elf/tst-audit25b.c

   1 /* Check LD_AUDIT and LD_BIND_NOW.
   2    Copyright (C) 2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <limits.h>
  22 #include <inttypes.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include <support/capture_subprocess.h>
  26 #include <support/check.h>
  27 #include <support/xstdio.h>
  28 #include <support/support.h>
  29 #include <sys/auxv.h>
  30
  31 static int restart;
  32 #define CMDLINE_OPTIONS \
  33   { "restart", no_argument, &restart, 1 },
  34
  35 void tst_audit25mod1_func1 (void);
  36 void tst_audit25mod1_func2 (void);
  37 void tst_audit25mod2_func1 (void);
  38 void tst_audit25mod2_func2 (void);
  39
  40 static int
  41 handle_restart (void)
  42 {
  43   tst_audit25mod1_func1 ();
  44   tst_audit25mod1_func2 ();
  45   tst_audit25mod2_func1 ();
  46   tst_audit25mod2_func2 ();
  47
  48   return 0;
  49 }
  50
  51 static int
  52 do_test (int argc, char *argv[])
  53 {
  54   /* We must have either:
  55      - One or four parameters left if called initially:
  56        + path to ld.so         optional
  57        + "--library-path"      optional
  58        + the library path      optional
  59        + the application name  */
  60
  61   if (restart)
  62     return handle_restart ();
  63
  64   setenv ("LD_AUDIT", "tst-auditmod25.so", 0);
  65
  66   char *spargv[9];
  67   int i = 0;
  68   for (; i < argc - 1; i++)
  69     spargv[i] = argv[i + 1];
  70   spargv[i++] = (char *) "--direct";
  71   spargv[i++] = (char *) "--restart";
  72   spargv[i] = NULL;
  73
  74   {
  75     struct support_capture_subprocess result
  76       = support_capture_subprogram (spargv[0], spargv);
  77     support_capture_subprocess_check (&result, "tst-audit25a", 0,
  78                                       sc_allow_stderr);
  79
  80     /* tst-audit25a and tst-audit25mod1 are built with -Wl,-z,now, but
  81        tst-audit25mod2 is built with -Wl,-z,lazy.  So only
  82        tst_audit25mod4_func1 (called by tst_audit25mod2_func1) should not
  83        have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT.  */
  84     TEST_COMPARE_STRING (result.err.buffer,
  85                          "la_symbind: tst_audit25mod3_func1 1\n"
  86                          "la_symbind: tst_audit25mod1_func1 1\n"
  87                          "la_symbind: tst_audit25mod2_func1 1\n"
  88                          "la_symbind: tst_audit25mod1_func2 1\n"
  89                          "la_symbind: tst_audit25mod2_func2 1\n"
  90                          "la_symbind: tst_audit25mod4_func1 0\n");
  91
  92     support_capture_subprocess_free (&result);
  93   }
  94
  95   {
  96     setenv ("LD_BIND_NOW", "1", 0);
  97     struct support_capture_subprocess result
  98       = support_capture_subprogram (spargv[0], spargv);
  99     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 100                                       sc_allow_stderr);
 101
 102     /* With LD_BIND_NOW all symbols are expected to have
 103        LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT.  Also the resolution
 104        order is done in breadth-first order.  */
 105     TEST_COMPARE_STRING (result.err.buffer,
 106                          "la_symbind: tst_audit25mod4_func1 1\n"
 107                          "la_symbind: tst_audit25mod3_func1 1\n"
 108                          "la_symbind: tst_audit25mod1_func1 1\n"
 109                          "la_symbind: tst_audit25mod2_func1 1\n"
 110                          "la_symbind: tst_audit25mod1_func2 1\n"
 111                          "la_symbind: tst_audit25mod2_func2 1\n");
 112
 113     support_capture_subprocess_free (&result);
 114   }
 115
 116   return 0;
 117 }
 118
 119 #define TEST_FUNCTION_ARGV do_test
 120 #include <support/test-driver.c>