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e294acdba8
This confers an >10x speedup on t/z-t/cmd builds (12s -> 1.1s), gets rid of 23 redundant identical automake specs and gitignores, and groups the binaries with their common headers Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: John Kennedy <john.kennedy@delphix.com> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #13259
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright (c) 2013 by Delphix. All rights reserved.
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*/
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#include <stdio.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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int
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main(int argc, char *argv[])
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{
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int error, fd;
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struct stat statbuf;
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if (argc != 2) {
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(void) printf("Error: missing binary name.\n");
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(void) printf("Usage:\n\t%s <binary name>\n",
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argv[0]);
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return (1);
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}
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errno = 0;
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if ((fd = open(argv[1], O_RDONLY)) < 0) {
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error = errno;
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perror("open");
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return (error);
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}
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if (fstat(fd, &statbuf) < 0) {
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error = errno;
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perror("fstat");
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return (error);
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}
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if (mmap(0, statbuf.st_size,
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PROT_EXEC, MAP_SHARED, fd, 0) == MAP_FAILED) {
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error = errno;
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perror("mmap");
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return (error);
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}
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return (0);
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}
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