Include fd-reopen.h.

(open_fd): Remove.  All callers changed to use fd_reopen instead.

diff --git a/src/dd.c b/src/dd.c
index 61bc2e0..f8ece81 100644 (file)
--- a/src/dd.c
+++ b/src/dd.c
@@ -28,6 +28,7 @@
 
 #include "system.h"
 #include "error.h"
+#include "fd-reopen.h"
 #include "gethrxtime.h"
 #include "getpagesize.h"
 #include "human.h"
@@ -752,28 +753,6 @@ iwrite (int fd, char const *buf, size_t size)
   return total_written;
 }
 
-/* Open a file to a particular file descriptor.  This is like standard
-   `open', except it always returns DESIRED_FD if successful.  */
-static int
-open_fd (int desired_fd, char const *filename, int options, mode_t mode)
-{
-  int fd;
-  close (desired_fd);
-  fd = open (filename, options, mode);
-  if (fd < 0)
-    return -1;
-
-  if (fd != desired_fd)
-    {
-      if (dup2 (fd, desired_fd) != desired_fd)
-       desired_fd = -1;
-      if (close (fd) != 0)
-       return -1;
-    }
-
-  return desired_fd;
-}
-
 /* Write, then empty, the output buffer `obuf'. */
 
 static void
@@ -1630,7 +1609,7 @@ main (int argc, char **argv)
     }
   else
     {
-      if (open_fd (STDIN_FILENO, input_file, O_RDONLY | input_flags, 0) < 0)
+      if (fd_reopen (STDIN_FILENO, input_file, O_RDONLY | input_flags, 0) < 0)
        error (EXIT_FAILURE, errno, _("opening %s"), quote (input_file));
     }
 
@@ -1657,8 +1636,9 @@ main (int argc, char **argv)
         need to read to satisfy a `seek=' request.  If we can't read
         the file, go ahead with write-only access; it might work.  */
       if ((! seek_records
-          || open_fd (STDOUT_FILENO, output_file, O_RDWR | opts, perms) < 0)
-         && open_fd (STDOUT_FILENO, output_file, O_WRONLY | opts, perms) < 0)
+          || fd_reopen (STDOUT_FILENO, output_file, O_RDWR | opts, perms) < 0)
+         && (fd_reopen (STDOUT_FILENO, output_file, O_WRONLY | opts, perms)
+             < 0))
        error (EXIT_FAILURE, errno, _("opening %s"), quote (output_file));
 
 #if HAVE_FTRUNCATE