651 lines
15 KiB
C
651 lines
15 KiB
C
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// SPDX-License-Identifier: LGPL-2.1
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/*
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*
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* Copyright (C) International Business Machines Corp., 2002,2008
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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*/
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#include <linux/fs.h>
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#include <linux/stat.h>
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#include <linux/slab.h>
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#include <linux/namei.h>
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#include "cifsfs.h"
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifs_fs_sb.h"
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#include "cifs_unicode.h"
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#include "smb2proto.h"
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#include "cifs_ioctl.h"
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/*
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* M-F Symlink Functions - Begin
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*/
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#define CIFS_MF_SYMLINK_LEN_OFFSET (4+1)
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#define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1))
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#define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1))
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#define CIFS_MF_SYMLINK_LINK_MAXLEN (1024)
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#define CIFS_MF_SYMLINK_FILE_SIZE \
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(CIFS_MF_SYMLINK_LINK_OFFSET + CIFS_MF_SYMLINK_LINK_MAXLEN)
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#define CIFS_MF_SYMLINK_LEN_FORMAT "XSym\n%04u\n"
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#define CIFS_MF_SYMLINK_MD5_FORMAT "%16phN\n"
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#define CIFS_MF_SYMLINK_MD5_ARGS(md5_hash) md5_hash
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static int
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symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
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{
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int rc;
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struct shash_desc *md5 = NULL;
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rc = cifs_alloc_hash("md5", &md5);
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if (rc)
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goto symlink_hash_err;
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rc = crypto_shash_init(md5);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not init md5 shash\n", __func__);
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goto symlink_hash_err;
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}
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rc = crypto_shash_update(md5, link_str, link_len);
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if (rc) {
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cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__);
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goto symlink_hash_err;
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}
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rc = crypto_shash_final(md5, md5_hash);
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if (rc)
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cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
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symlink_hash_err:
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cifs_free_hash(&md5);
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return rc;
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}
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static int
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parse_mf_symlink(const u8 *buf, unsigned int buf_len, unsigned int *_link_len,
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char **_link_str)
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{
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int rc;
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unsigned int link_len;
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const char *md5_str1;
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const char *link_str;
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u8 md5_hash[16];
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char md5_str2[34];
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if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
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return -EINVAL;
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md5_str1 = (const char *)&buf[CIFS_MF_SYMLINK_MD5_OFFSET];
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link_str = (const char *)&buf[CIFS_MF_SYMLINK_LINK_OFFSET];
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rc = sscanf(buf, CIFS_MF_SYMLINK_LEN_FORMAT, &link_len);
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if (rc != 1)
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return -EINVAL;
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if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
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return -EINVAL;
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rc = symlink_hash(link_len, link_str, md5_hash);
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if (rc) {
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cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
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return rc;
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}
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scnprintf(md5_str2, sizeof(md5_str2),
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CIFS_MF_SYMLINK_MD5_FORMAT,
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CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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if (strncmp(md5_str1, md5_str2, 17) != 0)
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return -EINVAL;
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if (_link_str) {
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*_link_str = kstrndup(link_str, link_len, GFP_KERNEL);
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if (!*_link_str)
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return -ENOMEM;
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}
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*_link_len = link_len;
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return 0;
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}
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static int
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format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
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{
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int rc;
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unsigned int link_len;
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unsigned int ofs;
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u8 md5_hash[16];
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if (buf_len != CIFS_MF_SYMLINK_FILE_SIZE)
