Add mknod support

fs/cifs/cifsfs.c

@@ -301,6 +301,7 @@ struct inode_operations cifs_dir_inode_ops = {
 /*	revalidate:cifs_revalidate,   */
 	.setattr = cifs_setattr,
 	.symlink = cifs_symlink,
+	.mknod   = cifs_mknod,
 };
 
 struct inode_operations cifs_file_inode_ops = {

fs/cifs/cifsfs.h

@@ -50,6 +50,7 @@ extern int cifs_create(struct inode *, struct dentry *, int, struct nameidata *)
 extern struct dentry *cifs_lookup(struct inode *, struct dentry *, struct nameidata *);
 extern int cifs_unlink(struct inode *, struct dentry *);
 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
+extern int cifs_mknod(struct inode *, struct dentry *, int, dev_t);
 extern int cifs_mkdir(struct inode *, struct dentry *, int);
 extern int cifs_rmdir(struct inode *, struct dentry *);
 extern int cifs_rename(struct inode *, struct dentry *, struct inode *,

fs/cifs/cifsproto.h

@@ -155,7 +155,7 @@ extern int CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon,
 			 __u64 size, __u16 fileHandle,__u32 opener_pid, int AllocSizeFlag);
 extern int CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *pTcon,
 			char *full_path, __u64 mode, __u64 uid,
-			__u64 gid, const struct nls_table *nls_codepage);
+			__u64 gid, dev_t dev, const struct nls_table *nls_codepage);
 
 extern int CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
 			const char *newName,

fs/cifs/cifssmb.c

@@ -2299,7 +2299,7 @@ CIFSSMBSetTimes(int xid, struct cifsTconInfo *tcon, char *fileName,
 int
 CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
 		    char *fileName, __u64 mode, __u64 uid, __u64 gid,
-		    const struct nls_table *nls_codepage)
+		    dev_t device, const struct nls_table *nls_codepage)
 {
 	TRANSACTION2_SPI_REQ *pSMB = NULL;
 	TRANSACTION2_SPI_RSP *pSMBr = NULL;
@@ -2358,6 +2358,9 @@ CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
 	pSMB->hdr.smb_buf_length += pSMB->ByteCount;
 	data_offset->Uid = cpu_to_le64(uid);
 	data_offset->Gid = cpu_to_le64(gid);
+	/* better to leave device as zero when it is  */
+	data_offset->DevMajor = cpu_to_le64(MAJOR(device));
+	data_offset->DevMinor = cpu_to_le64(MINOR(device));
 	data_offset->Permissions = cpu_to_le64(mode);
 	pSMB->ByteCount = cpu_to_le16(pSMB->ByteCount);
 	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,

fs/cifs/dir.c

@@ -193,6 +193,43 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	return rc;
 }
 
+int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t device_number) 
+{
+	int rc = -EPERM;
+	int xid;
+	struct cifs_sb_info *cifs_sb;
+	struct cifsTconInfo *pTcon;
+	char *full_path = NULL;
+	struct inode * newinode = NULL;
+
+	xid = GetXid();
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+	pTcon = cifs_sb->tcon;
+
+	full_path = build_path_from_dentry(direntry);
+
+	if (pTcon->ses->capabilities & CAP_UNIX) {
+		rc = CIFSSMBUnixSetPerms(xid, pTcon,
+			full_path, mode, current->euid, current->egid,
+			device_number, cifs_sb->local_nls);
+		if(!rc) {
+                        rc = cifs_get_inode_info_unix(&newinode, full_path,
+                                                      inode->i_sb);
+			direntry->d_op = &cifs_dentry_ops;
+			if(rc == 0)
+				d_instantiate(direntry, newinode);
+		}
+	}
+
+        if (full_path)
+                kfree(full_path);
+        FreeXid(xid);
+
+        return rc;
+}
+
+
 struct dentry *
 cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct nameidata *nd)
 {

fs/cifs/file.c

@@ -125,6 +125,7 @@ cifs_open(struct inode *inode, struct file *file)
 					CIFSSMBUnixSetPerms(xid, pTcon, full_path, inode->i_mode,
 						(__u64)-1, 
 						(__u64)-1,
+						0 /* dev */,
 						cifs_sb->local_nls);
 				else {/* BB implement via Windows security descriptors */
 			/* eg CIFSSMBWinSetPerms(xid,pTcon,full_path,mode,-1,-1,local_nls);*/

fs/cifs/inode.c

@@ -397,6 +397,7 @@ cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 			CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode,
 				(__u64)-1,  
 				(__u64)-1,
+				0 /* dev_t */,
 				cifs_sb->local_nls);
 		else { /* BB to be implemented via Windows secrty descriptors*/
 		/* eg CIFSSMBWinSetPerms(xid,pTcon,full_path,mode,-1,-1,local_nls);*/
@@ -702,7 +703,7 @@ cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 	if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
 	    && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
 		rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
-				    cifs_sb->local_nls);
+				0 /* dev_t */, cifs_sb->local_nls);
 	else if (attrs->ia_valid & ATTR_MODE) {
 		if((mode & S_IWUGO) == 0) /* not writeable */ {
 			if((cifsInode->cifsAttrs & ATTR_READONLY) == 0)