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authorDan McGee <dan@archlinux.org>2007-11-13 02:40:08 +0100
committerDan McGee <dan@archlinux.org>2007-11-15 01:49:50 +0100
commit7219326dd4d01d7e49b8a40746f5495c1c329c9c (patch)
tree01cefb7c433105ba88850dc272ea7791d9954c0b /lib/libalpm
parentf5fcaf0b3c8d05e94d08d6357324cfa69d8ceae7 (diff)
downloadpacman-7219326dd4d01d7e49b8a40746f5495c1c329c9c.tar.gz
pacman-7219326dd4d01d7e49b8a40746f5495c1c329c9c.tar.xz
Remove REQUIREDBY usage from libalpm
Instead of using the often-busted REQUIREDBY entries in the pacman database, compute them each time they are required. This should help many things: 1. Simplify the codebase 2. Prevent future database corruption 3. Ensure when we do use requiredby, it is always correct 4. Shrink the pmpkg_t memory overhead Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib/libalpm')
-rw-r--r--lib/libalpm/add.c7
-rw-r--r--lib/libalpm/alpm.h1
-rw-r--r--lib/libalpm/be_files.c11
-rw-r--r--lib/libalpm/db.c1
-rw-r--r--lib/libalpm/deps.c23
-rw-r--r--lib/libalpm/package.c23
-rw-r--r--lib/libalpm/package.h2
-rw-r--r--lib/libalpm/remove.c9
-rw-r--r--lib/libalpm/sync.c49
-rw-r--r--lib/libalpm/trans.c65
-rw-r--r--lib/libalpm/trans.h1
11 files changed, 18 insertions, 174 deletions
diff --git a/lib/libalpm/add.c b/lib/libalpm/add.c
index 277293f6..d242134a 100644
--- a/lib/libalpm/add.c
+++ b/lib/libalpm/add.c
@@ -804,10 +804,6 @@ static int commit_single_pkg(pmpkg_t *newpkg, int pkg_current, int pkg_count,
}
}
- /* Update the requiredby field by scanning the whole database
- * looking for packages depending on the package to add */
- _alpm_pkg_update_requiredby(newpkg);
-
/* make an install date (in UTC) */
newpkg->installdate = time(NULL);
@@ -827,9 +823,6 @@ static int commit_single_pkg(pmpkg_t *newpkg, int pkg_current, int pkg_count,
alpm_pkg_get_name(newpkg));
}
- /* update dependency packages' REQUIREDBY fields */
- _alpm_trans_update_depends(trans, newpkg);
-
if(is_upgrade) {
PROGRESS(trans, PM_TRANS_PROGRESS_UPGRADE_START,
alpm_pkg_get_name(newpkg), 100, pkg_count, pkg_current);
diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index a279629f..ffcd3870 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -211,7 +211,6 @@ alpm_list_t *alpm_pkg_get_licenses(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_groups(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_depends(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_optdepends(pmpkg_t *pkg);
-alpm_list_t *alpm_pkg_get_requiredby(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_conflicts(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_provides(pmpkg_t *pkg);
alpm_list_t *alpm_pkg_get_deltas(pmpkg_t *pkg);
diff --git a/lib/libalpm/be_files.c b/lib/libalpm/be_files.c
index 2f88a16d..a6cde689 100644
--- a/lib/libalpm/be_files.c
+++ b/lib/libalpm/be_files.c
@@ -461,10 +461,6 @@ int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->optdepends = alpm_list_add(info->optdepends, strdup(line));
}
- } else if(!strcmp(line, "%REQUIREDBY%")) {
- while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
- info->requiredby = alpm_list_add(info->requiredby, strdup(line));
- }
} else if(!strcmp(line, "%CONFLICTS%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->conflicts = alpm_list_add(info->conflicts, strdup(line));
@@ -685,13 +681,6 @@ int _alpm_db_write(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
}
fprintf(fp, "\n");
}
- if(local && info->requiredby) {
- fputs("%REQUIREDBY%\n", fp);
- for(lp = info->requiredby; lp; lp = lp->next) {
- fprintf(fp, "%s\n", (char *)lp->data);
- }
- fprintf(fp, "\n");
- }
if(info->conflicts) {
fputs("%CONFLICTS%\n", fp);
for(lp = info->conflicts; lp; lp = lp->next) {
diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index 599d24d0..150b365a 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -475,7 +475,6 @@ alpm_list_t SYMEXPORT *alpm_db_get_upgrades(void)
pm_errno = PM_ERR_MEMORY;
goto error;
}
- dummy->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(lpkg));
pmsyncpkg_t *syncpkg;
syncpkg = _alpm_sync_find(syncpkgs, alpm_pkg_get_name(spkg));
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c
index 63775d20..42ceb743 100644
--- a/lib/libalpm/deps.c
+++ b/lib/libalpm/deps.c
@@ -254,12 +254,13 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
}
if(op == PM_TRANS_TYPE_UPGRADE) {
- /* PM_TRANS_TYPE_UPGRADE handles the backwards dependencies, ie, the packages
- * listed in the requiredby field.
