[CIFS] CIFS support for named pipes (part 1) (7f8ed420) · Commits · 戴 / test

fs/cifs/cifsglob.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -291,6 +291,7 @@ struct cifsTconInfo {
		FILE_SYSTEM_DEVICE_INFO fsDevInfo;
		FILE_SYSTEM_ATTRIBUTE_INFO fsAttrInfo; /* ok if fs name truncated */
		FILE_SYSTEM_UNIX_INFO fsUnixInfo;
		unsigned ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */
		unsigned retry:1;
		unsigned nocase:1;
		unsigned unix_ext:1; /* if off disable Linux extensions to CIFS protocol
		@@ -341,6 +342,7 @@ struct cifsFileInfo {
		struct list_head llist; /* list of byte range locks we have. */
		unsigned closePend:1; /* file is marked to close */
		unsigned invalidHandle:1; /* file closed via session abend */
		unsigned messageMode:1 /* for pipes: is message or byte mode */
		atomic_t wrtPending; /* handle in use - defer close */
		struct semaphore fh_sem; /* prevents reopen race after dead ses*/
		char search_resume_name; / BB removeme BB */

+16 −2

Original line number	Diff line number	Diff line
		@@ -2186,8 +2186,10 @@ cifs_mount(struct super_block sb, struct cifs_sb_info cifs_sb,
		tcon->ses = pSesInfo;

		/* do not care if following two calls succeed - informational */
		if (!tcon->ipc) {
		CIFSSMBQFSDeviceInfo(xid, tcon);
		CIFSSMBQFSAttributeInfo(xid, tcon);
		}

		/* tell server which Unix caps we support */
		if (tcon->ses->capabilities & CAP_UNIX)
		@@ -3385,6 +3387,18 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
		bcc_ptr = pByteArea(smb_buffer_response);
		length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
		/* skip service field (NB: this field is always ASCII) */
		if (length == 3) {
		if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') &&
		(bcc_ptr[2] == 'C')) {
		cFYI(1, ("IPC connection"));
		tcon->ipc = 1;
		}
		} else if (length == 2) {
		if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) {
		/* the most common case */
		cFYI(1, ("disk share connection"));
		}
		}
		bcc_ptr += length + 1;
		strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
		if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {

+1 −1

Original line number	Diff line number	Diff line
		@@ -3,7 +3,7 @@
		*
		* vfs operations that deal with dentries
		*
		* Copyright (C) International Business Machines Corp., 2002,2005
		* Copyright (C) International Business Machines Corp., 2002,2007
		* Author(s): Steve French (sfrench@us.ibm.com)
		*
		* This library is free software; you can redistribute it and/or modify

+18 −4

Original line number	Diff line number	Diff line
		@@ -575,19 +575,33 @@ int cifs_get_inode_info(struct inode **pinode,
		return rc;
		}

		static const struct inode_operations cifs_ipc_inode_ops = {
		.lookup = cifs_lookup,
		};

		/* gets root inode */
		void cifs_read_inode(struct inode *inode)
		{
		int xid;
		int xid, rc;
		struct cifs_sb_info *cifs_sb;

		cifs_sb = CIFS_SB(inode->i_sb);
		xid = GetXid();

		if (cifs_sb->tcon->unix_ext)
		cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
		rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
		else
		cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
		rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
		if (rc && cifs_sb->tcon->ipc) {
		cFYI(1, ("ipc connection - fake read inode"));
		inode->i_mode \|= S_IFDIR;
		inode->i_nlink = 2;
		inode->i_op = &cifs_ipc_inode_ops;
		inode->i_fop = &simple_dir_operations;
		inode->i_uid = cifs_sb->mnt_uid;
		inode->i_gid = cifs_sb->mnt_gid;
		}

		/* can not call macro FreeXid here since in a void func */
		_FreeXid(xid);
		}

+0 −1

Original line number	Diff line number	Diff line
		@@ -169,7 +169,6 @@ cifs_buf_get(void)
		void
		cifs_buf_release(void *buf_to_free)
		{

		if (buf_to_free == NULL) {
		/* cFYI(1, ("Null buffer passed to cifs_buf_release"));*/
		return;