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backends: Have HostMemoryBackendClass::alloc() handler return a boolean

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Following the example documented since commit e3fe3988d7 ("error:
Document Error API usage rules"), have HostMemoryBackendClass::alloc
return a boolean indicating whether an error is set or not.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Message-Id: <20231120213301.24349-17-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2023-11-20 13:50:52 +01:00
parent e199f7ad4d
commit fdb63cf3b5
6 changed files with 36 additions and 28 deletions
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19
backends/hostmem-file.c
View file

@ -36,12 +36,13 @@ struct HostMemoryBackendFile {
OnOffAuto rom;
};
static void
static bool
file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
{
#ifndef CONFIG_POSIX
error_setg(errp, "backend '%s' not supported on this host",
object_get_typename(OBJECT(backend)));
return false;
#else
HostMemoryBackendFile *fb = MEMORY_BACKEND_FILE(backend);
g_autofree gchar *name = NULL;
@ -49,11 +50,11 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
if (!backend->size) {
error_setg(errp, "can't create backend with size 0");
return;
return false;
}
if (!fb->mem_path) {
error_setg(errp, "mem-path property not set");
return;
return false;
}
switch (fb->rom) {
@ -65,18 +66,18 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
if (!fb->readonly) {
error_setg(errp, "property 'rom' = 'on' is not supported with"
" 'readonly' = 'off'");
return;
return false;
}
break;
case ON_OFF_AUTO_OFF:
if (fb->readonly && backend->share) {
error_setg(errp, "property 'rom' = 'off' is incompatible with"
" 'readonly' = 'on' and 'share' = 'on'");
return;
return false;
}
break;
default:
assert(false);
g_assert_not_reached();
}
name = host_memory_backend_get_name(backend);
@ -86,9 +87,9 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
ram_flags |= fb->is_pmem ? RAM_PMEM : 0;
ram_flags |= RAM_NAMED_FILE;
memory_region_init_ram_from_file(&backend->mr, OBJECT(backend), name,
backend->size, fb->align, ram_flags,
fb->mem_path, fb->offset, errp);
return memory_region_init_ram_from_file(&backend->mr, OBJECT(backend), name,
backend->size, fb->align, ram_flags,
fb->mem_path, fb->offset, errp);
#endif
}