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fixed a memory leak and avoided to modify a read-only parameter

This commit is contained in:
Aurelien Foret 2005-05-04 19:30:00 +00:00
parent ce6dcb5159
commit a5e4fec74e
1 changed files with 29 additions and 34 deletions
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63
lib/libalpm/deps.c
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@ -59,69 +59,64 @@ PMList *sortbydeps(PMList *targets, int mode)
int change = 1;
int numscans = 0;
int numtargs = 0;
int clean = 0;
if(targets == NULL) {
return(NULL);
}
/* count the number of targets */
numtargs = pm_list_count(targets);
for(i = targets; i; i = i->next) {
newtargs = pm_list_add(newtargs, i->data);
numtargs++;
}
while(change) {
PMList *tmptargs = NULL;
change = 0;
if(numscans > numtargs) {
_alpm_log(PM_LOG_WARNING, "possible dependency cycle detected");
change = 0;
continue;
}
newtargs = NULL;
numscans++;
/* run thru targets, moving up packages as necessary */
for(i = targets; i; i = i->next) {
for(i = newtargs; i; i = i->next) {
pmpkg_t *p = (pmpkg_t*)i->data;
for(j = p->depends; j; j = j->next) {
pmdepend_t dep;
int found = 0;
pmpkg_t *q = NULL;
splitdep(j->data, &dep);
if(splitdep(j->data, &dep)) {
continue;
}
/* look for dep.name -- if it's farther down in the list, then
* move it up above p
*/
for(k = i->next; k && !found; k = k->next) {
q = (pmpkg_t*)k->data;
for(k = i->next; k; k = k->next) {
q = (pmpkg_t *)k->data;
if(!strcmp(dep.name, q->name)) {
found = 1;
}
}
if(found) {
if(!pkg_isin(q, newtargs)) {
change = 1;
newtargs = pm_list_add(newtargs, q);
if(!pkg_isin(q, tmptargs)) {
change = 1;
tmptargs = pm_list_add(tmptargs, q);
}
break;
}
}
}
if(!pkg_isin(p, newtargs)) {
newtargs = pm_list_add(newtargs, p);
if(!pkg_isin(p, tmptargs)) {
tmptargs = pm_list_add(tmptargs, p);
}
}
if(clean && change) {
/* free up targets -- it's local now */
FREELISTPTR(targets);
}
targets = newtargs;
clean = 1;
}
if(mode == PM_TRANS_TYPE_REMOVE) {
/* we're removing packages, so reverse the order */
newtargs = _alpm_list_reverse(targets);
/* free the old one */
FREELISTPTR(targets);
targets = newtargs;
FREELISTPTR(newtargs);
newtargs = tmptargs;
}
return(targets);
if(mode == PM_TRANS_TYPE_REMOVE) {
/* we're removing packages, so reverse the order */
PMList *tmptargs = _alpm_list_reverse(newtargs);
/* free the old one */
FREELISTPTR(newtargs);
newtargs = tmptargs;
}
return(newtargs);
}
/* Returns a PMList* of missing_t pointers.