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

   1 /*
   2  * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2014-2018 The strace developers.
   4  * All rights reserved.
   5  *
   6  * SPDX-License-Identifier: LGPL-2.1-or-later
   7  */
   8
   9 #include "defs.h"
  10 #include "xlat/personality_flags.h"
  11 #include "xlat/personality_types.h"
  12
  13
  14 SYS_FUNC(personality)
  15 {
  16         unsigned int pers;
  17
  18         if (entering(tcp)) {
  19                 pers = tcp->u_arg[0];
  20                 if (0xffffffff == pers) {
  21                         tprints("0xffffffff");
  22                 } else {
  23                         printxval(personality_types, pers & PER_MASK, "PER_???");
  24                         pers &= ~PER_MASK;
  25                         if (pers) {
  26                                 tprints("|");
  27                                 printflags(personality_flags, pers, NULL);
  28                         }
  29                 }
  30                 return 0;
  31         }
  32
  33         if (syserror(tcp))
  34                 return 0;
  35
  36         pers = tcp->u_rval;
  37         static char outstr[1024];
  38         char *p = outstr + sprintxval(outstr, sizeof(outstr), personality_types,
  39                                       pers & PER_MASK, "PER_???");
  40         pers &= ~PER_MASK;
  41         if (pers)
  42                 strcpy(p, sprintflags("|", personality_flags, pers));
  43         tcp->auxstr = outstr;
  44         return RVAL_HEX | RVAL_STR;
  45 }