tests/lib/libc/gen/posix_spawn/h_fileactions.c

   1 /* $NetBSD: h_fileactions.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles Zhang <charles@NetBSD.org> and
   9  * Martin Husemann <martin@NetBSD.org>.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <unistd.h>
  37 #include <errno.h>
  38 #include <sys/stat.h>
  39
  40 #define BUFSIZE 16
  41
  42 /*
  43  * This checks (hardcoded) the assumptions that are setup from the
  44  * main test program via posix spawn file actions.
  45  * Program exits with EXIT_SUCCESS or EXIT_FAILURE accordingly
  46  * (and does some stderr diagnostics in case of errors).
  47  */
  48 int
  49 main(int argc, char **argv)
  50 {
  51         int res = EXIT_SUCCESS;
  52         char buf[BUFSIZE];
  53         struct stat sb0, sb1;
  54
  55         strcpy(buf, "test...");
  56         /* file desc 3 should be closed via addclose */
  57         if (read(3, buf, BUFSIZE) != -1 || errno != EBADF) {
  58                 fprintf(stderr, "%s: filedesc 3 is not closed\n",
  59                     getprogname());
  60                 res = EXIT_FAILURE;
  61         }
  62         /* file desc 4 should be closed via closeonexec */
  63         if (read(4, buf, BUFSIZE) != -1 || errno != EBADF) {
  64                 fprintf(stderr, "%s: filedesc 4 is not closed\n",
  65                     getprogname());
  66                 res = EXIT_FAILURE;
  67         }
  68         /* file desc 5 remains open */
  69         if (write(5, buf, BUFSIZE) <= 0) {
  70                 fprintf(stderr, "%s: could not write to filedesc 5\n",
  71                     getprogname());
  72                 res = EXIT_FAILURE;
  73         }
  74         /* file desc 6 should be open (via addopen) */
  75         if (write(6, buf, BUFSIZE) <= 0) {
  76                 fprintf(stderr, "%s: could not write to filedesc 6\n",
  77                     getprogname());
  78                 res = EXIT_FAILURE;
  79         }
  80         /* file desc 7 should refer to stdout */
  81         fflush(stdout);
  82         if (fstat(fileno(stdout), &sb0) != 0) {
  83                 fprintf(stderr, "%s: could not fstat stdout\n",
  84                     getprogname());
  85                 res = EXIT_FAILURE;
  86         }
  87         if (fstat(7, &sb1) != 0) {
  88                 fprintf(stderr, "%s: could not fstat filedesc 7\n",
  89                     getprogname());
  90                 res = EXIT_FAILURE;
  91         }
  92         if (write(7, buf, strlen(buf)) <= 0) {
  93                 fprintf(stderr, "%s: could not write to filedesc 7\n",
  94                     getprogname());
  95                 res = EXIT_FAILURE;
  96         }
  97         if (memcmp(&sb0, &sb1, sizeof sb0) != 0) {
  98                 fprintf(stderr, "%s: stat results differ\n", getprogname());
  99                 res = EXIT_FAILURE;
 100         }
 101
 102         return res;
 103 }
 104