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 1.14 2003/08/27 06:07:10 rob 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>
51 #include "svr4_types.h"
52 #include "svr4_signal.h"
53 #include "svr4_proto.h"
54 #include "svr4_util.h"
55 #include "svr4_fcntl.h"
57 static int svr4_to_bsd_flags (int);
58 static u_long svr4_to_bsd_cmd (u_long);
59 static int fd_revoke (struct thread *, int);
60 static int fd_truncate (struct thread *, int, struct flock *, int *);
61 static int bsd_to_svr4_flags (int);
62 static void bsd_to_svr4_flock (struct flock *, struct svr4_flock *);
63 static void svr4_to_bsd_flock (struct svr4_flock *, struct flock *);
64 static void bsd_to_svr4_flock64 (struct flock *, struct svr4_flock64 *);
65 static void svr4_to_bsd_flock64 (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.sysmsg_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.sysmsg_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->sysmsg_result = cup.sysmsg_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.sysmsg_result = 0;
406 uap->sysmsg_result = cup.sysmsg_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 access_args cup;
442 caddr_t sg = stackgap_init();
443 CHECKALTEXIST(&sg, SCARG(uap, path));
445 SCARG(&cup, path) = SCARG(uap, path);
446 SCARG(&cup, flags) = SCARG(uap, flags);
447 cup.sysmsg_result = 0;
448 error = access(&cup);
449 uap->sysmsg_result = cup.sysmsg_result;
455 svr4_sys_pread(struct svr4_sys_pread_args *uap)
457 struct pread_args pra;
461 * Just translate the args structure and call the NetBSD
462 * pread(2) system call (offset type is 64-bit in NetBSD).
464 SCARG(&pra, fd) = SCARG(uap, fd);
465 SCARG(&pra, buf) = SCARG(uap, buf);
466 SCARG(&pra, nbyte) = SCARG(uap, nbyte);
467 SCARG(&pra, offset) = SCARG(uap, off);
469 pra.sysmsg_result = 0;
471 uap->sysmsg_result = pra.sysmsg_result;
478 svr4_sys_pread64(struct thread *td, void *v, register_t *retval)
480 struct svr4_sys_pread64_args *uap = v;
481 struct sys_pread_args pra;
485 * Just translate the args structure and call the NetBSD
486 * pread(2) system call (offset type is 64-bit in NetBSD).
488 SCARG(&pra, fd) = SCARG(uap, fd);
489 SCARG(&pra, buf) = SCARG(uap, buf);
490 SCARG(&pra, nbyte) = SCARG(uap, nbyte);
491 SCARG(&pra, offset) = SCARG(uap, off);
493 pra.sysmsg_result = 0;
494 error = sys_pread(&pra, retval);
495 uap->sysmsg_result = pra.sysmsg_result;
502 svr4_sys_pwrite(struct svr4_sys_pwrite_args *uap)
504 struct pwrite_args pwa;
508 * Just translate the args structure and call the NetBSD
509 * pwrite(2) system call (offset type is 64-bit in NetBSD).
511 SCARG(&pwa, fd) = SCARG(uap, fd);
512 SCARG(&pwa, buf) = SCARG(uap, buf);
513 SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
514 SCARG(&pwa, offset) = SCARG(uap, off);
516 pwa.sysmsg_result = 0;
517 error = pwrite(&pwa);
518 uap->sysmsg_result = pwa.sysmsg_result;
525 svr4_sys_pwrite64(struct thread *td, void *v, register_t *retval)
527 struct svr4_sys_pwrite64_args *uap = v;
528 struct sys_pwrite_args pwa;
531 * Just translate the args structure and call the NetBSD
532 * pwrite(2) system call (offset type is 64-bit in NetBSD).
