byebye

1 files changed, 0 insertions, 542 deletions

diff --git a/sys/compat/linux/linux_getcwd.c b/sys/compat/linux/linux_getcwd.c
deleted file mode 100644
index 680e94ec91e..00000000000
--- a/sys/compat/linux/linux_getcwd.c
+++ /dev/null
@@ -1,542 +0,0 @@
-/* $OpenBSD: linux_getcwd.c,v 1.8 2006/04/28 08:34:32 pedro Exp $ */
-/* $NetBSD: vfs_getcwd.c,v 1.3.2.3 1999/07/11 10:24:09 sommerfeld Exp $ */
-
-/*-
- * Copyright (c) 1999 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Bill Sommerfeld.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *        This product includes software developed by the NetBSD
- *        Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- *    contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/namei.h>
-#include <sys/filedesc.h>
-#include <sys/kernel.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/vnode.h>
-#include <sys/mount.h>
-#include <sys/proc.h>
-#include <sys/uio.h>
-#include <sys/malloc.h>
-#include <sys/dirent.h>
-#include <ufs/ufs/dir.h>	/* XXX only for DIRBLKSIZ */
-
-#include <sys/syscallargs.h>
-
-#include <compat/linux/linux_types.h>
-#include <compat/linux/linux_signal.h>
-#include <compat/linux/linux_syscallargs.h>
-#include <compat/linux/linux_util.h>
-#include <compat/linux/linux_dirent.h>
-
-#include <machine/linux_machdep.h>
-
-static int
-linux_getcwd_scandir(struct vnode **, struct vnode **,
-    char **, char *, struct proc *);
-static int
-linux_getcwd_getcache(struct vnode **, struct vnode **,
-    char **, char *);
-static int
-linux_getcwd_common(struct vnode *, struct vnode *,
-		   char **, char *, int, int, struct proc *);
-
-#define DIRENT_MINSIZE (sizeof(struct dirent) - (LINUX_MAXNAMLEN+1) + 4)
-
-/*
- * Vnode variable naming conventions in this file:
- *
- * rvp: the current root we're aiming towards.
- * lvp, *lvpp: the "lower" vnode
- * uvp, *uvpp: the "upper" vnode.
- *
- * Since all the vnodes we're dealing with are directories, and the
- * lookups are going *up* in the filesystem rather than *down*, the
- * usual "pvp" (parent) or "dvp" (directory) naming conventions are
- * too confusing.
- */
-
-/*
- * XXX Will infinite loop in certain cases if a directory read reliably
- *	returns EINVAL on last block.
- * XXX is EINVAL the right thing to return if a directory is malformed?
- */
-
-/*
- * XXX Untested vs. mount -o union; probably does the wrong thing.
- */
-
-/*
- * Find parent vnode of *lvpp, return in *uvpp
- *
- * If we care about the name, scan it looking for name of directory
- * entry pointing at lvp.
- *
- * Place the name in the buffer which starts at bufp, immediately
- * before *bpp, and move bpp backwards to point at the start of it.
- *
- * On entry, *lvpp is a locked vnode reference; on exit, it is vput and NULL'ed
- * On exit, *uvpp is either NULL or is a locked vnode reference.
- */
-static int
-linux_getcwd_scandir(lvpp, uvpp, bpp, bufp, p)
-	struct vnode **lvpp;
-	struct vnode **uvpp;
-	char **bpp;
-	char *bufp;
-	struct proc *p;
-{
-	int     error = 0;
-	int     eofflag;
-	off_t   off;
-	int     tries;
-	struct uio uio;
-	struct iovec iov;
-	char   *dirbuf = NULL;
-	int	dirbuflen;
-	ino_t   fileno;
-	struct vattr va;
-	struct vnode *uvp = NULL;
-	struct vnode *lvp = *lvpp;	
-	struct componentname cn;
-	int len, reclen;
-	tries = 0;
-
-	/*
-	 * If we want the filename, get some info we need while the
-	 * current directory is still locked.
