Lustre light client request module

diff --git a/lustre/llite/Makefile.am b/lustre/llite/Makefile.am
new file mode 100644 (file)
index 0000000..0f17467
--- /dev/null
+++ b/lustre/llite/Makefile.am
@@ -0,0 +1,17 @@
+# Copyright (C) 2001  Cluster File Systems, Inc.
+#
+# This code is issued under the GNU General Public License.
+# See the file COPYING in this distribution
+
+MODULE = llight
+modulefs_DATA = llight.o
+EXTRA_PROGRAMS = llight
+
+
+llight_SOURCES =  mds_pack.c request.c # super.c rw.c file.c dir.c sysctl.c super.c namei.c symlink.c
+
+mds_pack.c: 
+       ln -s ../lib/mds_pack.c .
+
+
+include $(top_srcdir)/Rules

diff --git a/lustre/llite/request.c b/lustre/llite/request.c
new file mode 100644 (file)
index 0000000..e7f9131
--- /dev/null
+++ b/lustre/llite/request.c
@@ -0,0 +1,149 @@
+/*
+ * Copryright (C) 2001 Cluster File Systems, Inc.
+ *
+ */
+
+#define EXPORT_SYMTAB
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/locks.h>
+#include <linux/unistd.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <asm/uaccess.h>
+#include <linux/vmalloc.h>
+#include <asm/segment.h>
+#include <linux/miscdevice.h>
+
+#include <linux/obd_support.h>
+#include <linux/lustre_lib.h>
+#include <linux/lustre_idl.h>
+#include <linux/lustre_mds.h>
+
+#define REQUEST_MINOR 244
+extern int mds_queue_req(struct mds_request *);
+
+int llight_getattr(ino_t ino, struct  mds_rep  *rep)
+{
+       struct mds_request *request;
+       int rc; 
+
+       request = (struct mds_request *)kmalloc(sizeof(*request), 
+                                               GFP_KERNEL); 
+       if (!request) { 
+               printk("llight request: out of memory\n");
+               return -ENOMEM;
+       }
+
+       rc = mds_pack_req(NULL, 0, NULL, 0, 
+                         &request->rq_reqhdr, &request->rq_req, 
+                         &request->rq_reqlen, &request->rq_reqbuf);
+       if (rc) { 
+               printk("llight request: cannot pack request %d\n", rc); 
+               return rc;
+       }
+       request->rq_req->fid1.id = ino;
+
+       request->rq_reqhdr->opc = MDS_GETATTR;
+       
+       rc = mds_queue_req(request);
+       if (rc) { 
+               printk("llight request: error in handling %d\n", rc); 
+               return rc;
+       }
+
+       printk("mode: %o\n", request->rq_rep->mode); 
+       if (rep) { 
+               memcpy(rep, request->rq_repbuf, sizeof(*rep));
+       }
+       kfree(request->rq_repbuf);
+       kfree(request);
+       return 0;
+}
+
+
+static int request_ioctl(struct inode *inode, struct file *file, 
+                      unsigned int cmd, unsigned long arg)
+{
+       int err;
+
+       ENTRY;
+
+       if (MINOR(inode->i_rdev) != REQUEST_MINOR) {
+               EXIT;
+               return -EINVAL;
+       }
+
+       if ( _IOC_TYPE(cmd) != IOC_REQUEST_TYPE || 
+             _IOC_NR(cmd) < IOC_REQUEST_MIN_NR  || 
+             _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
+                CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
+                                _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
+                EXIT;
+                return -EINVAL;
+        }
+
+       
+       switch (cmd) {
+       case IOC_REQUEST_GETATTR: { 
+               printk("-- getting attr for ino 2\n"); 
+               err = llight_getattr(2, NULL);
+               printk("-- done err %d\n", err);
+               break;
+       }
+       default:                
+               err = -EINVAL;
+               EXIT;
+               break;
+       }
+       EXIT;
+       return err;
+}
+
+
+static struct file_operations requestdev_fops = {
+       ioctl: request_ioctl,
+};
+
+
+static struct miscdevice request_dev = {
+       REQUEST_MINOR,
+       "request",
+       &requestdev_fops
+};
+
+
+int init_request_module(void)
+{
+       misc_register( &request_dev );
+        return 0 ;
+}
+
+#ifdef MODULE
+MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
+MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
+
+#include <linux/module.h>
+
+int init_module(void)
+{
+        return init_request_module();
+}
+
+void cleanup_module(void)
+{
+       misc_deregister(&request_dev);
+       return;
+}
+
+#endif