Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
new file mode 100644
index 0000000..69aff1a7
--- /dev/null
+++ b/fs/cifs/cifsglob.h
@@ -0,0 +1,439 @@
+/*
+ * fs/cifs/cifsglob.h
+ *
+ * Copyright (C) International Business Machines Corp., 2002,2003
+ * Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU Lesser General Public License for more details.
+ *
+ */
+#include <linux/in.h>
+#include <linux/in6.h>
+#include "cifs_fs_sb.h"
+/*
+ * The sizes of various internal tables and strings
+ */
+#define MAX_UID_INFO 16
+#define MAX_SES_INFO 2
+#define MAX_TCON_INFO 4
+
+#define MAX_TREE_SIZE 2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1
+#define MAX_SERVER_SIZE 15
+#define MAX_SHARE_SIZE 64 /* used to be 20 - this should still be enough */
+#define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null
+ termination then *2 for unicode versions */
+#define MAX_PASSWORD_SIZE 16
+
+#define CIFS_MIN_RCV_POOL 4
+
+/*
+ * MAX_REQ is the maximum number of requests that WE will send
+ * on one socket concurently. It also matches the most common
+ * value of max multiplex returned by servers. We may
+ * eventually want to use the negotiated value (in case
+ * future servers can handle more) when we are more confident that
+ * we will not have problems oveloading the socket with pending
+ * write data.
+ */
+#define CIFS_MAX_REQ 50
+
+#define SERVER_NAME_LENGTH 15
+#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
+
+/* used to define string lengths for reversing unicode strings */
+/* (256+1)*2 = 514 */
+/* (max path length + 1 for null) * 2 for unicode */
+#define MAX_NAME 514
+
+#include "cifspdu.h"
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef XATTR_DOS_ATTRIB
+#define XATTR_DOS_ATTRIB "user.DOSATTRIB"
+#endif
+
+/*
+ * This information is kept on every Server we know about.
+ *
+ * Some things to note:
+ *
+ */
+#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
+
+/*
+ * CIFS vfs client Status information (based on what we know.)
+ */
+
+ /* associated with each tcp and smb session */
+enum statusEnum {
+ CifsNew = 0,
+ CifsGood,
+ CifsExiting,
+ CifsNeedReconnect
+};
+
+enum securityEnum {
+ NTLM = 0, /* Legacy NTLM012 auth with NTLM hash */
+ NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */
+ RawNTLMSSP, /* NTLMSSP without SPNEGO */
+ NTLMSSP, /* NTLMSSP via SPNEGO */
+ Kerberos /* Kerberos via SPNEGO */
+};
+
+enum protocolEnum {
+ IPV4 = 0,
+ IPV6,
+ SCTP
+ /* Netbios frames protocol not supported at this time */
+};
+
+/*
+ *****************************************************************
+ * Except the CIFS PDUs themselves all the
+ * globally interesting structs should go here
+ *****************************************************************
+ */
+
+struct TCP_Server_Info {
+ char server_Name[SERVER_NAME_LEN_WITH_NULL]; /* 15 chars + X'20'in 16th */
+ char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2]; /* Unicode version of server_Name */
+ struct socket *ssocket;
+ union {
+ struct sockaddr_in sockAddr;
+ struct sockaddr_in6 sockAddr6;
+ } addr;
+ wait_queue_head_t response_q;
+ wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
+ struct list_head pending_mid_q;
+ void *Server_NlsInfo; /* BB - placeholder for future NLS info */
+ unsigned short server_codepage; /* codepage for the server */
+ unsigned long ip_address; /* IP addr for the server if known */
+ enum protocolEnum protocolType;
+ char versionMajor;
+ char versionMinor;
+ unsigned svlocal:1; /* local server or remote */
+ atomic_t socketUseCount; /* number of open cifs sessions on socket */
+ atomic_t inFlight; /* number of requests on the wire to server */
+ enum statusEnum tcpStatus; /* what we think the status is */
+ struct semaphore tcpSem;
+ struct task_struct *tsk;
+ char server_GUID[16];
+ char secMode;
+ enum securityEnum secType;
+ unsigned int maxReq; /* Clients should submit no more */
+ /* than maxReq distinct unanswered SMBs to the server when using */
+ /* multiplexed reads or writes */
+ unsigned int maxBuf; /* maxBuf specifies the maximum */
+ /* message size the server can send or receive for non-raw SMBs */
+ unsigned int maxRw; /* maxRw specifies the maximum */
+ /* message size the server can send or receive for */
+ /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
+ char sessid[4]; /* unique token id for this session */
+ /* (returned on Negotiate */
+ int capabilities; /* allow selective disabling of caps by smb sess */
+ __u16 timeZone;
+ char cryptKey[CIFS_CRYPTO_KEY_SIZE];
+ char workstation_RFC1001_name[16]; /* 16th byte is always zero */
+};
+
+/*
+ * The following is our shortcut to user information. We surface the uid,
+ * and name. We always get the password on the fly in case it
+ * has changed. We also hang a list of sessions owned by this user off here.
