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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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11
backends/hostmem-epc.c
View file

@ -17,7 +17,7 @@
#include "sysemu/hostmem.h"
#include "hw/i386/hostmem-epc.h"
static void
static bool
sgx_epc_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
{
g_autofree char *name = NULL;
@ -26,21 +26,20 @@ sgx_epc_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
if (!backend->size) {
error_setg(errp, "can't create backend with size 0");
return;
return false;
}
fd = qemu_open_old("/dev/sgx_vepc", O_RDWR);
if (fd < 0) {
error_setg_errno(errp, errno,
"failed to open /dev/sgx_vepc to alloc SGX EPC");
return;
return false;
}
name = object_get_canonical_path(OBJECT(backend));
ram_flags = (backend->share ? RAM_SHARED : 0) | RAM_PROTECTED;
memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend),
name, backend->size, ram_flags,
fd, 0, errp);
return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name,
backend->size, ram_flags, fd, 0, errp);
}
static void sgx_epc_backend_instance_init(Object *obj)