b72f41635e
Mostly adding explicit != comparison to "if (error = copyin/out( ... ))". Fix comment glitch in ultrix_fs.c
306 lines
8.6 KiB
C
306 lines
8.6 KiB
C
/* $NetBSD: ultrix_pathname.c,v 1.2 1996/04/07 17:23:07 jonathan Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* @(#)sun_misc.c 8.1 (Berkeley) 6/18/93
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*
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* from: Header: sun_misc.c,v 1.16 93/04/07 02:46:27 torek Exp
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*/
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/*
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* Ultrix emulation filesystem-namespace compatibility module.
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*
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* Ultrix system calls that examine the filesysten namespace
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* are implemented here. Each system call has a wrapper that
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* first checks if the given file exists at a special `emulation'
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* pathname: the given path, prefixex with '/emul/ultrix', and
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* if that pathname exists, it is used instead of the providd pathname.
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*
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* Used to locate OS-specific files (shared libraries, config files,
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* etc) used by emul processes at their `normal' pathnames, without
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* polluting, or conflicting with, the native filesysten namespace.
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*/
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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/file.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <sys/syscallargs.h>
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#include <compat/ultrix/ultrix_syscallargs.h>
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#include <compat/ultrix/ultrix_util.h>
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const char ultrix_emul_path[] = "/emul/ultrix";
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int
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ultrix_sys_creat(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_creat_args *uap = v;
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struct sys_open_args ouap;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ouap, path) = SCARG(uap, path);
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SCARG(&ouap, flags) = O_WRONLY | O_CREAT | O_TRUNC;
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SCARG(&ouap, mode) = SCARG(uap, mode);
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return (sys_open(p, &ouap, retval));
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}
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int
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ultrix_sys_access(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_access_args *uap = v;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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return (sys_access(p, uap, retval));
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}
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int
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ultrix_sys_stat(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_stat_args *uap = v;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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return (compat_43_sys_stat(p, uap, retval));
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}
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int
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ultrix_sys_lstat(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_lstat_args *uap = v;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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return (compat_43_sys_lstat(p, uap, retval));
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}
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int
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ultrix_sys_execv(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_execv_args *uap = v;
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struct sys_execve_args ouap;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ouap, path) = SCARG(uap, path);
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SCARG(&ouap, argp) = SCARG(uap, argp);
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SCARG(&ouap, envp) = NULL;
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return (sys_execve(p, &ouap, retval));
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}
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int
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ultrix_sys_open(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_open_args *uap = v;
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int l, r;
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int noctty;
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int ret;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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/* convert open flags into NetBSD flags */
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l = SCARG(uap, flags);
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noctty = l & 0x8000;
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r = (l & (0x0001 | 0x0002 | 0x0008 | 0x0040 | 0x0200 | 0x0400 | 0x0800));
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r |= ((l & (0x0004 | 0x1000 | 0x4000)) ? O_NONBLOCK : 0);
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r |= ((l & 0x0080) ? O_SHLOCK : 0);
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r |= ((l & 0x0100) ? O_EXLOCK : 0);
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r |= ((l & 0x2000) ? O_FSYNC : 0);
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SCARG(uap, flags) = r;
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ret = sys_open(p, (struct sys_open_args *)uap, retval);
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if (!ret && !noctty && SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
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struct filedesc *fdp = p->p_fd;
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struct file *fp = fdp->fd_ofiles[*retval];
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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, (caddr_t)0, p);
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}
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return ret;
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}
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struct ultrix_statfs {
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long f_type; /* type of info, zero for now */
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long f_bsize; /* fundamental file system block size */
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long f_blocks; /* total blocks in file system */
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long f_bfree; /* free blocks */
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long f_bavail; /* free blocks available to non-super-user */
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long f_files; /* total file nodes in file system */
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long f_ffree; /* free file nodes in fs */
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fsid_t f_fsid; /* file system id */
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long f_spare[7]; /* spare for later */
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};
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/*
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* Custruct ultrix statfs result from native.
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* XXX should this be the same as returned by Ultrix getmnt(2)?
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* XXX Ultrix predates DEV_BSIZE. Is conversion of disk space from 1k
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* block units to DEV_BSIZE necessary?
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*/
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static int
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ultrixstatfs(sp, buf)
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struct statfs *sp;
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caddr_t buf;
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{
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struct ultrix_statfs ssfs;
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bzero(&ssfs, sizeof ssfs);
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ssfs.f_type = 0;
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ssfs.f_bsize = sp->f_bsize;
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ssfs.f_blocks = sp->f_blocks;
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ssfs.f_bfree = sp->f_bfree;
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ssfs.f_bavail = sp->f_bavail;
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ssfs.f_files = sp->f_files;
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ssfs.f_ffree = sp->f_ffree;
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ssfs.f_fsid = sp->f_fsid;
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return copyout((caddr_t)&ssfs, buf, sizeof ssfs);
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}
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int
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ultrix_sys_statfs(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_statfs_args *uap = v;
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register struct mount *mp;
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register struct statfs *sp;
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int error;
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struct nameidata nd;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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mp = nd.ni_vp->v_mount;
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sp = &mp->mnt_stat;
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vrele(nd.ni_vp);
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if ((error = VFS_STATFS(mp, sp, p)) != 0)
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return (error);
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sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf));
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}
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/*
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* sys_fstatfs() takes an fd, not a path, and so needs no emul
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* pathname processing; but it's similar enough to sys_statfs() that
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* it goes here anyway.
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*/
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int
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ultrix_sys_fstatfs(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_fstatfs_args *uap = v;
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struct file *fp;
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struct mount *mp;
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register struct statfs *sp;
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int error;
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if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
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return (error);
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mp = ((struct vnode *)fp->f_data)->v_mount;
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sp = &mp->mnt_stat;
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if ((error = VFS_STATFS(mp, sp, p)) != 0)
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return (error);
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sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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return ultrixstatfs(sp, (caddr_t)SCARG(uap, buf));
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}
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int
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ultrix_sys_mknod(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct ultrix_sys_mknod_args *uap = v;
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caddr_t sg = stackgap_init(p->p_emul);
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ULTRIX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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if (S_ISFIFO(SCARG(uap, mode)))
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return sys_mkfifo(p, uap, retval);
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return sys_mknod(p, (struct sys_mknod_args *)uap, retval);
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}
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