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Diffstat (limited to 'net/key/af_key.c')
-rw-r--r--net/key/af_key.c92
1 files changed, 57 insertions, 35 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 162fcea3324c..b3ac85e808ac 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3734,21 +3734,15 @@ static struct net_proto_family pfkey_family_ops = {
};
#ifdef CONFIG_PROC_FS
-static int pfkey_read_proc(char *buffer, char **start, off_t offset,
- int length, int *eof, void *data)
+static int pfkey_seq_show(struct seq_file *f, void *v)
{
- off_t pos = 0;
- off_t begin = 0;
- int len = 0;
struct sock *s;
- struct hlist_node *node;
-
- len += sprintf(buffer,"sk RefCnt Rmem Wmem User Inode\n");
-
- read_lock(&pfkey_table_lock);
- sk_for_each(s, node, &pfkey_table) {
- len += sprintf(buffer+len,"%p %-6d %-6u %-6u %-6u %-6lu",
+ s = (struct sock *)v;
+ if (v == SEQ_START_TOKEN)
+ seq_printf(f ,"sk RefCnt Rmem Wmem User Inode\n");
+ else
+ seq_printf(f ,"%p %-6d %-6u %-6u %-6u %-6lu\n",
s,
atomic_read(&s->sk_refcnt),
atomic_read(&s->sk_rmem_alloc),
@@ -3756,40 +3750,68 @@ static int pfkey_read_proc(char *buffer, char **start, off_t offset,
sock_i_uid(s),
sock_i_ino(s)
);
+ return 0;
+}
+
+static void *pfkey_seq_start(struct seq_file *f, loff_t *ppos)
+{
+ struct sock *s;
+ struct hlist_node *node;
+ loff_t pos = *ppos;
- buffer[len++] = '\n';
+ read_lock(&pfkey_table_lock);
+ if (pos == 0)
+ return SEQ_START_TOKEN;
- pos = begin + len;
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
- if(pos > offset + length)
- goto done;
- }
- *eof = 1;
+ sk_for_each(s, node, &pfkey_table)
+ if (pos-- == 1)
+ return s;
-done:
- read_unlock(&pfkey_table_lock);
+ return NULL;
+}
+
+static void *pfkey_seq_next(struct seq_file *f, void *v, loff_t *ppos)
+{
+ ++*ppos;
+ return (v == SEQ_START_TOKEN) ?
+ sk_head(&pfkey_table) :
+ sk_next((struct sock *)v);
+}
- *start = buffer + (offset - begin);
- len -= (offset - begin);
+static void pfkey_seq_stop(struct seq_file *f, void *v)
+{
+ read_unlock(&pfkey_table_lock);
+}
- if (len > length)
- len = length;
- if (len < 0)
- len = 0;
+static struct seq_operations pfkey_seq_ops = {
+ .start = pfkey_seq_start,
+ .next = pfkey_seq_next,
+ .stop = pfkey_seq_stop,
+ .show = pfkey_seq_show,
+};
- return len;
+static int pfkey_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &pfkey_seq_ops);
}
+static struct file_operations pfkey_proc_ops = {
+ .open = pfkey_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static int pfkey_init_proc(void)
{
- if (create_proc_read_entry("pfkey", 0, init_net.proc_net,
- pfkey_read_proc, NULL) == NULL)
+ struct proc_dir_entry *e;
+
+ e = create_proc_entry("pfkey", 0, init_net.proc_net);
+ if (e == NULL)
return -ENOMEM;
- else
- return 0;
+
+ e->proc_fops = &pfkey_proc_ops;
+ return 0;
}
static void pfkey_exit_proc(void)