forked from mirrors/linux
sctp: Make the proc files per network namespace.
- Convert all of the files under /proc/net/sctp to be per network namespace. - Don't print anything for /proc/net/sctp/snmp except in the initial network namespaces as the snmp counters still have to be converted to be per network namespace. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
David S. Miller
parent
632c928a6a
commit
13d782f6b4
5 changed files with 97 additions and 85 deletions
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@ -2,8 +2,13 @@
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#define __NETNS_SCTP_H__
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struct sock;
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struct proc_dir_entry;
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struct netns_sctp {
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#ifdef CONFIG_PROC_FS
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struct proc_dir_entry *proc_net_sctp;
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#endif
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/* This is the global socket data structure used for responding to
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* the Out-of-the-blue (OOTB) packets. A control sock will be created
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* for this socket at the initialization time.
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@ -172,14 +172,14 @@ void sctp_backlog_migrate(struct sctp_association *assoc,
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/*
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* sctp/proc.c
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*/
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int sctp_snmp_proc_init(void);
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void sctp_snmp_proc_exit(void);
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int sctp_eps_proc_init(void);
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void sctp_eps_proc_exit(void);
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int sctp_assocs_proc_init(void);
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void sctp_assocs_proc_exit(void);
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int sctp_remaddr_proc_init(void);
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void sctp_remaddr_proc_exit(void);
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int sctp_snmp_proc_init(struct net *net);
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void sctp_snmp_proc_exit(struct net *net);
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int sctp_eps_proc_init(struct net *net);
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void sctp_eps_proc_exit(struct net *net);
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int sctp_assocs_proc_init(struct net *net);
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void sctp_assocs_proc_exit(struct net *net);
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int sctp_remaddr_proc_init(struct net *net);
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void sctp_remaddr_proc_exit(struct net *net);
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/*
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@ -360,16 +360,16 @@ atomic_t sctp_dbg_objcnt_## name = ATOMIC_INIT(0)
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#define SCTP_DBG_OBJCNT_ENTRY(name) \
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{.label= #name, .counter= &sctp_dbg_objcnt_## name}
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void sctp_dbg_objcnt_init(void);
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void sctp_dbg_objcnt_exit(void);
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void sctp_dbg_objcnt_init(struct net *);
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void sctp_dbg_objcnt_exit(struct net *);
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#else
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#define SCTP_DBG_OBJCNT_INC(name)
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#define SCTP_DBG_OBJCNT_DEC(name)
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static inline void sctp_dbg_objcnt_init(void) { return; }
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static inline void sctp_dbg_objcnt_exit(void) { return; }
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static inline void sctp_dbg_objcnt_init(struct net *) { return; }
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static inline void sctp_dbg_objcnt_exit(struct net *) { return; }
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#endif /* CONFIG_SCTP_DBG_OBJCOUNT */
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@ -585,7 +585,6 @@ for (pos = chunk->subh.fwdtsn_hdr->skip;\
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extern struct proto sctp_prot;
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extern struct proto sctpv6_prot;
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extern struct proc_dir_entry *proc_net_sctp;
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void sctp_put_port(struct sock *sk);
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extern struct idr sctp_assocs_id;
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@ -129,20 +129,20 @@ static const struct file_operations sctp_objcnt_ops = {
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};
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/* Initialize the objcount in the proc filesystem. */
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void sctp_dbg_objcnt_init(void)
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void sctp_dbg_objcnt_init(struct net *net)
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{
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struct proc_dir_entry *ent;
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ent = proc_create("sctp_dbg_objcnt", 0,
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proc_net_sctp, &sctp_objcnt_ops);
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net->sctp.proc_net_sctp, &sctp_objcnt_ops);
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if (!ent)
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pr_warn("sctp_dbg_objcnt: Unable to create /proc entry.\n");
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}
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/* Cleanup the objcount entry in the proc filesystem. */
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void sctp_dbg_objcnt_exit(void)
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void sctp_dbg_objcnt_exit(struct net *net)
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{
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remove_proc_entry("sctp_dbg_objcnt", proc_net_sctp);
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remove_proc_entry("sctp_dbg_objcnt", net->sctp.proc_net_sctp);
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}
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@ -80,8 +80,12 @@ static const struct snmp_mib sctp_snmp_list[] = {
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/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
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static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
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{
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struct net *net = seq->private;
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int i;
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if (!net_eq(net, &init_net))
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return 0;
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for (i = 0; sctp_snmp_list[i].name != NULL; i++)
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seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
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snmp_fold_field((void __percpu **)sctp_statistics,
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@ -93,7 +97,7 @@ static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
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/* Initialize the seq file operations for 'snmp' object. */
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static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
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{
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return single_open(file, sctp_snmp_seq_show, NULL);
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return single_open_net(inode, file, sctp_snmp_seq_show);
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}
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static const struct file_operations sctp_snmp_seq_fops = {
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@ -105,11 +109,12 @@ static const struct file_operations sctp_snmp_seq_fops = {
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};
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/* Set up the proc fs entry for 'snmp' object. */
