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authorNiels de Vos <ndevos@redhat.com>2015-01-01 13:15:45 +0100
committerVijay Bellur <vbellur@redhat.com>2015-03-15 00:45:50 -0700
commit0c3d3a796bda37d8439855baf00137ad17714620 (patch)
treebc01609f0802b967558099df8e30f66075167a09 /xlators
parent9f71b25f34a24741496875ab947f6f9c95ec277f (diff)
nfs: add support for separate 'exports' file
The Linux kernel NFS server uses /etc/exports to manage permissions for the NFS-clients. Extending the Gluster/NFS server to support a similar scheme is needed for many deployments in enterprise environments. BUG: 1143880 Change-Id: I7e6aa6bc6aa1cd5f52458e023387ed38de9823d7 Original-author: Shreyas Siravara <shreyas.siravara@gmail.com> CC: Richard Wareing <rwareing@fb.com> CC: Jiffin Tony Thottan <jthottan@redhat.com> Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/9361 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators')
-rw-r--r--xlators/nfs/server/src/Makefile.am4
-rw-r--r--xlators/nfs/server/src/exports.c1437
-rw-r--r--xlators/nfs/server/src/exports.h92
-rw-r--r--xlators/nfs/server/src/nfs-mem-types.h1
-rw-r--r--xlators/nfs/server/src/nfs.h3
5 files changed, 1535 insertions, 2 deletions
diff --git a/xlators/nfs/server/src/Makefile.am b/xlators/nfs/server/src/Makefile.am
index c72b314c458..94f47021178 100644
--- a/xlators/nfs/server/src/Makefile.am
+++ b/xlators/nfs/server/src/Makefile.am
@@ -4,13 +4,13 @@ nfsrpclibdir = $(top_srcdir)/rpc/rpc-lib/src
server_la_LDFLAGS = -module -avoid-version
server_la_SOURCES = nfs.c nfs-common.c nfs-fops.c nfs-inodes.c \
nfs-generics.c mount3.c nfs3-fh.c nfs3.c nfs3-helpers.c nlm4.c \
- nlmcbk_svc.c mount3udp_svc.c acl3.c netgroups.c
+ nlmcbk_svc.c mount3udp_svc.c acl3.c netgroups.c exports.c
server_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la \
$(top_builddir)/api/src/libgfapi.la
noinst_HEADERS = nfs.h nfs-common.h nfs-fops.h nfs-inodes.h nfs-generics.h \
mount3.h nfs3-fh.h nfs3.h nfs3-helpers.h nfs-mem-types.h nlm4.h \
- acl3.h netgroups.h
+ acl3.h netgroups.h exports.h
AM_CPPFLAGS = $(GF_CPPFLAGS) \
-DLIBDIR=\"$(libdir)/glusterfs/$(PACKAGE_VERSION)/auth\" \
diff --git a/xlators/nfs/server/src/exports.c b/xlators/nfs/server/src/exports.c
new file mode 100644
index 00000000000..3f704bdf9ce
--- /dev/null
+++ b/xlators/nfs/server/src/exports.c
@@ -0,0 +1,1437 @@
+/*
+ Copyright 2014-present Facebook. All Rights Reserved
+
+ This file is part of GlusterFS.
+
+ Author :
+ Shreyas Siravara <shreyas.siravara@gmail.com>
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#include "exports.h"
+#include "hashfn.h"
+#include "parse-utils.h"
+
+static void _exp_dict_destroy (dict_t *ng_dict);
+static void _export_options_print (const struct export_options *opts);
+static void _export_options_deinit (struct export_options *opts);
+static void _export_dir_deinit (struct export_dir *dir);
+
+static struct parser *netgroup_parser;
+static struct parser *hostname_parser;
+static struct parser *options_parser;
+
+/**
+ * _exp_init_parsers -- Initialize parsers to be used in this file
+ *
+ * @return: success: 0
+ * failure: -1
+ */
+static int
+_exp_init_parsers ()
+{
+ int ret = -1;
+
+ netgroup_parser = parser_init (NETGROUP_REGEX_PATTERN);
+ if (!netgroup_parser)
+ goto out;
+
+ hostname_parser = parser_init (HOSTNAME_REGEX_PATTERN);
+ if (!hostname_parser)
+ goto out;
+
+ options_parser = parser_init (OPTIONS_REGEX_PATTERN);
+ if (!options_parser)
+ goto out;
+
+ ret = 0;
+out:
+ return ret;
+}
+
+/**
+ * _exp_deinit_parsers -- Free parsers used in this file
+ */
+static void
+_exp_deinit_parsers ()
+{
+ parser_deinit (netgroup_parser);
+ parser_deinit (hostname_parser);
+ parser_deinit (options_parser);
+}
+
+/**
+ * _export_file_init -- Initialize an exports file structure.
+ *
+ * @return : success: Pointer to an allocated exports file struct
+ * failure: NULL
+ *
+ * Not for external use.
+ */
+struct exports_file *
+_exports_file_init ()
+{
+ struct exports_file *file = NULL;
+
+ file = GF_CALLOC (1, sizeof (*file), gf_nfs_mt_exports);
+ if (!file) {
+ gf_log (GF_EXP, GF_LOG_CRITICAL,
+ "Failed to allocate file struct!");
+ goto out;
+ }
+
+ file->exports_dict = dict_new ();
+ file->exports_map = dict_new ();
+ if (!file->exports_dict || !file->exports_map) {
+ gf_log (GF_EXP, GF_LOG_CRITICAL, "Failed to allocate dict!");
+ goto free_and_out;
+ }
+
+
+
+ goto out;
+
+free_and_out:
+ GF_FREE (file);
+ file = NULL;
+out:
+ return file;
+}
+
+/**
+ * _exp_file_dict_destroy -- Delete each item in the dict
+ *
+ * @dict : Dict to free elements from
+ * @key : Key in the dict we are on
+ * @val : Value associated with that dict
+ * @tmp : Not used
+ *
+ * Not for external use.
+ */
+static int
+_exp_file_dict_destroy (dict_t *dict, char *key, data_t *val, void *tmp)
+{
+ struct export_dir *dir = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, dict, out);
+
+ if (val) {
+ dir = (struct export_dir *)val->data;
+
+ _export_dir_deinit (dir);
+ val->data = NULL;
+ dict_del (dict, key);
+ }
+
+out:
+ return 0;
+}
+
+/**
+ * _exp_file_deinit -- Free memory used by an export file
+ *
+ * @expfile : Pointer to the exports file to free
+ *
+ * Externally usable.
