util: add rename_noreplace

renameat2() exists since Linux 3.15 but btrfs support for the flag
RENAME_NOREPLACE was added later.

This patch implements a fallback when renameat2() returns EINVAL.
EINVAL is the error returned when the filesystem does not support one of
the flags.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/import/pull-raw.c b/src/import/pull-raw.c
index d1d77d598b..c0c6d57ead 100644
--- a/src/import/pull-raw.c
+++ b/src/import/pull-raw.c
@@ -384,9 +384,9 @@ static void raw_pull_job_on_finished(PullJob *j) {
                 if (r < 0)
                         goto finish;
 
-                r = renameat2(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path, RENAME_NOREPLACE);
+                r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path);
                 if (r < 0) {
-                        r = log_error_errno(errno, "Failed to move RAW file into place: %m");
+                        log_error_errno(r, "Failed to move RAW file into place: %m");
                         goto finish;
                 }