Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/ibcs2_fcntl.c
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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 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD: releng/5.2/sys/i386/ibcs2/ibcs2_fcntl.c 115684 2003-06-02 06:48:51Z obrien $"); 30 31 #include "opt_spx_hack.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/fcntl.h> 36 #include <sys/file.h> 37 #include <sys/filedesc.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/sysproto.h> 41 #include <sys/ttycom.h> 42 43 #include <i386/ibcs2/ibcs2_fcntl.h> 44 #include <i386/ibcs2/ibcs2_signal.h> 45 #include <i386/ibcs2/ibcs2_proto.h> 46 #include <i386/ibcs2/ibcs2_util.h> 47 48 static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *); 49 static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *); 50 static int cvt_o_flags(int); 51 static int oflags2ioflags(int); 52 static int ioflags2oflags(int); 53 54 static int 55 cvt_o_flags(flags) 56 int flags; 57 { 58 int r = 0; 59 60 /* convert mode into NetBSD mode */ 61 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY; 62 if (flags & IBCS2_O_RDWR) r |= O_RDWR; 63 if (flags & (IBCS2_O_NDELAY | IBCS2_O_NONBLOCK)) r |= O_NONBLOCK; 64 if (flags & IBCS2_O_APPEND) r |= O_APPEND; 65 if (flags & IBCS2_O_SYNC) r |= O_FSYNC; 66 if (flags & IBCS2_O_CREAT) r |= O_CREAT; 67 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC /* | O_CREAT ??? */; 68 if (flags & IBCS2_O_EXCL) r |= O_EXCL; 69 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY; 70 if (flags & IBCS2_O_PRIV) r |= O_EXLOCK; 71 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY; 72 return r; 73 } 74 75 static void 76 cvt_flock2iflock(flp, iflp) 77 struct flock *flp; 78 struct ibcs2_flock *iflp; 79 { 80 switch (flp->l_type) { 81 case F_RDLCK: 82 iflp->l_type = IBCS2_F_RDLCK; 83 break; 84 case F_WRLCK: 85 iflp->l_type = IBCS2_F_WRLCK; 86 break; 87 case F_UNLCK: 88 iflp->l_type = IBCS2_F_UNLCK; 89 break; 90 } 91 iflp->l_whence = (short)flp->l_whence; 92 iflp->l_start = (ibcs2_off_t)flp->l_start; 93 iflp->l_len = (ibcs2_off_t)flp->l_len; 94 iflp->l_sysid = 0; 95 iflp->l_pid = (ibcs2_pid_t)flp->l_pid; 96 } 97 98 #ifdef DEBUG_IBCS2 99 static void 100 print_flock(struct flock *flp) 101 { 102 printf("flock: start=%x len=%x pid=%d type=%d whence=%d\n", 103 (int)flp->l_start, (int)flp->l_len, (int)flp->l_pid, 104 flp->l_type, flp->l_whence); 105 } 106 #endif 107 108 static void 109 cvt_iflock2flock(iflp, flp) 110 struct ibcs2_flock *iflp; 111 struct flock *flp; 112 { 113 flp->l_start = (off_t)iflp->l_start; 114 flp->l_len = (off_t)iflp->l_len; 115 flp->l_pid = (pid_t)iflp->l_pid; 116 switch (iflp->l_type) { 117 case IBCS2_F_RDLCK: 118 flp->l_type = F_RDLCK; 119 break; 120 case IBCS2_F_WRLCK: 121 flp->l_type = F_WRLCK; 122 break; 123 case IBCS2_F_UNLCK: 124 flp->l_type = F_UNLCK; 125 break; 126 } 127 flp->l_whence = iflp->l_whence; 128 } 129 130 /* convert iBCS2 mode into NetBSD mode */ 131 static int 132 ioflags2oflags(flags) 133 int flags; 134 { 135 int r = 0; 136 137 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY; 138 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY; 139 if (flags & IBCS2_O_RDWR) r |= O_RDWR; 140 if (flags & IBCS2_O_NDELAY) r |= O_NONBLOCK; 141 if (flags & IBCS2_O_APPEND) r |= O_APPEND; 142 if (flags & IBCS2_O_SYNC) r |= O_FSYNC; 143 if (flags & IBCS2_O_NONBLOCK) r |= O_NONBLOCK; 144 if (flags & IBCS2_O_CREAT) r |= O_CREAT; 145 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC; 146 if (flags & IBCS2_O_EXCL) r |= O_EXCL; 147 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY; 148 return r; 149 } 150 151 /* convert NetBSD mode into iBCS2 mode */ 152 static int 153 oflags2ioflags(flags) 154 int flags; 155 { 156 int r = 0; 157 158 if (flags & O_RDONLY) r |= IBCS2_O_RDONLY; 159 if (flags & O_WRONLY) r |= IBCS2_O_WRONLY; 160 if (flags & O_RDWR) r |= IBCS2_O_RDWR; 161 if (flags & O_NDELAY) r |= IBCS2_O_NONBLOCK; 162 if (flags & O_APPEND) r |= IBCS2_O_APPEND; 163 if (flags & O_FSYNC) r |= IBCS2_O_SYNC; 164 if (flags & O_NONBLOCK) r |= IBCS2_O_NONBLOCK; 165 if (flags & O_CREAT) r |= IBCS2_O_CREAT; 166 if (flags & O_TRUNC) r |= IBCS2_O_TRUNC; 167 