#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
+#include <sys/stat.h>
#include <netinet/in.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
+#include "sockaddr.h"
#include "xcommon.h"
#include "mount.h"
#include "nls.h"
#include "nfs_mount.h"
#include "mount_constants.h"
#include "nfsrpc.h"
+#include "parse_opt.h"
#include "network.h"
+#include "conffile.h"
+#include "nfslib.h"
#define PMAP_TIMEOUT (10)
#define CONNECT_TIMEOUT (20)
#define MOUNT_TIMEOUT (30)
-#if SIZEOF_SOCKLEN_T - 0 == 0
-#define socklen_t unsigned int
-#endif
-
extern int nfs_mount_data_version;
extern char *progname;
extern int verbose;
NULL,
};
+static const char *nfs_mnt_pgmtbl[] = {
+ "mount",
+ "mountd",
+ NULL,
+};
+
+static const char *nfs_nfs_pgmtbl[] = {
+ "nfs",
+ "nfsprog",
+ NULL,
+};
+
+static const char *nfs_transport_opttbl[] = {
+ "udp",
+ "tcp",
+ "rdma",
+ "proto",
+ NULL,
+};
+
+static const char *nfs_version_opttbl[] = {
+ "v2",
+ "v3",
+ "v4",
+ "vers",
+ "nfsvers",
+ NULL,
+};
+
static const unsigned long nfs_to_mnt[] = {
0,
0,
0,
};
-static void nfs_set_port(struct sockaddr *sap, const unsigned short port)
+static const unsigned int *nfs_default_proto(void);
+#ifdef MOUNT_CONFIG
+static const unsigned int *nfs_default_proto()
{
- switch (sap->sa_family) {
- case AF_INET:
- ((struct sockaddr_in *)sap)->sin_port = htons(port);
- break;
- case AF_INET6:
- ((struct sockaddr_in6 *)sap)->sin6_port = htons(port);
- break;
- default:
- nfs_error(_("%s: unrecognized address family in %s"),
- progname, __func__);
- }
+ extern unsigned long config_default_proto;
+ /*
+ * If the default proto has been set and
+ * its not TCP, start with UDP
+ */
+ if (config_default_proto && config_default_proto != IPPROTO_TCP)
+ return probe_udp_first;
+
+ return probe_tcp_first;
}
+#else
+static const unsigned int *nfs_default_proto()
+{
+ return probe_tcp_first;
+}
+#endif /* MOUNT_CONFIG */
-#ifdef HAVE_DECL_AI_ADDRCONFIG
/**
- * nfs_name_to_address - resolve hostname to an IPv4 or IPv6 socket address
+ * nfs_lookup - resolve hostname to an IPv4 or IPv6 socket address
* @hostname: pointer to C string containing DNS hostname to resolve
- * @af_hint: hint to restrict resolution to one address family
+ * @family: address family hint
* @sap: pointer to buffer to fill with socket address
* @len: IN: size of buffer to fill; OUT: size of socket address
*
* Returns 1 and places a socket address at @sap if successful;
* otherwise zero.
*/
-int nfs_name_to_address(const char *hostname,
- const sa_family_t af_hint,
- struct sockaddr *sap, socklen_t *salen)
+int nfs_lookup(const char *hostname, const sa_family_t family,
+ struct sockaddr *sap, socklen_t *salen)
{
struct addrinfo *gai_results;
struct addrinfo gai_hint = {
- .ai_family = af_hint,
+#ifdef HAVE_DECL_AI_ADDRCONFIG
.ai_flags = AI_ADDRCONFIG,
+#endif /* HAVE_DECL_AI_ADDRCONFIG */
+ .ai_family = family,
};
socklen_t len = *salen;
int error, ret = 0;
- if (af_hint == AF_INET6)
- gai_hint.ai_flags |= AI_V4MAPPED|AI_ALL;
-
*salen = 0;
error = getaddrinfo(hostname, NULL, &gai_hint, &gai_results);
- if (error) {
+ switch (error) {
+ case 0:
+ break;
+ case EAI_SYSTEM:
+ nfs_error(_("%s: DNS resolution failed for %s: %s"),
+ progname, hostname, strerror(errno));
+ return ret;
+ default:
nfs_error(_("%s: DNS resolution failed for %s: %s"),
- progname, hostname, (error == EAI_SYSTEM ?
