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Tweaked parse_chmod() so that it takes a pointer to an existing list

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of chmod items (or NULL) and appends the new items onto the end.
This commit is contained in:
Wayne Davison
2006-01-21 09:14:39 +00:00
parent 6d8c6bdbe5
commit cf9b4794fd
1 changed files with 12 additions and 3 deletions
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15
chmod.c
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@@ -23,12 +23,13 @@ struct chmod_mode_struct {
/* 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. */
struct chmod_mode_struct *parse_chmod(char *modestr)
struct chmod_mode_struct *parse_chmod(const char *modestr,
struct chmod_mode_struct *append_to)
{
int state = STATE_1ST_HALF;
int where = 0, what = 0, op = 0, topbits = 0, topoct = 0, flags = 0;
struct chmod_mode_struct *first_mode = NULL, *curr_mode = NULL,
*prev_mode = NULL;
*prev_mode = NULL;
while (state != STATE_ERROR) {
if (!*modestr || *modestr == ',') {
@@ -153,8 +154,16 @@ struct chmod_mode_struct *parse_chmod(char *modestr)
if (state == STATE_ERROR) {
free_chmod_mode(first_mode);
first_mode = NULL;
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;
}
return first_mode;
}