[glibc/fw/builtin-syscalls-4] hurd: Do not make sigprocmask available in ld.so

[Florian Weimer <fw@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3dcad8158f43d71d5b8f6f317f82952ddf3468f3

commit 3dcad8158f43d71d5b8f6f317f82952ddf3468f3
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Dec 18 10:27:10 2019 +0100

    hurd: Do not make sigprocmask available in ld.so
    
    After commit f7649d5780aa4682393b9daedd653e4d9c12784c ("dlopen: Do not
    block signals"), the dynamic linker no longer uses sigprocmask, which
    means that it does not have to be made available explicitly on hurd.
    
    This reverts commit 892badc9bbcd4a6f8c2eb6c8a99be3aa22517532
    ("hurd: Make __sigprocmask GLIBC_PRIVATE") and commit
    d5ed9ba29a3c818b3433a1784862494968abda45 ("hurd: Fix ld.so link"),
    but keeps the comment changes from the second commit.

Diff:
---
 sysdeps/mach/hurd/Versions           | 4 ++--
 sysdeps/mach/hurd/dl-sysdep.c        | 8 --------
 sysdeps/mach/hurd/i386/localplt.data | 1 -
 3 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/sysdeps/mach/hurd/Versions b/sysdeps/mach/hurd/Versions
index 6ddd297..35257a0 100644
--- a/sysdeps/mach/hurd/Versions
+++ b/sysdeps/mach/hurd/Versions
@@ -10,7 +10,7 @@ libc {
   GLIBC_PRIVATE {
     # Functions shared with the dynamic linker
     __access; __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
-    __libc_lock_self0; __sigprocmask; __getcwd;
+    __libc_lock_self0; __getcwd;
 
     _dl_init_first;
     __close_nocancel_nostatus;
@@ -42,6 +42,6 @@ ld {
 
     # functions that must be shared with libc
     __access; __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
-    __libc_lock_self0; __sigprocmask; __getcwd;
+    __libc_lock_self0; __getcwd;
   }
 }
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index fcbbe6a..33fe8c3 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -675,14 +675,6 @@ strong_alias (abort, __GI___chk_fail)
 strong_alias (abort, __GI___fortify_fail)
 strong_alias (abort, __GI___assert_fail)
 strong_alias (abort, __GI___assert_perror_fail)
-
-check_no_hidden(__sigprocmask);
-int weak_function
-__sigprocmask (int how, const sigset_t *set, sigset_t *oset)
-{
-  /* We do not have signals yet at this stage.  */
-  return 0;
-}
 \f
 /* This function is called by interruptible RPC stubs.  For initial
    dynamic linking, just use the normal mach_msg.  Since this defn is
diff --git a/sysdeps/mach/hurd/i386/localplt.data b/sysdeps/mach/hurd/i386/localplt.data
index b89e04b..c1725d1 100644
--- a/sysdeps/mach/hurd/i386/localplt.data
+++ b/sysdeps/mach/hurd/i386/localplt.data
@@ -40,7 +40,6 @@ ld.so: __sbrk
 ld.so: __strtoul_internal
 #ld.so: _exit
 ld.so: abort
-ld.so: __sigprocmask
 ld.so: _hurd_intr_rpc_mach_msg
 ld.so: __errno_location
 # rtld_hidden is currently disabled to avoid having to special-case the