Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 (9093ba53) · Commits · e / devices / android_kernel_fairphone_FP5

fs/cifs/cifs_fs_sb.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,7 @@
		#define CIFS_MOUNT_FSCACHE 0x8000 /* local caching enabled */
		#define CIFS_MOUNT_MF_SYMLINKS 0x10000 /* Minshall+French Symlinks enabled */
		#define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */
		#define CIFS_MOUNT_STRICT_IO 0x40000 /* strict cache mode */

		struct cifs_sb_info {
		struct rb_root tlink_tree;

fs/cifs/cifs_unicode.c

+104 −23

Original line number	Diff line number	Diff line
		@@ -44,10 +44,14 @@ cifs_ucs2_bytes(const __le16 *from, int maxbytes,
		int charlen, outlen = 0;
		int maxwords = maxbytes / 2;
		char tmp[NLS_MAX_CHARSET_SIZE];
		__u16 ftmp;

		for (i = 0; i < maxwords && from[i]; i++) {
		charlen = codepage->uni2char(le16_to_cpu(from[i]), tmp,
		NLS_MAX_CHARSET_SIZE);
		for (i = 0; i < maxwords; i++) {
		ftmp = get_unaligned_le16(&from[i]);
		if (ftmp == 0)
		break;

		charlen = codepage->uni2char(ftmp, tmp, NLS_MAX_CHARSET_SIZE);
		if (charlen > 0)
		outlen += charlen;
		else
		@@ -58,9 +62,9 @@ cifs_ucs2_bytes(const __le16 *from, int maxbytes,
		}

		/*
		* cifs_mapchar - convert a little-endian char to proper char in codepage
		* cifs_mapchar - convert a host-endian char to proper char in codepage
		* @target - where converted character should be copied
		* @src_char - 2 byte little-endian source character
		* @src_char - 2 byte host-endian source character
		* @cp - codepage to which character should be converted
		* @mapchar - should character be mapped according to mapchars mount option?
		*
		@@ -69,7 +73,7 @@ cifs_ucs2_bytes(const __le16 *from, int maxbytes,
		* enough to hold the result of the conversion (at least NLS_MAX_CHARSET_SIZE).
		*/
		static int
		cifs_mapchar(char target, const __le16 src_char, const struct nls_table cp,
		cifs_mapchar(char target, const __u16 src_char, const struct nls_table cp,
		bool mapchar)
		{
		int len = 1;
		@@ -82,7 +86,7 @@ cifs_mapchar(char target, const __le16 src_char, const struct nls_table cp,
		* build_path_from_dentry are modified, as they use slash as
		* separator.
		*/
		switch (le16_to_cpu(src_char)) {
		switch (src_char) {
		case UNI_COLON:
		*target = ':';
		break;
		@@ -109,8 +113,7 @@ cifs_mapchar(char target, const __le16 src_char, const struct nls_table cp,
		return len;

		cp_convert:
		len = cp->uni2char(le16_to_cpu(src_char), target,
		NLS_MAX_CHARSET_SIZE);
		len = cp->uni2char(src_char, target, NLS_MAX_CHARSET_SIZE);
		if (len <= 0) {
		*target = '?';
		len = 1;
		@@ -149,6 +152,7 @@ cifs_from_ucs2(char to, const __le16 from, int tolen, int fromlen,
		int nullsize = nls_nullsize(codepage);
		int fromwords = fromlen / 2;
		char tmp[NLS_MAX_CHARSET_SIZE];
		__u16 ftmp;

		/*
		* because the chars can be of varying widths, we need to take care
		@@ -158,19 +162,23 @@ cifs_from_ucs2(char to, const __le16 from, int tolen, int fromlen,
		*/
		safelen = tolen - (NLS_MAX_CHARSET_SIZE + nullsize);

		for (i = 0; i < fromwords && from[i]; i++) {
		for (i = 0; i < fromwords; i++) {
		ftmp = get_unaligned_le16(&from[i]);
		if (ftmp == 0)
		break;

