random: export __trivfs_server_name

Making glibc access trivfs_server_name would violate namespace
constraints, so we need to use a out-of-standard name.

trans/Makefile

@@ -81,6 +81,7 @@ symlink: fsysServer.o
 fakeroot: ../libnetfs/libnetfs.a
 fifo new-fifo: ../libpipe/libpipe.a
 crash fifo firmlink hello hello-mt ifsock magic mtab new-fifo null password proxy-defpager remap streamio: ../libtrivfs/libtrivfs.a
+random-LDFLAGS = -Wl,--export-dynamic-symbol=__trivfs_server_name
 $(targets): ../libfshelp/libfshelp.a \
 	../libihash/libihash.a \
 	../libiohelp/libiohelp.a \

trans/random.c

@@ -46,6 +46,9 @@
 
 char *trivfs_server_name = "random";
 
+/* Referred by glibc to avoid using /dev/random for malloc() initialization */
+char *__trivfs_server_name = "random";
+
 /* Entropy pool.  We use one of the SHAKE algorithms from the Keccak
    family.  Being a sponge construction, it allows the extraction of
    arbitrary amounts of pseudorandom data.  */