311 lines
7.6 KiB
C
311 lines
7.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2020, Microsoft Corporation.
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*
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* Author(s): Steve French <stfrench@microsoft.com>
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* David Howells <dhowells@redhat.com>
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*/
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#ifndef _FS_CONTEXT_H
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#define _FS_CONTEXT_H
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#include "cifsglob.h"
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#include <linux/parser.h>
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#include <linux/fs_parser.h>
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/* Log errors in fs_context (new mount api) but also in dmesg (old style) */
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#define cifs_errorf(fc, fmt, ...) \
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do { \
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errorf(fc, fmt, ## __VA_ARGS__); \
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cifs_dbg(VFS, fmt, ## __VA_ARGS__); \
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} while (0)
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enum smb_version {
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Smb_1 = 1,
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Smb_20,
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Smb_21,
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Smb_30,
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Smb_302,
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Smb_311,
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Smb_3any,
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Smb_default,
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Smb_version_err
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};
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enum {
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Opt_cache_loose,
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Opt_cache_strict,
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Opt_cache_none,
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Opt_cache_ro,
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Opt_cache_rw,
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Opt_cache_err
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};
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enum cifs_sec_param {
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Opt_sec_krb5,
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Opt_sec_krb5i,
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Opt_sec_krb5p,
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Opt_sec_ntlmsspi,
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Opt_sec_ntlmssp,
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Opt_sec_ntlmv2,
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Opt_sec_ntlmv2i,
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Opt_sec_none,
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Opt_sec_err
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};
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enum cifs_param {
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/* Mount options that take no arguments */
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Opt_user_xattr,
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Opt_forceuid,
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Opt_forcegid,
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Opt_noblocksend,
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Opt_noautotune,
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Opt_nolease,
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Opt_nosparse,
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Opt_hard,
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Opt_soft,
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Opt_perm,
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Opt_nodelete,
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Opt_mapposix,
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Opt_mapchars,
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Opt_nomapchars,
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Opt_sfu,
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Opt_nodfs,
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Opt_posixpaths,
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Opt_unix,
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Opt_nocase,
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Opt_brl,
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Opt_handlecache,
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Opt_forcemandatorylock,
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Opt_setuidfromacl,
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Opt_setuids,
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Opt_dynperm,
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Opt_intr,
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Opt_strictsync,
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Opt_serverino,
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Opt_rwpidforward,
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Opt_cifsacl,
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Opt_acl,
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Opt_locallease,
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Opt_sign,
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Opt_ignore_signature,
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Opt_seal,
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Opt_noac,
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Opt_fsc,
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Opt_mfsymlinks,
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Opt_multiuser,
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Opt_sloppy,
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Opt_nosharesock,
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Opt_persistent,
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Opt_resilient,
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Opt_tcp_nodelay,
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Opt_domainauto,
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Opt_rdma,
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Opt_modesid,
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Opt_rootfs,
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Opt_multichannel,
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Opt_compress,
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Opt_witness,
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/* Mount options which take numeric value */
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Opt_backupuid,
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Opt_backupgid,
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Opt_uid,
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Opt_cruid,
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Opt_gid,
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Opt_port,
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Opt_file_mode,
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Opt_dirmode,
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Opt_min_enc_offload,
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Opt_retrans,
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Opt_blocksize,
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Opt_rasize,
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Opt_rsize,
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Opt_wsize,
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Opt_actimeo,
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Opt_acdirmax,
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Opt_acregmax,
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Opt_closetimeo,
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Opt_echo_interval,
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Opt_max_credits,
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Opt_max_cached_dirs,
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Opt_snapshot,
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Opt_max_channels,
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Opt_handletimeout,
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/* Mount options which take string value */
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Opt_source,
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Opt_user,
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Opt_pass,
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Opt_ip,
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Opt_domain,
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Opt_srcaddr,
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Opt_iocharset,
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Opt_netbiosname,
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Opt_servern,
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Opt_ver,
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Opt_vers,
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Opt_sec,
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Opt_cache,
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/* Mount options to be ignored */
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Opt_ignore,
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Opt_err
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};
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struct smb3_fs_context {
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bool uid_specified;
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bool cruid_specified;
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bool gid_specified;
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bool sloppy;
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bool got_ip;
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bool got_version;
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bool got_rsize;
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bool got_wsize;
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bool got_bsize;
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unsigned short port;
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char *username;
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char *password;
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char *domainname;
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char *source;
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char *server_hostname;
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char *UNC;
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char *nodename;
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char workstation_name[CIFS_MAX_WORKSTATION_LEN];
