1 files changed, 0 insertions, 587 deletions

diff --git a/lib/libshare/os/linux/nfs.c b/lib/libshare/os/linux/nfs.c
deleted file mode 100644
index 6a9bb3788523..000000000000
--- a/lib/libshare/os/linux/nfs.c
+++ /dev/null
@@ -1,587 +0,0 @@
-// SPDX-License-Identifier: CDDL-1.0
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or https://opensource.org/licenses/CDDL-1.0.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-
-/*
- * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2011 Gunnar Beutner
- * Copyright (c) 2012 Cyril Plisko. All rights reserved.
- * Copyright (c) 2019, 2022 by Delphix. All rights reserved.
- */
-
-#include <dirent.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <libzfs.h>
-#include <libshare.h>
-#include "libshare_impl.h"
-#include "nfs.h"
-
-#define	ZFS_EXPORTS_DIR		"/etc/exports.d"
-#define	ZFS_EXPORTS_FILE	ZFS_EXPORTS_DIR"/zfs.exports"
-#define	ZFS_EXPORTS_LOCK	ZFS_EXPORTS_FILE".lock"
-
-
-static boolean_t nfs_available(void);
-static boolean_t exports_available(void);
-
-typedef int (*nfs_shareopt_callback_t)(const char *opt, const char *value,
-    void *cookie);
-
-typedef int (*nfs_host_callback_t)(FILE *tmpfile, const char *sharepath,
-    const char *host, const char *security, const char *access, void *cookie);
-
-/*
- * Invokes the specified callback function for each Solaris share option
- * listed in the specified string.
- */
-static int
-foreach_nfs_shareopt(const char *shareopts,
-    nfs_shareopt_callback_t callback, void *cookie)
-{
-	char *shareopts_dup, *opt, *cur, *value;
-	int was_nul, error;
-
-	if (shareopts == NULL)
-		return (SA_OK);
-
-	if (strcmp(shareopts, "on") == 0)
-		shareopts = "rw,crossmnt";
-
-	shareopts_dup = strdup(shareopts);
-
-
-	if (shareopts_dup == NULL)
-		return (SA_NO_MEMORY);
-
-	opt = shareopts_dup;
-	was_nul = 0;
-
-	while (1) {
-		cur = opt;
-
-		while (*cur != ',' && *cur != '\0')
-			cur++;
-
-		if (*cur == '\0')
-			was_nul = 1;
-
-		*cur = '\0';
-
-		if (cur > opt) {
-			value = strchr(opt, '=');
-
-			if (value != NULL) {
-				*value = '\0';
-				value++;
-			}
-
-			error = callback(opt, value, cookie);
-
-			if (error != SA_OK) {
-				free(shareopts_dup);
-				return (error);
-			}
-		}
-
-		opt = cur + 1;
-
-		if (was_nul)
-			break;
-	}
-
-	free(shareopts_dup);
-
-	return (SA_OK);
-}
-
-typedef struct nfs_host_cookie_s {
-	nfs_host_callback_t callback;
-	const char *sharepath;
-	void *cookie;
-	FILE *tmpfile;
-	const char *security;
-} nfs_host_cookie_t;
-
-/*
- * Helper function for foreach_nfs_host. This function checks whether the
- * current share option is a host specification and invokes a callback
- * function with information about the host.
