Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (31 commits) [CIFS] Remove redundant test [CIFS] make sure that DFS pathnames are properly formed Remove an already-checked error condition in SendReceiveBlockingLock Streamline SendReceiveBlockingLock: Use "goto out:" in an error condition Streamline SendReceiveBlockingLock: Use "goto out:" in an error condition [CIFS] Streamline SendReceive[2] by using "goto out:" in an error condition Slightly streamline SendReceive[2] Check the return value of cifs_sign_smb[2] [CIFS] Cleanup: Move the check for too large R/W requests [CIFS] Slightly simplify wait_for_free_request(), remove an unnecessary "else" branch Simplify allocate_mid() slightly: Remove some unnecessary "else" branches [CIFS] In SendReceive, move consistency check out of the mutexed region cifs: store password in tcon cifs: have calc_lanman_hash take more granular args cifs: zero out session password before freeing it cifs: fix wait_for_response to time out sleeping processes correctly [CIFS] Can not mount with prefixpath if root directory of share is inaccessible [CIFS] various minor cleanups pointed out by checkpatch script [CIFS] fix typo [CIFS] remove sparse warning ... Fix trivial conflict in fs/cifs/cifs_fs_sb.h due to comment changes for the CIFS_MOUNT_xyz bit definitions between cifs updates and security updates.
2026-05-01 15:00:59 -07:00 · 2008-12-28 12:37:14 -08:00
parent 1d248b2593 359d67d6ad
commit 54a696bd07
22 changed files with 823 additions and 611 deletions
@@ -36,7 +36,9 @@ Miklos Szeredi
 Kazeon team for various fixes especially for 2.4 version.
 Asser Ferno (Change Notify support)
 Shaggy (Dave Kleikamp) for inumerable small fs suggestions and some good cleanup
+Gunter Kukkukk (testing and suggestions for support of old servers)
 Igor Mammedov (DFS support)
+Jeff Layton (many, many fixes, as well as great work on the cifs Kerberos code)

 Test case and Bug Report contributors
 -------------------------------------
@@ -1,3 +1,12 @@
+Version 1.56
+------------
+Add "forcemandatorylock" mount option to allow user to use mandatory
+rather than posix (advisory) byte range locks, even though server would
+support posix byte range locks.  Fix query of root inode when prefixpath
+specified and user does not have access to query information about the
+top of the share.  Fix problem in 2.6.28 resolving DFS paths to
+Samba servers (worked to Windows).
+
 Version 1.55
 ------------
 Various fixes to make delete of open files behavior more predictable
@@ -463,9 +463,19 @@ A partial list of the supported mount options follows:
 		with cifs style mandatory byte range locks (and most
 		cifs servers do not yet support requesting advisory
 		byte range locks).
+ forcemandatorylock Even if the server supports posix (advisory) byte range
+		locking, send only mandatory lock requests.  For some
+		(presumably rare) applications, originally coded for
+		DOS/Windows, which require Windows style mandatory byte range
+		locking, they may be able to take advantage of this option,
+		forcing the cifs client to only send mandatory locks
+		even if the cifs server would support posix advisory locks.
+		"forcemand" is accepted as a shorter form of this mount
+		option.
 nodfs          Disable DFS (global name space support) even if the
 		server claims to support it.  This can help work around
-		a problem with parsing of DFS paths with Samba 3.0.24 server.
+		a problem with parsing of DFS paths with Samba server
+		versions 3.0.24 and 3.0.25.
 remount        remount the share (often used to change from ro to rw mounts
 	        or vice versa)
 cifsacl        Report mode bits (e.g. on stat) based on the Windows ACL for
@@ -122,7 +122,7 @@ static char *compose_mount_options(const char *sb_mountdata,
 				   char **devname)
 {
 	int rc;
-	char *mountdata;
+	char *mountdata = NULL;
 	int md_len;
 	char *tkn_e;
 	char *srvIP = NULL;
@@ -136,10 +136,9 @@ static char *compose_mount_options(const char *sb_mountdata,
 	*devname = cifs_get_share_name(ref->node_name);
 	rc = dns_resolve_server_name_to_ip(*devname, &srvIP);
 	if (rc != 0) {
-		cERROR(1, ("%s: Failed to resolve server part of %s to IP",
-			  __func__, *devname));
-		mountdata = ERR_PTR(rc);
-		goto compose_mount_options_out;
+		cERROR(1, ("%s: Failed to resolve server part of %s to IP: %d",
+			  __func__, *devname, rc));;
+		goto compose_mount_options_err;
 	}
 	/* md_len = strlen(...) + 12 for 'sep+prefixpath='
 	 * assuming that we have 'unc=' and 'ip=' in
@@ -149,8 +148,8 @@ static char *compose_mount_options(const char *sb_mountdata,
 		strlen(ref->node_name) + 12;
 	mountdata = kzalloc(md_len+1, GFP_KERNEL);
 	if (mountdata == NULL) {
-		mountdata = ERR_PTR(-ENOMEM);
-		goto compose_mount_options_out;
+		rc = -ENOMEM;
+		goto compose_mount_options_err;
 	}