		/*
		* check to see if converting this character might make the
		* conversion bleed into the null terminator
		*/
		if (outlen >= safelen) {
		charlen = cifs_mapchar(tmp, from[i], codepage, mapchar);
		charlen = cifs_mapchar(tmp, ftmp, codepage, mapchar);
		if ((outlen + charlen) > (tolen - nullsize))
		break;
		}

		/* put converted char into 'to' buffer */
		charlen = cifs_mapchar(&to[outlen], from[i], codepage, mapchar);
		charlen = cifs_mapchar(&to[outlen], ftmp, codepage, mapchar);
		outlen += charlen;
		}

		@@ -193,24 +201,21 @@ cifs_strtoUCS(__le16 to, const char from, int len,
		{
		int charlen;
		int i;
		wchar_t wchar_to = (wchar_t )to; /* needed to quiet sparse */
		wchar_t wchar_to; /* needed to quiet sparse */

		for (i = 0; len && *from; i++, from += charlen, len -= charlen) {

		/* works for 2.4.0 kernel or later */
		charlen = codepage->char2uni(from, len, &wchar_to[i]);
		charlen = codepage->char2uni(from, len, &wchar_to);
		if (charlen < 1) {
		cERROR(1, "strtoUCS: char2uni of %d returned %d",
		(int)*from, charlen);
		cERROR(1, "strtoUCS: char2uni of 0x%x returned %d",
		*from, charlen);
		/* A question mark */
		to[i] = cpu_to_le16(0x003f);
		wchar_to = 0x003f;
		charlen = 1;
		} else
		to[i] = cpu_to_le16(wchar_to[i]);

		}
		put_unaligned_le16(wchar_to, &to[i]);
		}

		to[i] = 0;
		put_unaligned_le16(0, &to[i]);
		return i;
		}

		@@ -252,3 +257,79 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
		return dst;
		}

		/*
		* Convert 16 bit Unicode pathname to wire format from string in current code
		* page. Conversion may involve remapping up the six characters that are
		* only legal in POSIX-like OS (if they are present in the string). Path
		* names are little endian 16 bit Unicode on the wire
		*/
		int
		cifsConvertToUCS(__le16 target, const char source, int maxlen,
		const struct nls_table *cp, int mapChars)
		{
		int i, j, charlen;
		int len_remaining = maxlen;
		char src_char;
		__u16 temp;

		if (!mapChars)
		return cifs_strtoUCS(target, source, PATH_MAX, cp);

		for (i = 0, j = 0; i < maxlen; j++) {
		src_char = source[i];
		switch (src_char) {
		case 0:
		put_unaligned_le16(0, &target[j]);
		goto ctoUCS_out;
		case ':':
		temp = UNI_COLON;
		break;
		case '*':
		temp = UNI_ASTERIK;
		break;
		case '?':
		temp = UNI_QUESTION;
		break;
		case '<':
		temp = UNI_LESSTHAN;
		break;
		case '>':
		temp = UNI_GRTRTHAN;
		break;
		case '\|':
		temp = UNI_PIPE;
		break;
		/*
		* FIXME: We can not handle remapping backslash (UNI_SLASH)
		* until all the calls to build_path_from_dentry are modified,
		* as they use backslash as separator.
		*/
		default:
		charlen = cp->char2uni(source+i, len_remaining,
		&temp);
		/*
		* if no match, use question mark, which at least in
		* some cases serves as wild card
		*/
		if (charlen < 1) {
		temp = 0x003f;
		charlen = 1;
		}
		len_remaining -= charlen;
		/*
		* character may take more than one byte in the source
		* string, but will take exactly two bytes in the
		* target string
		*/
		i += charlen;
		continue;
		}
		put_unaligned_le16(temp, &target[j]);
		i++; /* move to next char in source string */
		len_remaining--;
		}

		ctoUCS_out:
		return i;
		}

fs/cifs/cifsfs.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -733,6 +733,25 @@ const struct file_operations cifs_file_ops = {
		.setlease = cifs_setlease,
		};