+ */
+void
+exp_file_deinit (struct exports_file *expfile)
+{
+ if (!expfile || !expfile->exports_dict)
+ goto out;
+
+ dict_foreach (expfile->exports_dict, _exp_file_dict_destroy, NULL);
+ GF_FREE (expfile->filename);
+ GF_FREE (expfile);
+out:
+ return;
+}
+
+/**
+ * _export_dir_init -- Initialize an export directory structure.
+ *
+ * @return : success: Pointer to an allocated exports directory struct
+ * failure: NULL
+ *
+ * Not for external use.
+ */
+static struct export_dir *
+_export_dir_init ()
+{
+ struct export_dir *expdir = GF_CALLOC (1, sizeof (*expdir),
+ gf_nfs_mt_exports);
+
+ if (!expdir)
+ gf_log (GF_EXP, GF_LOG_CRITICAL,
+ "Failed to allocate export dir structure!");
+
+ return expdir;
+}
+
+/**
+ * _export_dir_deinit -- Free memory used by an export dir
+ *
+ * @expdir : Pointer to the export directory to free
+ *
+ * Not for external use.
+ */
+static void
+_export_dir_deinit (struct export_dir *dir)
+{
+ GF_VALIDATE_OR_GOTO (GF_EXP, dir, out);
+ GF_FREE (dir->dir_name);
+ _exp_dict_destroy (dir->netgroups);
+ _exp_dict_destroy (dir->hosts);
+ GF_FREE (dir);
+
+out:
+ return;
+}
+
+
+/**
+ * _export_item_print -- Print the elements in the export item.
+ *
+ * @expdir : Pointer to the item struct to print out.
+ *
+ * Not for external use.
+ */
+static void
+_export_item_print (const struct export_item *item)
+{
+ GF_VALIDATE_OR_GOTO (GF_EXP, item, out);
+ printf ("%s", item->name);
+ _export_options_print (item->opts);
+out:
+ return;
+}
+
+/**
+ * _export_item_init -- Initialize an export item structure
+ *
+ * @return : success: Pointer to an allocated exports item struct
+ * failure: NULL
+ *
+ * Not for external use.
+ */
+static struct export_item *
+_export_item_init ()
+{
+ struct export_item *item = GF_CALLOC (1, sizeof (*item),
+ gf_nfs_mt_exports);
+
+ if (!item)
+ gf_log (GF_EXP, GF_LOG_CRITICAL,
+ "Failed to allocate export item!");
+
+ return item;
+}
+
+/**
+ * _export_item_deinit -- Free memory used by an export item
+ *
+ * @expdir : Pointer to the export item to free
+ *
+ * Not for external use.
+ */
+static void
+_export_item_deinit (struct export_item *item)
+{
+ if (!item)
+ return;
+
+ _export_options_deinit (item->opts);
+ GF_FREE (item->name);
+ GF_FREE (item);
+}
+
+/**
+ * _export_host_init -- Initialize an export options struct
+ *
+ * @return : success: Pointer to an allocated options struct
+ * failure: NULL
+ *
+ * Not for external use.
+ */
+static struct export_options *
+_export_options_init ()
+{
+ struct export_options *opts = GF_CALLOC (1, sizeof (*opts),
+ gf_nfs_mt_exports);
+
+ if (!opts)
+ gf_log (GF_EXP, GF_LOG_CRITICAL,
+ "Failed to allocate options structure!");
+
+ return opts;
+}
+
+/**
+ * _export_options_deinit -- Free memory used by a options struct
+ *
+ * @expdir : Pointer to the options struct to free
+ *
+ * Not for external use.
+ */
+static void
+_export_options_deinit (struct export_options *opts)
+{
+ if (!opts)
+ return;
+
+ GF_FREE (opts->anon_uid);
+ GF_FREE (opts->sec_type);
+ GF_FREE (opts);
+}
+
+/**
+ * _export_options_print -- Print the elements in the options struct.
+ *
+ * @expdir : Pointer to the options struct to print out.
+ *
+ * Not for external use.
+ */
+static void
+_export_options_print (const struct export_options *opts)
+{
+ GF_VALIDATE_OR_GOTO (GF_EXP, opts, out);
+
+ printf ("(");
+ if (opts->rw)
+ printf ("rw,");
+ else
+ printf ("ro,");
+
+ if (opts->nosuid)
+ printf ("nosuid,");
+
+ if (opts->root)
+ printf ("root,");
+
+ if (opts->anon_uid)
+ printf ("anonuid=%s,", opts->anon_uid);
+
+ if (opts->sec_type)
+ printf ("sec=%s,", opts->sec_type);
+
+ printf (") ");
+out:
+ return;
+}
+
+/**
+ * __exp_dict_free_walk -- Delete each item in the dict
+ *
+ * @dict : Dict to free elements from
+ * @key : Key in the dict we are on
+ * @val : Value associated with that dict
+ * @tmp : Not used
+ *
+ * Passed as a function pointer to dict_foreach()
+ *
+ * Not for external use.
+ */
+static int
+__exp_dict_free_walk (dict_t *dict, char *key, data_t *val, void *tmp)
+{
+ if (val) {
+ _export_item_deinit ((struct export_item *)val->data);
+ val->data = NULL;
+ dict_del (dict, key);
+ }
+ return 0;
+}
+
+/**
+ * _exp_dict_destroy -- Delete all the items from this dict
+ * through the helper function above.
+ *
+ * @ng_dict : Dict to free
+ *
+ * Not for external use.
+ */
+static void
+_exp_dict_destroy (dict_t *ng_dict)
+{
+ if (!ng_dict)
+ goto out;
+
+ dict_foreach (ng_dict, __exp_dict_free_walk, NULL);
+out:
+ return;
+}
+
+/**
+ * exp_file_dir_from_uuid -- Using a uuid as the key, retrieve an exports
+ * directory from the file.
