diff options
Diffstat (limited to 'lib/libshare/os/freebsd/nfs.c')
| -rw-r--r-- | lib/libshare/os/freebsd/nfs.c | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/lib/libshare/os/freebsd/nfs.c b/lib/libshare/os/freebsd/nfs.c deleted file mode 100644 index 969194f2881a..000000000000 --- a/lib/libshare/os/freebsd/nfs.c +++ /dev/null @@ -1,244 +0,0 @@ -// SPDX-License-Identifier: BSD-2-Clause -/* - * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * Copyright (c) 2020, 2022 by Delphix. All rights reserved. - */ - -#include <sys/param.h> -#include <sys/vfs.h> - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <libutil.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> -#include <libintl.h> - -#include <libshare.h> -#include "libshare_impl.h" -#include "nfs.h" - -#define _PATH_MOUNTDPID "/var/run/mountd.pid" -#define ZFS_EXPORTS_FILE "/etc/zfs/exports" -#define ZFS_EXPORTS_LOCK ZFS_EXPORTS_FILE".lock" - -/* - * This function translates options to a format acceptable by exports(5), eg. - * - * -ro -network=192.168.0.0 -mask=255.255.255.0 -maproot=0 \ - * zfs.freebsd.org 69.147.83.54 - * - * Accepted input formats: - * - * ro,network=192.168.0.0,mask=255.255.255.0,maproot=0,zfs.freebsd.org - * ro network=192.168.0.0 mask=255.255.255.0 maproot=0 zfs.freebsd.org - * -ro,-network=192.168.0.0,-mask=255.255.255.0,-maproot=0,zfs.freebsd.org - * -ro -network=192.168.0.0 -mask=255.255.255.0 -maproot=0 \ - * zfs.freebsd.org - * - * Recognized keywords: - * - * ro, maproot, mapall, mask, network, sec, alldirs, public, webnfs, - * index, quiet - */ -static int -translate_opts(char *oldopts, FILE *out) -{ - static const char *const known_opts[] = { "ro", "maproot", "mapall", - "mask", "network", "sec", "alldirs", "public", "webnfs", "index", - "quiet" }; - char *newopts, *o, *s = NULL; - unsigned int i; - size_t len, newopts_len; - int ret; - - /* - * Calculate the length needed for the worst case of a single - * character option: - * - Add one to strlen(oldopts) so that the trailing nul is counted - * as a separator. - * - Multiply by 3/2 since the single character option plus separator - * is expanded to 3 characters. - * - Add one for the trailing nul. Needed for a single repetition of - * the single character option and certain other cases. - */ - newopts_len = (strlen(oldopts) + 1) * 3 / 2 + 1; - newopts = malloc(newopts_len); - if (newopts == NULL) - return (EOF); - newopts[0] = '\0'; - s = oldopts; - while ((o = strsep(&s, ", ")) != NULL) { - if (o[0] == '-') - o++; - if (o[0] == '\0') - continue; - for (i = 0; i < ARRAY_SIZE(known_opts); ++i) { - len = strlen(known_opts[i]); - if (strncmp(known_opts[i], o, len) == 0 && - (o[len] == '\0' || o[len] == '=')) { - strlcat(newopts, "-", newopts_len); - break; - } - } - strlcat(newopts, o, newopts_len); - strlcat(newopts, " ", newopts_len); - } - ret = fputs(newopts, out); - free(newopts); - return (ret); -} - -static int -nfs_enable_share_impl(sa_share_impl_t impl_share, FILE *tmpfile) -{ - const char *shareopts = impl_share->sa_shareopts; - if (strcmp(shareopts, "on") == 0) - shareopts = ""; - - boolean_t need_free, fnd_semi; - char *mp, *lineopts, *exportopts, *s; - size_t whitelen; - int rc = nfs_escape_mountpoint(impl_share->sa_mountpoint, &mp, - &need_free); - if (rc != SA_OK) - return (rc); - - lineopts = strdup(shareopts); - if (lineopts == NULL) - return (SA_SYSTEM_ERR); - s = lineopts; - fnd_semi = B_FALSE; - while ((exportopts = strsep(&s, ";")) != NULL) { - if (s != NULL) - fnd_semi = B_TRUE; - /* Ignore only whitespace between ';' separated option sets. */ - if (fnd_semi) { - whitelen = strspn(exportopts, "\t "); - if (exportopts[whitelen] == '\0') - continue; - } - if (fputs(mp, tmpfile) == EOF || - fputc('\t', tmpfile) == EOF || - translate_opts(exportopts, tmpfile) == EOF || - fputc('\n', tmpfile) == EOF) { - fprintf(stderr, "failed to write to temporary file\n"); - rc = SA_SYSTEM_ERR; - break; - } - } - free(lineopts); - - if (need_free) - free(mp); - return (rc); -} - -static int -nfs_enable_share(sa_share_impl_t impl_share) -{ - return (nfs_toggle_share( - ZFS_EXPORTS_LOCK, ZFS_EXPORTS_FILE, NULL, impl_share, - nfs_enable_share_impl)); -} - -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) -{ - return (nfs_toggle_share( - ZFS_EXPORTS_LOCK, ZFS_EXPORTS_FILE, NULL, impl_share, - nfs_disable_share_impl)); -} - -static boolean_t -nfs_is_shared(sa_share_impl_t impl_share) -{ - return (nfs_is_shared_impl(ZFS_EXPORTS_FILE, impl_share)); -} - -static int -nfs_validate_shareopts(const char *shareopts) -{ - if (strlen(shareopts) == 0) - return (SA_SYNTAX_ERR); - return (SA_OK); -} - -/* - * Commit the shares by restarting mountd. - */ -static int -nfs_commit_shares(void) -{ - struct pidfh *pfh; - pid_t mountdpid; - -start: - pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &mountdpid); - if (pfh != NULL) { - /* mountd(8) is not running. */ - pidfile_remove(pfh); - return (SA_OK); - } - if (errno != EEXIST) { - /* Cannot open pidfile for some reason. */ - return (SA_SYSTEM_ERR); - } - if (mountdpid == -1) { - /* mountd(8) exists, but didn't write the PID yet */ - usleep(500); - goto start; - } - /* We have mountd(8) PID in mountdpid variable. */ - kill(mountdpid, SIGHUP); - return (SA_OK); -} - -static void -nfs_truncate_shares(void) -{ - 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, -}; |