qemu-option: Use returned bool to check for failure

The previous commit enables conversion of

    foo(..., &err);
    if (err) {
        ...
    }

to

    if (!foo(..., &err)) {
        ...
    }

for QemuOpts functions that now return true / false on success /
error.  Coccinelle script:

    @@
    identifier fun = {
        opts_do_parse, parse_option_bool, parse_option_number,
        parse_option_size, qemu_opt_parse, qemu_opt_rename, qemu_opt_set,
        qemu_opt_set_bool, qemu_opt_set_number, qemu_opts_absorb_qdict,
        qemu_opts_do_parse, qemu_opts_from_qdict_entry, qemu_opts_set,
        qemu_opts_validate
    };
    expression list args, args2;
    typedef Error;
    Error *err;
    @@
    -    fun(args, &err, args2);
    -    if (err)
    +    if (!fun(args, &err, args2))
         {
             ...
         }

A few line breaks tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-15-armbru@redhat.com>
[Conflict with commit 0b6786a9c1 "block/amend: refactor qcow2 amend
options" resolved by rerunning Coccinelle on master's version]

block.c

@@ -1629,8 +1629,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockBackend *file,
     assert(options != NULL && bs->options != options);
 
     opts = qemu_opts_create(&bdrv_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail_opts;
@@ -4091,8 +4090,7 @@ int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue,
 
     /* Process generic block layer options */
     opts = qemu_opts_create(&bdrv_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, reopen_state->options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, reopen_state->options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto error;
@@ -6063,8 +6061,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
 
     /* Parse -o options */
     if (options) {
-        qemu_opts_do_parse(opts, options, NULL, &local_err);
-        if (local_err) {
+        if (!qemu_opts_do_parse(opts, options, NULL, &local_err)) {
             goto out;
         }
     }
@@ -6077,8 +6074,8 @@ void bdrv_img_create(const char *filename, const char *fmt,
     }
 
     if (base_filename) {
-        qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &local_err);
-        if (local_err) {
+        if (!qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename,
+                          &local_err)) {
             error_setg(errp, "Backing file not supported for file format '%s'",
                        fmt);
             goto out;
@@ -6086,8 +6083,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
     }
 
     if (base_fmt) {
-        qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &local_err);
-        if (local_err) {
+        if (!qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &local_err)) {
             error_setg(errp, "Backing file format not supported for file "
                              "format '%s'", fmt);
             goto out;

block/blkdebug.c

@@ -472,8 +472,7 @@ static int blkdebug_open(BlockDriverState *bs, QDict *options, int flags,
     uint64_t align;
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto out;

block/blklogwrites.c

@@ -149,8 +149,7 @@ static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags,
     bool log_append;
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         ret = -EINVAL;
         error_propagate(errp, local_err);
         goto fail;

block/blkverify.c

@@ -116,8 +116,7 @@ static int blkverify_open(BlockDriverState *bs, QDict *options, int flags,
     int ret;
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;

block/crypto.c

@@ -276,8 +276,7 @@ static int block_crypto_open_generic(QCryptoBlockFormat format,
         bs->file->bs->supported_write_flags;
 
     opts = qemu_opts_create(opts_spec, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         goto cleanup;
     }

block/curl.c

@@ -695,8 +695,7 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags,
 
     qemu_mutex_init(&s->mutex);
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         goto out_noclean;
     }

block/file-posix.c

@@ -490,8 +490,7 @@ static int raw_open_common(BlockDriverState *bs, QDict *options,
     OnOffAuto locking;
 
     opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;
@@ -1000,8 +999,7 @@ static int raw_reopen_prepare(BDRVReopenState *state,
 
     /* Handle options changes */
     opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, state->options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, state->options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto out;

block/file-win32.c

@@ -338,8 +338,7 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
     s->type = FTYPE_FILE;
 
     opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;
@@ -739,8 +738,7 @@ static int hdev_open(BlockDriverState *bs, QDict *options, int flags,
 
