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qemu-option: Use returned bool to check for failure

Browse source 
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]
This commit is contained in:
Markus Armbruster 2020-07-07 18:05:42 +02:00
parent c75d7f7191
commit 235e59cf03
32 changed files with 71 additions and 133 deletions
Download patch file Download diff file Expand all files Collapse all files

11
blockdev.c
View file

@ -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;
}