+ *
+ * @file: File to retrieve data from
+ * @export_uuid: UUID of the export (mountid in the NFS xlator)
+ *
+ * @return : success: Pointer to an export dir struct
+ * failure: NULL
+ */
+struct export_dir *
+exp_file_dir_from_uuid (const struct exports_file *file,
+ const uuid_t export_uuid)
+{
+ char export_uuid_str[512] = {0, };
+ data_t *dirdata = NULL;
+ struct export_dir *dir = NULL;
+
+ uuid_unparse (export_uuid, export_uuid_str);
+
+ dirdata = dict_get (file->exports_map, export_uuid_str);
+ if (dirdata)
+ dir = (struct export_dir *)dirdata->data;
+
+ return dir;
+}
+
+/**
+ * _exp_file_insert -- Insert the exports directory into the file structure
+ * using the directory as a dict. Also hashes the dirname,
+ * stores it in a uuid type, converts the uuid type to a
+ * string and uses that as the key to the exports map.
+ * The exports map maps an export "uuid" to an export
+ * directory struct.
+ *
+ * @file : Exports file struct to insert into
+ * @dir : Export directory to insert
+ *
+ * Not for external use.
+ */
+static void
+_exp_file_insert (struct exports_file *file, struct export_dir *dir)
+{
+ data_t *dirdata = NULL;
+ uint32_t hashedval = 0;
+ uuid_t export_uuid = {0, };
+ char export_uuid_str[512] = {0, };
+ char *dirdup = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, file, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, dir, out);
+
+ dirdata = bin_to_data (dir, sizeof (*dir));
+ dict_set (file->exports_dict, dir->dir_name, dirdata);
+
+ dirdup = strdupa (dir->dir_name);
+ while (strlen (dirdup) > 0 && dirdup[0] == '/')
+ dirdup++;
+
+ hashedval = SuperFastHash (dirdup, strlen (dirdup));
+ memset (export_uuid, 0, sizeof (export_uuid));
+ memcpy (export_uuid, &hashedval, sizeof (hashedval));
+ uuid_unparse (export_uuid, export_uuid_str);
+
+ dict_set (file->exports_map, export_uuid_str, dirdata);
+out:
+ return;
+}
+
+/**
+ * __exp_item_print_walk -- Print all the keys and values in the dict
+ *
+ * @dict : the dict to walk
+ * @key : the key in the dict we are currently on
+ * @val : the value in the dict assocated with the key
+ * @tmp : Additional parameter data (not used)
+ *
+ * Passed as a function pointer to dict_foreach ().
+ *
+ * Not for external use.
+ */
+static int
+__exp_item_print_walk (dict_t *dict, char *key, data_t *val, void *tmp)
+{
+ if (val)
+ _export_item_print ((struct export_item *)val->data);
+
+ return 0;
+}
+
+/**
+ * __exp_file_print_walk -- Print all the keys and values in the dict
+ *
+ * @dict : the dict to walk
+ * @key : the key in the dict we are currently on
+ * @val : the value in the dict assocated with the key
+ * @tmp : Additional parameter data (not used)
+ *
+ * Passed as a function pointer to dict_foreach ().
+ *
+ * Not for external use.
+ */
+static int
+__exp_file_print_walk (dict_t *dict, char *key, data_t *val, void *tmp)
+{
+ if (val) {
+ struct export_dir *dir = (struct export_dir *)val->data;
+
+ printf ("%s ", key);
+
+ if (dir->netgroups)
+ dict_foreach (dir->netgroups, __exp_item_print_walk,
+ NULL);
+
+ if (dir->hosts)
+ dict_foreach (dir->hosts, __exp_item_print_walk, NULL);
+
+ printf ("\n");
+ }
+ return 0;
+}
+
+/**
+ * exp_file_print -- Print out the contents of the exports file
+ *
+ * @file : Exports file to print
+ *
+ * Not for external use.
+ */
+void
+exp_file_print (const struct exports_file *file)
+{
+ GF_VALIDATE_OR_GOTO (GF_EXP, file, out);
+ dict_foreach (file->exports_dict, __exp_file_print_walk, NULL);
+out:
+ return;
+}
+
+#define __exp_line_get_opt_val(val, equals, ret, errlabel) \
+ do { \
+ (val) = (equals) + 1; \
+ if (!(*(val))) { \
+ (ret) = 1; \
+ goto errlabel; \
+ } \
+ } while (0) \
+
+enum gf_exp_parse_status {
+ GF_EXP_PARSE_SUCCESS = 0,
+ GF_EXP_PARSE_ITEM_NOT_FOUND = 1,
+ GF_EXP_PARSE_ITEM_FAILURE = 2,
+ GF_EXP_PARSE_ITEM_NOT_IN_MOUNT_STATE = 3,
+ GF_EXP_PARSE_LINE_IGNORING = 4,
+};
+
+/**
+ * __exp_line_opt_key_value_parse -- Parse the key-value options in the options
+ * string.
+ *
+ * Given a string like (sec=sys,anonuid=0,rw), to parse, this function
+ * will get called once with 'sec=sys' and again with 'anonuid=0'.
+ * It will check for the '=', make sure there is data to be read
+ * after the '=' and copy the data into the options struct.
+ *
+ * @option : An option string like sec=sys or anonuid=0
+ * @opts : Pointer to an struct export_options that holds all the export
+ * options.
+ *
+ * @return: success: GF_EXP_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * -EINVAL on bad args, -ENOMEM on allocation errors.
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_opt_key_value_parse (char *option, struct export_options *opts)
+{
+ char *equals = NULL;
+ char *right = NULL;
+ char *strmatch = option;
+ int ret = -EINVAL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, option, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, opts, out);
+
+ equals = strchr (option, '=');
+ if (!equals) {
+ ret = GF_EXP_PARSE_ITEM_FAILURE;
+ goto out;
+ }
+
+ *equals = 0;
+ /* Now that an '=' has been found the left side is the option and
+ * the right side is the value. We simply have to compare those and
+ * extract it.
+ */
+ if (strcmp (strmatch, "anonuid") == 0) {
+ *equals = '=';
+ /* Get the value for this option */
+ __exp_line_get_opt_val (right, equals, ret, out);
+ opts->anon_uid = gf_strdup (right);
+ GF_CHECK_ALLOC (opts->anon_uid, ret, out);
+ } else if (strcmp (strmatch, "sec") == 0) {
+ *equals = '=';
+ /* Get the value for this option */
+ __exp_line_get_opt_val (right, equals, ret, out);
+ opts->sec_type = gf_strdup (right);
+ GF_CHECK_ALLOC (opts->sec_type, ret, out);
+ } else {
+ *equals = '=';
+ ret = GF_EXP_PARSE_ITEM_FAILURE;
+ goto out;
+ }
+
+ ret = GF_EXP_PARSE_SUCCESS;
+out:
+ return ret;
+}
+
+/**
+ * __exp_line_opt_parse -- Parse the options part of an
+ * exports or netgroups string.
