ibcs2_fcntl.c revision 92761
1/* 2 * Copyright (c) 1995 Scott Bartram 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission 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, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD: head/sys/i386/ibcs2/ibcs2_fcntl.c 92761 2002-03-20 05:48:58Z alfred $ 28 */ 29 30#include "opt_spx_hack.h" 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/fcntl.h> 35#include <sys/file.h> 36#include <sys/filedesc.h> 37#include <sys/lock.h> 38#include <sys/mutex.h> 39#include <sys/sysproto.h> 40#include <sys/ttycom.h> 41 42#include <i386/ibcs2/ibcs2_fcntl.h> 43#include <i386/ibcs2/ibcs2_signal.h> 44#include <i386/ibcs2/ibcs2_proto.h> 45#include <i386/ibcs2/ibcs2_util.h> 46 47static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *); 48static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *); 49static int cvt_o_flags(int); 50static int oflags2ioflags(int); 51static int ioflags2oflags(int); 52 53static int 54cvt_o_flags(flags) 55 int flags; 56{ 57 int r = 0; 58 59 /* convert mode into NetBSD mode */ 60 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY; 61 if (flags & IBCS2_O_RDWR) r |= O_RDWR; 62 if (flags & (IBCS2_O_NDELAY | IBCS2_O_NONBLOCK)) r |= O_NONBLOCK; 63 if (flags & IBCS2_O_APPEND) r |= O_APPEND; 64 if (flags & IBCS2_O_SYNC) r |= O_FSYNC; 65 if (flags & IBCS2_O_CREAT) r |= O_CREAT; 66 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC /* | O_CREAT ??? */; 67 if (flags & IBCS2_O_EXCL) r |= O_EXCL; 68 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY; 69 if (flags & IBCS2_O_PRIV) r |= O_EXLOCK; 70 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY; 71 return r; 72} 73 74static void 75cvt_flock2iflock(flp, iflp) 76 struct flock *flp; 77 struct ibcs2_flock *iflp; 78{ 79 switch (flp->l_type) { 80 case F_RDLCK: 81 iflp->l_type = IBCS2_F_RDLCK; 82 break; 83 case F_WRLCK: 84 iflp->l_type = IBCS2_F_WRLCK; 85 break; 86 case F_UNLCK: 87 iflp->l_type = IBCS2_F_UNLCK; 88 break; 89 } 90 iflp->l_whence = (short)flp->l_whence; 91 iflp->l_start = (ibcs2_off_t)flp->l_start; 92 iflp->l_len = (ibcs2_off_t)flp->l_len; 93 iflp->l_sysid = 0; 94 iflp->l_pid = (ibcs2_pid_t)flp->l_pid; 95} 96 97#ifdef DEBUG_IBCS2 98static void 99print_flock(struct flock *flp) 100{ 101 printf("flock: start=%x len=%x pid=%d type=%d whence=%d\n", 102 (int)flp->l_start, (int)flp->l_len, (int)flp->l_pid, 103 flp->l_type, flp->l_whence); 104} 105#endif 106 107static void 108cvt_iflock2flock(iflp, flp) 109 struct ibcs2_flock *iflp; 110 struct flock *flp; 111{ 112 flp->l_start = (off_t)iflp->l_start; 113 flp->l_len = (off_t)iflp->l_len; 114 flp->l_pid = (pid_t)iflp->l_pid; 115 switch (iflp->l_type) { 116 case IBCS2_F_RDLCK: 117 flp->l_type = F_RDLCK; 118 break; 119 case IBCS2_F_WRLCK: 120 flp->l_type = F_WRLCK; 121 break; 122 case IBCS2_F_UNLCK: 123 flp->l_type = F_UNLCK; 124 break; 125 } 126 flp->l_whence = iflp->l_whence; 