- strerror(errno) : gai_strerror(error)));
+ progname, hostname, gai_strerror(error));
return ret;
}
freeaddrinfo(gai_results);
return ret;
}
-#else /* HAVE_DECL_AI_ADDRCONFIG */
-/**
- * nfs_name_to_address - resolve hostname to an IPv4 socket address
- * @hostname: pointer to C string containing DNS hostname to resolve
- * @af_hint: hint to restrict resolution to one address family
- * @sap: pointer to buffer to fill with socket address
- * @len: IN: size of buffer to fill; OUT: size of socket address
- *
- * Returns 1 and places a socket address at @sap if successful;
- * otherwise zero.
- *
- * Some older getaddrinfo(3) implementations don't support
- * AI_ADDRCONFIG or AI_V4MAPPED properly. For those cases, a DNS
- * resolver based on the traditional gethostbyname(3) is provided.
- */
-int nfs_name_to_address(const char *hostname,
- const sa_family_t af_hint,
- struct sockaddr *sap, socklen_t *salen)
-{
- struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- socklen_t len = *salen;
- struct hostent *hp;
-
- *salen = 0;
-
- if (af_hint != AF_INET) {
- nfs_error(_("%s: address family not supported by DNS resolver\n"),
- progname, hostname);
- return 0;
- }
-
- sin->sin_family = AF_INET;
- if (inet_aton(hostname, &sin->sin_addr)) {
- *salen = sizeof(*sin);
- return 1;
- }
-
- hp = gethostbyname(hostname);
- if (hp == NULL) {
- nfs_error(_("%s: DNS resolution failed for %s: %s"),
- progname, hostname, hstrerror(h_errno));
- return 0;
- }
-
- if (hp->h_length > len) {
- nfs_error(_("%s: DNS resolution results too long for buffer\n"),
- progname);
- return 0;
- }
-
- memcpy(&sin->sin_addr, hp->h_addr, hp->h_length);
- *salen = hp->h_length;
- return 1;
-}
-#endif /* HAVE_DECL_AI_ADDRCONFIG */
/**
* nfs_gethostbyname - resolve a hostname to an IPv4 address
{
socklen_t len = sizeof(*sin);
- return nfs_name_to_address(hostname, AF_INET,
- (struct sockaddr *)sin, &len);
+ return nfs_lookup(hostname, AF_INET, (struct sockaddr *)sin, &len);
}
/**
* nfs_string_to_sockaddr - convert string address to sockaddr
* @address: pointer to presentation format address to convert
- * @addrlen: length of presentation address
* @sap: pointer to socket address buffer to fill in
* @salen: IN: length of address buffer
* OUT: length of converted socket address
*
* Convert a presentation format address string to a socket address.
- * Similar to nfs_name_to_address(), but the DNS query is squelched,
- * and won't make any noise if the getaddrinfo() call fails.
+ * Similar to nfs_lookup(), but the DNS query is squelched, and it
+ * won't make any noise if the getaddrinfo() call fails.
*
* Returns 1 and fills in @sap and @salen if successful; otherwise zero.
*
* See RFC 4038 section 5.1 or RFC 3513 section 2.2 for more details
* on presenting IPv6 addresses as text strings.
