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/* Test of execvpe().
Copyright (C) 2020-2021 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2020. */
#include <config.h>
/* Specification. */
#include <unistd.h>
#include "signature.h"
SIGNATURE_CHECK (execvpe, int, (const char *, char * const *, char * const *));
#include <stdio.h>
#include <string.h>
/* Looks up the NAME=VALUE assignment among the environment variables.
Returns it, or NULL if not found. */
static const char *
get_environ_assignment (const char *name)
{
size_t name_len = strlen (name);
char **p;
for (p = environ; *p != NULL; p++)
{
const char *assignment = *p;
if (strncmp (assignment, name, name_len) == 0
&& assignment[name_len] == '=')
return assignment;
}
return NULL;
}
/* Creates a minimal environment. */
static void
create_minimal_env (const char *env[5])
{
const char **p = env;
*p++ =
#ifdef __CYGWIN__
/* The Cygwin DLLs needed by the program are in /bin. */
"PATH=.:/bin";
#else
"PATH=.";
#endif
*p = get_environ_assignment ("QEMU_LD_PREFIX");
if (*p != NULL)
p++;
*p = get_environ_assignment ("QEMU_CPU");
if (*p != NULL)
p++;
*p++ = "Hommingberg=Gepardenforelle";
*p = NULL;
}
int
main ()
{
const char *progname = "test-exec-child";
const char *argv[12] =
{
progname,
"abc def",
"abc\"def\"ghi",
"xyz\"",
"abc\\def\\ghi",
"xyz\\",
"???",
"***",
"",
"foo",
"",
NULL
};
const char *env[5];
create_minimal_env (env);
execvpe (progname, (char * const *) argv, (char * const *) env);
perror ("execvpe");
return 1;
}
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