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: stable/9/sys/i386/ibcs2/ibcs2_fcntl.c 224778 2011-08-11 12:30:23Z rwatson $");
30
31 #include "opt_spx_hack.h"
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/capability.h>
36 #include <sys/fcntl.h>
37 #include <sys/file.h>
38 #include <sys/filedesc.h>
39 #include <sys/lock.h>
40 #include <sys/malloc.h>
41 #include <sys/mutex.h>
42 #include <sys/syscallsubr.h>
43 #include <sys/sysproto.h>
44 #include <sys/ttycom.h>
45
46 #include <i386/ibcs2/ibcs2_fcntl.h>
47 #include <i386/ibcs2/ibcs2_signal.h>
48 #include <i386/ibcs2/ibcs2_proto.h>
49 #include <i386/ibcs2/ibcs2_util.h>
50
51 static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *);
52 static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *);
53 static int cvt_o_flags(int);
54 static int oflags2ioflags(int);
55 static int ioflags2oflags(int);
56
57 static int
cvt_o_flags(flags)58 cvt_o_flags(flags)
59 int flags;
60 {
61 int r = 0;
62
63 /* convert mode into NetBSD mode */
64 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
65 if (flags & IBCS2_O_RDWR) r |= O_RDWR;
66 if (flags & (IBCS2_O_NDELAY | IBCS2_O_NONBLOCK)) r |= O_NONBLOCK;
67 if (flags & IBCS2_O_APPEND) r |= O_APPEND;
68 if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
69 if (flags & IBCS2_O_CREAT) r |= O_CREAT;
70 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC /* | O_CREAT ??? */;
71 if (flags & IBCS2_O_EXCL) r |= O_EXCL;
72 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY;
73 if (flags & IBCS2_O_PRIV) r |= O_EXLOCK;
74 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY;
75 return r;
76 }
77
78 static void
cvt_flock2iflock(flp,iflp)79 cvt_flock2iflock(flp, iflp)
80 struct flock *flp;
81 struct ibcs2_flock *iflp;
82 {
83 switch (flp->l_type) {
84 case F_RDLCK:
85 iflp->l_type = IBCS2_F_RDLCK;
86 break;
87 case F_WRLCK:
88 iflp->l_type = IBCS2_F_WRLCK;
89 break;
90 case F_UNLCK:
91 iflp->l_type = IBCS2_F_UNLCK;
92 break;
93 }
94 iflp->l_whence = (short)flp->l_whence;
95 iflp->l_start = (ibcs2_off_t)flp->l_start;
96 iflp->l_len = (ibcs2_off_t)flp->l_len;
97 iflp->l_sysid = flp->l_sysid;
98 iflp->l_pid = (ibcs2_pid_t)flp->l_pid;
99 }
100
101 #ifdef DEBUG_IBCS2
102 static void
print_flock(struct flock * flp)103 print_flock(struct flock *flp)
104 {
105 printf("flock: start=%x len=%x pid=%d type=%d whence=%d\n",
106 (int)flp->l_start, (int)flp->l_len, (int)flp->l_pid,
107 flp->l_type, flp->l_whence);
108 }
109 #endif
110
111 static void
cvt_iflock2flock(iflp,flp)112 cvt_iflock2flock(iflp, flp)
113 struct ibcs2_flock *iflp;
114 struct flock *flp;
115 {
116 flp->l_start = (off_t)iflp->l_start;
117 flp->l_len = (off_t)iflp->l_len;
118 flp->l_pid = (pid_t)iflp->l_pid;
119 switch (iflp->l_type) {
120 case IBCS2_F_RDLCK:
121 flp->l_type = F_RDLCK;
122 break;
123 case IBCS2_F_WRLCK:
124 flp->l_type = F_WRLCK;
125 break;
126 case IBCS2_F_UNLCK:
127 flp->l_type = F_UNLCK;
128 break;
129 }
130 flp->l_whence = iflp->l_whence;
131 flp->l_sysid = iflp->l_sysid;
132 }
133
134 /* convert iBCS2 mode into NetBSD mode */
135 static int
ioflags2oflags(flags)136 ioflags2oflags(flags)
137 int flags;
138 {
139 int r = 0;
140
141 if (flags & IBCS2_O_RDONLY) r |= O_RDONLY;
142 if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
143 if (flags & IBCS2_O_RDWR) r |= O_RDWR;
144 if (flags & IBCS2_O_NDELAY) r |= O_NONBLOCK;
145 if (flags & IBCS2_O_APPEND) r |= O_APPEND;
146 if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
147 if (flags & IBCS2_O_NONBLOCK) r |= O_NONBLOCK;
148 if (flags & IBCS2_O_CREAT) r |= O_CREAT;
149 if (flags & IBCS2_O_TRUNC) r |= O_TRUNC;
150 if (flags & IBCS2_O_EXCL) r |= O_EXCL;
151 if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY;
152 return r;
153 }
154
155 /* convert NetBSD mode into iBCS2 mode */
156 static int
oflags2ioflags(flags)157 oflags2ioflags(flags)
158 int flags;
159 {
160 int r = 0;
161
162 if (flags & O_RDONLY) r |= IBCS2_O_RDONLY;