 	/* copy all options except of unc,ip,prefixpath */
@@ -197,18 +196,32 @@ static char *compose_mount_options(const char *sb_mountdata,

 	/* find & copy prefixpath */
 	tkn_e = strchr(ref->node_name + 2, '\\');
-	if (tkn_e == NULL) /* invalid unc, missing share name*/
-		goto compose_mount_options_out;
+	if (tkn_e == NULL) {
+		/* invalid unc, missing share name*/
+		rc = -EINVAL;
+		goto compose_mount_options_err;
+	}

+	/*
+	 * this function gives us a path with a double backslash prefix. We
+	 * require a single backslash for DFS. Temporarily increment fullpath
+	 * to put it in the proper form and decrement before freeing it.
+	 */
 	fullpath = build_path_from_dentry(dentry);
+	if (!fullpath) {
+		rc = -ENOMEM;
+		goto compose_mount_options_err;
+	}
+	++fullpath;
 	tkn_e = strchr(tkn_e + 1, '\\');
-	if (tkn_e || strlen(fullpath) - (ref->path_consumed)) {
+	if (tkn_e || (strlen(fullpath) - ref->path_consumed)) {
 		strncat(mountdata, &sep, 1);
 		strcat(mountdata, "prefixpath=");
 		if (tkn_e)
 			strcat(mountdata, tkn_e + 1);
-		strcat(mountdata, fullpath + (ref->path_consumed));
+		strcat(mountdata, fullpath + ref->path_consumed);
 	}
+	--fullpath;
 	kfree(fullpath);

 	/*cFYI(1,("%s: parent mountdata: %s", __func__,sb_mountdata));*/
@@ -217,6 +230,11 @@ static char *compose_mount_options(const char *sb_mountdata,
 compose_mount_options_out:
 	kfree(srvIP);
 	return mountdata;
+
+compose_mount_options_err:
+	kfree(mountdata);
+	mountdata = ERR_PTR(rc);
+	goto compose_mount_options_out;
 }


@@ -309,13 +327,19 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
 		goto out_err;
 	}

+	/*
+	 * The MSDFS spec states that paths in DFS referral requests and
+	 * responses must be prefixed by a single '\' character instead of
+	 * the double backslashes usually used in the UNC. This function
+	 * gives us the latter, so we must adjust the result.
+	 */
 	full_path = build_path_from_dentry(dentry);
 	if (full_path == NULL) {
 		rc = -ENOMEM;
 		goto out_err;
 	}

-	rc = get_dfs_path(xid, ses , full_path, cifs_sb->local_nls,
+	rc = get_dfs_path(xid, ses , full_path + 1, cifs_sb->local_nls,
 		&num_referrals, &referrals,
 		cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);

@@ -20,7 +20,7 @@

 #define CIFS_MOUNT_NO_PERM      1 /* do not do client vfs_perm check */
 #define CIFS_MOUNT_SET_UID      2 /* set current's euid in create etc. */
-#define CIFS_MOUNT_SERVER_INUM  4 /* inode numbers from uniqueid from server */
+#define CIFS_MOUNT_SERVER_INUM  4 /* inode numbers from uniqueid from server  */
 #define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */
 #define CIFS_MOUNT_NO_XATTR     0x10  /* if set - disable xattr support       */
 #define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames   */
@@ -30,7 +30,8 @@
 #define CIFS_MOUNT_CIFS_ACL     0x200 /* send ACL requests to non-POSIX srv   */
 #define CIFS_MOUNT_OVERR_UID    0x400 /* override uid returned from server    */
 #define CIFS_MOUNT_OVERR_GID    0x800 /* override gid returned from server    */
-#define CIFS_MOUNT_DYNPERM	0x1000 /* allow in-memory only mode setting */
+#define CIFS_MOUNT_DYNPERM      0x1000 /* allow in-memory only mode setting   */
+#define CIFS_MOUNT_NOPOSIXBRL   0x2000 /* mandatory not posix byte range lock */

