The Tor Browser: netwerk/sctp/src/netinet/sctp

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /*-

     2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.

     3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.

     4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions

     8  * are met:

     9  * 1. Redistributions of source code must retain the above copyright

    10  *    notice, this list of conditions and the following disclaimer.

    11  * 2. Redistributions in binary form must reproduce the above copyright

    12  *    notice, this list of conditions and the following disclaimer in the

    13  *    documentation and/or other materials provided with the distribution.

    14  * 3. Neither the name of the project nor the names of its contributors

    15  *    may be used to endorse or promote products derived from this software

    16  *    without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND

    19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE

    22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    28  * SUCH DAMAGE.

    29  */

    31 #ifdef __FreeBSD__

    32 #include <sys/cdefs.h>

    33 __FBSDID("$FreeBSD$");

    34 #endif

    36 #ifndef _NETINET_SCTP_CALLOUT_

    37 #define _NETINET_SCTP_CALLOUT_

    39 /*

    40  * NOTE: the following MACROS are required for locking the callout

    41  * queue along with a lock/mutex in the OS specific headers and

    42  * implementation files::

    43  * - SCTP_TIMERQ_LOCK()

    44  * - SCTP_TIMERQ_UNLOCK()

    45  * - SCTP_TIMERQ_LOCK_INIT()

    46  * - SCTP_TIMERQ_LOCK_DESTROY()

    47  */

    49 #define _SCTP_NEEDS_CALLOUT_ 1

    51 #define SCTP_TICKS_PER_FASTTIMO 20	/* called about every 20ms */

    53 #if defined(__Userspace__)

    54 #if defined(__Userspace_os_Windows)

    55 #define SCTP_TIMERQ_LOCK()          EnterCriticalSection(&SCTP_BASE_VAR(timer_mtx))

    56 #define SCTP_TIMERQ_UNLOCK()        LeaveCriticalSection(&SCTP_BASE_VAR(timer_mtx))

    57 #define SCTP_TIMERQ_LOCK_INIT()     InitializeCriticalSection(&SCTP_BASE_VAR(timer_mtx))

    58 #define SCTP_TIMERQ_LOCK_DESTROY()  DeleteCriticalSection(&SCTP_BASE_VAR(timer_mtx))

    59 #else

    60 #define SCTP_TIMERQ_LOCK()          (void)pthread_mutex_lock(&SCTP_BASE_VAR(timer_mtx))

    61 #define SCTP_TIMERQ_UNLOCK()        (void)pthread_mutex_unlock(&SCTP_BASE_VAR(timer_mtx))

    62 #define SCTP_TIMERQ_LOCK_INIT()     (void)pthread_mutex_init(&SCTP_BASE_VAR(timer_mtx), NULL)

    63 #define SCTP_TIMERQ_LOCK_DESTROY()  (void)pthread_mutex_destroy(&SCTP_BASE_VAR(timer_mtx))

    64 #endif

    66 extern int ticks;

    67 #endif

    69 TAILQ_HEAD(calloutlist, sctp_callout);

    71 struct sctp_callout {

    72 	TAILQ_ENTRY(sctp_callout) tqe;

    73 	int c_time;		/* ticks to the event */

    74 	void *c_arg;		/* function argument */

    75 	void (*c_func)(void *);	/* function to call */

    76 	int c_flags;		/* state of this entry */

    77 };

    78 typedef struct sctp_callout sctp_os_timer_t;

    80 #define	SCTP_CALLOUT_ACTIVE	0x0002	/* callout is currently active */

    81 #define	SCTP_CALLOUT_PENDING	0x0004	/* callout is waiting for timeout */

    83 void sctp_os_timer_init(sctp_os_timer_t *tmr);

    84 void sctp_os_timer_start(sctp_os_timer_t *, int, void (*)(void *), void *);

    85 int sctp_os_timer_stop(sctp_os_timer_t *);

    87 #define SCTP_OS_TIMER_INIT	sctp_os_timer_init

    88 #define SCTP_OS_TIMER_START	sctp_os_timer_start

    89 #define SCTP_OS_TIMER_STOP	sctp_os_timer_stop

    90 /* MT FIXME: Is the following correct? */

    91 #define SCTP_OS_TIMER_STOP_DRAIN SCTP_OS_TIMER_STOP

    92 #define	SCTP_OS_TIMER_PENDING(tmr) ((tmr)->c_flags & SCTP_CALLOUT_PENDING)

    93 #define	SCTP_OS_TIMER_ACTIVE(tmr) ((tmr)->c_flags & SCTP_CALLOUT_ACTIVE)

    94 #define	SCTP_OS_TIMER_DEACTIVATE(tmr) ((tmr)->c_flags &= ~SCTP_CALLOUT_ACTIVE)

    96 #if defined(__Userspace__)

    97 void sctp_start_timer(void);

    98 #endif

    99 #if defined(__APPLE__)

   100 void sctp_timeout(void *);

   101 #endif

   103 #endif

The Tor Browser / file revision

netwerk/sctp/src/netinet/sctp_callout.h@97036ab72558

netwerk/sctp/src/netinet/sctp_callout.h