- */
-static int
-foreach_nfs_host_cb(const char *opt, const char *value, void *pcookie)
-{
-	int error;
-	const char *access;
-	char *host_dup, *host, *next, *v6Literal;
-	nfs_host_cookie_t *udata = (nfs_host_cookie_t *)pcookie;
-	int cidr_len;
-
-#ifdef DEBUG
-	fprintf(stderr, "foreach_nfs_host_cb: key=%s, value=%s\n", opt, value);
-#endif
-
-	if (strcmp(opt, "sec") == 0)
-		udata->security = value;
-
-	if (strcmp(opt, "rw") == 0 || strcmp(opt, "ro") == 0) {
-		if (value == NULL)
-			value = "*";
-
-		access = opt;
-
-		host_dup = strdup(value);
-
-		if (host_dup == NULL)
-			return (SA_NO_MEMORY);
-
-		host = host_dup;
-
-		do {
-			if (*host == '[') {
-				host++;
-				v6Literal = strchr(host, ']');
-				if (v6Literal == NULL) {
-					free(host_dup);
-					return (SA_SYNTAX_ERR);
-				}
-				if (v6Literal[1] == '\0') {
-					*v6Literal = '\0';
-					next = NULL;
-				} else if (v6Literal[1] == '/') {
-					next = strchr(v6Literal + 2, ':');
-					if (next == NULL) {
-						cidr_len =
-						    strlen(v6Literal + 1);
-						memmove(v6Literal,
-						    v6Literal + 1,
-						    cidr_len);
-						v6Literal[cidr_len] = '\0';
-					} else {
-						cidr_len = next - v6Literal - 1;
-						memmove(v6Literal,
-						    v6Literal + 1,
-						    cidr_len);
-						v6Literal[cidr_len] = '\0';
-						next++;
-					}
-				} else if (v6Literal[1] == ':') {
-					*v6Literal = '\0';
-					next = v6Literal + 2;
-				} else {
-					free(host_dup);
-					return (SA_SYNTAX_ERR);
-				}
-			} else {
-				next = strchr(host, ':');
-				if (next != NULL) {
-					*next = '\0';
-					next++;
-				}
-			}
-
-			error = udata->callback(udata->tmpfile,
-			    udata->sharepath, host, udata->security,
-			    access, udata->cookie);
-
-			if (error != SA_OK) {
-				free(host_dup);
-
-				return (error);
-			}
-
-			host = next;
-		} while (host != NULL);
-
-		free(host_dup);
-	}
-
-	return (SA_OK);
-}
-
-/*
- * Invokes a callback function for all NFS hosts that are set for a share.
- */
-static int
-foreach_nfs_host(sa_share_impl_t impl_share, FILE *tmpfile,
-    nfs_host_callback_t callback, void *cookie)
-{
-	nfs_host_cookie_t udata;
-
-	udata.callback = callback;
-	udata.sharepath = impl_share->sa_mountpoint;
-	udata.cookie = cookie;
-	udata.tmpfile = tmpfile;
-	udata.security = "sys";
-
-	return (foreach_nfs_shareopt(impl_share->sa_shareopts,
-	    foreach_nfs_host_cb, &udata));
-}
-
-/*
- * Converts a Solaris NFS host specification to its Linux equivalent.
- */
-static const char *
-get_linux_hostspec(const char *solaris_hostspec)
-{
-	/*
-	 * For now we just support CIDR masks (e.g. @192.168.0.0/16) and host
-	 * wildcards (e.g. *.example.org).
-	 */
-	if (solaris_hostspec[0] == '@') {
-		/*
-		 * Solaris host specifier, e.g. @192.168.0.0/16; we just need
-		 * to skip the @ in this case
-		 */
-		return (solaris_hostspec + 1);
-	} else {
-		return (solaris_hostspec);
-	}
-}
-
-/*
- * Adds a Linux share option to an array of NFS options.
- */
-static int
-add_linux_shareopt(char **plinux_opts, const char *key, const char *value)
-{
-	size_t len = 0;
-	char *new_linux_opts;
-
-	if (*plinux_opts != NULL)
-		len = strlen(*plinux_opts);
-
-	new_linux_opts = realloc(*plinux_opts, len + 1 + strlen(key) +
-	    (value ? 1 + strlen(value) : 0) + 1);
-
-	if (new_linux_opts == NULL)
-		return (SA_NO_MEMORY);
-
-	new_linux_opts[len] = '\0';
-
-	if (len > 0)
-		strcat(new_linux_opts, ",");
-
-	strcat(new_linux_opts, key);
-
-	if (value != NULL) {
-		strcat(new_linux_opts, "=");
-		strcat(new_linux_opts, value);
-	}
-
-	*plinux_opts = new_linux_opts;
-
-	return (SA_OK);
-}
-
-static int string_cmp(const void *lhs, const void *rhs) {
-	const char *const *l = lhs, *const *r = rhs;
-	return (strcmp(*l, *r));
-}
-
-/*
- * Validates and converts a single Solaris share option to its Linux
- * equivalent.
