xcat-dep/syslinux/syslinux-3.86-multibootif.patch

diff -urN syslinux-3.86/com32/mboot/mboot.c syslinux-3.86-multibootif/com32/mboot/mboot.c
--- syslinux-3.86/com32/mboot/mboot.c	2010-03-31 12:24:25.000000000 -0400
+++ syslinux-3.86-multibootif/com32/mboot/mboot.c	2010-05-14 21:15:43.000000000 -0400
@@ -93,9 +93,18 @@
     char **argp, **argx;
     struct module_data *mp;
     int rv;
+    int firstmod = 1;
     int module_count = 1;
     int arglen;
     const char module_separator[] = "---";
+    com32sys_t reg;
+    char *bootifstr;
+    reg.eax.w[0] = 0x000f; /* Get IPAPPEND strings */
+    __intcall(0x22,&reg,&reg);
+    if (!(reg.eflags.l & EFLAGS_CF)) {
+	    bootifstr = MK_PTR(reg.es,
+		    *(uint16_t *) MK_PTR(reg.es, reg.ebx.w[0] + 2));
+    }   /* bootifstr would now be like BOOTIF= argument */
 
     for (argp = argv; *argp; argp++) {
 	if (!strcmp(*argp, module_separator))
@@ -130,15 +139,29 @@
 	    arglen += strlen(*argx) + 1;
 
 	if (arglen == 0) {
-	    mp->cmdline = strdup("");
+	    if (firstmod) { /* first module, let's add BOOTIF to the command line */
+		        firstmod=0;
+                mp->cmdline = strdup(bootifstr);
+           } else {
+	        mp->cmdline = strdup("");
+           }
 	} else {
 	    char *p;
+        if (firstmod) { 
+           arglen += strlen(bootifstr) + 1;
+        }
 	    mp->cmdline = p = malloc(arglen);
 	    for (; *argp && strcmp(*argp, module_separator); argp++) {
 		p = strpcpy(p, *argp);
 		*p++ = ' ';
 	    }
-	    *--p = '\0';
+        if (firstmod) { /* first module, let's add BOOTIF to the command line */
+    		firstmod=0;
+	    	p = strpcpy(p,bootifstr);
+	    	*p = '\0';
+	    } else {
+	    	*--p = '\0';
+	    }
 	}
 	mp++;
 	if (*argp)