The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/posix4/posix4_mib.c

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    1 /*-
    2  * Copyright (c) 1998
    3  *      HD Associates, Inc.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by HD Associates, Inc
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/6.0/sys/posix4/posix4_mib.c 138290 2004-12-01 23:16:38Z phk $");
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/queue.h>
   40 #include <sys/sysctl.h>
   41 #include <sys/vnode.h>
   42 #include <posix4/posix4.h>
   43 
   44 static int facility[CTL_P1003_1B_MAXID - 1];
   45 static int facility_initialized[CTL_P1003_1B_MAXID - 1];
   46 
   47 /* OID_AUTO isn't working with sysconf(3).  I guess I'd have to
   48  * modify it to do a lookup by name from the index.
   49  * For now I've left it a top-level sysctl.
   50  */
   51 
   52 #if 1
   53 
   54 SYSCTL_DECL(_p1003_1b);
   55 
   56 #define P1B_SYSCTL(num, name)  \
   57 SYSCTL_INT(_p1003_1b, num, \
   58         name, CTLFLAG_RD, facility + num - 1, 0, "");
   59 
   60 #else
   61 
   62 SYSCTL_DECL(_kern_p1003_1b);
   63 
   64 #define P1B_SYSCTL(num, name)  \
   65 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, \
   66         name, CTLFLAG_RD, facility + num - 1, 0, "");
   67 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
   68 
   69 #endif
   70 
   71 SYSCTL_INT(_p1003_1b, CTL_P1003_1B_ASYNCHRONOUS_IO, \
   72         asynchronous_io, CTLFLAG_RD, &async_io_version, 0, "");
   73 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
   74 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
   75 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
   76 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
   77 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
   78 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
   79 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
   80 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
   81 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
   82 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
   83 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
   84 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
   85 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
   86 P1B_SYSCTL(CTL_P1003_1B_AIO_LISTIO_MAX, aio_listio_max);
   87 P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max);
   88 P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max);
   89 P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max);
   90 P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max);
   91 P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize);
   92 P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max);
   93 P1B_SYSCTL(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max);
   94 P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max);
   95 P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max);
   96 P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max);
   97 
   98 #define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID)
   99 
  100 /* p31b_setcfg: Set the configuration
  101  */
  102 void
  103 p31b_setcfg(int num, int value)
  104 {
  105 
  106         if (P31B_VALID(num)) {
  107                 facility[num - 1] = value;
  108                 facility_initialized[num - 1] = 1;
  109         }
  110 }
  111 
  112 int
  113 p31b_getcfg(int num)
  114 {
  115 
  116         if (P31B_VALID(num))
  117                 return (facility[num - 1]);
  118         return (0);
  119 }
  120 
  121 int
  122 p31b_iscfg(int num)
  123 {
  124 
  125         if (P31B_VALID(num))
  126                 return (facility_initialized[num - 1]);
  127         return (0);
  128 }
  129 
  130 /*
  131  * Turn on indications for standard (non-configurable) kernel features.
  132  */
  133 static void
  134 p31b_set_standard(void *dummy)
  135 {
  136         /* ??? p31b_setcfg(CTL_P1003_1B_FSYNC, 1); */
  137         p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 1);
  138         p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 1);
  139         p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE);
  140         if (!p31b_iscfg(CTL_P1003_1B_AIO_LISTIO_MAX))
  141                 p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, -1);
  142         if (!p31b_iscfg(CTL_P1003_1B_AIO_MAX))
  143                 p31b_setcfg(CTL_P1003_1B_AIO_MAX, -1);
  144         if (!p31b_iscfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX))
  145                 p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, -1);
  146 }
  147 
  148 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard, 
  149         0);
  150 

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