-	 */
-	if (bufp != NULL) {
-		error = VOP_GETATTR(lvp, &va, p->p_ucred, p);
-		if (error) {
-			vput(lvp);
-			*lvpp = NULL;
-			*uvpp = NULL;
-			return error;
-		}
-	}
-
-	/*
-	 * Ok, we have to do it the hard way..
-	 * Next, get parent vnode using lookup of ..
-	 */
-	cn.cn_nameiop = LOOKUP;
-	cn.cn_flags = ISLASTCN | ISDOTDOT | RDONLY;
-	cn.cn_proc = p;
-	cn.cn_cred = p->p_ucred;
-	cn.cn_pnbuf = NULL;
-	cn.cn_nameptr = "..";
-	cn.cn_namelen = 2;
-	cn.cn_hash = 0;
-	cn.cn_consume = 0;
-	
-	/*
-	 * At this point, lvp is locked and will be unlocked by the lookup.
-	 * On successful return, *uvpp will be locked
-	 */
-	error = VOP_LOOKUP(lvp, uvpp, &cn);
-	if (error) {
-		vput(lvp);
-		*lvpp = NULL;
-		*uvpp = NULL;
-		return error;
-	}
-	uvp = *uvpp;
-
-	/* If we don't care about the pathname, we're done */
-	if (bufp == NULL) {
-		vrele(lvp);
-		*lvpp = NULL;
-		return 0;
-	}
-	
-	fileno = va.va_fileid;
-
-	dirbuflen = DIRBLKSIZ;
-	if (dirbuflen < va.va_blocksize)
-		dirbuflen = va.va_blocksize;
-	dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
-
-#if 0
-unionread:
-#endif
-	off = 0;
-	do {
-		/* call VOP_READDIR of parent */
-		iov.iov_base = dirbuf;
-		iov.iov_len = dirbuflen;
-
-		uio.uio_iov = &iov;
-		uio.uio_iovcnt = 1;
-		uio.uio_offset = off;
-		uio.uio_resid = dirbuflen;
-		uio.uio_segflg = UIO_SYSSPACE;
-		uio.uio_rw = UIO_READ;
-		uio.uio_procp = p;
-
-		eofflag = 0;
-
-		error = VOP_READDIR(uvp, &uio, p->p_ucred, &eofflag, 0, 0);
-
-		off = uio.uio_offset;
-
-		/*
-		 * Try again if NFS tosses its cookies.
-		 * XXX this can still loop forever if the directory is busted
-		 * such that the second or subsequent page of it always
-		 * returns EINVAL
-		 */
-		if ((error == EINVAL) && (tries < 3)) {
-			off = 0;
-			tries++;
-			continue;	/* once more, with feeling */
-		}
-
-		if (!error) {
-			char   *cpos;
-			struct dirent *dp;
-			
-			cpos = dirbuf;
-			tries = 0;
-				
-			/* scan directory page looking for matching vnode */ 
-			for (len = (dirbuflen - uio.uio_resid); len > 0; len -= reclen) {
-				dp = (struct dirent *) cpos;
-				reclen = dp->d_reclen;
-
-				/* check for malformed directory.. */
-				if (reclen < DIRENT_MINSIZE) {
-					error = EINVAL;
-					goto out;
-				}
-				/*
-				 * XXX should perhaps do VOP_LOOKUP to
-				 * check that we got back to the right place,
-				 * but getting the locking games for that
-				 * right would be heinous.
-				 */
-				if (dp->d_fileno == fileno) {
-					char *bp = *bpp;
-					bp -= dp->d_namlen;
-					
-					if (bp <= bufp) {
-						error = ERANGE;
-						goto out;
-					}
-					bcopy(dp->d_name, bp, dp->d_namlen);
-					error = 0;
-					*bpp = bp;
-					goto out;
-				}
-				cpos += reclen;
-			}
-		}
-	} while (!eofflag);
-
-	error = ENOENT;
-		
-out:
-	vrele(lvp);
-	*lvpp = NULL;
-	free(dirbuf, M_TEMP);
-	return error;
-}
-
-/*
- * Look in the vnode-to-name reverse cache to see if
- * we can find things the easy way.