+ *
+ * @opt_str : The option string to parse
+ * @exp_opts : Double pointer to the options we are going
+ * to allocate and setup.
+ *
+ *
+ * @return: success: GF_EXP_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * -EINVAL on bad args, -ENOMEM on allocation errors.
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_opt_parse (const char *opt_str, struct export_options **exp_opts)
+{
+ struct export_options *opts = NULL;
+ char *strmatch = NULL;
+ int ret = -EINVAL;
+ char *equals = NULL;
+
+ ret = parser_set_string (options_parser, opt_str);
+ if (ret < 0)
+ goto out;
+
+ while ((strmatch = parser_get_next_match (options_parser))) {
+ if (!opts) {
+ /* If the options have not been allocated,
+ * allocate it.
+ */
+ opts = _export_options_init ();
+ if (!opts) {
+ ret = -ENOMEM;
+ parser_unset_string (options_parser);
+ goto out;
+ }
+ }
+
+ /* First, check for all the boolean options Second, check for
+ * an '=', and check the available options there. The string
+ * parsing here gets slightly messy, but the concept itself
+ * is pretty simple.
+ */
+ equals = strchr (strmatch, '=');
+ if (strcmp (strmatch, "root") == 0)
+ opts->root = _gf_true;
+ else if (strcmp (strmatch, "ro") == 0)
+ opts->rw = _gf_false;
+ else if (strcmp (strmatch, "rw") == 0)
+ opts->rw = _gf_true;
+ else if (strcmp (strmatch, "nosuid") == 0)
+ opts->nosuid = _gf_true;
+ else if (equals) {
+ ret = __exp_line_opt_key_value_parse (strmatch, opts);
+ if (ret < 0) {
+ /* This means invalid key value options were
+ * specified, or memory allocation failed.
+ * The ret value gets bubbled up to the caller.
+ */
+ GF_FREE (strmatch);
+ parser_unset_string (options_parser);
+ _export_options_deinit (opts);
+ goto out;
+ }
+ } else
+ gf_log (GF_EXP, GF_LOG_WARNING,
+ "Could not find any valid options for "
+ "string: %s", strmatch);
+ GF_FREE (strmatch);
+ }
+
+ if (!opts) {
+ /* If opts is not allocated
+ * that means no matches were found
+ * which is a parse error. Not marking
+ * it as "not found" because it is a parse
+ * error to not have options.
+ */
+ ret = GF_EXP_PARSE_ITEM_FAILURE;
+ parser_unset_string (options_parser);
+ goto out;
+ }
+
+ *exp_opts = opts;
+ parser_unset_string (options_parser);
+ ret = GF_EXP_PARSE_SUCCESS;
+out:
+ return ret;
+}
+
+
+/**
+ * __exp_line_ng_host_str_parse -- Parse the netgroup or host string
+ *
+ * e.g. @mygroup(<options>), parsing @mygroup and (<options>)
+ * or myhost001.dom(<options>), parsing myhost001.dom and (<options>)
+ *
+ * @line : The line to parse
+ * @exp_item : Double pointer to a struct export_item
+ *
+ * @return: success: GF_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * -EINVAL on bad args, -ENOMEM on allocation errors.
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_ng_host_str_parse (char *str, struct export_item **exp_item)
+{
+ struct export_item *item = NULL;
+ int ret = -EINVAL;
+ char *parens = NULL;
+ char *optstr = NULL;
+ struct export_options *exp_opts = NULL;
+ char *item_name = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, str, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, exp_item, out);
+
+ /* A netgroup/host string looks like this:
+ * @test(sec=sys,rw,anonuid=0) or host(sec=sys,rw,anonuid=0)
+ * We want to extract the name, 'test' or 'host'
+ * Again, we could setup a regex and use it here,
+ * but its simpler to find the '(' and copy until
+ * there.
+ */
+ parens = strchr (str, '(');
+ if (!parens) {
+ /* Parse error if there are no parens. */
+ ret = GF_EXP_PARSE_ITEM_FAILURE;
+ goto out;
+ }
+
+ *parens = '\0'; /* Temporarily terminate it so we can do a copy */
+
+ if (strlen (str) > FQDN_MAX_LEN) {
+ ret = GF_EXP_PARSE_ITEM_FAILURE;
+ goto out;
+ }
+
+ /* Strip leading whitespaces */
+ while (*str == ' ' || *str == '\t')
+ str++;
+
+ item_name = gf_strdup (str);
+ GF_CHECK_ALLOC (item_name, ret, out);
+
+ /* Initialize an export item for this */
+ item = _export_item_init ();
+ GF_CHECK_ALLOC (item, ret, free_and_out);
+ item->name = item_name;
+
+ *parens = '('; /* Restore the string */
+
+ /* Options start at the parantheses */
+ optstr = parens;
+
+ ret = __exp_line_opt_parse (optstr, &exp_opts);
+ if (ret != 0) {
+ /* Bubble up the error to the caller */
+ _export_item_deinit (item);
+ goto out;
+ }
+
+ item->opts = exp_opts;
+
+ *exp_item = item;
+
+ ret = GF_EXP_PARSE_SUCCESS;
+ goto out;
+
+free_and_out:
+ GF_FREE (item_name);
+out:
+ return ret;
+}
+
+/**
+ * __exp_line_ng_parse -- Extract the netgroups in the line
+ * and call helper functions to parse
+ * the string.
+ *
+ * The call chain goes like this:
+ *
+ * 1) __exp_line_ng_parse ("/test @test(sec=sys,rw,anonuid=0)")
+ * 2) __exp_line_ng_str_parse ("@test(sec=sys,rw,anonuid=0)");
+ * 3) __exp_line_opt_parse("(sec=sys,rw,anonuid=0)");
+ *
+ *
+ * @line : The line to parse
+ * @ng_dict : Double pointer to the dict we want to
+ * insert netgroups into.
+ *
+ * Allocates the dict, extracts netgroup strings from the line,
+ * parses them into a struct export_item structure and inserts
+ * them in the dict.
+ *
+ * @return: success: GF_EXP_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * GF_EXP_PARSE_ITEM_NOT_FOUND if the netgroup was not found
+ * -EINVAL on bad args, -ENOMEM on allocation errors.