 struct cifs_sb_info {
 	struct cifsTconInfo *tcon;	/* primary mount */
@@ -37,7 +37,7 @@

 extern void mdfour(unsigned char *out, unsigned char *in, int n);
 extern void E_md4hash(const unsigned char *passwd, unsigned char *p16);
-extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
+extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 		       unsigned char *p24);

 static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
@@ -280,25 +280,22 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *ses,
 }

 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key)
+void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
+			char *lnm_session_key)
 {
 	int i;
 	char password_with_pad[CIFS_ENCPWD_SIZE];

-	if (ses->server == NULL)
-		return;
-
 	memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
-	if (ses->password)
-		strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
+	if (password)
+		strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE);

-	if ((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0)
-		if (extended_security & CIFSSEC_MAY_PLNTXT) {
-			memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE);
-			memcpy(lnm_session_key, password_with_pad,
-				CIFS_ENCPWD_SIZE);
-			return;
-		}
+	if (!encrypt && extended_security & CIFSSEC_MAY_PLNTXT) {
+		memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE);
+		memcpy(lnm_session_key, password_with_pad,
+			CIFS_ENCPWD_SIZE);
+		return;
+	}

 	/* calculate old style session key */
 	/* calling toupper is less broken than repeatedly
@@ -314,7 +311,8 @@ void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key)
 	for (i = 0; i < CIFS_ENCPWD_SIZE; i++)
 		password_with_pad[i] = toupper(password_with_pad[i]);

-	SMBencrypt(password_with_pad, ses->server->cryptKey, lnm_session_key);
+	SMBencrypt(password_with_pad, cryptkey, lnm_session_key);
+
 	/* clear password before we return/free memory */
 	memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
 }
@@ -26,7 +26,8 @@
 extern void mdfour(unsigned char *out, unsigned char *in, int n);
 /* smbdes.c */
 extern void E_P16(unsigned char *p14, unsigned char *p16);
-extern void E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24);
+extern void E_P24(unsigned char *p21, const unsigned char *c8,
+		  unsigned char *p24);



@@ -66,7 +66,9 @@ unsigned int sign_CIFS_PDUs = 1;
 extern struct task_struct *oplockThread; /* remove sparse warning */
 struct task_struct *oplockThread = NULL;
 /* extern struct task_struct * dnotifyThread; remove sparse warning */
+#ifdef CONFIG_CIFS_EXPERIMENTAL
 static struct task_struct *dnotifyThread = NULL;
+#endif
 static const struct super_operations cifs_super_ops;
 unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
 module_param(CIFSMaxBufSize, int, 0);
@@ -337,39 +339,58 @@ static int
 cifs_show_options(struct seq_file *s, struct vfsmount *m)
 {
 	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *tcon;
+	struct TCP_Server_Info *server;

 	cifs_sb = CIFS_SB(m->mnt_sb);

