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/* General tests for execpve.
Copyright (C) 2016-2025 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;
}
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