db06a930e6
from on. The NDINIT() macro no longer takes the lwp parameter and associates the credentials of the calling thread with the namei structure.
319 lines
8.9 KiB
C
319 lines
8.9 KiB
C
/* $NetBSD: ibcs2_fcntl.c,v 1.32 2007/12/08 19:29:38 pooka Exp $ */
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/*
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* Copyright (c) 1995 Scott Bartram
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ibcs2_fcntl.c,v 1.32 2007/12/08 19:29:38 pooka Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/syscallargs.h>
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#include <sys/vnode.h>
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#include <sys/kauth.h>
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#include <compat/ibcs2/ibcs2_types.h>
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#include <compat/ibcs2/ibcs2_fcntl.h>
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#include <compat/ibcs2/ibcs2_unistd.h>
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#include <compat/ibcs2/ibcs2_signal.h>
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#include <compat/ibcs2/ibcs2_syscallargs.h>
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#include <compat/ibcs2/ibcs2_util.h>
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static int cvt_o_flags(int);
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static void cvt_flock2iflock(struct flock *, struct ibcs2_flock *);
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static void cvt_iflock2flock(struct ibcs2_flock *, struct flock *);
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static int ioflags2oflags(int);
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static int oflags2ioflags(int);
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static int
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cvt_o_flags(int flags)
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{
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int r = 0;
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/* convert mode into NetBSD mode */
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if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
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if (flags & IBCS2_O_RDWR) r |= O_RDWR;
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if (flags & (IBCS2_O_NDELAY | IBCS2_O_NONBLOCK)) r |= O_NONBLOCK;
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if (flags & IBCS2_O_APPEND) r |= O_APPEND;
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if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
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if (flags & IBCS2_O_CREAT) r |= O_CREAT;
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if (flags & IBCS2_O_TRUNC) r |= O_TRUNC;
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if (flags & IBCS2_O_EXCL) r |= O_EXCL;
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return r;
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}
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static void
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cvt_flock2iflock(struct flock *flp, struct ibcs2_flock *iflp)
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{
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switch (flp->l_type) {
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case F_RDLCK:
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iflp->l_type = IBCS2_F_RDLCK;
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break;
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case F_WRLCK:
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iflp->l_type = IBCS2_F_WRLCK;
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break;
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case F_UNLCK:
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iflp->l_type = IBCS2_F_UNLCK;
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break;
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}
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iflp->l_whence = (short)flp->l_whence;
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iflp->l_start = (ibcs2_off_t)flp->l_start;
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iflp->l_len = (ibcs2_off_t)flp->l_len;
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iflp->l_sysid = 0;
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iflp->l_pid = (ibcs2_pid_t)flp->l_pid;
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}
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static void
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cvt_iflock2flock(struct ibcs2_flock *iflp, struct flock *flp)
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{
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flp->l_start = (off_t)iflp->l_start;
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flp->l_len = (off_t)iflp->l_len;
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flp->l_pid = (pid_t)iflp->l_pid;
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switch (iflp->l_type) {
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case IBCS2_F_RDLCK:
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flp->l_type = F_RDLCK;
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break;
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case IBCS2_F_WRLCK:
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flp->l_type = F_WRLCK;
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break;
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case IBCS2_F_UNLCK:
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flp->l_type = F_UNLCK;
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break;
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}
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flp->l_whence = iflp->l_whence;
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}
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/* convert iBCS2 mode into NetBSD mode */
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static int
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ioflags2oflags(int flags)
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{
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int r = 0;
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if (flags & IBCS2_O_RDONLY) r |= O_RDONLY;
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if (flags & IBCS2_O_WRONLY) r |= O_WRONLY;
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if (flags & IBCS2_O_RDWR) r |= O_RDWR;
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if (flags & IBCS2_O_NDELAY) r |= O_NONBLOCK;
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if (flags & IBCS2_O_APPEND) r |= O_APPEND;
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if (flags & IBCS2_O_SYNC) r |= O_FSYNC;
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if (flags & IBCS2_O_NONBLOCK) r |= O_NONBLOCK;
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if (flags & IBCS2_O_CREAT) r |= O_CREAT;
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if (flags & IBCS2_O_TRUNC) r |= O_TRUNC;
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if (flags & IBCS2_O_EXCL) r |= O_EXCL;
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if (flags & IBCS2_O_NOCTTY) r |= O_NOCTTY;
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return r;
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}
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/* convert NetBSD mode into iBCS2 mode */
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static int
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oflags2ioflags(int flags)
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{
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int r = 0;
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if (flags & O_RDONLY) r |= IBCS2_O_RDONLY;
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if (flags & O_WRONLY) r |= IBCS2_O_WRONLY;
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if (flags & O_RDWR) r |= IBCS2_O_RDWR;
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if (flags & O_NDELAY) r |= IBCS2_O_NONBLOCK;
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if (flags & O_APPEND) r |= IBCS2_O_APPEND;
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if (flags & O_FSYNC) r |= IBCS2_O_SYNC;
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if (flags & O_NONBLOCK) r |= IBCS2_O_NONBLOCK;
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if (flags & O_CREAT) r |= IBCS2_O_CREAT;
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if (flags & O_TRUNC) r |= IBCS2_O_TRUNC;
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if (flags & O_EXCL) r |= IBCS2_O_EXCL;
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if (flags & O_NOCTTY) r |= IBCS2_O_NOCTTY;
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return r;
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}
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int
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ibcs2_sys_open(struct lwp *l, void *v, register_t *retval)
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{
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struct ibcs2_sys_open_args /* {
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syscallarg(char *) path;
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syscallarg(int) flags;
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syscallarg(int) mode;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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int noctty = SCARG(uap, flags) & IBCS2_O_NOCTTY;
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int ret;
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SCARG(uap, flags) = cvt_o_flags(SCARG(uap, flags));
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ret = sys_open(l, uap, retval);
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if (!ret && !noctty && SESS_LEADER(p) && !(p->p_lflag & PL_CONTROLT)) {
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struct filedesc *fdp = p->p_fd;
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struct file *fp;
