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libshare: nfs: pass through ipv6 addresses in bracket notation 

Recognize when the host part of a sharenfs attribute is an ipv6
Literal and pass that through without modification.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Felix Dörre <felix@dogcraft.de>
Closes: #11171
Closes #11939
Closes: #1894
This commit is contained in:
felixdoerre 2021-10-20 19:40:00 +02:00 committed by Brian Behlendorf
parent ae75a78ba3
commit 9e41d5d05c
6 changed files with 126 additions and 8 deletions
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47
lib/libshare/os/linux/nfs.c
View File

@ -180,8 +180,9 @@ foreach_nfs_host_cb(const char *opt, const char *value, void *pcookie)
{
int error;
const char *access;
char *host_dup, *host, *next;
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);
@ -204,10 +205,46 @@ foreach_nfs_host_cb(const char *opt, const char *value, void *pcookie)
host = host_dup;
do {
next = strchr(host, ':');
if (next != NULL) {
*next = '\0';
next++;
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->filename,

2
man/man8/zfs.8
View File

@ -545,7 +545,7 @@ access for a set of IP addresses and to enable root access for system
on the
.Ar tank/home
file system:
.Dl # Nm zfs Cm set Sy sharenfs Ns = Ns ' Ns Ar rw Ns =@123.123.0.0/16,root= Ns Ar neo Ns ' tank/home
.Dl # Nm zfs Cm set Sy sharenfs Ns = Ns ' Ns Ar rw Ns =@123.123.0.0/16:[::1],root= Ns Ar neo Ns ' tank/home
.Pp
If you are using DNS for host name resolution,
specify the fully-qualified hostname.

2
tests/runfiles/linux.run
View File

@ -53,7 +53,7 @@ tags = ['functional', 'cli_root', 'zfs_mount']
[tests/functional/cli_root/zfs_share:Linux]
tests = ['zfs_share_005_pos', 'zfs_share_007_neg', 'zfs_share_009_neg',
'zfs_share_012_pos']
'zfs_share_012_pos', 'zfs_share_013_pos']
tags = ['functional', 'cli_root', 'zfs_share']
[tests/functional/cli_root/zfs_sysfs:Linux]

1
tests/zfs-tests/tests/functional/cli_root/zfs_share/Makefile.am
View File

@ -14,6 +14,7 @@ dist_pkgdata_SCRIPTS = \
zfs_share_010_neg.ksh \
zfs_share_011_pos.ksh \
zfs_share_012_pos.ksh \
zfs_share_013_pos.ksh \
zfs_share_concurrent_shares.ksh
dist_pkgdata_DATA = \

2
tests/zfs-tests/tests/functional/cli_root/zfs_share/zfs_share_007_neg.ksh
View File

@ -51,7 +51,7 @@ function cleanup {
set -A badopts \
"r0" "r0=machine1" "r0=machine1:machine2" \
"-g" "-b" "-c" "-d" "--invalid" \
"-g" "-b" "-c" "-d" "--invalid" "rw=[::1]a:[::2]" "rw=[::1" \
"$TESTPOOL" "$TESTPOOL/$TESTFS" "$TESTPOOL\$TESTCTR\$TESTFS1"
log_assert "Verify that invalid share parameters and options are caught."

80
tests/zfs-tests/tests/functional/cli_root/zfs_share/zfs_share_013_pos.ksh Executable file
View File

@ -0,0 +1,80 @@
#!/bin/ksh -p
#
# 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 http://www.opensolaris.org/os/licensing.
# 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) 2020, Felix Dörre
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# Verify that NFS share options including ipv6 literals are parsed and propagated correctly.
#
verify_runnable "global"
function cleanup
{
log_must zfs set sharenfs=off $TESTPOOL/$TESTFS
is_shared $TESTPOOL/$TESTFS && \
log_must unshare_fs $TESTPOOL/$TESTFS
}
log_onexit cleanup
cleanup
log_must zfs set sharenfs="rw=[::1]" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "::1(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[2::3]" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "2::3(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[::1]:[2::3]" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "::1(" <<< "$output" > /dev/null
log_must grep "2::3(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[::1]/64" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "::1/64(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[2::3]/128" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "2::3/128(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[::1]/32:[2::3]/128" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "::1/32(" <<< "$output" > /dev/null
log_must grep "2::3/128(" <<< "$output" > /dev/null
log_must zfs set sharenfs="rw=[::1]:[2::3]/64:[2a01:1234:1234:1234:aa34:234:1234:1234]:1.2.3.4/24" $TESTPOOL/$TESTFS
output=$(showshares_nfs 2>&1)
log_must grep "::1(" <<< "$output" > /dev/null
log_must grep "2::3/64(" <<< "$output" > /dev/null
log_must grep "2a01:1234:1234:1234:aa34:234:1234:1234(" <<< "$output" > /dev/null
log_must grep "1\\.2\\.3\\.4/24(" <<< "$output" > /dev/null
log_pass "NFS share ip address propagated correctly."