[PATCH 6/7] fsstress: allow fsync on directories too

[fdmanana]

From: Filipe Manana <fdman...@suse.com>

Currently the fsync function can only be performed against regular files.
Allow it to operate on directories too, to increase test coverage and allow
for chances of finding bugs in a filesystem's implementation of fsync
against directories.

Signed-off-by: Filipe Manana <fdman...@suse.com>
---
 ltp/fsstress.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 0fb9e399..bd058c04 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -3460,15 +3460,21 @@ fsync_f(int opno, long r)
        pathname_t      f;
        int             fd;
        int             v;
+       DIR             *dir = NULL;
 
        init_pathname(&f);
-       if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
+       if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, NULL, &v)) {
                if (v)
                        printf("%d/%d: fsync - no filename\n", procid, opno);
                free_pathname(&f);
                return;
        }
        fd = open_path(&f, O_WRONLY);
+       if (fd < 0 && errno == EISDIR) {
+               dir = opendir_path(&f);
+               if (dir)
+                       fd = dirfd(dir);
+       }
        e = fd < 0 ? errno : 0;
        check_cwd();
        if (fd < 0) {
@@ -3476,13 +3482,18 @@ fsync_f(int opno, long r)
                        printf("%d/%d: fsync - open %s failed %d\n",
                                procid, opno, f.path, e);
                free_pathname(&f);
+               if (dir)
+                       closedir(dir);
                return;
        }
        e = fsync(fd) < 0 ? errno : 0;
        if (v)
                printf("%d/%d: fsync %s %d\n", procid, opno, f.path, e);
        free_pathname(&f);
-       close(fd);
+       if (dir)
+               closedir(dir);
+       else
+               close(fd);
 }
 
 void
-- 
2.11.0