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int __init sctp_snmp_proc_init(void)
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int __net_init sctp_snmp_proc_init(struct net *net)
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{
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struct proc_dir_entry *p;
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p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
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p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
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&sctp_snmp_seq_fops);
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if (!p)
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return -ENOMEM;
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@ -117,9 +122,9 @@ int __init sctp_snmp_proc_init(void)
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}
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/* Cleanup the proc fs entry for 'snmp' object. */
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void sctp_snmp_proc_exit(void)
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void sctp_snmp_proc_exit(struct net *net)
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{
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remove_proc_entry("snmp", proc_net_sctp);
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remove_proc_entry("snmp", net->sctp.proc_net_sctp);
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}
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/* Dump local addresses of an association/endpoint. */
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@ -197,6 +202,7 @@ static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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/* Display sctp endpoints (/proc/net/sctp/eps). */
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static int sctp_eps_seq_show(struct seq_file *seq, void *v)
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{
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struct seq_net_private *priv = seq->private;
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struct sctp_hashbucket *head;
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struct sctp_ep_common *epb;
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struct sctp_endpoint *ep;
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@ -213,6 +219,8 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
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sctp_for_each_hentry(epb, node, &head->chain) {
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ep = sctp_ep(epb);
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sk = epb->sk;
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if (!net_eq(sock_net(sk), priv->net))
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continue;
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seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
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sctp_sk(sk)->type, sk->sk_state, hash,
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epb->bind_addr.port,
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@ -238,7 +246,8 @@ static const struct seq_operations sctp_eps_ops = {
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/* Initialize the seq file operations for 'eps' object. */
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static int sctp_eps_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &sctp_eps_ops);
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return seq_open_net(inode, file, &sctp_eps_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations sctp_eps_seq_fops = {
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@ -249,11 +258,12 @@ static const struct file_operations sctp_eps_seq_fops = {
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};
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/* Set up the proc fs entry for 'eps' object. */
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int __init sctp_eps_proc_init(void)
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int __net_init sctp_eps_proc_init(struct net *net)
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{
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struct proc_dir_entry *p;
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p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
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p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
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&sctp_eps_seq_fops);
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if (!p)
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return -ENOMEM;
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@ -261,9 +271,9 @@ int __init sctp_eps_proc_init(void)
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}
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/* Cleanup the proc fs entry for 'eps' object. */
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void sctp_eps_proc_exit(void)
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void sctp_eps_proc_exit(struct net *net)
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{
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remove_proc_entry("eps", proc_net_sctp);
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remove_proc_entry("eps", net->sctp.proc_net_sctp);
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}
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@ -300,6 +310,7 @@ static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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/* Display sctp associations (/proc/net/sctp/assocs). */
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static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
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{
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struct seq_net_private *priv = seq->private;
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struct sctp_hashbucket *head;
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struct sctp_ep_common *epb;
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struct sctp_association *assoc;
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@ -316,6 +327,8 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
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sctp_for_each_hentry(epb, node, &head->chain) {
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assoc = sctp_assoc(epb);
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sk = epb->sk;
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if (!net_eq(sock_net(sk), priv->net))
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continue;
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seq_printf(seq,
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"%8pK %8pK %-3d %-3d %-2d %-4d "
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"%4d %8d %8d %7d %5lu %-5d %5d ",
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@ -354,7 +367,8 @@ static const struct seq_operations sctp_assoc_ops = {
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/* Initialize the seq file operations for 'assocs' object. */
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static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &sctp_assoc_ops);
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return seq_open_net(inode, file, &sctp_assoc_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations sctp_assocs_seq_fops = {
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@ -365,11 +379,11 @@ static const struct file_operations sctp_assocs_seq_fops = {
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};
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/* Set up the proc fs entry for 'assocs' object. */
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int __init sctp_assocs_proc_init(void)
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int __net_init sctp_assocs_proc_init(struct net *net)
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{
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struct proc_dir_entry *p;
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p = proc_create("assocs", S_IRUGO, proc_net_sctp,
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p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
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&sctp_assocs_seq_fops);
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if (!p)
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return -ENOMEM;
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@ -378,9 +392,9 @@ int __init sctp_assocs_proc_init(void)
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}
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/* Cleanup the proc fs entry for 'assocs' object. */
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void sctp_assocs_proc_exit(void)
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void sctp_assocs_proc_exit(struct net *net)
