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Cache targetcli on file open in the SMBCFILE struct. Bug 11295 - Excessive cli_resolve_path() usage can slow down transmission. BUG: https://bugzilla.samba.org/show_bug.cgi?id=11295 Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Michael Adam <obnox@samba.org>
561 lines
15 KiB
C
561 lines
15 KiB
C
/*
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Unix SMB/Netbios implementation.
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SMB client library implementation
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Copyright (C) Andrew Tridgell 1998
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Copyright (C) Richard Sharpe 2000, 2002
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Copyright (C) John Terpstra 2000
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Copyright (C) Tom Jansen (Ninja ISD) 2002
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Copyright (C) Derrell Lipman 2003-2008
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Copyright (C) Jeremy Allison 2007, 2008
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#ifndef _LIBSMB_INTERNAL_H_
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#define _LIBSMB_INTERNAL_H_
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#include "../include/libsmbclient.h"
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#include "libsmb/clirap.h"
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#define SMBC_MAX_NAME 1023
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#define SMBC_FILE_MODE (S_IFREG | 0444)
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#define SMBC_DIR_MODE (S_IFDIR | 0555)
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/*
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* DOS Attribute values (used internally)
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*/
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typedef struct DOS_ATTR_DESC {
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int mode;
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off_t size;
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time_t create_time;
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time_t access_time;
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time_t write_time;
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time_t change_time;
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SMB_INO_T inode;
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} DOS_ATTR_DESC;
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/*
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* Extension of libsmbclient.h's #defines
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*/
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#define SMB_CTX_FLAG_USE_NT_HASH (1 << 4)
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/*
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* Internal flags for extended attributes
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*/
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/* internal mode values */
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#define SMBC_XATTR_MODE_ADD 1
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#define SMBC_XATTR_MODE_REMOVE 2
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#define SMBC_XATTR_MODE_REMOVE_ALL 3
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#define SMBC_XATTR_MODE_SET 4
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#define SMBC_XATTR_MODE_CHOWN 5
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#define SMBC_XATTR_MODE_CHGRP 6
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#define CREATE_ACCESS_READ READ_CONTROL_ACCESS
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/*We should test for this in configure ... */
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#ifndef ENOTSUP
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#define ENOTSUP EOPNOTSUPP
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#endif
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struct _SMBCSRV {
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struct cli_state *cli;
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dev_t dev;
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bool no_pathinfo;
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bool no_pathinfo2;
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bool no_pathinfo3;
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bool no_nt_session;
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struct policy_handle pol;
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time_t last_echo_time;
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SMBCSRV *next, *prev;
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};
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/*
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* Keep directory entries in a list
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*/
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struct smbc_dir_list {
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struct smbc_dir_list *next;
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struct smbc_dirent *dirent;
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};
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/*
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* Structure for open file management
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*/
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struct _SMBCFILE {
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int cli_fd;
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/*
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* cache of cli_state we opened cli_fd on.
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* Due to DFS can be a subsidiary connection to srv->cli
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*/
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struct cli_state *targetcli;
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char *fname;
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off_t offset;
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struct _SMBCSRV *srv;
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bool file;
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struct smbc_dir_list *dir_list, *dir_end, *dir_next;
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int dir_type, dir_error;
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SMBCFILE *next, *prev;
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};
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/*
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* Context structure
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*/
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struct SMBC_internal_data {
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/* True when this handle is initialized */
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bool initialized;
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/* dirent pointer location */
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struct smbc_dirent dirent;
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/*
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* Leave room for any urlencoded filename and the comment field.
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*
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* We use (NAME_MAX * 3) plus whatever the max length of a comment is,
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* plus a couple of null terminators (one after the filename,
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* one after the comment).
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*
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* According to <linux/limits.h>, NAME_MAX is 255. Is it longer
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* anyplace else?
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*/
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char _dirent_name[1024];
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/*
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* server connection list
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*/
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SMBCSRV * servers;
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/*
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* open file/dir list
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*/
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SMBCFILE * files;
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/*
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* Support "Create Time" in get/set with the *xattr() functions, if
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* true. This replaces the dos attribute strings C_TIME, A_TIME and
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* M_TIME with CHANGE_TIME, ACCESS_TIME and WRITE_TIME, and adds
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* CREATE_TIME. Default is FALSE, i.e. to use the old-style shorter
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* names and to not support CREATE time, for backward compatibility.
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*/
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bool full_time_names;
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/*
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* The share mode of a file being opened. To match POSIX semantics
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* (and maintain backward compatibility), DENY_NONE is the default.
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*/
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smbc_share_mode share_mode;
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/*
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* Authentication function which includes the context. This will be
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* used if set; otherwise context->callbacks.auth_fn() will be used.
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*/
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smbc_get_auth_data_with_context_fn auth_fn_with_context;
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/*
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* An opaque (to this library) user data handle which can be set
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* and retrieved with smbc_option_set() and smbc_option_get().
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*/
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void * user_data;
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/*
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* Should we attempt UNIX smb encryption ?