     QemuOpts *opts = qemu_opts_create(&raw_runtime_opts, NULL, 0,
                                       &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto done;

block/gluster.c

@@ -523,8 +523,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
 
     /* create opts info from runtime_json_opts list */
     opts = qemu_opts_create(&runtime_json_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         goto out;
     }
 
@@ -555,8 +554,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
 
         /* create opts info from runtime_type_opts list */
         opts = qemu_opts_create(&runtime_type_opts, NULL, 0, &error_abort);
-        qemu_opts_absorb_qdict(opts, backing_options, &local_err);
-        if (local_err) {
+        if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
             goto out;
         }
 
@@ -586,8 +584,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
         if (gsconf->type == SOCKET_ADDRESS_TYPE_INET) {
             /* create opts info from runtime_inet_opts list */
             opts = qemu_opts_create(&runtime_inet_opts, NULL, 0, &error_abort);
-            qemu_opts_absorb_qdict(opts, backing_options, &local_err);
-            if (local_err) {
+            if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
                 goto out;
             }
 
@@ -635,8 +632,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
         } else {
             /* create opts info from runtime_unix_opts list */
             opts = qemu_opts_create(&runtime_unix_opts, NULL, 0, &error_abort);
-            qemu_opts_absorb_qdict(opts, backing_options, &local_err);
-            if (local_err) {
+            if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
                 goto out;
             }
 
@@ -819,8 +815,7 @@ static int qemu_gluster_open(BlockDriverState *bs,  QDict *options,
     const char *filename, *logfile;
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto out;

block/iscsi.c

@@ -1792,8 +1792,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
     int i, ret = 0, timeout = 0, lun;
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto out;

block/nbd.c

@@ -1840,8 +1840,7 @@ static int nbd_process_options(BlockDriverState *bs, QDict *options,
     int ret = -EINVAL;
 
     opts = qemu_opts_create(&nbd_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         goto error;
     }

block/parallels.c

@@ -829,8 +829,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
         goto fail_options;
     }
 
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err != NULL) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         goto fail_options;
     }
 

block/qcow2.c

@@ -990,8 +990,7 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
     encryptfmt = qdict_get_try_str(encryptopts, "format");
 
     opts = qemu_opts_create(&qcow2_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;

block/quorum.c

@@ -922,8 +922,7 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
     }
 
     opts = qemu_opts_create(&quorum_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         ret = -EINVAL;
         goto exit;
     }

block/raw-format.c

@@ -79,8 +79,7 @@ static int raw_read_options(QDict *options, uint64_t *offset, bool *has_size,
     int ret;
 
     opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto end;

block/replication.c

@@ -99,8 +99,7 @@ static int replication_open(BlockDriverState *bs, QDict *options,
 
     ret = -EINVAL;
     opts = qemu_opts_create(&replication_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         goto fail;
     }
 

block/sheepdog.c

@@ -1556,8 +1556,7 @@ static int sd_open(BlockDriverState *bs, QDict *options, int flags,
     s->aio_context = bdrv_get_aio_context(bs);
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto err_no_fd;

block/ssh.c

@@ -622,8 +622,7 @@ static BlockdevOptionsSsh *ssh_parse_options(QDict *options, Error **errp)
 
     /* Translate legacy options */
     opts = qemu_opts_create(&ssh_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         goto fail;
     }

block/throttle.c

@@ -49,8 +49,7 @@ static int throttle_parse_options(QDict *options, char **group, Error **errp)
     Error *local_err = NULL;
     QemuOpts *opts = qemu_opts_create(&throttle_opts, NULL, 0, &error_abort);
 
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fin;

block/vpc.c

@@ -235,8 +235,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
     }
 
     opts = qemu_opts_create(&vpc_runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;

block/vvfat.c

@@ -1149,8 +1149,7 @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
 #endif
 
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         error_propagate(errp, local_err);
         ret = -EINVAL;
         goto fail;

block/vxhs.c

@@ -318,8 +318,7 @@ static int vxhs_open(BlockDriverState *bs, QDict *options,
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
     tcp_opts = qemu_opts_create(&runtime_tcp_opts, NULL, 0, &error_abort);
 
