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scd: acquire lock in new_reader_slot.
* scd/apdu.c (new_reader_slot): Acquire lock.
(open_ct_reader, open_pcsc_reader_direct, open_pcsc_reader_wrapped)
(open_ccid_reader, open_rapdu_reader): Release lock.
(lock_slot, trylock_slot, unlock_slot): Move more to the top.
--
Fixes a test case of:
No libpcsclite1 installed.
Run gpg-agent
Run command "gpg-connect-agent learn /bye" with no card/token
Sometimes it fails: ERR 100663356 Not supported <SCD>
While it should be always: ERR 100663404 Card error <SCD>
(cherry picked from commit 4f557cb9c2ebe274d6aacc60a09cd919055d01ed)
Resolved conflicts:
scd/apdu.c: pth/npth changes. Move lock helpers to the top.
Take care of removed pcsc_no_service.
This commit is contained in:
Werner Koch
parent
8e9b1aa563
commit
9ab9f414fb
118
scd/apdu.c
118
scd/apdu.c
@ -373,9 +373,56 @@ static int pcsc_pinpad_modify (int slot, int class, int ins, int p0, int p1,
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Helper
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*/
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static int
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lock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_lock (&reader_table[slot].lock);
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if (err)
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{
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log_error ("failed to acquire apdu lock: %s\n", strerror (err));
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return SW_HOST_LOCKING_FAILED;
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}
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#endif /*USE_NPTH*/
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return 0;
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}
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static int
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trylock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_trylock (&reader_table[slot].lock);
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if (err == EBUSY)
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return SW_HOST_BUSY;
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else if (err)
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{
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log_error ("failed to acquire apdu lock: %s\n", strerror (err));
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return SW_HOST_LOCKING_FAILED;
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}
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#endif /*USE_NPTH*/
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return 0;
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}
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static void
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unlock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_unlock (&reader_table[slot].lock);
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if (err)
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log_error ("failed to release apdu lock: %s\n", strerror (errno));
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#endif /*USE_NPTH*/
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}
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/* Find an unused reader slot for PORTSTR and put it into the reader
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table. Return -1 on error or the index into the reader table. */
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table. Return -1 on error or the index into the reader table.
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Acquire slot's lock on successful return. Caller needs to unlock it. */
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static int
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new_reader_slot (void)
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{
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@ -404,6 +451,11 @@ new_reader_slot (void)
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reader_table[reader].lock_initialized = 1;
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}
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#endif /*USE_NPTH*/
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if (lock_slot (reader))
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{
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log_error ("error locking mutex: %s\n", strerror (errno));
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return -1;
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}
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reader_table[reader].connect_card = NULL;
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reader_table[reader].disconnect_card = NULL;
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reader_table[reader].close_reader = NULL;
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@ -692,6 +744,7 @@ open_ct_reader (int port)
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log_error ("apdu_open_ct_reader failed on port %d: %s\n",
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port, ct_error_string (rc));
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reader_table[reader].used = 0;
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unlock_slot (reader);
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return -1;
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}
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@ -713,6 +766,7 @@ open_ct_reader (int port)
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reader_table[reader].pinpad_modify = NULL;
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dump_reader_status (reader);
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unlock_slot (reader);
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return reader;
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}
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@ -1871,6 +1925,7 @@ open_pcsc_reader_direct (const char *portstr)
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log_error ("pcsc_establish_context failed: %s (0x%lx)\n",
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pcsc_error_string (err), err);
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reader_table[slot].used = 0;
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unlock_slot (slot);
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return -1;
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}
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@ -1884,6 +1939,7 @@ open_pcsc_reader_direct (const char *portstr)
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log_error ("error allocating memory for reader list\n");
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pcsc_release_context (reader_table[slot].pcsc.context);
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reader_table[slot].used = 0;
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unlock_slot (slot);
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return -1 /*SW_HOST_OUT_OF_CORE*/;
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}
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err = pcsc_list_readers (reader_table[slot].pcsc.context,
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@ -1896,6 +1952,7 @@ open_pcsc_reader_direct (const char *portstr)
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pcsc_release_context (reader_table[slot].pcsc.context);
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reader_table[slot].used = 0;
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xfree (list);
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unlock_slot (slot);
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return -1;
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}
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@ -1921,6 +1978,7 @@ open_pcsc_reader_direct (const char *portstr)
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log_error ("error allocating memory for reader name\n");
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pcsc_release_context (reader_table[slot].pcsc.context);
