Blob Blame Raw
diff --git a/lib/depends.c b/lib/depends.c
index 69aecbb..5101d32 100644
--- a/lib/depends.c
+++ b/lib/depends.c
@@ -386,6 +386,108 @@ static int rpmdbProvides(rpmts ts, depCache dcache, rpmds dep)
     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;
+    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 = rpmdsSingle(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 = rpmdsSingle(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 = rpmdsSingle(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
@@ -410,9 +512,11 @@ retry:
      */
     if (dsflags & RPMSENSE_RPMLIB) {
 	static int oneshot = -1;
-	if (oneshot) 
+	if (oneshot) {
 	    oneshot = rpmdsRpmlib(&rpmlibP, NULL);
-	
+	    CheckFilesystemHierarchy(&rpmlibP, rpmtsRootDir(ts));
+	}
+
 	if (rpmlibP != NULL && rpmdsSearch(rpmlibP, dep) >= 0) {
 	    rpmdsNotify(dep, "(rpmlib provides)", rc);
 	    goto exit;