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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2018-06-09 18:17:54 +0300 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2018-06-21 09:23:58 -0500 |
| commit | af736e546717d832168dd332a328bfcf74a0ab3d (patch) | |
| tree | af94c9cfcb5e9773527ca08c30b38cecbde97f9e /nbd/server.c | |
| parent | dbb8b396bb46388cee92e9094c563297d04c43ed (diff) | |
| download | qemu-af736e546717d832168dd332a328bfcf74a0ab3d.zip qemu-af736e546717d832168dd332a328bfcf74a0ab3d.tar.gz qemu-af736e546717d832168dd332a328bfcf74a0ab3d.tar.bz2 | |
nbd/server: refactor NBDExportMetaContexts
Use NBDExport pointer instead of just export name: there is no need to
store a duplicated name in the struct; moreover, NBDExport will be used
further.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20180609151758.17343-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: commit message grammar tweak]
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'nbd/server.c')
| -rw-r--r-- | nbd/server.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/nbd/server.c b/nbd/server.c index 942c016..26cc41a 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -88,7 +88,7 @@ static QTAILQ_HEAD(, NBDExport) exports = QTAILQ_HEAD_INITIALIZER(exports); * as selected by NBD_OPT_SET_META_CONTEXT. Also used for * NBD_OPT_LIST_META_CONTEXT. */ typedef struct NBDExportMetaContexts { - char export_name[NBD_MAX_NAME_SIZE + 1]; + NBDExport *exp; bool valid; /* means that negotiation of the option finished without errors */ bool base_allocation; /* export base:allocation context (block status) */ @@ -399,10 +399,9 @@ static int nbd_negotiate_handle_list(NBDClient *client, Error **errp) return nbd_negotiate_send_rep(client, NBD_REP_ACK, errp); } -static void nbd_check_meta_export_name(NBDClient *client) +static void nbd_check_meta_export(NBDClient *client) { - client->export_meta.valid &= !strcmp(client->exp->name, - client->export_meta.export_name); + client->export_meta.valid &= client->exp == client->export_meta.exp; } /* Send a reply to NBD_OPT_EXPORT_NAME. @@ -456,7 +455,7 @@ static int nbd_negotiate_handle_export_name(NBDClient *client, QTAILQ_INSERT_TAIL(&client->exp->clients, client, next); nbd_export_get(client->exp); - nbd_check_meta_export_name(client); + nbd_check_meta_export(client); return 0; } @@ -650,7 +649,7 @@ static int nbd_negotiate_handle_info(NBDClient *client, uint16_t myflags, client->exp = exp; QTAILQ_INSERT_TAIL(&client->exp->clients, client, next); nbd_export_get(client->exp); - nbd_check_meta_export_name(client); + nbd_check_meta_export(client); rc = 1; } return rc; @@ -835,7 +834,7 @@ static int nbd_negotiate_meta_queries(NBDClient *client, NBDExportMetaContexts *meta, Error **errp) { int ret; - NBDExport *exp; + char export_name[NBD_MAX_NAME_SIZE + 1]; NBDExportMetaContexts local_meta; uint32_t nb_queries; int i; @@ -854,15 +853,15 @@ static int nbd_negotiate_meta_queries(NBDClient *client, memset(meta, 0, sizeof(*meta)); - ret = nbd_opt_read_name(client, meta->export_name, NULL, errp); + ret = nbd_opt_read_name(client, export_name, NULL, errp); if (ret <= 0) { return ret; } - exp = nbd_export_find(meta->export_name); - if (exp == NULL) { + meta->exp = nbd_export_find(export_name); + if (meta->exp == NULL) { return nbd_opt_drop(client, NBD_REP_ERR_UNKNOWN, errp, - "export '%s' not present", meta->export_name); + "export '%s' not present", export_name); } ret = nbd_opt_read(client, &nb_queries, sizeof(nb_queries), errp); @@ -871,7 +870,7 @@ static int nbd_negotiate_meta_queries(NBDClient *client, } cpu_to_be32s(&nb_queries); trace_nbd_negotiate_meta_context(nbd_opt_lookup(client->opt), - meta->export_name, nb_queries); + export_name, nb_queries); if (client->opt == NBD_OPT_LIST_META_CONTEXT && !nb_queries) { /* enable all known contexts */ |