#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/metrics.h>
+#include <linux/sunrpc/xprtsock.h>
+#include <linux/sunrpc/xprtrdma.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_mount.h>
#include <linux/nfs4_mount.h>
#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/inet.h>
+#include <linux/in6.h>
+#include <net/ipv6.h>
#include <linux/nfs_xdr.h>
#include <linux/magic.h>
#include <linux/parser.h>
#define NFSDBG_FACILITY NFSDBG_VFS
-
-struct nfs_parsed_mount_data {
- int flags;
- int rsize, wsize;
- int timeo, retrans;
- int acregmin, acregmax,
- acdirmin, acdirmax;
- int namlen;
- unsigned int bsize;
- unsigned int auth_flavor_len;
- rpc_authflavor_t auth_flavors[1];
- char *client_address;
-
- struct {
- struct sockaddr_in address;
- unsigned int program;
- unsigned int version;
- unsigned short port;
- int protocol;
- } mount_server;
-
- struct {
- struct sockaddr_in address;
- char *hostname;
- char *export_path;
- unsigned int program;
- int protocol;
- } nfs_server;
-};
-
enum {
/* Mount options that take no arguments */
Opt_soft, Opt_hard,
Opt_ac, Opt_noac,
Opt_lock, Opt_nolock,
Opt_v2, Opt_v3,
- Opt_udp, Opt_tcp,
+ Opt_udp, Opt_tcp, Opt_rdma,
Opt_acl, Opt_noacl,
Opt_rdirplus, Opt_nordirplus,
Opt_sharecache, Opt_nosharecache,
Opt_actimeo,
Opt_namelen,
Opt_mountport,
- Opt_mountprog, Opt_mountvers,
- Opt_nfsprog, Opt_nfsvers,
+ Opt_mountvers,
+ Opt_nfsvers,
/* Mount options that take string arguments */
- Opt_sec, Opt_proto, Opt_mountproto,
- Opt_addr, Opt_mounthost, Opt_clientaddr,
+ Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
+ Opt_addr, Opt_mountaddr, Opt_clientaddr,
/* Mount options that are ignored */
Opt_userspace, Opt_deprecated,
{ Opt_v3, "v3" },
{ Opt_udp, "udp" },
{ Opt_tcp, "tcp" },
+ { Opt_rdma, "rdma" },
{ Opt_acl, "acl" },
{ Opt_noacl, "noacl" },
{ Opt_rdirplus, "rdirplus" },
{ Opt_userspace, "retry=%u" },
{ Opt_namelen, "namlen=%u" },
{ Opt_mountport, "mountport=%u" },
- { Opt_mountprog, "mountprog=%u" },
{ Opt_mountvers, "mountvers=%u" },
- { Opt_nfsprog, "nfsprog=%u" },
{ Opt_nfsvers, "nfsvers=%u" },
{ Opt_nfsvers, "vers=%u" },
{ Opt_addr, "addr=%s" },
{ Opt_clientaddr, "clientaddr=%s" },
{ Opt_mounthost, "mounthost=%s" },
+ { Opt_mountaddr, "mountaddr=%s" },
{ Opt_err, NULL }
};
enum {
- Opt_xprt_udp, Opt_xprt_tcp,
+ Opt_xprt_udp, Opt_xprt_tcp, Opt_xprt_rdma,
Opt_xprt_err
};
static match_table_t nfs_xprt_protocol_tokens = {
{ Opt_xprt_udp, "udp" },
{ Opt_xprt_tcp, "tcp" },
+ { Opt_xprt_rdma, "rdma" },
{ Opt_xprt_err, NULL }
};
static int nfs_xdev_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
static void nfs_kill_super(struct super_block *);
+static void nfs_put_super(struct super_block *);
static struct file_system_type nfs_fs_type = {
.owner = THIS_MODULE,
.alloc_inode = nfs_alloc_inode,
.destroy_inode = nfs_destroy_inode,
.write_inode = nfs_write_inode,
+ .put_super = nfs_put_super,
.statfs = nfs_statfs,
.clear_inode = nfs_clear_inode,
.umount_begin = nfs_umount_begin,
unregister_filesystem(&nfs_fs_type);
}
+void nfs_sb_active(struct nfs_server *server)
+{
+ atomic_inc(&server->active);
+}
+
+void nfs_sb_deactive(struct nfs_server *server)
+{
+ if (atomic_dec_and_test(&server->active))
+ wake_up(&server->active_wq);
+}
+
+static void nfs_put_super(struct super_block *sb)
+{
+ struct nfs_server *server = NFS_SB(sb);
+ /*
+ * Make sure there are no outstanding ops to this server.
