X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Flinux%2Feventfd.c;h=68e489c83647e71f947ba616a154d9f11f44a85e;hb=4554f155dd23a65fcdfd39f1d5af8af55ba37694;hp=cb39a7bab7b4d8e871c08c6871c8105b2af59209;hpb=15b77d52c950c375514d2e8152e7112fd018e20e;p=musl

diff --git a/src/linux/eventfd.c b/src/linux/eventfd.c
index cb39a7ba..68e489c8 100644
--- a/src/linux/eventfd.c
+++ b/src/linux/eventfd.c
@@ -1,7 +1,23 @@
 #include <sys/eventfd.h>
+#include <unistd.h>
+#include <errno.h>
 #include "syscall.h"
 
 int eventfd(unsigned int count, int flags)
 {
-	return syscall(flags ? SYS_eventfd2 : SYS_eventfd, count, flags);
+	int r = __syscall(SYS_eventfd2, count, flags);
+#ifdef SYS_eventfd
+	if (r==-ENOSYS && !flags) r = __syscall(SYS_eventfd, count);
+#endif
+	return __syscall_ret(r);
+}
+
+int eventfd_read(int fd, eventfd_t *value)
+{
+	return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
+}
+
+int eventfd_write(int fd, eventfd_t value)
+{
+	return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
 }