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Do not attempt to free() the application's environment, which is was

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not dynamically allocated.  Instead, use a private variable to store
the environment array, which is used when we exec applications.
This commit is contained in:
Eric Andersen 2005-04-27 11:44:11 +00:00
parent fef32b570b
commit 70a5a1abde
1 changed files with 8 additions and 10 deletions
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18
networking/ifupdown.c
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@ -150,9 +150,7 @@ struct interfaces_file_t
static char no_act = 0;
static char verbose = 0;
#ifndef __USE_GNU
static char **environ = NULL;
#endif
static char **__myenviron = NULL;
#ifdef CONFIG_FEATURE_IFUPDOWN_IP
@ -963,16 +961,16 @@ static void set_environ(struct interface_defn_t *iface, char *mode)
const int n_env_entries = iface->n_options + 5;
char **ppch;
if (environ != NULL) {
for (ppch = environ; *ppch; ppch++) {
if (__myenviron != NULL) {
for (ppch = __myenviron; *ppch; ppch++) {
free(*ppch);
*ppch = NULL;
}
free(environ);
environ = NULL;
free(__myenviron);
__myenviron = NULL;
}
environ = xmalloc(sizeof(char *) * (n_env_entries + 1 /* for final NULL */ ));
environend = environ;
__myenviron = xmalloc(sizeof(char *) * (n_env_entries + 1 /* for final NULL */ ));
environend = __myenviron;
*environend = NULL;
for (i = 0; i < iface->n_options; i++) {
@ -1012,7 +1010,7 @@ static int doit(char *str)
case -1: /* failure */
return 0;
case 0: /* child */
execle(DEFAULT_SHELL, DEFAULT_SHELL, "-c", str, NULL, environ);
execle(DEFAULT_SHELL, DEFAULT_SHELL, "-c", str, NULL, __myenviron);
exit(127);
}
waitpid(child, &status, 0);