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return -EINVAL;
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link_len = strlen(link_str);
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if (link_len > CIFS_MF_SYMLINK_LINK_MAXLEN)
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return -ENAMETOOLONG;
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rc = symlink_hash(link_len, link_str, md5_hash);
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if (rc) {
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cifs_dbg(FYI, "%s: MD5 hash failure: %d\n", __func__, rc);
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return rc;
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}
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scnprintf(buf, buf_len,
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CIFS_MF_SYMLINK_LEN_FORMAT CIFS_MF_SYMLINK_MD5_FORMAT,
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link_len,
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CIFS_MF_SYMLINK_MD5_ARGS(md5_hash));
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ofs = CIFS_MF_SYMLINK_LINK_OFFSET;
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memcpy(buf + ofs, link_str, link_len);
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ofs += link_len;
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if (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
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buf[ofs] = '\n';
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ofs++;
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}
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while (ofs < CIFS_MF_SYMLINK_FILE_SIZE) {
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buf[ofs] = ' ';
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ofs++;
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}
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return 0;
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}
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bool
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couldbe_mf_symlink(const struct cifs_fattr *fattr)
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{
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if (!S_ISREG(fattr->cf_mode))
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/* it's not a symlink */
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return false;
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if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE)
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/* it's not a symlink */
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return false;
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return true;
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}
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static int
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create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const char *fromName,
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const char *toName)
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{
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int rc;
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u8 *buf;
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unsigned int bytes_written = 0;
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buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName);
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if (rc)
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goto out;
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if (tcon->ses->server->ops->create_mf_symlink)
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rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon,
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cifs_sb, fromName, buf, &bytes_written);
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else
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rc = -EOPNOTSUPP;
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if (rc)
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goto out;
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if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE)
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rc = -EIO;
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out:
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kfree(buf);
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return rc;
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}
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int
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check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
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const unsigned char *path)
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{
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int rc;
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u8 *buf = NULL;
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unsigned int link_len = 0;
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unsigned int bytes_read = 0;
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char *symlink = NULL;
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if (!couldbe_mf_symlink(fattr))
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/* it's not a symlink */
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return 0;
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buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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if (tcon->ses->server->ops->query_mf_symlink)
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rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
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cifs_sb, path, buf, &bytes_read);
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else
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rc = -ENOSYS;
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if (rc)
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goto out;
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if (bytes_read == 0) /* not a symlink */
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goto out;
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rc = parse_mf_symlink(buf, bytes_read, &link_len, &symlink);
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if (rc == -EINVAL) {
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/* it's not a symlink */
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rc = 0;
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goto out;
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}
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if (rc != 0)
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goto out;
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/* it is a symlink */
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fattr->cf_eof = link_len;
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fattr->cf_mode &= ~S_IFMT;
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fattr->cf_mode |= S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO;
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fattr->cf_dtype = DT_LNK;
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fattr->cf_symlink_target = symlink;
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out:
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kfree(buf);
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return rc;
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}
