1 files changed, 0 insertions, 606 deletions

diff --git a/ANDROID_3.4.5/fs/cifs/link.c b/ANDROID_3.4.5/fs/cifs/link.c
deleted file mode 100644
index 6b0e0643..00000000
--- a/ANDROID_3.4.5/fs/cifs/link.c
+++ /dev/null
@@ -1,606 +0,0 @@
-/*
- *   fs/cifs/link.c
- *
- *   Copyright (C) International Business Machines  Corp., 2002,2008
- *   Author(s): Steve French (sfrench@us.ibm.com)
- *
- *   This library is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU Lesser General Public License as published
- *   by the Free Software Foundation; either version 2.1 of the License, or
- *   (at your option) any later version.
- *
- *   This library is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
- *   the GNU Lesser General Public License for more details.
- *
- *   You should have received a copy of the GNU Lesser General Public License
- *   along with this library; if not, write to the Free Software
- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/slab.h>
-#include <linux/namei.h>
-#include "cifsfs.h"
-#include "cifspdu.h"
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "cifs_debug.h"
-#include "cifs_fs_sb.h"
-
-#define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
-#define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
-#define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
-#define CIFS_MF_SYMLINK_LINK_MAXLEN (1024)
-#define CIFS_MF_SYMLINK_FILE_SIZE \
-	(CIFS_MF_SYMLINK_LINK_OFFSET + CIFS_MF_SYMLINK_LINK_MAXLEN)
-
-#define CIFS_MF_SYMLINK_LEN_FORMAT "XSym\n%04u\n"
-#define CIFS_MF_SYMLINK_MD5_FORMAT \
-	"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n"
-#define CIFS_MF_SYMLINK_MD5_ARGS(md5_hash) \
-	md5_hash[0],  md5_hash[1],  md5_hash[2],  md5_hash[3], \
-	md5_hash[4],  md5_hash[5],  md5_hash[6],  md5_hash[7], \
-	md5_hash[8],  md5_hash[9],  md5_hash[10], md5_hash[11],\
-	md5_hash[12], md5_hash[13], md5_hash[14], md5_hash[15]
-
-static int
-symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
-{
-	int rc;
-	unsigned int size;
-	struct crypto_shash *md5;
-	struct sdesc *sdescmd5;
-
-	md5 = crypto_alloc_shash("md5", 0, 0);
-	if (IS_ERR(md5)) {
-		rc = PTR_ERR(md5);
-		cERROR(1, "%s: Crypto md5 allocation error %d\n", __func__, rc);
-		return rc;
-	}
-	size = sizeof(struct shash_desc) + crypto_shash_descsize(md5);
-	sdescmd5 = kmalloc(size, GFP_KERNEL);
-	if (!sdescmd5) {
-		rc = -ENOMEM;
-		cERROR(1, "%s: Memory allocation failure\n", __func__);
-		goto symlink_hash_err;
-	}
-	sdescmd5->shash.tfm = md5;
-	sdescmd5->shash.flags = 0x0;
-
-	rc = crypto_shash_init(&sdescmd5->shash);
-	if (rc) {
-		cERROR(1, "%s: Could not init md5 shash\n", __func__);
-		goto symlink_hash_err;
-	}
-	rc = crypto_shash_update(&sdescmd5->shash, link_str, link_len);
-	if (rc) {
-		cERROR(1, "%s: Could not update iwth link_str\n", __func__);
-		goto symlink_hash_err;
-	}
-	rc = crypto_shash_final(&sdescmd5->shash, md5_hash);
-	if (rc)
-		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
-
-symlink_hash_err:
-	crypto_free_shash(md5);
-	kfree(sdescmd5);
-
-	return rc;
-}
-
-static int
-CIFSParseMFSymlink(const u8 *buf,
-		   unsigned int buf_len,
-		   unsigned int *_link_len,
-		   char **_link_str)
-{
-	int rc;
-	unsigned int link_len;
-	const char *md5_str1;
-	const char *link_str;
-	u8 md5_hash[16];
-	char md5_str2[34];
-
-	if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
-		return -EINVAL;
-
-	md5_str1 = (const char *)&buf[CIFS_MF_SYMLINK_MD5_OFFSET];
-	link_str = (const char *)&buf[CIFS_MF_SYMLINK_LINK_OFFSET];
-
-	rc = sscanf(buf, CIFS_MF_SYMLINK_LEN_FORMAT, &link_len);
-	if (rc != 1)
-		return -EINVAL;
-
-	rc = symlink_hash(link_len, link_str, md5_hash);
-	if (rc) {
-		cFYI(1, "%s: MD5 hash failure: %d\n", __func__, rc);
-		return rc;
-	}
-
-	snprintf(md5_str2, sizeof(md5_str2),
-		 CIFS_MF_SYMLINK_MD5_FORMAT,
