From cf7732e4cc14b56d593ff53352673e1fd5e3ba52 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 10 Oct 2007 02:29:29 -0700 Subject: [PATCH] [NET]: Make core networking code use seq_open_private This concerns the ipv4 and ipv6 code mostly, but also the netlink and unix sockets. The netlink code is an example of how to use the __seq_open_private() call - it saves the net namespace on this private. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/arp.c | 20 ++------------------ net/ipv4/fib_hash.c | 20 ++------------------ net/ipv4/fib_trie.c | 42 ++++-------------------------------------- net/ipv4/igmp.c | 38 ++++---------------------------------- net/ipv4/ipmr.c | 43 ++++--------------------------------------- net/ipv4/ipvs/ip_vs_ctl.c | 20 ++------------------ net/ipv4/raw.c | 20 ++------------------ net/ipv4/route.c | 19 ++----------------- net/ipv6/addrconf.c | 20 ++------------------ net/ipv6/anycast.c | 20 ++------------------ net/ipv6/ip6_flowlabel.c | 20 ++------------------ net/ipv6/mcast.c | 40 ++++------------------------------------ net/ipv6/raw.c | 17 ++--------------- net/netlink/af_netlink.c | 13 ++----------- net/unix/af_unix.c | 20 +------------------- 15 files changed, 37 insertions(+), 335 deletions(-) diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index d824819..36d6798 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -1378,24 +1378,8 @@ static const struct seq_operations arp_seq_ops = { static int arp_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct neigh_seq_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &arp_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &arp_seq_ops, + sizeof(struct neigh_seq_state)); } static const struct file_operations arp_seq_fops = { diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c index 9fafbee..527a6e0 100644 --- a/net/ipv4/fib_hash.c +++ b/net/ipv4/fib_hash.c @@ -1039,24 +1039,8 @@ static const struct seq_operations fib_seq_ops = { static int fib_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct fib_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &fib_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &fib_seq_ops, + sizeof(struct fib_iter_state)); } static const struct file_operations fib_seq_fops = { diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index be34bd5..81a8285 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -2379,25 +2379,8 @@ static const struct seq_operations fib_trie_seq_ops = { static int fib_trie_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct fib_trie_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &fib_trie_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; - memset(s, 0, sizeof(*s)); -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &fib_trie_seq_ops, + sizeof(struct fib_trie_iter)); } static const struct file_operations fib_trie_fops = { @@ -2500,25 +2483,8 @@ static const struct seq_operations fib_route_seq_ops = { static int fib_route_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct fib_trie_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &fib_route_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; - memset(s, 0, sizeof(*s)); -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &fib_route_seq_ops, + sizeof(struct fib_trie_iter)); } static const struct file_operations fib_route_fops = { diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 2b6e59c..7dbc282 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -2410,23 +2410,8 @@ static const struct seq_operations igmp_mc_seq_ops = { static int igmp_mc_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp_mc_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - rc = seq_open(file, &igmp_mc_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &igmp_mc_seq_ops, + sizeof(struct igmp_mc_iter_state)); } static const struct file_operations igmp_mc_seq_fops = { @@ -2584,23 +2569,8 @@ static const struct seq_operations igmp_mcf_seq_ops = { static int igmp_mcf_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp_mcf_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - rc = seq_open(file, &igmp_mcf_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &igmp_mcf_seq_ops, + sizeof(struct igmp_mcf_iter_state)); } static const struct file_operations igmp_mcf_seq_fops = { diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index b8b4b49..37bb497 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1714,26 +1714,8 @@ static const struct seq_operations ipmr_vif_seq_ops = { static int ipmr_vif_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct ipmr_vif_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &ipmr_vif_seq_ops); - if (rc) - goto out_kfree; - - s->ct = 0; - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; - + return seq_open_private(file, &ipmr_vif_seq_ops, + sizeof(struct ipmr_vif_iter)); } static const struct file_operations ipmr_vif_fops = { @@ -1877,25 +1859,8 @@ static const struct seq_operations ipmr_mfc_seq_ops = { static int ipmr_mfc_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct ipmr_mfc_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &ipmr_mfc_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; - + return seq_open_private(file, &ipmr_mfc_seq_ops, + sizeof(struct ipmr_mfc_iter)); } static const struct file_operations ipmr_mfc_fops = { diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c index 61d023d..7345fc2 100644 --- a/net/ipv4/ipvs/ip_vs_ctl.c +++ b/net/ipv4/ipvs/ip_vs_ctl.c @@ -1792,24 +1792,8 @@ static const struct seq_operations ip_vs_info_seq_ops = { static int ip_vs_info_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct ip_vs_iter *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &ip_vs_info_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &ip_vs_info_seq_ops, + sizeof(struct ip_vs_iter)); } static const struct file_operations ip_vs_info_fops = { diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index 07070c7..3916fac 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -902,24 +902,8 @@ static const struct seq_operations raw_seq_ops = { static int raw_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct raw_iter_state *s; - - s = kzalloc(sizeof(*s), GFP_KERNEL); - if (!s) - goto out; - rc = seq_open(file, &raw_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &raw_seq_ops, + sizeof(struct raw_iter_state)); } static const struct file_operations raw_seq_fops = { diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 307e1f1..21b12de 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -375,23 +375,8 @@ static const struct seq_operations rt_cache_seq_ops = { static int rt_cache_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct rt_cache_iter_state *s; - - s = kzalloc(sizeof(*s), GFP_KERNEL); - if (!s) - goto out; - rc = seq_open(file, &rt_cache_seq_ops); - if (rc) - goto out_kfree; - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &rt_cache_seq_ops, + sizeof(struct rt_cache_iter_state)); } static const struct file_operations rt_cache_seq_fops = { diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 6d5c3c2..8b2d760 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2806,24 +2806,8 @@ static const struct seq_operations if6_seq_ops = { static int if6_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct if6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &if6_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &if6_seq_ops, + sizeof(struct if6_iter_state)); } static const struct file_operations if6_fops = { diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c index 5810852..f915c4d 100644 --- a/net/ipv6/anycast.c +++ b/net/ipv6/anycast.c @@ -549,24 +549,8 @@ static const struct seq_operations ac6_seq_ops = { static int ac6_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct ac6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &ac6_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &ac6_seq_ops, + sizeof(struct ac6_iter_state)); } static const struct file_operations ac6_seq_fops = { diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index 1791399..217d60f 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -658,24 +658,8 @@ static const struct seq_operations ip6fl_seq_ops = { static int ip6fl_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct ip6fl_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &ip6fl_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &ip6fl_seq_ops, + sizeof(struct ip6fl_iter_state)); } static const struct file_operations ip6fl_seq_fops = { diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index cc8d4e2..331d728 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2426,24 +2426,8 @@ static const struct seq_operations igmp6_mc_seq_ops = { static int igmp6_mc_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp6_mc_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &igmp6_mc_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &igmp6_mc_seq_ops, + sizeof(struct igmp6_mc_iter_state)); } static const struct file_operations igmp6_mc_seq_fops = { @@ -2600,24 +2584,8 @@ static const struct seq_operations igmp6_mcf_seq_ops = { static int igmp6_mcf_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp6_mcf_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - - rc = seq_open(file, &igmp6_mcf_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &igmp6_mcf_seq_ops, + sizeof(struct igmp6_mcf_iter_state)); } static const struct file_operations igmp6_mcf_seq_fops = { diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index bdd0974..ca24ef1 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -1289,21 +1289,8 @@ static const struct seq_operations raw6_seq_ops = { static int raw6_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct raw6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - if (!s) - goto out; - rc = seq_open(file, &raw6_seq_ops); - if (rc) - goto out_kfree; - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_private(file, &raw6_seq_ops, + sizeof(struct raw6_iter_state)); } static const struct file_operations raw6_seq_fops = { diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 3ef3282..f934f54 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1845,27 +1845,18 @@ static const struct seq_operations netlink_seq_ops = { static int netlink_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; struct nl_seq_iter *iter; - int err; - iter = kzalloc(sizeof(*iter), GFP_KERNEL); + iter = __seq_open_private(file, &netlink_seq_ops, sizeof(*iter)); if (!iter) return -ENOMEM; - err = seq_open(file, &netlink_seq_ops); - if (err) { - kfree(iter); - return err; - } - - seq = file->private_data; - seq->private = iter; iter->net = get_proc_net(inode); if (!iter->net) { seq_release_private(inode, file); return -ENXIO; } + return 0; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 10e7312..2b57eaf 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -2086,25 +2086,7 @@ static const struct seq_operations unix_seq_ops = { static int unix_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - int *iter = kmalloc(sizeof(int), GFP_KERNEL); - - if (!iter) - goto out; - - rc = seq_open(file, &unix_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = iter; - *iter = 0; -out: - return rc; -out_kfree: - kfree(iter); - goto out; + return seq_open_private(file, &unix_seq_ops, sizeof(int)); } static const struct file_operations unix_seq_fops = { -- 2.7.4