From 91b6eb1140eda6bab324821ee3785e5d0ca155b8 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 2 Jun 2017 11:59:28 +0200 Subject: Add internal facility for dynamic array handling This is intended as a type-safe alternative to obstacks and hand-written realloc constructs. The implementation avoids writing function pointers to the heap. --- support/xdup2.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 support/xdup2.c (limited to 'support/xdup2.c') diff --git a/support/xdup2.c b/support/xdup2.c new file mode 100644 index 0000000000..dc08c94518 --- /dev/null +++ b/support/xdup2.c @@ -0,0 +1,28 @@ +/* dup2 with error checking. + Copyright (C) 2017 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 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include + +#include + +void +xdup2 (int from, int to) +{ + if (dup2 (from, to) < 0) + FAIL_EXIT1 ("dup2 (%d, %d): %m", from, to); +} -- cgit v1.2.3-70-g09d2