+ /* PM_TRANS_TYPE_UPGRADE handles the backwards dependencies, ie,
+ * the packages listed in the requiredby field.
*/
for(i = packages; i; i = i->next) {
pmpkg_t *newpkg = i->data;
pmpkg_t *oldpkg;
+ alpm_list_t *requiredby;
if(newpkg == NULL) {
_alpm_log(PM_LOG_DEBUG, "null package found in package list\n");
continue;
@@ -272,7 +273,9 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
alpm_pkg_get_name(newpkg));
continue;
}
- for(j = alpm_pkg_get_requiredby(oldpkg); j; j = j->next) {
+
+ requiredby = alpm_pkg_compute_requiredby(oldpkg);
+ for(j = requiredby; j; j = j->next) {
pmpkg_t *p;
found = 0;
@@ -340,6 +343,7 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
FREE(depend);
}
}
+ FREELIST(requiredby);
}
}
if(op == PM_TRANS_TYPE_ADD || op == PM_TRANS_TYPE_UPGRADE) {
@@ -394,12 +398,15 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
/* check requiredby fields */
for(i = packages; i; i = i->next) {
pmpkg_t *rmpkg = alpm_list_getdata(i);
+ alpm_list_t *requiredby;
if(rmpkg == NULL) {
_alpm_log(PM_LOG_DEBUG, "null package found in package list\n");
continue;
}
- for(j = alpm_pkg_get_requiredby(rmpkg); j; j = j->next) {
+
+ requiredby = alpm_pkg_compute_requiredby(rmpkg);
+ for(j = requiredby; j; j = j->next) {
pmpkg_t *p;
found = 0;
if(_alpm_pkg_find(j->data, packages)) {
@@ -446,6 +453,7 @@ alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
FREE(depend);
}
}
+ FREELIST(requiredby);
}
}
@@ -559,7 +567,7 @@ pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
int include_explicit)
{
- alpm_list_t *i;
+ alpm_list_t *i, *requiredby;
if(_alpm_pkg_find(alpm_pkg_get_name(pkg), targets)) {
return(0);
@@ -581,12 +589,15 @@ static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
* if checkdeps detected it would break something */
/* see if other packages need it */
- for(i = alpm_pkg_get_requiredby(pkg); i; i = i->next) {
+ requiredby = alpm_pkg_compute_requiredby(pkg);
+ for(i = requiredby; i; i = i->next) {
pmpkg_t *reqpkg = _alpm_db_get_pkgfromcache(db, i->data);
if(reqpkg && !_alpm_pkg_find(alpm_pkg_get_name(reqpkg), targets)) {
+ FREE(requiredby);
return(0);
}
}
+ FREELIST(requiredby);
/* it's ok to remove */
return(1);
diff --git a/lib/libalpm/package.c b/lib/libalpm/package.c
index 7c2870c2..89785a14 100644
--- a/lib/libalpm/package.c
+++ b/lib/libalpm/package.c
@@ -405,20 +405,6 @@ alpm_list_t SYMEXPORT *alpm_pkg_get_optdepends(pmpkg_t *pkg)
return pkg->optdepends;
}
-alpm_list_t SYMEXPORT *alpm_pkg_get_requiredby(pmpkg_t *pkg)
-{
- ALPM_LOG_FUNC;
-
- /* Sanity checks */
- ASSERT(handle != NULL, return(NULL));
- ASSERT(pkg != NULL, return(NULL));
-
- if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
- _alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
- }
- return pkg->requiredby;
-}
-
alpm_list_t SYMEXPORT *alpm_pkg_get_conflicts(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
