap->s, &fp)) 504 return (error); 505 #define SO_DONTLINGER (~SO_LINGER) 506 if (uap->name == SO_DONTLINGER) { 507 m = m_get(M_WAIT, MT_SOOPTS); 508 if (m == NULL) 509 return (ENOBUFS); 510 mtod(m, struct linger *)->l_onoff = 0; 511 m->m_len = sizeof(struct linger); 512 return (sosetopt((struct socket *)fp->f_data, uap->level, 513 SO_LINGER, m)); 514 } 515 if (uap->valsize > MLEN) 516 return (EINVAL); 517 if (uap->val) { 518 m = m_get(M_WAIT, MT_SOOPTS); 519 if (m == NULL) 520 return (ENOBUFS); 521 if (error = copyin(uap->val, mtod(m, caddr_t), 522 (u_int)uap->valsize)) { 523 (void) m_free(m); 524 return (error); 525 } 526 m->m_len = uap->valsize; 527 } 528 return (sosetopt((struct socket *)fp->f_data, uap->level, 529 uap->name, m)); 530 } 531 532 struct sun_fchroot_args { 533 int fdes; 534 }; 535 sun_fchroot(p, uap, retval) 536 register struct proc *p; 537 register struct sun_fchroot_args *uap; 538 int *retval; 539 { 540 register struct filedesc *fdp = p->p_fd; 541 register struct vnode *vp; 542 struct file *fp; 543 int error; 544 545 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 546 return (error); 547 if ((error = getvnode(fdp, uap->fdes, &fp)) != 0) 548 return (error); 549 vp = (struct vnode *)fp->f_data; 550 VOP_LOCK(vp); 551 if (vp->v_type != VDIR) 552 error = ENOTDIR; 553 else 554 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); 555 VOP_UNLOCK(vp); 556 if (error) 557 return (error); 558 VREF(vp); 559 if (fdp->fd_rdir != NULL) 560 vrele(fdp->fd_rdir); 561 fdp->fd_rdir = vp; 562 return (0); 563 } 564 565 /* 566 * XXX: This needs cleaning up. 567 */ 568 auditsys(...) 569 { 570 return 0; 571 } 572
Indexes created Wed Oct 15 03:09:54 GMT 2025