fix incorrect void return type for syncfs function

being nonstandard, the closest thing to a specification for this
function is its man page, which documents it as returning int. it can
fail with EBADF if the file descriptor passed is invalid.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/linux/syncfs.c b/src/linux/syncfs.c
index fe2b8a70..bc7d301e 100644
--- a/src/linux/syncfs.c
+++ b/src/linux/syncfs.c
@@ -2,7 +2,7 @@
 #include <unistd.h>
 #include "syscall.h"
 
-void syncfs(int fd)
+int syncfs(int fd)
 {
-	__syscall(SYS_syncfs, fd);
+	return syscall(SYS_syncfs, fd);
 }