 	if (cifs_sb) {
-		if (cifs_sb->tcon) {
-/* BB add prepath to mount options displayed */
+		tcon = cifs_sb->tcon;
+		if (tcon) {
 			seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName);
-			if (cifs_sb->tcon->ses) {
-				if (cifs_sb->tcon->ses->userName)
+			if (tcon->ses) {
+				if (tcon->ses->userName)
 					seq_printf(s, ",username=%s",
-					   cifs_sb->tcon->ses->userName);
-				if (cifs_sb->tcon->ses->domainName)
+					   tcon->ses->userName);
+				if (tcon->ses->domainName)
 					seq_printf(s, ",domain=%s",
-					   cifs_sb->tcon->ses->domainName);
+					   tcon->ses->domainName);
+				server = tcon->ses->server;
+				if (server) {
+					seq_printf(s, ",addr=");
+					switch (server->addr.sockAddr6.
+						sin6_family) {
+					case AF_INET6:
+						seq_printf(s, NIP6_FMT,
+							   NIP6(server->addr.sockAddr6.sin6_addr));
+						break;
+					case AF_INET:
+						seq_printf(s, NIPQUAD_FMT,
+							   NIPQUAD(server->addr.sockAddr.sin_addr.s_addr));
+						break;
+					}
+				}
 			}
 			if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) ||
-			   !(cifs_sb->tcon->unix_ext))
+			   !(tcon->unix_ext))
 				seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
 			if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) ||
-			   !(cifs_sb->tcon->unix_ext))
+			   !(tcon->unix_ext))
 				seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
-			if (!cifs_sb->tcon->unix_ext) {
+			if (!tcon->unix_ext) {
 				seq_printf(s, ",file_mode=0%o,dir_mode=0%o",
 					   cifs_sb->mnt_file_mode,
 					   cifs_sb->mnt_dir_mode);
 			}
-			if (cifs_sb->tcon->seal)
+			if (tcon->seal)
 				seq_printf(s, ",seal");
-			if (cifs_sb->tcon->nocase)
+			if (tcon->nocase)
 				seq_printf(s, ",nocase");
-			if (cifs_sb->tcon->retry)
+			if (tcon->retry)
 				seq_printf(s, ",hard");
 		}
+		if (cifs_sb->prepath)
+			seq_printf(s, ",prepath=%s", cifs_sb->prepath);
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
 			seq_printf(s, ",posixpaths");
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
@@ -417,9 +438,8 @@ int cifs_xquota_set(struct super_block *sb, int quota_type, qid_t qid,
 	xid = GetXid();
 	if (pTcon) {
 		cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
-	} else {
+	} else
 		rc = -EIO;
-	}

 	FreeXid(xid);
 	return rc;
@@ -441,9 +461,8 @@ int cifs_xquota_get(struct super_block *sb, int quota_type, qid_t qid,
 	xid = GetXid();
 	if (pTcon) {
 		cFYI(1, ("set type: 0x%x id: %d", quota_type, qid));
-	} else {
+	} else
 		rc = -EIO;
-	}

 	FreeXid(xid);
 	return rc;
@@ -464,9 +483,8 @@ int cifs_xstate_set(struct super_block *sb, unsigned int flags, int operation)
 	xid = GetXid();
 	if (pTcon) {
 		cFYI(1, ("flags: 0x%x operation: 0x%x", flags, operation));
-	} else {
+	} else
 		rc = -EIO;
-	}

 	FreeXid(xid);
 	return rc;
@@ -479,17 +497,16 @@ int cifs_xstate_get(struct super_block *sb, struct fs_quota_stat *qstats)
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifsTconInfo *pTcon;

-	if (cifs_sb) {
+	if (cifs_sb)
 		pTcon = cifs_sb->tcon;
-	} else {
+	else
 		return -EIO;
-	}
+
 	xid = GetXid();
 	if (pTcon) {
 		cFYI(1, ("pqstats %p", qstats));
-	} else {
+	} else
 		rc = -EIO;
-	}

 	FreeXid(xid);
 	return rc;
@@ -1029,6 +1046,7 @@ static int cifs_oplock_thread(void *dummyarg)
 	return 0;
 }

+#ifdef CONFIG_CIFS_EXPERIMENTAL
 static int cifs_dnotify_thread(void *dummyarg)
 {
 	struct list_head *tmp;
@@ -1054,6 +1072,7 @@ static int cifs_dnotify_thread(void *dummyarg)

 	return 0;
 }
+#endif

 static int __init
 init_cifs(void)
@@ -1131,16 +1150,20 @@ init_cifs(void)
 		goto out_unregister_dfs_key_type;
 	}

+#ifdef CONFIG_CIFS_EXPERIMENTAL
 	dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
 	if (IS_ERR(dnotifyThread)) {
 		rc = PTR_ERR(dnotifyThread);
 		cERROR(1, ("error %d create dnotify thread", rc));
 		goto out_stop_oplock_thread;
 	}
+#endif

 	return 0;

