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111a38b018
libcacard emulates a Common Access Card (CAC) which is a standard
for smartcards. It is used by the emulated ccid card introduced in
a following patch. Docs are available in docs/libcacard.txt
Signed-off-by: Alon Levy <alevy@redhat.com>
---
changes from v24->v25:
* Fix out of tree builds.
* Fix build with linux-user targets.
changes from v23->v24: (Jes Sorensen review 2)
* Makefile.target: use obj-$(CONFIG_*) +=
* remove unrequired includes, include qemu-common before qemu-thread
* required adding #define NO_NSPR_10_SUPPORT (harmless)
changes from v22->v23:
* configure fixes: (reported by Stefan Hajnoczi)
* test a = b, not a == b (second isn't portable)
* quote $source_path in case it contains spaces
- this doesn't really help since there are many other places
that need similar fixes, not introduced by this patch.
changes from v21->v22:
* fix configure to not link libcacard if nss not found
(reported by Stefan Hajnoczi)
* fix vscclient linkage with simpletrace backend
(reported by Stefan Hajnoczi)
* card_7816.c: add missing break in ERROR_DATA_NOT_FOUND
(reported by William van de Velde)
changes from v20->v21: (Jes Sorensen review)
* use qemu infrastructure: qemu-thread, qemu-common (qemu_malloc
and qemu_free), error_report
* assert instead of ASSERT
* cosmetic fixes
* use strpbrk and isspace
* add --disable-nss --enable-nss here, instead of in the final patch.
* split vscclient, passthru and docs to following patches.
changes from v19->v20:
* checkpatch.pl
changes from v15->v16:
Build:
* don't erase self with distclean
* fix make clean after make distclean
* Makefile: make vscclient link quiet
Behavioral:
* vcard_emul_nss: load coolkey in more situations
* vscclient:
* use hton,ntoh
* send init on connect, only start vevent thread on response
* read payload after header check, before type switch
* remove Reconnect
* update for vscard_common changes, empty Flush implementation
Style/Whitespace:
* fix wrong variable usage
* remove unused variable
* use only C style comments
* add copyright header
* fix tabulation
Signed-off-by: Alon Levy <alevy@redhat.com>
libcacard: fix out of tree builds
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/*
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* event queue implementation.
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*
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* This code is licensed under the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include "qemu-common.h"
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#include "qemu-thread.h"
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#include "vcard.h"
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#include "vreader.h"
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#include "vevent.h"
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VEvent *
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vevent_new(VEventType type, VReader *reader, VCard *card)
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{
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VEvent *new_vevent;
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new_vevent = (VEvent *)qemu_malloc(sizeof(VEvent));
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new_vevent->next = NULL;
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new_vevent->type = type;
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new_vevent->reader = vreader_reference(reader);
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new_vevent->card = vcard_reference(card);
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return new_vevent;
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}
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void
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vevent_delete(VEvent *vevent)
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{
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if (vevent == NULL) {
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return;
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}
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vreader_free(vevent->reader);
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vcard_free(vevent->card);
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qemu_free(vevent);
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}
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/*
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* VEvent queue management
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*/
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static VEvent *vevent_queue_head;
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static VEvent *vevent_queue_tail;
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static QemuMutex vevent_queue_lock;
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static QemuCond vevent_queue_condition;
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void vevent_queue_init(void)
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{
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qemu_mutex_init(&vevent_queue_lock);
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qemu_cond_init(&vevent_queue_condition);
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vevent_queue_head = vevent_queue_tail = NULL;
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}
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void
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vevent_queue_vevent(VEvent *vevent)
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{
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vevent->next = NULL;
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qemu_mutex_lock(&vevent_queue_lock);
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if (vevent_queue_head) {
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assert(vevent_queue_tail);
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vevent_queue_tail->next = vevent;
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} else {
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vevent_queue_head = vevent;
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}
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vevent_queue_tail = vevent;
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qemu_cond_signal(&vevent_queue_condition);
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qemu_mutex_unlock(&vevent_queue_lock);
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}
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/* must have lock */
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static VEvent *
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vevent_dequeue_vevent(void)
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{
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VEvent *vevent = NULL;
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if (vevent_queue_head) {
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vevent = vevent_queue_head;
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vevent_queue_head = vevent->next;
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vevent->next = NULL;
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}
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return vevent;
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}
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VEvent *vevent_wait_next_vevent(void)
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{
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VEvent *vevent;
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qemu_mutex_lock(&vevent_queue_lock);
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while ((vevent = vevent_dequeue_vevent()) == NULL) {
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qemu_cond_wait(&vevent_queue_condition, &vevent_queue_lock);
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}
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qemu_mutex_unlock(&vevent_queue_lock);
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return vevent;
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}
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VEvent *vevent_get_next_vevent(void)
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{
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VEvent *vevent;
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qemu_mutex_lock(&vevent_queue_lock);
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vevent = vevent_dequeue_vevent();
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qemu_mutex_unlock(&vevent_queue_lock);
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return vevent;
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}
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