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Diffstat (limited to 'libc/sysdeps/linux/common/sigqueue.c')
-rw-r--r--libc/sysdeps/linux/common/sigqueue.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/sigqueue.c b/libc/sysdeps/linux/common/sigqueue.c
new file mode 100644
index 000000000..01fdb6d39
--- /dev/null
+++ b/libc/sysdeps/linux/common/sigqueue.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1997, 1998, 2000, 2003, 2005 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/syscall.h>
+
+libc_hidden_proto(getpid)
+libc_hidden_proto(getuid)
+
+#ifdef __NR_rt_sigqueueinfo
+
+# define __NR___libc_rt_sigqueueinfo __NR_rt_sigqueueinfo
+static inline _syscall3(int, __libc_rt_sigqueueinfo, pid_t, pid, int, sig, void*, value);
+
+/* Return any pending signal or wait for one for the given time. */
+int __sigqueue (pid_t pid, int sig, const union sigval val)
+{
+ siginfo_t info;
+
+ /* First, clear the siginfo_t structure, so that we don't pass our
+ stack content to other tasks. */
+ memset (&info, 0, sizeof (siginfo_t));
+ /* We must pass the information about the data in a siginfo_t value. */
+ info.si_signo = sig;
+ info.si_code = SI_QUEUE;
+ info.si_pid = getpid ();
+ info.si_uid = getuid ();
+ info.si_value = val;
+
+ return __libc_rt_sigqueueinfo(pid, sig, __ptrvalue (&info));
+}
+weak_alias (__sigqueue, sigqueue)
+#endif