2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994, 1997 Christos Zoulas.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Christos Zoulas.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $FreeBSD: src/sys/svr4/svr4_fcntl.c,v 1.7 1999/12/12 10:27:04 newton Exp $
32 * $DragonFly: src/sys/emulation/svr4/Attic/svr4_fcntl.c,v 1.7 2003/07/26 18:12:46 dillon Exp $
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/namei.h>
40 #include <sys/filedesc.h>
41 /*#include <sys/ioctl.h>*/
42 #include <sys/kernel.h>
43 #include <sys/mount.h>
44 #include <sys/malloc.h>
45 #include <sys/vnode.h>
46 #include <sys/unistd.h>
48 #include <sys/sysproto.h>
50 #include <svr4/svr4.h>
51 #include <svr4/svr4_types.h>
52 #include <svr4/svr4_signal.h>
53 #include <svr4/svr4_proto.h>
54 #include <svr4/svr4_util.h>
55 #include <svr4/svr4_fcntl.h>
57 static int svr4_to_bsd_flags __P((int));
58 static u_long svr4_to_bsd_cmd __P((u_long));
59 static int fd_revoke __P((struct thread *, int));
60 static int fd_truncate __P((struct thread *, int, struct flock *, int *));
61 static int bsd_to_svr4_flags __P((int));
62 static void bsd_to_svr4_flock __P((struct flock *, struct svr4_flock *));
63 static void svr4_to_bsd_flock __P((struct svr4_flock *, struct flock *));
64 static void bsd_to_svr4_flock64 __P((struct flock *, struct svr4_flock64 *));
65 static void svr4_to_bsd_flock64 __P((struct svr4_flock64 *, struct flock *));
98 r |= (l & SVR4_O_RDONLY) ? O_RDONLY : 0;
99 r |= (l & SVR4_O_WRONLY) ? O_WRONLY : 0;
100 r |= (l & SVR4_O_RDWR) ? O_RDWR : 0;
101 r |= (l & SVR4_O_NDELAY) ? O_NONBLOCK : 0;
102 r |= (l & SVR4_O_APPEND) ? O_APPEND : 0;
103 r |= (l & SVR4_O_SYNC) ? O_FSYNC : 0;
104 r |= (l & SVR4_O_NONBLOCK) ? O_NONBLOCK : 0;
105 r |= (l & SVR4_O_PRIV) ? O_EXLOCK : 0;
106 r |= (l & SVR4_O_CREAT) ? O_CREAT : 0;
107 r |= (l & SVR4_O_TRUNC) ? O_TRUNC : 0;
108 r |= (l & SVR4_O_EXCL) ? O_EXCL : 0;
109 r |= (l & SVR4_O_NOCTTY) ? O_NOCTTY : 0;
118 r |= (l & O_RDONLY) ? SVR4_O_RDONLY : 0;
119 r |= (l & O_WRONLY) ? SVR4_O_WRONLY : 0;
120 r |= (l & O_RDWR) ? SVR4_O_RDWR : 0;
121 r |= (l & O_NDELAY) ? SVR4_O_NONBLOCK : 0;
122 r |= (l & O_APPEND) ? SVR4_O_APPEND : 0;
123 r |= (l & O_FSYNC) ? SVR4_O_SYNC : 0;
124 r |= (l & O_NONBLOCK) ? SVR4_O_NONBLOCK : 0;
125 r |= (l & O_EXLOCK) ? SVR4_O_PRIV : 0;
126 r |= (l & O_CREAT) ? SVR4_O_CREAT : 0;
127 r |= (l & O_TRUNC) ? SVR4_O_TRUNC : 0;
128 r |= (l & O_EXCL) ? SVR4_O_EXCL : 0;
129 r |= (l & O_NOCTTY) ? SVR4_O_NOCTTY : 0;
135 bsd_to_svr4_flock(iflp, oflp)
137 struct svr4_flock *oflp;
139 switch (iflp->l_type) {
141 oflp->l_type = SVR4_F_RDLCK;
144 oflp->l_type = SVR4_F_WRLCK;
147 oflp->l_type = SVR4_F_UNLCK;
154 oflp->l_whence = (short) iflp->l_whence;
155 oflp->l_start = (svr4_off_t) iflp->l_start;
156 oflp->l_len = (svr4_off_t) iflp->l_len;
158 oflp->l_pid = (svr4_pid_t) iflp->l_pid;
163 svr4_to_bsd_flock(iflp, oflp)
164 struct svr4_flock *iflp;
167 switch (iflp->l_type) {
169 oflp->l_type = F_RDLCK;
172 oflp->l_type = F_WRLCK;
175 oflp->l_type = F_UNLCK;
182 oflp->l_whence = iflp->l_whence;
