aboutsummaryrefslogtreecommitdiff
path: root/signal
diff options
context:
space:
mode:
Diffstat (limited to 'signal')
-rw-r--r--signal/Makefile5
-rw-r--r--signal/sighold.c39
-rw-r--r--signal/signal.h19
-rw-r--r--signal/sigrelse.c39
4 files changed, 99 insertions, 3 deletions
diff --git a/signal/Makefile b/signal/Makefile
index 29aeea5f2b..0642f75718 100644
--- a/signal/Makefile
+++ b/signal/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98 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
@@ -33,7 +33,8 @@ routines := signal raise killpg \
sigreturn \
siggetmask sysv_signal \
sigisempty sigandset sigorset \
- allocrtsig sigtimedwait sigwaitinfo sigqueue
+ allocrtsig sigtimedwait sigwaitinfo sigqueue \
+ sighold sigrelse sigignore sigset
tests := tst-signal
diff --git a/signal/sighold.c b/signal/sighold.c
new file mode 100644
index 0000000000..d2cb537912
--- /dev/null
+++ b/signal/sighold.c
@@ -0,0 +1,39 @@
+/* Add SIG to the calling process' signal mask.
+ Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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.
+
+ 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. */
+
+#include <signal.h>
+
+int
+sighold (sig)
+ int sig;
+{
+ sigset_t set;
+
+ /* Retrieve current signal set. */
+ if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0)
+ return -1;
+
+ /* Add the specified signal. */
+ if (sigaddset (&set, sig) < 0)
+ return -1;
+
+ /* Set the new mask. */
+ return __sigprocmask (SIG_SETMASK, &set, NULL);
+}
diff --git a/signal/signal.h b/signal/signal.h
index 589b870806..864a49b6e1 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,93,94,95,96,97,98 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
@@ -345,6 +345,23 @@ extern int sigaltstack __P ((__const struct sigaltstack *__ss,
#endif /* signal.h included and use BSD or X/Open Unix. */
+#if defined _SIGNAL_H && defined __USE_UNIX98
+/* Simplified interface for signal management. */
+
+/* Add SIG to the calling process' signal mask. */
+extern int sighold __P ((int __sig));
+
+/* Remove SIG from the calling process' signal mask. */
+extern int sigrelse __P ((int __sig));
+
+/* Set the disposition of SIG to SIG_IGN. */
+extern int sigignore __P ((int __sig));
+
+/* Set the disposition of SIG. */
+extern __sighandler_t sigset __P ((int __sig, __sighandler_t __disp));
+#endif
+
+
/* The following functions are used internally in the C library and in
other code which need deep insights. */
diff --git a/signal/sigrelse.c b/signal/sigrelse.c
new file mode 100644
index 0000000000..44e1001a06
--- /dev/null
+++ b/signal/sigrelse.c
@@ -0,0 +1,39 @@
+/* Remove SIG from the calling process' signal mask.
+ Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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.
+
+ 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. */
+
+#include <signal.h>
+
+int
+sigrelse (sig)
+ int sig;
+{
+ sigset_t set;
+
+ /* Retrieve current signal set. */
+ if (sigprocmask (SIG_SETMASK, NULL, &set) < 0)
+ return -1;
+
+ /* Remove the specified signal. */
+ if (sigdelset (&set, sig) < 0)
+ return -1;
+
+ /* Set the new mask. */
+ return sigprocmask (SIG_SETMASK, &set, NULL);
+}