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{
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remove_proc_entry("assocs", proc_net_sctp);
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remove_proc_entry("assocs", net->sctp.proc_net_sctp);
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}
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static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
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@ -412,6 +426,7 @@ static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
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static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
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{
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struct seq_net_private *priv = seq->private;
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struct sctp_hashbucket *head;
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struct sctp_ep_common *epb;
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struct sctp_association *assoc;
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@ -426,6 +441,8 @@ static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
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sctp_local_bh_disable();
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read_lock(&head->lock);
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sctp_for_each_hentry(epb, node, &head->chain) {
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if (!net_eq(sock_net(epb->sk), priv->net))
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continue;
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assoc = sctp_assoc(epb);
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list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
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transports) {
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@ -489,14 +506,15 @@ static const struct seq_operations sctp_remaddr_ops = {
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};
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/* Cleanup the proc fs entry for 'remaddr' object. */
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void sctp_remaddr_proc_exit(void)
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void sctp_remaddr_proc_exit(struct net *net)
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{
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remove_proc_entry("remaddr", proc_net_sctp);
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remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
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}
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static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &sctp_remaddr_ops);
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return seq_open_net(inode, file, &sctp_remaddr_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations sctp_remaddr_seq_fops = {
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@ -506,11 +524,12 @@ static const struct file_operations sctp_remaddr_seq_fops = {
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.release = seq_release,
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};
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int __init sctp_remaddr_proc_init(void)
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int __net_init sctp_remaddr_proc_init(struct net *net)
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{
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struct proc_dir_entry *p;
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p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
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p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
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&sctp_remaddr_seq_fops);
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if (!p)
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return -ENOMEM;
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return 0;
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@ -71,10 +71,6 @@
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struct sctp_globals sctp_globals __read_mostly;
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DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly;
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#ifdef CONFIG_PROC_FS
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struct proc_dir_entry *proc_net_sctp;
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#endif
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struct idr sctp_assocs_id;
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DEFINE_SPINLOCK(sctp_assocs_id_lock);
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@ -91,60 +87,52 @@ int sysctl_sctp_rmem[3];
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int sysctl_sctp_wmem[3];
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/* Set up the proc fs entry for the SCTP protocol. */
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static __init int sctp_proc_init(void)
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static __net_init int sctp_proc_init(struct net *net)
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{
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#ifdef CONFIG_PROC_FS
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if (!proc_net_sctp) {
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proc_net_sctp = proc_mkdir("sctp", init_net.proc_net);
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if (!proc_net_sctp)
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goto out_free_percpu;
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}
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if (sctp_snmp_proc_init())
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net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net);
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if (!net->sctp.proc_net_sctp)
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goto out_proc_net_sctp;
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if (sctp_snmp_proc_init(net))
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goto out_snmp_proc_init;
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if (sctp_eps_proc_init())
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if (sctp_eps_proc_init(net))
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goto out_eps_proc_init;
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if (sctp_assocs_proc_init())
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if (sctp_assocs_proc_init(net))
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goto out_assocs_proc_init;
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if (sctp_remaddr_proc_init())
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if (sctp_remaddr_proc_init(net))
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goto out_remaddr_proc_init;
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return 0;
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out_remaddr_proc_init:
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sctp_assocs_proc_exit();
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sctp_assocs_proc_exit(net);
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out_assocs_proc_init:
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sctp_eps_proc_exit();
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sctp_eps_proc_exit(net);
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out_eps_proc_init:
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sctp_snmp_proc_exit();
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sctp_snmp_proc_exit(net);
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out_snmp_proc_init:
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if (proc_net_sctp) {
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proc_net_sctp = NULL;
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remove_proc_entry("sctp", init_net.proc_net);
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}
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out_free_percpu:
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#else
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return 0;
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#endif /* CONFIG_PROC_FS */
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remove_proc_entry("sctp", net->proc_net);
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net->sctp.proc_net_sctp = NULL;
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out_proc_net_sctp:
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return -ENOMEM;
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#endif /* CONFIG_PROC_FS */
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return 0;
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}
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/* Clean up the proc fs entry for the SCTP protocol.