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char *iocharset; /* local code page for mapping to and from Unicode */
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char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
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char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
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kuid_t cred_uid;
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kuid_t linux_uid;
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kgid_t linux_gid;
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kuid_t backupuid;
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kgid_t backupgid;
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umode_t file_mode;
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umode_t dir_mode;
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enum securityEnum sectype; /* sectype requested via mnt opts */
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bool sign; /* was signing requested via mnt opts? */
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bool ignore_signature:1;
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bool retry:1;
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bool intr:1;
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bool setuids:1;
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bool setuidfromacl:1;
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bool override_uid:1;
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bool override_gid:1;
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bool dynperm:1;
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bool noperm:1;
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bool nodelete:1;
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bool mode_ace:1;
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bool no_psx_acl:1; /* set if posix acl support should be disabled */
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bool cifs_acl:1;
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bool backupuid_specified; /* mount option backupuid is specified */
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bool backupgid_specified; /* mount option backupgid is specified */
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bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
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bool server_ino:1; /* use inode numbers from server ie UniqueId */
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bool direct_io:1;
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bool strict_io:1; /* strict cache behavior */
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bool cache_ro:1;
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bool cache_rw:1;
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bool remap:1; /* set to remap seven reserved chars in filenames */
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bool sfu_remap:1; /* remap seven reserved chars ala SFU */
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bool posix_paths:1; /* unset to not ask for posix pathnames. */
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bool no_linux_ext:1;
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bool linux_ext:1;
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bool sfu_emul:1;
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bool nullauth:1; /* attempt to authenticate with null user */
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bool nocase:1; /* request case insensitive filenames */
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bool nobrl:1; /* disable sending byte range locks to srv */
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bool nohandlecache:1; /* disable caching dir handles if srvr probs */
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bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
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bool seal:1; /* request transport encryption on share */
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bool nodfs:1; /* Do not request DFS, even if available */
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bool local_lease:1; /* check leases only on local system, not remote */
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bool noblocksnd:1;
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bool noautotune:1;
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bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
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bool no_lease:1; /* disable requesting leases */
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bool no_sparse:1; /* do not attempt to set files sparse */
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bool fsc:1; /* enable fscache */
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bool mfsymlinks:1; /* use Minshall+French Symlinks */
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bool multiuser:1;
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bool rwpidforward:1; /* pid forward for read/write operations */
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bool nosharesock:1;
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bool persistent:1;
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bool nopersistent:1;
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bool resilient:1; /* noresilient not required since not fored for CA */
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bool domainauto:1;
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bool rdma:1;
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bool multichannel:1;
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bool use_client_guid:1;
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/* reuse existing guid for multichannel */
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u8 client_guid[SMB2_CLIENT_GUID_SIZE];
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unsigned int bsize;
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unsigned int rasize;
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unsigned int rsize;
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unsigned int wsize;
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unsigned int min_offload;
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unsigned int retrans;
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bool sockopt_tcp_nodelay:1;
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/* attribute cache timemout for files and directories in jiffies */
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unsigned long acregmax;
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unsigned long acdirmax;
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/* timeout for deferred close of files in jiffies */
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unsigned long closetimeo;
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struct smb_version_operations *ops;
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struct smb_version_values *vals;
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char *prepath;
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struct sockaddr_storage dstaddr; /* destination address */
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struct sockaddr_storage srcaddr; /* allow binding to a local IP */
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struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */
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unsigned int echo_interval; /* echo interval in secs */
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__u64 snapshot_time; /* needed for timewarp tokens */
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__u32 handle_timeout; /* persistent and durable handle timeout in ms */
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unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
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unsigned int max_channels;
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unsigned int max_cached_dirs;
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__u16 compression; /* compression algorithm 0xFFFF default 0=disabled */
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bool rootfs:1; /* if it's a SMB root file system */
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bool witness:1; /* use witness protocol */
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char *leaf_fullpath;
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struct cifs_ses *dfs_root_ses;
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bool dfs_automount:1; /* set for dfs automount only */
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};
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extern const struct fs_parameter_spec smb3_fs_parameters[];
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extern int smb3_init_fs_context(struct fs_context *fc);
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extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx);
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extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx);
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static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc)
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{
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return fc->fs_private;
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}
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extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx);
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extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb);
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/*
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* max deferred close timeout (jiffies) - 2^30
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*/
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#define SMB3_MAX_DCLOSETIMEO (1 << 30)
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#define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */
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#define MAX_CACHED_FIDS 16
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extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp);
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extern struct mutex cifs_mount_mutex;
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static inline void cifs_mount_lock(void)
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{
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mutex_lock(&cifs_mount_mutex);
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}
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static inline void cifs_mount_unlock(void)
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{
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mutex_unlock(&cifs_mount_mutex);
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}
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#endif
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