static int traverse(struct seq_file *m, loff_t offset)
{
- loff_t pos = 0;
+ loff_t pos = 0, index;
int error = 0;
void *p;
m->version = 0;
- m->index = 0;
+ index = 0;
m->count = m->from = 0;
- if (!offset)
+ if (!offset) {
+ m->index = index;
return 0;
+ }
if (!m->buf) {
m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL);
if (!m->buf)
return -ENOMEM;
}
- p = m->op->start(m, &m->index);
+ p = m->op->start(m, &index);
while (p) {
error = PTR_ERR(p);
if (IS_ERR(p))
if (pos + m->count > offset) {
m->from = offset - pos;
m->count -= m->from;
+ m->index = index;
break;
}
pos += m->count;
m->count = 0;
if (pos == offset) {
- m->index++;
+ index++;
+ m->index = index;
break;
}
- p = m->op->next(m, p, &m->index);
+ p = m->op->next(m, p, &index);
}
m->op->stop(m, p);
return error;
}
}
}
- mutex_unlock(&m->lock);
file->f_version = m->version;
+ mutex_unlock(&m->lock);
return retval;
}
EXPORT_SYMBOL(seq_lseek);
}
EXPORT_SYMBOL(seq_release_private);
+void *__seq_open_private(struct file *f, const struct seq_operations *ops,
+ int psize)
+{
+ int rc;
+ void *private;
+ struct seq_file *seq;
+
+ private = kzalloc(psize, GFP_KERNEL);
+ if (private == NULL)
+ goto out;
+
+ rc = seq_open(f, ops);
+ if (rc < 0)
+ goto out_free;
+
+ seq = f->private_data;
+ seq->private = private;
+ return private;
+
+out_free:
+ kfree(private);
+out:
+ return NULL;
+}
+EXPORT_SYMBOL(__seq_open_private);
+
+int seq_open_private(struct file *filp, const struct seq_operations *ops,
+ int psize)
+{
+ return __seq_open_private(filp, ops, psize) ? 0 : -ENOMEM;
+}
+EXPORT_SYMBOL(seq_open_private);
+
int seq_putc(struct seq_file *m, char c)
{
if (m->count < m->size) {