+ * If so, wait for them to finish before allowing the
+ * unmount to continue.
+ */
+ wait_event(server->active_wq, atomic_read(&server->active) == 0);
+}
+
/*
* Deliver file system statistics to userspace
*/
const char *nostr;
} nfs_info[] = {
{ NFS_MOUNT_SOFT, ",soft", ",hard" },
- { NFS_MOUNT_INTR, ",intr", "" },
{ NFS_MOUNT_NOCTO, ",nocto", "" },
{ NFS_MOUNT_NOAC, ",noac", "" },
{ NFS_MOUNT_NONLM, ",nolock", "" },
};
const struct proc_nfs_info *nfs_infop;
struct nfs_client *clp = nfss->nfs_client;
- char buf[12];
- const char *proto;
seq_printf(m, ",vers=%d", clp->rpc_ops->version);
seq_printf(m, ",rsize=%d", nfss->rsize);
else
seq_puts(m, nfs_infop->nostr);
}
- switch (nfss->client->cl_xprt->prot) {
- case IPPROTO_TCP:
- proto = "tcp";
- break;
- case IPPROTO_UDP:
- proto = "udp";
- break;
- default:
- snprintf(buf, sizeof(buf), "%u", nfss->client->cl_xprt->prot);
- proto = buf;
- }
- seq_printf(m, ",proto=%s", proto);
- seq_printf(m, ",timeo=%lu", 10U * clp->retrans_timeo / HZ);
- seq_printf(m, ",retrans=%u", clp->retrans_count);
+ seq_printf(m, ",proto=%s",
+ rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
+ seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
+ seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));
}
nfs_show_mount_options(m, nfss, 0);
- seq_puts(m, ",addr=");
- seq_escape(m, nfss->nfs_client->cl_hostname, " \t\n\\");
+ seq_printf(m, ",addr=%s",
+ rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient,
+ RPC_DISPLAY_ADDR));
return 0;
}
seq_printf(m, ",namelen=%d", nfss->namelen);
#ifdef CONFIG_NFS_V4
- if (nfss->nfs_client->cl_nfsversion == 4) {
+ if (nfss->nfs_client->rpc_ops->version == 4) {
seq_printf(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
}
/*
- * Sanity-check a server address provided by the mount command
+ * Set the port number in an address. Be agnostic about the address family.
+ */
+static void nfs_set_port(struct sockaddr *sap, unsigned short port)
+{
+ switch (sap->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+ ap->sin_port = htons(port);
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+ ap->sin6_port = htons(port);
+ break;
+ }
+ }
+}
+
+/*
+ * Sanity-check a server address provided by the mount command.
+ *
+ * Address family must be initialized, and address must not be
+ * the ANY address for that family.
*/
static int nfs_verify_server_address(struct sockaddr *addr)
{
switch (addr->sa_family) {
case AF_INET: {
- struct sockaddr_in *sa = (struct sockaddr_in *) addr;
- if (sa->sin_addr.s_addr != INADDR_ANY)
- return 1;
- break;
+ struct sockaddr_in *sa = (struct sockaddr_in *)addr;
+ return sa->sin_addr.s_addr != INADDR_ANY;
+ }
+ case AF_INET6: {
+ struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
+ return !ipv6_addr_any(sa);
}
}
return 0;
}
+/*
+ * Parse string addresses passed in via a mount option,
+ * and construct a sockaddr based on the result.
+ *
+ * If address parsing fails, set the sockaddr's address
+ * family to AF_UNSPEC to force nfs_verify_server_address()
+ * to punt the mount.