+#ifdef CONFIG_CIFS_EXPERIMENTAL
 out_stop_oplock_thread:
+#endif
 	kthread_stop(oplockThread);
 out_unregister_dfs_key_type:
 #ifdef CONFIG_CIFS_DFS_UPCALL
@@ -1179,8 +1202,10 @@ exit_cifs(void)
 	cifs_destroy_inodecache();
 	cifs_destroy_mids();
 	cifs_destroy_request_bufs();
-	kthread_stop(oplockThread);
+#ifdef CONFIG_CIFS_EXPERIMENTAL
 	kthread_stop(dnotifyThread);
+#endif
+	kthread_stop(oplockThread);
 }

 MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");
@@ -101,5 +101,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* EXPERIMENTAL */

-#define CIFS_VERSION   "1.55"
+#define CIFS_VERSION   "1.56"
 #endif				/* _CIFSFS_H */
@@ -47,7 +47,11 @@
 */
 #define CIFS_MAX_REQ 50

-#define SERVER_NAME_LENGTH 15
+#define RFC1001_NAME_LEN 15
+#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
+
+/* currently length of NIP6_FMT */
+#define SERVER_NAME_LENGTH 40
 #define SERVER_NAME_LEN_WITH_NULL     (SERVER_NAME_LENGTH + 1)

 /* used to define string lengths for reversing unicode strings */
@@ -125,8 +129,7 @@ struct TCP_Server_Info {
 	struct list_head smb_ses_list;
 	int srv_count; /* reference counter */
 	/* 15 character server name + 0x20 16th byte indicating type = srv */
-	char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
-	char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
+	char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
 	char *hostname; /* hostname portion of UNC string */
 	struct socket *ssocket;
 	union {
@@ -151,7 +154,7 @@ struct TCP_Server_Info {
 	atomic_t num_waiters;   /* blocked waiting to get in sendrecv */
 #endif
 	enum statusEnum tcpStatus; /* what we think the status is */
-	struct semaphore tcpSem;
+	struct mutex srv_mutex;
 	struct task_struct *tsk;
 	char server_GUID[16];
 	char secMode;
@@ -171,7 +174,7 @@ struct TCP_Server_Info {
 	__u16 CurrentMid;         /* multiplex id - rotating counter */
 	char cryptKey[CIFS_CRYPTO_KEY_SIZE];
 	/* 16th byte of RFC1001 workstation name is always null */
-	char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
+	char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
 	__u32 sequence_number; /* needed for CIFS PDU signature */
 	struct mac_key mac_signing_key;
 	char ntlmv2_hash[16];
@@ -239,6 +242,7 @@ struct cifsTconInfo {
 	struct cifsSesInfo *ses;	/* pointer to session associated with */
 	char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
 	char *nativeFileSystem;
+	char *password;		/* for share-level security */
 	__u16 tid;		/* The 2 byte tree id */
 	__u16 Flags;		/* optional support bits */
 	enum statusEnum tidStatus;
@@ -422,7 +426,6 @@ struct mid_q_entry {
 	unsigned long when_sent; /* time when smb send finished */
 	unsigned long when_received; /* when demux complete (taken off wire) */
 #endif
-	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 */
@@ -1922,7 +1922,7 @@ typedef struct smb_com_transaction2_get_dfs_refer_req {
 /* DFS server target type */
 #define DFS_TYPE_LINK 0x0000  /* also for sysvol targets */
 #define DFS_TYPE_ROOT 0x0001
- 
+
 /* Referral Entry Flags */
 #define DFS_NAME_LIST_REF 0x0200

@@ -330,7 +330,8 @@ extern void CalcNTLMv2_response(const struct cifsSesInfo *, char *);
 extern void setup_ntlmv2_rsp(struct cifsSesInfo *, char *,
 			     const struct nls_table *);
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-extern void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key);
+extern void calc_lanman_hash(const char *password, const char *cryptkey,
+				bool encrypt, char *lnm_session_key);
 #endif /* CIFS_WEAK_PW_HASH */
 extern int CIFSSMBCopy(int xid,
 			struct cifsTconInfo *source_tcon,
@@ -1382,13 +1382,13 @@ openRetry:
 		if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
 			*pOplock |= CIFS_CREATE_ACTION;
 		if (pfile_info) {
-		    memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
-			36 /* CreationTime to Attributes */);
-		    /* the file_info buf is endian converted by caller */
-		    pfile_info->AllocationSize = pSMBr->AllocationSize;
-		    pfile_info->EndOfFile = pSMBr->EndOfFile;
-		    pfile_info->NumberOfLinks = cpu_to_le32(1);
-		    pfile_info->DeletePending = 0;
+			memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
+				36 /* CreationTime to Attributes */);
+			/* the file_info buf is endian converted by caller */
+			pfile_info->AllocationSize = pSMBr->AllocationSize;
+			pfile_info->EndOfFile = pSMBr->EndOfFile;
+			pfile_info->NumberOfLinks = cpu_to_le32(1);
+			pfile_info->DeletePending = 0;
 		}
 	}

