nptl: Replace some stubs with the Linux implementation

The stubs for pthread_getaffinity_np, pthread_getname_np,
pthread_setaffinity_np, pthread_setname_np are replaced, and corresponding
tests are moved.

After the removal of the NaCl port, nptl is Linux-specific, and the stubs
are no longer needed.  This effectively reverts commit
c76d1ff5149bd03210f2bb8cd64446c51618d016 ("NPTL: Add stubs for Linux-only
extension functions.").

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 34 insertions, 8 deletions

diff --git a/nptl/pthread_getaffinity.c b/nptl/pthread_getaffinity.c
index 2ba05b5b92..cf6ecfe01f 100644
--- a/nptl/pthread_getaffinity.c
+++ b/nptl/pthread_getaffinity.c
@@ -1,6 +1,6 @@
-/* Get the processor affinity of a thread.  Stub version.
-   Copyright (C) 2014-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -16,17 +16,43 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
+#include <limits.h>
 #include <pthreadP.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <shlib-compat.h>
+
 
 int
-__pthread_getaffinity_np (pthread_t th, size_t cpusetsize, cpu_set_t *cpuset)
+__pthread_getaffinity_new (pthread_t th, size_t cpusetsize, cpu_set_t *cpuset)
 {
   const struct pthread *pd = (const struct pthread *) th;
 
-  if (INVALID_TD_P (pd))
-    return ESRCH;
+  int res = INTERNAL_SYSCALL_CALL (sched_getaffinity, pd->tid,
+				   MIN (INT_MAX, cpusetsize), cpuset);
+  if (INTERNAL_SYSCALL_ERROR_P (res))
+    return INTERNAL_SYSCALL_ERRNO (res);
+
+  /* Clean the rest of the memory the kernel didn't do.  */
+  memset ((char *) cpuset + res, '\0', cpusetsize - res);
+
+  return 0;
+}
+strong_alias (__pthread_getaffinity_new, __pthread_getaffinity_np)
+versioned_symbol (libpthread, __pthread_getaffinity_new,
+		  pthread_getaffinity_np, GLIBC_2_3_4);
 
-  return ENOSYS;
+
+#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4)
+int
+__pthread_getaffinity_old (pthread_t th, cpu_set_t *cpuset)
+{
+  /* The old interface by default assumed a 1024 processor bitmap.  */
+  return __pthread_getaffinity_new (th, 128, cpuset);
 }
-weak_alias (__pthread_getaffinity_np, pthread_getaffinity_np)
-stub_warning (pthread_getaffinity_np)
+compat_symbol (libpthread, __pthread_getaffinity_old, pthread_getaffinity_np,
+	       GLIBC_2_3_3);
+#endif