tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Kprobe event symbol argument
   4 # requires: kprobe_events
   5
   6 SYMBOL="linux_proc_banner"
   7
   8 if [ ! -f /proc/kallsyms ]; then
   9   echo "Can not check the target symbol - please enable CONFIG_KALLSYMS"
  10   exit_unresolved
  11 elif ! grep "$SYMBOL\$" /proc/kallsyms; then
  12   echo "Linux banner is not exported - please enable CONFIG_KALLSYMS_ALL"
  13   exit_unresolved
  14 fi
  15
  16 : "Test get basic types symbol argument"
  17 echo "p:testprobe_u $FUNCTION_FORK arg1=@linux_proc_banner:u64 arg2=@linux_proc_banner:u32 arg3=@linux_proc_banner:u16 arg4=@linux_proc_banner:u8" > kprobe_events
  18 echo "p:testprobe_s $FUNCTION_FORK arg1=@linux_proc_banner:s64 arg2=@linux_proc_banner:s32 arg3=@linux_proc_banner:s16 arg4=@linux_proc_banner:s8" >> kprobe_events
  19 if grep -q "x8/16/32/64" README; then
  20   echo "p:testprobe_x $FUNCTION_FORK arg1=@linux_proc_banner:x64 arg2=@linux_proc_banner:x32 arg3=@linux_proc_banner:x16 arg4=@linux_proc_banner:x8" >> kprobe_events
  21 fi
  22 echo "p:testprobe_bf $FUNCTION_FORK arg1=@linux_proc_banner:b8@4/32" >> kprobe_events
  23 echo 1 > events/kprobes/enable
  24 (echo "forked")
  25 echo 0 > events/kprobes/enable
  26 grep "testprobe_[usx]:.* arg1=.* arg2=.* arg3=.* arg4=.*" trace
  27 grep "testprobe_bf:.* arg1=.*" trace
  28
  29 : "Test get string symbol argument"
  30 echo "p:testprobe_str $FUNCTION_FORK arg1=@linux_proc_banner:string" > kprobe_events
  31 echo 1 > events/kprobes/enable
  32 (echo "forked")
  33 echo 0 > events/kprobes/enable
  34 RESULT=`grep "testprobe_str" trace | sed -e 's/.* arg1=\(.*\)/\1/'`
  35
  36 RESULT=`echo $RESULT | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'`
  37 ORIG=`cat /proc/version | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'`
  38 test "$RESULT" = "$ORIG"