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if ((fp = fd_getfile(fdp, *retval)) != NULL) {
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FILE_USE(fp);
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/* ignore any error, just give it a try */
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if (fp->f_type == DTYPE_VNODE)
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(fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, NULL, l);
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FILE_UNUSE(fp, l);
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}
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}
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return ret;
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}
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int
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ibcs2_sys_creat(struct lwp *l, void *v, register_t *retval)
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{
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struct ibcs2_sys_creat_args /* {
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syscallarg(char *) path;
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syscallarg(int) mode;
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} */ *uap = v;
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struct sys_open_args cup;
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SCARG(&cup, path) = SCARG(uap, path);
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SCARG(&cup, mode) = SCARG(uap, mode);
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SCARG(&cup, flags) = O_WRONLY | O_CREAT | O_TRUNC;
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return sys_open(l, &cup, retval);
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}
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int
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ibcs2_sys_access(struct lwp *l, void *v, register_t *retval)
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{
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struct ibcs2_sys_access_args /* {
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syscallarg(char *) path;
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syscallarg(int) flags;
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} */ *uap = v;
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struct sys_access_args cup;
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SCARG(&cup, path) = SCARG(uap, path);
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SCARG(&cup, flags) = SCARG(uap, flags);
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return sys_access(l, &cup, retval);
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}
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int
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ibcs2_sys_eaccess(struct lwp *l, void *v, register_t *retval)
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{
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struct ibcs2_sys_eaccess_args /* {
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syscallarg(char *) path;
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syscallarg(int) flags;
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} */ *uap = v;
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struct vnode *vp;
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int error, flags;
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struct nameidata nd;
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NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | TRYEMULROOT, UIO_USERSPACE,
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SCARG(uap, path));
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if ((error = namei(&nd)) != 0)
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return error;
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vp = nd.ni_vp;
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/* Flags == 0 means only check for existence. */
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if (SCARG(uap, flags)) {
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flags = 0;
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if (SCARG(uap, flags) & IBCS2_R_OK)
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flags |= VREAD;
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if (SCARG(uap, flags) & IBCS2_W_OK)
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flags |= VWRITE;
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if (SCARG(uap, flags) & IBCS2_X_OK)
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flags |= VEXEC;
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if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0)
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error = VOP_ACCESS(vp, flags, l->l_cred);
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}
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vput(vp);
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return error;
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}
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int
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ibcs2_sys_fcntl(struct lwp *l, void *v, register_t *retval)
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{
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struct ibcs2_sys_fcntl_args /* {
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syscallarg(int) fd;
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syscallarg(int) cmd;
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syscallarg(char *) arg;
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} */ *uap = v;
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struct sys_fcntl_args fa;
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struct flock fl;
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struct ibcs2_flock ifl;
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int error;
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int cmd;
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switch(SCARG(uap, cmd)) {
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case IBCS2_F_DUPFD:
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SCARG(&fa, fd) = SCARG(uap, fd);
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SCARG(&fa, cmd) = F_DUPFD;
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SCARG(&fa, arg) = SCARG(uap, arg);
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return sys_fcntl(l, &fa, retval);
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case IBCS2_F_GETFD:
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SCARG(&fa, fd) = SCARG(uap, fd);
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SCARG(&fa, cmd) = F_GETFD;
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SCARG(&fa, arg) = SCARG(uap, arg);
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return sys_fcntl(l, &fa, retval);
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case IBCS2_F_SETFD:
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SCARG(&fa, fd) = SCARG(uap, fd);
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SCARG(&fa, cmd) = F_SETFD;
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SCARG(&fa, arg) = SCARG(uap, arg);
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return sys_fcntl(l, &fa, retval);
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case IBCS2_F_GETFL:
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SCARG(&fa, fd) = SCARG(uap, fd);
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SCARG(&fa, cmd) = F_GETFL;
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SCARG(&fa, arg) = SCARG(uap, arg);
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error = sys_fcntl(l, &fa, retval);
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if (error)
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return error;
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*retval = oflags2ioflags(*retval);
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return error;
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case IBCS2_F_SETFL:
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SCARG(&fa, fd) = SCARG(uap, fd);
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SCARG(&fa, cmd) = F_SETFL;
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SCARG(&fa, arg) = (void *)ioflags2oflags((int) SCARG(uap, arg));
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return sys_fcntl(l, &fa, retval);
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case IBCS2_F_GETLK:
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cmd = F_GETLK;
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goto lock;
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case IBCS2_F_SETLK:
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cmd = F_SETLK;
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goto lock;
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case IBCS2_F_SETLKW:
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cmd = F_SETLKW;
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lock:
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error = copyin(SCARG(uap, arg), &ifl, ibcs2_flock_len);
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if (error)
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return error;
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cvt_iflock2flock(&ifl, &fl);
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error = do_fcntl_lock(l, SCARG(uap, fd), cmd, &fl);
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if (cmd != F_GETLK || error != 0)
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return error;
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cvt_flock2iflock(&fl, &ifl);
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return copyout(&ifl, SCARG(uap, arg), ibcs2_flock_len);
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default:
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return ENOSYS;
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}
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}
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