From: Steinar H. Gunderson <steinar+git@gunderson.no>
Date: Sat, 11 Nov 2023 23:18:58 +0000 (+0100)
Subject: Fix updatedb writing incomplete .db files under Termux.
X-Git-Tag: 1.1.20~3
X-Git-Url: https://git.sesse.net/?p=plocate;a=commitdiff_plain;h=994819bafa9d04be683130433a3f57e08e08422c

Fix updatedb writing incomplete .db files under Termux.

Report and patch by Grisha Levit; see

  https://unix.stackexchange.com/questions/739150/var-lib-plocate-plocate-db-has-version-4294967295-expected-0-or-1-please-reb/761248#761248

for the entire story.
---

diff --git a/database-builder.cpp b/database-builder.cpp
index 419e012..f9dfb71 100644
--- a/database-builder.cpp
+++ b/database-builder.cpp
@@ -683,6 +683,10 @@ void DatabaseBuilder::finish_corpus()
 	fseek(outfp, 0, SEEK_SET);
 	fwrite(&hdr, sizeof(hdr), 1, outfp);
 
+	// This is needed on systems that simulate linkat() by copying
+	// the contents of the file instead of linking.
+	fflush(outfp);
+
 	if (!temp_filename.empty()) {
 		if (rename(temp_filename.c_str(), outfile.c_str()) == -1) {
 			perror("rename");