183 oflp->l_start = (off_t) iflp->l_start;
184 oflp->l_len = (off_t) iflp->l_len;
185 oflp->l_pid = (pid_t) iflp->l_pid;
190 bsd_to_svr4_flock64(iflp, oflp)
192 struct svr4_flock64 *oflp;
194 switch (iflp->l_type) {
196 oflp->l_type = SVR4_F_RDLCK;
199 oflp->l_type = SVR4_F_WRLCK;
202 oflp->l_type = SVR4_F_UNLCK;
209 oflp->l_whence = (short) iflp->l_whence;
210 oflp->l_start = (svr4_off64_t) iflp->l_start;
211 oflp->l_len = (svr4_off64_t) iflp->l_len;
213 oflp->l_pid = (svr4_pid_t) iflp->l_pid;
218 svr4_to_bsd_flock64(iflp, oflp)
219 struct svr4_flock64 *iflp;
222 switch (iflp->l_type) {
224 oflp->l_type = F_RDLCK;
227 oflp->l_type = F_WRLCK;
230 oflp->l_type = F_UNLCK;
237 oflp->l_whence = iflp->l_whence;
238 oflp->l_start = (off_t) iflp->l_start;
239 oflp->l_len = (off_t) iflp->l_len;
240 oflp->l_pid = (pid_t) iflp->l_pid;
246 fd_revoke(struct thread *td, int fd)
248 struct proc *p = td->td_proc;
249 struct filedesc *fdp;
258 if ((u_int)fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL)
261 if (fp->f_type != DTYPE_VNODE)
264 vp = (struct vnode *) fp->f_data;
266 if (vp->v_type != VCHR && vp->v_type != VBLK) {
271 if ((error = VOP_GETATTR(vp, &vattr, td)) != 0)
274 if (p->p_ucred->cr_uid != vattr.va_uid &&
275 (error = suser(p->p_thread)) != 0)
279 VOP_REVOKE(vp, REVOKEALL);
287 fd_truncate(struct thread *td, int fd, struct flock *flp, int *retval)
289 struct proc *p = td->td_proc;
290 struct filedesc *fdp;
296 struct ftruncate_args ft;
302 * We only support truncating the file.
304 if ((u_int)fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL)
307 vp = (struct vnode *)fp->f_data;
308 if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO)
311 if ((error = VOP_GETATTR(vp, &vattr, td)) != 0)
314 length = vattr.va_size;
316 switch (flp->l_whence) {
318 start = fp->f_offset + flp->l_start;
322 start = flp->l_start + length;
326 start = flp->l_start;
333 if (start + flp->l_len < length) {
334 /* We don't support free'ing in the middle of the file */
339 SCARG(&ft, length) = start;
340 error = ftruncate(&ft);
341 *retval = ft.lmsg.u.ms_result;
346 svr4_sys_open(struct svr4_sys_open_args *uap)
348 struct thread *td = curthread; /* XXX */
349 struct proc *p = td->td_proc;
350 struct open_args cup;
353 caddr_t sg = stackgap_init();
354 CHECKALTEXIST(&sg, SCARG(uap, path));
356 cup.lmsg.u.ms_result = 0;
357 cup.path = uap->path;
358 cup.flags = svr4_to_bsd_flags(uap->flags);
359 cup.mode = uap->mode;
363 /* uprintf("svr4_open(%s, 0x%0x, 0%o): %d\n", uap->path,
364 uap->flags, uap->mode, error);*/
369 retval = uap->lmsg.u.ms_result = cup.lmsg.u.ms_result;
371 if (!(SCARG(&cup, flags) & O_NOCTTY) && SESS_LEADER(p) &&
372 !(p->p_flag & P_CONTROLT)) {
374 struct filedesc *fdp = p->p_fd;
375 struct file *fp = fdp->fd_ofiles[retval];
377 /* ignore any error, just give it a try */
378 if (fp->f_type == DTYPE_VNODE)
379 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p);
386 svr4_sys_open64(struct svr4_sys_open64_args *uap)
388 return svr4_sys_open((struct svr4_sys_open_args *)uap);