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_ng_parse (const char *line, dict_t **ng_dict)
+{
+ dict_t *netgroups = NULL;
+ char *strmatch = NULL;
+ int ret = -EINVAL;
+ struct export_item *exp_ng = NULL;
+ data_t *ngdata = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, line, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, ng_dict, out);
+
+ *ng_dict = NULL; /* Will be set if parse is successful */
+
+ /* Initialize a parser with the line to parse
+ * and the regex used to parse it.
+ */
+ ret = parser_set_string (netgroup_parser, line);
+ if (ret < 0) {
+ goto out;
+ }
+
+ while ((strmatch = parser_get_next_match (netgroup_parser))) {
+ if (!netgroups) {
+ /* Allocate a new dict to store the netgroups. */
+ netgroups = dict_new ();
+ if (!netgroups) {
+ ret = -ENOMEM;
+ goto free_and_out;
+ }
+ }
+
+ ret = __exp_line_ng_host_str_parse (strmatch, &exp_ng);
+
+ if (ret != 0) {
+ /* Parsing or other critical errors.
+ * caller will handle return value.
+ */
+ _exp_dict_destroy (netgroups);
+ goto free_and_out;
+ }
+
+ ngdata = bin_to_data (exp_ng, sizeof (*exp_ng));
+ dict_set (netgroups, exp_ng->name, ngdata);
+
+ /* Free this matched string and continue parsing. */
+ GF_FREE (strmatch);
+ }
+
+ /* If the netgroups dict was not allocated, then we know that
+ * no matches were found.
+ */
+ if (!netgroups) {
+ ret = GF_EXP_PARSE_ITEM_NOT_FOUND;
+ parser_unset_string (netgroup_parser);
+ goto out;
+ }
+
+ ret = GF_EXP_PARSE_SUCCESS;
+ *ng_dict = netgroups;
+
+free_and_out:
+ parser_unset_string (netgroup_parser);
+ GF_FREE (strmatch);
+out:
+ return ret;
+}
+
+/**
+ * __exp_line_host_parse -- Extract the hosts in the line
+ * and call helper functions to parse
+ * the string.
+ *
+ * The call chain goes like this:
+ *
+ * 1) __exp_line_host_parse ("/test hostip(sec=sys,rw,anonuid=0)")
+ * 2) __exp_line_ng_host_str_parse ("hostip(sec=sys,rw,anonuid=0)");
+ * 3) __exp_line_opt_parse("(sec=sys,rw,anonuid=0)");
+ *
+ *
+ * @line : The line to parse
+ * @ng_dict : Double pointer to the dict we want to
+ * insert hosts into.
+ *
+ * Allocates the dict, extracts host strings from the line,
+ * parses them into a struct export_item structure and inserts
+ * them in the dict.
+ *
+ * @return: success: GF_EXP_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * GF_EXP_PARSE_ITEM_NOT_FOUND if the host was not found,
+ * -EINVAL on bad args, -ENOMEM on allocation errors.
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_host_parse (const char *line, dict_t **host_dict)
+{
+ dict_t *hosts = NULL;
+ char *strmatch = NULL;
+ int ret = -EINVAL;
+ struct export_item *exp_host = NULL;
+ data_t *hostdata = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, line, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, host_dict, out);
+
+ *host_dict = NULL;
+
+ /* Initialize a parser with the line to parse and the regex used to
+ * parse it.
+ */
+ ret = parser_set_string (hostname_parser, line);
+ if (ret < 0) {
+ goto out;
+ }
+
+ while ((strmatch = parser_get_next_match (hostname_parser))) {
+ if (!hosts) {
+ /* Allocate a new dictto store the netgroups. */
+ hosts = dict_new ();
+ GF_CHECK_ALLOC (hosts, ret, free_and_out);
+ }
+
+ ret = __exp_line_ng_host_str_parse (strmatch, &exp_host);
+
+ if (ret != 0) {
+ /* Parsing or other critical error, free allocated
+ * memory and exit. The caller will handle the errors.
+ */
+ _exp_dict_destroy (hosts);
+ goto free_and_out;
+ }
+
+ /* Insert export item structure into the hosts dict. */
+ hostdata = bin_to_data (exp_host, sizeof (*exp_host));
+ dict_set (hosts, exp_host->name, hostdata);
+
+
+ /* Free this matched string and continue parsing.*/
+ GF_FREE (strmatch);
+ }
+
+ /* If the hosts dict was not allocated, then we know that
+ * no matches were found.
+ */
+ if (!exp_host) {
+ ret = GF_EXP_PARSE_ITEM_NOT_FOUND;
+ parser_unset_string (hostname_parser);
+ goto out;
+ }
+
+ ret = GF_EXP_PARSE_SUCCESS;
+ *host_dict = hosts;
+
+free_and_out:
+ parser_unset_string (hostname_parser);
+ GF_FREE (strmatch);
+out:
+ return ret;
+}
+
+
+/**
+ * __exp_line_dir_parse -- Extract directory name from a line in the exports
+ * file.
+ *
+ * @line : The line to parse
+ * @dirname : Double pointer to the string we need to hold the directory name.
+ * If the parsing failed, the string will point to NULL, otherwise
+ * it will point to a valid memory region that is allocated by
+ * this function.
+ * @check_ms: If this variable is set then we cross check the directory line
+ * with whats in gluster's vol files and reject them if they don't
+ * match.
+ *
+ * @return : success: GF_EXP_PARSE_SUCCESS
+ * failure: GF_EXP_PARSE_ITEM_FAILURE on parse failure,
+ * -EINVAL on bad arguments, -ENOMEM on allocation failures,
+ * GF_EXP_PARSE_ITEM_NOT_IN_MOUNT_STATE if we failed to match
+ * with gluster's mountstate.
+ *
+ * The caller is responsible for freeing memory allocated by this function
+ *
+ * Not for external use.
+ */
+static int
+__exp_line_dir_parse (const char *line, char **dirname, struct mount3_state *ms)
+{
+ char *dir = NULL;
+ char *delim = NULL;
+ int ret = -EINVAL;
+ char *linedup = NULL;
+ struct mnt3_export *mnt3export = NULL;
+ size_t dirlen = 0;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, line, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, dirname, out);
+
+ /* Duplicate the line because we don't
+ * want to modify the original string.
+ */
+ linedup = strdupa (line);
+
+ /* We use strtok_r () here to split the string by space/tab and get the
+ * the result. We only need the first result of the split.