		const struct file_operations cifs_file_strict_ops = {
		.read = do_sync_read,
		.write = do_sync_write,
		.aio_read = cifs_strict_readv,
		.aio_write = cifs_file_aio_write,
		.open = cifs_open,
		.release = cifs_close,
		.lock = cifs_lock,
		.fsync = cifs_strict_fsync,
		.flush = cifs_flush,
		.mmap = cifs_file_strict_mmap,
		.splice_read = generic_file_splice_read,
		.llseek = cifs_llseek,
		#ifdef CONFIG_CIFS_POSIX
		.unlocked_ioctl = cifs_ioctl,
		#endif /* CONFIG_CIFS_POSIX */
		.setlease = cifs_setlease,
		};

		const struct file_operations cifs_file_direct_ops = {
		/* no aio, no readv -
		BB reevaluate whether they can be done with directio, no cache */
		@@ -751,6 +770,7 @@ const struct file_operations cifs_file_direct_ops = {
		.llseek = cifs_llseek,
		.setlease = cifs_setlease,
		};

		const struct file_operations cifs_file_nobrl_ops = {
		.read = do_sync_read,
		.write = do_sync_write,
		@@ -769,6 +789,24 @@ const struct file_operations cifs_file_nobrl_ops = {
		.setlease = cifs_setlease,
		};

		const struct file_operations cifs_file_strict_nobrl_ops = {
		.read = do_sync_read,
		.write = do_sync_write,
		.aio_read = cifs_strict_readv,
		.aio_write = cifs_file_aio_write,
		.open = cifs_open,
		.release = cifs_close,
		.fsync = cifs_strict_fsync,
		.flush = cifs_flush,
		.mmap = cifs_file_strict_mmap,
		.splice_read = generic_file_splice_read,
		.llseek = cifs_llseek,
		#ifdef CONFIG_CIFS_POSIX
		.unlocked_ioctl = cifs_ioctl,
		#endif /* CONFIG_CIFS_POSIX */
		.setlease = cifs_setlease,
		};

		const struct file_operations cifs_file_direct_nobrl_ops = {
		/* no mmap, no aio, no readv -
		BB reevaluate whether they can be done with directio, no cache */

fs/cifs/cifsfs.h

+10 −3

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@ extern int cifs_rename(struct inode , struct dentry , struct inode *,
		struct dentry *);
		extern int cifs_revalidate_file(struct file *filp);
		extern int cifs_revalidate_dentry(struct dentry *);
		extern void cifs_invalidate_mapping(struct inode *inode);
		extern int cifs_getattr(struct vfsmount , struct dentry , struct kstat *);
		extern int cifs_setattr(struct dentry , struct iattr );

		@@ -72,19 +73,25 @@ extern const struct inode_operations cifs_dfs_referral_inode_operations;
		/* Functions related to files and directories */
		extern const struct file_operations cifs_file_ops;
		extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
		extern const struct file_operations cifs_file_nobrl_ops;
		extern const struct file_operations cifs_file_direct_nobrl_ops; /* no brlocks */
		extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
		extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
		extern const struct file_operations cifs_file_direct_nobrl_ops;
		extern const struct file_operations cifs_file_strict_nobrl_ops;
		extern int cifs_open(struct inode inode, struct file file);
		extern int cifs_close(struct inode inode, struct file file);
		extern int cifs_closedir(struct inode inode, struct file file);
		extern ssize_t cifs_user_read(struct file file, char __user read_data,
		size_t read_size, loff_t *poffset);
		extern ssize_t cifs_strict_readv(struct kiocb iocb, const struct iovec iov,
		unsigned long nr_segs, loff_t pos);
		extern ssize_t cifs_user_write(struct file file, const char __user write_data,
		size_t write_size, loff_t *poffset);
		extern int cifs_lock(struct file , int, struct file_lock );
		extern int cifs_fsync(struct file *, int);
		extern int cifs_strict_fsync(struct file *, int);
		extern int cifs_flush(struct file *, fl_owner_t id);
		extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
		extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
		extern const struct file_operations cifs_dir_ops;
		extern int cifs_dir_open(struct inode inode, struct file file);
		extern int cifs_readdir(struct file file, void direntry, filldir_t filldir);

