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libalpm/deps.c : cleanup + little fix for resolvedeps. 

The resolvedeps function was a bit negligent, as showed by the sync011 pactest.
Reference :
http://www.archlinux.org/pipermail/pacman-dev/2007-July/008782.html

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
This commit is contained in:
Nagy Gabor 2007-07-13 23:03:23 +02:00 committed by Dan McGee
parent 66b09410b4
commit c2920033d0
4 changed files with 70 additions and 69 deletions
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109
lib/libalpm/deps.c
View File

@ -614,19 +614,18 @@ void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit)
/* populates *list with packages that need to be installed to satisfy all
* dependencies (recursive) for syncpkg
*
* make sure *list and *trail are already initialized
* make sure **list is already initialized
*/
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
alpm_list_t *list, alpm_list_t *trail, pmtrans_t *trans,
alpm_list_t **data)
alpm_list_t **list, pmtrans_t *trans, alpm_list_t **data)
{
alpm_list_t *i, *j;
alpm_list_t *i, *j, *k;
alpm_list_t *targ;
alpm_list_t *deps = NULL;
ALPM_LOG_FUNC;
if(local == NULL || dbs_sync == NULL || syncpkg == NULL) {
if(local == NULL || dbs_sync == NULL || syncpkg == NULL || list == NULL) {
return(-1);
}
@ -642,14 +641,15 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
for(i = deps; i; i = i->next) {
int found = 0;
pmdepmissing_t *miss = i->data;
pmdepend_t *missdep = &(miss->depend);
pmpkg_t *sync = NULL;
/* check if one of the packages in *list already provides this dependency */
for(j = list; j && !found; j = j->next) {
/* check if one of the packages in *list already satisfies this dependency */
for(j = *list; j && !found; j = j->next) {
pmpkg_t *sp = j->data;
if(alpm_list_find_str(alpm_pkg_get_provides(sp), miss->depend.name)) {
_alpm_log(PM_LOG_DEBUG, "%s provides dependency %s -- skipping",
alpm_pkg_get_name(sp), miss->depend.name);
if(alpm_depcmp(sp, missdep)) {
_alpm_log(PM_LOG_DEBUG, "%s satisfies dependency %s -- skipping",
alpm_pkg_get_name(sp), missdep->name);
found = 1;
}
}
@ -659,26 +659,24 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
/* find the package in one of the repositories */
/* check literals */
for(j = dbs_sync; !sync && j; j = j->next) {
sync = _alpm_db_get_pkgfromcache(j->data, miss->depend.name);
for(j = dbs_sync; j && !found; j = j->next) {
if((sync = _alpm_db_get_pkgfromcache(j->data, missdep->name))) {
found = alpm_depcmp(sync, missdep);
}
}
/*TODO this autoresolves the first 'provides' package... we should fix this
/*TODO this autoresolves the first 'satisfier' package... we should fix this
* somehow */
/* check provides */
if(!sync) {
for(j = dbs_sync; !sync && j; j = j->next) {
alpm_list_t *provides;
provides = _alpm_db_whatprovides(j->data, miss->depend.name);
if(provides) {
sync = provides->data;
}
alpm_list_free(provides);
for(j = dbs_sync; j && !found; j = j->next) {
for(k = _alpm_db_get_pkgcache(j->data); k && !found; k = k->next) {
sync = k->data;
found = alpm_depcmp(sync, missdep);
}
}
if(!sync) {
if(!found) {
_alpm_log(PM_LOG_ERROR, _("cannot resolve dependencies for \"%s\" (\"%s\" is not in the package set)"),
miss->target, miss->depend.name);
miss->target, missdep->name);
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
@ -692,49 +690,36 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
if(_alpm_pkg_find(alpm_pkg_get_name(sync), list)) {
/* this dep is already in the target list */
_alpm_log(PM_LOG_DEBUG, "dependency %s is already in the target list -- skipping",
alpm_pkg_get_name(sync));
continue;
/* check pmo_ignorepkg and pmo_s_ignore to make sure we haven't pulled in
* something we're not supposed to.
*/
int usedep = 1;
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(sync))) {
pmpkg_t *dummypkg = _alpm_pkg_new(miss->target, NULL);
QUESTION(trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, dummypkg, sync, NULL, &usedep);
_alpm_pkg_free(dummypkg);
}
if(!_alpm_pkg_find(alpm_pkg_get_name(sync), trail)) {
/* check pmo_ignorepkg and pmo_s_ignore to make sure we haven't pulled in
* something we're not supposed to.
*/
int usedep = 1;
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(sync))) {
pmpkg_t *dummypkg = _alpm_pkg_new(miss->target, NULL);
QUESTION(trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, dummypkg, sync, NULL, &usedep);
_alpm_pkg_free(dummypkg);
}
if(usedep) {
trail = alpm_list_add(trail, sync);
if(_alpm_resolvedeps(local, dbs_sync, sync, list, trail, trans, data)) {
goto error;
}
_alpm_log(PM_LOG_DEBUG, "pulling dependency %s (needed by %s)",
alpm_pkg_get_name(sync), alpm_pkg_get_name(syncpkg));
list = alpm_list_add(list, sync);
} else {
_alpm_log(PM_LOG_ERROR, _("cannot resolve dependencies for \"%s\""), miss->target);
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
if(usedep) {
_alpm_log(PM_LOG_DEBUG, "pulling dependency %s (needed by %s)",
alpm_pkg_get_name(sync), alpm_pkg_get_name(syncpkg));
*list = alpm_list_add(*list, sync);
if(_alpm_resolvedeps(local, dbs_sync, sync, list, trans, data)) {
goto error;
}
} else {
/* cycle detected -- skip it */
_alpm_log(PM_LOG_DEBUG, "dependency cycle detected: %s", sync->name);
_alpm_log(PM_LOG_ERROR, _("cannot resolve dependencies for \"%s\""), miss->target);
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
}