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#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
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/*
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* SMB 1.0 Protocol specific functions
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*/
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int
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cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const unsigned char *path,
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char *pbuf, unsigned int *pbytes_read)
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{
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int rc;
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int oplock = 0;
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struct cifs_fid fid;
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struct cifs_open_parms oparms;
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struct cifs_io_parms io_parms = {0};
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int buf_type = CIFS_NO_BUFFER;
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FILE_ALL_INFO file_info;
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oparms = (struct cifs_open_parms) {
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.tcon = tcon,
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.cifs_sb = cifs_sb,
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.desired_access = GENERIC_READ,
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.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
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.disposition = FILE_OPEN,
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.path = path,
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.fid = &fid,
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};
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rc = CIFS_open(xid, &oparms, &oplock, &file_info);
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if (rc)
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return rc;
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if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
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rc = -ENOENT;
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/* it's not a symlink */
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goto out;
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}
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io_parms.netfid = fid.netfid;
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io_parms.pid = current->tgid;
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io_parms.tcon = tcon;
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io_parms.offset = 0;
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io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
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rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
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out:
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CIFSSMBClose(xid, tcon, fid.netfid);
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return rc;
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}
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int
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cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const unsigned char *path,
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char *pbuf, unsigned int *pbytes_written)
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{
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int rc;
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int oplock = 0;
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struct cifs_fid fid;
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struct cifs_open_parms oparms;
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struct cifs_io_parms io_parms = {0};
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oparms = (struct cifs_open_parms) {
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.tcon = tcon,
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.cifs_sb = cifs_sb,
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.desired_access = GENERIC_WRITE,
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.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
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.disposition = FILE_CREATE,
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.path = path,
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.fid = &fid,
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};
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rc = CIFS_open(xid, &oparms, &oplock, NULL);
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if (rc)
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return rc;
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io_parms.netfid = fid.netfid;
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io_parms.pid = current->tgid;
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io_parms.tcon = tcon;
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io_parms.offset = 0;
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io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
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rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf);
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CIFSSMBClose(xid, tcon, fid.netfid);
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return rc;
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}
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#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
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/*
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* SMB 2.1/SMB3 Protocol specific functions
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*/
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int
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smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const unsigned char *path,
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char *pbuf, unsigned int *pbytes_read)
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{
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int rc;
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struct cifs_fid fid;
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struct cifs_open_parms oparms;
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struct cifs_io_parms io_parms = {0};
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int buf_type = CIFS_NO_BUFFER;
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__le16 *utf16_path;
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__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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struct smb2_file_all_info *pfile_info = NULL;
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oparms = (struct cifs_open_parms) {
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.tcon = tcon,
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.cifs_sb = cifs_sb,
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.path = path,
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.desired_access = GENERIC_READ,
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|
|
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
|
||
|
|
.disposition = FILE_OPEN,
|
||
|
|
.fid = &fid,
|
||
|
|
};
|
||
|
|
|
||
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
||
|
|
if (utf16_path == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
pfile_info = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