@@ -695,7 +681,6 @@ pmpkg_t *_alpm_pkg_dup(pmpkg_t *pkg)
memcpy(newpkg, pkg, sizeof(pmpkg_t));
newpkg->licenses = alpm_list_strdup(alpm_pkg_get_licenses(pkg));
- newpkg->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(pkg));
newpkg->conflicts = alpm_list_strdup(alpm_pkg_get_conflicts(pkg));
newpkg->files = alpm_list_strdup(alpm_pkg_get_files(pkg));
newpkg->backup = alpm_list_strdup(alpm_pkg_get_backup(pkg));
@@ -729,7 +714,6 @@ void _alpm_pkg_free(pmpkg_t *pkg)
FREELIST(pkg->depends);
FREELIST(pkg->optdepends);
FREELIST(pkg->conflicts);
- FREELIST(pkg->requiredby);
FREELIST(pkg->groups);
FREELIST(pkg->provides);
FREELIST(pkg->replaces);
@@ -1098,13 +1082,6 @@ pmpkg_t *_alpm_pkg_find(const char *needle, alpm_list_t *haystack)
return(NULL);
}
-/* fill in requiredby field of package,
- * used when we want to install or add a package */
-void _alpm_pkg_update_requiredby(pmpkg_t *pkg)
-{
- pkg->requiredby = alpm_pkg_compute_requiredby(pkg);
-}
-
/* TODO this should either be public, or done somewhere else */
int _alpm_pkg_istoonew(pmpkg_t *pkg)
{
diff --git a/lib/libalpm/package.h b/lib/libalpm/package.h
index ab93fd86..b125e06c 100644
--- a/lib/libalpm/package.h
+++ b/lib/libalpm/package.h
@@ -72,7 +72,6 @@ struct __pmpkg_t {
alpm_list_t *backup;
alpm_list_t *depends;
alpm_list_t *optdepends;
- alpm_list_t *requiredby;
alpm_list_t *conflicts;
alpm_list_t *provides;
alpm_list_t *deltas;
@@ -98,7 +97,6 @@ int alpm_pkg_compare_versions(pmpkg_t *local_pkg, pmpkg_t *pkg);
pmpkg_t *_alpm_pkg_load(const char *pkgfile, unsigned short full);
pmpkg_t *_alpm_pkg_find(const char *needle, alpm_list_t *haystack);
int _alpm_pkg_istoonew(pmpkg_t *pkg);
-void _alpm_pkg_update_requiredby(pmpkg_t *pkg);
int _alpm_pkg_should_ignore(pmpkg_t *pkg);
#endif /* _ALPM_PACKAGE_H */
diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c
index 86cfee68..66a1527c 100644
--- a/lib/libalpm/remove.c
+++ b/lib/libalpm/remove.c
@@ -249,7 +249,7 @@ static void unlink_file(pmpkg_t *info, alpm_list_t *lp, pmtrans_t *trans)
int _alpm_remove_commit(pmtrans_t *trans, pmdb_t *db)
{
- pmpkg_t *info, *infodup;
+ pmpkg_t *info;
alpm_list_t *targ, *lp;
int pkg_count;
@@ -331,9 +331,6 @@ int _alpm_remove_commit(pmtrans_t *trans, pmdb_t *db)
}
}
- /* duplicate the package so we can remove the requiredby fields later */
- infodup = _alpm_pkg_dup(info);
-
/* remove the package from the database */
_alpm_log(PM_LOG_DEBUG, "updating database\n");
_alpm_log(PM_LOG_DEBUG, "removing database entry '%s'\n", pkgname);
@@ -347,10 +344,6 @@ int _alpm_remove_commit(pmtrans_t *trans, pmdb_t *db)
pkgname);
}
- /* update dependency packages' REQUIREDBY fields */
- _alpm_trans_update_depends(trans, infodup);
- _alpm_pkg_free(infodup);
-
/* call a done event if this isn't an upgrade */
