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Fix for removing a package that is no longer needed 

Fix for remove041 pactest. You could not remove a package before that
was provided by something else already installed on the system. This fixes
this problem.

Reference:
http://archlinux.org/pipermail/pacman-dev/2007-April/008131.html
http://archlinux.org/pipermail/pacman-dev/2007-April/008134.html

Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Chantry Xavier 2007-06-10 04:00:50 +02:00 committed by Dan McGee
parent 1da78a7d25
commit 796cc4e6ed
1 changed files with 43 additions and 37 deletions
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80
lib/libalpm/deps.c
View File

@ -349,50 +349,56 @@ alpm_list_t *_alpm_checkdeps(pmtrans_t *trans, pmdb_t *db, pmtranstype_t op,
} else if(op == PM_TRANS_TYPE_REMOVE) {
/* check requiredby fields */
for(i = packages; i; i = i->next) {
pmpkg_t *tp = i->data;
if(tp == NULL) {
pmpkg_t *rmpkg = alpm_list_getdata(i);
if(rmpkg == NULL) {
_alpm_log(PM_LOG_DEBUG, _("null package found in package list"));
continue;
}
found=0;
for(j = alpm_pkg_get_requiredby(tp); j; j = j->next) {
/* Search for 'reqname' in packages for removal */
char *reqname = j->data;
alpm_list_t *x = NULL;
for(x = packages; x; x = x->next) {
pmpkg_t *xp = x->data;
if(strcmp(reqname, alpm_pkg_get_name(xp)) == 0) {
found = 1;
break;
}
for(j = alpm_pkg_get_requiredby(rmpkg); j; j = j->next) {
pmpkg_t *p;
found = 0;
if(_alpm_pkg_find(j->data, packages)) {
/* package also in the remove list, so don't worry about it */
continue;
}
if(!found) {
/* check if a package in trans->packages provides this package */
for(k = trans->packages; !found && k; k=k->next) {
pmpkg_t *spkg = NULL;
if(trans->type == PM_TRANS_TYPE_SYNC) {
pmsyncpkg_t *sync = k->data;
spkg = sync->pkg;
} else {
spkg = k->data;
if((p = _alpm_db_get_pkgfromcache(db, j->data)) == NULL) {
/* hmmm... package isn't installed... */
continue;
}
for(k = alpm_pkg_get_depends(p); k; k = k->next) {
pmdepend_t *depend = alpm_splitdep(k->data);
if(depend == NULL) {
continue;
}
/* if rmpkg satisfied this dep, try to find an other satisfier
* (which won't be removed)*/
if(alpm_depcmp(rmpkg, depend)) {
int satisfied = 0;
for(l = _alpm_db_get_pkgcache(db); l; l = l->next) {
pmpkg_t *pkg = l->data;
if(alpm_depcmp(pkg, depend) && !_alpm_pkg_find(alpm_pkg_get_name(pkg), packages)) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: dependency '%s' satisfied by installed package '%s'"),
depend->name, alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
}
if(spkg) {
if(alpm_list_find_str(alpm_pkg_get_provides(spkg), tp->name)) {
found = 1;
if(!satisfied) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: found %s which requires %s"),
alpm_pkg_get_name(p), alpm_pkg_get_name(rmpkg));
miss = _alpm_depmiss_new(alpm_pkg_get_name(rmpkg), PM_DEP_TYPE_DEPEND,
PM_DEP_MOD_ANY, alpm_pkg_get_name(p), NULL);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
}
if(!found) {
_alpm_log(PM_LOG_DEBUG, _("checkdeps: found %s as required by %s"),
reqname, alpm_pkg_get_name(tp));
miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), PM_DEP_TYPE_DEPEND,
PM_DEP_MOD_ANY, j->data, NULL);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
free(depend);
}
}
}