+ * a simple task. It is worth noting that dirnames always have to be
+ * validated against gluster's vol files so if they don't
+ * match it will be rejected.
+ */
+ dir = linedup;
+ delim = linedup + strcspn (linedup, " \t");
+ *delim = 0;
+
+ if (ms) {
+ /* Match the directory name with an existing
+ * export in the mount state.
+ */
+ mnt3export = mnt3_mntpath_to_export (ms, dir, _gf_true);
+ if (!mnt3export) {
+ gf_log (GF_EXP, GF_LOG_DEBUG, "%s not in mount state, "
+ "ignoring!", dir);
+ ret = GF_EXP_PARSE_ITEM_NOT_IN_MOUNT_STATE;
+ goto out;
+ }
+ }
+
+ /* Directories can be 1024 bytes in length, check
+ * that the argument provided adheres to
+ * that restriction.
+ */
+ if (strlen (dir) > DIR_MAX_LEN) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* Copy the result of the split */
+ dir = gf_strdup (dir);
+ GF_CHECK_ALLOC (dir, ret, out);
+
+ /* Ensure that trailing slashes are stripped before storing the name */
+ dirlen = strlen (dir);
+ if (dirlen > 0 && dir[dirlen - 1] == '/')
+ dir[dirlen - 1] = '\0';
+
+
+ /* Set the argument to point to the allocated string */
+ *dirname = dir;
+ ret = GF_EXP_PARSE_SUCCESS;
+out:
+ return ret;
+}
+
+/**
+ * _exp_line_parse -- Parse a line in an exports file into a structure
+ * that holds all the parts of the line. An exports
+ * structure has a dict of netgroups and a dict of hosts.
+ *
+ * An export line looks something like this /test @test(sec=sys,rw,anonuid=0)
+ * or /test @test(sec=sys,rw,anonuid=0) hostA(sec=sys,rw,anonuid=0), etc.
+ *
+ * We use regexes to parse the line into three separate pieces:
+ * 1) The directory (exports.h -- DIRECTORY_REGEX_PATTERN)
+ * 2) The netgroup if it exists (exports.h -- NETGROUP_REGEX_PATTERN)
+ * 3) The host if it exists (exports.h -- HOST_REGEX_PATTERN)
+ *
+ * In this case, the netgroup would be @test(sec=sys,rw,anonuid=0)
+ * and the host would be hostA(sec=sys,rw,anonuid=0).
+ *
+ * @line : The line to parse
+ * @dir : Double pointer to the struct we need to parse the line into.
+ * If the parsing failed, the struct will point to NULL,
+ * otherwise it will point to a valid memory region that is
+ * allocated by this function.
+ * @parse_full : This parameter tells us whether we should parse all the lines
+ * in the file, even if they are not present in gluster's config.
+ * The gluster config holds the volumes that it exports so
+ * if parse_full is set to FALSE then we will ensure that
+ * the export file structure holds only those volumes
+ * that gluster has exported. It is important to note that
+ * If gluster exports a volume named '/test', '/test' and all
+ * of its subdirectories that may be in the exports file
+ * are valid exports.
+ * @ms : The mount state that holds the list of volumes that gluster
+ * currently exports.
+ *
+ * @return : success: GF_EXP_PARSE_SUCCESS on success, -EINVAL on bad arguments,
+ * -ENOMEM on memory allocation errors,
+ * GF_EXP_PARSE_LINE_IGNORING if we ignored the line,
+ * GF_EXP_PARSE_ITEM_FAILURE if there was error parsing
+ * failure: NULL
+ *
+ * The caller is responsible for freeing memory allocated by this function
+ * The caller should free this memory using the _exp_dir_deinit () function.
+ *
+ * Not for external use.
+ */
+static int
+_exp_line_parse (const char *line, struct export_dir **dir,
+ gf_boolean_t parse_full, struct mount3_state *ms)
+{
+ struct export_dir *expdir = NULL;
+ char *dirstr = NULL;
+ dict_t *netgroups = NULL;
+ dict_t *hosts = NULL;
+ int ret = -EINVAL;
+ gf_boolean_t netgroups_failed = _gf_false;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, line, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, dir, out);
+
+ if (*line == '#' || *line == ' ' || *line == '\t'
+ || *line == '\0' || *line == '\n') {
+ ret = GF_EXP_PARSE_LINE_IGNORING;
+ goto out;
+ }
+
+ expdir = _export_dir_init ();
+ if (!expdir) {
+ *dir = NULL;
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* Get the directory string from the line */
+ ret = __exp_line_dir_parse (line, &dirstr, ms);
+ if (ret < 0) {
+ gf_log (GF_EXP, GF_LOG_ERROR, "Parsing directory failed: %s",
+ strerror (-ret));
+ /* If parsing the directory failed,
+ * we should simply fail because there's
+ * nothing else we can extract from the string to make
+ * the data valuable.
+ */
+ goto free_and_out;
+ }
+
+ /* Set the dir str */
+ expdir->dir_name = dirstr;
+
+ /* Parse the netgroup part of the string */
+ ret = __exp_line_ng_parse (line, &netgroups);
+ if (ret < 0) {
+ gf_log (GF_EXP, GF_LOG_ERROR, "Critical error: %s",
+ strerror (-ret));
+ /* Return values less than 0
+ * indicate critical failures (null parameters,
+ * failure to allocate memory, etc).
+ */
+ goto free_and_out;
+ }
+ if (ret != 0) {
+ if (ret == GF_EXP_PARSE_ITEM_FAILURE)
+ gf_log (GF_EXP, GF_LOG_WARNING,
+ "Error parsing netgroups for: %s", line);
+ /* Even though parsing failed for the netgroups we should let
+ * host parsing proceed.
+ */
+ netgroups_failed = _gf_true;
+ }
+
+ /* Parse the host part of the string */
+ ret = __exp_line_host_parse (line, &hosts);
+ if (ret < 0) {
+ gf_log (GF_EXP, GF_LOG_ERROR, "Critical error: %s",
+ strerror (-ret));
+ goto free_and_out;
+ }
+ if (ret != 0) {
+ if (ret == GF_EXP_PARSE_ITEM_FAILURE)
+ gf_log (GF_EXP, GF_LOG_WARNING,
+ "Error parsing hosts for: %s", line);
+ /* If netgroups parsing failed, AND
+ * host parsing failed, then theres something really
+ * wrong with this line, so we're just going to
+ * log it and fail out.
