* make rmdir working again

* add testcase for load read/write


git-svn-id: svn+ssh://en.codiert.org/home/staff/ben/dev/misc.svn/projects/fpgafs@360 766a2236-cff9-0310-b0c0-a81a5f92509a

files.c

@@ -29,7 +29,8 @@ static int fpgafs_open(struct inode *inode, struct file *file)
 	//struct fpgafs_inode_info *i = FPGAFS_I(inode);
 	//file->private_data = i->i_ctx;
 
-  return 0; // nonseekable_open(inode, file);
+  //return nonseekable_open(inode, file);
+	return 0;
 }
 
 static ssize_t fpgafs_stat_read(struct file *file, char __user *buf,
@@ -74,22 +75,10 @@ static const struct file_operations fpgafs_cmd_fops = {
 	.write = fpgafs_cmd_write,
 };
 
-static ssize_t fpgafs_load_read(struct file *file, char __user *buf,
-                                size_t len, loff_t *pos)
-{
-	return 0;
-}
-
-static ssize_t fpgafs_load_write(struct file *file, const char __user *buf,
-                                size_t len, loff_t *pos)
-{
-	return 0;
-}
-
 static const struct file_operations fpgafs_load_fops = {
 	.open  = fpgafs_open,
-	.write = fpgafs_load_write,
-	.read  = fpgafs_load_read,
+	.write = fpgafs_write_load,
+	.read  = fpgafs_read_load,
 };
 
 static const struct file_operations fpgafs_din_fops = {

fpgafs.h

@@ -50,10 +50,14 @@ struct fpgafs_lldrv {
 int fpgafs_register_lldrv(struct fpgafs_lldrv *drv);
 int fpgafs_unregister_lldrv(struct fpgafs_lldrv *drv);
 
-ssize_t fpgafs_send_data(struct file *file, const char __user *buf, size_t len, loff_t *pos);
-ssize_t fpgafs_recv_data(struct file *file, char __user *buf, size_t len, loff_t *pos);
+ssize_t fpgafs_send_data(struct file *file, const char __user *buf,
+                                size_t len, loff_t *pos);
+ssize_t fpgafs_recv_data(struct file *file, char __user *buf,
+                                size_t len, loff_t *pos);
 
-int fpgafs_read_load(char *buf, int len);
-int fpgafs_write_load(char *buf, int len);
+ssize_t fpgafs_write_load(struct file *file, const char __user *buf,
+                                size_t len, loff_t *pos);
+ssize_t fpgafs_read_load(struct file *file, char __user *buf,
+                                size_t len, loff_t *pos);
 
 #endif /* FPGAFS_H */

inode.c

@@ -105,9 +105,8 @@ static int fpgafs_fill_dir(struct dentry *dir, struct tree_descr *files,
 		                     files->mode & mode, ctx);
 		if (ret)
 			goto out;
-			files++;
+		files++;
 	}
-
 	return 0;
 out:
   fpgafs_prune_dir(dir);
@@ -195,8 +194,7 @@ int fpgafs_mkdir( struct inode *dir, struct dentry *dentry, int mode)
 static void fpgafs_prune_dir(struct dentry *dir)
 {
 	struct dentry *dentry, *tmp;
-
-	mutex_lock(&dir->d_inode->i_mutex);
+	//mutex_lock(&dir->d_inode->i_mutex);
 	list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) {
 		spin_lock(&dcache_lock);
 		spin_lock(&dentry->d_lock);
@@ -213,10 +211,9 @@ static void fpgafs_prune_dir(struct dentry *dir)
     }
   }
   shrink_dcache_parent(dir);
-  mutex_unlock(&dir->d_inode->i_mutex);
+  //mutex_unlock(&dir->d_inode->i_mutex);
 }
 
-/* Caller must hold parent->i_mutex */
 static int fpgafs_rmdir(struct inode *dir, struct dentry *dentry)
 {
 	/* remove all entries */

llmgmt.c

@@ -27,13 +27,15 @@ ssize_t fpgafs_recv_data(struct file *file, char __user *buf,
 }
 EXPORT_SYMBOL_GPL(fpgafs_recv_data);
 
-int fpgafs_write_load(char *buf, int len)
+ssize_t fpgafs_write_load(struct file *file, const char __user *buf,
+                                size_t len, loff_t *pos)
 {
 	return (lldrv_cur) ? lldrv_cur->write_load(buf, len) : -EBUSY;
 }
 EXPORT_SYMBOL_GPL(fpgafs_write_load);
 
-int fpgafs_read_load(char *buf, int len)
+ssize_t fpgafs_read_load(struct file *file, char __user *buf,
+                                size_t len, loff_t *pos)
 {
 	return (lldrv_cur) ? lldrv_cur->read_load(buf, len) : -EBUSY;
 }

test/go.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+insmod fpgafs.ko 
+insmod fpgafs_lldrv_dbg.ko 
+mount -t fpgafs non bla/

test/load_rw.c

@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+static char src[] = { 0x12, 0x34, 0x56, 0x78, 0x90};
+static char des[] = { 0x0, 0x0, 0x0, 0x0, 0x0};
+
+/*
+ * LOAD WRITE/READ TEST
+ */
+int
+main(int argc, char **argv)
+{
+	int fd, res, i;
+	char *str, *dir, *tmp;
+
+	if (argc < 2) {
+		printf("USAGE: %.20 <fpgafs-mountpoint>\n", argv[0]);
+		return -1;
+	}
+
+	dir=malloc(sizeof(argv[1]) + 10);
+	str=malloc(sizeof(argv[1]) + 15);
+	sprintf(dir, "%s/bla", argv[1]);
+	sprintf(str, "%s/bla/load", argv[1]);
+
+	if (mkdir(dir, 0777) == -1) {
+		printf("ERROR-1: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("created: %s\n", dir);
+
+	if ((fd = open(str, O_WRONLY, 0)) == -1) {
+		printf("ERROR-2: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("opened: %s\n", str);
+
+	if ((res=write(fd, src, sizeof(src))) == -1) {
+		printf("ERROR-3: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("written (%d): ", res);
+	for (i=0; i < sizeof(src); i++)
+		printf("0x%x ", src[i]);
+	printf("\n");
+	close(fd);
+
+	if ((fd = open(str, O_RDONLY, 0)) == -1) {
+		printf("ERROR-4: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("opened: %s\n", str);
+
+	if ((res=read(fd, des, sizeof(des))) == -1) {
+		printf("ERROR-5: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("read (%d): ", res);
+	for (i=0; i < sizeof(des); i++)
+		printf("0x%x ", des[i]);
+	printf("\n");
+	close(fd);
+
+	if (rmdir(dir) == -1) {
+		printf("ERROR-6: %s\n", strerror(errno));
+		return -1;
+	}
+	printf("removed: %s\n", dir);
+
+	return 0;
+}