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[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / setegid.c

diff --git a/sysdeps/unix/sysv/linux/setegid.c b/sysdeps/unix/sysv/linux/setegid.c
index 3fa5cc055fb5203e3ac26a9d2ea12fae5cdcc0b3..43b903d5f9c308b7fc9afcec1b61f725d348e5db 100644 (file)
--- a/sysdeps/unix/sysv/linux/setegid.c
+++ b/sysdeps/unix/sysv/linux/setegid.c
@@ -1,29 +1,24 @@
-/* Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
 
    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
 #include <unistd.h>
+#include <setxid.h>
 
-#ifdef __NR_setresgid
-
-extern int __setresgid (gid_t rgid, gid_t egid, gid_t sgid);
 
 int
 setegid (gid_t gid)
@@ -31,21 +26,16 @@ setegid (gid_t gid)
   int result;
 
   if (gid == (gid_t) ~0)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-
-  /* First try the syscall.  */
-  result = __setresgid (-1, gid, -1);
-  if (result == -1 && errno == ENOSYS)
-    /* No system call available.  Use emulation.  This may not work
-       since `setregid' also sets the saved group ID when GID is not
-       equal to the real group ID, making it impossible to switch back. */
-    result = __setregid (-1, gid);
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+#ifdef __NR_setresgid32
+  result = INLINE_SETXID_SYSCALL (setresgid32, 3, -1, gid, -1);
+#else
+  result = INLINE_SETXID_SYSCALL (setresgid, 3, -1, gid, -1);
+#endif
 
   return result;
 }
-#else
-# include <sysdeps/unix/bsd/setegid.c>
+#ifndef setegid
+libc_hidden_def (setegid)
 #endif