|
||
|
|
GFP_KERNEL);
|
||
|
|
|
||
|
|
if (pfile_info == NULL) {
|
||
|
|
kfree(utf16_path);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, pfile_info, NULL,
|
||
|
|
NULL, NULL);
|
||
|
|
if (rc)
|
||
|
|
goto qmf_out_open_fail;
|
||
|
|
|
||
|
|
if (pfile_info->EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
|
||
|
|
/* it's not a symlink */
|
||
|
|
rc = -ENOENT; /* Is there a better rc to return? */
|
||
|
|
goto qmf_out;
|
||
|
|
}
|
||
|
|
|
||
|
|
io_parms.netfid = fid.netfid;
|
||
|
|
io_parms.pid = current->tgid;
|
||
|
|
io_parms.tcon = tcon;
|
||
|
|
io_parms.offset = 0;
|
||
|
|
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
|
||
|
|
io_parms.persistent_fid = fid.persistent_fid;
|
||
|
|
io_parms.volatile_fid = fid.volatile_fid;
|
||
|
|
rc = SMB2_read(xid, &io_parms, pbytes_read, &pbuf, &buf_type);
|
||
|
|
qmf_out:
|
||
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
||
|
|
qmf_out_open_fail:
|
||
|
|
kfree(utf16_path);
|
||
|
|
kfree(pfile_info);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
|
||
|
|
struct cifs_sb_info *cifs_sb, const unsigned char *path,
|
||
|
|
char *pbuf, unsigned int *pbytes_written)
|
||
|
|
{
|
||
|
|
int rc;
|
||
|
|
struct cifs_fid fid;
|
||
|
|
struct cifs_open_parms oparms;
|
||
|
|
struct cifs_io_parms io_parms = {0};
|
||
|
|
__le16 *utf16_path;
|
||
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
||
|
|
struct kvec iov[2];
|
||
|
|
|
||
|
|
cifs_dbg(FYI, "%s: path: %s\n", __func__, path);
|
||
|
|
|
||
|
|
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
||
|
|
if (!utf16_path)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
oparms = (struct cifs_open_parms) {
|
||
|
|
.tcon = tcon,
|
||
|
|
.cifs_sb = cifs_sb,
|
||
|
|
.path = path,
|
||
|
|
.desired_access = GENERIC_WRITE,
|
||
|
|
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
|
||
|
|
.disposition = FILE_CREATE,
|
||
|
|
.fid = &fid,
|
||
|
|
.mode = 0644,
|
||
|
|
};
|
||
|
|
|
||
|
|
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
|
||
|
|
NULL, NULL);
|
||
|
|
if (rc) {
|
||
|
|
kfree(utf16_path);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
io_parms.netfid = fid.netfid;
|
||
|
|
io_parms.pid = current->tgid;
|
||
|
|
io_parms.tcon = tcon;
|
||
|
|
io_parms.offset = 0;
|
||
|
|
io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
|
||
|
|
io_parms.persistent_fid = fid.persistent_fid;
|
||
|
|
io_parms.volatile_fid = fid.volatile_fid;
|
||
|
|
|
||
|
|
/* iov[0] is reserved for smb header */
|
||
|
|
iov[1].iov_base = pbuf;
|
||
|
|
iov[1].iov_len = CIFS_MF_SYMLINK_FILE_SIZE;
|
||
|
|
|
||
|
|
rc = SMB2_write(xid, &io_parms, pbytes_written, iov, 1);
|
||
|
|
|
||
|
|
/* Make sure we wrote all of the symlink data */
|
||
|
|
if ((rc == 0) && (*pbytes_written != CIFS_MF_SYMLINK_FILE_SIZE))
|
||
|
|
rc = -EIO;
|
||
|
|
|
||
|
|
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
||
|
|
|
||
|
|
kfree(utf16_path);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* M-F Symlink Functions - End
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
cifs_hardlink(struct dentry *old_file, struct inode *inode,
|
||
|
|
struct dentry *direntry)
|
||
|
|
{
|
||
|
|
int rc = -EACCES;
|
||
|
|
unsigned int xid;
|
||
|
|
const char *from_name, *to_name;
|
||
|
|
void *page1, *page2;
|
||
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
||
|
|
struct tcon_link *tlink;
|
||
|
|
struct cifs_tcon *tcon;
|
||
|
|
struct TCP_Server_Info *server;
|
||
|
|
struct cifsInodeInfo *cifsInode;
|
||
|
|
|
||
|
|
if (unlikely(cifs_forced_shutdown(cifs_sb)))
|
||
|
|
return -EIO;
|
||
|
|
|
||
|
|
tlink = cifs_sb_tlink(cifs_sb);
|
||
|
|
if (IS_ERR(tlink))
|
||
|
|
return PTR_ERR(tlink);
|
||
|
|
tcon = tlink_tcon(tlink);
|
||
|
|
|
||
|
|
xid = get_xid();
|
||
|
|
page1 = alloc_dentry_path();
|
||
|
|
page2 = alloc_dentry_path();
|
||
|
|
|
||
|
|
from_name = build_path_from_dentry(old_file, page1);
|
||
|
|
if (IS_ERR(from_name)) {
|
||
|
|
rc = PTR_ERR(from_name);
|
||
|
|
goto cifs_hl_exit;
|
||
|
|
}
|
||
|
|
to_name = build_path_from_dentry(direntry, page2);
|
||
|
|
if (IS_ERR(to_name)) {
|
||
|
|
rc = PTR_ERR(to_name);
|
||
|
|
goto cifs_hl_exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
|
||
|
|
if (tcon->unix_ext)
|
||
|
|
rc = CIFSUnixCreateHardLink(xid, tcon, from_name, to_name,
|
||
|
|
cifs_sb->local_nls,
|
||
|
|
cifs_remap(cifs_sb));
|
||
|
|
else {
|
||
|
|
#else
|
||
|
|
{
|
||
|
|
#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
|
||
|
|
server = tcon->ses->server;
|
||
|
|
if (!server->ops->create_hardlink) {
|
||
|
|
rc = -ENOSYS;
|
||
|
|
goto cifs_hl_exit;
|
||
|
|
}
|
||
|
|
rc = server->ops->create_hardlink(xid, tcon, from_name, to_name,
|
||
|
|
cifs_sb);
|
||
|
|
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 (d_really_is_positive(old_file)) {
|
||
|
|
cifsInode = CIFS_I(d_inode(old_file));
|
||
|
|
if (rc == 0) {
|
||
|
|
spin_lock(&d_inode(old_file)->i_lock);
|
||
|
|
inc_nlink(d_inode(old_file));
|
||
|
|
spin_unlock(&d_inode(old_file)->i_lock);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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. Note Samba server prior to 4.2 has bug -
|
||
|
|
* not updating src file ctime on hardlinks but Windows servers
|
||
|
|
* handle it properly
|
||
|
|
*/
|
||
|
|
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:
|
||
|
|
free_dentry_path(page1);
|
||
|
|
free_dentry_path(page2);
|
||
|
|
free_xid(xid);
|
||
|
|
cifs_put_tlink(tlink);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
cifs_symlink(struct mnt_idmap *idmap, struct inode *inode,
|
||
|
|
struct dentry *direntry, const char *symname)
|
||
|
|
{
|
||
|
|
int rc = -EOPNOTSUPP;
|
||
|
|
unsigned int xid;
|
||
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
||
|
|
struct tcon_link *tlink;
|
||
|
|
struct cifs_tcon *pTcon;
|
||
|
|
const char *full_path;
|
||
|
|
void *page;
|
||
|
|
struct inode *newinode = NULL;
|
||
|
|
|
||
|
|
if (unlikely(cifs_forced_shutdown(cifs_sb)))
|
||
|
|
return -EIO;
|
||
|
|
|
||
|
|
page = alloc_dentry_path();
|
||
|
|
if (!page)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
xid = get_xid();
|
||
|
|
|
||
|
|
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, page);
|
||
|
|
if (IS_ERR(full_path)) {
|
||
|
|
rc = PTR_ERR(full_path);
|
||
|
|
goto symlink_exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
cifs_dbg(FYI, "Full path: %s\n", full_path);
|
||
|
|
cifs_dbg(FYI, "symname is %s\n", symname);
|
||
|
|
|
||
|
|
/* BB what if DFS and this volume is on different share? BB */
|
||
|
|
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
|
||
|
|
rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname);
|
||
|
|
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
|
||
|
|
else if (pTcon->unix_ext)
|
||
|
|
rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
|
||
|
|
cifs_sb->local_nls,
|
||
|
|
cifs_remap(cifs_sb));
|
||
|
|
#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
|
||
|
|
/* else
|
||
|
|
rc = CIFSCreateReparseSymLink(xid, pTcon, fromName, toName,
|
||
|
|
cifs_sb_target->local_nls); */
|
||
|
|
|
||
|
|
if (rc == 0) {
|
||
|
|
if (pTcon->posix_extensions)
|
||
|
|
rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
|
||
|
|
else 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) {
|
||
|
|
cifs_dbg(FYI, "Create symlink ok, getinodeinfo fail rc = %d\n",
|
||
|
|
rc);
|
||
|
|
} else {
|
||
|
|
d_instantiate(direntry, newinode);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
symlink_exit:
|
||
|
|
free_dentry_path(page);
|
||
|
|
cifs_put_tlink(tlink);
|
||
|
|
free_xid(xid);
|
||
|
|
return rc;
|
||
|
|
}
|