-		 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
-
-	if (strncmp(md5_str1, md5_str2, 17) != 0)
-		return -EINVAL;
-
-	if (_link_str) {
-		*_link_str = kstrndup(link_str, link_len, GFP_KERNEL);
-		if (!*_link_str)
-			return -ENOMEM;
-	}
-
-	*_link_len = link_len;
-	return 0;
-}
-
-static int
-CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str)
-{
-	int rc;
-	unsigned int link_len;
-	unsigned int ofs;
-	u8 md5_hash[16];
-
-	if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
-		return -EINVAL;
-
-	link_len = strlen(link_str);
-
-	if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
-		return -ENAMETOOLONG;
-
-	rc = symlink_hash(link_len, link_str, md5_hash);
-	if (rc) {
-		cFYI(1, "%s: MD5 hash failure: %d\n", __func__, rc);
-		return rc;
-	}
-
-	snprintf(buf, buf_len,
-		 CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
-		 link_len,
-		 CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
-
-	ofs = CIFS_MF_SYMLINK_LINK_OFFSET;
-	memcpy(buf + ofs, link_str, link_len);
-
-	ofs += link_len;
-	if (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
-		buf[ofs] = '\n';
-		ofs++;
-	}
-
-	while (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
-		buf[ofs] = ' ';
-		ofs++;
-	}
-
-	return 0;
-}
-
-static int
-CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon,
-		    const char *fromName, const char *toName,
-		    struct cifs_sb_info *cifs_sb)
-{
-	int rc;
-	int oplock = 0;
-	int remap;
-	int create_options = CREATE_NOT_DIR;
-	__u16 netfid = 0;
-	u8 *buf;
-	unsigned int bytes_written = 0;
-	struct cifs_io_parms io_parms;
-	struct nls_table *nls_codepage;
-
-	nls_codepage = cifs_sb->local_nls;
-	remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
-
-	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
-	if (rc != 0) {
-		kfree(buf);
-		return rc;
-	}
-
-	if (backup_cred(cifs_sb))
-		create_options |= CREATE_OPEN_BACKUP_INTENT;
-
-	rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE,
-			 create_options, &netfid, &oplock, NULL,
-			 nls_codepage, remap);
-	if (rc != 0) {
-		kfree(buf);
-		return rc;
-	}
-
-	io_parms.netfid = netfid;
-	io_parms.pid = current->tgid;
-	io_parms.tcon = tcon;
-	io_parms.offset = 0;
-	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
-
-	rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0);
-	CIFSSMBClose(xid, tcon, netfid);
-	kfree(buf);
-	if (rc != 0)
-		return rc;
-
-	if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
-		return -EIO;
-
-	return 0;
-}
-
-static int
-CIFSQueryMFSymLink(const int xid, struct cifs_tcon *tcon,
-		   const unsigned char *searchName, char **symlinkinfo,
-		   const struct nls_table *nls_codepage, int remap)
-{
-	int rc;
-	int oplock = 0;
-	__u16 netfid = 0;
-	u8 *buf;
-	char *pbuf;
-	unsigned int bytes_read = 0;
-	int buf_type = CIFS_NO_BUFFER;
-	unsigned int link_len = 0;
-	struct cifs_io_parms io_parms;
-	FILE_ALL_INFO file_info;
-
-	rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
-			 CREATE_NOT_DIR, &netfid, &oplock, &file_info,
-			 nls_codepage, remap);
-	if (rc != 0)
-		return rc;
-
-	if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
-		CIFSSMBClose(xid, tcon, netfid);
-		/* it's not a symlink */
-		return -EINVAL;
-	}
-
-	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-	pbuf = buf;
-	io_parms.netfid = netfid;
-	io_parms.pid = current->tgid;
-	io_parms.tcon = tcon;
-	io_parms.offset = 0;
-	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
-
-	rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
-	CIFSSMBClose(xid, tcon, netfid);
-	if (rc != 0) {
-		kfree(buf);
-		return rc;
-	}
-
-	rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, symlinkinfo);
-	kfree(buf);
-	if (rc != 0)
-		return rc;
-
-	return 0;
-}
-
-bool
-CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr)
-{
