Add a alpm_db_test() function to the backend for checking DB consistency

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/alpm.h

@@ -157,6 +157,7 @@ alpm_list_t *alpm_db_whatprovides(pmdb_t *db, const char *name);
 
 pmgrp_t *alpm_db_readgrp(pmdb_t *db, const char *name);
 alpm_list_t *alpm_db_getgrpcache(pmdb_t *db);
+alpm_list_t *alpm_db_test(pmdb_t *db);
 alpm_list_t *alpm_db_search(pmdb_t *db, const alpm_list_t* needles);
 
 alpm_list_t *alpm_db_get_upgrades();

lib/libalpm/be_files.c

@@ -65,6 +65,37 @@ int _alpm_db_install(pmdb_t *db, const char *dbfile)
 	return unlink(dbfile);
 }
 
+alpm_list_t *_alpm_db_test(pmdb_t *db)
+{
+	struct dirent *ent;
+	char path[PATH_MAX];
+	struct stat buf;
+	alpm_list_t *ret = NULL;
+
+	while ((ent = readdir(db->handle)) != NULL) {
+		if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..")) {
+			continue;
+		}
+		/* check for desc, depends, and files */
+		snprintf(path, PATH_MAX, "%s/%s/desc", db->path, ent->d_name);
+		if(stat(path, &buf)) {
+			snprintf(path, LOG_STR_LEN, _("%s: description file is missing"), ent->d_name);
+			ret = alpm_list_add(ret, strdup(path));
+		}
+		snprintf(path, PATH_MAX, "%s/%s/depends", db->path, ent->d_name);
+		if(stat(path, &buf)) {
+			snprintf(path, LOG_STR_LEN, _("%s: dependency file is missing"), ent->d_name);
+			ret = alpm_list_add(ret, strdup(path));
+		}
+		snprintf(path, PATH_MAX, "%s/%s/files", db->path, ent->d_name);
+		if(stat(path, &buf)) {
+			snprintf(path, LOG_STR_LEN, _("%s: file list is missing"), ent->d_name);
+			ret = alpm_list_add(ret, strdup(path));
+		}
+	}
+	return(ret);
+}
+
 int _alpm_db_open(pmdb_t *db)
 {
 	ALPM_LOG_FUNC;

lib/libalpm/db.c

@@ -368,6 +368,19 @@ alpm_list_t SYMEXPORT *alpm_db_getgrpcache(pmdb_t *db)
 	return(_alpm_db_get_grpcache(db));
 }
 
+/** Tests a database
+ * @param db pointer to the package database to search in
+ * @return the list of problems found on success, NULL on error
+ */
+alpm_list_t SYMEXPORT *alpm_db_test(pmdb_t *db)
+{
+	/* Sanity checks */
+	ASSERT(handle != NULL, return(NULL));
+	ASSERT(db != NULL, return(NULL));
+
+	return(_alpm_db_test(db));
+}
+
 /** Searches a database
  * @param db pointer to the package database to search in
  * @param needles the list of strings to search for

lib/libalpm/db.h

@@ -56,6 +56,7 @@ pmdb_t *_alpm_db_register(const char *treename);
 
 /* be.c, backend specific calls */
 int _alpm_db_install(pmdb_t *db, const char *dbfile);
+alpm_list_t *_alpm_db_test(pmdb_t *db);
 int _alpm_db_open(pmdb_t *db);
 void _alpm_db_close(pmdb_t *db);
 void _alpm_db_rewind(pmdb_t *db);