+ */
+static void nfs_parse_server_address(char *value,
+ struct sockaddr *sap,
+ size_t *len)
+{
+ if (strchr(value, ':')) {
+ struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+ u8 *addr = (u8 *)&ap->sin6_addr.in6_u;
+
+ ap->sin6_family = AF_INET6;
+ *len = sizeof(*ap);
+ if (in6_pton(value, -1, addr, '\0', NULL))
+ return;
+ } else {
+ struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+ u8 *addr = (u8 *)&ap->sin_addr.s_addr;
+
+ ap->sin_family = AF_INET;
+ *len = sizeof(*ap);
+ if (in4_pton(value, -1, addr, '\0', NULL))
+ return;
+ }
+
+ sap->sa_family = AF_UNSPEC;
+ *len = 0;
+}
+
/*
* Error-check and convert a string of mount options from user space into
* a data structure
struct nfs_parsed_mount_data *mnt)
{
char *p, *string;
+ unsigned short port = 0;
if (!raw) {
dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
mnt->flags &= ~NFS_MOUNT_SOFT;
break;
case Opt_intr:
- mnt->flags |= NFS_MOUNT_INTR;
- break;
case Opt_nointr:
- mnt->flags &= ~NFS_MOUNT_INTR;
break;
case Opt_posix:
mnt->flags |= NFS_MOUNT_POSIX;
break;
case Opt_udp:
mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = IPPROTO_UDP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
mnt->timeo = 7;
mnt->retrans = 5;
break;
case Opt_tcp:
mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = IPPROTO_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ mnt->timeo = 600;
+ mnt->retrans = 2;
+ break;
+ case Opt_rdma:
+ mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
mnt->timeo = 600;
mnt->retrans = 2;
break;
return 0;
if (option < 0 || option > 65535)
return 0;
- mnt->nfs_server.address.sin_port = htons(option);
+ port = option;
break;
case Opt_rsize:
if (match_int(args, &mnt->rsize))
return 0;
mnt->mount_server.port = option;
break;
- case Opt_mountprog:
- if (match_int(args, &option))
- return 0;
- if (option < 0)
- return 0;
- mnt->mount_server.program = option;
- break;
case Opt_mountvers:
if (match_int(args, &option))
return 0;
return 0;
mnt->mount_server.version = option;
break;
- case Opt_nfsprog:
- if (match_int(args, &option))
- return 0;
- if (option < 0)
- return 0;
- mnt->nfs_server.program = option;
- break;
case Opt_nfsvers:
if (match_int(args, &option))
return 0;
switch (token) {
case Opt_xprt_udp:
mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = IPPROTO_UDP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
mnt->timeo = 7;
mnt->retrans = 5;
break;
case Opt_xprt_tcp:
mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = IPPROTO_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ mnt->timeo = 600;
+ mnt->retrans = 2;
+ break;
+ case Opt_xprt_rdma:
+ /* vector side protocols to TCP */
+ mnt->flags |= NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
mnt->timeo = 600;
mnt->retrans = 2;
break;
switch (token) {
case Opt_xprt_udp:
- mnt->mount_server.protocol = IPPROTO_UDP;
+ mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp:
- mnt->mount_server.protocol = IPPROTO_TCP;
+ mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
break;
+ case Opt_xprt_rdma: /* not used for side protocols */
default:
goto out_unrec_xprt;
}
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- mnt->nfs_server.address.sin_family = AF_INET;
- mnt->nfs_server.address.sin_addr.s_addr =
- in_aton(string);
+ nfs_parse_server_address(string, (struct sockaddr *)
+ &mnt->nfs_server.address,
+ &mnt->nfs_server.addrlen);
kfree(string);
break;
case Opt_clientaddr:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
+ kfree(mnt->client_address);
mnt->client_address = string;
break;
case Opt_mounthost:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- mnt->mount_server.address.sin_family = AF_INET;
- mnt->mount_server.address.sin_addr.s_addr =
- in_aton(string);
+ kfree(mnt->mount_server.hostname);
+ mnt->mount_server.hostname = string;
+ break;
+ case Opt_mountaddr:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ nfs_parse_server_address(string, (struct sockaddr *)
+ &mnt->mount_server.address,
+ &mnt->mount_server.addrlen);
kfree(string);
break;
}
}
+ nfs_set_port((struct sockaddr *)&mnt->nfs_server.address, port);
+
return 1;
out_nomem:
static int nfs_try_mount(struct nfs_parsed_mount_data *args,
struct nfs_fh *root_fh)
{
- struct sockaddr_in sin;
+ struct sockaddr *sap = (struct sockaddr *)&args->mount_server.address;
+ char *hostname;
int status;
if (args->mount_server.version == 0) {
args->mount_server.version = NFS_MNT_VERSION;
}
+ if (args->mount_server.hostname)
+ hostname = args->mount_server.hostname;
+ else
+ hostname = args->nfs_server.hostname;
+
/*
* Construct the mount server's address.
