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hw/usb/ccid: Make ccid_card_init() take an error parameter 

Replace init() of CCIDCardClass with realize, then convert
ccid_card_init(), ccid_card_initfn() and it's callbacks to
take an Error** in ordor to report the error more clearly.

Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180125171432.13554-2-f4bug@amsat.org
[PMD: fixed s->card assignation in ccid_card_realize()]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Mao Zhongyi 2018-01-25 14:14:30 -03:00 committed by Gerd Hoffmann
parent 395b953959
commit cc847bfd16
4 changed files with 50 additions and 45 deletions
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44
hw/usb/ccid-card-emulated.c
View File

@ -35,6 +35,7 @@
#include "qemu/thread.h"
#include "qemu/main-loop.h"
#include "ccid.h"
#include "qapi/error.h"
#define DPRINTF(card, lvl, fmt, ...) \
do {\
@ -401,10 +402,10 @@ static void card_event_handler(EventNotifier *notifier)
qemu_mutex_unlock(&card->event_list_mutex);
}
static int init_event_notifier(EmulatedState *card)
static int init_event_notifier(EmulatedState *card, Error **errp)
{
if (event_notifier_init(&card->notifier, false) < 0) {
DPRINTF(card, 2, "event notifier creation failed\n");
error_setg(errp, "ccid-card-emul: event notifier creation failed");
return -1;
}
event_notifier_set_handler(&card->notifier, card_event_handler);
@ -480,7 +481,7 @@ static uint32_t parse_enumeration(char *str,
return ret;
}
static int emulated_initfn(CCIDCardState *base)
static void emulated_realize(CCIDCardState *base, Error **errp)
{
EmulatedState *card = EMULATED_CCID_CARD(base);
VCardEmulError ret;
@ -494,8 +495,8 @@ static int emulated_initfn(CCIDCardState *base)
qemu_cond_init(&card->handle_apdu_cond);
card->reader = NULL;
card->quit_apdu_thread = 0;
if (init_event_notifier(card) < 0) {
return -1;
if (init_event_notifier(card, errp) < 0) {
return;
}
card->backend = 0;
@ -505,11 +506,11 @@ static int emulated_initfn(CCIDCardState *base)
}
if (card->backend == 0) {
printf("backend must be one of:\n");
error_setg(errp, "backend must be one of:");
for (ptable = backend_enum_table; ptable->name != NULL; ++ptable) {
printf("%s\n", ptable->name);
error_append_hint(errp, "%s\n", ptable->name);
}
return -1;
return;
}
/* TODO: a passthru backened that works on local machine. third card type?*/
@ -517,34 +518,33 @@ static int emulated_initfn(CCIDCardState *base)
if (card->cert1 != NULL && card->cert2 != NULL && card->cert3 != NULL) {
ret = emulated_initialize_vcard_from_certificates(card);
} else {
printf("%s: you must provide all three certs for"
" certificates backend\n", TYPE_EMULATED_CCID);
return -1;
error_setg(errp, "%s: you must provide all three certs for"
" certificates backend", TYPE_EMULATED_CCID);
return;
}
} else {
if (card->backend != BACKEND_NSS_EMULATED) {
printf("%s: bad backend specified. The options are:\n%s (default),"
" %s.\n", TYPE_EMULATED_CCID, BACKEND_NSS_EMULATED_NAME,
BACKEND_CERTIFICATES_NAME);
return -1;
error_setg(errp, "%s: bad backend specified. The options are:%s"
" (default), %s.", TYPE_EMULATED_CCID,
BACKEND_NSS_EMULATED_NAME, BACKEND_CERTIFICATES_NAME);
return;
}
if (card->cert1 != NULL || card->cert2 != NULL || card->cert3 != NULL) {
printf("%s: unexpected cert parameters to nss emulated backend\n",
TYPE_EMULATED_CCID);
return -1;
error_setg(errp, "%s: unexpected cert parameters to nss emulated "
"backend", TYPE_EMULATED_CCID);
return;
}
/* default to mirroring the local hardware readers */
ret = wrap_vcard_emul_init(NULL);
}
if (ret != VCARD_EMUL_OK) {
printf("%s: failed to initialize vcard\n", TYPE_EMULATED_CCID);
return -1;
error_setg(errp, "%s: failed to initialize vcard", TYPE_EMULATED_CCID);
return;
}
qemu_thread_create(&card->event_thread_id, "ccid/event", event_thread,
card, QEMU_THREAD_JOINABLE);
qemu_thread_create(&card->apdu_thread_id, "ccid/apdu", handle_apdu_thread,
card, QEMU_THREAD_JOINABLE);
return 0;
}
static void emulated_exitfn(CCIDCardState *base)
@ -581,7 +581,7 @@ static void emulated_class_initfn(ObjectClass *klass, void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
CCIDCardClass *cc = CCID_CARD_CLASS(klass);
cc->initfn = emulated_initfn;
cc->realize = emulated_realize;
cc->exitfn = emulated_exitfn;
cc->get_atr = emulated_get_atr;
cc->apdu_from_guest = emulated_apdu_from_guest;