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* Note: Do not make this __exit as it is used in the init error
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* path.
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*/
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static void sctp_proc_exit(void)
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static void sctp_proc_exit(struct net *net)
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{
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#ifdef CONFIG_PROC_FS
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sctp_snmp_proc_exit();
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sctp_eps_proc_exit();
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sctp_assocs_proc_exit();
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sctp_remaddr_proc_exit();
|
||||
sctp_snmp_proc_exit(net);
|
||||
sctp_eps_proc_exit(net);
|
||||
sctp_assocs_proc_exit(net);
|
||||
sctp_remaddr_proc_exit(net);
|
||||
|
||||
if (proc_net_sctp) {
|
||||
proc_net_sctp = NULL;
|
||||
remove_proc_entry("sctp", init_net.proc_net);
|
||||
}
|
||||
remove_proc_entry("sctp", net->proc_net);
|
||||
net->sctp.proc_net_sctp = NULL;
|
||||
#endif
|
||||
}
|
||||
|
||||
|
|
@ -1180,6 +1168,13 @@ static int sctp_net_init(struct net *net)
|
|||
{
|
||||
int status;
|
||||
|
||||
/* Initialize proc fs directory. */
|
||||
status = sctp_proc_init(net);
|
||||
if (status)
|
||||
goto err_init_proc;
|
||||
|
||||
sctp_dbg_objcnt_init(net);
|
||||
|
||||
/* Initialize the control inode/socket for handling OOTB packets. */
|
||||
if ((status = sctp_ctl_sock_init(net))) {
|
||||
pr_err("Failed to initialize the SCTP control sock\n");
|
||||
|
|
@ -1202,6 +1197,9 @@ static int sctp_net_init(struct net *net)
|
|||
return 0;
|
||||
|
||||
err_ctl_sock_init:
|
||||
sctp_dbg_objcnt_exit(net);
|
||||
sctp_proc_exit(net);
|
||||
err_init_proc:
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
@ -1213,6 +1211,10 @@ static void sctp_net_exit(struct net *net)
|
|||
|
||||
/* Free the control endpoint. */
|
||||
inet_ctl_sock_destroy(net->sctp.ctl_sock);
|
||||
|
||||
sctp_dbg_objcnt_exit(net);
|
||||
|
||||
sctp_proc_exit(net);
|
||||
}
|
||||
|
||||
static struct pernet_operations sctp_net_ops = {
|
||||
|
|
@ -1259,14 +1261,6 @@ SCTP_STATIC __init int sctp_init(void)
|
|||
if (status)
|
||||
goto err_percpu_counter_init;
|
||||
|
||||
/* Initialize proc fs directory. */
|
||||
status = sctp_proc_init();
|
||||
if (status)
|
||||
goto err_init_proc;
|
||||
|
||||
/* Initialize object count debugging. */
|
||||
sctp_dbg_objcnt_init();
|
||||
|
||||
/*
|
||||
* 14. Suggested SCTP Protocol Parameter Values
|
||||
*/
|
||||
|
|
@ -1476,9 +1470,6 @@ SCTP_STATIC __init int sctp_init(void)
|
|||
get_order(sctp_assoc_hashsize *
|
||||
sizeof(struct sctp_hashbucket)));
|
||||
err_ahash_alloc:
|
||||
sctp_dbg_objcnt_exit();
|
||||
sctp_proc_exit();
|
||||
err_init_proc:
|
||||
percpu_counter_destroy(&sctp_sockets_allocated);
|
||||
err_percpu_counter_init:
|
||||
cleanup_sctp_mibs();
|
||||
|
|
@ -1520,9 +1511,7 @@ SCTP_STATIC __exit void sctp_exit(void)
|
|||
get_order(sctp_port_hashsize *
|
||||
sizeof(struct sctp_bind_hashbucket)));
|
||||
|
||||
sctp_dbg_objcnt_exit();
|
||||
percpu_counter_destroy(&sctp_sockets_allocated);
|
||||
sctp_proc_exit();
|
||||
cleanup_sctp_mibs();
|
||||
|
||||
rcu_barrier(); /* Wait for completion of call_rcu()'s */
|
||||
|
|
|
|||
Loading…
Reference in a new issue