/*
- * Copyright (C) 2006-2012 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include <sys/types.h>
#include <dirent.h>
#include <sys/mman.h>
-#include <fcntl.h>
-#include <sys/uio.h>
#include "para.h"
#include "error.h"
#include "string.h"
#include "fd.h"
+/**
+ * Change the name or location of a file.
+ *
+ * \param oldpath File to be moved.
+ * \param newpath Destination.
+ *
+ * This is just a simple wrapper for the rename(2) system call which returns a
+ * paraslash error code and prints an error message on failure.
+ *
+ * \return Standard.
+ *
+ * \sa rename(2).
+ */
+int xrename(const char *oldpath, const char *newpath)
+{
+ int ret = rename(oldpath, newpath);
+
+ if (ret >= 0)
+ return 1;
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ PARA_ERROR_LOG("failed to rename %s -> %s\n", oldpath, newpath);
+ return ret;
+}
+
/**
* Write an array of buffers to a file descriptor.
*
va_start(ap, fmt);
ret = xvasprintf(&msg, fmt, ap);
+ va_end(ap);
ret = write_all(fd, msg, ret);
free(msg);
return ret;
*
* If \a rfds is not \p NULL and the (non-blocking) file descriptor \a fd is
* not set in \a rfds, this function returns early without doing anything.
- * Otherwise The function tries to read up to \a sz bytes from \a fd. As for
- * xwrite(), EAGAIN is not considered an error condition. However, EOF
- * is.
+ * Otherwise The function tries to read up to \a sz bytes from \a fd, where \a
+ * sz is the sum of the lengths of all vectors in \a iov. As for xwrite(),
+ * \p EAGAIN is not considered an error condition. However, \p EOF is.
*
* \return Zero or a negative error code. If the underlying call to readv(2)
* returned zero (indicating an end of file condition) or failed for some
- * reason other than \p EAGAIN, a negative return value is returned.
+ * reason other than \p EAGAIN, a negative error code is returned.
*
* In any case, \a num_bytes contains the number of bytes that have been
* successfully read from \a fd (zero if the first readv() call failed with
{
int ret;
+ *dir = NULL;
if (cwd) {
ret = para_open(".", O_RDONLY, 0);
if (ret < 0)