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https://github.com/moparisthebest/pacman
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Fix rewinddir regression by cleaning up db_scan
Commit 0460038447
caused a regression when
rereading the pkgcache after updating the on-disk databases. A rewinddir
call was errantly removed.
Instead of replacing the call to rewindir, clean up this whole mess.
db_scan is used only once and with target == NULL so there was actually half
the code of db_scan which was unused. This is gone now and replaced by a
single new db_populate function.
Dan: add_sorted ended up being 3x slower than one msort at the end, so I
changed back to that. I also made one pointer variable const and merged this
whole patch with my original fix for the rewinddir issue.
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
parent
ae5ef3b90f
commit
f671147282
@ -177,8 +177,8 @@ int SYMEXPORT alpm_db_update(int force, pmdb_t *db)
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for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
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pmpkg_t *pkg = lp->data;
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if(pkg && _alpm_db_remove(db, pkg) == -1) {
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_alpm_log(PM_LOG_ERROR, _("could not remove database entry %s%s\n"), db->treename,
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alpm_pkg_get_name(pkg));
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_alpm_log(PM_LOG_ERROR, _("could not remove database entry %s%s\n"),
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db->treename, pkg->name);
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RET_ERR(PM_ERR_DB_REMOVE, -1);
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}
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}
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@ -273,104 +273,60 @@ static int splitname(const char *target, pmpkg_t *pkg)
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return(0);
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}
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pmpkg_t *_alpm_db_scan(pmdb_t *db, const char *target)
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int _alpm_db_populate(pmdb_t *db)
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{
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int count = 0;
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struct dirent *ent = NULL;
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struct stat sbuf;
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char path[PATH_MAX];
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char *ptr = NULL;
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int found = 0;
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pmpkg_t *pkg = NULL;
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ALPM_LOG_FUNC;
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if(db == NULL) {
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RET_ERR(PM_ERR_DB_NULL, NULL);
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}
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ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
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/* We loop here until we read a valid package. When an iteration of this loop
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* fails, it means alpm_db_read failed to read a valid package, so we'll read
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* the next so as not to abort whole-db operations early
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*/
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while(!pkg) {
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if(target != NULL) {
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/* search for a specific package (by name only) */
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rewinddir(db->handle);
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while(!found && (ent = readdir(db->handle)) != NULL) {
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char *name;
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while((ent = readdir(db->handle)) != NULL) {
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const char *name = ent->d_name;
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pmpkg_t *pkg;
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if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
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if(strcmp(name, ".") == 0 || strcmp(name, "..") == 0) {
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continue;
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}
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/* stat the entry, make sure it's a directory */
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snprintf(path, PATH_MAX, "%s/%s", db->path, ent->d_name);
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if(stat(path, &sbuf) || !S_ISDIR(sbuf.st_mode)) {
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snprintf(path, PATH_MAX, "%s/%s", db->path, name);
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if(stat(path, &sbuf) != 0 || !S_ISDIR(sbuf.st_mode)) {
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continue;
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}
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STRDUP(name, ent->d_name, return(NULL));
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/* truncate the string at the second-to-last hyphen, */
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/* which will give us the package name */
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if((ptr = rindex(name, '-'))) {
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*ptr = '\0';
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}
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if((ptr = rindex(name, '-'))) {
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*ptr = '\0';
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}
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if(strcmp(name, target) == 0) {
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found = 1;
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}
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FREE(name);
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}
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if(!found) {
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return(NULL);
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}
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} else { /* target == NULL, full scan */
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int isdir = 0;
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while(!isdir) {
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ent = readdir(db->handle);
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if(ent == NULL) {
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return(NULL);
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}
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if(strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
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isdir = 0;
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continue;
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}
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/* stat the entry, make sure it's a directory */
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snprintf(path, PATH_MAX, "%s/%s", db->path, ent->d_name);
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if(!stat(path, &sbuf) && S_ISDIR(sbuf.st_mode)) {
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isdir = 1;
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}
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}
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}
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pkg = _alpm_pkg_new(NULL, NULL);
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if(pkg == NULL) {
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_alpm_log(PM_LOG_DEBUG, "db scan could not find package: %s\n", target);
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return(NULL);
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return(-1);
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}
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/* split the db entry name */
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if(splitname(ent->d_name, pkg) != 0) {
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if(splitname(name, pkg) != 0) {
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_alpm_log(PM_LOG_ERROR, _("invalid name for database entry '%s'\n"),
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ent->d_name);
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alpm_pkg_free(pkg);
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pkg = NULL;
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name);
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_alpm_pkg_free(pkg);
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continue;
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}
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/* explicitly read with only 'BASE' data, accessors will handle the rest */
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if(_alpm_db_read(db, pkg, INFRQ_BASE) == -1) {
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/* TODO removed corrupt entry from the FS here */
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_alpm_log(PM_LOG_ERROR, _("corrupted database entry '%s'\n"), name);
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_alpm_pkg_free(pkg);
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} else {
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continue;
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}
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pkg->origin = PKG_FROM_CACHE;
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pkg->origin_data.db = db;
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}
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/* add to the collection */
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_alpm_log(PM_LOG_FUNCTION, "adding '%s' to package cache for db '%s'\n",
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pkg->name, db->treename);
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db->pkgcache = alpm_list_add(db->pkgcache, pkg);
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count++;
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}
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return(pkg);
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db->pkgcache = alpm_list_msort(db->pkgcache, count, _alpm_pkg_cmp);
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return(count);
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}
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int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
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@ -40,31 +40,21 @@
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*/
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int _alpm_db_load_pkgcache(pmdb_t *db)
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{
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pmpkg_t *info;
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int count = 0;
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ALPM_LOG_FUNC;
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if(db == NULL) {
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return(-1);
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}
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_alpm_db_free_pkgcache(db);
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_alpm_log(PM_LOG_DEBUG, "loading package cache for repository '%s'\n",
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db->treename);
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while((info = _alpm_db_scan(db, NULL)) != NULL) {
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_alpm_log(PM_LOG_FUNCTION, "adding '%s' to package cache for db '%s'\n",
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alpm_pkg_get_name(info), db->treename);
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info->origin = PKG_FROM_CACHE;
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info->origin_data.db = db;
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/* add to the collection */
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db->pkgcache = alpm_list_add(db->pkgcache, info);
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count++;
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if(_alpm_db_populate(db) == -1) {
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_alpm_log(PM_LOG_DEBUG,
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"failed to load package cache for repository '%s'\n", db->treename);
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return(-1);
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}
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db->pkgcache = alpm_list_msort(db->pkgcache, count, _alpm_pkg_cmp);
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return(0);
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}
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@ -58,7 +58,7 @@ pmdb_t *_alpm_db_register_sync(const char *treename);
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/* be.c, backend specific calls */
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int _alpm_db_open(pmdb_t *db);
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void _alpm_db_close(pmdb_t *db);
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pmpkg_t *_alpm_db_scan(pmdb_t *db, const char *target);
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int _alpm_db_populate(pmdb_t *db);
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int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
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int _alpm_db_write(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
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int _alpm_db_remove(pmdb_t *db, pmpkg_t *info);
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