+ */
+struct cifsUidInfo {
+ struct list_head userList;
+ struct list_head sessionList; /* SMB sessions for this user */
+ uid_t linux_uid;
+ char user[MAX_USERNAME_SIZE + 1]; /* ascii name of user */
+ /* BB may need ptr or callback for PAM or WinBind info */
+};
+
+/*
+ * Session structure. One of these for each uid session with a particular host
+ */
+struct cifsSesInfo {
+ struct list_head cifsSessionList;
+ struct semaphore sesSem;
+ struct cifsUidInfo *uidInfo; /* pointer to user info */
+ struct TCP_Server_Info *server; /* pointer to server info */
+ atomic_t inUse; /* # of mounts (tree connections) on this ses */
+ enum statusEnum status;
+ __u32 sequence_number; /* needed for CIFS PDU signature */
+ __u16 ipc_tid; /* special tid for connection to IPC share */
+ __u16 flags;
+ char mac_signing_key[CIFS_SESSION_KEY_SIZE + 16];
+ char *serverOS; /* name of operating system underlying the server */
+ char *serverNOS; /* name of network operating system that the server is running */
+ char *serverDomain; /* security realm of server */
+ int Suid; /* remote smb uid */
+ uid_t linux_uid; /* local Linux uid */
+ int capabilities;
+ char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for tcp names - will ipv6 and sctp addresses fit here?? */
+ char userName[MAX_USERNAME_SIZE + 1];
+ char domainName[MAX_USERNAME_SIZE + 1];
+ char * password;
+};
+/* session flags */
+#define CIFS_SES_NT4 1
+
+/*
+ * there is one of these for each connection to a resource on a particular
+ * session
+ */
+struct cifsTconInfo {
+ struct list_head cifsConnectionList;
+ struct list_head openFileList;
+ struct semaphore tconSem;
+ struct cifsSesInfo *ses; /* pointer to session associated with */
+ char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource (in ASCII not UTF) */
+ char *nativeFileSystem;
+ __u16 tid; /* The 2 byte tree id */
+ __u16 Flags; /* optional support bits */
+ enum statusEnum tidStatus;
+ atomic_t useCount; /* how many mounts (explicit or implicit) to this share */
+#ifdef CONFIG_CIFS_STATS
+ atomic_t num_smbs_sent;
+ atomic_t num_writes;
+ atomic_t num_reads;
+ atomic_t num_oplock_brks;
+ atomic_t num_opens;
+ atomic_t num_deletes;
+ atomic_t num_mkdirs;
+ atomic_t num_rmdirs;
+ atomic_t num_renames;
+ atomic_t num_t2renames;
+ __u64 bytes_read;
+ __u64 bytes_written;
+ spinlock_t stat_lock;
+#endif
+ FILE_SYSTEM_DEVICE_INFO fsDevInfo;
+ FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if file system name truncated */
+ FILE_SYSTEM_UNIX_INFO fsUnixInfo;
+ unsigned retry:1;
+ /* BB add field for back pointer to sb struct? */
+};
+
+/*
+ * This info hangs off the cifsFileInfo structure. This is used to track
+ * byte stream locks on the file
+ */
+struct cifsLockInfo {
+ struct cifsLockInfo *next;
+ int start;
+ int length;
+ int type;
+};
+
+/*
+ * One of these for each open instance of a file
+ */
+struct cifs_search_info {
+ loff_t index_of_last_entry;
+ __u16 entries_in_buffer;
+ __u16 info_level;
+ __u32 resume_key;
+ char * ntwrk_buf_start;
+ char * srch_entries_start;
+ char * presume_name;
+ unsigned int resume_name_len;
+ unsigned endOfSearch:1;