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reader_table[slot].used = 0;
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unlock_slot (slot);
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return -1;
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}
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strcpy (reader_table[slot].rdrname, portstr? portstr : list);
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@ -1940,6 +1998,7 @@ open_pcsc_reader_direct (const char *portstr)
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reader_table[slot].dump_status_reader = dump_pcsc_reader_status;
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dump_reader_status (slot);
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unlock_slot (slot);
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return slot;
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}
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#endif /*!NEED_PCSC_WRAPPER */
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@ -1986,6 +2045,7 @@ open_pcsc_reader_wrapped (const char *portstr)
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{
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log_error ("error creating a pipe: %s\n", strerror (errno));
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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if (pipe (wp) == -1)
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@ -1994,6 +2054,7 @@ open_pcsc_reader_wrapped (const char *portstr)
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close (rp[0]);
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close (rp[1]);
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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@ -2006,6 +2067,7 @@ open_pcsc_reader_wrapped (const char *portstr)
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close (wp[0]);
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close (wp[1]);
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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slotp->pcsc.pid = pid;
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@ -2142,6 +2204,7 @@ open_pcsc_reader_wrapped (const char *portstr)
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pcsc_get_status (slot, &dummy_status);
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dump_reader_status (slot);
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unlock_slot (slot);
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return slot;
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command_failed:
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@ -2153,6 +2216,7 @@ open_pcsc_reader_wrapped (const char *portstr)
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kill (slotp->pcsc.pid, SIGTERM);
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slotp->pcsc.pid = (pid_t)(-1);
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slotp->used = 0;
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unlock_slot (slot);
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/* There is no way to return SW. */
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return -1;
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@ -2541,6 +2605,7 @@ open_ccid_reader (const char *portstr)
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if (err)
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{
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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@ -2575,6 +2640,7 @@ open_ccid_reader (const char *portstr)
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reader_table[slot].is_t0 = 0;
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dump_reader_status (slot);
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unlock_slot (slot);
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return slot;
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}
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@ -2813,6 +2879,7 @@ open_rapdu_reader (int portno,
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if (!slotp->rapdu.handle)
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{
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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@ -2867,12 +2934,14 @@ open_rapdu_reader (int portno,
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dump_reader_status (slot);
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rapdu_msg_release (msg);
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unlock_slot (slot);
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return slot;
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failure:
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rapdu_msg_release (msg);
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rapdu_release (slotp->rapdu.handle);
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slotp->used = 0;
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unlock_slot (slot);
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return -1;
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}
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@ -2885,53 +2954,6 @@ open_rapdu_reader (int portno,
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*/
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static int
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lock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_lock (&reader_table[slot].lock);
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if (err)
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{
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log_error ("failed to acquire apdu lock: %s\n", strerror (err));
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return SW_HOST_LOCKING_FAILED;
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}
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#endif /*USE_NPTH*/
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return 0;
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}
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static int
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trylock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_trylock (&reader_table[slot].lock);
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if (err == EBUSY)
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return SW_HOST_BUSY;
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else if (err)
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{
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log_error ("failed to acquire apdu lock: %s\n", strerror (err));
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return SW_HOST_LOCKING_FAILED;
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}
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#endif /*USE_NPTH*/
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return 0;
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}
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static void
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unlock_slot (int slot)
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{
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#ifdef USE_NPTH
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int err;
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err = npth_mutex_unlock (&reader_table[slot].lock);
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if (err)
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log_error ("failed to release apdu lock: %s\n", strerror (errno));
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#endif /*USE_NPTH*/
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}
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/* Open the reader and return an internal slot number or -1 on
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error. If PORTSTR is NULL we default to a suitable port (for ctAPI:
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the first USB reader. For PC/SC the first listed reader). */
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