Very first cut at a klibc-derived C library for com32

1 files changed, 35 insertions, 0 deletions

diff --git a/com32/lib/fwrite.c b/com32/lib/fwrite.c
new file mode 100644
index 00000000..0a73188c
--- /dev/null
+++ b/com32/lib/fwrite.c
@@ -0,0 +1,35 @@
+/*
+ * fwrite.c
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+
+size_t _fwrite(const void *buf, size_t count, FILE *f)
+{
+  size_t bytes = 0;
+  ssize_t rv;
+  const char *p = buf;
+
+  while ( count ) {
+    rv = write(fileno(f), p, count);
+    if ( rv == -1 ) {
+      if ( errno == EINTR )
+	continue;
+      else
+	break;
+    } else if ( rv == 0 ) {
+      break;
+    }
+
+    p += rv;
+    bytes += rv;
+    count -= rv;
+  }
+
+  return bytes;
+}
+
+    
+