proc_net.c (c3506372277779fccbffee2475400fcd689d5738) proc_net.c (3617d9496cd92dcca4d0893191d95554590d8d9f)
1/*
2 * linux/fs/proc/net.c
3 *
4 * Copyright (C) 2007
5 *
6 * Author: Eric Biederman <ebiederm@xmission.com>
7 *
8 * proc net directory handling functions

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88 return NULL;
89 p->proc_fops = &proc_net_seq_fops;
90 p->seq_ops = ops;
91 p->state_size = state_size;
92 return proc_register(parent, p);
93}
94EXPORT_SYMBOL_GPL(proc_create_net_data);
95
1/*
2 * linux/fs/proc/net.c
3 *
4 * Copyright (C) 2007
5 *
6 * Author: Eric Biederman <ebiederm@xmission.com>
7 *
8 * proc net directory handling functions

--- 79 unchanged lines hidden (view full) ---

88 return NULL;
89 p->proc_fops = &proc_net_seq_fops;
90 p->seq_ops = ops;
91 p->state_size = state_size;
92 return proc_register(parent, p);
93}
94EXPORT_SYMBOL_GPL(proc_create_net_data);
95
96int single_open_net(struct inode *inode, struct file *file,
97 int (*show)(struct seq_file *, void *))
96static int single_open_net(struct inode *inode, struct file *file)
98{
97{
99 int err;
98 struct proc_dir_entry *de = PDE(inode);
100 struct net *net;
99 struct net *net;
100 int err;
101
101
102 err = -ENXIO;
103 net = get_proc_net(inode);
102 net = get_proc_net(inode);
104 if (net == NULL)
105 goto err_net;
103 if (!net)
104 return -ENXIO;
106
105
107 err = single_open(file, show, net);
108 if (err < 0)
109 goto err_open;
110
111 return 0;
112
113err_open:
114 put_net(net);
115err_net:
106 err = single_open(file, de->single_show, net);
107 if (err)
108 put_net(net);
116 return err;
117}
109 return err;
110}
118EXPORT_SYMBOL_GPL(single_open_net);
119
111
120int single_release_net(struct inode *ino, struct file *f)
112static int single_release_net(struct inode *ino, struct file *f)
121{
122 struct seq_file *seq = f->private_data;
123 put_net(seq->private);
124 return single_release(ino, f);
125}
113{
114 struct seq_file *seq = f->private_data;
115 put_net(seq->private);
116 return single_release(ino, f);
117}
126EXPORT_SYMBOL_GPL(single_release_net);
127
118
119static const struct file_operations proc_net_single_fops = {
120 .open = single_open_net,
121 .read = seq_read,
122 .llseek = seq_lseek,
123 .release = single_release_net,
124};
125
126struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode,
127 struct proc_dir_entry *parent,
128 int (*show)(struct seq_file *, void *), void *data)
129{
130 struct proc_dir_entry *p;
131
132 p = proc_create_reg(name, mode, &parent, data);
133 if (!p)
134 return NULL;
135 p->proc_fops = &proc_net_single_fops;
136 p->single_show = show;
137 return proc_register(parent, p);
138}
139EXPORT_SYMBOL_GPL(proc_create_net_single);
140
128static struct net *get_proc_task_net(struct inode *dir)
129{
130 struct task_struct *task;
131 struct nsproxy *ns;
132 struct net *net = NULL;
133
134 rcu_read_lock();
135 task = pid_task(proc_pid(dir), PIDTYPE_PID);

--- 132 unchanged lines hidden --- 		141static struct net *get_proc_task_net(struct inode *dir)
142{
143 struct task_struct *task;
144 struct nsproxy *ns;
145 struct net *net = NULL;
146
147 rcu_read_lock();
148 task = pid_task(proc_pid(dir), PIDTYPE_PID);

--- 132 unchanged lines hidden ---