*/
- if (args->mount_server.address.sin_addr.s_addr != INADDR_ANY)
- sin = args->mount_server.address;
- else
- sin = args->nfs_server.address;
- if (args->mount_server.port == 0) {
- status = rpcb_getport_sync(&sin,
- args->mount_server.program,
- args->mount_server.version,
- args->mount_server.protocol);
- if (status < 0)
- goto out_err;
- sin.sin_port = htons(status);
- } else
- sin.sin_port = htons(args->mount_server.port);
+ if (args->mount_server.address.ss_family == AF_UNSPEC) {
+ memcpy(sap, &args->nfs_server.address,
+ args->nfs_server.addrlen);
+ args->mount_server.addrlen = args->nfs_server.addrlen;
+ }
+
+ /*
+ * autobind will be used if mount_server.port == 0
+ */
+ nfs_set_port(sap, args->mount_server.port);
/*
* Now ask the mount server to map our export path
* to a file handle.
*/
- status = nfs_mount((struct sockaddr *) &sin,
- sizeof(sin),
- args->nfs_server.hostname,
+ status = nfs_mount(sap,
+ args->mount_server.addrlen,
+ hostname,
args->nfs_server.export_path,
args->mount_server.version,
args->mount_server.protocol,
root_fh);
- if (status < 0)
- goto out_err;
-
- return status;
+ if (status == 0)
+ return 0;
-out_err:
- dfprintk(MOUNT, "NFS: unable to contact server on host "
- NIPQUAD_FMT "\n", NIPQUAD(sin.sin_addr.s_addr));
+ dfprintk(MOUNT, "NFS: unable to mount server %s, error %d",
+ hostname, status);
return status;
}
*
* + breaking back: trying proto=udp after proto=tcp, v2 after v3,
* mountproto=tcp after mountproto=udp, and so on
- *
- * XXX: as far as I can tell, changing the NFS program number is not
- * supported in the NFS client.
*/
-static int nfs_validate_mount_data(struct nfs_mount_data **options,
+static int nfs_validate_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
struct nfs_fh *mntfh,
const char *dev_name)
{
- struct nfs_mount_data *data = *options;
+ struct nfs_mount_data *data = (struct nfs_mount_data *)options;
+
+ memset(args, 0, sizeof(*args));
if (data == NULL)
goto out_no_data;
+ args->flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP);
+ args->rsize = NFS_MAX_FILE_IO_SIZE;
+ args->wsize = NFS_MAX_FILE_IO_SIZE;
+ args->timeo = 600;
+ args->retrans = 2;
+ args->acregmin = 3;
+ args->acregmax = 60;
+ args->acdirmin = 30;
+ args->acdirmax = 60;
+ args->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ args->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+
switch (data->version) {
case 1:
data->namlen = 0;
if (mntfh->size < sizeof(mntfh->data))
memset(mntfh->data + mntfh->size, 0,
sizeof(mntfh->data) - mntfh->size);
+
+ /*
+ * Translate to nfs_parsed_mount_data, which nfs_fill_super
+ * can deal with.
