granicus.if.org Git - strace/blob - tests/inject-nf.test

   1 #!/bin/sh -efu
   2 #
   3 # Check decoding of return values injected into a syscall that "never fails".
   4 #
   5 # Copyright (c) 2018 The strace developers.
   6 # All rights reserved.
   7 #
   8 # SPDX-License-Identifier: GPL-2.0-or-later
   9
  10 . "${srcdir=.}/scno_tampering.sh"
  11
  12 case "$STRACE_ARCH" in
  13 alpha)
  14         SYSCALL=getpgrp
  15         ;;
  16 *)
  17         SYSCALL=getpid
  18         ;;
  19 esac
  20
  21 run_prog
  22 prog="$args"
  23 fault_args="-a9 -e trace=${SYSCALL} -e inject=${SYSCALL}:retval="
  24
  25 test_rval()
  26 {
  27         local rval
  28         rval="$1"; shift
  29
  30         run_strace $fault_args$rval $prog $rval > "$EXP"
  31         match_diff "$LOG" "$EXP"
  32 }
  33
  34 test_rval 0
  35 test_rval 1
  36 test_rval 0x7fffffff
  37 test_rval 0x80000000
  38 test_rval 0xfffff000
  39 test_rval 0xfffffffe
  40 test_rval 0xffffffff
  41
  42 case "$SIZEOF_KERNEL_LONG_T" in
  43 8)
  44         test_rval         0x80000000
  45         test_rval         0xfffff000
  46         test_rval         0xfffffffe
  47         test_rval         0xffffffff
  48         test_rval        0x100000000
  49         test_rval 0x7fffffffffffffff
  50         test_rval 0x8000000000000000
  51         test_rval 0xfffffffffffff000
  52         test_rval 0xfffffffffffffffe
  53         test_rval 0xffffffffffffffff
  54         ;;
  55 esac