392 svr4_sys_creat(struct svr4_sys_creat_args *uap)
394 struct open_args cup;
397 caddr_t sg = stackgap_init();
398 CHECKALTEXIST(&sg, SCARG(uap, path));
400 SCARG(&cup, path) = SCARG(uap, path);
401 SCARG(&cup, mode) = SCARG(uap, mode);
402 SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC;
404 cup.lmsg.u.ms_result = 0;
406 uap->lmsg.u.ms_result = cup.lmsg.u.ms_result;
411 svr4_sys_creat64(struct svr4_sys_creat64_args *uap)
413 return svr4_sys_creat((struct svr4_sys_creat_args *)uap);
417 svr4_sys_llseek(struct svr4_sys_llseek_args *v)
419 struct svr4_sys_llseek_args *uap = v;
420 struct lseek_args ap;
422 SCARG(&ap, fd) = SCARG(uap, fd);
424 #if BYTE_ORDER == BIG_ENDIAN
425 SCARG(&ap, offset) = (((long long) SCARG(uap, offset1)) << 32) |
428 SCARG(&ap, offset) = (((long long) SCARG(uap, offset2)) << 32) |
431 SCARG(&ap, whence) = SCARG(uap, whence);
437 svr4_sys_access(struct svr4_sys_access_args *uap)
439 struct thread *td = curthread; /* XXX */
440 struct proc *p = td->td_proc;
441 struct access_args cup;
444 caddr_t sg = stackgap_init();
445 CHECKALTEXIST(&sg, SCARG(uap, path));
449 SCARG(&cup, path) = SCARG(uap, path);
450 SCARG(&cup, flags) = SCARG(uap, flags);
451 cup.lmsg.u.ms_result = 0;
452 error = access(&cup);
453 uap->lmsg.u.ms_result = cup.lmsg.u.ms_result;
459 svr4_sys_pread(struct svr4_sys_pread_args *uap)
461 struct pread_args pra;
465 * Just translate the args structure and call the NetBSD
466 * pread(2) system call (offset type is 64-bit in NetBSD).
468 SCARG(&pra, fd) = SCARG(uap, fd);
469 SCARG(&pra, buf) = SCARG(uap, buf);
470 SCARG(&pra, nbyte) = SCARG(uap, nbyte);
471 SCARG(&pra, offset) = SCARG(uap, off);
473 pra.lmsg.u.ms_result = 0;
475 uap->lmsg.u.ms_result = pra.lmsg.u.ms_result;
482 svr4_sys_pread64(struct thread *td, void *v, register_t *retval)
484 struct svr4_sys_pread64_args *uap = v;
485 struct sys_pread_args pra;
489 * Just translate the args structure and call the NetBSD
490 * pread(2) system call (offset type is 64-bit in NetBSD).
492 SCARG(&pra, fd) = SCARG(uap, fd);
493 SCARG(&pra, buf) = SCARG(uap, buf);
494 SCARG(&pra, nbyte) = SCARG(uap, nbyte);
495 SCARG(&pra, offset) = SCARG(uap, off);
497 pra.lmsg.u.ms_result = 0;
498 error = sys_pread(&pra, retval);
499 uap->lmsg.u.ms_result = pra.lmsg.u.ms_result;
506 svr4_sys_pwrite(struct svr4_sys_pwrite_args *uap)
508 struct pwrite_args pwa;
512 * Just translate the args structure and call the NetBSD
513 * pwrite(2) system call (offset type is 64-bit in NetBSD).
515 SCARG(&pwa, fd) = SCARG(uap, fd);
516 SCARG(&pwa, buf) = SCARG(uap, buf);
517 SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
518 SCARG(&pwa, offset) = SCARG(uap, off);
520 pwa.lmsg.u.ms_result = 0;
521 error = pwrite(&pwa);
522 uap->lmsg.u.ms_result = pwa.lmsg.u.ms_result;
529 svr4_sys_pwrite64(struct thread *td, void *v, register_t *retval)
531 struct svr4_sys_pwrite64_args *uap = v;
532 struct sys_pwrite_args pwa;
535 * Just translate the args structure and call the NetBSD
536 * pwrite(2) system call (offset type is 64-bit in NetBSD).
