fixup kernel module, use correct function signature for file operations

package/exmap/Makefile

@@ -5,7 +5,7 @@ include ${TOPDIR}/rules.mk
 
 PKG_NAME:=		exmap
 PKG_VERSION:=		0.4.1
-PKG_RELEASE:=		2
+PKG_RELEASE:=		3
 PKG_MD5SUM:=		55aec784e214037e61400287a55b5426
 PKG_DESCR:=		memory analysing client tool
 PKG_SECTION:=		debug

package/exmap/patches/patch-kernel_exmap_c

@@ -1,7 +1,40 @@
 $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
 --- exmap-console-0.4.1.orig/kernel/exmap.c	2006-10-24 20:45:11.000000000 +0200
-+++ exmap-console-0.4.1/kernel/exmap.c	2013-10-30 14:01:03.000000000 +0100
-@@ -392,7 +392,11 @@ int setup_from_pid(pid_t pid)
++++ exmap-console-0.4.1/kernel/exmap.c	2013-11-02 18:56:21.000000000 +0100
+@@ -340,24 +340,22 @@ static int show_vma_start(struct exmap_v
+ }
+ 
+ 
+-static int exmap_show_next(char *buffer, int length)
++static ssize_t exmap_show_next(char *buffer, size_t length)
+ {
+-	int offset = 0;
++	ssize_t offset = 0;
+ 	struct exmap_vma_data *vma_data;
+ 	pte_t pte;
+ 	int line_len;
+ 
+ 	while (local_data.vma_cursor < local_data.num_vmas) {
+ 		vma_data = local_data.vma_data + local_data.vma_cursor;
+-//		printk (KERN_INFO
+-//			"exmap: examining vma %08lx [%d/%d] %d\n",
+-//			vma_data->vm_start,
+-//			local_data.vma_cursor,
+-//			local_data.num_vmas,
+-//			vma_data->start_shown);
++		printk (KERN_INFO
++			"exmap: examining vma %08lx [%d/%d] %d\n",
++			vma_data->vm_start,
++			local_data.vma_cursor,
++			local_data.num_vmas,
++			vma_data->start_shown);
+ 		if (!vma_data->start_shown) {
+-//			printk (KERN_INFO
+-//				"exmap: svs\n");
+ 			line_len = show_vma_start(vma_data,
+ 						  buffer + offset,
+ 						  length - offset);
+@@ -392,7 +390,11 @@ int setup_from_pid(pid_t pid)
  	struct task_struct *tsk;
  	int errcode = -EINVAL;
  
@@ -13,20 +46,52 @@ $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
  	if (tsk == NULL) {
  		printk (KERN_ALERT
  			"/proc/%s: can't find task for pid %d\n",
-@@ -405,6 +409,9 @@ int setup_from_pid(pid_t pid)
- 			PROCFS_NAME, pid);
- 		goto Exit;
+@@ -445,10 +447,10 @@ Exit:
+  * where deadbeef is the hex addr of the vma to examine
+  * and pid is the (decimal) pid of the process to examine
+  */
+-static int procfile_write (struct file *file,
++static ssize_t procfile_write (struct file *file,
+ 			   const char __user *buffer,
+-			   unsigned long count,
+-			   void *data)
++			   size_t count,
++			   loff_t *off)
+ {
+ 	pid_t pid;
+ 	int errcode = -EINVAL;
+@@ -475,14 +477,11 @@ static int procfile_write (struct file *
+  * Only support sequential reading of file from start to finish
+  * (following a write() to set the pid to examine
+  */
+-static int procfile_read (char *buffer,
+-			  char **buffer_location,
+-			  off_t offset,
+-			  int buffer_length,
+-			  int *eof,
+-			  void *data)
++static ssize_t procfile_read (struct file *filp,
++			  char __user *buf,
++			  size_t len,
++			  loff_t *ppos)
+ {
+-	int ret;
+ 
+ 	if (local_data.vma_data == NULL) {
+ 		printk (KERN_ALERT "/proc/%s: vma data not set\n",
+@@ -490,47 +489,40 @@ static int procfile_read (char *buffer,
+ 		return -EINVAL;
  	}
-+	printk (KERN_ALERT
-+		"/proc/%s: DEBUG: pid of task is %d\n",
-+			PROCFS_NAME, tsk->pid);
  	
- 	mm = get_task_mm(tsk);
- 	if (mm == NULL) {
-@@ -497,40 +504,29 @@ static int procfile_read (char *buffer,
- 	return ret;
+-	ret = exmap_show_next(buffer, buffer_length);
+-	if (ret > 0) {
+-		*buffer_location = buffer;
+-	}
+-	return ret;
++	return exmap_show_next(buf, len);
  }
  
+-int init_module ()
 +static const struct file_operations proc_file_fops = {
 + .owner = THIS_MODULE,
 + .write  = procfile_write,
@@ -34,7 +99,7 @@ $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
 +};
 +
 +
- int init_module ()
++static int __init exmap_init(void)
  {
  	struct proc_dir_entry *exmap_proc_file;
  	printk (KERN_INFO "/proc/%s: insert\n", PROCFS_NAME);
@@ -68,9 +133,14 @@ $Id: update-patches 24 2008-08-31 14:56:13Z wbx $
  	init_local_data();
  	return 0;
  }
--
+ 
 -void cleanup_module ()
--{
++static void __exit exmap_exit(void)
+ {
 -	printk (KERN_INFO "/proc/%s: remove\n", PROCFS_NAME);
 -	remove_proc_entry (PROCFS_NAME, &proc_root);
--}
++	remove_proc_entry(PROCFS_NAME, NULL);
+ }
++
++module_init(exmap_init);
++module_exit(exmap_exit);

package/exmap/patches/patch-src_exmap_c

@@ -0,0 +1,11 @@
+--- exmap-console-0.4.1.orig/src/exmap.c	2007-02-22 17:37:13.000000000 +0100
++++ exmap-console-0.4.1/src/exmap.c	2013-11-02 18:57:51.000000000 +0100
+@@ -1112,7 +1112,7 @@ load_pid_data (data_t * d,
+ 	    }
+           else
+ 	    {
+-              g_warning ("VMA not found in map_hash [%s]", buf);
++              //g_warning ("VMA not found in map_hash [%s]", buf);
+               cur_vma = NULL;
+ 	    }
+ 	}