uml: convert to seq_file/proc_fops

[safe/jmp/linux-2.6] / arch / um / kernel / exitcode.c

diff --git a/arch/um/kernel/exitcode.c b/arch/um/kernel/exitcode.c
index 6540d2c..829df49 100644 (file)
--- a/arch/um/kernel/exitcode.c
+++ b/arch/um/kernel/exitcode.c
@@ -6,7 +6,9 @@
 #include <linux/ctype.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <asm/uaccess.h>
 
@@ -16,30 +18,26 @@
  */
 int uml_exitcode = 0;
 
-static int read_proc_exitcode(char *page, char **start, off_t off,
-                             int count, int *eof, void *data)
+static int exitcode_proc_show(struct seq_file *m, void *v)
 {
-       int len, val;
+       int val;
 
        /*
         * Save uml_exitcode in a local so that we don't need to guarantee
         * that sprintf accesses it atomically.
         */
        val = uml_exitcode;
-       len = sprintf(page, "%d\n", val);
-       len -= off;
-       if (len <= off+count)
-               *eof = 1;
-       *start = page + off;
-       if (len > count)
-               len = count;
-       if (len < 0)
-               len = 0;
-       return len;
+       seq_printf(m, "%d\n", val);
+       return 0;
+}
+
+static int exitcode_proc_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, exitcode_proc_show, NULL);
 }
 
-static int write_proc_exitcode(struct file *file, const char __user *buffer,
-                              unsigned long count, void *data)
+static ssize_t exitcode_proc_write(struct file *file,
+               const char __user *buffer, size_t count, loff_t *pos)
 {
        char *end, buf[sizeof("nnnnn\0")];
        int tmp;
@@ -55,20 +53,25 @@ static int write_proc_exitcode(struct file *file, const char __user *buffer,
        return count;
 }
 
+static const struct file_operations exitcode_proc_fops = {
+       .owner          = THIS_MODULE,
+       .open           = exitcode_proc_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+       .write          = exitcode_proc_write,
+};
+
 static int make_proc_exitcode(void)
 {
        struct proc_dir_entry *ent;
 
-       ent = create_proc_entry("exitcode", 0600, NULL);
+       ent = proc_create("exitcode", 0600, NULL, &exitcode_proc_fops);
        if (ent == NULL) {
                printk(KERN_WARNING "make_proc_exitcode : Failed to register "
                       "/proc/exitcode\n");
                return 0;
        }
-
-       ent->read_proc = read_proc_exitcode;
-       ent->write_proc = write_proc_exitcode;
-
        return 0;
 }