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* Set to 0 if we should never attempt, set to 1 if
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* encryption requested, set to 2 if encryption required.
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*/
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smbc_smb_encrypt_level smb_encryption_level;
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/*
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* Should we request case sensitivity of file names?
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*/
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bool case_sensitive;
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/*
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* Auth info needed for DFS traversal.
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*/
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struct user_auth_info *auth_info;
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struct smbc_server_cache * server_cache;
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/* POSIX emulation functions */
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struct
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{
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#if 0 /* Left in libsmbclient.h for backward compatibility */
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smbc_open_fn open_fn;
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smbc_creat_fn creat_fn;
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smbc_read_fn read_fn;
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smbc_write_fn write_fn;
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smbc_unlink_fn unlink_fn;
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smbc_rename_fn rename_fn;
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smbc_lseek_fn lseek_fn;
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smbc_stat_fn stat_fn;
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smbc_fstat_fn fstat_fn;
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#endif
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smbc_statvfs_fn statvfs_fn;
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smbc_fstatvfs_fn fstatvfs_fn;
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smbc_ftruncate_fn ftruncate_fn;
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#if 0 /* Left in libsmbclient.h for backward compatibility */
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smbc_close_fn close_fn;
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smbc_opendir_fn opendir_fn;
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smbc_closedir_fn closedir_fn;
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smbc_readdir_fn readdir_fn;
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smbc_getdents_fn getdents_fn;
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smbc_mkdir_fn mkdir_fn;
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smbc_rmdir_fn rmdir_fn;
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smbc_telldir_fn telldir_fn;
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smbc_lseekdir_fn lseekdir_fn;
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smbc_fstatdir_fn fstatdir_fn;
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smbc_chmod_fn chmod_fn;
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smbc_utimes_fn utimes_fn;
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smbc_setxattr_fn setxattr_fn;
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smbc_getxattr_fn getxattr_fn;
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smbc_removexattr_fn removexattr_fn;
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smbc_listxattr_fn listxattr_fn;
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#endif
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} posix_emu;
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#if 0 /* Left in libsmbclient.h for backward compatibility */
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/* Printing-related functions */
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struct
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{
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smbc_print_file_fn print_file_fn;
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smbc_open_print_job_fn open_print_job_fn;
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smbc_list_print_jobs_fn list_print_jobs_fn;
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smbc_unlink_print_job_fn unlink_print_job_fn;
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} printing;
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#endif
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/* SMB high-level functions */
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struct
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{
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smbc_splice_fn splice_fn;
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} smb;
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uint16_t port;
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};
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/* Functions in libsmb_cache.c */
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int
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SMBC_add_cached_server(SMBCCTX * context,
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SMBCSRV * newsrv,
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const char * server,
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const char * share,
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const char * workgroup,
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const char * username);
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SMBCSRV *
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SMBC_get_cached_server(SMBCCTX * context,
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const char * server,
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const char * share,
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const char * workgroup,
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const char * user);
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int
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SMBC_remove_cached_server(SMBCCTX * context,
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SMBCSRV * server);
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int
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SMBC_purge_cached_servers(SMBCCTX * context);
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/* Functions in libsmb_dir.c */
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int
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SMBC_check_options(char *server,
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char *share,
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char *path,
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char *options);
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SMBCFILE *
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SMBC_opendir_ctx(SMBCCTX *context,
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const char *fname);
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int
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SMBC_closedir_ctx(SMBCCTX *context,
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SMBCFILE *dir);
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struct smbc_dirent *
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SMBC_readdir_ctx(SMBCCTX *context,
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SMBCFILE *dir);
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int
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SMBC_getdents_ctx(SMBCCTX *context,
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SMBCFILE *dir,
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struct smbc_dirent *dirp,
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int count);
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int
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SMBC_mkdir_ctx(SMBCCTX *context,
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const char *fname,
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mode_t mode);
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int
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SMBC_rmdir_ctx(SMBCCTX *context,
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const char *fname);
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off_t
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SMBC_telldir_ctx(SMBCCTX *context,
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SMBCFILE *dir);
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int
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SMBC_lseekdir_ctx(SMBCCTX *context,
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SMBCFILE *dir,
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off_t offset);
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int
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SMBC_fstatdir_ctx(SMBCCTX *context,
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SMBCFILE *dir,
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struct stat *st);
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int
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SMBC_chmod_ctx(SMBCCTX *context,
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const char *fname,
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mode_t newmode);
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int
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SMBC_utimes_ctx(SMBCCTX *context,
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const char *fname,
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struct timeval *tbuf);
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int
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SMBC_unlink_ctx(SMBCCTX *context,
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const char *fname);
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int
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SMBC_rename_ctx(SMBCCTX *ocontext,
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const char *oname,
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SMBCCTX *ncontext,
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const char *nname);
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/* Functions in libsmb_file.c */
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SMBCFILE *
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SMBC_open_ctx(SMBCCTX *context,
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const char *fname,
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int flags,
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mode_t mode);
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SMBCFILE *
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SMBC_creat_ctx(SMBCCTX *context,
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const char *path,
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mode_t mode);
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ssize_t
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SMBC_read_ctx(SMBCCTX *context,
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SMBCFILE *file,
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void *buf,
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size_t count);
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ssize_t
