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