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dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53426 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVwm0-0002PW-0B for qemu-devel@archiver.kernel.org; Fri, 23 Oct 2020 09:06:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49744) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVwlC-0001uv-Tb for qemu-devel@nongnu.org; Fri, 23 Oct 2020 09:05:34 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:38801) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kVwl7-0007Of-T0 for qemu-devel@nongnu.org; Fri, 23 Oct 2020 09:05:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603458323; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=nXafgIPS1Y+JsJNM/Syv5JMehVtcHmwZhGMzk6zzFHk=; b=ZEBgYYXu4/SyNvTBIk89ln1qKIWsRNfuINKEahkq+/gCg3SCQP7kk8zzsQt1mQr1KKtJDf zhbyA1NqHaIQk/PSa1Ow7J5zmb9BB2DnNliQtt4ia1AddS9h5gT4TlHYsgRp6xawfO89vl +Fx4YbeKQf8yGDJ6P5Rd64yrJEAx8vs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-276-S_-8islDN7uozS9ni-5Vnw-1; Fri, 23 Oct 2020 09:05:22 -0400 X-MC-Unique: S_-8islDN7uozS9ni-5Vnw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 031A41087D67 for ; Fri, 23 Oct 2020 13:05:21 +0000 (UTC) Received: from work-vm (ovpn-113-212.ams2.redhat.com [10.36.113.212]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8C3695C1CF; Fri, 23 Oct 2020 13:05:07 +0000 (UTC) Date: Fri, 23 Oct 2020 14:05:04 +0100 From: "Dr. David Alan Gilbert" To: Vivek Goyal Subject: Re: [PATCH v3 5/5] tools/virtiofsd: xattr name mappings: Simple 'map' Message-ID: <20201023130504.GD3038@work-vm> References: <20201014180209.49299-1-dgilbert@redhat.com> <20201014180209.49299-6-dgilbert@redhat.com> <20201022134206.GA512900@redhat.com> MIME-Version: 1.0 In-Reply-To: <20201022134206.GA512900@redhat.com> User-Agent: Mutt/1.14.6 (2020-07-11) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/23 02:46:25 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dinechin@redhat.com, virtio-fs@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Vivek Goyal (vgoyal@redhat.com) wrote: > On Wed, Oct 14, 2020 at 07:02:09PM +0100, Dr. David Alan Gilbert (git) wrote: > > From: "Dr. David Alan Gilbert" > > > > The mapping rule system implemented in the last few patches is > > extremely flexible, but not easy to use. Add a simple > > 'map' type as a sprinkling of sugar to make it easy. > > > > e.g. > > > > -o xattrmap=":map::user.virtiofs.:" > > > > would be sufficient to prefix all xattr's > > or > > > > -o xattrmap=":map:trusted.:user.virtiofs.:" > > > > would just prefix 'trusted.' xattr's and leave > > everything else alone. > > Will it block "user.virtiofs.trusted." from client? As we discussed > that either we need to block it or we need to prefix it with another > user.virtiofs. I mean this rule alone is problematic and needs > to be coupled with more rules. It blocked user.virtiofs. more generically: + /* 2nd: Hide non-prefixed but matching entries on the host */ + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_SERVER; + tmp_entry.key = g_strdup(""); /* Not used */ + tmp_entry.prepend = g_strdup(key); + map = add_xattrmap_entry(map, nentries, &tmp_entry); i.e. hides 'trusted.' + /* 3rd: Stop the client accessing prefixed attributes directly */ + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_CLIENT; + tmp_entry.key = g_strdup(prefix); + tmp_entry.prepend = g_strdup(""); /* Not used */ + map = add_xattrmap_entry(map, nentries, &tmp_entry); i.e. blocks client from 'user.virtiofs.' Note, that is a problem for nesting, since having that at L1 means it stops L2 from settings user.virtiofs.trusted.something (which it wants to become user.virtiofs.user.virtiofs.trusted.something). Using :map::user.virtiofs.: works nicely for nesting (I've just tried it), since that nests everything. > I am assuming one can specify multiple xattrmap on single