- Create sysctl nodes for AIO.
- Add POSIX defined system variables and constants of AIO_LISTIO_MAX and AIO_MAX values. Both with _POSIX_ASYNCHRONOUS_IO, provide them in sysconf(3) and getconf(1) interfaces. - Clean up sysconf(3) for handling sysctl nodes dynamically.
This commit is contained in:
rmind
parent
ab54f30196
commit
0994dd0691
@ -1,4 +1,4 @@
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/* $NetBSD: limits.h,v 1.23 2004/11/10 04:02:52 lukem Exp $ */
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/* $NetBSD: limits.h,v 1.24 2007/05/01 01:01:25 rmind Exp $ */
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/*
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* Copyright (c) 1988, 1993
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@ -38,6 +38,8 @@
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
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defined(_NETBSD_SOURCE)
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#define _POSIX_AIO_LISTIO_MAX 2
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#define _POSIX_AIO_MAX 1
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_LINK_MAX 8
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@ -1,4 +1,4 @@
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/* $NetBSD: sysconf.c,v 1.22 2006/11/25 21:40:04 christos Exp $ */
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/* $NetBSD: sysconf.c,v 1.23 2007/05/01 01:01:35 rmind Exp $ */
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/*-
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* Copyright (c) 1993
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@ -37,7 +37,7 @@
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#if 0
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static char sccsid[] = "@(#)sysconf.c 8.2 (Berkeley) 3/20/94";
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#else
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__RCSID("$NetBSD: sysconf.c,v 1.22 2006/11/25 21:40:04 christos Exp $");
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__RCSID("$NetBSD: sysconf.c,v 1.23 2007/05/01 01:01:35 rmind Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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@ -69,17 +69,20 @@ __weak_alias(sysconf,__sysconf)
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* less useful than returning up-to-date values, however.
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*/
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long
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sysconf(name)
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int name;
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sysconf(int name)
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{
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struct rlimit rl;
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size_t len;
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int mib[3], value;
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int mib[CTL_MAXNAME], value;
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unsigned int mib_len;
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struct clockinfo tmpclock;
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static int clk_tck;
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len = sizeof(value);
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/* Default length of the MIB */
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mib_len = 2;
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switch (name) {
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/* 1003.1 */
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@ -284,13 +287,25 @@ sysconf(name)
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mib[0] = CTL_KERN;
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mib[1] = KERN_SYSVIPC;
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mib[2] = KERN_SYSVIPC_SHM;
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if (sysctl(mib, 3, &value, &len, NULL, 0) == -1)
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return (-1);
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if (value == 0)
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return (-1);
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return (0);
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mib_len = 3;
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goto yesno;
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/* 1003.1-2001, XSI Option Group */
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case _SC_AIO_LISTIO_MAX:
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if (sysctlgetmibinfo("kern.aio_listio_max", &mib[0], &mib_len,
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NULL, NULL, NULL, SYSCTL_VERSION))
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return -1;
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break;
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case _SC_AIO_MAX:
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if (sysctlgetmibinfo("kern.aio_max", &mib[0], &mib_len,
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NULL, NULL, NULL, SYSCTL_VERSION))
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return -1;
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break;
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case _SC_ASYNCHRONOUS_IO:
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if (sysctlgetmibinfo("kern.posix_aio", &mib[0], &mib_len,
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NULL, NULL, NULL, SYSCTL_VERSION))
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return -1;
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goto yesno;
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case _SC_ATEXIT_MAX:
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mib[0] = CTL_USER;
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mib[1] = USER_ATEXIT_MAX;
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@ -302,7 +317,7 @@ sysconf(name)
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case _SC_GETPW_R_SIZE_MAX:
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return _GETPW_R_SIZE_MAX;
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yesno: if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
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yesno: if (sysctl(mib, mib_len, &value, &len, NULL, 0) == -1)
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return (-1);
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if (value == 0)
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return (-1);
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@ -313,5 +328,5 @@ yesno: if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
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errno = EINVAL;
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return (-1);
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}
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return (sysctl(mib, 2, &value, &len, NULL, 0) == -1 ? -1 : value);
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return (sysctl(mib, mib_len, &value, &len, NULL, 0) == -1 ? -1 : value);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: vfs_aio.c,v 1.1 2007/04/30 14:44:30 rmind Exp $ */
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/* $NetBSD: vfs_aio.c,v 1.2 2007/05/01 01:01:36 rmind Exp $ */
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/*
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* Copyright (c) 2007, Mindaugas Rasiukevicius <rmind at NetBSD org>
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@ -32,7 +32,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vfs_aio.c,v 1.1 2007/04/30 14:44:30 rmind Exp $");
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__KERNEL_RCSID(0, "$NetBSD: vfs_aio.c,v 1.2 2007/05/01 01:01:36 rmind Exp $");
