base/SOURCES/rpm-4.10.90-rpmlib-filesystem-check.patch

diff -up rpm-4.10.90.git11978/lib/depends.c.rpmlib-filesystem-check rpm-4.10.90.git11978/lib/depends.c
--- rpm-4.10.90.git11978/lib/depends.c.rpmlib-filesystem-check	2012-11-01 09:40:26.000000000 +0200
+++ rpm-4.10.90.git11978/lib/depends.c	2012-11-05 10:53:42.294733695 +0200
@@ -537,6 +537,109 @@ static int rpmdbProvides(rpmts ts, depCa
     return rc;
 }
 
+/*
+ * Temporary support for live-conversion of the filesystem hierarchy
+ *   mailto: kay@redhat.com, harald@redhat.com
+ *   https://fedoraproject.org/wiki/Features/UsrMove
+ *
+ *   X-CheckUnifiedSystemdir:
+ *     /bin, /sbin, /lib, /lib64 --> /usr
+ *
+ *   X-CheckUnifiedBindir:
+ *     /usr/sbin -> /usr/bin
+ *
+ *   X-CheckMultiArchLibdir:
+ *     /usr/lib64 /usr/lib/<platform tuple> (e.g. x86_64-linux-gnu)
+ *
+ * This code is not needed for new installations, it can be removed after
+ * updates from older systems are no longer supported: Fedora 19 / RHEL 8.
+ */
+
+static int CheckLink(const char *dir, const char *root)
+{
+    char *d = NULL;
+    struct stat sbuf;
+    int rc = 0;
+
+    if (!root)
+	root = "/";
+
+    rasprintf(&d, "%s%s", root, dir);
+    if (!d) {
+	rc = -1;
+	goto exit;
+    }
+
+    /* directory or symlink does not exist, all is fine */
+    if (lstat(d, &sbuf) < 0) {
+	rc = 1;
+	goto exit;
+    }
+
+    /* if it is a symlink, all is fine */
+    if (S_ISLNK(sbuf.st_mode))
+	rc = 1;
+
+exit:
+    free(d);
+    return rc;
+}
+
+static int CheckFilesystemHierarchy(rpmds * dsp, const char *root)
+{
+    static const char *dirs[] = { "bin", "sbin", "lib", "lib64" };
+    int check;
+    int i;
+    rpmds ds;
+    rpmstrPool pool = rpmdsPool(*dsp);
+    int rc = 0;
+
+    for (i = 0; i < sizeof(dirs) / sizeof(dirs[0]); i++) {
+	check = CheckLink(dirs[i], root);
+	if (check < 0) {
+	    rc = -1;
+	    goto exit;
+	}
+
+	if (check == 0)
+	    goto exit;
+    }
+    ds = rpmdsSinglePool(pool, RPMTAG_PROVIDENAME,
+			 "rpmlib(X-CheckUnifiedSystemdir)", "1",
+			 RPMSENSE_EQUAL);
+    rpmdsMerge(dsp, ds);
+    rpmdsFree(ds);
+
+    check = CheckLink("usr/lib64", root);
+    if (check < 0) {
+        rc = -1;
+        goto exit;
+    }
+    if (check > 0) {
+	ds = rpmdsSinglePool(pool, RPMTAG_PROVIDENAME,
+			     "rpmlib(X-CheckMultiArchLibdir)", "1",
+			     RPMSENSE_EQUAL);
+	rpmdsMerge(dsp, ds);
+	rpmdsFree(ds);
+    }
+
+    check = CheckLink("usr/sbin", root);
+    if (check < 0) {
+	rc = -1;
+	goto exit;
+    }
+    if (check > 0) {
+	ds = rpmdsSinglePool(pool, RPMTAG_PROVIDENAME,
+			     "rpmlib(X-CheckUnifiedBindir)", "1",
+			     RPMSENSE_EQUAL);
+	rpmdsMerge(dsp, ds);
+	rpmdsFree(ds);
+    }
+
+exit:
+    return rc;
+}
+
 /**
  * Check dep for an unsatisfied dependency.
  * @param ts		transaction set
@@ -560,8 +663,10 @@ retry:
      * Check those dependencies now.
      */
     if (dsflags & RPMSENSE_RPMLIB) {
-	if (tsmem->rpmlib == NULL)
+	if (tsmem->rpmlib == NULL) {
 	    rpmdsRpmlibPool(rpmtsPool(ts), &(tsmem->rpmlib), NULL);
+	    CheckFilesystemHierarchy(&(tsmem->rpmlib), rpmtsRootDir(ts));
+	}
 	
 	if (tsmem->rpmlib != NULL && rpmdsSearch(tsmem->rpmlib, dep) >= 0) {
 	    rpmdsNotify(dep, "(rpmlib provides)", rc);