X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fseq_file.h;h=83783ab0f5524d7ad5e4e3092aa1790cdec527c9;hb=7616ee95f27a04fd5a6434e9ef4a82cec4b2807c;hp=b95f6eb7254cd889bfc5c9db9ab2d6029e0f2994;hpb=ae574a5d7aa1d80469dfcbaa757db2bea536ee66;p=linux-2.6

diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index b95f6eb725..83783ab0f5 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -20,7 +20,7 @@ struct seq_file {
 	loff_t index;
 	loff_t version;
 	struct mutex lock;
-	struct seq_operations *op;
+	const struct seq_operations *op;
 	void *private;
 };
 
@@ -31,7 +31,7 @@ struct seq_operations {
 	int (*show) (struct seq_file *m, void *v);
 };
 
-int seq_open(struct file *, struct seq_operations *);
+int seq_open(struct file *, const struct seq_operations *);
 ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
 loff_t seq_lseek(struct file *, loff_t, int);
 int seq_release(struct inode *, struct file *);
@@ -50,5 +50,16 @@ int seq_release_private(struct inode *, struct file *);
 
 #define SEQ_START_TOKEN ((void *)1)
 
+/*
+ * Helpers for iteration over list_head-s in seq_files
+ */
+
+extern struct list_head *seq_list_start(struct list_head *head,
+		loff_t pos);
+extern struct list_head *seq_list_start_head(struct list_head *head,
+		loff_t pos);
+extern struct list_head *seq_list_next(void *v, struct list_head *head,
+		loff_t *ppos);
+
 #endif
 #endif