@@ -1414,8 +1414,13 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
 	cFYI(1, ("Reading %d bytes on fid %d", count, netfid));
 	if (tcon->ses->capabilities & CAP_LARGE_FILES)
 		wct = 12;
-	else
+	else {
 		wct = 10; /* old style read */
+		if ((lseek >> 32) > 0)  {
+			/* can not handle this big offset for old */
+			return -EIO;
+		}
+	}

 	*nbytes = 0;
 	rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
@@ -1431,8 +1436,6 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
 	pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
 	if (wct == 12)
 		pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
-	else if ((lseek >> 32) > 0) /* can not handle this big offset for old */
-		return -EIO;

 	pSMB->Remaining = 0;
 	pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
@@ -1519,8 +1522,13 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,

 	if (tcon->ses->capabilities & CAP_LARGE_FILES)
 		wct = 14;
-	else
+	else {
 		wct = 12;
+		if ((offset >> 32) > 0) {
+			/* can not handle big offset for old srv */
+			return -EIO;
+		}
+	}

 	rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
 		      (void **) &pSMBr);
@@ -1535,8 +1543,6 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 	pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
 	if (wct == 14)
 		pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
-	else if ((offset >> 32) > 0) /* can not handle big offset for old srv */
-		return -EIO;

 	pSMB->Reserved = 0xFFFFFFFF;
 	pSMB->WriteMode = 0;
@@ -1558,7 +1564,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
 	pSMB->DataOffset =
 		cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
 	if (buf)
-	    memcpy(pSMB->Data, buf, bytes_sent);
+		memcpy(pSMB->Data, buf, bytes_sent);
 	else if (ubuf) {
 		if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) {
 			cifs_buf_release(pSMB);
@@ -1621,10 +1627,15 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,

 	cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count));

-	if (tcon->ses->capabilities & CAP_LARGE_FILES)
+	if (tcon->ses->capabilities & CAP_LARGE_FILES) {
 		wct = 14;
-	else
+	} else {
 		wct = 12;
+		if ((offset >> 32) > 0) {
+			/* can not handle big offset for old srv */
+			return -EIO;
+		}
+	}
 	rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
 	if (rc)
 		return rc;
@@ -1637,8 +1648,6 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
 	pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
 	if (wct == 14)
 		pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
-	else if ((offset >> 32) > 0) /* can not handle big offset for old srv */
-		return -EIO;
 	pSMB->Reserved = 0xFFFFFFFF;
 	pSMB->WriteMode = 0;
 	pSMB->Remaining = 0;
@@ -1862,10 +1871,6 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
 			rc = -EIO;      /* bad smb */
 			goto plk_err_exit;
 		}
-		if (pLockData == NULL) {
-			rc = -EINVAL;
-			goto plk_err_exit;
-		}
 		data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
 		data_count  = le16_to_cpu(pSMBr->t2.DataCount);
 		if (data_count < sizeof(struct cifs_posix_lock)) {
@@ -483,7 +483,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,

 	xid = GetXid();

-	cFYI(1, (" parent inode = 0x%p name is: %s and dentry = 0x%p",
+	cFYI(1, ("parent inode = 0x%p name is: %s and dentry = 0x%p",
 	      parent_dir_inode, direntry->d_name.name, direntry));

