[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/signal/sighold.c b/ap/build/uClibc/libc/signal/sighold.c
new file mode 100644
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+++ b/ap/build/uClibc/libc/signal/sighold.c
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+/* Add SIG to the calling process' signal mask.
+ Copyright (C) 1998, 2000, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define __need_NULL
+#include <stddef.h>
+#include <signal.h>
+
+
+int sighold (int sig)
+{
+ sigset_t set;
+
+ /* Retrieve current signal set. */
+ sigprocmask (SIG_SETMASK, NULL, &set); /* can't fail */
+
+ /* Bound-check sig, add it to the set. */
+ if (sigaddset (&set, sig) < 0)
+ return -1;
+
+ /* Set the new mask. */
+ return sigprocmask (SIG_SETMASK, &set, NULL);
+}