scripts/gen_preload_header.sh

   1 #!/bin/bash
   2 handlers_lib="$LIBDIR/da_probe_tizen.so"
   3 loader_library_pattern="libdl[.-].*"
   4 linker_library_pattern="ld-.*"
   5 libc_pkg_name="glibc"
   6 libpthread_pkg_name="glibc"
   7 libsmack_pkg_name="libsmack"
   8 libpthread_init_func="__pthread_initialize_minimal"
   9
  10 output=$1
  11
  12
  13 function print_header()
  14 {
  15     filename=$1
  16     echo "#!/bin/bash
  17 #Preload
  18 PATH=/bin:/usr/bin:/sbin:/usr/sbin
  19 " > $filename
  20 }
  21
  22 function print_loader()
  23 {
  24     filename=$1
  25
  26     loader_path=$(rpm -ql $libc_pkg_name | grep "$loader_library_pattern" | head -1)
  27     echo -e "/bin/echo \"$loader_path\" > /sys/kernel/debug/swap/preload/ignored_binaries/bins_add" >> $filename
  28 }
  29
  30 function print_linker()
  31 {
  32     filename=$1
  33
  34     linker_path=$(rpm -ql $libc_pkg_name | grep "$linker_library_pattern" | head -1)
  35     echo -e "/bin/echo \"$linker_path\" > /sys/kernel/debug/swap/preload/ignored_binaries/bins_add" >> $filename
  36 }
  37
  38 function print_probe_lib()
  39 {
  40     filename=$1
  41     echo -e "/bin/echo \"$handlers_lib\" > /sys/kernel/debug/swap/preload/handler" >> $filename
  42 }
  43
  44 function print_libc()
  45 {
  46     filename=$1
  47
  48     echo -e "/bin/echo /$LIB/libc.so.6 > /sys/kernel/debug/swap/preload/ignored_binaries/bins_add" >> $filename
  49 }
  50
  51 function print_libpthread()
  52 {
  53     filename=$1
  54
  55     libpthread_path=$(rpm -ql $libpthread_pkg_name | grep "libpthread" | head -1)
  56     addr=$(parse_elf -f $libpthread_path --addr_format=swap --syms | grep $libpthread_init_func | awk '{print "0x" $1}')
  57
  58     echo -e "/bin/echo \"$libpthread_path\" > /sys/kernel/debug/swap/preload/ignored_binaries/bins_add" >> $filename
  59     echo -e "/bin/echo \"$libpthread_path\" > /sys/kernel/debug/swap/preload/pthread/path" >> $filename
  60     echo -e "/bin/echo $addr > /sys/kernel/debug/swap/preload/pthread/minimal_init_off" >> $filename
  61 }
  62
  63 function print_libsmack()
  64 {
  65     filename=$1
  66
  67     libsmack_path=$(rpm -ql $libsmack_pkg_name | grep "libsmack" | head -1)
  68     echo -e "/bin/echo \"$libsmack_path\" > /sys/kernel/debug/swap/preload/ignored_binaries/bins_add" >> $filename
  69 }
  70
  71 function print_ignored()
  72 {
  73     filename=$1
  74
  75     print_libc $filename
  76     print_libpthread $filename
  77     print_loader $filename
  78     print_linker $filename
  79     print_libsmack $filename
  80 }
  81
  82 function print_enable()
  83 {
  84     filename=$1
  85
  86     echo -e "/bin/echo \"1\" > /sys/kernel/debug/swap/preload/enable" >> $filename
  87 }
  88
  89 ##################################
  90 #       Script entry point       #
  91 ##################################
  92
  93
  94 print_header $output
  95 print_probe_lib $output
  96 print_ignored $output
  97 print_enable $output
  98
  99 # check addresses
 100 grep 0x0000000000000000 $output && echo "ERROR: generate preload info" >&2 && exit 1
 101 echo 0