+ */
+ if (netgroups_failed)
+ goto free_and_out;
+ }
+
+ expdir->hosts = hosts;
+ expdir->netgroups = netgroups;
+ *dir = expdir;
+ goto out;
+
+free_and_out:
+ _export_dir_deinit (expdir);
+out:
+ return ret;
+}
+
+struct export_item *
+exp_dir_get_netgroup (const struct export_dir *expdir, const char *netgroup)
+{
+ struct export_item *lookup_res = NULL;
+ data_t *dict_res = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, expdir, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, netgroup, out);
+
+ if (!expdir->netgroups)
+ goto out;
+
+ dict_res = dict_get (expdir->netgroups, (char *)netgroup);
+ if (!dict_res) {
+ gf_log (GF_EXP, GF_LOG_DEBUG, "%s not found for %s",
+ netgroup, expdir->dir_name);
+ }
+
+ lookup_res = (struct export_item *)dict_res->data;
+out:
+ return lookup_res;
+}
+/**
+ * exp_dir_get_host -- Given a host string and an exports directory structure,
+ * find and return an struct export_item structure that
+ * represents the requested host.
+ *
+ * @expdir: Export directory to lookup from
+ * @host : Host string to lookup
+ *
+ * @return: success: Pointer to a export item structure
+ * failure: NULL
+ */
+struct export_item *
+exp_dir_get_host (const struct export_dir *expdir, const char *host)
+{
+ struct export_item *lookup_res = NULL;
+ data_t *dict_res = NULL;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, expdir, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, host, out);
+
+ if (!expdir->hosts)
+ goto out;
+
+ dict_res = dict_get (expdir->hosts, (char *)host);
+ if (!dict_res) {
+ gf_log (GF_EXP, GF_LOG_DEBUG, "%s not found for %s",
+ host, expdir->dir_name);
+
+ /* Check if wildcards are allowed for the host */
+ dict_res = dict_get (expdir->hosts, "*");
+ if (!dict_res) {
+ goto out;
+ }
+ }
+
+ lookup_res = (struct export_item *)dict_res->data;
+out:
+ return lookup_res;
+}
+
+
+/**
+ * exp_file_get_dir -- Return an export dir given a directory name
+ * Does a lookup from the dict in the file structure.
+ *
+ * @file : Exports file structure to lookup from
+ * @dir : Directory name to lookup
+ *
+ * @return : success: Pointer to an export directory structure
+ * failure: NULL
+ */
+struct export_dir *
+exp_file_get_dir (const struct exports_file *file, const char *dir)
+{
+ struct export_dir *lookup_res = NULL;
+ data_t *dict_res = NULL;
+ char *dirdup = NULL;
+ size_t dirlen = 0;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, file, out);
+ GF_VALIDATE_OR_GOTO (GF_EXP, dir, out);
+
+ dirlen = strlen (dir);
+ if (dirlen <= 0)
+ goto out;
+
+ dirdup = (char *)dir; /* Point at the directory */
+
+ /* If directories don't contain a leading slash */
+ if (*dir != '/') {
+ dirdup = alloca (dirlen + 2); /* Leading slash & null byte */
+ snprintf (dirdup, dirlen + 2, "/%s", dir);
+ }
+
+ dict_res = dict_get (file->exports_dict, dirdup);
+ if (!dict_res) {
+ gf_log (GF_EXP, GF_LOG_DEBUG, "%s not found in %s", dirdup,
+ file->filename);
+ goto out;
+ }
+
+ lookup_res = (struct export_dir *)dict_res->data;
+out:
+ return lookup_res;
+}
+
+/**
+ * exp_file_parse -- Parse an exports file into a structure
+ * that can be looked up through simple
+ * function calls.
+ *
+ * @filepath: Path to the exports file
+ * @ms : Current mount state (useful to match with gluster vol files)
+ *
+ * @return : success: 0
+ * failure: -1 on parsing failure, -EINVAL on bad arguments,
+ * -ENOMEM on allocation failures.
+ *
+ * The caller is responsible for freeing memory allocated by this function.
+ * The caller should free this memory using the exp_file_deinit () function.
+ * Calling GF_FREE ( ) on the pointer will NOT free all the allocated memory.
+ *
+ * Externally usable.
+ */
+int
+exp_file_parse (const char *filepath, struct exports_file **expfile,
+ struct mount3_state *ms)
+{
+ FILE *fp = NULL;
+ struct exports_file *file = NULL;
+ size_t len = 0;
+ int ret = -EINVAL;
+ unsigned long line_number = 0;
+ char *line = NULL;
+ struct export_dir *expdir = NULL;
+
+ /* Sets whether we we should parse the entire file or just that which
+ * is present in the mount state */
+ gf_boolean_t parse_complete_file = _gf_false;
+
+ GF_VALIDATE_OR_GOTO (GF_EXP, expfile, parse_done);
+
+ if (!ms) {
+ /* If mount state is null that means that we
+ * should go through and parse the whole file
+ * since we don't have anything to compare against.
+ */
+ parse_complete_file = _gf_true;
+ }
+
+ fp = fopen (filepath, "r");
+ if (!fp) {
+ ret = -errno;
+ goto parse_done;
+ }
+
+ ret = _exp_init_parsers ();
+ if (ret < 0)
+ goto parse_done;
+
+ /* Process the file line by line, with each line being parsed into
+ * an struct export_dir struct. If 'parse_complete_file' is set to TRUE
+ * then
+ */
+ while (getline (&line, &len, fp) != -1) {
+ line_number++; /* Keeping track of line number allows us to
+ * to log which line numbers were wrong
+ */
+ strtok (line, "\n"); /* removes the newline character from
+ * the line
+ */
+
+ /* Parse the line from the file into an struct export_dir
+ * structure. The process is as follows:
+ * Given a line like :
+ * "/vol @test(sec=sys,rw,anonuid=0) 10.35.11.31(sec=sys,rw)"
+ *
+ * This function will allocate an export dir and set its name
+ * to '/vol', using the function _exp_line_dir_parse ().
+ *
+ * Then it will extract the netgroups from the line, in this
+ * case it would be '@test(sec=sys,rw,anonuid=0)', and set the
+ * item structure's name to '@test'.
+ * It will also extract the options from that string and parse
+ * them into an struct export_options which will be pointed
+ * to by the item structure. This will be put into a dict
+ * which will be pointed to by the export directory structure.