534 SCARG(&pwa, fd) = SCARG(uap, fd);
535 SCARG(&pwa, buf) = SCARG(uap, buf);
536 SCARG(&pwa, nbyte) = SCARG(uap, nbyte);
537 SCARG(&pwa, offset) = SCARG(uap, off);
539 return (sys_pwrite(p, &pwa, retval));
544 svr4_sys_fcntl(struct svr4_sys_fcntl_args *uap)
546 struct thread *td = curthread; /* XXX */
548 struct fcntl_args fa;
551 retval = &uap->sysmsg_result;
553 SCARG(&fa, fd) = SCARG(uap, fd);
554 SCARG(&fa, cmd) = svr4_to_bsd_cmd(SCARG(uap, cmd));
556 switch (SCARG(&fa, cmd)) {
560 SCARG(&fa, arg) = (long) SCARG(uap, arg);
561 fa.sysmsg_result = 0;
563 *retval = fa.sysmsg_result;
567 SCARG(&fa, arg) = (long) SCARG(uap, arg);
571 *retval = bsd_to_svr4_flags(fa.sysmsg_result);
577 * we must save the O_ASYNC flag, as that is
578 * handled by ioctl(_, I_SETSIG, _) emulation.
583 DPRINTF(("Setting flags %p\n", SCARG(uap, arg)));
584 cmd = SCARG(&fa, cmd); /* save it for a while */
586 SCARG(&fa, cmd) = F_GETFL;
587 if ((error = fcntl(&fa)) != 0)
589 flags = fa.sysmsg_result;
591 flags |= svr4_to_bsd_flags((u_long) SCARG(uap, arg));
592 SCARG(&fa, cmd) = cmd;
593 SCARG(&fa, arg) = (long) flags;
595 *retval = fa.sysmsg_result;
603 struct svr4_flock ifl;
604 struct flock *flp, fl;
605 caddr_t sg = stackgap_init();
607 flp = stackgap_alloc(&sg, sizeof(struct flock));
608 SCARG(&fa, arg) = (long) flp;
610 error = copyin(SCARG(uap, arg), &ifl, sizeof ifl);
614 svr4_to_bsd_flock(&ifl, &fl);
616 error = copyout(&fl, flp, sizeof fl);
620 fa.sysmsg_result = 0;
622 *retval = fa.sysmsg_result;
623 if (error || SCARG(&fa, cmd) != F_GETLK)
626 error = copyin(flp, &fl, sizeof fl);
630 bsd_to_svr4_flock(&fl, &ifl);
632 return copyout(&ifl, SCARG(uap, arg), sizeof ifl);
635 switch (SCARG(uap, cmd)) {
640 SCARG(&du, from) = SCARG(uap, fd);
641 SCARG(&du, to) = (int)SCARG(uap, arg);
645 *retval = SCARG(&du, to);
651 struct svr4_flock ifl;
654 error = copyin(SCARG(uap, arg), &ifl,
658 svr4_to_bsd_flock(&ifl, &fl);
659 return fd_truncate(td, SCARG(uap, fd), &fl, retval);
664 case SVR4_F_SETLKW64:
666 struct svr4_flock64 ifl;
667 struct flock *flp, fl;
668 caddr_t sg = stackgap_init();
670 flp = stackgap_alloc(&sg, sizeof(struct flock));
671 SCARG(&fa, arg) = (long) flp;
673 error = copyin(SCARG(uap, arg), &ifl,
678 svr4_to_bsd_flock64(&ifl, &fl);
680 error = copyout(&fl, flp, sizeof fl);
684 fa.sysmsg_result = 0;
686 *retval = fa.sysmsg_result;
687 if (error || SCARG(&fa, cmd) != F_GETLK)
690 error = copyin(flp, &fl, sizeof fl);
694 bsd_to_svr4_flock64(&fl, &ifl);
696 return copyout(&ifl, SCARG(uap, arg),
700 case SVR4_F_FREESP64:
702 struct svr4_flock64 ifl;
705 error = copyin(SCARG(uap, arg), &ifl,
709 svr4_to_bsd_flock64(&ifl, &fl);
710 return fd_truncate(td, SCARG(uap, fd), &fl, retval);
714 return fd_revoke(td, SCARG(uap, fd));