*/
-int nfs_string_to_sockaddr(const char *address, const size_t addrlen,
- struct sockaddr *sap, socklen_t *salen)
+int nfs_string_to_sockaddr(const char *address, struct sockaddr *sap,
+ socklen_t *salen)
{
struct addrinfo *gai_results;
struct addrinfo gai_hint = {
strcat(buf, "unknown host");
}
- fprintf(stderr, _("%s: trying %s prog %ld vers %ld prot %s port %d\n"),
- progname, buf, program, version,
+ fprintf(stderr, _("%s: trying %s prog %lu vers %lu prot %s port %d\n"),
+ progname, buf, (unsigned long)program,
+ (unsigned long)version,
(protocol == IPPROTO_UDP ? _("UDP") : _("TCP")),
port);
}
+static void nfs_pp_debug2(const char *str)
+{
+ if (!verbose)
+ return;
+
+ if (rpc_createerr.cf_error.re_status == RPC_CANTRECV ||
+ rpc_createerr.cf_error.re_status == RPC_CANTSEND)
+ nfs_error(_("%s: portmap query %s%s - %s"),
+ progname, str, clnt_spcreateerror(""),
+ strerror(rpc_createerr.cf_error.re_errno));
+ else
+ nfs_error(_("%s: portmap query %s%s"),
+ progname, str, clnt_spcreateerror(""));
+}
+
/*
* Use the portmapper to discover whether or not the service we want is
* available. The lists 'versions' and 'protos' define ordered sequences
struct pmap *pmap, const unsigned long *versions,
const unsigned int *protos)
{
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
const unsigned long prog = pmap->pm_prog, *p_vers;
const unsigned int prot = (u_int)pmap->pm_prot, *p_prot;
const u_short port = (u_short) pmap->pm_port;
memcpy(saddr, sap, salen);
p_prot = prot ? &prot : protos;
p_vers = vers ? &vers : versions;
- rpc_createerr.cf_stat = 0;
for (;;) {
+ if (verbose)
+ printf(_("%s: prog %lu, trying vers=%lu, prot=%u\n"),
+ progname, prog, *p_vers, *p_prot);
p_port = nfs_getport(saddr, salen, prog, *p_vers, *p_prot);
if (p_port) {
if (!port || port == p_port) {
if (nfs_rpc_ping(saddr, salen, prog,
*p_vers, *p_prot, NULL))
goto out_ok;
- }
+ } else
+ rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
}
if (rpc_createerr.cf_stat != RPC_PROGNOTREGISTERED &&
rpc_createerr.cf_stat != RPC_TIMEDOUT &&
rpc_createerr.cf_stat != RPC_CANTRECV &&
rpc_createerr.cf_stat != RPC_PROGVERSMISMATCH)
- goto out_bad;
+ break;
if (!prot) {
- if (*++p_prot)
+ if (*++p_prot) {
+ nfs_pp_debug2("retrying");
continue;
+ }
p_prot = protos;
}
if (rpc_createerr.cf_stat == RPC_TIMEDOUT ||
rpc_createerr.cf_stat == RPC_CANTRECV)
- goto out_bad;
+ break;
if (vers || !*++p_vers)
break;
}
-out_bad:
+ nfs_pp_debug2("failed");
return 0;
out_ok:
pmap->pm_prot = *p_prot;
if (!port)
pmap->pm_port = p_port;
- rpc_createerr.cf_stat = 0;
+ nfs_clear_rpc_createerr();
return 1;
}
-
/*
* Probe a server's NFS service to determine which versions and
* transport protocols are supported.
if (pmap->pm_vers && pmap->pm_prot && pmap->pm_port)
return 1;
- if (nfs_mount_data_version >= 4)
+ if (nfs_mount_data_version >= 4) {
+ const unsigned int *probe_proto;
+
+ probe_proto = nfs_default_proto();
+
return nfs_probe_port(sap, salen, pmap,
- probe_nfs3_first, probe_tcp_first);
- else
+ probe_nfs3_first, probe_proto);
+ } else
return nfs_probe_port(sap, salen, pmap,
probe_nfs2_only, probe_udp_only);
}
execl(START_STATD, START_STATD, NULL);
exit(1);
case -1: /* error */
- nfs_error(_("fork failed: %s"),
- strerror(errno));
+ nfs_error(_("%s: fork failed: %s"),
+ progname, strerror(errno));
break;
default: /* parent */
waitpid(pid, NULL,0);
return 0;
}
+/**
+ * nfs_advise_umount - ask the server to remove a share from it's rmtab
+ * @sap: pointer to IP address of server to call
+ * @salen: length of server address
+ * @pmap: partially filled-in mountd RPC service tuple
+ * @argp: directory path of share to "unmount"
+ *
+ * Returns one if the unmount call succeeded; zero if the unmount
+ * failed for any reason; rpccreateerr.cf_stat is set to reflect
+ * the nature of the error.