+ *
+ * The same process happens above for the host string
+ * '10.35.11.32(sec=sys,rw)'
+ */
+ ret = _exp_line_parse (line, &expdir, parse_complete_file, ms);
+ if (ret == -ENOMEM) {
+ /* If we get memory allocation errors, we really should
+ * not continue parsing, so just free the allocated
+ * memory and exit.
+ */
+ goto free_and_done;
+ }
+
+ if (ret < 0) {
+ gf_log (GF_EXP, GF_LOG_ERROR,
+ "Failed to parse line #%lu", line_number);
+ continue; /* Skip entering this line and continue */
+ }
+
+ if (ret == GF_EXP_PARSE_LINE_IGNORING) {
+ /* This just means the line was empty or started with a
+ * '#' or a ' ' and we are ignoring it.
+ */
+ gf_log (GF_EXP, GF_LOG_DEBUG,
+ "Ignoring line #%lu because it started "
+ "with a %c", line_number, *line);
+ continue;
+ }
+
+ if (!file) {
+ file = _exports_file_init ();
+ GF_CHECK_ALLOC_AND_LOG (GF_EXP, file, ret,
+ "Allocation error while "
+ "allocating file struct",
+ parse_done);
+
+ file->filename = gf_strdup (filepath);
+ GF_CHECK_ALLOC_AND_LOG (GF_EXP, file, ret,
+ "Allocation error while "
+ "duping filepath",
+ free_and_done);
+ }
+
+ /* If the parsing is successful store the export directory
+ * in the file structure.
+ */
+ _exp_file_insert (file, expdir);
+ }
+
+ /* line got allocated through getline(), don't use GF_FREE() for it */
+ free (line);
+
+ *expfile = file;
+ goto parse_done;
+
+free_and_done:
+ exp_file_deinit (file);
+
+parse_done:
+ if (fp)
+ fclose (fp);
+ _exp_deinit_parsers ();
+ return ret;
+}
diff --git a/xlators/nfs/server/src/exports.h b/xlators/nfs/server/src/exports.h
new file mode 100644
index 00000000000..51a3cd668a4
--- /dev/null
+++ b/xlators/nfs/server/src/exports.h
@@ -0,0 +1,92 @@
+/*
+ Copyright 2014-present Facebook. All Rights Reserved
+
+ This file is part of GlusterFS.
+
+ Author :
+ Shreyas Siravara <shreyas.siravara@gmail.com>
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _EXPORTS_H_
+#define _EXPORTS_H_
+
+#include "nfs-mem-types.h"
+#include "dict.h"
+#include "nfs.h"
+
+#define GF_EXP GF_NFS"-exports"
+
+#define NETGROUP_REGEX_PATTERN "(@([a-zA-Z0-9\\(=, .])+)())"
+#define HOSTNAME_REGEX_PATTERN "[[:space:]]([a-zA-Z0-9.\\(=,*/)]+)"
+#define OPTIONS_REGEX_PATTERN "([a-zA-Z0-9=\\.]+)"
+
+#define NETGROUP_MAX_LEN 128
+#define FQDN_MAX_LEN 256
+
+#define SEC_OPTION_MAX 10
+#define UID_MAX_LEN 6
+
+#define DIR_MAX_LEN 1024
+
+/* The following 2 definitions are in mount3.h
+ * but we don't want to include it because mount3.h
+ * depends on structs in this file so we get a cross
+ * dependency.
+ */
+struct mount3_state;
+
+extern struct mnt3_export *
+mnt3_mntpath_to_export (struct mount3_state *ms, const char *dirpath,
+ gf_boolean_t export_parsing_match);
+
+struct export_options {
+ gf_boolean_t rw; /* Read-write option */
+ gf_boolean_t nosuid; /* nosuid option */
+ gf_boolean_t root; /* root option */
+ char *anon_uid; /* anonuid option */
+ char *sec_type; /* X, for sec=X */
+};
+
+struct export_item {
+ char *name; /* Name of the export item */
+ struct export_options *opts; /* NFS Options */
+};
+
+struct export_dir {
+ char *dir_name; /* Directory */
+ dict_t *netgroups; /* Dict of netgroups */
+ dict_t *hosts; /* Dict of hosts */
+};
+
+struct exports_file {
+ char *filename; /* Filename */
+ dict_t *exports_dict; /* Dict of export_dir_t */
+ dict_t *exports_map; /* Map of SuperFastHash(<export>) -> expdir */
+};
+
+void
+exp_file_deinit (struct exports_file *expfile);
+
+int
+exp_file_parse (const char *filepath, struct exports_file **expfile,
+ struct mount3_state *ms);
+
+struct export_dir *
+exp_file_get_dir (const struct exports_file *file, const char *dir);
+
+struct export_item *
+exp_dir_get_host (const struct export_dir *expdir, const char *host);
+
+struct export_item *
+exp_dir_get_netgroup (const struct export_dir *expdir, const char *netgroup);
+
+struct export_dir *
+exp_file_dir_from_uuid (const struct exports_file *file,
+ const uuid_t export_uuid);
+
+#endif /* _EXPORTS_H_ */
diff --git a/xlators/nfs/server/src/nfs-mem-types.h b/xlators/nfs/server/src/nfs-mem-types.h
index d9e2c9904c9..33adcf5e292 100644
--- a/xlators/nfs/server/src/nfs-mem-types.h
+++ b/xlators/nfs/server/src/nfs-mem-types.h
@@ -47,6 +47,7 @@ enum gf_nfs_mem_types_ {
gf_nfs_mt_inode_ctx,
gf_nfs_mt_auth_spec,
gf_nfs_mt_netgroups,
+ gf_nfs_mt_exports,
gf_nfs_mt_arr,
gf_nfs_mt_end
};
diff --git a/xlators/nfs/server/src/nfs.h b/xlators/nfs/server/src/nfs.h
index fc745fbbdc4..4c51d11d49c 100644
--- a/xlators/nfs/server/src/nfs.h
+++ b/xlators/nfs/server/src/nfs.h
@@ -38,6 +38,9 @@
#define GF_NFS_DVM_ON 1
#define GF_NFS_DVM_OFF 0
+/* Disable using the exports file by default */
+#define GF_NFS_DEFAULT_EXPORT_AUTH 0
+
/* This corresponds to the max 16 number of group IDs that are sent through an
* RPC request. Since NFS is the only one going to set this, we can be safe
* in keeping this size hardcoded.