From 58bd592536cbf491ff6f89b73b5c95beb4859e42 Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu, 5 Dec 2019 14:56:06 -0300
Subject: Fix return code for __libc_signal_* functions

The functions do not fail regardless of the argument value.  Also, for
Linux the return value is not correct on some platforms due the missing
usage of INTERNAL_SYSCALL_ERROR_P / INTERNAL_SYSCALL_ERRNO macros.

Checked on x86_64-linux-gnu, i686-linux-gnu, and sparc64-linux-gnu.
---
 sysdeps/generic/internal-signals.h         | 12 ++++++------
 sysdeps/unix/sysv/linux/internal-signals.h | 18 +++++++++---------
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/sysdeps/generic/internal-signals.h b/sysdeps/generic/internal-signals.h
index a515e3e..41c24dc 100644
--- a/sysdeps/generic/internal-signals.h
+++ b/sysdeps/generic/internal-signals.h
@@ -34,28 +34,28 @@ __clear_internal_signals (sigset_t *set)
 {
 }
 
-static inline int
+static inline void
 __libc_signal_block_all (sigset_t *set)
 {
   sigset_t allset;
   __sigfillset (&allset);
-  return __sigprocmask (SIG_BLOCK, &allset, set);
+  __sigprocmask (SIG_BLOCK, &allset, set);
 }
 
-static inline int
+static inline void
 __libc_signal_block_app (sigset_t *set)
 {
   sigset_t allset;
   __sigfillset (&allset);
   __clear_internal_signals (&allset);
-  return __sigprocmask (SIG_BLOCK, &allset, set);
+  __sigprocmask (SIG_BLOCK, &allset, set);
 }
 
 /* Restore current process signal mask.  */
-static inline int
+static inline void
 __libc_signal_restore_set (const sigset_t *set)
 {
-  return __sigprocmask (SIG_SETMASK, set, NULL);
+  __sigprocmask (SIG_SETMASK, set, NULL);
 }
 
 
diff --git a/sysdeps/unix/sysv/linux/internal-signals.h b/sysdeps/unix/sysv/linux/internal-signals.h
index a496c71..2932e21 100644
--- a/sysdeps/unix/sysv/linux/internal-signals.h
+++ b/sysdeps/unix/sysv/linux/internal-signals.h
@@ -59,32 +59,32 @@ static const sigset_t sigall_set = {
 };
 
 /* Block all signals, including internal glibc ones.  */
-static inline int
+static inline void
 __libc_signal_block_all (sigset_t *set)
 {
   INTERNAL_SYSCALL_DECL (err);
-  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &sigall_set,
-			   set, _NSIG / 8);
+  INTERNAL_SYSCALL_CALL (rt_sigprocmask, err, SIG_BLOCK, &sigall_set, set,
+			 _NSIG / 8);
 }
 
 /* Block all application signals (excluding internal glibc ones).  */
-static inline int
+static inline void
 __libc_signal_block_app (sigset_t *set)
 {
   sigset_t allset = sigall_set;
   __clear_internal_signals (&allset);
   INTERNAL_SYSCALL_DECL (err);
-  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &allset,
-			   set, _NSIG / 8);
+  INTERNAL_SYSCALL_CALL (rt_sigprocmask, err, SIG_BLOCK, &allset, set,
+			 _NSIG / 8);
 }
 
 /* Restore current process signal mask.  */
-static inline int
+static inline void
 __libc_signal_restore_set (const sigset_t *set)
 {
   INTERNAL_SYSCALL_DECL (err);
-  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, set, NULL,
-			   _NSIG / 8);
+  INTERNAL_SYSCALL_CALL (rt_sigprocmask, err, SIG_SETMASK, set, NULL,
+			 _NSIG / 8);
 }
 
 /* Used to communicate with signal handler.  */
-- 
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