debian/changelog

+disorderfs (0.5.5-1) unstable; urgency=medium
+
+  [ Chris Lamb ]
+  * Inform FUSE that we wrap and thus accept the UTIME_OMIT (and UTIME_NOW)
+    magic values to ensure that "touch -m …" and "touch -a …" work as expected.
+    (Closes: #911281)
+
+  [ Bernhard M. Wiedemann ]
+  * Add tests for file modification and access time issues.
+
+ -- Chris Lamb <lamby@debian.org>  Wed, 24 Oct 2018 16:30:58 -0400
+
 disorderfs (0.5.4-2) unstable; urgency=medium
 
   * Use the new debhelper-compat(=11) notation and drop d/compat.

disorderfs.cpp

@@ -43,7 +43,7 @@ extern "C" {
 #include <sys/file.h>
 #include <stddef.h>
 
-#define DISORDERFS_VERSION "0.5.4"
+#define DISORDERFS_VERSION "0.5.5"
 
 namespace {
 	std::vector<std::string>	bare_arguments;
@@ -293,6 +293,12 @@ int	main (int argc, char** argv)
 	 * Initialize disorderfs_fuse_operations
 	 */
 
+	/*
+	 * Indicate that we should accept UTIME_OMIT (and UTIME_NOW) in the
+	 * utimens operations for "touch -m" and "touch -a"
+	 */
+	disorderfs_fuse_operations.flag_utime_omit_ok = 1;
+
 	disorderfs_fuse_operations.getattr = [] (const char* path, struct stat* st) -> int {
 		Guard g;
 		if (lstat((root + path).c_str(), st) == -1) {

tests/touch

+#!/bin/sh
+# Test for https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911281
+
+. ./common
+
+Mount
+
+EXPECTED="12345678"
+FILENAME="target/a"
+
+touch ${FILENAME}
+touch -d @${EXPECTED} ${FILENAME}
+RESULT="$(stat --format=%X-%Y ${FILENAME})"
+if [ "${RESULT}" != "${EXPECTED}-${EXPECTED}" ]
+then
+	Fail "test1: Got=${RESULT} Expected=${EXPECTED}"
+fi
+
+# This is what tar xf does for extracted files via futimens(2)
+touch ${FILENAME}
+touch -m -d @${EXPECTED} ${FILENAME}
+RESULT="$(stat --format=%Y ${FILENAME})"
+if [ "${RESULT}" != "${EXPECTED}" ]
+then
+	Fail "test2: Got=${RESULT} Expected=${EXPECTED}"
+fi
+
+touch ${FILENAME}
+touch -a -d @${EXPECTED} ${FILENAME}
+RESULT="$(stat --format=%X ${FILENAME})"
+if [ "${RESULT}" != "${EXPECTED}" ]
+then
+	Fail "test3: Got=${RESULT} Expected=${EXPECTED}"
+fi
+
+Unmount