bb65f5a1cc
Broke locking on named pipes in the same way as locking on non-vnodes (wrong errno). This will be fixed later. The fix involves negative logic. Named pipes are now distinguished from other types of files with vnodes, and there is additional code to handle vnodes and named pipes in the same way only where that makes sense (not for lseek, locking or TIOCSCTTY).
299 lines
8.3 KiB
C
299 lines
8.3 KiB
C
/*-
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* Copyright (c) 1994-1995 Søren Schmidt
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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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* in this position and unchanged.
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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 withough 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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* $Id: linux_stats.c,v 1.5 1996/03/02 19:38:00 peter Exp $
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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/dirent.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/socketvar.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <sys/pipe.h>
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#include <i386/linux/linux.h>
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#include <i386/linux/linux_proto.h>
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#include <i386/linux/linux_util.h>
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struct linux_newstat {
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unsigned short stat_dev;
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unsigned short __pad1;
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unsigned long stat_ino;
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unsigned short stat_mode;
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unsigned short stat_nlink;
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unsigned short stat_uid;
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unsigned short stat_gid;
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unsigned short stat_rdev;
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unsigned short __pad2;
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unsigned long stat_size;
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unsigned long stat_blksize;
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unsigned long stat_blocks;
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unsigned long stat_atime;
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unsigned long __unused1;
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unsigned long stat_mtime;
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unsigned long __unused2;
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unsigned long stat_ctime;
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unsigned long __unused3;
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unsigned long __unused4;
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unsigned long __unused5;
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};
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static int
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newstat_copyout(struct stat *buf, void *ubuf)
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{
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struct linux_newstat tbuf;
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tbuf.stat_dev = (buf->st_dev & 0xff) | ((buf->st_dev & 0xff00)<<10);
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tbuf.stat_ino = buf->st_ino;
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tbuf.stat_mode = buf->st_mode;
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tbuf.stat_nlink = buf->st_nlink;
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tbuf.stat_uid = buf->st_uid;
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tbuf.stat_gid = buf->st_gid;
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tbuf.stat_rdev = buf->st_rdev;
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tbuf.stat_size = buf->st_size;
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tbuf.stat_atime = buf->st_atime;
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tbuf.stat_mtime = buf->st_mtime;
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tbuf.stat_ctime = buf->st_ctime;
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tbuf.stat_blksize = buf->st_blksize;
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tbuf.stat_blocks = buf->st_blocks;
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return copyout(&tbuf, ubuf, sizeof(tbuf));
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}
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int
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linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval)
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{
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struct stat buf;
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struct nameidata nd;
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int error;
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caddr_t sg;
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sg = stackgap_init();
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CHECKALTEXIST(p, &sg, args->path);
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#ifdef DEBUG
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printf("Linux-emul(%d): newstat(%s, *)\n", p->p_pid, args->path);
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#endif
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NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p);
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error = namei(&nd);
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if (!error) {
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error = vn_stat(nd.ni_vp, &buf, p);
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vput(nd.ni_vp);
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}
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if (!error)
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error = newstat_copyout(&buf, args->buf);
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return error;
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}
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/*
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* Get file status; this version does not follow links.
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*/
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int
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linux_newlstat(p, uap, retval)
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struct proc *p;
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struct linux_newlstat_args *uap;
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int *retval;
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{
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int error;
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struct vnode *vp, *dvp;
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struct stat sb, sb1;
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struct nameidata nd;
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caddr_t sg;
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sg = stackgap_init();
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CHECKALTEXIST(p, &sg, uap->path);
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#ifdef DEBUG
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printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, uap->path);
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#endif
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NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE,
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uap->path, p);
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error = namei(&nd);
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if (error)
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return (error);
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/*
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* For symbolic links, always return the attributes of its
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* containing directory, except for mode, size, and links.
