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scd: Small clean up for card access.

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* scd/app.c (app_get_challenge): Remove the check to ref_count.
* scd/command.c (send_client_notifications): Update comments.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2021-07-22 11:22:47 +09:00
parent 50ad29f9a7
commit 5c8124b8b9
2 changed files with 11 additions and 10 deletions
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9
scd/app.c
View File

@ -2204,18 +2204,11 @@ gpg_error_t
app_get_challenge (card_t card, ctrl_t ctrl,
size_t nbytes, unsigned char *buffer)
{
gpg_error_t err;
(void)ctrl;
if (!nbytes || !buffer)
return gpg_error (GPG_ERR_INV_VALUE);
if (!card->ref_count)
err = gpg_error (GPG_ERR_CARD_NOT_INITIALIZED);
else
err = iso7816_get_challenge (card->slot, nbytes, buffer);
return err;
return iso7816_get_challenge (card->slot, nbytes, buffer);
}

12
scd/command.c
View File

@ -2851,8 +2851,16 @@ popup_prompt (void *opaque, int on)
}
/* Helper to send the clients a status change notification. Note that
* this function assumes that APP is already locked. */
/*
* Helper to send the clients a status change notification.
*
* When it's removal of card, this function also clean up all
* references by ctrl->card_ctx of all sessions.
*
* Note that this function assumes that all accesses to cards and
* applications are locked. By the mrsw-lock, it is guaranteed that
* no card/app is accessed, when this function is called..
*/
void
send_client_notifications (card_t card, int removal)
{