mmap_exec.c

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    1 /*
    2  * CDDL HEADER START
    3  *
    4  * The contents of this file are subject to the terms of the
    5  * Common Development and Distribution License (the "License").
    6  * You may not use this file except in compliance with the License.
    7  *
    8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
    9  * or https://opensource.org/licenses/CDDL-1.0.
   10  * See the License for the specific language governing permissions
   11  * and limitations under the License.
   12  *
   13  * When distributing Covered Code, include this CDDL HEADER in each
   14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   15  * If applicable, add the following below this CDDL HEADER, with the
   16  * fields enclosed by brackets "[]" replaced with your own identifying
   17  * information: Portions Copyright [yyyy] [name of copyright owner]
   18  *
   19  * CDDL HEADER END
   20  */
   21 
   22 /*
   23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   24  * Use is subject to license terms.
   25  */
   26 
   27 /*
   28  * Copyright (c) 2013 by Delphix. All rights reserved.
   29  */
   30 
   31 #include <stdio.h>
   32 #include <sys/stat.h>
   33 #include <fcntl.h>
   34 #include <sys/types.h>
   35 #include <sys/mman.h>
   36 #include <errno.h>
   37 
   38 int
   39 main(int argc, char *argv[])
   40 {
   41         int error, fd;
   42         struct stat statbuf;
   43 
   44         if (argc != 2) {
   45                 (void) printf("Error: missing binary name.\n");
   46                 (void) printf("Usage:\n\t%s <binary name>\n",
   47                     argv[0]);
   48                 return (1);
   49         }
   50 
   51         errno = 0;
   52 
   53         if ((fd = open(argv[1], O_RDONLY)) < 0) {
   54                 error = errno;
   55                 perror("open");
   56                 return (error);
   57         }
   58         if (fstat(fd, &statbuf) < 0) {
   59                 error = errno;
   60                 perror("fstat");
   61                 return (error);
   62         }
   63 
   64         if (mmap(0, statbuf.st_size,
   65             PROT_EXEC, MAP_SHARED, fd, 0) == MAP_FAILED) {
   66                 error = errno;
   67                 perror("mmap");
   68                 return (error);
   69         }
   70 
   71         return (0);
   72 }

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/tests/zfs-tests/cmd/mmap_exec.c

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/tests/zfs-tests/cmd/mmap_exec.c