From 80212d59e32a8a8e030c2ddc5861d8ff70542c56 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 2 Oct 2006 02:17:47 -0700 Subject: [PATCH] [PATCH] knfsd: define new nfsdfs file: portlist - contains list of ports This file will list all ports that nfsd has open. Default when TCP enabled will be ipv4 udp 0.0.0.0 2049 ipv4 tcp 0.0.0.0 2049 Later, the list of ports will be settable. 'portlist' chosen rather than 'ports', to avoid unnecessary confusion with non-mainline patches which created 'ports' with different semantics. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfsd/nfsctl.c | 20 ++++++++++++++++++++ include/linux/sunrpc/svcsock.h | 1 + net/sunrpc/svcsock.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 61 insertions(+) diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index d688177..d4041a0 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -23,10 +23,12 @@ #include #include #include +#include #include #include #include +#include #include #include #include @@ -51,6 +53,7 @@ enum { NFSD_Fh, NFSD_Threads, NFSD_Versions, + NFSD_Ports, /* * The below MUST come last. Otherwise we leave a hole in nfsd_files[] * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops @@ -74,6 +77,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size); static ssize_t write_filehandle(struct file *file, char *buf, size_t size); static ssize_t write_threads(struct file *file, char *buf, size_t size); static ssize_t write_versions(struct file *file, char *buf, size_t size); +static ssize_t write_ports(struct file *file, char *buf, size_t size); #ifdef CONFIG_NFSD_V4 static ssize_t write_leasetime(struct file *file, char *buf, size_t size); static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); @@ -90,6 +94,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = { [NFSD_Fh] = write_filehandle, [NFSD_Threads] = write_threads, [NFSD_Versions] = write_versions, + [NFSD_Ports] = write_ports, #ifdef CONFIG_NFSD_V4 [NFSD_Leasetime] = write_leasetime, [NFSD_RecoveryDir] = write_recoverydir, @@ -419,6 +424,20 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size) return len; } +static ssize_t write_ports(struct file *file, char *buf, size_t size) +{ + /* for now, ignore what was written and just + * return known ports + * AF proto address port + */ + int len = 0; + lock_kernel(); + if (nfsd_serv) + len = svc_sock_names(buf, nfsd_serv); + unlock_kernel(); + return len; +} + #ifdef CONFIG_NFSD_V4 extern time_t nfs4_leasetime(void); @@ -482,6 +501,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent) [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, + [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, #ifdef CONFIG_NFSD_V4 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index b4acb3d..3caf92d 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -61,5 +61,6 @@ int svc_recv(struct svc_serv *, struct svc_rqst *, long); int svc_send(struct svc_rqst *); void svc_drop(struct svc_rqst *); void svc_sock_update_bufs(struct svc_serv *serv); +int svc_sock_names(char *buf, struct svc_serv *serv); #endif /* SUNRPC_SVCSOCK_H */ diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 5b0fe1b..3ee4b78 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -429,6 +429,46 @@ out: } /* + * Report socket names for nfsdfs + */ +static int one_sock_name(char *buf, struct svc_sock *svsk) +{ + int len; + + switch(svsk->sk_sk->sk_family) { + case AF_INET: + len = sprintf(buf, "ipv4 %s %u.%u.%u.%u %d\n", + svsk->sk_sk->sk_protocol==IPPROTO_UDP? + "udp" : "tcp", + NIPQUAD(inet_sk(svsk->sk_sk)->rcv_saddr), + inet_sk(svsk->sk_sk)->num); + break; + default: + len = sprintf(buf, "*unknown-%d*\n", + svsk->sk_sk->sk_family); + } + return len; +} + +int +svc_sock_names(char *buf, struct svc_serv *serv) +{ + struct svc_sock *svsk; + int len = 0; + + if (!serv) + return 0; + spin_lock(&serv->sv_lock); + list_for_each_entry(svsk, &serv->sv_permsocks, sk_list) { + int onelen = one_sock_name(buf+len, svsk); + len += onelen; + } + spin_unlock(&serv->sv_lock); + return len; +} +EXPORT_SYMBOL(svc_sock_names); + +/* * Check input queue length */ static int -- 1.8.2.3