- *
- * XXX vget failure path is untested.
- *
- * On entry, *lvpp is a locked vnode reference.
- * On exit, one of the following is the case:
- *	0) Both *lvpp and *uvpp are NULL and failure is returned.
- * 	1) *uvpp is NULL, *lvpp remains locked and -1 is returned (cache miss)
- *      2) *uvpp is a locked vnode reference, *lvpp is vput and NULL'ed
- *	   and 0 is returned (cache hit)
- */
-
-static int
-linux_getcwd_getcache(lvpp, uvpp, bpp, bufp)
-	struct vnode **lvpp, **uvpp;
-	char **bpp;
-	char *bufp;
-{
-#ifdef notyet
-	struct vnode *lvp, *uvp = NULL;
-	int error;
-	int vpid;
-	
-	lvp = *lvpp;
-	
-	/*
-	 * This returns 0 on a cache hit, -1 on a clean cache miss,
-	 * or an errno on other failure.
-	 */
-	error = cache_revlookup(lvp, uvpp, bpp, bufp);
-	if (error) {
-		if (error != -1) {
-			vput(lvp);
-			*lvpp = NULL;
-			*uvpp = NULL;
-		}
-		return error;
-	}
-	uvp = *uvpp;
-	vpid = uvp->v_id;
-
-	/*
-	 * Since we're going up, we have to release the current lock
-	 * before we take the parent lock.
-	 */
-
-	VOP_UNLOCK(lvp, 0);
-
-	error = vget(uvp, LK_EXCLUSIVE | LK_RETRY);
-	if (error != 0)
-		*uvpp = NULL;
-	/*
-	 * Verify that vget succeeded, and check that vnode capability
-	 * didn't change while we were waiting for the lock.
-	 */
-	if (error || (vpid != uvp->v_id)) {
-		/*
-		 * Oops, we missed.  If the vget failed, or the
-		 * capability changed, try to get our lock back; if
-		 * that works, tell caller to try things the hard way,
-		 * otherwise give up.
-		 */
-		if (!error) vput(uvp);
-		*uvpp = NULL;
-		
-		error = vn_lock(lvp, LK_EXCLUSIVE | LK_RETRY);
-
-		if (!error)
-			return -1;
-	}
-	vrele(lvp);
-	*lvpp = NULL;
-	return error;
-#endif /* notyet */
-	return (-1);
-}
-
-/*
- * common routine shared by sys___getcwd() and linux_vn_isunder()
- */
-
-#define GETCWD_CHECK_ACCESS 0x0001
-
-static int
-linux_getcwd_common (lvp, rvp, bpp, bufp, limit, flags, p)
-	struct vnode *lvp;
-	struct vnode *rvp;
-	char **bpp;
-	char *bufp;
-	int limit;
-	int flags;
-	struct proc *p;
-{
-	struct filedesc *fdp = p->p_fd;
-	struct vnode *uvp = NULL;
-	char *bp = NULL;
-	int error;
-	int perms = VEXEC;
-
-	if (rvp == NULL) {
-		rvp = fdp->fd_rdir;
-		if (rvp == NULL)
-			rvp = rootvnode;
-	}
-	
-	VREF(rvp);
-	VREF(lvp);
-
-	/*
-	 * Error handling invariant:
-	 * Before a `goto out':
-	 *	lvp is either NULL, or locked and held.
-	 *	uvp is either NULL, or locked and held.
-	 */
-
-	error = vn_lock(lvp, LK_EXCLUSIVE | LK_RETRY, p);
-	if (error) {
-		vrele(lvp);
-		lvp = NULL;
-		goto out;
-	}
-	if (bufp)
-		bp = *bpp;
-	/*
-	 * this loop will terminate when one of the following happens:
-	 *	- we hit the root
-	 *	- getdirentries or lookup fails
-	 *	- we run out of space in the buffer.
