initial

1 files changed, 33 insertions, 0 deletions

diff --git a/src/cutfile.c b/src/cutfile.c
new file mode 100644
index 0000000..a2c87dc
--- /dev/null
+++ b/src/cutfile.c
@@ -0,0 +1,33 @@
+#include "mystdlib.h"
+#include <unistd.h>
+
+int main( int argc, char **argv )
+{
+  MAP file = NULL;
+  unsigned long i = 0;
+
+  if( !(file = map_file( argv[1], 0 ) ) ) exit( 1 );
+
+  if( file->size & 15 )
+    puts( "WARNING: File size not multiple of 16" );
+
+  while( i < file->size && *(unsigned long*)(file->addr+i) < 2911418625UL )
+    i+= 16;
+
+  if( i < file->size)
+  {
+    if( i ) {
+      off_t newsize = (off_t)i;
+      printf( "%s reduced by %8d bytes. (Offending offset: %09lu)\n", argv[1], (unsigned long)(file->size - i ), *(unsigned long*)(file->addr+i) );
+      ftruncate( file->fh, newsize );
+    } else {
+      printf( "%s removed.                   (Offending offset: %09lu)\n", argv[1], *(unsigned long*)(file->addr+i) );
+      unlink( argv[1] );
+    }
+  }
+
+  unmap_file( &file );
+
+
+  return 0;
+}