aboutsummaryrefslogtreecommitdiff
path: root/posix/tst-execvpe5.c
blob: b64f2b50b270d4d12e34639d9a5fd451c668b815 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/* General tests for execpve.
   Copyright (C) 2016-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wait.h>


/* Nonzero if the program gets called via `exec'.  */
static int restart;


#define CMDLINE_OPTIONS \
  { "restart", no_argument, &restart, 1 },

/* Prototype for our test function.  */
extern void do_prepare (int argc, char *argv[]);
extern int do_test (int argc, char *argv[]);

#include "../test-skeleton.c"

#define EXECVPE_KEY    "EXECVPE_ENV"
#define EXECVPE_VALUE  "execvpe_test"


static int
handle_restart (void)
{
  /* First check if only one variable is passed on execvpe.  */
  int env_count = 0;
  for (char **e = environ; *e != NULL; ++e)
    if (++env_count == INT_MAX)
      {
	printf ("Environment variable number overflow");
	exit (EXIT_FAILURE);
      }
  if (env_count != 1)
    {
      printf ("Wrong number of environment variables");
      exit (EXIT_FAILURE);
    }

  /* Check if the combinarion os "EXECVPE_ENV=execvpe_test"  */
  const char *env = getenv (EXECVPE_KEY);
  if (env == NULL)
    {
      printf ("Test environment variable not found");
      exit (EXIT_FAILURE);
    }

  if (strncmp (env, EXECVPE_VALUE, sizeof (EXECVPE_VALUE)))
    {
      printf ("Test environment variable with wrong value");
      exit (EXIT_FAILURE);
    }

  return 0;
}


int
do_test (int argc, char *argv[])
{
  pid_t pid;
  int status;

  /* We must have
     - one or four parameters left if called initially
       + path for ld.so		optional
       + "--library-path"	optional
       + the library path	optional
       + the application name

    if --enable-hardcoded-path-in-tests is used, just
      + the application name
  */

  if (restart)
    {
      if (argc != 1)
	{
	  printf ("Wrong number of arguments (%d) in restart\n", argc);
	  exit (EXIT_FAILURE);
	}

      return handle_restart ();
    }

  if (argc != 2 && argc != 5)
    {
      printf ("Wrong number of arguments (%d)\n", argc);
      exit (EXIT_FAILURE);
    }

  /* We want to test the `execvpe' function.  To do this we restart the
     program with an additional parameter.  */
  pid = fork ();
  if (pid == 0)
    {
      /* This is the child.  Construct the command line.  */

      /* We cast here to char* because the test itself does not modify neither
	 the argument nor the environment list.  */
      char *envs[] = { (char*)(EXECVPE_KEY "=" EXECVPE_VALUE), NULL };
      if (argc == 5)
	{
	  char *args[] = { argv[1], argv[2], argv[3], argv[4],
			   (char *) "--direct", (char *) "--restart", NULL };
	  execvpe (args[0], args, envs);
	}
      else
	{
	  char *args[] = { argv[0],
			   (char *) "--direct", (char *) "--restart", NULL };
	  execvpe (args[0], args, envs);
	}

      puts ("Cannot exec");
      exit (EXIT_FAILURE);
    }
  else if (pid == (pid_t) -1)
    {
      puts ("Cannot fork");
      return 1;
    }

  /* Wait for the child.  */
  if (waitpid (pid, &status, 0) != pid)
    {
      puts ("Wrong child");
      return 1;
    }

  if (WTERMSIG (status) != 0)
    {
      puts ("Child terminated incorrectly");
      return 1;
    }
  status = WEXITSTATUS (status);

  return status;
}