3
lib/libalpm/deps.h
View File

@ -60,8 +60,7 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
alpm_list_t *packages);
void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit);
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
alpm_list_t *list, alpm_list_t *trail, pmtrans_t *trans,
alpm_list_t **data);
alpm_list_t **list, pmtrans_t *trans, alpm_list_t **data);
#endif /* _ALPM_DEPS_H */

7
lib/libalpm/sync.c
View File

@ -380,7 +380,6 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
{
alpm_list_t *deps = NULL;
alpm_list_t *list = NULL; /* allow checkdeps usage with trans->packages */
alpm_list_t *trail = NULL; /* breadcrumb list to avoid running in circles */
alpm_list_t *i, *j;
int ret = 0;
@ -404,8 +403,8 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
_alpm_log(PM_LOG_DEBUG, "resolving target's dependencies");
for(i = trans->packages; i; i = i->next) {
pmpkg_t *spkg = ((pmsyncpkg_t *)i->data)->pkg;
if(_alpm_resolvedeps(db_local, dbs_sync, spkg, list,
trail, trans, data) == -1) {
if(_alpm_resolvedeps(db_local, dbs_sync, spkg, &list,
trans, data) == -1) {
/* pm_errno is set by resolvedeps */
ret = -1;
goto cleanup;
@ -474,7 +473,6 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
goto cleanup;
}
alpm_list_free(trail);
}
/* We don't care about conflicts if we're just printing uris */
@ -710,7 +708,6 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
cleanup:
alpm_list_free(list);
alpm_list_free(trail);
return(ret);
}

20
pactest/tests/sync011.py Normal file
View File

@ -0,0 +1,20 @@
self.description = "Install a package from a sync db with cascaded dependencies + provides"
sp1 = pmpkg("dummy", "1.0-2")
sp1.depends = ["dep1", "dep2=1.0-2"]
sp2 = pmpkg("dep1")
sp2.files = ["bin/dep1"]
sp2.provides = ["dep2"]
sp3 = pmpkg("dep2", "1.0-2")
for p in sp1, sp2, sp3:
self.addpkg2db("sync", p);
self.args = "-S %s" % sp1.name
self.addrule("PACMAN_RETCODE=0")
self.addrule("PKG_VERSION=dummy|1.0-2")
self.addrule("PKG_EXIST=dep1")
self.addrule("PKG_EXIST=dep2")