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#include <sys/param.h>
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@ -49,6 +49,7 @@ __KERNEL_RCSID(0, "$NetBSD: vfs_aio.c,v 1.1 2007/04/30 14:44:30 rmind Exp $");
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/syscallargs.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/vnode.h>
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@ -940,6 +941,42 @@ err:
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return error;
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}
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/*
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* SysCtl
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*/
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SYSCTL_SETUP(sysctl_aio_setup, "sysctl aio setup")
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{
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "kern", NULL,
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NULL, 0, NULL, 0,
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CTL_KERN, CTL_EOL);
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
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CTLTYPE_INT, "posix_aio",
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SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
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"Asynchronous I/O option to which the "
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"system attempts to conform"),
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NULL, _POSIX_ASYNCHRONOUS_IO, NULL, 0,
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CTL_KERN, CTL_CREATE, CTL_EOL);
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
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CTLTYPE_INT, "aio_listio_max",
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SYSCTL_DESCR("Maximum number of asynchronous I/O "
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"operations in a single list I/O call"),
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NULL, AIO_LISTIO_MAX, NULL, 0,
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CTL_KERN, CTL_CREATE, CTL_EOL);
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
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CTLTYPE_INT, "aio_max",
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SYSCTL_DESCR("Maximum number of asynchronous I/O "
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"operations"),
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NULL, AIO_MAX, NULL, 0,
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CTL_KERN, CTL_CREATE, CTL_EOL);
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}
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/*
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* Debugging
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*/
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@ -1,4 +1,4 @@
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/* $NetBSD: unistd.h,v 1.36 2007/04/30 14:44:31 rmind Exp $ */
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/* $NetBSD: unistd.h,v 1.37 2007/05/01 01:01:36 rmind Exp $ */
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/*
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* Copyright (c) 1989, 1993
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@ -66,7 +66,7 @@
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/* chown requires appropriate privileges */
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#define _POSIX_CHOWN_RESTRICTED 1
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/* clock selection */
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#define _POSIX_CLOCK_SELECTION -1
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#define _POSIX_CLOCK_SELECTION -1
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/* too-long path components generate errors */
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#define _POSIX_NO_TRUNC 1
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/* may disable terminal special characters */
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#define _SC_READER_WRITER_LOCKS 46
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#define _SC_GETGR_R_SIZE_MAX 47
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#define _SC_GETPW_R_SIZE_MAX 48
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#define _SC_CLOCK_SELECTION 49
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#define _SC_CLOCK_SELECTION 49
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#define _SC_ASYNCHRONOUS_IO 50
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#define _SC_AIO_LISTIO_MAX 51
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#define _SC_AIO_MAX 52
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/* configurable system strings */
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#define _CS_PATH 1
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@ -1,4 +1,4 @@
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/* $NetBSD: getconf.c,v 1.26 2006/12/06 12:02:02 mjf Exp $ */
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/* $NetBSD: getconf.c,v 1.27 2007/05/01 01:01:37 rmind Exp $ */
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/*-
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* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
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@ -38,7 +38,7 @@
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: getconf.c,v 1.26 2006/12/06 12:02:02 mjf Exp $");
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__RCSID("$NetBSD: getconf.c,v 1.27 2007/05/01 01:01:37 rmind Exp $");
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#endif /* not lint */
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#include <err.h>
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@ -78,6 +78,8 @@ static const struct conf_variable conf_table[] =
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{ "POSIX2_VERSION", CONSTANT, _POSIX2_VERSION },
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/* POSIX.1 Minimum Values */
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{ "_POSIX_AIO_LISTIO_MAX", CONSTANT, _POSIX_AIO_LISTIO_MAX },
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{ "_POSIX_AIO_MAX", CONSTANT, _POSIX_AIO_MAX },
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{ "_POSIX_ARG_MAX", CONSTANT, _POSIX_ARG_MAX },
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{ "_POSIX_CHILD_MAX", CONSTANT, _POSIX_CHILD_MAX },
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{ "_POSIX_LINK_MAX", CONSTANT, _POSIX_LINK_MAX },
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{ "POSIX2_UPE", SYSCONF, _SC_2_UPE },
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/* POSIX.1 Configurable System Variables */
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{ "AIO_LISTIO_MAX", SYSCONF, _SC_AIO_LISTIO_MAX },
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{ "AIO_MAX", SYSCONF, _SC_AIO_MAX },
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{ "ARG_MAX", SYSCONF, _SC_ARG_MAX },
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{ "CHILD_MAX", SYSCONF, _SC_CHILD_MAX },
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{ "CLK_TCK", SYSCONF, _SC_CLK_TCK },
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/* POSIX.1b Configurable System Variables */
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{ "PAGESIZE", SYSCONF, _SC_PAGESIZE },
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{ "_POSIX_ASYNCHRONOUS_IO", SYSCONF, _SC_ASYNCHRONOUS_IO },
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{ "_POSIX_FSYNC", SYSCONF, _SC_FSYNC },
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{ "_POSIX_MAPPED_FILES", SYSCONF, _SC_MAPPED_FILES },
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{ "_POSIX_MEMLOCK", SYSCONF, _SC_MEMLOCK },
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