+ */
+ args->flags = data->flags;
+ args->rsize = data->rsize;
+ args->wsize = data->wsize;
+ args->flags = data->flags;
+ args->timeo = data->timeo;
+ args->retrans = data->retrans;
+ args->acregmin = data->acregmin;
+ args->acregmax = data->acregmax;
+ args->acdirmin = data->acdirmin;
+ args->acdirmax = data->acdirmax;
+
+ memcpy(&args->nfs_server.address, &data->addr,
+ sizeof(data->addr));
+ args->nfs_server.addrlen = sizeof(data->addr);
+ if (!nfs_verify_server_address((struct sockaddr *)
+ &args->nfs_server.address))
+ goto out_no_address;
+
+ if (!(data->flags & NFS_MOUNT_TCP))
+ args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ /* N.B. caller will free nfs_server.hostname in all cases */
+ args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
+ args->namlen = data->namlen;
+ args->bsize = data->bsize;
+ args->auth_flavors[0] = data->pseudoflavor;
break;
default: {
unsigned int len;
char *c;
int status;
- struct nfs_parsed_mount_data args = {
- .flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP),
- .rsize = NFS_MAX_FILE_IO_SIZE,
- .wsize = NFS_MAX_FILE_IO_SIZE,
- .timeo = 600,
- .retrans = 2,
- .acregmin = 3,
- .acregmax = 60,
- .acdirmin = 30,
- .acdirmax = 60,
- .mount_server.protocol = IPPROTO_UDP,
- .mount_server.program = NFS_MNT_PROGRAM,
- .nfs_server.protocol = IPPROTO_TCP,
- .nfs_server.program = NFS_PROGRAM,
- };
-
- if (nfs_parse_mount_options((char *) *options, &args) == 0)
- return -EINVAL;
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
+ if (nfs_parse_mount_options((char *)options, args) == 0)
+ return -EINVAL;
- /*
- * NB: after this point, caller will free "data"
- * if we return an error
- */
- *options = data;
+ if (!nfs_verify_server_address((struct sockaddr *)
+ &args->nfs_server.address))
+ goto out_no_address;
c = strchr(dev_name, ':');
if (c == NULL)
return -EINVAL;
len = c - dev_name;
- if (len > sizeof(data->hostname))
- return -ENAMETOOLONG;
- strncpy(data->hostname, dev_name, len);
- args.nfs_server.hostname = data->hostname;
+ /* N.B. caller will free nfs_server.hostname in all cases */
+ args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL);
c++;
if (strlen(c) > NFS_MAXPATHLEN)
return -ENAMETOOLONG;
- args.nfs_server.export_path = c;
+ args->nfs_server.export_path = c;
- status = nfs_try_mount(&args, mntfh);
+ status = nfs_try_mount(args, mntfh);
if (status)
return status;
- /*
- * Translate to nfs_mount_data, which nfs_fill_super
- * can deal with.
- */
- data->version = 6;
- data->flags = args.flags;
- data->rsize = args.rsize;
- data->wsize = args.wsize;
- data->timeo = args.timeo;
- data->retrans = args.retrans;
- data->acregmin = args.acregmin;
- data->acregmax = args.acregmax;
- data->acdirmin = args.acdirmin;
- data->acdirmax = args.acdirmax;
- data->addr = args.nfs_server.address;
- data->namlen = args.namlen;
- data->bsize = args.bsize;
- data->pseudoflavor = args.auth_flavors[0];
-
break;
}
}
- if (!(data->flags & NFS_MOUNT_SECFLAVOUR))
- data->pseudoflavor = RPC_AUTH_UNIX;
+ if (!(args->flags & NFS_MOUNT_SECFLAVOUR))
+ args->auth_flavors[0] = RPC_AUTH_UNIX;
#ifndef CONFIG_NFS_V3
- if (data->flags & NFS_MOUNT_VER3)
+ if (args->flags & NFS_MOUNT_VER3)
