New API function iso_write_opts_set_dir_rec_mtime() to store the mtime

of the source files in their ECMA-119 Directory Records

libisofs/ecma119.c

@@ -252,6 +252,7 @@ void write_one_dir_record(Ecma119Image *t, Ecma119Node *node, int file_id,
             : (uint8_t*)node->iso_name;
 
     struct ecma119_dir_record *rec = (struct ecma119_dir_record*)buf;
+    IsoNode *iso;
 
     len_dr = 33 + len_fi + (len_fi % 2 ? 0 : 1);
 
@@ -289,7 +290,14 @@ void write_one_dir_record(Ecma119Image *t, Ecma119Node *node, int file_id,
     rec->len_dr[0] = len_dr + (info != NULL ? info->suf_len : 0);
     iso_bb(rec->block, block, 4);
     iso_bb(rec->length, len, 4);
+    if(t->dir_rec_mtime) {
+        iso= node->node;
+        iso_datetime_7(rec->recording_time,
+                       t->replace_timestamps ? t->timestamp : iso->mtime,
+                       t->always_gmt);
+    } else {
         iso_datetime_7(rec->recording_time, t->now, t->always_gmt);
+    }
     rec->flags[0] = ((node->type == ECMA119_DIR) ? 2 : 0) | (multi_extend ? 0x80 : 0);
     iso_bb(rec->vol_seq_number, 1, 2);
     rec->len_fi[0] = len_fi;
@@ -888,6 +896,7 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
     target->relaxed_vol_atts = opts->relaxed_vol_atts;
     target->joliet_longer_paths = opts->joliet_longer_paths;
     target->rrip_version_1_10 = opts->rrip_version_1_10;
+    target->dir_rec_mtime = opts->dir_rec_mtime;
     target->sort_files = opts->sort_files;
 
     target->replace_uid = opts->replace_uid ? 1 : 0;
@@ -1493,6 +1502,15 @@ int iso_write_opts_set_rrip_version_1_10(IsoWriteOpts *opts, int oldvers)
     return ISO_SUCCESS;
 }
 
+int iso_write_opts_set_dir_rec_mtime(IsoWriteOpts *opts, int allow)
+{
+    if (opts == NULL) {
+        return ISO_NULL_POINTER;
+    }
+    opts->dir_rec_mtime = allow ? 1 : 0;
+    return ISO_SUCCESS;
+}
+
 int iso_write_opts_set_sort_files(IsoWriteOpts *opts, int sort)
 {
     if (opts == NULL) {

libisofs/ecma119.h

@@ -112,6 +112,15 @@ struct iso_write_opts {
      */
     unsigned int rrip_version_1_10 :1;
 
+    /**
+     * Store as ECMA-119 Directory Record timestamp the mtime of the source
+     * rather than the image creation time. (The ECMA-119 prescription seems
+     * to expect that we do have a creation timestamp with the source.
+     * mkisofs writes mtimes and the result seems more suitable if mounted
+     * without Rock Ridge support.)
+     */
+    unsigned int dir_rec_mtime :1;
+
     /** If files should be sorted based on their weight. */
     unsigned int sort_files :1;
 
@@ -256,6 +265,9 @@ struct ecma119_image
     /** Write old fashioned RRIP-1.10 rather than RRIP-1.12 */
     unsigned int rrip_version_1_10 :1;
 
+    /* Store in ECMA-119 timestamp mtime of source */
+    unsigned int dir_rec_mtime :1;
+
     /*
      * Mode replace. If one of these flags is set, the correspodent values are
      * replaced with values below.

libisofs/libisofs.h

@@ -1156,6 +1156,14 @@ int iso_write_opts_set_joliet_longer_paths(IsoWriteOpts *opts, int allow);
  */
 int iso_write_opts_set_rrip_version_1_10(IsoWriteOpts *opts, int oldvers);
 
+/**
+ * Store as ECMA-119 Directory Record timestamp the mtime of the source
+ * rather than the image creation time.
+ *
+ * @since 0.6.12
+ */
+int iso_write_opts_set_dir_rec_mtime(IsoWriteOpts *opts, int allow);
+
 /**
  * Whether to sort files based on their weight.
  *