line. So > one can also say. > > -o xattrmap=":map:trusted.:user.virtiofs.:" -o xattrmap=":map:user.virtiofs.:user.virtiofs." No, the existing core option parser we're using overrides on subsequent entries; so that would ignore the first -o xattrmap= Dave > > Thanks > Vivek > > > > > Signed-off-by: Dr. David Alan Gilbert > > --- > > docs/tools/virtiofsd.rst | 18 ++++++ > > tools/virtiofsd/passthrough_ll.c | 108 ++++++++++++++++++++++++++++++- > > 2 files changed, 125 insertions(+), 1 deletion(-) > > > > diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst > > index 5cb64612ed..e388ef253e 100644 > > --- a/docs/tools/virtiofsd.rst > > +++ b/docs/tools/virtiofsd.rst > > @@ -127,6 +127,7 @@ Each rule consists of a number of fields separated with a separator that is the > > first non-white space character in the rule. This separator must then be used > > for the whole rule. > > White space may be added before and after each rule. > > + > > Using ':' as the separator a rule is of the form: > > > > ``:type:scope:key:prepend:`` > > @@ -162,6 +163,13 @@ on the server, and used as a new prefix. It may be empty > > in which case a 'server' rule will always match on all names from > > the server. > > > > +A simpler 'map' type provides a shorter syntax for the common case: > > + > > +``:map:key:prepend:`` > > + > > +The 'map' type adds a number of separate rules to add **prepend** as a prefix > > +to the matched **key** (or all attributes if **key** is empty). > > +There may be at most one 'map' rule and it must be the last rule in the set. > > > > xattr-mapping Examples > > ---------------------- > > @@ -178,6 +186,11 @@ the first rule prefixes and strips 'user.virtiofs.', > > the second rule hides any non-prefixed attributes that > > the host set. > > > > +This is equivalent to the 'map' rule: > > + > > +:: > > +-o xattrmap=":map::user.virtiofs.:" > > + > > 2) Prefix 'trusted.' attributes, allow others through > > > > :: > > @@ -200,6 +213,11 @@ the 'user.viritofs.' path directly. > > Finally, the fourth rule lets all remaining attributes > > through. > > > > +This is equivalent to the 'map' rule: > > + > > +:: > > +-o xattrmap="/map/trusted./user.virtiofs./" > > + > > 3) Hide 'security.' attributes, and allow everything else > > > > :: > > diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c > > index 8406a2ae86..a1b3364ba3 100644 > > --- a/tools/virtiofsd/passthrough_ll.c > > +++ b/tools/virtiofsd/passthrough_ll.c > > @@ -2074,6 +2074,106 @@ static void free_xattrmap(XattrMapEntry *map) > > g_free(map); > > } > > > > +/* > > + * Handle the 'map' type, which is sugar for a set of commands > > + * for the common case of prefixing a subset or everything, > > + * and allowing anything not prefixed through. > > + * It must be the last entry in the stream, although there > > + * can be other entries before it. > > + * The form is: > > + * :map:key:prefix: > > + * > > + * key maybe empty in which case all entries are prefixed. > > + */ > > +static XattrMapEntry *parse_xattrmap_map(const char *rule, > > + XattrMapEntry *map, > > + size_t *nentries) > > +{ > > + char sep = *rule++; > > + const char *tmp; > > + char *key; > > + char *prefix; > > + XattrMapEntry tmp_entry; > > + > > + /* At start of 'key' field */ > > + tmp = strchr(rule, sep); > > + if (!tmp) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Missing '%c' at end of key field in map rule\n", > > + __func__, sep); > > + exit(1); > > + } > > + > > + key = g_strndup(rule, tmp - rule); > > + rule = tmp + 1; > > + > > + /* At start of prefix field */ > > + tmp = strchr(rule, sep); > > + if (!tmp) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Missing '%c' at end of prefix field in map rule\n", > > + __func__, sep); > > + exit(1); > > + } > > + > > + prefix = g_strndup(rule, tmp - rule); > > + rule = tmp + 1; > > + > > + /* > > + * This should be the end of the string, we don't allow > > + * any more commands after 'map'. > > + */ > > + if (*rule) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Expecting end of command after map, found '%c'\n", > > + __func__, *rule); > > + exit(1); > > + } > > + > > + /* 1st: Prefix matches/everything */ > > + tmp_entry.flags = XATTR_MAP_FLAG_PREFIX | XATTR_MAP_FLAG_ALL; > > + tmp_entry.key = g_strdup(key); > > + tmp_entry.prepend = g_strdup(prefix); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + if (!