ibcs2_fcntl.c revision 76166
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 76166 2001-05-01 08:13:21Z markm $ 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 __P((struct ibcs2_flock *, struct flock *)); 48static void cvt_flock2iflock __P((struct flock *, struct ibcs2_flock *)); 49static int cvt_o_flags __P((int)); 50static int oflags2ioflags __P((int)); 51static int ioflags2oflags __P((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(p, uap) 173 struct proc *p; 174 struct ibcs2_open_args *uap; 175{ 176 int noctty = SCARG(uap, flags) & IBCS2_O_NOCTTY; 177 int ret; 178 caddr_t sg = stackgap_init(); 179 180 SCARG(uap, flags) = cvt_o_flags(SCARG(uap, flags)); 181 if (SCARG(uap, flags) & O_CREAT) 182 CHECKALTCREAT(p, &sg, SCARG(uap, path)); 183 else 184 CHECKALTEXIST(p, &sg, SCARG(uap, path)); 185 ret = open(p, (struct open_args *)uap); 186 187#ifdef SPX_HACK 188 if (ret == ENXIO) { 189 if (!strcmp(SCARG(uap, path), "/compat/ibcs2/dev/spx")) 190 ret = spx_open(p, uap); 191 } else 192#endif /* SPX_HACK */ 193 PROC_LOCK(p); 194 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 195 struct filedesc *fdp = p->p_fd; 196 struct file *fp = fdp->fd_ofiles[p->p_retval[0]]; 197 198 PROC_UNLOCK(p); 199 /* ignore any error, just give it a try */ 200 if (fp->f_type == DTYPE_VNODE) 201 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p); 202 } else 203 PROC_UNLOCK(p); 204 return ret; 205} 206 207int 208ibcs2_creat(p, uap) 209 struct proc *p; 210 struct ibcs2_creat_args *uap; 211{ 212 struct open_args cup; 213 caddr_t sg = stackgap_init(); 214 215 CHECKALTCREAT(p, &sg, SCARG(uap, path)); 216 SCARG(&cup, path) = SCARG(uap, path); 217 SCARG(&cup, mode) = SCARG(uap, mode); 218 SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC; 219 return open(p, &cup); 220} 221 222int 223ibcs2_access(p, uap) 224 struct proc *p; 225 struct ibcs2_access_args *uap; 226{ 227 struct access_args cup; 228 caddr_t sg = stackgap_init(); 229 230 CHECKALTEXIST(p, &sg, SCARG(uap, path)); 231 SCARG(&cup, path) = SCARG(uap, path); 232 SCARG(&cup, flags) = SCARG(uap, flags); 233 return access(p, &cup); 234} 235 236int 237ibcs2_fcntl(p, uap) 238 struct proc *p; 239 struct ibcs2_fcntl_args *uap; 240{ 241 int error; 242 struct fcntl_args fa; 243 struct flock *flp; 244 struct ibcs2_flock ifl; 245 246 switch(SCARG(uap, cmd)) { 247 case IBCS2_F_DUPFD: 248 SCARG(&fa, fd) = SCARG(uap, fd); 249 SCARG(&fa, cmd) = F_DUPFD; 250 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 251 return fcntl(p, &fa); 252 case IBCS2_F_GETFD: 253 SCARG(&fa, fd) = SCARG(uap, fd); 254 SCARG(&fa, cmd) = F_GETFD; 255 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 256 return fcntl(p, &fa); 257 case IBCS2_F_SETFD: 258 SCARG(&fa, fd) = SCARG(uap, fd); 259 SCARG(&fa, cmd) = F_SETFD; 260 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 261 return fcntl(p, &fa); 262 case IBCS2_F_GETFL: 263 SCARG(&fa, fd) = SCARG(uap, fd); 264 SCARG(&fa, cmd) = F_GETFL; 265 SCARG(&fa, arg) = (/* XXX */ int)SCARG(uap, arg); 266 error = fcntl(p, &fa); 267 if (error) 268 return error; 269 p->p_retval[0] = oflags2ioflags(p->p_retval[0]); 270 return error; 271 case IBCS2_F_SETFL: 272 SCARG(&fa, fd) = SCARG(uap, fd); 273 SCARG(&fa, cmd) = F_SETFL; 274 SCARG(&fa, arg) = (/* XXX */ int) 275 ioflags2oflags((int)SCARG(uap, arg)); 276 return fcntl(p, &fa); 277 278 case IBCS2_F_GETLK: 279 { 280 caddr_t sg = stackgap_init(); 281 flp = stackgap_alloc(&sg, sizeof(*flp)); 282 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 283 ibcs2_flock_len); 284 if (error) 285 return error; 286 cvt_iflock2flock(&ifl, flp); 287 SCARG(&fa, fd) = SCARG(uap, fd); 288 SCARG(&fa, cmd) = F_GETLK; 289 SCARG(&fa, arg) = (/* XXX */ int)flp; 290 error = fcntl(p, &fa); 291 if (error) 292 return error; 293 cvt_flock2iflock(flp, &ifl); 294 return copyout((caddr_t)&ifl, (caddr_t)SCARG(uap, arg), 295 ibcs2_flock_len); 296 } 297 298 case IBCS2_F_SETLK: 299 { 300 caddr_t sg = stackgap_init(); 301 flp = stackgap_alloc(&sg, sizeof(*flp)); 302 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 303 ibcs2_flock_len); 304 if (error) 305 return error; 306 cvt_iflock2flock(&ifl, flp); 307 SCARG(&fa, fd) = SCARG(uap, fd); 308 SCARG(&fa, cmd) = F_SETLK; 309 SCARG(&fa, arg) = (/* XXX */ int)flp; 310 311 return fcntl(p, &fa); 312 } 313 314 case IBCS2_F_SETLKW: 315 { 316 caddr_t sg = stackgap_init(); 317 flp = stackgap_alloc(&sg, sizeof(*flp)); 318 error = copyin((caddr_t)SCARG(uap, arg), (caddr_t)&ifl, 319 ibcs2_flock_len); 320 if (error) 321 return error; 322 cvt_iflock2flock(&ifl, flp); 323 SCARG(&fa, fd) = SCARG(uap, fd); 324 SCARG(&fa, cmd) = F_SETLKW; 325 SCARG(&fa, arg) = (/* XXX */ int)flp; 326 return fcntl(p, &fa); 327 } 328 } 329 return ENOSYS; 330} 331