+ *
+ * We use a fast timeout since this call is advisory only.
+ */
+int nfs_advise_umount(const struct sockaddr *sap, const socklen_t salen,
+ const struct pmap *pmap, const dirpath *argp)
+{
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
+ struct pmap mnt_pmap = *pmap;
+ struct timeval timeout = {
+ .tv_sec = MOUNT_TIMEOUT >> 3,
+ };
+ CLIENT *client;
+ enum clnt_stat res = 0;
+
+ memcpy(saddr, sap, salen);
+ if (nfs_probe_mntport(saddr, salen, &mnt_pmap) == 0) {
+ if (verbose)
+ nfs_error(_("%s: Failed to discover mountd port%s"),
+ progname, clnt_spcreateerror(""));
+ return 0;
+ }
+ nfs_set_port(saddr, mnt_pmap.pm_port);
+
+ client = nfs_get_priv_rpcclient(saddr, salen, mnt_pmap.pm_prot,
+ mnt_pmap.pm_prog, mnt_pmap.pm_vers,
+ &timeout);
+ if (client == NULL) {
+ if (verbose)
+ nfs_error(_("%s: Failed to create RPC client%s"),
+ progname, clnt_spcreateerror(""));
+ return 0;
+ }
+
+ client->cl_auth = nfs_authsys_create();
+ if (client->cl_auth == NULL) {
+ if (verbose)
+ nfs_error(_("%s: Failed to create RPC auth handle"),
+ progname);
+ CLNT_DESTROY(client);
+ return 0;
+ }
+
+ res = CLNT_CALL(client, MOUNTPROC_UMNT,
+ (xdrproc_t)xdr_dirpath, (caddr_t)argp,
+ (xdrproc_t)xdr_void, NULL,
+ timeout);
+ if (res != RPC_SUCCESS) {
+ rpc_createerr.cf_stat = res;
+ CLNT_GETERR(client, &rpc_createerr.cf_error);
+ if (verbose)
+ nfs_error(_("%s: UMNT call failed: %s"),
+ progname, clnt_sperrno(res));
+
+ }
+ auth_destroy(client->cl_auth);
+ CLNT_DESTROY(client);
+
+ if (res != RPC_SUCCESS)
+ return 0;
+ return 1;
+}
+
/**
* nfs_call_umount - ask the server to remove a share from it's rmtab
* @mnt_server: address of RPC MNT program server
}
if (clnt) {
/* try to mount hostname:dirname */
- clnt->cl_auth = authunix_create_default();
- return clnt;
+ clnt->cl_auth = nfs_authsys_create();
+ if (clnt->cl_auth)
+ return clnt;
+ CLNT_DESTROY(clnt);
}
return NULL;
}
*
* Returns 1 and fills in @buf if successful; otherwise, zero.
*/
-static int nfs_ca_gai(const struct sockaddr *sap, const socklen_t salen,
+static int nfs_ca_gai(const struct sockaddr *sap,
struct sockaddr *buf, socklen_t *buflen)
{
struct addrinfo *gai_results;
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)buf;
if (nfs_ca_sockname(sap, salen, buf, buflen) == 0)
- if (nfs_ca_gai(sap, salen, buf, buflen) == 0)
+ if (nfs_ca_gai(sap, buf, buflen) == 0)
goto out_failed;
/*
out_failed:
*buflen = 0;
if (verbose)
- nfs_error(_("%s: failed to construct callback address"));
+ nfs_error(_("%s: failed to construct callback address"),
+ progname);
+ return 0;
+}
+
+/*
+ * "nfsprog" is supported only by the legacy mount command. The
+ * kernel mount client does not support this option.
