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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 2.78 on 10.11.54.3 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 08ODfmP2026902 X-loop: dm-devel@redhat.com Cc: lixiaokeng@huawei.com, dm-devel@redhat.com, Martin Wilck Subject: [dm-devel] [PATCH 20/23] multipath: use atexit() for cleanup handlers X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com From: Martin Wilck Signed-off-by: Martin Wilck --- multipath/main.c | 39 ++++++++++++++++++--------------------- 1 file changed, 18 insertions(+), 21 deletions(-) diff --git a/multipath/main.c b/multipath/main.c index 9ae46ed..049a36f 100644 --- a/multipath/main.c +++ b/multipath/main.c @@ -452,13 +452,21 @@ static bool released_to_systemd(void) return ret; } +static void cleanup_vecs(__attribute__((unused)) int dummy, void *arg) +{ + struct vectors *vecs = arg; + + free_multipathvec(vecs->mpvec, KEEP_PATHS); + free_pathvec(vecs->pathvec, FREE_PATHS); +} + static int configure (struct config *conf, enum mpath_cmds cmd, enum devtypes dev_type, char *devpath) { vector curmp = NULL; vector pathvec = NULL; - struct vectors vecs; + static struct vectors vecs; int r = RTVL_FAIL, rc; int di_flag = 0; char * refwwid = NULL; @@ -469,6 +477,7 @@ configure (struct config *conf, enum mpath_cmds cmd, */ curmp = vector_alloc(); pathvec = vector_alloc(); + on_exit(cleanup_vecs, &vecs); if (!curmp || !pathvec) { condlog(0, "can not allocate memory"); @@ -580,9 +589,6 @@ out: if (refwwid) FREE(refwwid); - free_multipathvec(curmp, KEEP_PATHS); - free_pathvec(pathvec, FREE_PATHS); - return r; } @@ -808,9 +814,13 @@ main (int argc, char *argv[]) bool enable_foreign = false; libmultipath_init(); + if (atexit(dm_lib_exit) || atexit(libmultipath_exit)) + condlog(1, "failed to register cleanup handler for libmultipath: %m"); logsink = 0; if (init_config(DEFAULT_CONFIGFILE)) exit(RTVL_FAIL); + if (atexit(uninit_config)) + condlog(1, "failed to register cleanup handler for config: %m"); conf = get_multipath_config(); conf->retrigger_tries = 0; conf->force_sync = 1; @@ -887,7 +897,7 @@ main (int argc, char *argv[]) break; case 't': r = dump_config(conf, NULL, NULL) ? RTVL_FAIL : RTVL_OK; - goto out_free_config; + goto out; case 'T': cmd = CMD_DUMP_CONFIG; break; @@ -1048,26 +1058,13 @@ main (int argc, char *argv[]) condlog(3, "restart multipath configuration process"); out: - dm_lib_exit(); - - cleanup_foreign(); - cleanup_prio(); - cleanup_checkers(); + put_multipath_config(conf); + if (dev) + FREE(dev); if (dev_type == DEV_UEVENT) closelog(); -out_free_config: - /* - * Freeing config must be done after dm_lib_exit(), because - * the logging function (dm_write_log()), which is called there, - * references the config. - */ - put_multipath_config(conf); - uninit_config(); - libmultipath_exit(); - if (dev) - FREE(dev); #ifdef _DEBUG_ dbg_free_final(NULL); #endif