goto out_v3_not_compiled;
#endif /* !CONFIG_NFS_V3 */
- if (!nfs_verify_server_address((struct sockaddr *) &data->addr))
- goto out_no_address;
-
return 0;
out_no_data:
/*
* Finish setting up an NFS2/3 superblock
*/
-static void nfs_fill_super(struct super_block *sb, struct nfs_mount_data *data)
+static void nfs_fill_super(struct super_block *sb,
+ struct nfs_parsed_mount_data *data)
{
struct nfs_server *server = NFS_SB(sb);
return ret;
}
+static int nfs_compare_super_address(struct nfs_server *server1,
+ struct nfs_server *server2)
+{
+ struct sockaddr *sap1, *sap2;
+
+ sap1 = (struct sockaddr *)&server1->nfs_client->cl_addr;
+ sap2 = (struct sockaddr *)&server2->nfs_client->cl_addr;
+
+ if (sap1->sa_family != sap2->sa_family)
+ return 0;
+
+ switch (sap1->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *sin1 = (struct sockaddr_in *)sap1;
+ struct sockaddr_in *sin2 = (struct sockaddr_in *)sap2;
+ if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr)
+ return 0;
+ if (sin1->sin_port != sin2->sin_port)
+ return 0;
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *sin1 = (struct sockaddr_in6 *)sap1;
+ struct sockaddr_in6 *sin2 = (struct sockaddr_in6 *)sap2;
+ if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
+ return 0;
+ if (sin1->sin6_port != sin2->sin6_port)
+ return 0;
+ break;
+ }
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
static int nfs_compare_super(struct super_block *sb, void *data)
{
struct nfs_sb_mountdata *sb_mntdata = data;
struct nfs_server *server = sb_mntdata->server, *old = NFS_SB(sb);
int mntflags = sb_mntdata->mntflags;
- if (memcmp(&old->nfs_client->cl_addr,
- &server->nfs_client->cl_addr,
- sizeof(old->nfs_client->cl_addr)) != 0)
+ if (!nfs_compare_super_address(old, server))
return 0;
/* Note: NFS_MOUNT_UNSHARED == NFS4_MOUNT_UNSHARED */
if (old->flags & NFS_MOUNT_UNSHARED)
struct nfs_server *server = NULL;
struct super_block *s;
struct nfs_fh mntfh;
- struct nfs_mount_data *data = raw_data;
+ struct nfs_parsed_mount_data data;
struct dentry *mntroot;
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_sb_mountdata sb_mntdata = {
int error;
/* Validate the mount data */
- error = nfs_validate_mount_data(&data, &mntfh, dev_name);
+ error = nfs_validate_mount_data(raw_data, &data, &mntfh, dev_name);
if (error < 0)
goto out;
/* Get a volume representation */
- server = nfs_create_server(data, &mntfh);
+ server = nfs_create_server(&data, &mntfh);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out;
if (!s->s_root) {
/* initial superblock/root creation */
- nfs_fill_super(s, data);
+ nfs_fill_super(s, &data);
}
mntroot = nfs_get_root(s, &mntfh);
error = 0;
out:
- if (data != raw_data)
- kfree(data);
+ kfree(data.nfs_server.hostname);
+ kfree(data.mount_server.hostname);
return error;
out_err_nosb:
error = PTR_ERR(mntroot);
goto error_splat_super;
}
+ if (mntroot->d_inode->i_op != NFS_SB(s)->nfs_client->rpc_ops->dir_inode_ops) {
+ dput(mntroot);
+ error = -ESTALE;
+ goto error_splat_super;
+ }
s->s_flags |= MS_ACTIVE;
mnt->mnt_sb = s;
nfs_initialise_sb(sb);
}
+/*
+ * If the user didn't specify a port, set the port number to
+ * the NFS version 4 default port.
