util: replace close_nointr_nofail() by a more useful safe_close()

safe_close() automatically becomes a NOP when a negative fd is passed,
and returns -1 unconditionally. This makes it easy to write lines like
this:

        fd = safe_close(fd);

Which will close an fd if it is open, and reset the fd variable
correctly.

By making use of this new scheme we can drop a > 200 lines of code that
was required to test for non-negative fds or to reset the closed fd
variable afterwards.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/journal/journal-verify.c b/src/journal/journal-verify.c
index 9434cc925c..31bae5a8f8 100644
--- a/src/journal/journal-verify.c
+++ b/src/journal/journal-verify.c
@@ -1222,9 +1222,9 @@ int journal_file_verify(
         mmap_cache_close_fd(f->mmap, entry_fd);
         mmap_cache_close_fd(f->mmap, entry_array_fd);
 
-        close_nointr_nofail(data_fd);
-        close_nointr_nofail(entry_fd);
-        close_nointr_nofail(entry_array_fd);
+        safe_close(data_fd);
+        safe_close(entry_fd);
+        safe_close(entry_array_fd);
 
         if (first_contained)
                 *first_contained = le64toh(f->header->head_entry_realtime);
@@ -1247,17 +1247,17 @@ fail:
 
         if (data_fd >= 0) {
                 mmap_cache_close_fd(f->mmap, data_fd);
-                close_nointr_nofail(data_fd);
+                safe_close(data_fd);
         }
 
         if (entry_fd >= 0) {
                 mmap_cache_close_fd(f->mmap, entry_fd);
-                close_nointr_nofail(entry_fd);
+                safe_close(entry_fd);
         }
 
         if (entry_array_fd >= 0) {
                 mmap_cache_close_fd(f->mmap, entry_array_fd);
-                close_nointr_nofail(entry_array_fd);
+                safe_close(entry_array_fd);
         }
 
         return r;