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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 bc26c99ef73a51176d7fd072d2a919c5231510c8..43b903d5f9c308b7fc9afcec1b61f725d348e5db 100644 (file)
--- a/sysdeps/unix/sysv/linux/setegid.c
+++ b/sysdeps/unix/sysv/linux/setegid.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998,2000,2002,2003,2004,2006 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
@@ -13,48 +13,29 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
 #include <unistd.h>
 #include <setxid.h>
-#include <kernel-features.h>
 
 
-#if defined __NR_setresgid || __ASSUME_SETRESGID_SYSCALL > 0
-
-extern int __setresgid (gid_t rgid, gid_t egid, gid_t sgid);
-
 int
 setegid (gid_t gid)
 {
   int result;
 
   if (gid == (gid_t) ~0)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
 
-# if __ASSUME_32BITUIDS > 0 && defined __NR_setresgid32
+#ifdef __NR_setresgid32
   result = INLINE_SETXID_SYSCALL (setresgid32, 3, -1, gid, -1);
-# else
-  /* First try the syscall.  */
+#else
   result = INLINE_SETXID_SYSCALL (setresgid, 3, -1, gid, -1);
-#  if __ASSUME_SETRESGID_SYSCALL == 0
-  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);
-#  endif
-# endif
+#endif
 
   return result;
 }
 #ifndef setegid
 libc_hidden_def (setegid)
 #endif
-#else
-# include <sysdeps/unix/bsd/setegid.c>
-#endif