adapt setlocale to support possibility of failure

[musl] / src / linux / eventfd.c

diff --git a/src/linux/eventfd.c b/src/linux/eventfd.c
index cb39a7b..68e489c 100644 (file)
--- 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;
 }