if (flags & O_EXCL) r |= IBCS2_O_EXCL; 168 if (flags & O_NOCTTY) r |= IBCS2_O_NOCTTY; 169 return r; 170 } 171 172 int 173 ibcs2_open(td, uap) 174 struct thread *td; 175 struct ibcs2_open_args *uap; 176 { 177 struct proc *p = td->td_proc; 178 int noctty = uap->flags & IBCS2_O_NOCTTY; 179 int ret; 180 caddr_t sg = stackgap_init(); 181 182 uap->flags = cvt_o_flags(uap->flags); 183 if (uap->flags & O_CREAT) 184 CHECKALTCREAT(td, &sg, uap->path); 185 else 186 CHECKALTEXIST(td, &sg, uap->path); 187 ret = open(td, (struct open_args *)uap); 188 189 #ifdef SPX_HACK 190 if (ret == ENXIO) { 191 if (!strcmp(uap->path, "/compat/ibcs2/dev/spx")) 192 ret = spx_open(td, uap); 193 } else 194 #endif /* SPX_HACK */ 195 PROC_LOCK(p); 196 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 197 struct file *fp; 198 int error; 199 200 error = fget(td, td->td_retval[0], &fp); 201 PROC_UNLOCK(p); 202 if (error) 203 return (EBADF); 204 205 /* ignore any error, just give it a try */ 206 if (fp->f_type == DTYPE_VNODE) 207 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred, 208 td); 209 fdrop(fp, td); 210 } else 211 PROC_UNLOCK(p); 212 return ret; 213 } 214 215 int 216 ibcs2_creat(td, uap) 217 struct thread *td; 218 struct ibcs2_creat_args *uap; 219 { 220 struct open_args cup; 221 caddr_t sg = stackgap_init(); 222 223 CHECKALTCREAT(td, &sg, uap->path); 224 cup.path = uap->path; 225 cup.mode = uap->mode; 226 cup.flags = O_WRONLY | O_CREAT | O_TRUNC; 227 return open(td, &cup); 228 } 229 230 int 231 ibcs2_access(td, uap) 232 struct thread *td; 233 struct ibcs2_access_args *uap; 234 { 235 struct access_args cup; 236 caddr_t sg = stackgap_init(); 237 238 CHECKALTEXIST(td, &sg, uap->path); 239 cup.path = uap->path; 240 cup.flags = uap->flags; 241 return access(td, &cup); 242 } 243 244 int 245 ibcs2_fcntl(td, uap) 246 struct thread *td; 247 struct ibcs2_fcntl_args *uap; 248 { 249 int error; 250 struct fcntl_args fa; 251 struct flock *flp; 252 struct ibcs2_flock ifl; 253 254 switch(uap->cmd) { 255 case IBCS2_F_DUPFD: 256 fa.fd = uap->fd; 257 fa.cmd = F_DUPFD; 258 fa.arg = (/* XXX */ int)uap->arg; 259 return fcntl(td, &fa); 260 case IBCS2_F_GETFD: 261 fa.fd = uap->fd; 262 fa.cmd = F_GETFD; 263 fa.arg = (/* XXX */ int)uap->arg; 264 return fcntl(td, &fa); 265 case IBCS2_F_SETFD: 266 fa.fd = uap->fd; 267 fa.cmd = F_SETFD; 268 fa.arg = (/* XXX */ int)uap->arg; 269 return fcntl(td, &fa); 270 case IBCS2_F_GETFL: 271 fa.fd = uap->fd; 272 fa.cmd = F_GETFL; 273 fa.arg = (/* XXX */ int)uap->arg; 274 error = fcntl(td, &fa); 275 if (error) 276 return error; 277 td->td_retval[0] = oflags2ioflags(td->td_retval[0]); 278 return error; 279 case IBCS2_F_SETFL: 280 fa.fd = uap->fd; 281 fa.cmd = F_SETFL; 282 fa.arg = (/* XXX */ int) 283 ioflags2oflags((int)uap->arg); 284 return fcntl(td, &fa); 285 286 case IBCS2_F_GETLK: 287 { 288 caddr_t sg = stackgap_init(); 289 flp = stackgap_alloc(&sg, sizeof(*flp)); 290 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl, 291 ibcs2_flock_len); 292 if (error) 293 return error; 294 cvt_iflock2flock(&ifl, flp); 295 fa.fd = uap->fd; 296 fa.cmd = F_GETLK; 297 fa.arg = (/* XXX */ int)flp; 298 error = fcntl(td, &fa); 299 if (error) 300 return error; 301 cvt_flock2iflock(flp, &ifl); 302 return copyout((caddr_t)&ifl, (caddr_t)uap->arg, 303 ibcs2_flock_len); 304 } 305 306 case IBCS2_F_SETLK: 307 { 308 caddr_t sg = stackgap_init(); 309 flp = stackgap_alloc(&sg, sizeof(*flp)); 310 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl, 311 ibcs2_flock_len); 312 if (error) 313 return error; 314 cvt_iflock2flock(&ifl, flp); 315 fa.fd = uap->fd; 316 fa.cmd = F_SETLK; 317 fa.arg = (/* XXX */ int)flp; 318 319 return fcntl(td, &fa); 320 } 321 322 case IBCS2_F_SETLKW: 323 { 324 caddr_t sg = stackgap_init(); 325 flp = stackgap_alloc(&sg, sizeof(*flp)); 326 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl, 327 ibcs2_flock_len); 328 if (error) 329 return error; 330 cvt_iflock2flock(&ifl, flp); 331 fa.fd = uap->fd; 332 fa.cmd = F_SETLKW; 333 fa.arg = (/* XXX */ int)flp; 334 return fcntl(td, &fa); 335 } 336 } 337 return ENOSYS; 338 }
Cache object: 29e070b304eb953520755a1a67a50037
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