X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fseq_file.c;h=6c959275f2d0ef41577d9cdb09086f3b9c670883;hb=9ecc2738ac2371f88dff5d48914b4e35c45203cd;hp=a1a4cfe1921040d6044657e6c235e2f5d55f8292;hpb=9a38e989b8ce04923f919fc2a8a24eb07fb484e2;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/seq_file.c b/fs/seq_file.c
index a1a4cfe19210..6c959275f2d0 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -513,7 +513,7 @@ int seq_bitmap(struct seq_file *m, const unsigned long *bits,
 }
 EXPORT_SYMBOL(seq_bitmap);
 
-int seq_bitmap_list(struct seq_file *m, unsigned long *bits,
+int seq_bitmap_list(struct seq_file *m, const unsigned long *bits,
 		unsigned int nr_bits)
 {
 	if (m->count < m->size) {
@@ -640,6 +640,26 @@ int seq_puts(struct seq_file *m, const char *s)
 }
 EXPORT_SYMBOL(seq_puts);
 
+/**
+ * seq_write - write arbitrary data to buffer
+ * @seq: seq_file identifying the buffer to which data should be written
+ * @data: data address
+ * @len: number of bytes
+ *
+ * Return 0 on success, non-zero otherwise.
+ */
+int seq_write(struct seq_file *seq, const void *data, size_t len)
+{
+	if (seq->count + len < seq->size) {
+		memcpy(seq->buf + seq->count, data, len);
+		seq->count += len;
+		return 0;
+	}
+	seq->count = seq->size;
+	return -1;
+}
+EXPORT_SYMBOL(seq_write);
+
 struct list_head *seq_list_start(struct list_head *head, loff_t pos)
 {
 	struct list_head *lh;