-	if (!(fattr->cf_mode & S_IFREG))
-		/* it's not a symlink */
-		return false;
-
-	if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
-		/* it's not a symlink */
-		return false;
-
-	return true;
-}
-
-int
-CIFSCheckMFSymlink(struct cifs_fattr *fattr,
-		   const unsigned char *path,
-		   struct cifs_sb_info *cifs_sb, int xid)
-{
-	int rc;
-	int oplock = 0;
-	__u16 netfid = 0;
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	struct cifs_io_parms io_parms;
-	u8 *buf;
-	char *pbuf;
-	unsigned int bytes_read = 0;
-	int buf_type = CIFS_NO_BUFFER;
-	unsigned int link_len = 0;
-	FILE_ALL_INFO file_info;
-
-	if (!CIFSCouldBeMFSymlink(fattr))
-		/* it's not a symlink */
-		return 0;
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-	pTcon = tlink_tcon(tlink);
-
-	rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
-			 CREATE_NOT_DIR, &netfid, &oplock, &file_info,
-			 cifs_sb->local_nls,
-			 cifs_sb->mnt_cifs_flags &
-				CIFS_MOUNT_MAP_SPECIAL_CHR);
-	if (rc != 0)
-		goto out;
-
-	if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
-		CIFSSMBClose(xid, pTcon, netfid);
-		/* it's not a symlink */
-		goto out;
-	}
-
-	buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
-	if (!buf) {
-		rc = -ENOMEM;
-		goto out;
-	}
-	pbuf = buf;
-	io_parms.netfid = netfid;
-	io_parms.pid = current->tgid;
-	io_parms.tcon = pTcon;
-	io_parms.offset = 0;
-	io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
-
-	rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
-	CIFSSMBClose(xid, pTcon, netfid);
-	if (rc != 0) {
-		kfree(buf);
-		goto out;
-	}
-
-	rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, NULL);
-	kfree(buf);
-	if (rc == -EINVAL) {
-		/* it's not a symlink */
-		rc = 0;
-		goto out;
-	}
-
-	if (rc != 0)
-		goto out;
-
-	/* it is a symlink */
-	fattr->cf_eof = link_len;
-	fattr->cf_mode &= ~S_IFMT;
-	fattr->cf_mode |= S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
-	fattr->cf_dtype = DT_LNK;
-out:
-	cifs_put_tlink(tlink);
-	return rc;
-}
-
-int
-cifs_hardlink(struct dentry *old_file, struct inode *inode,
-	      struct dentry *direntry)
-{
-	int rc = -EACCES;
-	int xid;
-	char *fromName = NULL;
-	char *toName = NULL;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	struct cifsInodeInfo *cifsInode;
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-	pTcon = tlink_tcon(tlink);
-
-	xid = GetXid();
-
-	fromName = build_path_from_dentry(old_file);
-	toName = build_path_from_dentry(direntry);
-	if ((fromName == NULL) || (toName == NULL)) {
-		rc = -ENOMEM;
-		goto cifs_hl_exit;
-	}
-
-	if (pTcon->unix_ext)
-		rc = CIFSUnixCreateHardLink(xid, pTcon, fromName, toName,
-					    cifs_sb->local_nls,
-					    cifs_sb->mnt_cifs_flags &
-						CIFS_MOUNT_MAP_SPECIAL_CHR);
-	else {
-		rc = CIFSCreateHardLink(xid, pTcon, fromName, toName,
-					cifs_sb->local_nls,
-					cifs_sb->mnt_cifs_flags &
-						CIFS_MOUNT_MAP_SPECIAL_CHR);
-		if ((rc == -EIO) || (rc == -EINVAL))
-			rc = -EOPNOTSUPP;
-	}
-
-	d_drop(direntry);	/* force new lookup from server of target */
-
-	/* if source file is cached (oplocked) revalidate will not go to server
-	   until the file is closed or oplock broken so update nlinks locally */
-	if (old_file->d_inode) {
-		cifsInode = CIFS_I(old_file->d_inode);
-		if (rc == 0) {
-			inc_nlink(old_file->d_inode);
-/* BB should we make this contingent on superblock flag NOATIME? */
-/*			old_file->d_inode->i_ctime = CURRENT_TIME;*/
-			/* parent dir timestamps will update from srv
-			within a second, would it really be worth it
-			to set the parent dir cifs inode time to zero
-			to force revalidate (faster) for it too? */
-		}
-		/* if not oplocked will force revalidate to get info
-		   on source file from srv */
-		cifsInode->time = 0;
-
-		/* Will update parent dir timestamps from srv within a second.
