granicus.if.org Git - strace/blob - hostname.c

   1 /*
   2  * Copyright (c) 2014-2018 The strace developers.
   3  * All rights reserved.
   4  *
   5  * SPDX-License-Identifier: LGPL-2.1-or-later
   6  */
   7
   8 #include "defs.h"
   9
  10 #ifdef HAVE_LINUX_UTSNAME_H
  11 # include <linux/utsname.h>
  12 #endif
  13
  14 #ifndef __NEW_UTS_LEN
  15 # define __NEW_UTS_LEN 64
  16 #endif
  17
  18 SYS_FUNC(sethostname)
  19 {
  20         unsigned int len = tcp->u_arg[1];
  21
  22         if (len > __NEW_UTS_LEN) {
  23                 printaddr(tcp->u_arg[0]);
  24         } else {
  25                 printstrn(tcp, tcp->u_arg[0], len);
  26         }
  27
  28         tprintf(", %u", len);
  29
  30         return RVAL_DECODED;
  31 }
  32
  33 #if defined(ALPHA)
  34 SYS_FUNC(gethostname)
  35 {
  36         if (exiting(tcp)) {
  37                 if (syserror(tcp))
  38                         printaddr(tcp->u_arg[0]);
  39                 else
  40                         printstr(tcp, tcp->u_arg[0]);
  41                 tprintf(", %" PRI_klu, tcp->u_arg[1]);
  42         }
  43         return 0;
  44 }
  45 #endif /* ALPHA */