12
hw/usb/ccid-card-passthru.c
View File

@ -14,6 +14,7 @@
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "ccid.h"
#include "qapi/error.h"
#define DPRINTF(card, lvl, fmt, ...) \
do { \
@ -337,29 +338,28 @@ static const uint8_t *passthru_get_atr(CCIDCardState *base, uint32_t *len)
return card->atr;
}
static int passthru_initfn(CCIDCardState *base)
static void passthru_realize(CCIDCardState *base, Error **errp)
{
PassthruState *card = PASSTHRU_CCID_CARD(base);
card->vscard_in_pos = 0;
card->vscard_in_hdr = 0;
if (qemu_chr_fe_backend_connected(&card->cs)) {
DPRINTF(card, D_INFO, "initing chardev\n");
error_setg(errp, "ccid-card-passthru: initing chardev");
qemu_chr_fe_set_handlers(&card->cs,
ccid_card_vscard_can_read,
ccid_card_vscard_read,
ccid_card_vscard_event, NULL, card, NULL, true);
ccid_card_vscard_send_init(card);
} else {
error_report("missing chardev");
return -1;
error_setg(errp, "missing chardev");
return;
}
card->debug = parse_debug_env("QEMU_CCID_PASSTHRU_DEBUG", D_VERBOSE,
card->debug);
assert(sizeof(DEFAULT_ATR) <= MAX_ATR_SIZE);
memcpy(card->atr, DEFAULT_ATR, sizeof(DEFAULT_ATR));
card->atr_length = sizeof(DEFAULT_ATR);
return 0;
}
static VMStateDescription passthru_vmstate = {
@ -387,7 +387,7 @@ static void passthru_class_initfn(ObjectClass *klass, void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
CCIDCardClass *cc = CCID_CARD_CLASS(klass);
cc->initfn = passthru_initfn;
cc->realize = passthru_realize;
cc->get_atr = passthru_get_atr;
cc->apdu_from_guest = passthru_apdu_from_guest;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);

2
hw/usb/ccid.h
View File

@ -34,7 +34,7 @@ typedef struct CCIDCardClass {
const uint8_t *apdu,
uint32_t len);
void (*exitfn)(CCIDCardState *card);
int (*initfn)(CCIDCardState *card);
void (*realize)(CCIDCardState *card, Error **errp);
} CCIDCardClass;
/*

37
hw/usb/dev-smartcard-reader.c
View File

@ -510,14 +510,18 @@ static void ccid_card_exitfn(CCIDCardState *card)
}
static int ccid_card_initfn(CCIDCardState *card)
static void ccid_card_initfn(CCIDCardState *card, Error **errp)
{
CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
Error *local_err = NULL;
if (cc->initfn) {
return cc->initfn(card);
if (cc->realize) {
cc->realize(card, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
}
return 0;
}
static bool ccid_has_pending_answers(USBCCIDState *s)
@ -1295,27 +1299,28 @@ static int ccid_card_exit(DeviceState *qdev)
return 0;
}
static int ccid_card_init(DeviceState *qdev)
static void ccid_card_realize(DeviceState *qdev, Error **errp)
{
CCIDCardState *card = CCID_CARD(qdev);
USBDevice *dev = USB_DEVICE(qdev->parent_bus->parent);
USBCCIDState *s = USB_CCID_DEV(dev);
int ret = 0;
Error *local_err = NULL;
if (card->slot != 0) {
warn_report("usb-ccid supports one slot, can't add %d",
card->slot);
return -1;
error_setg(errp, "usb-ccid supports one slot, can't add %d",
card->slot);
return;
}
if (s->card != NULL) {
warn_report("usb-ccid card already full, not adding");
return -1;
error_setg(errp, "usb-ccid card already full, not adding");
return;
}
ret = ccid_card_initfn(card);
if (ret == 0) {
s->card = card;
ccid_card_initfn(card, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
return ret;
s->card = card;
}
static void ccid_realize(USBDevice *dev, Error **errp)
@ -1477,7 +1482,7 @@ static void ccid_card_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
k->bus_type = TYPE_CCID_BUS;
k->init = ccid_card_init;
k->realize = ccid_card_realize;
k->exit = ccid_card_exit;
k->props = ccid_props;
}