+ unsigned emptyDir:1;
+ unsigned unicode:1;
+};
+
+struct cifsFileInfo {
+ struct list_head tlist; /* pointer to next fid owned by tcon */
+ struct list_head flist; /* next fid (file instance) for this inode */
+ unsigned int uid; /* allows finding which FileInfo structure */
+ __u32 pid; /* process id who opened file */
+ __u16 netfid; /* file id from remote */
+ /* BB add lock scope info here if needed */ ;
+ /* lock scope id (0 if none) */
+ struct file * pfile; /* needed for writepage */
+ struct inode * pInode; /* needed for oplock break */
+ unsigned closePend:1; /* file is marked to close */
+ unsigned invalidHandle:1; /* file closed via session abend */
+ struct semaphore fh_sem; /* prevents reopen race after dead ses*/
+ char * search_resume_name; /* BB removeme BB */
+ unsigned int resume_name_length; /* BB removeme - field renamed and moved BB */
+ struct cifs_search_info srch_inf;
+};
+
+/*
+ * One of these for each file inode
+ */
+
+struct cifsInodeInfo {
+ struct list_head lockList;
+ /* BB add in lists for dirty pages - i.e. write caching info for oplock */
+ struct list_head openFileList;
+ int write_behind_rc;
+ __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
+ atomic_t inUse; /* num concurrent users (local openers cifs) of file*/
+ unsigned long time; /* jiffies of last update/check of inode */
+ unsigned clientCanCacheRead:1; /* read oplock */
+ unsigned clientCanCacheAll:1; /* read and writebehind oplock */
+ unsigned oplockPending:1;
+ struct inode vfs_inode;
+};
+
+static inline struct cifsInodeInfo *
+CIFS_I(struct inode *inode)
+{
+ return container_of(inode, struct cifsInodeInfo, vfs_inode);
+}
+
+static inline struct cifs_sb_info *
+CIFS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+
+/* one of these for every pending CIFS request to the server */
+struct mid_q_entry {
+ struct list_head qhead; /* mids waiting on reply from this server */
+ __u16 mid; /* multiplex id */
+ __u16 pid; /* process id */
+ __u32 sequence_number; /* for CIFS signing */
+ __u16 command; /* smb command code */
+ struct timeval when_sent; /* time when smb sent */
+ struct cifsSesInfo *ses; /* smb was sent to this server */
+ struct task_struct *tsk; /* task waiting for response */
+ struct smb_hdr *resp_buf; /* response buffer */
+ int midState; /* wish this were enum but can not pass to wait_event */
+};
+
+struct oplock_q_entry {
+ struct list_head qhead;
+ struct inode * pinode;
+ struct cifsTconInfo * tcon;
+ __u16 netfid;
+};
+
+#define MID_FREE 0
+#define MID_REQUEST_ALLOCATED 1
+#define MID_REQUEST_SUBMITTED 2
+#define MID_RESPONSE_RECEIVED 4
+#define MID_RETRY_NEEDED 8 /* session closed while this request out */
+#define MID_NO_RESP_NEEDED 0x10
+#define MID_SMALL_BUFFER 0x20 /* 112 byte response buffer instead of 4K */
+
+/*
+ *****************************************************************
+ * All constants go here
+ *****************************************************************
+ */
+
+#define UID_HASH (16)
+
+/*
+ * Note that ONE module should define _DECLARE_GLOBALS_HERE to cause the
+ * following to be declared.