163 if (flags & O_WRONLY) r |= IBCS2_O_WRONLY;
164 if (flags & O_RDWR) r |= IBCS2_O_RDWR;
165 if (flags & O_NDELAY) r |= IBCS2_O_NONBLOCK;
166 if (flags & O_APPEND) r |= IBCS2_O_APPEND;
167 if (flags & O_FSYNC) r |= IBCS2_O_SYNC;
168 if (flags & O_NONBLOCK) r |= IBCS2_O_NONBLOCK;
169 if (flags & O_CREAT) r |= IBCS2_O_CREAT;
170 if (flags & O_TRUNC) r |= IBCS2_O_TRUNC;
171 if (flags & O_EXCL) r |= IBCS2_O_EXCL;
172 if (flags & O_NOCTTY) r |= IBCS2_O_NOCTTY;
173 return r;
174 }
175
176 int
ibcs2_open(td,uap)177 ibcs2_open(td, uap)
178 struct thread *td;
179 struct ibcs2_open_args *uap;
180 {
181 struct proc *p;
182 char *path;
183 int flags, noctty, ret;
184
185 p = td->td_proc;
186 noctty = uap->flags & IBCS2_O_NOCTTY;
187 flags = cvt_o_flags(uap->flags);
188 if (uap->flags & O_CREAT)
189 CHECKALTCREAT(td, uap->path, &path);
190 else
191 CHECKALTEXIST(td, uap->path, &path);
192 ret = kern_open(td, path, UIO_SYSSPACE, flags, uap->mode);
193
194 #ifdef SPX_HACK
195 if (ret == ENXIO) {
196 if (!strcmp(path, "/compat/ibcs2/dev/spx"))
197 ret = spx_open(td);
198 free(path, M_TEMP);
199 } else
200 #endif /* SPX_HACK */
201 free(path, M_TEMP);
202 PROC_LOCK(p);
203 if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
204 struct file *fp;
205 int error;
206
207 error = fget(td, td->td_retval[0], CAP_IOCTL, &fp);
208 PROC_UNLOCK(p);
209 if (error)
210 return (EBADF);
211
212 /* ignore any error, just give it a try */
213 if (fp->f_type == DTYPE_VNODE)
214 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred,
215 td);
216 fdrop(fp, td);
217 } else
218 PROC_UNLOCK(p);
219 return ret;
220 }
221
222 int
ibcs2_creat(td,uap)223 ibcs2_creat(td, uap)
224 struct thread *td;
225 struct ibcs2_creat_args *uap;
226 {
227 char *path;
228 int error;
229
230 CHECKALTCREAT(td, uap->path, &path);
231 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC,
232 uap->mode);
233 free(path, M_TEMP);
234 return (error);
235 }
236
237 int
ibcs2_access(td,uap)238 ibcs2_access(td, uap)
239 struct thread *td;
240 struct ibcs2_access_args *uap;
241 {
242 char *path;
243 int error;
244
245 CHECKALTEXIST(td, uap->path, &path);
246 error = kern_access(td, path, UIO_SYSSPACE, uap->flags);
247 free(path, M_TEMP);
248 return (error);
249 }
250
251 int
ibcs2_fcntl(td,uap)252 ibcs2_fcntl(td, uap)
253 struct thread *td;
254 struct ibcs2_fcntl_args *uap;
255 {
256 intptr_t arg;
257 int error;
258 struct flock fl;
259 struct ibcs2_flock ifl;
260
261 arg = (intptr_t)uap->arg;
262 switch(uap->cmd) {
263 case IBCS2_F_DUPFD:
264 return (kern_fcntl(td, uap->fd, F_DUPFD, arg));
265 case IBCS2_F_GETFD:
266 return (kern_fcntl(td, uap->fd, F_GETFD, arg));
267 case IBCS2_F_SETFD:
268 return (kern_fcntl(td, uap->fd, F_SETFD, arg));
269 case IBCS2_F_GETFL:
270 error = kern_fcntl(td, uap->fd, F_GETFL, arg);
271 if (error)
272 return error;
273 td->td_retval[0] = oflags2ioflags(td->td_retval[0]);
274 return error;
275 case IBCS2_F_SETFL:
276 return (kern_fcntl(td, uap->fd, F_SETFL,
277 ioflags2oflags(arg)));
278
279 case IBCS2_F_GETLK:
280 {
281 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
282 ibcs2_flock_len);
283 if (error)
284 return error;
285 cvt_iflock2flock(&ifl, &fl);
286 error = kern_fcntl(td, uap->fd, F_GETLK, (intptr_t)&fl);
287 if (error)
288 return error;
289 cvt_flock2iflock(&fl, &ifl);
290 return copyout((caddr_t)&ifl, (caddr_t)uap->arg,
291 ibcs2_flock_len);
292 }
293
294 case IBCS2_F_SETLK:
295 {
296 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
297 ibcs2_flock_len);
298 if (error)
299 return error;
300 cvt_iflock2flock(&ifl, &fl);
301 return (kern_fcntl(td, uap->fd, F_SETLK, (intptr_t)&fl));
302 }
303
304 case IBCS2_F_SETLKW:
305 {
306 error = copyin((caddr_t)uap->arg, (caddr_t)&ifl,
307 ibcs2_flock_len);
308 if (error)
309 return error;
310 cvt_iflock2flock(&ifl, &fl);
311 return (kern_fcntl(td, uap->fd, F_SETLKW, (intptr_t)&fl));
312 }
313 }
314 return ENOSYS;
315 }
316