-    qemu_opts_absorb_qdict(opts, options, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
         ret = -EINVAL;
         goto out;
     }
@@ -346,8 +345,7 @@ static int vxhs_open(BlockDriverState *bs, QDict *options,
     /* get the 'server.' arguments */
     qdict_extract_subqdict(options, &backing_options, VXHS_OPT_SERVER".");
 
-    qemu_opts_absorb_qdict(tcp_opts, backing_options, &local_err);
-    if (local_err != NULL) {
+    if (!qemu_opts_absorb_qdict(tcp_opts, backing_options, &local_err)) {
         ret = -EINVAL;
         goto out;
     }

blockdev.c

@@ -509,8 +509,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
         goto err_no_opts;
     }
 
-    qemu_opts_absorb_qdict(opts, bs_opts, &error);
-    if (error) {
+    if (!qemu_opts_absorb_qdict(opts, bs_opts, &error)) {
         error_propagate(errp, error);
         goto early_err;
     }
@@ -827,9 +826,8 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type,
     };
 
     for (i = 0; i < ARRAY_SIZE(opt_renames); i++) {
-        qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to,
-                        &local_err);
-        if (local_err) {
+        if (!qemu_opt_rename(all_opts, opt_renames[i].from,
+                             opt_renames[i].to, &local_err)) {
             error_propagate(errp, local_err);
             return NULL;
         }
@@ -867,8 +865,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type,
 
     legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0,
                                    &error_abort);
-    qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err)) {
         error_propagate(errp, local_err);
         goto fail;
     }

chardev/char.c

@@ -444,8 +444,7 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename,
         qemu_opt_set(opts, "host", host, &error_abort);
         qemu_opt_set(opts, "port", port, &error_abort);
         if (p[pos] == ',') {
-            qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
-            if (local_err) {
+            if (!qemu_opts_do_parse(opts, p + pos + 1, NULL, &local_err)) {
                 error_report_err(local_err);
                 goto fail;
             }
@@ -484,8 +483,7 @@ QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename,
     }
     if (strstart(filename, "unix:", &p)) {
         qemu_opt_set(opts, "backend", "socket", &error_abort);
-        qemu_opts_do_parse(opts, p, "path", &local_err);
-        if (local_err) {
+        if (!qemu_opts_do_parse(opts, p, "path", &local_err)) {
             error_report_err(local_err);
             goto fail;
         }

contrib/ivshmem-server/main.c

@@ -103,8 +103,8 @@ ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[])
             break;
 
         case 'l': /* shm size */
-            parse_option_size("shm_size", optarg, &args->shm_size, &err);
-            if (err) {
+            if (!parse_option_size("shm_size", optarg, &args->shm_size,
+                                   &err)) {
                 error_report_err(err);
                 ivshmem_server_help(argv[0]);
                 exit(1);

hw/net/virtio-net.c

@@ -3137,9 +3137,8 @@ static bool failover_replug_primary(VirtIONet *n, Error **errp)
     }
     qdev_set_parent_bus(n->primary_dev, n->primary_bus);
     n->primary_should_be_hidden = false;
-    qemu_opt_set_bool(n->primary_device_opts,
-                      "partially_hotplugged", true, &err);
-    if (err) {
+    if (!qemu_opt_set_bool(n->primary_device_opts,
+                           "partially_hotplugged", true, &err)) {
         goto out;
     }
     hotplug_ctrl = qdev_get_hotplug_handler(n->primary_dev);

hw/smbios/smbios.c

@@ -964,8 +964,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
         int size;
         struct smbios_table *table; /* legacy mode only */
 