538 SCARG(&pwa, fd) = SCARG(uap, fd);
539 SCARG(&pwa, buf) = SCARG(uap, buf);
540 SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
541 SCARG(&pwa, offset) = SCARG(uap, off);
543 return (sys_pwrite(p, &pwa, retval));
548 svr4_sys_fcntl(struct svr4_sys_fcntl_args *uap)
550 struct thread *td = curthread; /* XXX */
551 struct proc *p = td->td_proc;
553 struct fcntl_args fa;
557 retval = &uap->lmsg.u.ms_result;
559 SCARG(&fa, fd) = SCARG(uap, fd);
560 SCARG(&fa, cmd) = svr4_to_bsd_cmd(SCARG(uap, cmd));
562 switch (SCARG(&fa, cmd)) {
566 SCARG(&fa, arg) = (long) SCARG(uap, arg);
567 fa.lmsg.u.ms_result = 0;
569 *retval = fa.lmsg.u.ms_result;
573 SCARG(&fa, arg) = (long) SCARG(uap, arg);
577 *retval = bsd_to_svr4_flags(fa.lmsg.u.ms_result);
583 * we must save the O_ASYNC flag, as that is
584 * handled by ioctl(_, I_SETSIG, _) emulation.
589 DPRINTF(("Setting flags %p\n", SCARG(uap, arg)));
590 cmd = SCARG(&fa, cmd); /* save it for a while */
592 SCARG(&fa, cmd) = F_GETFL;
593 if ((error = fcntl(&fa)) != 0)
595 flags = fa.lmsg.u.ms_result;
597 flags |= svr4_to_bsd_flags((u_long) SCARG(uap, arg));
598 SCARG(&fa, cmd) = cmd;
599 SCARG(&fa, arg) = (long) flags;
601 *retval = fa.lmsg.u.ms_result;
609 struct svr4_flock ifl;
610 struct flock *flp, fl;
611 caddr_t sg = stackgap_init();
613 flp = stackgap_alloc(&sg, sizeof(struct flock));
614 SCARG(&fa, arg) = (long) flp;
616 error = copyin(SCARG(uap, arg), &ifl, sizeof ifl);
620 svr4_to_bsd_flock(&ifl, &fl);
622 error = copyout(&fl, flp, sizeof fl);
626 fa.lmsg.u.ms_result = 0;
628 *retval = fa.lmsg.u.ms_result;
629 if (error || SCARG(&fa, cmd) != F_GETLK)
632 error = copyin(flp, &fl, sizeof fl);
636 bsd_to_svr4_flock(&fl, &ifl);
638 return copyout(&ifl, SCARG(uap, arg), sizeof ifl);
641 switch (SCARG(uap, cmd)) {
646 SCARG(&du, from) = SCARG(uap, fd);
647 SCARG(&du, to) = (int)SCARG(uap, arg);
651 *retval = SCARG(&du, to);
657 struct svr4_flock ifl;
660 error = copyin(SCARG(uap, arg), &ifl,
664 svr4_to_bsd_flock(&ifl, &fl);
665 return fd_truncate(td, SCARG(uap, fd), &fl, retval);
670 case SVR4_F_SETLKW64:
672 struct svr4_flock64 ifl;
673 struct flock *flp, fl;
674 caddr_t sg = stackgap_init();
676 flp = stackgap_alloc(&sg, sizeof(struct flock));
677 SCARG(&fa, arg) = (long) flp;
679 error = copyin(SCARG(uap, arg), &ifl,
684 svr4_to_bsd_flock64(&ifl, &fl);
686 error = copyout(&fl, flp, sizeof fl);
690 fa.lmsg.u.ms_result = 0;
692 *retval = fa.lmsg.u.ms_result;
693 if (error || SCARG(&fa, cmd) != F_GETLK)
696 error = copyin(flp, &fl, sizeof fl);
700 bsd_to_svr4_flock64(&fl, &ifl);
702 return copyout(&ifl, SCARG(uap, arg),
706 case SVR4_F_FREESP64:
708 struct svr4_flock64 ifl;
711 error = copyin(SCARG(uap, arg), &ifl,
715 svr4_to_bsd_flock64(&ifl, &fl);
716 return fd_truncate(td, SCARG(uap, fd), &fl, retval);
720 return fd_revoke(td, SCARG(uap, fd));