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*/
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vp = nd.ni_vp;
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dvp = nd.ni_dvp;
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if (vp->v_type != VLNK) {
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if (dvp == vp)
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vrele(dvp);
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else
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vput(dvp);
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error = vn_stat(vp, &sb, p);
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vput(vp);
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if (error)
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return (error);
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} else {
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error = vn_stat(dvp, &sb, p);
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vput(dvp);
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if (error) {
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vput(vp);
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return (error);
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}
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error = vn_stat(vp, &sb1, p);
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vput(vp);
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if (error)
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return (error);
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sb.st_mode &= ~S_IFDIR;
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sb.st_mode |= S_IFLNK;
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sb.st_nlink = sb1.st_nlink;
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sb.st_size = sb1.st_size;
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sb.st_blocks = sb1.st_blocks;
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}
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error = newstat_copyout(&sb, uap->buf);
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return (error);
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}
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int
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linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval)
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{
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struct filedesc *fdp = p->p_fd;
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struct file *fp;
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struct stat buf;
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int error;
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#ifdef DEBUG
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printf("Linux-emul(%d): newfstat(%d, *)\n", p->p_pid, args->fd);
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#endif
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if ((unsigned)args->fd >= fdp->fd_nfiles
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|| (fp = fdp->fd_ofiles[args->fd]) == NULL)
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return EBADF;
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switch (fp->f_type) {
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case DTYPE_FIFO:
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case DTYPE_VNODE:
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error = vn_stat((struct vnode *)fp->f_data, &buf, p);
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break;
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case DTYPE_SOCKET:
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error = soo_stat((struct socket *)fp->f_data, &buf);
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break;
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case DTYPE_PIPE:
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error = pipe_stat((struct pipe *)fp->f_data, &buf);
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break;
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default:
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panic("LINUX newfstat");
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}
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if (!error)
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error = newstat_copyout(&buf, args->buf);
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return error;
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}
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struct linux_statfs_buf {
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long ftype;
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long fbsize;
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long fblocks;
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long fbfree;
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long fbavail;
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long ffiles;
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long fffree;
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linux_fsid_t ffsid;
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long fnamelen;
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long fspare[6];
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};
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int
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linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval)
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{
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struct mount *mp;
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struct nameidata *ndp;
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struct statfs *bsd_statfs;
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struct nameidata nd;
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struct linux_statfs_buf linux_statfs_buf;
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int error;
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caddr_t sg;
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sg = stackgap_init();
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CHECKALTEXIST(p, &sg, args->path);
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#ifdef DEBUG
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printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path);
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#endif
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ndp = &nd;
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NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc);
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if (error = namei(ndp))
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return error;
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mp = ndp->ni_vp->v_mount;
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bsd_statfs = &mp->mnt_stat;
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vrele(ndp->ni_vp);
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if (error = VFS_STATFS(mp, bsd_statfs, p))
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return error;
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bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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linux_statfs_buf.ftype = bsd_statfs->f_type;
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linux_statfs_buf.fbsize = bsd_statfs->f_bsize;
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linux_statfs_buf.fblocks = bsd_statfs->f_blocks;
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linux_statfs_buf.fbfree = bsd_statfs->f_bfree;
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linux_statfs_buf.fbavail = bsd_statfs->f_bavail;
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linux_statfs_buf.fffree = bsd_statfs->f_ffree;
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linux_statfs_buf.ffiles = bsd_statfs->f_files;
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linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
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linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
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linux_statfs_buf.fnamelen = MAXNAMLEN;
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return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf,
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sizeof(struct linux_statfs_buf));
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}
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int
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linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval)
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{
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struct file *fp;
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struct mount *mp;
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struct statfs *bsd_statfs;
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struct linux_statfs_buf linux_statfs_buf;
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int error;
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#ifdef DEBUG
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printf("Linux-emul(%d): fstatfs(%d, *)\n", p->p_pid, args->fd);
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#endif
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if (error = getvnode(p->p_fd, args->fd, &fp))
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return error;
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mp = ((struct vnode *)fp->f_data)->v_mount;
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bsd_statfs = &mp->mnt_stat;
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if (error = VFS_STATFS(mp, bsd_statfs, p))
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return error;
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bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
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linux_statfs_buf.ftype = bsd_statfs->f_type;
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linux_statfs_buf.fbsize = bsd_statfs->f_bsize;
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linux_statfs_buf.fblocks = bsd_statfs->f_blocks;
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linux_statfs_buf.fbfree = bsd_statfs->f_bfree;
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linux_statfs_buf.fbavail = bsd_statfs->f_bavail;
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linux_statfs_buf.fffree = bsd_statfs->f_ffree;
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linux_statfs_buf.ffiles = bsd_statfs->f_files;
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linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0];
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linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1];
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linux_statfs_buf.fnamelen = MAXNAMLEN;
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return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf,
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sizeof(struct linux_statfs_buf));
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}
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