cifs: Use smb 2 - 3 and cifsacl mount options getacl functions
Fill in smb2/3 query acl functions in ops structures and use them. Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <smfrench@gmail.com>
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@ -1288,6 +1288,107 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
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return rc;
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}
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static struct cifs_ntsd *
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get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
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const struct cifs_fid *cifsfid, u32 *pacllen)
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{
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struct cifs_ntsd *pntsd = NULL;
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unsigned int xid;
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int rc = -EOPNOTSUPP;
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struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
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if (IS_ERR(tlink))
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return ERR_CAST(tlink);
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xid = get_xid();
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cifs_dbg(FYI, "trying to get acl\n");
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rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
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cifsfid->volatile_fid, (void **)&pntsd, pacllen);
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free_xid(xid);
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cifs_put_tlink(tlink);
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cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
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if (rc)
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return ERR_PTR(rc);
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return pntsd;
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}
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static struct cifs_ntsd *
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get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
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const char *path, u32 *pacllen)
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{
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struct cifs_ntsd *pntsd = NULL;
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u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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unsigned int xid;
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int rc;
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struct cifs_tcon *tcon;
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struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
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struct cifs_fid fid;
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struct cifs_open_parms oparms;
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__le16 *utf16_path;
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cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
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if (IS_ERR(tlink))
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return ERR_CAST(tlink);
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tcon = tlink_tcon(tlink);
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xid = get_xid();
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if (backup_cred(cifs_sb))
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oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
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else
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oparms.create_options = 0;
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utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
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if (!utf16_path)
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return ERR_PTR(-ENOMEM);
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oparms.tcon = tcon;
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oparms.desired_access = READ_CONTROL;
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oparms.disposition = FILE_OPEN;
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oparms.fid = &fid;
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oparms.reconnect = false;
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rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
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kfree(utf16_path);
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if (!rc) {
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rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
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fid.volatile_fid, (void **)&pntsd, pacllen);
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SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
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}
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cifs_put_tlink(tlink);
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free_xid(xid);
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cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
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if (rc)
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return ERR_PTR(rc);
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return pntsd;
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}
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/* Retrieve an ACL from the server */
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static struct cifs_ntsd *
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get_smb2_acl(struct cifs_sb_info *cifs_sb,
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struct inode *inode, const char *path,
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u32 *pacllen)
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{
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struct cifs_ntsd *pntsd = NULL;
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struct cifsFileInfo *open_file = NULL;
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if (inode)
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open_file = find_readable_file(CIFS_I(inode), true);
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if (!open_file)
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return get_smb2_acl_by_path(cifs_sb, path, pacllen);
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pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
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cifsFileInfo_put(open_file);
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return pntsd;
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}
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static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
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loff_t offset, loff_t len, bool keep_size)
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{
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@ -2393,6 +2494,11 @@ struct smb_version_operations smb20_operations = {
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.dir_needs_close = smb2_dir_needs_close,
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.get_dfs_refer = smb2_get_dfs_refer,
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.select_sectype = smb2_select_sectype,
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#ifdef CONFIG_CIFS_ACL
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.get_acl = get_smb2_acl,
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.get_acl_by_fid = get_smb2_acl_by_fid,
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/* .set_acl = set_smb3_acl, */
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#endif /* CIFS_ACL */
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};
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struct smb_version_operations smb21_operations = {
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@ -2477,6 +2583,11 @@ struct smb_version_operations smb21_operations = {
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.enum_snapshots = smb3_enum_snapshots,
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.get_dfs_refer = smb2_get_dfs_refer,
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.select_sectype = smb2_select_sectype,
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#ifdef CONFIG_CIFS_ACL
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.get_acl = get_smb2_acl,
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.get_acl_by_fid = get_smb2_acl_by_fid,
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/* .set_acl = set_smb3_acl, */
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#endif /* CIFS_ACL */
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};
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struct smb_version_operations smb30_operations = {
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@ -2571,6 +2682,11 @@ struct smb_version_operations smb30_operations = {
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.receive_transform = smb3_receive_transform,
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.get_dfs_refer = smb2_get_dfs_refer,
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.select_sectype = smb2_select_sectype,
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#ifdef CONFIG_CIFS_ACL
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.get_acl = get_smb2_acl,
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.get_acl_by_fid = get_smb2_acl_by_fid,
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/* .set_acl = set_smb3_acl, */
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#endif /* CIFS_ACL */
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};
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#ifdef CONFIG_CIFS_SMB311
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