127} 128 129/* convert iBCS2 mode into NetBSD mode */ 130static int 131ioflags2oflags(flags) 132 int flags; 133{ 134 int r = 0; 135 136 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY; 137 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY; 138 if (flags & IBCS2_O_RDWR) r |= O_RDWR; 139 if (flags & IBCS2_O_NDELAY) r |= O_NONBLOCK; 140 if (flags & IBCS2_O_APPEND) r |= O_APPEND; 141 if (flags & IBCS2_O_SYNC) r |= O_FSYNC; 142 if (flags & IBCS2_O_NONBLOCK) r |= O_NONBLOCK; 143 if (flags & IBCS2_O_CREAT) r |= O_CREAT; 144 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC; 145 if (flags & IBCS2_O_EXCL) r |= O_EXCL; 146 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY; 147 return r; 148} 149 150/* convert NetBSD mode into iBCS2 mode */ 151static int 152oflags2ioflags(flags) 153 int flags; 154{ 155 int r = 0; 156 157 if (flags & O_RDONLY) r |= IBCS2_O_RDONLY; 158 if (flags & O_WRONLY) r |= IBCS2_O_WRONLY; 159 if (flags & O_RDWR) r |= IBCS2_O_RDWR; 160 if (flags & O_NDELAY) r |= IBCS2_O_NONBLOCK; 161 if (flags & O_APPEND) r |= IBCS2_O_APPEND; 162 if (flags & O_FSYNC) r |= IBCS2_O_SYNC; 163 if (flags & O_NONBLOCK) r |= IBCS2_O_NONBLOCK; 164 if (flags & O_CREAT) r |= IBCS2_O_CREAT; 165 if (flags & O_TRUNC) r |= IBCS2_O_TRUNC; 166 if (flags & O_EXCL) r |= IBCS2_O_EXCL; 167 if (flags & O_NOCTTY) r |= IBCS2_O_NOCTTY; 168 return r; 169} 170 171int 172ibcs2_open(td, uap) 173 struct thread *td; 174 struct ibcs2_open_args *uap; 175{ 176 struct proc *p = td->td_proc; 177 int noctty = SCARG(uap, flags) & IBCS2_O_NOCTTY; 178 int ret; 179 caddr_t sg = stackgap_init(); 180 181 SCARG(uap, flags) = cvt_o_flags(SCARG(uap, flags)); 182 if (SCARG(uap, flags) & O_CREAT) 183 CHECKALTCREAT(td, &sg, SCARG(uap, path)); 184 else 185 CHECKALTEXIST(td, &sg, SCARG(uap, path)); 186 ret = open(td, (struct open_args *)uap); 187 188#ifdef SPX_HACK 189 if (ret == ENXIO) { 190 if (!strcmp(SCARG(uap, path), "/compat/ibcs2/dev/spx")) 191 ret = spx_open(td, uap); 192 } else 193#endif /* SPX_HACK */ 194 PROC_LOCK(p); 195 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 196 struct file *fp; 197 int error; 198 199 error = fget(td, td->td_retval[0], &fp); 200 PROC_UNLOCK(p); 201 if (error) 202 return (EBADF); 203 204 /* ignore any error, just give it a try */ 205 if (fp->f_type == DTYPE_VNODE) 206 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td); 207 fdrop(fp, td); 208 } else 209 PROC_UNLOCK(p); 210 return ret; 211} 212 213int 214ibcs2_creat(td, uap) 215 struct thread *td; 216 struct ibcs2_creat_args *uap; 217{ 218 struct open_args cup; 219 caddr_t sg = stackgap_init(); 220 221 CHECKALTCREAT(td, &sg, SCARG(uap, path)); 222 SCARG(&cup, path) = SCARG(uap, path); 223 SCARG(&cup, mode) = SCARG(uap, mode); 224 SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC; 225 return open(td, &cup); 226} 227 228int 229ibcs2_access(td, uap) 230 struct thread *td; 231 