 	/* check whether path exists */
@@ -515,12 +515,11 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
 	}

 	if (direntry->d_inode != NULL) {
-		cFYI(1, (" non-NULL inode in lookup"));
+		cFYI(1, ("non-NULL inode in lookup"));
 	} else {
-		cFYI(1, (" NULL inode in lookup"));
+		cFYI(1, ("NULL inode in lookup"));
 	}
-	cFYI(1,
-	     (" Full path: %s inode = 0x%p", full_path, direntry->d_inode));
+	cFYI(1, ("Full path: %s inode = 0x%p", full_path, direntry->d_inode));

 	if (pTcon->unix_ext)
 		rc = cifs_get_inode_info_unix(&newInode, full_path,
@@ -644,10 +644,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 	__u64 length;
 	bool wait_flag = false;
 	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
+	struct cifsTconInfo *tcon;
 	__u16 netfid;
 	__u8 lockType = LOCKING_ANDX_LARGE_FILES;
-	bool posix_locking;
+	bool posix_locking = 0;

 	length = 1 + pfLock->fl_end - pfLock->fl_start;
 	rc = -EACCES;
@@ -698,7 +698,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 		cFYI(1, ("Unknown type of lock"));

 	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
-	pTcon = cifs_sb->tcon;
+	tcon = cifs_sb->tcon;

 	if (file->private_data == NULL) {
 		FreeXid(xid);
@@ -706,9 +706,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 	}
 	netfid = ((struct cifsFileInfo *)file->private_data)->netfid;

-	posix_locking = (cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
-			(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability));
-
+	if ((tcon->ses->capabilities & CAP_UNIX) &&
+	    (CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
+	    ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
+		posix_locking = 1;
 	/* BB add code here to normalize offset and length to
 	account for negative length which we can not accept over the
 	wire */
@@ -719,7 +720,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 				posix_lock_type = CIFS_RDLCK;
 			else
 				posix_lock_type = CIFS_WRLCK;
-			rc = CIFSSMBPosixLock(xid, pTcon, netfid, 1 /* get */,
+			rc = CIFSSMBPosixLock(xid, tcon, netfid, 1 /* get */,
 					length,	pfLock,
 					posix_lock_type, wait_flag);
 			FreeXid(xid);
@@ -727,10 +728,10 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 		}

 		/* BB we could chain these into one lock request BB */
-		rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
+		rc = CIFSSMBLock(xid, tcon, netfid, length, pfLock->fl_start,
 				 0, 1, lockType, 0 /* wait flag */ );
 		if (rc == 0) {
-			rc = CIFSSMBLock(xid, pTcon, netfid, length,
+			rc = CIFSSMBLock(xid, tcon, netfid, length,
 					 pfLock->fl_start, 1 /* numUnlock */ ,
 					 0 /* numLock */ , lockType,
 					 0 /* wait flag */ );
@@ -767,7 +768,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 		if (numUnlock == 1)
 			posix_lock_type = CIFS_UNLCK;

-		rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */,
+		rc = CIFSSMBPosixLock(xid, tcon, netfid, 0 /* set */,
 				      length, pfLock,
 				      posix_lock_type, wait_flag);
 	} else {
@@ -775,7 +776,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 			(struct cifsFileInfo *)file->private_data;

 		if (numLock) {
-			rc = CIFSSMBLock(xid, pTcon, netfid, length,
+			rc = CIFSSMBLock(xid, tcon, netfid, length,
 					pfLock->fl_start,
 					0, numLock, lockType, wait_flag);

@@ -796,7 +797,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 				if (pfLock->fl_start <= li->offset &&
 						(pfLock->fl_start + length) >=
 						(li->offset + li->length)) {
-					stored_rc = CIFSSMBLock(xid, pTcon,
+					stored_rc = CIFSSMBLock(xid, tcon,
 							netfid,
 							li->length, li->offset,
 							1, 0, li->type, false);
@@ -1,7 +1,7 @@
 /*
 *   fs/cifs/inode.c
 *
- *   Copyright (C) International Business Machines  Corp., 2002,2007
+ *   Copyright (C) International Business Machines  Corp., 2002,2008
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
@@ -621,6 +621,47 @@ static const struct inode_operations cifs_ipc_inode_ops = {
 	.lookup = cifs_lookup,
 };