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SMBC_write_ctx(SMBCCTX *context,
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SMBCFILE *file,
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const void *buf,
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size_t count);
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off_t
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SMBC_splice_ctx(SMBCCTX *context,
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SMBCFILE *srcfile,
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SMBCFILE *dstfile,
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off_t count,
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int (*splice_cb)(off_t n, void *priv),
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void *priv);
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int
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SMBC_close_ctx(SMBCCTX *context,
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SMBCFILE *file);
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bool
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SMBC_getatr(SMBCCTX * context,
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SMBCSRV *srv,
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const char *path,
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uint16_t *mode,
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off_t *size,
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struct timespec *create_time_ts,
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struct timespec *access_time_ts,
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struct timespec *write_time_ts,
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struct timespec *change_time_ts,
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SMB_INO_T *ino);
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bool
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SMBC_setatr(SMBCCTX * context, SMBCSRV *srv, char *path,
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time_t create_time,
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time_t access_time,
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time_t write_time,
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time_t change_time,
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uint16_t mode);
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off_t
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SMBC_lseek_ctx(SMBCCTX *context,
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SMBCFILE *file,
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off_t offset,
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int whence);
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int
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SMBC_ftruncate_ctx(SMBCCTX *context,
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SMBCFILE *file,
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off_t length);
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/* Functions in libsmb_misc.c */
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int
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SMBC_dlist_contains(SMBCFILE * list, SMBCFILE *p);
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int
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SMBC_errno(SMBCCTX *context,
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struct cli_state *c);
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/* Functions in libsmb_path.c */
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int
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SMBC_parse_path(TALLOC_CTX *ctx,
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SMBCCTX *context,
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const char *fname,
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char **pp_workgroup,
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char **pp_server,
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uint16_t *p_port,
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char **pp_share,
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char **pp_path,
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char **pp_user,
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char **pp_password,
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char **pp_options);
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/* Functions in libsmb_printjob.c */
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SMBCFILE *
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SMBC_open_print_job_ctx(SMBCCTX *context,
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const char *fname);
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int
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SMBC_print_file_ctx(SMBCCTX *c_file,
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const char *fname,
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SMBCCTX *c_print,
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const char *printq);
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int
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SMBC_list_print_jobs_ctx(SMBCCTX *context,
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const char *fname,
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smbc_list_print_job_fn fn);
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int
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SMBC_unlink_print_job_ctx(SMBCCTX *context,
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const char *fname,
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int id);
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/* Functions in libsmb_server.c */
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int
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SMBC_check_server(SMBCCTX * context,
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SMBCSRV * server);
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int
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SMBC_remove_unused_server(SMBCCTX * context,
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SMBCSRV * srv);
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void
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SMBC_get_auth_data(const char *server, const char *share,
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char *workgroup_buf, int workgroup_buf_len,
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char *username_buf, int username_buf_len,
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char *password_buf, int password_buf_len);
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SMBCSRV *
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SMBC_find_server(TALLOC_CTX *ctx,
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SMBCCTX *context,
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const char *server,
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const char *share,
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char **pp_workgroup,
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char **pp_username,
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char **pp_password);
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SMBCSRV *
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SMBC_server(TALLOC_CTX *ctx,
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SMBCCTX *context,
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bool connect_if_not_found,
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const char *server,
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uint16_t port,
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const char *share,
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char **pp_workgroup,
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char **pp_username,
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char **pp_password);
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SMBCSRV *
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SMBC_attr_server(TALLOC_CTX *ctx,
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SMBCCTX *context,
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const char *server,
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uint16_t port,
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const char *share,
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char **pp_workgroup,
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char **pp_username,
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char **pp_password);
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/* Functions in libsmb_stat.c */
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int
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SMBC_stat_ctx(SMBCCTX *context,
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const char *fname,
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struct stat *st);
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int
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SMBC_fstat_ctx(SMBCCTX *context,
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SMBCFILE *file,
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struct stat *st);
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int
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SMBC_statvfs_ctx(SMBCCTX *context,
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char *path,
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struct statvfs *st);
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int
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SMBC_fstatvfs_ctx(SMBCCTX *context,
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SMBCFILE *file,
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struct statvfs *st);
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/* Functions in libsmb_xattr.c */
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int
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SMBC_setxattr_ctx(SMBCCTX *context,
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const char *fname,
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const char *name,
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const void *value,
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size_t size,
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int flags);
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int
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SMBC_getxattr_ctx(SMBCCTX *context,
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const char *fname,
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const char *name,
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const void *value,
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size_t size);
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int
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SMBC_removexattr_ctx(SMBCCTX *context,
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const char *fname,
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const char *name);
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int
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SMBC_listxattr_ctx(SMBCCTX *context,
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const char *fname,
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char *list,
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size_t size);
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#endif
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