+ */
+static void nfs4_default_port(struct sockaddr *sap)
+{
+ switch (sap->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+ if (ap->sin_port == 0)
+ ap->sin_port = htons(NFS_PORT);
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+ if (ap->sin6_port == 0)
+ ap->sin6_port = htons(NFS_PORT);
+ break;
+ }
+ }
+}
+
/*
* Validate NFSv4 mount options
*/
-static int nfs4_validate_mount_data(struct nfs4_mount_data **options,
- const char *dev_name,
- struct sockaddr_in *addr,
- rpc_authflavor_t *authflavour,
- char **hostname,
- char **mntpath,
- char **ip_addr)
+static int nfs4_validate_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
+ const char *dev_name)
{
- struct nfs4_mount_data *data = *options;
+ struct sockaddr_in *ap;
+ struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
char *c;
+ memset(args, 0, sizeof(*args));
+
if (data == NULL)
goto out_no_data;
+ args->rsize = NFS_MAX_FILE_IO_SIZE;
+ args->wsize = NFS_MAX_FILE_IO_SIZE;
+ args->timeo = 600;
+ args->retrans = 2;
+ args->acregmin = 3;
+ args->acregmax = 60;
+ args->acdirmin = 30;
+ args->acdirmax = 60;
+ args->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+
switch (data->version) {
case 1:
- if (data->host_addrlen != sizeof(*addr))
+ ap = (struct sockaddr_in *)&args->nfs_server.address;
+ if (data->host_addrlen > sizeof(args->nfs_server.address))
+ goto out_no_address;
+ if (data->host_addrlen == 0)
goto out_no_address;
- if (copy_from_user(addr, data->host_addr, sizeof(*addr)))
+ args->nfs_server.addrlen = data->host_addrlen;
+ if (copy_from_user(ap, data->host_addr, data->host_addrlen))
return -EFAULT;
- if (addr->sin_port == 0)
- addr->sin_port = htons(NFS_PORT);
- if (!nfs_verify_server_address((struct sockaddr *) addr))
+ if (!nfs_verify_server_address((struct sockaddr *)
+ &args->nfs_server.address))
goto out_no_address;
+ nfs4_default_port((struct sockaddr *)
+ &args->nfs_server.address);
+
switch (data->auth_flavourlen) {
case 0:
- *authflavour = RPC_AUTH_UNIX;
+ args->auth_flavors[0] = RPC_AUTH_UNIX;
break;
case 1:
- if (copy_from_user(authflavour, data->auth_flavours,
- sizeof(*authflavour)))
+ if (copy_from_user(&args->auth_flavors[0],
+ data->auth_flavours,
+ sizeof(args->auth_flavors[0])))
return -EFAULT;
break;
default:
c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
if (IS_ERR(c))
return PTR_ERR(c);
- *hostname = c;
+ args->nfs_server.hostname = c;
c = strndup_user(data->mnt_path.data, NFS4_MAXPATHLEN);
if (IS_ERR(c))
return PTR_ERR(c);
- *mntpath = c;
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", *mntpath);
+ args->nfs_server.export_path = c;
+ dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", c);
c = strndup_user(data->client_addr.data, 16);
if (IS_ERR(c))
return PTR_ERR(c);
- *ip_addr = c;
+ args->client_address = c;
+
+ /*
+ * Translate to nfs_parsed_mount_data, which nfs4_fill_super
+ * can deal with.
+ */
+
+ args->flags = data->flags & NFS4_MOUNT_FLAGMASK;
+ args->rsize = data->rsize;
+ args->wsize = data->wsize;
+ args->timeo = data->timeo;
+ args->retrans = data->retrans;
+ args->acregmin = data->acregmin;
+ args->acregmax = data->acregmax;
+ args->acdirmin = data->acdirmin;
+ args->acdirmax = data->acdirmax;
+ args->nfs_server.protocol = data->proto;
break;
default: {
unsigned int len;
- struct nfs_parsed_mount_data args = {
- .rsize = NFS_MAX_FILE_IO_SIZE,
- .wsize = NFS_MAX_FILE_IO_SIZE,
- .timeo = 600,
- .retrans = 2,
- .acregmin = 3,
- .acregmax = 60,
- .acdirmin = 30,
- .acdirmax = 60,
- .nfs_server.protocol = IPPROTO_TCP,
- };
-
- if (nfs_parse_mount_options((char *) *options, &args) == 0)
+
+ if (nfs_parse_mount_options((char *)options, args) == 0)
return -EINVAL;
if (!nfs_verify_server_address((struct sockaddr *)
- &args.nfs_server.address))
+ &args->nfs_server.address))
return -EINVAL;
- *addr = args.nfs_server.address;
- switch (args.auth_flavor_len) {
+ nfs4_default_port((struct sockaddr *)
+ &args->nfs_server.address);
+
+ switch (args->auth_flavor_len) {
case 0:
- *authflavour = RPC_AUTH_UNIX;
+ args->auth_flavors[0] = RPC_AUTH_UNIX;
break;
case 1:
- *authflavour = (rpc_authflavor_t) args.auth_flavors[0];
break;
default:
goto out_inval_auth;
}
- /*
- * Translate to nfs4_mount_data, which nfs4_fill_super
- * can deal with.