+ *
+ * Returns TRUE if @program contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+static int
+nfs_nfs_program(struct mount_options *options, unsigned long *program)
+{
+ long tmp;
+
+ switch (po_get_numeric(options, "nfsprog", &tmp)) {
+ case PO_NOT_FOUND:
+ break;
+ case PO_FOUND:
+ if (tmp > 0) {
+ *program = tmp;
+ return 1;
+ }
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'nfsprog=' option"),
+ progname);
+ return 0;
+ }
+
+ /*
+ * NFS RPC program wasn't specified. The RPC program
+ * cannot be determined via an rpcbind query.
+ */
+ *program = nfs_getrpcbyname(NFSPROG, nfs_nfs_pgmtbl);
+ return 1;
+}
+
+/*
+ * Returns TRUE if @version contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+int
+nfs_nfs_version(struct mount_options *options, unsigned long *version)
+{
+ long tmp;
+
+ switch (po_rightmost(options, nfs_version_opttbl)) {
+ case 0: /* v2 */
+ *version = 2;
+ return 1;
+ case 1: /* v3 */
+ *version = 3;
+ return 1;
+ case 2: /* v4 */
+ *version = 4;
+ return 1;
+ case 3: /* vers */
+ switch (po_get_numeric(options, "vers", &tmp)) {
+ case PO_FOUND:
+ if (tmp >= 2 && tmp <= 4) {
+ *version = tmp;
+ return 1;
+ }
+ return 0;
+ case PO_NOT_FOUND:
+ nfs_error(_("%s: parsing error on 'vers=' option\n"),
+ progname);
+ return 0;
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'vers=' option"),
+ progname);
+ return 0;
+ }
+ case 4: /* nfsvers */
+ switch (po_get_numeric(options, "nfsvers", &tmp)) {
+ case PO_FOUND:
+ if (tmp >= 2 && tmp <= 4) {
+ *version = tmp;
+ return 1;
+ }
+ return 0;
+ case PO_NOT_FOUND:
+ nfs_error(_("%s: parsing error on 'nfsvers=' option\n"),
+ progname);
+ return 0;
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'nfsvers=' option"),
+ progname);
+ return 0;
+ }
+ }
+
+ /*
+ * NFS version wasn't specified. The pmap version value
+ * will be filled in later by an rpcbind query in this case.
+ */
+ *version = 0;
+ return 1;
+}
+
+/*
+ * Returns TRUE if @protocol contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value. On
+ * error, errno is set.
+ */
+int
+nfs_nfs_protocol(struct mount_options *options, unsigned long *protocol)
+{
+ sa_family_t family;
+ char *option;
+
+ switch (po_rightmost(options, nfs_transport_opttbl)) {
+ case 0: /* udp */
+ *protocol = IPPROTO_UDP;
+ return 1;
+ case 1: /* tcp */
+ *protocol = IPPROTO_TCP;
+ return 1;
+ case 2: /* rdma */
+ *protocol = NFSPROTO_RDMA;
+ return 1;
+ case 3: /* proto */
+ option = po_get(options, "proto");
+ if (option != NULL) {
+ if (!nfs_get_proto(option, &family, protocol)) {
+ errno = EPROTONOSUPPORT;
+ nfs_error(_("%s: Failed to find '%s' protocol"),
+ progname, option);
+ return 0;
+ }
+ return 1;
+ }
+ }
+
+ /*
+ * NFS transport protocol wasn't specified. The pmap
+ * protocol value will be filled in later by an rpcbind
+ * query in this case.
+ */
+ *protocol = 0;
+ return 1;
+}
+
+/*
+ * Returns TRUE if @port contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+static int
+nfs_nfs_port(struct mount_options *options, unsigned long *port)
+{
+ long tmp;
+
+ switch (po_get_numeric(options, "port", &tmp)) {
+ case PO_NOT_FOUND:
+ break;
+ case PO_FOUND:
+ if (tmp >= 1 && tmp <= 65535) {
+ *port = tmp;
+ return 1;
+ }
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'port=' option"),
+ progname);
+ return 0;
+ }
+
+ /*
+ * NFS service port wasn't specified. The pmap port value
+ * will be filled in later by an rpcbind query in this case.
