nptl: Move pthread_sigmask implementation to libc

This is part of the libpthread removal project:

  <https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>

A new symbol version is added on libc to force loading failure
instead of lazy binding one for newly binaries with old loaders.

Checked with a build against all affected ABIs.

61 files changed, 77 insertions, 34 deletions

diff --git a/nptl/Makefile b/nptl/Makefile
index e554a3898d..4816fa254e 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -59,6 +59,7 @@ routines = \
   pthread_getschedparam \
   pthread_self \
   pthread_setschedparam \
+  pthread_sigmask \
   register-atfork \
 
 shared-only-routines = forward
@@ -123,7 +124,7 @@ libpthread-routines = nptl-init nptlfreeres vars events version pt-interp \
 		      pthread_barrierattr_setpshared \
 		      pthread_key_create pthread_key_delete \
 		      pthread_getspecific pthread_setspecific \
-		      pthread_sigmask pthread_kill pthread_sigqueue \
+		      pthread_kill pthread_sigqueue \
 		      pthread_cancel pthread_testcancel \
 		      pthread_setcancelstate pthread_setcanceltype \
 		      pthread_once \
diff --git a/nptl/Versions b/nptl/Versions
index 543dddc4ee..f7140277f5 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -16,6 +16,7 @@ libc {
     pthread_mutex_lock; pthread_mutex_unlock;
     pthread_self;
     pthread_setcancelstate; pthread_setcanceltype;
+    pthread_sigmask;
   }
   GLIBC_2.1 {
     pthread_attr_init;
@@ -32,6 +33,9 @@ libc {
   GLIBC_2.28 {
     thrd_current; thrd_equal; thrd_sleep; thrd_yield;
   }
+  GLIBC_2.32 {
+    pthread_sigmask;
+  }
   GLIBC_PRIVATE {
     __libc_alloca_cutoff;
     # Internal libc interface to libpthread
diff --git a/nptl/pthread_sigmask.c b/nptl/pthread_sigmask.c
index c7860e02a5..035104453f 100644
--- a/nptl/pthread_sigmask.c
+++ b/nptl/pthread_sigmask.c
@@ -16,14 +16,13 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
 #include <signal.h>
 #include <pthreadP.h>
 #include <sysdep.h>
-
+#include <shlib-compat.h>
 
 int
-pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
+__pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
 {
   sigset_t local_newmask;
 
@@ -47,3 +46,9 @@ pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
 	  ? INTERNAL_SYSCALL_ERRNO (result)
 	  : 0);
 }
+
+versioned_symbol (libc, __pthread_sigmask, pthread_sigmask, GLIBC_2_32);
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_32)
+strong_alias (__pthread_sigmask, __pthread_sigmask_2);
+compat_symbol (libc, __pthread_sigmask_2, pthread_sigmask, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index a4c31932cb..41bb214bb9 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -1447,6 +1447,7 @@ GLIBC_2.17 pthread_self F
 GLIBC_2.17 pthread_setcancelstate F
 GLIBC_2.17 pthread_setcanceltype F
 GLIBC_2.17 pthread_setschedparam F
+GLIBC_2.17 pthread_sigmask F
 GLIBC_2.17 ptrace F
 GLIBC_2.17 ptsname F
 GLIBC_2.17 ptsname_r F
@@ -2145,3 +2146,4 @@ GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
+GLIBC_2.32 pthread_sigmask F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libpthread.abilist b/sysdeps/unix/sysv/linux/aarch64/libpthread.abilist
index d65beba958..48b368acb1 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libpthread.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libpthread.abilist
@@ -156,7 +156,6 @@ GLIBC_2.17 pthread_setconcurrency F
 GLIBC_2.17 pthread_setname_np F
 GLIBC_2.17 pthread_setschedprio F
 GLIBC_2.17 pthread_setspecific F
-GLIBC_2.17 pthread_sigmask F
 GLIBC_2.17 pthread_sigqueue F
 GLIBC_2.17 pthread_spin_destroy F
 GLIBC_2.17 pthread_spin_init F
diff --git a/sysdeps/unix/sysv/linux/alpha/Makefile b/sysdeps/unix/sysv/linux/alpha/Makefile
index 2e132e474b..92484bbe65 100644
--- a/sysdeps/unix/sysv/linux/alpha/Makefile
+++ b/sysdeps/unix/sysv/linux/alpha/Makefile
@@ -31,9 +31,9 @@ libm-routines += multc3 divtc3
 endif   # math
 
 ifeq ($(subdir),nptl)
-# pull in __syscall_error routine, __sigprocmask, sigaction stubs.
-libpthread-routines += sysdep sigprocmask rt_sigaction
-libpthread-shared-only-routines += sysdep sigprocmask rt_sigaction
+# pull in __syscall_error routine, sigaction stubs.
+libpthread-routines += sysdep rt_sigaction
+libpthread-shared-only-routines += sysdep rt_sigaction
 endif
 
 ifeq ($(subdir),conform)
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index e7f2174ac2..6430af207f 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -891,6 +891,7 @@ GLIBC_2.0 pthread_self F
 GLIBC_2.0 pthread_setcancelstate F
 GLIBC_2.0 pthread_setcanceltype F
 GLIBC_2.0 pthread_setschedparam F
+GLIBC_2.0 pthread_sigmask F
 GLIBC_2.0 ptrace F
 GLIBC_2.0 putc F
 GLIBC_2.0 putc_unlocked F
@@ -2225,6 +2226,7 @@ GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
+GLIBC_2.32 pthread_sigmask F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/alpha/libpthread.abilist b/sysdeps/unix/sysv/linux/alpha/libpthread.abilist
index ffd443422d..cfffc5f529 100644
--- a/sysdeps/unix/sysv/linux/alpha/libpthread.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libpthread.abilist
@@ -71,7 +71,6 @@ GLIBC_2.0 pthread_once F
 GLIBC_2.0 pthread_setcancelstate F
 GLIBC_2.0 pthread_setcanceltype F
 GLIBC_2.0 pthread_setspecific F
-GLIBC_2.0 pthread_sigmask F
 GLIBC_2.0 pthread_testcancel F
 GLIBC_2.0 raise F
 GLIBC_2.0 read F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index b152c0e24a..f4ea1756d5 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -133,6 +133,7 @@ GLIBC_2.30 twalk_r F
 GLIBC_2.31 msgctl F
 GLIBC_2.31 semctl F
 GLIBC_2.31 shmctl F
+GLIBC_2.32 pthread_sigmask F
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
 GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
@@ -1517,6 +1518,7 @@ GLIBC_2.4 pthread_self F
 GLIBC_2.4 pthread_setcancelstate F
 GLIBC_2.4 pthread_setcanceltype F
 GLIBC_2.4 pthread_setschedparam F
+GLIBC_2.4 pthread_sigmask F
 GLIBC_2.4 ptrace F
 GLIBC_2.4 ptsname F
 GLIBC_2.4 ptsname_r F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libpthread.abilist b/sysdeps/unix/sysv/linux/arm/be/libpthread.abilist
index 129c64b0a7..050e799de8 100644
--- a/sysde