/* Return a shvarFile for this interface, taking into account one level of
* inheritance (eeewww). */
static shvarFile *
shvarfilesGet(const char *interfaceName) {
shvarFile *ifcfg = NULL;
char ifcfgName[PATH_MAX];
char *ifcfgParentDiff = NULL;
/* Start with the basic configuration. */
snprintf(ifcfgName, sizeof(ifcfgName), "%s%s", IFCFGPREFIX, interfaceName);
ifcfg = svNewFile(ifcfgName);
if (ifcfg == NULL)
return NULL;
/* Do we have a parent interface (i.e., for ppp0-blah, ppp0) to inherit? */
ifcfgParentDiff = strchr(ifcfgName + sizeof(IFCFGPREFIX), '-');
if (ifcfgParentDiff) {
*ifcfgParentDiff = '\0';
ifcfg->parent = svNewFile(ifcfgName);
}
/* This is very unclean, but we have to close the shvar descriptors in
* case they've been numbered STDOUT_FILENO or STDERR_FILENO, which would
* be disastrous if inherited by a child process. */
close (ifcfg->fd);
ifcfg->fd = 0;
if (ifcfg->parent) {
close (ifcfg->parent->fd);
ifcfg->parent->fd = 0;
}
return ifcfg;
}
shvarFile *
utils_get_extra_ifcfg (const char *parent, const char *tag, gboolean should_create)
{
shvarFile *ifcfg = NULL;
char *path;
path = utils_get_extra_path (parent, tag);
if (!path)
return NULL;
if (should_create && !g_file_test (path, G_FILE_TEST_EXISTS))
ifcfg = svCreateFile (path);
if (!ifcfg)
ifcfg = svNewFile (path);
g_free (path);
return ifcfg;
}
