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Fri, 01 Sep 2023 18:03:16 +0000 From: mwilck@suse.com To: Christophe Varoqui , Benjamin Marzinski Date: Fri, 1 Sep 2023 20:02:15 +0200 Message-ID: <20230901180235.23980-3-mwilck@suse.com> In-Reply-To: <20230901180235.23980-1-mwilck@suse.com> References: <20230901180235.23980-1-mwilck@suse.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Subject: [dm-devel] [PATCH 02/21] libmultipath: add alias_already_taken() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dm-devel@redhat.com, Martin Wilck , David Bond Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: suse.com From: Martin Wilck Factor out a trivial helper function. Signed-off-by: Martin Wilck Cc: David Bond --- libmultipath/alias.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/libmultipath/alias.c b/libmultipath/alias.c index c0139a2..abde08c 100644 --- a/libmultipath/alias.c +++ b/libmultipath/alias.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "debug.h" #include "util.h" @@ -109,8 +110,24 @@ scan_devname(const char *alias, const char *prefix) return n; } -static int -id_already_taken(int id, const char *prefix, const char *map_wwid) +static bool alias_already_taken(const char *alias, const char *map_wwid) +{ + + if (dm_map_present(alias)) { + char wwid[WWID_SIZE]; + + /* If both the name and the wwid match, then it's fine.*/ + if (dm_get_uuid(alias, wwid, sizeof(wwid)) == 0 && + strncmp(map_wwid, wwid, sizeof(wwid)) == 0) + return false; + condlog(3, "%s: alias '%s' already taken, but not in bindings file. reselecting alias", + map_wwid, alias); + return true; + } + return false; +} + +static bool id_already_taken(int id, const char *prefix, const char *map_wwid) { STRBUF_ON_STACK(buf); const char *alias; @@ -120,20 +137,9 @@ id_already_taken(int id, const char *prefix, const char *map_wwid) return 0; alias = get_strbuf_str(&buf); - if (dm_map_present(alias)) { - char wwid[WWID_SIZE]; - - /* If both the name and the wwid match, then it's fine.*/ - if (dm_get_uuid(alias, wwid, sizeof(wwid)) == 0 && - strncmp(map_wwid, wwid, sizeof(wwid)) == 0) - return 0; - condlog(3, "%s: alias '%s' already taken, but not in bindings file. reselecting alias", map_wwid, alias); - return 1; - } - return 0; + return alias_already_taken(alias, map_wwid); } - /* * Returns: 0 if matching entry in WWIDs file found * -1 if an error occurs