- */
-static int
-get_linux_shareopts_cb(const char *key, const char *value, void *cookie)
-{
-	/* This list must remain sorted, since we bsearch() it */
-	static const char *const valid_keys[] = { "all_squash", "anongid",
-	    "anonuid", "async", "auth_nlm", "crossmnt", "fsid", "fsuid", "hide",
-	    "insecure", "insecure_locks", "mountpoint", "mp", "no_acl",
-	    "no_all_squash", "no_auth_nlm", "no_root_squash",
-	    "no_subtree_check", "no_wdelay", "nohide", "refer", "replicas",
-	    "root_squash", "secure", "secure_locks", "subtree_check", "sync",
-	    "wdelay" };
-
-	char **plinux_opts = (char **)cookie;
-	char *host, *val_dup, *literal, *next;
-
-	if (strcmp(key, "sec") == 0)
-		return (SA_OK);
-
-	if (strcmp(key, "ro") == 0 || strcmp(key, "rw") == 0) {
-		if (value == NULL || strlen(value) == 0)
-			return (SA_OK);
-		val_dup = strdup(value);
-		host = val_dup;
-		if (host == NULL)
-			return (SA_NO_MEMORY);
-		do {
-			if (*host == '[') {
-				host++;
-				literal = strchr(host, ']');
-				if (literal == NULL) {
-					free(val_dup);
-					return (SA_SYNTAX_ERR);
-				}
-				if (literal[1] == '\0')
-					next = NULL;
-				else if (literal[1] == '/') {
-					next = strchr(literal + 2, ':');
-					if (next != NULL)
-						++next;
-				} else if (literal[1] == ':')
-					next = literal + 2;
-				else {
-					free(val_dup);
-					return (SA_SYNTAX_ERR);
-				}
-			} else {
-				next = strchr(host, ':');
-				if (next != NULL)
-					++next;
-			}
-			host = next;
-		} while (host != NULL);
-		free(val_dup);
-		return (SA_OK);
-	}
-
-	if (strcmp(key, "anon") == 0)
-		key = "anonuid";
-
-	if (strcmp(key, "root_mapping") == 0) {
-		(void) add_linux_shareopt(plinux_opts, "root_squash", NULL);
-		key = "anonuid";
-	}
-
-	if (strcmp(key, "nosub") == 0)
-		key = "subtree_check";
-
-	if (bsearch(&key, valid_keys, ARRAY_SIZE(valid_keys),
-	    sizeof (*valid_keys), string_cmp) == NULL)
-		return (SA_SYNTAX_ERR);
-
-	(void) add_linux_shareopt(plinux_opts, key, value);
-
-	return (SA_OK);
-}
-
-/*
- * Takes a string containing Solaris share options (e.g. "sync,no_acl") and
- * converts them to a NULL-terminated array of Linux NFS options.
- */
-static int
-get_linux_shareopts(const char *shareopts, char **plinux_opts)
-{
-	int error;
-
-	assert(plinux_opts != NULL);
-
-	*plinux_opts = NULL;
-
-	/* no_subtree_check - Default as of nfs-utils v1.1.0 */
-	(void) add_linux_shareopt(plinux_opts, "no_subtree_check", NULL);
-
-	/* mountpoint - Restrict exports to ZFS mountpoints */
-	(void) add_linux_shareopt(plinux_opts, "mountpoint", NULL);
-
-	error = foreach_nfs_shareopt(shareopts, get_linux_shareopts_cb,
-	    plinux_opts);
-
-	if (error != SA_OK) {
-		free(*plinux_opts);
-		*plinux_opts = NULL;
-	}
-
-	return (error);
-}
-
-/*
- * This function populates an entry into /etc/exports.d/zfs.exports.
- * This file is consumed by the linux nfs server so that zfs shares are
- * automatically exported upon boot or whenever the nfs server restarts.
- */
-static int
-nfs_add_entry(FILE *tmpfile, const char *sharepath,
-    const char *host, const char *security, const char *access_opts,
-    void *pcookie)
-{
-	const char *linux_opts = (const char *)pcookie;
-
-	if (linux_opts == NULL)
-		linux_opts = "";
-
-	boolean_t need_free;
-	char *mp;
-	int rc = nfs_escape_mountpoint(sharepath, &mp, &need_free);
-	if (rc != SA_OK)
-		return (rc);
-	if (fprintf(tmpfile, "%s %s(sec=%s,%s,%s)\n", mp,
-	    get_linux_hostspec(host), security, access_opts,
-	    linux_opts) < 0) {
-		fprintf(stderr, "failed to write to temporary file\n");
-		rc = SA_SYSTEM_ERR;
-	}
-
-	if (need_free)
-		free(mp);
-	return (rc);
-}
-
-/*
- * Enables NFS sharing for the specified share.
