.

send_stdin.c

@@ -0,0 +1,31 @@
+#include <libowfat/errmsg.h>
+
+#include "pipeshare.h"
+
+int send_stdin(int64 fd)
+{
+  char buf[8192];
+  int r;
+  uint64 readpos=0,writepos=0;
+  int eof=0;
+  for(;;){
+    if(eof && writepos>=readpos)break;
+    if(!eof && readpos < sizeof buf) {
+      r=io_tryread(0,buf+readpos,(sizeof buf)-readpos);
+      if(r<=-2){carpsys("read stdin");return 0;}
+      if(r==0)eof=1;
+      if(r>0)readpos+=r;
+    }
+    if(writepos<readpos){
+      r=io_trywrite(fd,buf+writepos,readpos-writepos);
+      if(r<=-2){carpsys("write");return 0;}
+      if(r>0){
+        writepos+=r;
+        if(writepos==readpos)
+          readpos=writepos=0;
+      }
+    }
+  }
+  return 1;
+}
+