-        qemu_opts_validate(opts, qemu_smbios_file_opts, &err);
-        if (err) {
+        if (!qemu_opts_validate(opts, qemu_smbios_file_opts, &err)) {
             error_propagate(errp, err);
             return;
         }
@@ -1051,8 +1050,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
 
         switch (type) {
         case 0:
-            qemu_opts_validate(opts, qemu_smbios_type0_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type0_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
@@ -1071,8 +1069,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             }
             return;
         case 1:
-            qemu_opts_validate(opts, qemu_smbios_type1_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type1_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
@@ -1093,8 +1090,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             }
             return;
         case 2:
-            qemu_opts_validate(opts, qemu_smbios_type2_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type2_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
@@ -1106,8 +1102,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type2.location, opts, "location");
             return;
         case 3:
-            qemu_opts_validate(opts, qemu_smbios_type3_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type3_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
@@ -1118,8 +1113,7 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type3.sku, opts, "sku");
             return;
         case 4:
-            qemu_opts_validate(opts, qemu_smbios_type4_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type4_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
@@ -1131,16 +1125,14 @@ void smbios_entry_add(QemuOpts *opts, Error **errp)
             save_opt(&type4.part, opts, "part");
             return;
         case 11:
-            qemu_opts_validate(opts, qemu_smbios_type11_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type11_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }
             save_opt_list(&type11.nvalues, &type11.values, opts, "value");
             return;
         case 17:
-            qemu_opts_validate(opts, qemu_smbios_type17_opts, &err);
-            if (err) {
+            if (!qemu_opts_validate(opts, qemu_smbios_type17_opts, &err)) {
                 error_propagate(errp, err);
                 return;
             }

qapi/string-input-visitor.c

@@ -318,8 +318,7 @@ static void parse_type_size(Visitor *v, const char *name, uint64_t *obj,
     uint64_t val;
 
     assert(siv->lm == LM_NONE);
-    parse_option_size(name, siv->string, &val, &err);
-    if (err) {
+    if (!parse_option_size(name, siv->string, &val, &err)) {
         error_propagate(errp, err);
         return;
     }

qemu-img.c

@@ -468,8 +468,8 @@ static int add_old_style_options(const char *fmt, QemuOpts *opts,
     Error *err = NULL;
 
     if (base_filename) {
-        qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err);
-        if (err) {
+        if (!qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename,
+                          &err)) {
             error_report("Backing file not supported for file format '%s'",
                          fmt);
             error_free(err);
@@ -477,8 +477,7 @@ static int add_old_style_options(const char *fmt, QemuOpts *opts,
         }
     }
     if (base_fmt) {
-        qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err);
-        if (err) {
+        if (!qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err)) {
             error_report("Backing file format not supported for file "
                          "format '%s'", fmt);
             error_free(err);
@@ -2487,8 +2486,7 @@ static int img_convert(int argc, char **argv)
 
         opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
         if (options) {
-            qemu_opts_do_parse(opts, options, NULL, &local_err);
-            if (local_err) {
+            if (!qemu_opts_do_parse(opts, options, NULL, &local_err)) {
                 error_report_err(local_err);
                 ret = -1;
                 goto out;
@@ -3963,8 +3961,7 @@ static int img_resize(int argc, char **argv)
 
     /* Parse size */
     param = qemu_opts_create(&resize_options, NULL, 0, &error_abort);
-    qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err);
-    if (err) {
+    if (!qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err)) {
         error_report_err(err);
         ret = -1;
         qemu_opts_del(param);
@@ -4215,9 +4212,7 @@ static int img_amend(int argc, char **argv)
 
     amend_opts = qemu_opts_append(amend_opts, bs->drv->amend_opts);
     opts = qemu_opts_create(amend_opts, NULL, 0, &error_abort);
-    qemu_opts_do_parse(opts, options, NULL, &err);
-
-    if (err) {
+    if (!qemu_opts_do_parse(opts, options, NULL, &err)) {
         /* Try to parse options using the create options */
         Error *err1 = NULL;
         amend_opts = qemu_opts_append(amend_opts, bs->drv->create_opts);
@@ -5363,8 +5358,7 @@ static int img_measure(int argc, char **argv)
     create_opts = qemu_opts_append(create_opts, bdrv_file.create_opts);
     opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
     if (options) {
-        qemu_opts_do_parse(opts, options, NULL, &local_err);
-        if (local_err) {
+        if (!qemu_opts_do_parse(opts, options, NULL, &local_err)) {
             error_report_err(local_err);
             error_report("Invalid options for file format '%s'", out_fmt);
             goto out;

tpm.c

@@ -116,8 +116,7 @@ static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
     }
 
     /* validate backend specific opts */
-    qemu_opts_validate(opts, be->opts, &local_err);
-    if (local_err) {
+    if (!qemu_opts_validate(opts, be->opts, &local_err)) {
         error_propagate(errp, local_err);
         return 1;
     }

util/qemu-config.c

@@ -339,8 +339,7 @@ int qemu_set_option(const char *str)
         return -1;
     }
 
-    qemu_opt_set(opts, arg, str + offset + 1, &local_err);
-    if (local_err) {
+    if (!qemu_opt_set(opts, arg, str + offset + 1, &local_err)) {
         error_report_err(local_err);
         return -1;
     }
@@ -441,8 +440,7 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname)
                 error_report("no group defined");
                 goto out;
             }
-            qemu_opt_set(opts, arg, value, &local_err);
-            if (local_err) {
+            if (!qemu_opt_set(opts, arg, value, &local_err)) {
                 error_report_err(local_err);
                 goto out;
             }
@@ -498,8 +496,7 @@ static void config_parse_qdict_section(QDict *options, QemuOptsList *opts,
         goto out;
     }
 
-    qemu_opts_absorb_qdict(subopts, subqdict, &local_err);
-    if (local_err) {
+    if (!qemu_opts_absorb_qdict(subopts, subqdict, &local_err)) {
         error_propagate(errp, local_err);
         goto out;
     }
@@ -543,8 +540,7 @@ static void config_parse_qdict_section(QDict *options, QemuOptsList *opts,
                 goto out;
             }
 
-            qemu_opts_absorb_qdict(subopts, section, &local_err);
-            if (local_err) {
+            if (!qemu_opts_absorb_qdict(subopts, section, &local_err)) {
                 error_propagate(errp, local_err);
                 qemu_opts_del(subopts);
                 goto out;

util/qemu-option.c

@@ -536,8 +536,7 @@ static bool opt_validate(QemuOpt *opt, bool *help_wanted,
     }
 
     opt->desc = desc;
-    qemu_opt_parse(opt, &local_err);
-    if (local_err) {
+    if (!qemu_opt_parse(opt, &local_err)) {
         error_propagate(errp, local_err);
         return false;
     }
@@ -929,8 +928,8 @@ static QemuOpts *opts_parse(QemuOptsList *list, const char *params,
         return NULL;
     }
 
-    opts_do_parse(opts, params, firstname, defaults, help_wanted, &local_err);
-    if (local_err) {
+    if (!opts_do_parse(opts, params, firstname, defaults, help_wanted,
+                       &local_err)) {
         error_propagate(errp, local_err);
         qemu_opts_del(opts);
         return NULL;
@@ -1045,8 +1044,7 @@ QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
     for (entry = qdict_first(qdict);
          entry;
          entry = qdict_next(qdict, entry)) {
-        qemu_opts_from_qdict_entry(opts, entry, &local_err);
-        if (local_err) {
+        if (!qemu_opts_from_qdict_entry(opts, entry, &local_err)) {
             error_propagate(errp, local_err);
             qemu_opts_del(opts);
             return NULL;
@@ -1073,8 +1071,7 @@ bool qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp)
         next = qdict_next(qdict, entry);
 
         if (find_desc_by_name(opts->list->desc, entry->key)) {
-            qemu_opts_from_qdict_entry(opts, entry, &local_err);
-            if (local_err) {
+            if (!qemu_opts_from_qdict_entry(opts, entry, &local_err)) {
                 error_propagate(errp, local_err);
                 return false;
             }
@@ -1158,8 +1155,7 @@ bool qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp)
             return false;
         }
 
-        qemu_opt_parse(opt, &local_err);
-        if (local_err) {
+        if (!qemu_opt_parse(opt, &local_err)) {
             error_propagate(errp, local_err);
             return false;
         }