From 95555ede4d732878d576415e5d338b0104b78ad6 Mon Sep 17 00:00:00 2001 From: Timo Teräs Date: Fri, 27 May 2011 16:49:25 +0300 Subject: db: more fix for read-only cache remounting remount to read-write before trying to create the cache directory subdirs. fix a fd leak that might prevent remounting back to rw. --- src/database.c | 31 ++++++++++++++----------------- 1 file changed, 14 insertions(+), 17 deletions(-) (limited to 'src/database.c') diff --git a/src/database.c b/src/database.c index 0fc59df..9617b4e 100644 --- a/src/database.c +++ b/src/database.c @@ -1218,10 +1218,22 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts) db->cache_dir = apk_linked_cache_dir; db->cache_fd = fd; + if ((dbopts->open_flags & (APK_OPENF_WRITE | APK_OPENF_CACHE_WRITE)) && + fstatvfs(fd, &stvfs) == 0 && (stvfs.f_flag & ST_RDONLY) != 0) { + /* remount cache read-write */ + db->cache_remount_dir = find_mountpoint(db->root_fd, db->cache_dir); + if (db->cache_remount_dir == NULL) { + apk_warning("Unable to find cache directory mount point"); + } else if (do_remount(db->cache_remount_dir, "rw") != 0) { + free(db->cache_remount_dir); + db->cache_remount_dir = NULL; + apk_error("Unable to remount cache read-write"); + r = EROFS; + goto ret_r; + } + } mkdirat(db->cache_fd, "tmp", 0644); db->cachetmp_fd = openat(db->cache_fd, "tmp", O_RDONLY | O_CLOEXEC); - if (fstatvfs(fd, &stvfs) == 0 && (stvfs.f_flag & ST_RDONLY) != 0) - db->ro_cache = 1; } else { if (fd >= 0) close(fd); @@ -1264,21 +1276,6 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts) } } - if ((dbopts->open_flags & (APK_OPENF_WRITE | APK_OPENF_CACHE_WRITE)) && - db->ro_cache) { - /* remount cache read-write */ - db->cache_remount_dir = find_mountpoint(db->root_fd, db->cache_dir); - if (db->cache_remount_dir == NULL) { - apk_warning("Unable to find cache directory mount point"); - } else if (do_remount(db->cache_remount_dir, "rw") != 0) { - free(db->cache_remount_dir); - db->cache_remount_dir = NULL; - apk_error("Unable to remount cache read-write"); - r = EROFS; - goto ret_r; - } - } - if (!(dbopts->open_flags & APK_OPENF_NO_SYS_REPOS)) { list_for_each_entry(repo, &dbopts->repository_list, list) { r = apk_db_add_repository(db, APK_BLOB_STR(repo->url)); -- cgit v1.2.3-60-g2f50