*key) { > > + /* Prefix all case */ > > + > > + /* 2nd: Hide any non-prefixed entries on the host */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_ALL | > > + XATTR_MAP_FLAG_LAST; > > + tmp_entry.key = g_strdup(""); > > + tmp_entry.prepend = g_strdup(""); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + } else { > > + /* Prefix matching case */ > > + > > + /* 2nd: Hide non-prefixed but matching entries on the host */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_SERVER; > > + tmp_entry.key = g_strdup(""); /* Not used */ > > + tmp_entry.prepend = g_strdup(key); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + /* 3rd: Stop the client accessing prefixed attributes directly */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_CLIENT; > > + tmp_entry.key = g_strdup(prefix); > > + tmp_entry.prepend = g_strdup(""); /* Not used */ > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + /* 4th: Everything else is OK */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_OK | XATTR_MAP_FLAG_ALL | > > + XATTR_MAP_FLAG_LAST; > > + tmp_entry.key = g_strdup(""); > > + tmp_entry.prepend = g_strdup(""); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + } > > + > > + g_free(key); > > + g_free(prefix); > > + > > + return map; > > +} > > + > > static XattrMapEntry *parse_xattrmap(struct lo_data *lo) > > { > > XattrMapEntry *res = NULL; > > @@ -2102,10 +2202,16 @@ static XattrMapEntry *parse_xattrmap(struct lo_data *lo) > > tmp_entry.flags |= XATTR_MAP_FLAG_END_OK; > > } else if (strstart(map, "bad", &map)) { > > tmp_entry.flags |= XATTR_MAP_FLAG_END_BAD; > > + } else if (strstart(map, "map", &map)) { > > + /* > > + * map is sugar that adds a number of rules, and must be > > + * the last entry. > > + */ > > + return parse_xattrmap_map(map, res, &nentries); > > } else { > > fuse_log(FUSE_LOG_ERR, > > "%s: Unexpected type;" > > - "Expecting 'prefix', 'ok', or 'bad' in rule %zu\n", > > + "Expecting 'prefix', 'ok', 'bad' or 'map' in rule %zu\n", > > __func__, nentries); > > exit(1); > > } > > -- > > 2.28.0 > > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 23 Oct 2020 14:05:04 +0100 From: "Dr. David Alan Gilbert" Message-ID: <20201023130504.GD3038@work-vm> References: <20201014180209.49299-1-dgilbert@redhat.com> <20201014180209.49299-6-dgilbert@redhat.com> <20201022134206.GA512900@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201022134206.GA512900@redhat.com> Subject: Re: [Virtio-fs] [PATCH v3 5/5] tools/virtiofsd: xattr name mappings: Simple 'map' List-Id: Development discussions about virtio-fs List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Vivek Goyal Cc: dinechin@redhat.com, virtio-fs@redhat.com, qemu-devel@nongnu.org * Vivek Goyal (vgoyal@redhat.com) wrote: > On Wed, Oct 14, 2020 at 07:02:09PM +0100, Dr. David Alan Gilbert (git) wrote: > > From: "Dr. David Alan Gilbert" > > > > The mapping rule system implemented in the last few patches is > > extremely flexible, but not easy to use. Add a simple > > 'map' type as a sprinkling of sugar to make it easy. > > > > e.g. > > > > -o xattrmap=":map::user.virtiofs.:" > > > > would be sufficient to prefix all xattr's > > or > > > > -o xattrmap=":map:trusted.:user.virtiofs.:" > > > > would just prefix 'trusted.' xattr's and leave > > everything else alone. > > Will it block "user.virtiofs.trusted." from