- */
-static int
-nfs_enable_share_impl(sa_share_impl_t impl_share, FILE *tmpfile)
-{
-	char *linux_opts = NULL;
-	int error = get_linux_shareopts(impl_share->sa_shareopts, &linux_opts);
-	if (error != SA_OK)
-		return (error);
-
-	error = foreach_nfs_host(impl_share, tmpfile, nfs_add_entry,
-	    linux_opts);
-	free(linux_opts);
-	return (error);
-}
-
-static int
-nfs_enable_share(sa_share_impl_t impl_share)
-{
-	if (!nfs_available())
-		return (SA_SYSTEM_ERR);
-
-	return (nfs_toggle_share(
-	    ZFS_EXPORTS_LOCK, ZFS_EXPORTS_FILE, ZFS_EXPORTS_DIR, impl_share,
-	    nfs_enable_share_impl));
-}
-
-/*
- * Disables NFS sharing for the specified share.
- */
-static int
-nfs_disable_share_impl(sa_share_impl_t impl_share, FILE *tmpfile)
-{
-	(void) impl_share, (void) tmpfile;
-	return (SA_OK);
-}
-
-static int
-nfs_disable_share(sa_share_impl_t impl_share)
-{
-	if (!nfs_available())
-		return (SA_OK);
-
-	return (nfs_toggle_share(
-	    ZFS_EXPORTS_LOCK, ZFS_EXPORTS_FILE, ZFS_EXPORTS_DIR, impl_share,
-	    nfs_disable_share_impl));
-}
-
-static boolean_t
-nfs_is_shared(sa_share_impl_t impl_share)
-{
-	if (!nfs_available())
-		return (SA_SYSTEM_ERR);
-
-	return (nfs_is_shared_impl(ZFS_EXPORTS_FILE, impl_share));
-}
-
-/*
- * Checks whether the specified NFS share options are syntactically correct.
- */
-static int
-nfs_validate_shareopts(const char *shareopts)
-{
-	char *linux_opts = NULL;
-
-	if (strlen(shareopts) == 0)
-		return (SA_SYNTAX_ERR);
-
-	int error = get_linux_shareopts(shareopts, &linux_opts);
-	if (error != SA_OK)
-		return (error);
-
-	free(linux_opts);
-	return (SA_OK);
-}
-
-static int
-nfs_commit_shares(void)
-{
-	if (!nfs_available())
-		return (SA_SYSTEM_ERR);
-
-	char *argv[] = {
-	    (char *)"/usr/sbin/exportfs",
-	    (char *)"-ra",
-	    NULL
-	};
-
-	return (libzfs_run_process(argv[0], argv, 0));
-}
-
-static void
-nfs_truncate_shares(void)
-{
-	if (!exports_available())
-		return;
-	nfs_reset_shares(ZFS_EXPORTS_LOCK, ZFS_EXPORTS_FILE);
-}
-
-const sa_fstype_t libshare_nfs_type = {
-	.enable_share = nfs_enable_share,
-	.disable_share = nfs_disable_share,
-	.is_shared = nfs_is_shared,
-
-	.validate_shareopts = nfs_validate_shareopts,
-	.commit_shares = nfs_commit_shares,
-	.truncate_shares = nfs_truncate_shares,
-};
-
-static boolean_t
-nfs_available(void)
-{
-	static int avail;
-
-	if (!avail) {
-		if (access("/usr/sbin/exportfs", F_OK) != 0)
-			avail = -1;
-		else
-			avail = 1;
-	}
-
-	return (avail == 1);
-}
-
-static boolean_t
-exports_available(void)
-{
-	static int avail;
-
-	if (!avail) {
-		if (access(ZFS_EXPORTS_DIR, F_OK) != 0)
-			avail = -1;
-		else
-			avail = 1;
-	}
-
-	return (avail == 1);
-}