fs/cifs/cifsglob.h

+14 −22

Original line number	Diff line number	Diff line
		@@ -161,6 +161,7 @@ struct TCP_Server_Info {
		int srv_count; /* reference counter */
		/* 15 character server name + 0x20 16th byte indicating type = srv */
		char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
		enum statusEnum tcpStatus; /* what we think the status is */
		char hostname; / hostname portion of UNC string */
		struct socket *ssocket;
		struct sockaddr_storage dstaddr;
		@@ -168,25 +169,16 @@ struct TCP_Server_Info {
		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 */
		enum protocolEnum protocolType;
		char versionMajor;
		char versionMinor;
		bool svlocal:1; /* local server or remote */
		bool noblocksnd; /* use blocking sendmsg */
		bool noautotune; /* do not autotune send buf sizes */
		bool tcp_nodelay;
		atomic_t inFlight; /* number of requests on the wire to server */
		#ifdef CONFIG_CIFS_STATS2
		atomic_t inSend; /* requests trying to send */
		atomic_t num_waiters; /* blocked waiting to get in sendrecv */
		#endif
		enum statusEnum tcpStatus; /* what we think the status is */
		struct mutex srv_mutex;
		struct task_struct *tsk;
		char server_GUID[16];
		char secMode;
		bool session_estab; /* mark when very first sess is established */
		u16 dialect; /* dialect index that server chose */
		enum securityEnum secType;
		unsigned int maxReq; /* Clients should submit no more */
		/* than maxReq distinct unanswered SMBs to the server when using */
		@@ -199,8 +191,6 @@ struct TCP_Server_Info {
		unsigned int max_vcs; /* maximum number of smb sessions, at least
		those that can be specified uniquely with
		vcnumbers */
		char sessid[4]; /* unique token id for this session */
		/* (returned on Negotiate */
		int capabilities; /* allow selective disabling of caps by smb sess */
		int timeAdj; /* Adjust for difference in server time zone in sec */
		__u16 CurrentMid; /* multiplex id - rotating counter */
		@@ -210,18 +200,20 @@ struct TCP_Server_Info {
		__u32 sequence_number; /* for signing, protected by srv_mutex */
		struct session_key session_key;
		unsigned long lstrp; /* when we got last response from this server */
		u16 dialect; /* dialect index that server chose */
		struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
		/* extended security flavors that server supports */
		bool sec_ntlmssp; /* supports NTLMSSP */
		bool sec_kerberosu2u; /* supports U2U Kerberos */
		bool sec_kerberos; /* supports plain Kerberos */
		bool sec_mskerberos; /* supports legacy MS Kerberos */
		bool sec_kerberosu2u; /* supports U2U Kerberos */
		bool sec_ntlmssp; /* supports NTLMSSP */
		bool session_estab; /* mark when very first sess is established */
		struct delayed_work echo; /* echo ping workqueue job */
		#ifdef CONFIG_CIFS_FSCACHE
		struct fscache_cookie fscache; / client index cache cookie */
		#endif
		#ifdef CONFIG_CIFS_STATS2
		atomic_t inSend; /* requests trying to send */
		atomic_t num_waiters; /* blocked waiting to get in sendrecv */
		#endif
		};

		/*
		@@ -447,11 +439,11 @@ struct cifsInodeInfo {
		/* BB add in lists for dirty pages i.e. write caching info for oplock */
		struct list_head openFileList;
		__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
		unsigned long time; /* jiffies of last update/check of inode */
		bool clientCanCacheRead:1; /* read oplock */
		bool clientCanCacheAll:1; /* read and writebehind oplock */
		bool delete_pending:1; /* DELETE_ON_CLOSE is set */
		bool invalid_mapping:1; /* pagecache is invalid */
		bool clientCanCacheRead; /* read oplock */
		bool clientCanCacheAll; /* read and writebehind oplock */
		bool delete_pending; /* DELETE_ON_CLOSE is set */
		bool invalid_mapping; /* pagecache is invalid */
		unsigned long time; /* jiffies of last update of inode */
		u64 server_eof; /* current file size on server */
		u64 uniqueid; /* server inode number */
		u64 createtime; /* creation time on server */