static void sysctl_dots_to_slashes(char *name)
{
- char *cptr, *last_good, *end;
+ char *cptr, *last_good, *end, *slash;
char end_ch;
+ end = strchrnul(name, '=');
+
+ slash = strchrnul(name, '/');
+ if (slash < end
+ && strchrnul(name, '.') < slash
+ ) {
+ /* There are both dots and slashes, and 1st dot is
+ * before 1st slash.
+ * (IOW: not raw, unmangled a/b/c.d format)
+ *
+ * procps supports this syntax for names with dots:
+ * net.ipv4.conf.eth0/100.mc_forwarding
+ * (dots and slashes are simply swapped)
+ */
+ while (end != name) {
+ end--;
+ if (*end == '.') *end = '/';
+ else if (*end == '/') *end = '.';
+ }
+ return;
+ }
+ /* else: use our old behavior: */
+
/* Convert minimum number of '.' to '/' so that
* we end up with existing file's name.
*
*
* To set up testing: modprobe 8021q; vconfig add eth0 100
*/
- end = strchrnul(name, '=');
end_ch = *end;
*end = '.'; /* trick the loop into trying full name too */
while (*cptr) {
if (*cptr == '/')
*cptr = '.';
+ else if (*cptr == '.')
+ *cptr = '/';
cptr++;
}