-	 */
-	if (lvp == rvp) {
-		if (bp)
-			*(--bp) = '/';
-		goto out;
-	}
-	do {
-		if (lvp->v_type != VDIR) {
-			error = ENOTDIR;
-			goto out;
-		}
-		
-		/*
-		 * access check here is optional, depending on
-		 * whether or not caller cares.
-		 */
-		if (flags & GETCWD_CHECK_ACCESS) {
-			error = VOP_ACCESS(lvp, perms, p->p_ucred, p);
-			if (error)
-				goto out;
-			perms = VEXEC|VREAD;
-		}
-		
-		/*
-		 * step up if we're a covered vnode..
-		 */
-		while (lvp->v_flag & VROOT) {
-			struct vnode *tvp;
-
-			if (lvp == rvp)
-				goto out;
-			
-			tvp = lvp;
-			lvp = lvp->v_mount->mnt_vnodecovered;
-			vput(tvp);
-			/*
-			 * hodie natus est radici frater
-			 */
-			if (lvp == NULL) {
-				error = ENOENT;
-				goto out;
-			}
-			VREF(lvp);
-			error = vn_lock(lvp, LK_EXCLUSIVE | LK_RETRY, p);
-			if (error != 0) {
-				vrele(lvp);
-				lvp = NULL;
-				goto out;
-			}
-		}
-		/*
-		 * Look in the name cache; if that fails, look in the
-		 * directory..
-		 */
-		error = linux_getcwd_getcache(&lvp, &uvp, &bp, bufp);
-		if (error == -1)
-			error = linux_getcwd_scandir(&lvp, &uvp, &bp, bufp, p);
-		if (error)
-			goto out;
-#ifdef DIAGNOSTIC		
-		if (lvp != NULL)
-			panic("getcwd: oops, forgot to null lvp");
-		if (bufp && (bp <= bufp)) {
-			panic("getcwd: oops, went back too far");
-		}
-#endif		
-		if (bp) 
-			*(--bp) = '/';
-		lvp = uvp;
-		uvp = NULL;
-		limit--;
-	} while ((lvp != rvp) && (limit > 0)); 
-
-out:
-	if (bpp)
-		*bpp = bp;
-	if (uvp)
-		vput(uvp);
-	if (lvp)
-		vput(lvp);
-	vrele(rvp);
-	return error;
-}
-
-/*
- * Find pathname of process's current directory.
- *
- * Use vfs vnode-to-name reverse cache; if that fails, fall back
- * to reading directory contents.
- */
-
-int linux_sys_getcwd(p, v, retval) 
-	struct proc *p;
-	void   *v;
-	register_t *retval;
-{
-	register struct linux_sys_getcwd_args /* {
-		syscallarg(char *) bufp;
-		syscallarg(size_t) length;
-	} */ *uap = v;
-
-	int     error;
-	char   *path;
-	char   *bp, *bend;
-	int     len = SCARG(uap, length);
-	int	lenused;
-
-	if (len > MAXPATHLEN*4)
-		len = MAXPATHLEN*4;
-	else if (len < 2)
-		return ERANGE;
-
-	path = (char *)malloc(len, M_TEMP, M_WAITOK);
-
-	bp = &path[len];
-	bend = bp;
-	*(--bp) = '\0';
-
-	/*
-	 * 5th argument here is "max number of vnodes to traverse".
-	 * Since each entry takes up at least 2 bytes in the output buffer,
-	 * limit it to N/2 vnodes for an N byte buffer.
-	 */
-	error = linux_getcwd_common (p->p_fd->fd_cdir, NULL, &bp, path, len/2,
-			       GETCWD_CHECK_ACCESS, p);
-
-	if (error)
-		goto out;
-	lenused = bend - bp;
-	*retval = lenused;
-	/* put the result into user buffer */
-	error = copyout(bp, SCARG(uap, bufp), lenused);
-
-out:
-	free(path, M_TEMP);
-	return error;
-}