add io_fd_canwrite (like io_fd but assume the fd is writable)

save a few syscalls here and there
2012-04-10 21:15:51 +00:00
parent 6e6fc8b85d
commit e175800a8c
15 changed files with 322 additions and 63 deletions
--- a/test/cdbget2.c
+++ b/test/cdbget2.c
@@ -6,7 +6,7 @@
 #include <errmsg.h>

 #ifndef O_BINARY
-#define O_BINARY
+#define O_BINARY 0
 #endif

 int main(int argc,char* argv[]) {