if(trans->type != PM_TRANS_TYPE_REMOVEUPGRADE) {
EVENT(trans, PM_TRANS_EVT_REMOVE_DONE, info, NULL);
diff --git a/lib/libalpm/sync.c b/lib/libalpm/sync.c
index 336b5848..e5748e6d 100644
--- a/lib/libalpm/sync.c
+++ b/lib/libalpm/sync.c
@@ -137,7 +137,6 @@ static int find_replacements(pmtrans_t *trans, pmdb_t *db_local,
pm_errno = PM_ERR_MEMORY;
goto error;
}
- dummy->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(lpkg));
/* check if spkg->name is already in the packages list. */
sync = _alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg));
if(sync) {
@@ -563,7 +562,6 @@ int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync
asked = alpm_list_add(asked, strdup(miss->depend.name));
if(doremove) {
pmpkg_t *q = _alpm_pkg_dup(local);
- q->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(local));
if(sync->type != PM_SYNC_TYPE_REPLACE) {
/* switch this sync type to REPLACE */
sync->type = PM_SYNC_TYPE_REPLACE;
@@ -1241,53 +1239,6 @@ int _alpm_sync_commit(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t **data)
_alpm_trans_free(tr);
tr = NULL;
- /* propagate replaced packages' requiredby fields to their new owners */
- if(replaces) {
- _alpm_log(PM_LOG_DEBUG, "updating database for replaced packages' dependencies\n");
- for(i = trans->packages; i; i = i->next) {
- pmsyncpkg_t *sync = i->data;
- if(sync->type == PM_SYNC_TYPE_REPLACE) {
- alpm_list_t *j;
- pmpkg_t *new = _alpm_db_get_pkgfromcache(db_local, alpm_pkg_get_name(sync->pkg));
- for(j = sync->data; j; j = j->next) {
- alpm_list_t *k;
- pmpkg_t *old = j->data;
- /* merge lists */
- for(k = alpm_pkg_get_requiredby(old); k; k = k->next) {
- if(!alpm_list_find_str(alpm_pkg_get_requiredby(new), k->data)) {
- /* replace old's name with new's name in the requiredby's dependency list */
- alpm_list_t *m;
- pmpkg_t *depender = _alpm_db_get_pkgfromcache(db_local, k->data);
- if(depender == NULL) {
- /* If the depending package no longer exists in the local db,
- * then it must have ALSO conflicted with sync->pkg. If
- * that's the case, then we don't have anything to propagate
- * here. */
- continue;
- }
- for(m = alpm_pkg_get_depends(depender); m; m = m->next) {
- if(!strcmp(m->data, alpm_pkg_get_name(old))) {
- FREE(m->data);
- m->data = strdup(alpm_pkg_get_name(new));
- }
- }
- if(_alpm_db_write(db_local, depender, INFRQ_DEPENDS) == -1) {
- _alpm_log(PM_LOG_ERROR, _("could not update requiredby for database entry %s-%s\n"),
- alpm_pkg_get_name(new), alpm_pkg_get_version(new));
- }
- /* add the new requiredby */
- new->requiredby = alpm_list_add(alpm_pkg_get_requiredby(new), strdup(k->data));
- }
- }
- }
- if(_alpm_db_write(db_local, new, INFRQ_DEPENDS) == -1) {
- _alpm_log(PM_LOG_ERROR, _("could not update new database entry %s-%s\n"),
- alpm_pkg_get_name(new), alpm_pkg_get_version(new));
- }
- }
- }