client? As we discussed > that either we need to block it or we need to prefix it with another > user.virtiofs. I mean this rule alone is problematic and needs > to be coupled with more rules. It blocked user.virtiofs. more generically: + /* 2nd: Hide non-prefixed but matching entries on the host */ + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_SERVER; + tmp_entry.key = g_strdup(""); /* Not used */ + tmp_entry.prepend = g_strdup(key); + map = add_xattrmap_entry(map, nentries, &tmp_entry); i.e. hides 'trusted.' + /* 3rd: Stop the client accessing prefixed attributes directly */ + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_CLIENT; + tmp_entry.key = g_strdup(prefix); + tmp_entry.prepend = g_strdup(""); /* Not used */ + map = add_xattrmap_entry(map, nentries, &tmp_entry); i.e. blocks client from 'user.virtiofs.' Note, that is a problem for nesting, since having that at L1 means it stops L2 from settings user.virtiofs.trusted.something (which it wants to become user.virtiofs.user.virtiofs.trusted.something). Using :map::user.virtiofs.: works nicely for nesting (I've just tried it), since that nests everything. > I am assuming one can specify multiple xattrmap on single line. So > one can also say. > > -o xattrmap=":map:trusted.:user.virtiofs.:" -o xattrmap=":map:user.virtiofs.:user.virtiofs." No, the existing core option parser we're using overrides on subsequent entries; so that would ignore the first -o xattrmap= Dave > > Thanks > Vivek > > > > > Signed-off-by: Dr. David Alan Gilbert > > --- > > docs/tools/virtiofsd.rst | 18 ++++++ > > tools/virtiofsd/passthrough_ll.c | 108 ++++++++++++++++++++++++++++++- > > 2 files changed, 125 insertions(+), 1 deletion(-) > > > > diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst > > index 5cb64612ed..e388ef253e 100644 > > --- a/docs/tools/virtiofsd.rst > > +++ b/docs/tools/virtiofsd.rst > > @@ -127,6 +127,7 @@ Each rule consists of a number of fields separated with a separator that is the > > first non-white space character in the rule. This separator must then be used > > for the whole rule. > > White space may be added before and after each rule. > > + > > Using ':' as the separator a rule is of the form: > > > > ``:type:scope:key:prepend:`` > > @@ -162,6 +163,13 @@ on the server, and used as a new prefix. It may be empty > > in which case a 'server' rule will always match on all names from > > the server. > > > > +A simpler 'map' type provides a shorter syntax for the common case: > > + > > +``:map:key:prepend:`` > > + > > +The 'map' type adds a number of separate rules to add **prepend** as a prefix > > +to the matched **key** (or all attributes if **key** is empty). > > +There may be at most one 'map' rule and it must be the last rule in the set. > > > > xattr-mapping Examples > > ---------------------- > > @@ -178,6 +186,11 @@ the first rule prefixes and strips 'user.virtiofs.', > > the second rule hides any non-prefixed attributes that > > the host set. > > > > +This is equivalent to the 'map' rule: > > + > > +:: > > +-o xattrmap=":map::user.virtiofs.:" > > + > > 2) Prefix 'trusted.' attributes, allow others through > > > > :: > > @@ -200,6 +213,11 @@ the 'user.viritofs.' path directly. > > Finally, the fourth rule lets all remaining attributes > > through. > > > > +This is equivalent to the 'map' rule: > > + > > +:: > > +-o xattrmap="/map/trusted./user.virtiofs./" > > + > > 3) Hide 'security.' attributes, and allow everything else > > > > :: > > diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c > > index 8406a2ae86..a1b3364ba3 100644 > > --- a/tools/virtiofsd/passthrough_ll.c > > +++ b/tools/virtiofsd/passthrough_ll.c > > @@ -2074,6 +2074,106 @@ static void free_xattrmap(XattrMapEntry *map) > > g_free(map); > > } > > > > +/* > > + * Handle the 'map' type, which is sugar for a set of commands > > + * for the