fsdev/9p-marshal.c

   1 /*
   2  * 9p backend
   3  *
   4  * Copyright IBM, Corp. 2010
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include <glib/gprintf.h>
  16 #include <dirent.h>
  17 #include <utime.h>
  18 #include <sys/uio.h>
  19
  20 #include "9p-marshal.h"
  21
  22 void v9fs_string_free(V9fsString *str)
  23 {
  24     g_free(str->data);
  25     str->data = NULL;
  26     str->size = 0;
  27 }
  28
  29 void v9fs_string_null(V9fsString *str)
  30 {
  31     v9fs_string_free(str);
  32 }
  33
  34 void GCC_FMT_ATTR(2, 3)
  35 v9fs_string_sprintf(V9fsString *str, const char *fmt, ...)
  36 {
  37     va_list ap;
  38
  39     v9fs_string_free(str);
  40
  41     va_start(ap, fmt);
  42     str->size = g_vasprintf(&str->data, fmt, ap);
  43     va_end(ap);
  44 }
  45
  46 void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs)
  47 {
  48     v9fs_string_free(lhs);
  49     v9fs_string_sprintf(lhs, "%s", rhs->data);
  50 }