+ */
+ *port = 0;
+ return 1;
+}
+
+#ifdef IPV6_SUPPORTED
+sa_family_t config_default_family = AF_UNSPEC;
+
+static int
+nfs_verify_family(sa_family_t UNUSED(family))
+{
+ return 1;
+}
+#else /* IPV6_SUPPORTED */
+sa_family_t config_default_family = AF_INET;
+
+static int
+nfs_verify_family(sa_family_t family)
+{
+ if (family != AF_INET)
+ return 0;
+
+ return 1;
+}
+#endif /* IPV6_SUPPORTED */
+
+/*
+ * Returns TRUE and fills in @family if a valid NFS protocol option
+ * is found, or FALSE if the option was specified with an invalid value
+ * or if the protocol family isn't supported. On error, errno is set.
+ */
+int nfs_nfs_proto_family(struct mount_options *options,
+ sa_family_t *family)
+{
+ unsigned long protocol;
+ char *option;
+ sa_family_t tmp_family = config_default_family;
+
+ switch (po_rightmost(options, nfs_transport_opttbl)) {
+ case 0: /* udp */
+ case 1: /* tcp */
+ case 2: /* rdma */
+ /* for compatibility; these are always AF_INET */
+ *family = AF_INET;
+ return 1;
+ case 3: /* proto */
+ option = po_get(options, "proto");
+ if (option != NULL &&
+ !nfs_get_proto(option, &tmp_family, &protocol)) {
+
+ nfs_error(_("%s: Failed to find '%s' protocol"),
+ progname, option);
+ errno = EPROTONOSUPPORT;
+ return 0;
+ }
+ }
+
+ if (!nfs_verify_family(tmp_family))
+ goto out_err;
+ *family = tmp_family;
+ return 1;
+out_err:
+ errno = EAFNOSUPPORT;
return 0;
+}
+/*
+ * "mountprog" is supported only by the legacy mount command. The
+ * kernel mount client does not support this option.
+ *
+ * Returns TRUE if @program contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+static int
+nfs_mount_program(struct mount_options *options, unsigned long *program)
+{
+ long tmp;
+
+ switch (po_get_numeric(options, "mountprog", &tmp)) {
+ case PO_NOT_FOUND:
+ break;
+ case PO_FOUND:
+ if (tmp > 0) {
+ *program = tmp;
+ return 1;
+ }
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'mountprog=' option"),
+ progname);
+ return 0;
+ }
+
+ /*
+ * MNT RPC program wasn't specified. The RPC program
+ * cannot be determined via an rpcbind query.
+ */
+ *program = nfs_getrpcbyname(MOUNTPROG, nfs_mnt_pgmtbl);
+ return 1;
+}
+
+/*
+ * Returns TRUE if @version contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+static int
+nfs_mount_version(struct mount_options *options, unsigned long *version)
+{
+ long tmp;
+
+ switch (po_get_numeric(options, "mountvers", &tmp)) {
+ case PO_NOT_FOUND:
+ break;
+ case PO_FOUND:
+ if (tmp >= 1 && tmp <= 4) {
+ *version = tmp;
+ return 1;
+ }
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'mountvers=' option"),
+ progname);
+ return 0;
+ }
+
+ /*
+ * MNT version wasn't specified. The pmap version value
+ * will be filled in later by an rpcbind query in this case.
+ */
+ *version = 0;
+ return 1;
+}
+
+/*
+ * Returns TRUE if @protocol contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value. On
+ * error, errno is set.
