From a2be75c182cd16bc104919e33451ffda8b6f65b4 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Fri, 28 Mar 2008 18:25:06 -0700 Subject: [PATCH] [UDP]: Cleanup /proc/udp[6] creation/removal. Replace seq_open with seq_open_net and remove udp_seq_release completely. seq_release_net will do this job just fine. Signed-off-by: Denis V. Lunev Signed-off-by: David S. Miller --- net/ipv4/udp.c | 46 +++++++++------------------------------------- 1 file changed, 9 insertions(+), 37 deletions(-) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index bae94b3eaa43..e716d2d55e1e 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1576,46 +1576,18 @@ static void udp_seq_stop(struct seq_file *seq, void *v) static int udp_seq_open(struct inode *inode, struct file *file) { struct udp_seq_afinfo *afinfo = PDE(inode)->data; - struct seq_file *seq; - struct net *net; - int rc = -ENOMEM; - struct udp_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; + struct udp_iter_state *s; + int err; - rc = -ENXIO; - net = get_proc_net(inode); - if (!net) - goto out_kfree; + err = seq_open_net(inode, file, &afinfo->seq_ops, + sizeof(struct udp_iter_state)); + if (err < 0) + return err; + s = ((struct seq_file *)file->private_data)->private; s->family = afinfo->family; s->hashtable = afinfo->hashtable; - s->p.net = net; - - rc = seq_open(file, &afinfo->seq_ops); - if (rc) - goto out_put_net; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_put_net: - put_net(net); -out_kfree: - kfree(s); - goto out; -} - -static int udp_seq_release(struct inode *inode, struct file *file) -{ - struct seq_file *seq = file->private_data; - struct udp_iter_state *s = seq->private; - - put_net(s->p.net); - seq_release_private(inode, file); - return 0; + return err; } /* ------------------------------------------------------------------------ */ @@ -1628,7 +1600,7 @@ int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo) afinfo->seq_fops->open = udp_seq_open; afinfo->seq_fops->read = seq_read; afinfo->seq_fops->llseek = seq_lseek; - afinfo->seq_fops->release = udp_seq_release; + afinfo->seq_fops->release = seq_release_net; afinfo->seq_ops.start = udp_seq_start; afinfo->seq_ops.next = udp_seq_next; -- 2.20.1