+ */
+
+/****************************************************************************
+ * Locking notes. All updates to global variables and lists should be
+ * protected by spinlocks or semaphores.
+ *
+ * Spinlocks
+ * ---------
+ * GlobalMid_Lock protects:
+ * list operations on pending_mid_q and oplockQ
+ * updates to XID counters, multiplex id and SMB sequence numbers
+ * GlobalSMBSesLock protects:
+ * list operations on tcp and SMB session lists and tCon lists
+ * f_owner.lock protects certain per file struct operations
+ * mapping->page_lock protects certain per page operations
+ *
+ * Semaphores
+ * ----------
+ * sesSem operations on smb session
+ * tconSem operations on tree connection
+ * fh_sem file handle reconnection operations
+ *
+ ****************************************************************************/
+
+#ifdef DECLARE_GLOBALS_HERE
+#define GLOBAL_EXTERN
+#else
+#define GLOBAL_EXTERN extern
+#endif
+
+/*
+ * The list of servers that did not respond with NT LM 0.12.
+ * This list helps improve performance and eliminate the messages indicating
+ * that we had a communications error talking to the server in this list.
+ */
+GLOBAL_EXTERN struct servers_not_supported *NotSuppList; /*@z4a */
+
+/*
+ * The following is a hash table of all the users we know about.
+ */
+GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH];
+
+GLOBAL_EXTERN struct list_head GlobalServerList; /* BB not implemented yet */
+GLOBAL_EXTERN struct list_head GlobalSMBSessionList;
+GLOBAL_EXTERN struct list_head GlobalTreeConnectionList;
+GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */
+
+GLOBAL_EXTERN struct list_head GlobalOplock_Q;
+
+/*
+ * Global transaction id (XID) information
+ */
+GLOBAL_EXTERN unsigned int GlobalCurrentXid; /* protected by GlobalMid_Sem */
+GLOBAL_EXTERN unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Sem */
+GLOBAL_EXTERN unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Sem */
+GLOBAL_EXTERN spinlock_t GlobalMid_Lock; /* protects above and list operations */
+ /* on midQ entries */
+GLOBAL_EXTERN char Local_System_Name[15];
+
+/*
+ * Global counters, updated atomically
+ */
+GLOBAL_EXTERN atomic_t sesInfoAllocCount;
+GLOBAL_EXTERN atomic_t tconInfoAllocCount;
+GLOBAL_EXTERN atomic_t tcpSesAllocCount;
+GLOBAL_EXTERN atomic_t tcpSesReconnectCount;
+GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
+
+/* Various Debug counters to remove someday (BB) */
+GLOBAL_EXTERN atomic_t bufAllocCount;
+GLOBAL_EXTERN atomic_t smBufAllocCount;
+GLOBAL_EXTERN atomic_t midCount;
+
+/* Misc globals */
+GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions
+ to be established on existing mount if we
+ have the uid/password or Kerberos credential
+ or equivalent for current user */
+GLOBAL_EXTERN unsigned int oplockEnabled;
+GLOBAL_EXTERN unsigned int experimEnabled;
+GLOBAL_EXTERN unsigned int lookupCacheEnabled;
+GLOBAL_EXTERN unsigned int extended_security; /* if on, session setup sent
+ with more secure ntlmssp2 challenge/resp */
+GLOBAL_EXTERN unsigned int ntlmv2_support; /* better optional password hash */
+GLOBAL_EXTERN unsigned int sign_CIFS_PDUs; /* enable smb packet signing */
+GLOBAL_EXTERN unsigned int linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
+GLOBAL_EXTERN unsigned int CIFSMaxBufSize; /* max size not including hdr */
+GLOBAL_EXTERN unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
+GLOBAL_EXTERN unsigned int cifs_min_small; /* min size of small buf pool */
+GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
+