+ */
+static int
+nfs_mount_protocol(struct mount_options *options, unsigned long *protocol)
+{
+ sa_family_t family;
+ char *option;
+
+ option = po_get(options, "mountproto");
+ if (option != NULL) {
+ if (!nfs_get_proto(option, &family, protocol)) {
+ errno = EPROTONOSUPPORT;
+ nfs_error(_("%s: Failed to find '%s' protocol"),
+ progname, option);
+ return 0;
+ }
+ return 1;
+ }
+
+ /*
+ * MNT transport protocol wasn't specified. If the NFS
+ * transport protocol was specified, use that; otherwise
+ * set @protocol to zero. The pmap protocol value will
+ * be filled in later by an rpcbind query in this case.
+ */
+ return nfs_nfs_protocol(options, protocol);
+}
+
+/*
+ * Returns TRUE if @port contains a valid value for this option,
+ * or FALSE if the option was specified with an invalid value.
+ */
+static int
+nfs_mount_port(struct mount_options *options, unsigned long *port)
+{
+ long tmp;
+
+ switch (po_get_numeric(options, "mountport", &tmp)) {
+ case PO_NOT_FOUND:
+ break;
+ case PO_FOUND:
+ if (tmp >= 1 && tmp <= 65535) {
+ *port = tmp;
+ return 1;
+ }
+ case PO_BAD_VALUE:
+ nfs_error(_("%s: invalid value for 'mountport=' option"),
+ progname);
+ return 0;
+ }
+
+ /*
+ * MNT service port wasn't specified. The pmap port value
+ * will be filled in later by an rpcbind query in this case.
+ */
+ *port = 0;
+ return 1;
+}
+
+/*
+ * Returns TRUE and fills in @family if a valid MNT protocol option
+ * is found, or FALSE if the option was specified with an invalid value
+ * or if the protocol family isn't supported. On error, errno is set.
+ */
+int nfs_mount_proto_family(struct mount_options *options,
+ sa_family_t *family)
+{
+ unsigned long protocol;
+ char *option;
+ sa_family_t tmp_family = config_default_family;
+
+ option = po_get(options, "mountproto");
+ if (option != NULL) {
+ if (!nfs_get_proto(option, &tmp_family, &protocol)) {
+ nfs_error(_("%s: Failed to find '%s' protocol"),
+ progname, option);
+ errno = EPROTONOSUPPORT;
+ goto out_err;
+ }
+ if (!nfs_verify_family(tmp_family))
+ goto out_err;
+ *family = tmp_family;
+ return 1;
+ }
+
+ /*
+ * MNT transport protocol wasn't specified. If the NFS
+ * transport protocol was specified, derive the family
+ * from that; otherwise, return the default family for
+ * NFS.
+ */
+ return nfs_nfs_proto_family(options, family);
+out_err:
+ errno = EAFNOSUPPORT;
+ return 0;
+}
+
+/**
+ * nfs_options2pmap - set up pmap structs based on mount options
+ * @options: pointer to mount options
+ * @nfs_pmap: OUT: pointer to pmap arguments for NFS server
+ * @mnt_pmap: OUT: pointer to pmap arguments for mountd server
+ *
+ * Returns TRUE if the pmap options specified in @options have valid
+ * values; otherwise FALSE is returned.
+ */
+int nfs_options2pmap(struct mount_options *options,
+ struct pmap *nfs_pmap, struct pmap *mnt_pmap)
+{
+ if (!nfs_nfs_program(options, &nfs_pmap->pm_prog))
+ return 0;
+ if (!nfs_nfs_version(options, &nfs_pmap->pm_vers))
+ return 0;
+ if (!nfs_nfs_protocol(options, &nfs_pmap->pm_prot))
+ return 0;
+ if (!nfs_nfs_port(options, &nfs_pmap->pm_port))
+ return 0;
+
+ if (!nfs_mount_program(options, &mnt_pmap->pm_prog))
+ return 0;
+ if (!nfs_mount_version(options, &mnt_pmap->pm_vers))
+ return 0;
+ if (!nfs_mount_protocol(options, &mnt_pmap->pm_prot))
+ return 0;
+ if (!nfs_mount_port(options, &mnt_pmap->pm_port))
+ return 0;
+
+ return 1;
}
projects / nfs-utils.git / blobdiff