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

   1 /*
   2  * Copyright (c) 2019 Dmitry V. Levin <ldv@altlinux.org>
   3  * All rights reserved.
   4  *
   5  * SPDX-License-Identifier: LGPL-2.1-or-later
   6  */
   7
   8 #include "defs.h"
   9 #ifdef HAVE_LINUX_MOUNT_H
  10 # include <linux/mount.h>
  11 #endif
  12 #include "xlat/fsconfig_cmds.h"
  13
  14 SYS_FUNC(fsconfig)
  15 {
  16         const int fs_fd = tcp->u_arg[0];
  17         const unsigned int cmd = tcp->u_arg[1];
  18         const kernel_ulong_t key = tcp->u_arg[2];
  19         const kernel_ulong_t value = tcp->u_arg[3];
  20         const int aux = tcp->u_arg[4];
  21
  22         printfd(tcp, fs_fd);
  23         tprints(", ");
  24
  25         printxval(fsconfig_cmds, cmd, "FSCONFIG_???");
  26         tprints(", ");
  27
  28         switch (cmd) {
  29                 case FSCONFIG_SET_FLAG:
  30                 case FSCONFIG_SET_STRING:
  31                 case FSCONFIG_SET_BINARY:
  32                 case FSCONFIG_SET_PATH:
  33                 case FSCONFIG_SET_PATH_EMPTY:
  34                 case FSCONFIG_SET_FD:
  35                         printstr_ex(tcp, key, 256, QUOTE_0_TERMINATED);
  36                         break;
  37                 case FSCONFIG_CMD_CREATE:
  38                 case FSCONFIG_CMD_RECONFIGURE:
  39                 default:
  40                         printaddr(key);
  41                         break;
  42         }
  43         tprints(", ");
  44
  45         switch (cmd) {
  46                 case FSCONFIG_SET_STRING:
  47                         printstr_ex(tcp, value, 256, QUOTE_0_TERMINATED);
  48                         break;
  49                 case FSCONFIG_SET_PATH:
  50                 case FSCONFIG_SET_PATH_EMPTY:
  51                         printpath(tcp, value);
  52                         break;
  53                 case FSCONFIG_SET_BINARY:
  54                         if (aux >= 0 && aux <= 1024 * 1024) {
  55                                 printstr_ex(tcp, value, aux, QUOTE_FORCE_HEX);
  56                                 break;
  57                         }
  58                         ATTRIBUTE_FALLTHROUGH;
  59                 case FSCONFIG_SET_FLAG:
  60                 case FSCONFIG_SET_FD:
  61                 case FSCONFIG_CMD_CREATE:
  62                 case FSCONFIG_CMD_RECONFIGURE:
  63                 default:
  64                         printaddr(value);
  65                         break;
  66         }
  67         tprints(", ");
  68
  69         switch (cmd) {
  70                 case FSCONFIG_SET_PATH:
  71                 case FSCONFIG_SET_PATH_EMPTY:
  72                         print_dirfd(tcp, aux);
  73                         break;
  74                 case FSCONFIG_SET_FD:
  75                         printfd(tcp, aux);
  76                         break;
  77                 case FSCONFIG_SET_FLAG:
  78                 case FSCONFIG_SET_STRING:
  79                 case FSCONFIG_SET_BINARY:
  80                 case FSCONFIG_CMD_CREATE:
  81                 case FSCONFIG_CMD_RECONFIGURE:
  82                 default:
  83                         tprintf("%d", aux);
  84                         break;
  85         }
  86
  87         return RVAL_DECODED;
  88 }