+static char *build_path_to_root(struct cifs_sb_info *cifs_sb)
+{
+	int pplen = cifs_sb->prepathlen;
+	int dfsplen;
+	char *full_path = NULL;
+
+	/* if no prefix path, simply set path to the root of share to "" */
+	if (pplen == 0) {
+		full_path = kmalloc(1, GFP_KERNEL);
+		if (full_path)
+			full_path[0] = 0;
+		return full_path;
+	}
+
+	if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS))
+		dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1);
+	else
+		dfsplen = 0;
+
+	full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
+	if (full_path == NULL)
+		return full_path;
+
+	if (dfsplen) {
+		strncpy(full_path, cifs_sb->tcon->treeName, dfsplen);
+		/* switch slash direction in prepath depending on whether
+		 * windows or posix style path names
+		 */
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+			int i;
+			for (i = 0; i < dfsplen; i++) {
+				if (full_path[i] == '\\')
+					full_path[i] = '/';
+			}
+		}
+	}
+	strncpy(full_path + dfsplen, cifs_sb->prepath, pplen);
+	full_path[dfsplen + pplen] = 0; /* add trailing null */
+	return full_path;
+}
+
 /* gets root inode */
 struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
 {
@@ -628,6 +669,7 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
 	struct cifs_sb_info *cifs_sb;
 	struct inode *inode;
 	long rc;
+	char *full_path;

 	inode = iget_locked(sb, ino);
 	if (!inode)
@@ -636,13 +678,17 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
 		return inode;

 	cifs_sb = CIFS_SB(inode->i_sb);
-	xid = GetXid();
+	full_path = build_path_to_root(cifs_sb);
+	if (full_path == NULL)
+		return ERR_PTR(-ENOMEM);

+	xid = GetXid();
 	if (cifs_sb->tcon->unix_ext)
-		rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
+		rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
+						xid);
 	else
-		rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid,
-					 NULL);
+		rc = cifs_get_inode_info(&inode, full_path, NULL, inode->i_sb,
+						xid, NULL);
 	if (rc && cifs_sb->tcon->ipc) {
 		cFYI(1, ("ipc connection - fake read inode"));
 		inode->i_mode |= S_IFDIR;
@@ -652,6 +698,7 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
 		inode->i_uid = cifs_sb->mnt_uid;
 		inode->i_gid = cifs_sb->mnt_gid;
 	} else if (rc) {
+		kfree(full_path);
 		_FreeXid(xid);
 		iget_failed(inode);
 		return ERR_PTR(rc);
@@ -659,6 +706,7 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)

 	unlock_new_inode(inode);

+	kfree(full_path);
 	/* can not call macro FreeXid here since in a void func
 	 * TODO: This is no longer true
 	 */
@@ -97,7 +97,10 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
 	kfree(buf_to_free->serverOS);
 	kfree(buf_to_free->serverDomain);
 	kfree(buf_to_free->serverNOS);
-	kfree(buf_to_free->password);
+	if (buf_to_free->password) {
+		memset(buf_to_free->password, 0, strlen(buf_to_free->password));
+		kfree(buf_to_free->password);
+	}
 	kfree(buf_to_free->domainName);
 	kfree(buf_to_free);
 }
@@ -129,6 +132,10 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
 	}
 	atomic_dec(&tconInfoAllocCount);
 	kfree(buf_to_free->nativeFileSystem);
+	if (buf_to_free->password) {
+		memset(buf_to_free->password, 0, strlen(buf_to_free->password));
+		kfree(buf_to_free->password);
+	}
 	kfree(buf_to_free);
 }

@@ -417,7 +417,10 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
 		/* BB calculate hash with password */
 		/* and copy into bcc */

-		calc_lanman_hash(ses, lnm_session_key);
+		calc_lanman_hash(ses->password, ses->server->cryptKey,
+				 ses->server->secMode & SECMODE_PW_ENCRYPT ?
+					true : false, lnm_session_key);
+
 		ses->flags |= CIFS_SES_LANMAN;
 		memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
 		bcc_ptr += CIFS_SESS_KEY_SIZE;
@@ -318,7 +318,8 @@ str_to_key(unsigned char *str, unsigned char *key)
 }

 static void
-smbhash(unsigned char *out, unsigned char *in, unsigned char *key, int forw)
+smbhash(unsigned char *out, const unsigned char *in, unsigned char *key,
+	int forw)
 {
 	int i;
 	char *outb; /* outb[64] */
@@ -363,7 +364,7 @@ E_P16(unsigned char *p14, unsigned char *p16)
 }

 void
-E_P24(unsigned char *p21, unsigned char *c8, unsigned char *p24)
+E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
 {
 	smbhash(p24, c8, p21, 1);
 	smbhash(p24 + 8, c8, p21 + 7, 1);
--- a/Show More
+++ b/Show More