New API function iso_write_opts_set_rrip_version_1_10() allows to

write old fashioned RRIP-1.10 rather than RRIP-1.12.

libisofs/ecma119.c

@@ -887,6 +887,7 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
     target->allow_full_ascii = opts->allow_full_ascii;
     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->sort_files = opts->sort_files;
 
     target->replace_uid = opts->replace_uid ? 1 : 0;
@@ -1483,6 +1484,15 @@ int iso_write_opts_set_joliet_longer_paths(IsoWriteOpts *opts, int allow)
     return ISO_SUCCESS;
 }
 
+int iso_write_opts_set_rrip_version_1_10(IsoWriteOpts *opts, int oldvers)
+{
+    if (opts == NULL) {
+        return ISO_NULL_POINTER;
+    }
+    opts->rrip_version_1_10 = oldvers ? 1 : 0;
+    return ISO_SUCCESS;
+}
+
 int iso_write_opts_set_sort_files(IsoWriteOpts *opts, int sort)
 {
     if (opts == NULL) {

libisofs/ecma119.h

@@ -105,6 +105,13 @@ struct iso_write_opts {
      */
     unsigned int joliet_longer_paths :1;
 
+    /**
+     * Write Rock Ridge info as of specification RRIP-1.10 rather than
+     * RRIP-1.12: signature "RRIP_1991A" rather than "IEEE_1282",
+     *            field PX without file serial number
+     */
+    unsigned int rrip_version_1_10 :1;
+
     /** If files should be sorted based on their weight. */
     unsigned int sort_files :1;
 
@@ -246,6 +253,9 @@ struct ecma119_image
     /** Allow paths on Joliet tree to be larger than 240 bytes */
     unsigned int joliet_longer_paths :1;
 
+    /** Write old fashioned RRIP-1.10 rather than RRIP-1.12 */
+    unsigned int rrip_version_1_10 :1;
+
     /*
      * Mode replace. If one of these flags is set, the correspodent values are
      * replaced with values below.

libisofs/libisofs.h

@@ -1147,6 +1147,15 @@ int iso_write_opts_set_relaxed_vol_atts(IsoWriteOpts *opts, int allow);
  */
 int iso_write_opts_set_joliet_longer_paths(IsoWriteOpts *opts, int allow);
 
+/**
+ * Write Rock Ridge info as of specification RRIP-1.10 rather than RRIP-1.12:
+ * signature "RRIP_1991A" rather than "IEEE_1282", field PX without file
+ * serial number.
+ *
+ * @since 0.6.12
+ */
+int iso_write_opts_set_rrip_version_1_10(IsoWriteOpts *opts, int oldvers);
+
 /**
  * Whether to sort files based on their weight.
  *

libisofs/rockridge.c

@@ -94,13 +94,19 @@ int rrip_add_PX(Ecma119Image *t, Ecma119Node *n, struct susp_info *susp)
 
     PX[0] = 'P';
     PX[1] = 'X';
+    if (!t->rrip_version_1_10) {
         PX[2] = 44;
+    } else {
+        PX[2] = 36;
+    }
     PX[3] = 1;
     iso_bb(&PX[4], px_get_mode(t, n), 4);
     iso_bb(&PX[12], n->nlink, 4);
     iso_bb(&PX[20], px_get_uid(t, n), 4);
     iso_bb(&PX[28], px_get_gid(t, n), 4);
+    if (!t->rrip_version_1_10) {
         iso_bb(&PX[36], n->ino, 4);
+    }
 
     return susp_append(t, susp, PX);
 }
@@ -467,7 +473,18 @@ int rrip_add_SL(Ecma119Image *t, struct susp_info *susp, uint8_t **comp,
 static
 int rrip_add_ER(Ecma119Image *t, struct susp_info *susp)
 {
-    unsigned char *ER = malloc(182);
+    unsigned char *ER;
+
+    if (!t->rrip_version_1_10) {
+        /*
+        According to RRIP 1.12 this is the future form:
+        4.3 "Specification of the ER System Use Entry Values for RRIP"
+        talks of "IEEE_P1282" in each of the three strings and finally states
+        "Note: Upon adoption as an IEEE standard, these lengths will each
+         decrease by 1."
+        So "IEEE_P1282" would be the new form, "RRIP_1991A" is the old form.
+        */
+        ER = malloc(182);
         if (ER == NULL) {
             return ISO_OUT_OF_MEM;
         }
@@ -485,6 +502,40 @@ int rrip_add_ER(Ecma119Image *t, struct susp_info *susp)
             "FILE SYSTEM SEMANTICS.", 72);
         memcpy(&ER[89], "PLEASE CONTACT THE IEEE STANDARDS DEPARTMENT, "
             "PISCATAWAY, NJ, USA FOR THE 1282 SPECIFICATION.", 93);
+    } else {
+        /*
+        RRIP 1.09 and 1.10: 
+        4.3 Specification of the ER System Use Field Values for RRIP
+        The Extension Version number for the version of the RRIP defined herein
+        shall be 1. The content of the Extension Identifier field shall be
+        "RRIP_1991A". The Identifier Length shall be 10. The recommended
+        content of the Extension Descriptor shall be "THE ROCK RIDGE
+        INTERCHANGE PROTOCOL PROVIDES SUPPORT FOR POSIX FILE SYSTEM SEMANTICS."
+        The corresponding Description Length is 84.
+        The recommended content of the Extension Source shall be "PLEASE
+        CONTACT DISC PUBLISHER FOR SPECIFICATION SOURCE.  SEE PUBLISHER
+        IDENTIFIER IN PRIMARY VOLUME DESCRIPTOR FOR CONTACT INFORMATION."
+        The corresponding Source Length is 135.
+        */
+
+        ER = malloc(237);
+        if (ER == NULL) {
+            return ISO_OUT_OF_MEM;
+        }
+
+        ER[0] = 'E';
+        ER[1] = 'R';
+        ER[2] = 237;
+        ER[3] = 1;
+        ER[4] = 10;
+        ER[5] = 84;
+        ER[6] = 135;
+        ER[7] = 1;
+
+        memcpy(&ER[8], "RRIP_1991A", 10);
+        memcpy(&ER[18], "THE ROCK RIDGE INTERCHANGE PROTOCOL PROVIDES SUPPORT FOR POSIX FILE SYSTEM SEMANTICS", 84);
+        memcpy(&ER[102], "PLEASE CONTACT DISC PUBLISHER FOR SPECIFICATION SOURCE.  SEE PUBLISHER IDENTIFIER IN PRIMARY VOLUME DESCRIPTOR FOR CONTACT INFORMATION.", 135);
+    }
 
     /** This always goes to continuation area */
     return susp_append_ce(t, susp, ER);