+--- rpm-4.16.0/rpmio/rpmio.c~ 2020-08-27 15:13:08.000000000 +0200
++++ rpm-4.16.0/rpmio/rpmio.c 2020-11-08 21:31:26.311430982 +0100
+@@ -1709,6 +1709,22 @@
+ }
+ b[blen] = '\0';
+ }
++#if defined(__linux__)
++ /* XXX st->st_size = 0 for /proc files on linux, see stat(2). */
++ /* XXX glibc mmap'd libio no workie for /proc files on linux?!? */
++ else if (!strncmp(fn, "/proc/", sizeof("/proc/")-1)) {
++ blen = blenmax;
++ b = xmalloc(blen+1);
++ b[0] = '\0';
++
++ size = read(Fileno(fd), b, blen);
++ if (size < 0) {
++ rc = 1;
++ goto exit;
++ }
++ blen = size;
++ }
++#endif
+
+ exit:
+ if (fd) (void) Fclose(fd);