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 <glib.h>
  15 #include <glib/gprintf.h>
  16 #include <sys/types.h>
  17 #include <dirent.h>
  18 #include <sys/time.h>
  19 #include <utime.h>
  20 #include <sys/uio.h>
  21 #include <string.h>
  22 #include <stdint.h>
  23 #include <errno.h>
  24
  25 #include "qemu/compiler.h"
  26 #include "9p-marshal.h"
  27
  28 void v9fs_string_free(V9fsString *str)
  29 {
  30     g_free(str->data);
  31     str->data = NULL;
  32     str->size = 0;
  33 }
  34
  35 void v9fs_string_null(V9fsString *str)
  36 {
  37     v9fs_string_free(str);
  38 }
  39
  40 void GCC_FMT_ATTR(2, 3)
  41 v9fs_string_sprintf(V9fsString *str, const char *fmt, ...)
  42 {
  43     va_list ap;
  44
  45     v9fs_string_free(str);
  46
  47     va_start(ap, fmt);
  48     str->size = g_vasprintf(&str->data, fmt, ap);
  49     va_end(ap);
  50 }
  51
  52 void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs)
  53 {
  54     v9fs_string_free(lhs);
  55     v9fs_string_sprintf(lhs, "%s", rhs->data);
  56 }