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379 lines
9.6 KiB
C
379 lines
9.6 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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/conf.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/stat.h>
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#include <sys/systm.h>
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#include <sys/vnode.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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u_short stat_dev;
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u_short __pad1;
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u_long stat_ino;
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u_short stat_mode;
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u_short stat_nlink;
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u_short stat_uid;
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u_short stat_gid;
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u_short stat_rdev;
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u_short __pad2;
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u_long stat_size;
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u_long stat_blksize;
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u_long stat_blocks;
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u_long stat_atime;
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u_long __unused1;
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u_long stat_mtime;
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u_long __unused2;
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u_long stat_ctime;
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u_long __unused3;
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u_long __unused4;
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u_long __unused5;
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};
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struct linux_ustat
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{
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int f_tfree;
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u_long f_tinode;
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char f_fname[6];
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char f_fpack[6];
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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 = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
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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)
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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(%ld): newstat(%s, *)\n", (long)p->p_pid,
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args->path);
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#endif
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NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
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args->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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NDFREE(&nd, NDF_ONLY_PNBUF);
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error = vn_stat(nd.ni_vp, &buf, p);
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vput(nd.ni_vp);
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if (error)
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return (error);
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return (newstat_copyout(&buf, args->buf));
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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)
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struct proc *p;
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struct linux_newlstat_args *uap;
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{
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int error;
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struct vnode *vp;
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struct stat sb;
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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(%ld): newlstat(%s, *)\n", (long)p->p_pid,
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uap->path);
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#endif
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NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, 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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NDFREE(&nd, NDF_ONLY_PNBUF);
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vp = nd.ni_vp;
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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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return (newstat_copyout(&sb, uap->buf));
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}
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int
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linux_newfstat(struct proc *p, struct linux_newfstat_args *args)
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{
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struct filedesc *fdp;
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struct file *fp;
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struct stat buf;
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int error;
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fdp = p->p_fd;
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#ifdef DEBUG
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printf("Linux-emul(%ld): newfstat(%d, *)\n", (long)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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error = fo_stat(fp, &buf, p);
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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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#ifndef VT_NWFS
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#define VT_NWFS VT_TFS /* XXX - bug compatibility with sys/nwfs/nwfs_node.h */
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#endif
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#define LINUX_CODA_SUPER_MAGIC 0x73757245L
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#define LINUX_EXT2_SUPER_MAGIC 0xEF53L
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#define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
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#define LINUX_ISOFS_SUPER_MAGIC 0x9660L
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#define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
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#define LINUX_NCP_SUPER_MAGIC 0x564cL
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#define LINUX_NFS_SUPER_MAGIC 0x6969L
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#define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
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#define LINUX_PROC_SUPER_MAGIC 0x9fa0L
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#define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
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/*
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* ext2fs uses the VT_UFS tag. A mounted ext2 filesystem will therefore
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* be seen as an ufs/mfs filesystem.
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*/
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static long
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bsd_to_linux_ftype(int tag)
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{
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switch (tag) {
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case VT_CODA:
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return (LINUX_CODA_SUPER_MAGIC);
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case VT_HPFS:
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return (LINUX_HPFS_SUPER_MAGIC);
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case VT_ISOFS:
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return (LINUX_ISOFS_SUPER_MAGIC);
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case VT_MFS:
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return (LINUX_UFS_SUPER_MAGIC);
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case VT_MSDOSFS:
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return (LINUX_MSDOS_SUPER_MAGIC);
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case VT_NFS:
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return (LINUX_NFS_SUPER_MAGIC);
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case VT_NTFS:
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return (LINUX_NTFS_SUPER_MAGIC);
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case VT_NWFS:
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return (LINUX_NCP_SUPER_MAGIC);
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case VT_PROCFS:
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return (LINUX_PROC_SUPER_MAGIC);
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case VT_UFS:
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return (LINUX_UFS_SUPER_MAGIC);
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}
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return (0L);
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}
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int
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linux_statfs(struct proc *p, struct linux_statfs_args *args)
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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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error = namei(ndp);
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if (error)
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return error;
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NDFREE(ndp, NDF_ONLY_PNBUF);
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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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error = VFS_STATFS(mp, bsd_statfs, p);
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if (error)
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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_to_linux_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)
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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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error = getvnode(p->p_fd, args->fd, &fp);
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if (error)
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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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error = VFS_STATFS(mp, bsd_statfs, p);
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if (error)
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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_to_linux_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_ustat(p, uap)
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struct proc *p;
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struct linux_ustat_args *uap;
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{
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struct linux_ustat lu;
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dev_t dev;
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struct vnode *vp;
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struct statfs *stat;
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int error;
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#ifdef DEBUG
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printf("Linux-emul(%ld): ustat(%d, *)\n", (long)p->p_pid, uap->dev);
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#endif
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/*
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* lu.f_fname and lu.f_fpack are not used. They are always zeroed.
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* lu.f_tinode and lu.f_tfree are set from the device's super block.
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*/
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bzero(&lu, sizeof(lu));
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/*
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* XXX - Don't return an error if we can't find a vnode for the
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* device. Our dev_t is 32-bits whereas Linux only has a 16-bits
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* dev_t. The dev_t that is used now may as well be a truncated
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* dev_t returned from previous syscalls. Just return a bzeroed
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* ustat in that case.
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*/
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dev = makebdev(uap->dev >> 8, uap->dev & 0xFF);
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if (vfinddev(dev, VBLK, &vp)) {
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if (vp->v_mount == NULL)
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return (EINVAL);
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stat = &(vp->v_mount->mnt_stat);
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error = VFS_STATFS(vp->v_mount, stat, p);
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if (error)
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return (error);
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lu.f_tfree = stat->f_bfree;
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lu.f_tinode = stat->f_ffree;
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}
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return (copyout(&lu, uap->ubuf, sizeof(lu)));
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}
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