- */
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
- *options = data;
-
- data->version = 1;
- data->flags = args.flags & NFS4_MOUNT_FLAGMASK;
- data->rsize = args.rsize;
- data->wsize = args.wsize;
- data->timeo = args.timeo;
- data->retrans = args.retrans;
- data->acregmin = args.acregmin;
- data->acregmax = args.acregmax;
- data->acdirmin = args.acdirmin;
- data->acdirmax = args.acdirmax;
- data->proto = args.nfs_server.protocol;
-
/*
* Split "dev_name" into "hostname:mntpath".
*/
len = c - dev_name;
if (len > NFS4_MAXNAMLEN)
return -ENAMETOOLONG;
- *hostname = kzalloc(len, GFP_KERNEL);
- if (*hostname == NULL)
- return -ENOMEM;
- strncpy(*hostname, dev_name, len - 1);
+ /* N.B. caller will free nfs_server.hostname in all cases */
+ args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL);
c++; /* step over the ':' */
len = strlen(c);
if (len > NFS4_MAXPATHLEN)
return -ENAMETOOLONG;
- *mntpath = kzalloc(len + 1, GFP_KERNEL);
- if (*mntpath == NULL)
- return -ENOMEM;
- strncpy(*mntpath, c, len);
+ args->nfs_server.export_path = kstrndup(c, len, GFP_KERNEL);
- dprintk("MNTPATH: %s\n", *mntpath);
+ dprintk("NFS: MNTPATH: '%s'\n", args->nfs_server.export_path);
- if (args.client_address == NULL)
+ if (args->client_address == NULL)
goto out_no_client_address;
- *ip_addr = args.client_address;
-
break;
}
}
static int nfs4_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
{
- struct nfs4_mount_data *data = raw_data;
+ struct nfs_parsed_mount_data data;
struct super_block *s;
struct nfs_server *server;
- struct sockaddr_in addr;
- rpc_authflavor_t authflavour;
struct nfs_fh mntfh;
struct dentry *mntroot;
- char *mntpath = NULL, *hostname = NULL, *ip_addr = NULL;
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
int error;
/* Validate the mount data */
- error = nfs4_validate_mount_data(&data, dev_name, &addr, &authflavour,
- &hostname, &mntpath, &ip_addr);
+ error = nfs4_validate_mount_data(raw_data, &data, dev_name);
if (error < 0)
goto out;
/* Get a volume representation */
- server = nfs4_create_server(data, hostname, &addr, mntpath, ip_addr,
- authflavour, &mntfh);
+ server = nfs4_create_server(&data, &mntfh);
if (IS_ERR(server)) {
error = PTR_ERR(server);
goto out;
error = 0;
out:
- kfree(ip_addr);
- kfree(mntpath);
- kfree(hostname);
+ kfree(data.client_address);
+ kfree(data.nfs_server.export_path);
+ kfree(data.nfs_server.hostname);
return error;
out_free:
error = PTR_ERR(mntroot);
goto error_splat_super;
}
+ if (mntroot->d_inode->i_op != NFS_SB(s)->nfs_client->rpc_ops->dir_inode_ops) {
+ dput(mntroot);
+ error = -ESTALE;
+ goto error_splat_super;
+ }
s->s_flags |= MS_ACTIVE;
mnt->mnt_sb = s;
error = PTR_ERR(mntroot);
goto error_splat_super;
}
+ if (mntroot->d_inode->i_op != NFS_SB(s)->nfs_client->rpc_ops->dir_inode_ops) {
+ dput(mntroot);
+ error = -ESTALE;
+ goto error_splat_super;
+ }
s->s_flags |= MS_ACTIVE;
mnt->mnt_sb = s;
projects / linux-2.6 / blobdiff