struct ibcs2_access_args *uap; 232{ 233 struct access_args cup; 234 caddr_t sg = stackgap_init(); 235 236 CHECKALTEXIST(td, &sg, SCARG(uap, path)); 237 SCARG(&cup, path) = SCARG(uap, path); 238 SCARG(&cup, flags) = SCARG(uap, flags); 239 return access(td, &cup); 240} 241 242int 243ibcs2_fcntl(td, uap) 244 struct thread *td; 245 struct ibcs2_fcntl_args *uap; 246{ 247 int error; 248 struct fcntl_args fa; 249 struct flock *flp; 250 struct ibcs2_flock ifl; 251 252 switch(SCARG(uap, cmd)) { 253 case IBCS2_F_DUPFD: 254 SCARG(&fa, fd) = SCARG(uap, fd); 255 SCARG(&fa, cmd) = F_DUPFD; 256 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 257 return fcntl(td, &fa); 258 case IBCS2_F_GETFD: 259 SCARG(&fa, fd) = SCARG(uap, fd); 260 SCARG(&fa, cmd) = F_GETFD; 261 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 262 return fcntl(td, &fa); 263 case IBCS2_F_SETFD: 264 SCARG(&fa, fd) = SCARG(uap, fd); 265 SCARG(&fa, cmd) = F_SETFD; 266 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 267 return fcntl(td, &fa); 268 case IBCS2_F_GETFL: 269 SCARG(&fa, fd) = SCARG(uap, fd); 270 SCARG(&fa, cmd) = F_GETFL; 271 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 272 error = fcntl(td, &fa); 273 if (error) 274 return error; 275 td->td_retval[0] = oflags2ioflags(td->td_retval[0]); 276 return error; 277 case IBCS2_F_SETFL: 278 SCARG(&fa, fd) = SCARG(uap, fd); 279 SCARG(&fa, cmd) = F_SETFL; 280 SCARG(&fa, arg) = (/* XXX */ int) 281 ioflags2oflags((int)SCARG(uap, arg)); 282 return fcntl(td, &fa); 283 284 case IBCS2_F_GETLK: 285 { 286 caddr_t sg = stackgap_init(); 287 flp = stackgap_alloc(&sg, sizeof(*flp)); 288 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 289 ibcs2_flock_len); 290 if (error) 291 return error; 292 cvt_iflock2flock(&ifl, flp); 293 SCARG(&fa, fd) = SCARG(uap, fd); 294 SCARG(&fa, cmd) = F_GETLK; 295 SCARG(&fa, arg) = (/* XXX */ int)flp; 296 error = fcntl(td, &fa); 297 if (error) 298 return error; 299 cvt_flock2iflock(flp, &ifl); 300 return copyout((caddr_t)&ifl, (caddr_t)SCARG(uap, arg), 301 ibcs2_flock_len); 302 } 303 304 case IBCS2_F_SETLK: 305 { 306 caddr_t sg = stackgap_init(); 307 flp = stackgap_alloc(&sg, sizeof(*flp)); 308 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 309 ibcs2_flock_len); 310 if (error) 311 return error; 312 cvt_iflock2flock(&ifl, flp); 313 SCARG(&fa, fd) = SCARG(uap, fd); 314 SCARG(&fa, cmd) = F_SETLK; 315 SCARG(&fa, arg) = (/* XXX */ int)flp; 316 317 return fcntl(td, &fa); 318 } 319 320 case IBCS2_F_SETLKW: 321 { 322 caddr_t sg = stackgap_init(); 323 flp = stackgap_alloc(&sg, sizeof(*flp)); 324 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 325 ibcs2_flock_len); 326 if (error) 327 return error; 328 cvt_iflock2flock(&ifl, flp); 329 SCARG(&fa, fd) = SCARG(uap, fd); 330 SCARG(&fa, cmd) = F_SETLKW; 331 SCARG(&fa, arg) = (/* XXX */ int)flp; 332 return fcntl(td, &fa); 333 } 334 } 335 return ENOSYS; 336} 337