-		   Would it really be worth it to set the parent dir (cifs
-		   inode) time field to zero to force revalidate on parent
-		   directory faster ie
-			CIFS_I(inode)->time = 0;  */
-	}
-
-cifs_hl_exit:
-	kfree(fromName);
-	kfree(toName);
-	FreeXid(xid);
-	cifs_put_tlink(tlink);
-	return rc;
-}
-
-void *
-cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
-{
-	struct inode *inode = direntry->d_inode;
-	int rc = -ENOMEM;
-	int xid;
-	char *full_path = NULL;
-	char *target_path = NULL;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct tcon_link *tlink = NULL;
-	struct cifs_tcon *tcon;
-
-	xid = GetXid();
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink)) {
-		rc = PTR_ERR(tlink);
-		tlink = NULL;
-		goto out;
-	}
-	tcon = tlink_tcon(tlink);
-
-	/*
-	 * For now, we just handle symlinks with unix extensions enabled.
-	 * Eventually we should handle NTFS reparse points, and MacOS
-	 * symlink support. For instance...
-	 *
-	 * rc = CIFSSMBQueryReparseLinkInfo(...)
-	 *
-	 * For now, just return -EACCES when the server doesn't support posix
-	 * extensions. Note that we still allow querying symlinks when posix
-	 * extensions are manually disabled. We could disable these as well
-	 * but there doesn't seem to be any harm in allowing the client to
-	 * read them.
-	 */
-	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
-	    && !(tcon->ses->capabilities & CAP_UNIX)) {
-		rc = -EACCES;
-		goto out;
-	}
-
-	full_path = build_path_from_dentry(direntry);
-	if (!full_path)
-		goto out;
-
-	cFYI(1, "Full path: %s inode = 0x%p", full_path, inode);
-
-	rc = -EACCES;
-	/*
-	 * First try Minshall+French Symlinks, if configured
-	 * and fallback to UNIX Extensions Symlinks.
-	 */
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
-		rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path,
-					cifs_sb->local_nls,
-					cifs_sb->mnt_cifs_flags &
-						CIFS_MOUNT_MAP_SPECIAL_CHR);
-
-	if ((rc != 0) && (tcon->ses->capabilities & CAP_UNIX))
-		rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
-					     cifs_sb->local_nls);
-
-	kfree(full_path);
-out:
-	if (rc != 0) {
-		kfree(target_path);
-		target_path = ERR_PTR(rc);
-	}
-
-	FreeXid(xid);
-	if (tlink)
-		cifs_put_tlink(tlink);
-	nd_set_link(nd, target_path);
-	return NULL;
-}
-
-int
-cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
-{
-	int rc = -EOPNOTSUPP;
-	int xid;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	char *full_path = NULL;
-	struct inode *newinode = NULL;
-
-	xid = GetXid();
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink)) {
-		rc = PTR_ERR(tlink);
-		goto symlink_exit;
-	}
-	pTcon = tlink_tcon(tlink);
-
-	full_path = build_path_from_dentry(direntry);
-	if (full_path == NULL) {
-		rc = -ENOMEM;
-		goto symlink_exit;
-	}
-
-	cFYI(1, "Full path: %s", full_path);
-	cFYI(1, "symname is %s", symname);
-
-	/* BB what if DFS and this volume is on different share? BB */
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
-		rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
-					cifs_sb);
-	else if (pTcon->unix_ext)
-		rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
-					   cifs_sb->local_nls);
-	/* else
-	   rc = CIFSCreateReparseSymLink(xid, pTcon, fromName, toName,
-					cifs_sb_target->local_nls); */
-
-	if (rc == 0) {
-		if (pTcon->unix_ext)
-			rc = cifs_get_inode_info_unix(&newinode, full_path,
-						      inode->i_sb, xid);
-		else
-			rc = cifs_get_inode_info(&newinode, full_path, NULL,
-						 inode->i_sb, xid, NULL);
-
-		if (rc != 0) {
-			cFYI(1, "Create symlink ok, getinodeinfo fail rc = %d",
-			      rc);
-		} else {
-			d_instantiate(direntry, newinode);
-		}
-	}
-symlink_exit:
-	kfree(full_path);
-	cifs_put_tlink(tlink);
-	FreeXid(xid);
-	return rc;
-}
-
-void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
-{
-	char *p = nd_get_link(nd);
-	if (!IS_ERR(p))
-		kfree(p);
-}