move rwbuffer to new cprogs directory

[chiark-utils.git] / backup / readbuffer.c

diff --git a/backup/readbuffer.c b/backup/readbuffer.c
deleted file mode 100644 (file)
index e48e78c..0000000
--- a/backup/readbuffer.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * readbuffer.c
- *
- * A program for reading input from devices which don't like constant
- * stopping and starting, such as tape drives.  readbuffer is:
- *  Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk>
- *
- * readbuffer is part of chiark backup, a system for backing up GNU/Linux and
- * other UN*X-compatible machines, as used on chiark.greenend.org.uk.
- * chiark backup is:
- *  Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk>
- *  Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk>
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2,
- * or (at your option) any later version.
- *
- * This is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this file; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <assert.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include "rwbuffer.h"
-
-const char *progname= "readbuffer";
-
-static size_t waitempty;
-
-int main(int argc, const char *const *argv) {
-  int r,reading;
-
-  startup(argv);
-  waitempty= (buffersize*1)/4;
-  reading=1;
-  
-  while (!seeneof || used) {
-    
-    FD_ZERO(&readfds);
-    if (reading) {
-      if (used<buffersize-1) {
-       FD_SET(0,&readfds);
-      } else {
-       reading=0;
-      }
-    }
-    FD_ZERO(&writefds); if (used) FD_SET(1,&writefds);
-
-    callselect();
-
-    if (FD_ISSET(0,&readfds)) {
-      r= read(0,rp,min(buffersize-1-used,buf+buffersize-rp));
-      if (!r) {
-        seeneof=1; reading=0;
-      } else if (r<0) {
-        if (!(errno == EAGAIN || errno == EINTR)) { perror("read"); exit(1); }
-      } else {
-        used+= r;
-        rp+= r;
-        if (rp == buf+buffersize) rp=buf;
-      }
-    }
-
-    if (FD_ISSET(1,&writefds)) {
-      assert(used);
-      r= write(1,wp,min(used,buf+buffersize-wp));
-      if (r<=0) {
-        if (!(errno == EAGAIN || errno == EINTR)) { perror("write"); exit(1); }
-      } else {
-        used-= r;
-        wp+= r;
-        if (wp == buf+buffersize) wp=buf;
-      }
-      if (used < waitempty && !seeneof) {
-       reading=1;
-      }
-    }
-  }
-  exit(0);
-}