diff options
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/internal.h | 9 | ||||
| -rw-r--r-- | fs/nfs/super.c | 55 |
2 files changed, 36 insertions, 28 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 2e485677019c..5e686a4d744e 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -49,6 +49,11 @@ struct nfs_clone_mount { #define NFS_MAX_SECFLAVORS (12) /* + * Value used if the user did not specify a port value. + */ +#define NFS_UNSPEC_PORT (-1) + +/* * In-kernel mount arguments */ struct nfs_parsed_mount_data { @@ -71,7 +76,7 @@ struct nfs_parsed_mount_data { size_t addrlen; char *hostname; u32 version; - unsigned short port; + int port; unsigned short protocol; } mount_server; @@ -80,7 +85,7 @@ struct nfs_parsed_mount_data { size_t addrlen; char *hostname; char *export_path; - unsigned short port; + int port; unsigned short protocol; } nfs_server; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index f3a95df4b95f..05544336f7de 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -747,6 +747,21 @@ static int nfs_verify_server_address(struct sockaddr *addr) } /* + * Select between a default port value and a user-specified port value. + * If a zero value is set, then autobind will be used. + */ +static void nfs_set_default_port(struct sockaddr *sap, const int parsed_port, + const unsigned short default_port) +{ + unsigned short port = default_port; + + if (parsed_port != NFS_UNSPEC_PORT) + port = parsed_port; + + rpc_set_port(sap, port); +} + +/* * Sanity check the NFS transport protocol. * */ @@ -1415,11 +1430,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args, args->mount_server.addrlen = args->nfs_server.addrlen; } request.salen = args->mount_server.addrlen; - - /* - * autobind will be used if mount_server.port == 0 - */ - rpc_set_port(request.sap, args->mount_server.port); + nfs_set_default_port(request.sap, args->mount_server.port, 0); /* * Now ask the mount server to map our export path @@ -1597,6 +1608,7 @@ static int nfs_validate_mount_data(void *options, const char *dev_name) { struct nfs_mount_data *data = (struct nfs_mount_data *)options; + struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address; if (data == NULL) goto out_no_data; @@ -1608,8 +1620,8 @@ static int nfs_validate_mount_data(void *options, args->acregmax = NFS_DEF_ACREGMAX; args->acdirmin = NFS_DEF_ACDIRMIN; args->acdirmax = NFS_DEF_ACDIRMAX; - args->mount_server.port = 0; /* autobind unless user sets port */ - args->nfs_server.port = 0; /* autobind unless user sets port */ + args->mount_server.port = NFS_UNSPEC_PORT; + args->nfs_server.port = NFS_UNSPEC_PORT; args->nfs_server.protocol = XPRT_TRANSPORT_TCP; args->auth_flavors[0] = RPC_AUTH_UNIX; args->auth_flavor_len = 1; @@ -1657,11 +1669,9 @@ static int nfs_validate_mount_data(void *options, args->acdirmin = data->acdirmin; args->acdirmax = data->acdirmax; - memcpy(&args->nfs_server.address, &data->addr, - sizeof(data->addr)); + memcpy(sap, &data->addr, sizeof(data->addr)); args->nfs_server.addrlen = sizeof(data->addr); - if (!nfs_verify_server_address((struct sockaddr *) - &args->nfs_server.address)) + if (!nfs_verify_server_address(sap)) goto out_no_address; if (!(data->flags & NFS_MOUNT_TCP)) @@ -1709,12 +1719,10 @@ static int nfs_validate_mount_data(void *options, if (nfs_parse_mount_options((char *)options, args) == 0) return -EINVAL; - if (!nfs_verify_server_address((struct sockaddr *) - &args->nfs_server.address)) + if (!nfs_verify_server_address(sap)) goto out_no_address; - rpc_set_port((struct sockaddr *)&args->nfs_server.address, - args->nfs_server.port); + nfs_set_default_port(sap, args->nfs_server.port, 0); nfs_set_mount_transport_protocol(args); @@ -2261,7 +2269,7 @@ static int nfs4_validate_mount_data(void *options, struct nfs_parsed_mount_data *args, const char *dev_name) { - struct sockaddr_in *ap; + struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address; struct nfs4_mount_data *data = (struct nfs4_mount_data *)options; char *c; @@ -2274,23 +2282,21 @@ static int nfs4_validate_mount_data(void *options, args->acregmax = NFS_DEF_ACREGMAX; args->acdirmin = NFS_DEF_ACDIRMIN; args->acdirmax = NFS_DEF_ACDIRMAX; - args->nfs_server.port = NFS_PORT; /* 2049 unless user set port= */ + args->nfs_server.port = NFS_UNSPEC_PORT; args->auth_flavors[0] = RPC_AUTH_UNIX; args->auth_flavor_len = 1; args->minorversion = 0; switch (data->version) { case 1: - 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; args->nfs_server.addrlen = data->host_addrlen; - if (copy_from_user(ap, data->host_addr, data->host_addrlen)) + if (copy_from_user(sap, data->host_addr, data->host_addrlen)) return -EFAULT; - if (!nfs_verify_server_address((struct sockaddr *) - &args->nfs_server.address)) + if (!nfs_verify_server_address(sap)) goto out_no_address; if (data->auth_flavourlen) { @@ -2342,12 +2348,9 @@ static int nfs4_validate_mount_data(void *options, if (nfs_parse_mount_options((char *)options, args) == 0) return -EINVAL; - if (!nfs_verify_server_address((struct sockaddr *) - &args->nfs_server.address)) + if (!nfs_verify_server_address(sap)) return -EINVAL; - - rpc_set_port((struct sockaddr *)&args->nfs_server.address, - args->nfs_server.port); + nfs_set_default_port(sap, args->nfs_server.port, NFS_PORT); nfs_validate_transport_protocol(args); |