#define STATE_2ND_HALF 2
/* Parse a chmod-style argument, and break it down into one or more AND/OR
- * pairs in a linked list. We use a state machine to walk through the
- * options. */
+ * pairs in a linked list. We return a pointer to new items on succcess
+ * (appending the items to the specified list), or NULL on error. */
struct chmod_mode_struct *parse_chmod(const char *modestr,
- struct chmod_mode_struct *append_to)
+ struct chmod_mode_struct **root_mode_ptr)
{
int state = STATE_1ST_HALF;
int where = 0, what = 0, op = 0, topbits = 0, topoct = 0, flags = 0;
return NULL;
}
- if (append_to) {
- for (prev_mode = append_to; prev_mode->next; )
- prev_mode = prev_mode->next;
- prev_mode->next = first_mode;
- return append_to;
+ if (!(curr_mode = *root_mode_ptr))
+ *root_mode_ptr = first_mode;
+ else {
+ while (curr_mode->next)
+ curr_mode = curr_mode->next;
+ curr_mode->next = first_mode;
}
return first_mode;