Date: Sat, 14 Nov 2015 23:07:38 +0000 (UTC) From: Craig Rodrigues <rodrigc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r290835 - head/lib/libopenbsd Message-ID: <201511142307.tAEN7cZN087586@repo.freebsd.org>
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Author: rodrigc Date: Sat Nov 14 23:07:38 2015 New Revision: 290835 URL: https://svnweb.freebsd.org/changeset/base/290835 Log: Implemtn getdtablecount() to count open file descriptors for current process. Use underlying sysctl implemented by mjg in r290473. PR: 194985 Reviewed by: bapt, mjg Differential Revision: https://reviews.freebsd.org/D4084 Added: head/lib/libopenbsd/getdtablecount.c (contents, props changed) head/lib/libopenbsd/unistd.h (contents, props changed) Modified: head/lib/libopenbsd/Makefile Modified: head/lib/libopenbsd/Makefile ============================================================================== --- head/lib/libopenbsd/Makefile Sat Nov 14 22:46:50 2015 (r290834) +++ head/lib/libopenbsd/Makefile Sat Nov 14 23:07:38 2015 (r290835) @@ -1,9 +1,12 @@ # $FreeBSD$ LIB= openbsd -SRCS= ohash.c +SRCS= getdtablecount.c \ + ohash.c INTERNALLIB= +CFLAGS+= -I${.CURDIR} + WARNS= 3 .include <bsd.lib.mk> Added: head/lib/libopenbsd/getdtablecount.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libopenbsd/getdtablecount.c Sat Nov 14 23:07:38 2015 (r290835) @@ -0,0 +1,58 @@ +/*- + * Copyright (c) 2015 Craig Rodrigues + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/sysctl.h> +#include <stddef.h> + +int getdtablecount(void); + +/* + * Return the count of open file descriptors for this process. + * + */ +int +getdtablecount(void) +{ + int mib[4]; + int error; + int nfds; + size_t len; + + len = sizeof(nfds); + mib[0] = CTL_KERN; + mib[1] = KERN_PROC; + mib[2] = KERN_PROC_NFDS; + mib[3] = 0; + + error = sysctl(mib, 4, &nfds, &len, NULL, 0); + if (error) + return (-1); + return (nfds); +} Added: head/lib/libopenbsd/unistd.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libopenbsd/unistd.h Sat Nov 14 23:07:38 2015 (r290835) @@ -0,0 +1,36 @@ +/*- + * Copyright (c) 2015 Craig Rodrigues + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LIBOPENBSD_UNISTD_H_ +#define _LIBOPENBSD_UNISTD_H_ + +#include_next <unistd.h> + +int getdtablecount(void); + +#endif
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