- }
-
return(0);
error:
diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index a5fba845..bcd0707d 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -438,71 +438,6 @@ int _alpm_trans_commit(pmtrans_t *trans, alpm_list_t **data)
return(0);
}
-/* A depends on B through n depends <=> A listed in B's requiredby n times
- * n == 0 or 1 in almost all cases */
-int _alpm_trans_update_depends(pmtrans_t *trans, pmpkg_t *pkg)
-{
- alpm_list_t *i, *j;
- alpm_list_t *depends = NULL;
- const char *pkgname;
- pmdb_t *localdb;
-
- ALPM_LOG_FUNC;
-
- /* Sanity checks */
- ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
- ASSERT(pkg != NULL, RET_ERR(PM_ERR_PKG_INVALID, -1));
-
- pkgname = alpm_pkg_get_name(pkg);
- depends = alpm_pkg_get_depends(pkg);
-
- if(depends) {
- _alpm_log(PM_LOG_DEBUG, "updating dependency packages 'requiredby' fields for %s-%s\n",
- pkgname, pkg->version);
- } else {
- _alpm_log(PM_LOG_DEBUG, "package has no dependencies, no other packages to update\n");
- }
-
- localdb = alpm_option_get_localdb();
- for(i = depends; i; i = i->next) {
- if(!i->data) {
- continue;
- }
- pmdepend_t* dep = alpm_splitdep(i->data);
- if(dep == NULL) {
- continue;
- }
- for(j = _alpm_db_get_pkgcache(localdb); j; j = j->next) {
- pmpkg_t *deppkg = j->data;
- if(deppkg && alpm_depcmp(deppkg, dep)) {
- /* this is cheating... we call this function to populate the package */
- alpm_list_t *rqdby = alpm_pkg_get_requiredby(deppkg);
-
- _alpm_log(PM_LOG_DEBUG, "updating 'requiredby' field for package '%s'\n",
- alpm_pkg_get_name(deppkg));
-
- if(trans->type == PM_TRANS_TYPE_REMOVE
- || trans->type == PM_TRANS_TYPE_REMOVEUPGRADE) {
- void *data = NULL;
- rqdby = alpm_list_remove(rqdby, pkgname, _alpm_str_cmp, &data);
- FREE(data);
- deppkg->requiredby = rqdby;
- } else {
- rqdby = alpm_list_add(rqdby, strdup(pkgname));
- deppkg->requiredby = rqdby;
- }
-
- if(_alpm_db_write(localdb, deppkg, INFRQ_DEPENDS)) {
- _alpm_log(PM_LOG_ERROR, _("could not update 'requiredby' database entry %s-%s\n"),
- alpm_pkg_get_name(deppkg), alpm_pkg_get_version(deppkg));
- }
- }
- }
- FREE(dep);
- }
- return(0);
-}
-
/* A cheap grep for text files, returns 1 if a substring
* was found in the text file fn, 0 if it wasn't
*/
diff --git a/lib/libalpm/trans.h b/lib/libalpm/trans.h
index f3575895..79b8c20f 100644
--- a/lib/libalpm/trans.h
+++ b/lib/libalpm/trans.h
@@ -78,7 +78,6 @@ int _alpm_trans_sysupgrade(pmtrans_t *trans);
int _alpm_trans_addtarget(pmtrans_t *trans, char *target);
int _alpm_trans_prepare(pmtrans_t *trans, alpm_list_t **data);
int _alpm_trans_commit(pmtrans_t *trans, alpm_list_t **data);
-int _alpm_trans_update_depends(pmtrans_t *trans, pmpkg_t *pkg);
int _alpm_runscriptlet(const char *root, const char *installfn,
const char *script, const char *ver,
const char *oldver, pmtrans_t *trans);