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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2008-10-10 17:10:26 +0000
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2008-10-10 17:10:26 +0000
commit8e36b7ce609efb05ecfba3e055a8eef7d8873a15 (patch)
tree7d13c6a2c1f452e5817ddcf5697110a0fb0205cb /libc/sysdeps/linux/common
parent840d49dc036274b0fded03b30c8d4a92c432378e (diff)
- add signalfd()
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/Makefile.in4
-rw-r--r--libc/sysdeps/linux/common/signalfd.c38
2 files changed, 40 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index d9c3116e9..521e561fd 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -34,8 +34,8 @@ CSRC := $(filter-out inotify.c ioperm.c iopl.c madvise.c \
modify_ldt.c personality.c prctl.c readahead.c reboot.c \
remap_file_pages.c sched_getaffinity.c sched_setaffinity.c \
sendfile64.c sendfile.c setfsgid.c setfsuid.c setresuid.c \
- splice.c vmsplice.c tee.c swapoff.c swapon.c sync_file_range.c \
- sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
+ splice.c vmsplice.c tee.c signalfd.c swapoff.c swapon.c \
+ sync_file_range.c sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
endif
ifneq ($(UCLIBC_BSD_SPECIFIC),y)
diff --git a/libc/sysdeps/linux/common/signalfd.c b/libc/sysdeps/linux/common/signalfd.c
new file mode 100644
index 000000000..e134a6fa9
--- /dev/null
+++ b/libc/sysdeps/linux/common/signalfd.c
@@ -0,0 +1,38 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * signalfd() for uClibc
+ *
+ * Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+
+#if defined __NR_signalfd4
+#define __NR___syscall_signalfd4 __NR_signalfd4
+static __inline__ _syscall4(int, __syscall_signalfd4, int, fd,
+ const sigset_t *, mask, size_t, sizemask, int, flags);
+#elif defined __NR_signalfd
+#define __NR___syscall_signalfd __NR_signalfd4
+static __inline__ _syscall3(int, __syscall_signalfd, int, fd,
+ const sigset_t *, mask, size_t, sizemask);
+#endif
+
+int signalfd (int fd, const sigset_t *mask, int flags)
+{
+#if defined __NR___syscall_signalfd4
+ return __syscall_signalfd4(fd, mask, _NSIG / 8, flags);
+#elif defined __NR___syscall_signalfd
+ if (flags != 0) {
+ __set_errno(EINVAL);
+ return 1;
+ }
+ return __syscall_signalfd(fd, mask, _NSIG / 8);
+#elif defined __UCLIBC_HAS_STUBS__
+ __set_errno(ENOSYS);
+ return -1;
+#endif
+}