common case of prefixing a subset or everything, > > + * and allowing anything not prefixed through. > > + * It must be the last entry in the stream, although there > > + * can be other entries before it. > > + * The form is: > > + * :map:key:prefix: > > + * > > + * key maybe empty in which case all entries are prefixed. > > + */ > > +static XattrMapEntry *parse_xattrmap_map(const char *rule, > > + XattrMapEntry *map, > > + size_t *nentries) > > +{ > > + char sep = *rule++; > > + const char *tmp; > > + char *key; > > + char *prefix; > > + XattrMapEntry tmp_entry; > > + > > + /* At start of 'key' field */ > > + tmp = strchr(rule, sep); > > + if (!tmp) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Missing '%c' at end of key field in map rule\n", > > + __func__, sep); > > + exit(1); > > + } > > + > > + key = g_strndup(rule, tmp - rule); > > + rule = tmp + 1; > > + > > + /* At start of prefix field */ > > + tmp = strchr(rule, sep); > > + if (!tmp) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Missing '%c' at end of prefix field in map rule\n", > > + __func__, sep); > > + exit(1); > > + } > > + > > + prefix = g_strndup(rule, tmp - rule); > > + rule = tmp + 1; > > + > > + /* > > + * This should be the end of the string, we don't allow > > + * any more commands after 'map'. > > + */ > > + if (*rule) { > > + fuse_log(FUSE_LOG_ERR, > > + "%s: Expecting end of command after map, found '%c'\n", > > + __func__, *rule); > > + exit(1); > > + } > > + > > + /* 1st: Prefix matches/everything */ > > + tmp_entry.flags = XATTR_MAP_FLAG_PREFIX | XATTR_MAP_FLAG_ALL; > > + tmp_entry.key = g_strdup(key); > > + tmp_entry.prepend = g_strdup(prefix); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + if (!*key) { > > + /* Prefix all case */ > > + > > + /* 2nd: Hide any non-prefixed entries on the host */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_ALL | > > + XATTR_MAP_FLAG_LAST; > > + tmp_entry.key = g_strdup(""); > > + tmp_entry.prepend = g_strdup(""); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + } else { > > + /* Prefix matching case */ > > + > > + /* 2nd: Hide non-prefixed but matching entries on the host */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_SERVER; > > + tmp_entry.key = g_strdup(""); /* Not used */ > > + tmp_entry.prepend = g_strdup(key); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + /* 3rd: Stop the client accessing prefixed attributes directly */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_BAD | XATTR_MAP_FLAG_CLIENT; > > + tmp_entry.key = g_strdup(prefix); > > + tmp_entry.prepend = g_strdup(""); /* Not used */ > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + > > + /* 4th: Everything else is OK */ > > + tmp_entry.flags = XATTR_MAP_FLAG_END_OK | XATTR_MAP_FLAG_ALL | > > + XATTR_MAP_FLAG_LAST; > > + tmp_entry.key = g_strdup(""); > > + tmp_entry.prepend = g_strdup(""); > > + map = add_xattrmap_entry(map, nentries, &tmp_entry); > > + } > > + > > + g_free(key); > > + g_free(prefix); > > + > > + return map; > > +} > > + > > static XattrMapEntry *parse_xattrmap(struct lo_data *lo) > > { > > XattrMapEntry *res = NULL; > > @@ -2102,10 +2202,16 @@ static XattrMapEntry *parse_xattrmap(struct lo_data *lo) > > tmp_entry.flags |= XATTR_MAP_FLAG_END_OK; > > } else if (strstart(map, "bad", &map)) { > > tmp_entry.flags |= XATTR_MAP_FLAG_END_BAD; > > + } else if (strstart(map, "map", &map)) { > > + /* > > + * map is sugar that adds a number of rules, and must be > > + * the last entry. > > + */ > > + return parse_xattrmap_map(map, res, &nentries); > > } else { > > fuse_log(FUSE_LOG_ERR, > > "%s: Unexpected type;" > > - "Expecting 'prefix', 'ok', or 'bad' in rule %zu\n", > > + "Expecting 'prefix', 'ok', 'bad' or 'map' in rule %zu\n", > > __func__, nentries); > > exit(1); > > } > > -- > > 2.28.0 > > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK