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]

1 files changed, 8 insertions, 16 deletions

diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index ffd98727ee..87afcf9142 100644
--- a/hw/smbios/smbios.c
+++ b/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;
             }