static int nfs_do_mount_v4(struct nfsmount_info *mi,
struct sockaddr *sap, socklen_t salen)
{
struct mount_options *options = po_dup(mi->options);
int result = 0;
if (!options) {
errno = ENOMEM;
return result;
}
if (mi->version == 0) {
if (po_contains(options, "mounthost") ||
po_contains(options, "mountaddr") ||
po_contains(options, "mountvers") ||
po_contains(options, "mountproto")) {
/*
* Since these mountd options are set assume version 3
* is wanted so error out with EPROTONOSUPPORT so the
* protocol negation starts with v3.
*/
errno = EPROTONOSUPPORT;
goto out_fail;
}
if (po_append(options, "vers=4") == PO_FAILED) {
errno = EINVAL;
goto out_fail;
}
}
if (!nfs_append_addr_option(sap, salen, options)) {
errno = EINVAL;
goto out_fail;
}
if (!nfs_append_clientaddr_option(sap, salen, options)) {
errno = EINVAL;
goto out_fail;
}
/*
* Update option string to be recorded in /etc/mtab.
*/
if (po_join(options, mi->extra_opts) == PO_FAILED) {
errno = ENOMEM;
goto out_fail;
}
if (verbose)
printf(_("%s: trying text-based options '%s'\n"),
progname, *mi->extra_opts);
result = nfs_sys_mount(mi, options);
out_fail:
po_destroy(options);
return result;
}
static int nfs_do_mount_v3v2(struct nfsmount_info *mi,
struct sockaddr *sap, socklen_t salen,
int checkv4)
{
struct mount_options *options = po_dup(mi->options);
int result = 0;
if (!options) {
errno = ENOMEM;
return result;
}
errno = 0;
if (!nfs_append_addr_option(sap, salen, options)) {
if (errno == 0)
errno = EINVAL;
goto out_fail;
}
if (!nfs_fix_mounthost_option(options, mi->hostname)) {
if (errno == 0)
errno = EINVAL;
goto out_fail;
}
if (!mi->fake && !nfs_verify_lock_option(options)) {
if (errno == 0)
errno = EINVAL;
goto out_fail;
}
/*
* Options we negotiate below may be stale by the time this
* file system is unmounted. In order to force umount.nfs
* to renegotiate with the server, only write the user-
* specified options, and not negotiated options, to /etc/mtab.
*/
if (po_join(options, mi->extra_opts) == PO_FAILED) {
errno = ENOMEM;
goto out_fail;
}
if (verbose)
printf(_("%s: trying text-based options '%s'\n"),
progname, *mi->extra_opts);
if (!nfs_rewrite_pmap_mount_options(options, checkv4, mi->local_ip))
goto out_fail;
result = nfs_sys_mount(mi, options);
out_fail:
po_destroy(options);
return result;
}
/*
* Set up mandatory non-version specific NFS mount options.
*
* Returns 1 if successful; otherwise zero.
*/
static int nfs_validate_options(struct nfsmount_info *mi)
{
struct addrinfo hint = {
.ai_protocol = (int)IPPROTO_UDP,
};
sa_family_t family;
int error;
char *option;
if (!nfs_parse_devname(mi->spec, &mi->hostname, NULL))
return 0;
if (!nfs_nfs_proto_family(mi->options, &family))
return 0;
hint.ai_family = (int)family;
error = getaddrinfo(mi->hostname, NULL, &hint, &mi->address);
if (error != 0) {
nfs_error(_("%s: Failed to resolve server %s: %s"),
progname, mi->hostname, gai_strerror(error));
mi->address = NULL;
return 0;
}
if (!nfs_set_version(mi))
return 0;
if (!nfs_append_sloppy_option(mi->options))
return 0;
if (!nfs_append_addr_option(mi->address->ai_addr,
mi->address->ai_addrlen, mi->options))
return 0;
option = po_get(mi->options, "srcaddr");
if (option) {
struct local_bind_info *local_ip;
local_ip = malloc(sizeof(*local_ip));
memset(local_ip, 0, sizeof(*local_ip));
if (nfs_parse_local_bind(local_ip, option,
mi->address->ai_addr->sa_family) >= 0) {
mi->local_ip = local_ip;
} else {
free(local_ip);
return 0;
}
}
return 1;
}
/*
* Get NFS/mnt server addresses from mount options
*
* Returns 1 and fills in @nfs_saddr, @nfs_salen, @mnt_saddr, and @mnt_salen
* if all goes well; otherwise zero.
*/
static int nfs_extract_server_addresses(struct mount_options *options,
struct sockaddr *nfs_saddr,
socklen_t *nfs_salen,
struct sockaddr *mnt_saddr,
socklen_t *mnt_salen)
{
char *option;
option = po_get(options, "addr");
if (option == NULL)
return 0;
if (!nfs_string_to_sockaddr(option, nfs_saddr, nfs_salen))
return 0;
option = po_get(options, "mountaddr");
if (option == NULL) {
memcpy(mnt_saddr, nfs_saddr, *nfs_salen);
*mnt_salen = *nfs_salen;
} else if (!nfs_string_to_sockaddr(option, mnt_saddr, mnt_salen))
return 0;
return 1;
}
