instrumentation/syscalls/lttng-syscalls-generate-headers.sh

   1 #!/bin/sh
   2
   3 # Generate system call probe description macros from syscall metadata dump file.
   4 # example usage:
   5 #
   6 # lttng-syscalls-generate-headers.sh integers 3.0.4 x86-64-syscalls-3.0.4
   7 # lttng-syscalls-generate-headers.sh pointers 3.0.4 x86-64-syscalls-3.0.4
   8
   9 CLASS=$1
  10 INPUTDIR=$2
  11 INPUTFILE=$3
  12 INPUT=${INPUTDIR}/${INPUTFILE}
  13 SRCFILE=gen.tmp.0
  14 TMPFILE=gen.tmp.1
  15
  16 cp ${INPUT} ${SRCFILE}
  17
  18 #Cleanup
  19 sed 's/^\[.*\] //g' ${SRCFILE} > ${TMPFILE}
  20 mv ${TMPFILE} ${SRCFILE}
  21
  22 sed 's/^syscall sys_\([^ ]*\)/syscall \1/g' ${SRCFILE} > ${TMPFILE}
  23 mv ${TMPFILE} ${SRCFILE}
  24
  25 #Filter
  26
  27 if [ "$CLASS" = integers ]; then
  28         #select integers and no-args.
  29         grep -v "\\*\|cap_user_header_t" ${SRCFILE} > ${TMPFILE}
  30         mv ${TMPFILE} ${SRCFILE}
  31 fi
  32
  33
  34 if [ "$CLASS" = pointers ]; then
  35         #select system calls using pointers.
  36         grep "\\*\|cap_#user_header_t" ${SRCFILE} > ${TMPFILE}
  37         mv ${TMPFILE} ${SRCFILE}
  38 fi
  39
  40 HEADER=headers/${INPUTFILE}-${CLASS}.h
  41
  42 echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER}
  43
  44 echo \
  45 "#ifndef CREATE_SYSCALL_TABLE
  46
  47 #undef TRACE_SYSTEM
  48 #define TRACE_SYSTEM syscalls
  49
  50 #if !defined(_TRACE_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ)
  51 #define _TRACE_SYSCALLS_H
  52
  53 #include <linux/tracepoint.h>
  54 #include <linux/syscalls.h>
  55 " >> ${HEADER}
  56
  57 if [ "$CLASS" = integers ]; then
  58
  59 NRARGS=0
  60
  61 echo \
  62 'DECLARE_EVENT_CLASS_NOARGS(syscalls_noargs,\n'\
  63 '       TP_STRUCT__entry(),\n'\
  64 '       TP_fast_assign(),\n'\
  65 '       TP_printk()\n'\
  66 ')'\
  67         >> ${HEADER}
  68
  69 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
  70 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
  71 'types: (\([^)]*\)) '\
  72 'args: (\([^)]*\))/'\
  73 'DEFINE_EVENT_NOARGS(syscalls_noargs, sys_\1)'\
  74 '/g'\
  75         ${TMPFILE} >> ${HEADER}
  76
  77 fi
  78
  79 # types: 4
  80 # args   5
  81
  82 NRARGS=1
  83 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
  84 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
  85 'types: (\([^)]*\)) '\
  86 'args: (\([^)]*\))/'\
  87 'TRACE_EVENT(sys_\1,\n'\
  88 '       TP_PROTO(\4 \5),\n'\
  89 '       TP_ARGS(\5),\n'\
  90 '       TP_STRUCT__entry(__field(\4, \5)),\n'\
  91 '       TP_fast_assign(tp_assign(\5, \5)),\n'\
  92 '       TP_printk()\n'\
  93 ')/g'\
  94         ${TMPFILE} >> ${HEADER}
  95
  96 # types: 4 5
  97 # args   6 7
  98
  99 NRARGS=2
 100 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 101 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
 102 'types: (\([^,]*\), \([^)]*\)) '\
 103 'args: (\([^,]*\), \([^)]*\))/'\
 104 'TRACE_EVENT(sys_\1,\n'\
 105 '       TP_PROTO(\4 \6, \5 \7),\n'\
 106 '       TP_ARGS(\6, \7),\n'\
 107 '       TP_STRUCT__entry(__field(\4, \6) __field(\5, \7)),\n'\
 108 '       TP_fast_assign(tp_assign(\6, \6) tp_assign(\7, \7)),\n'\
 109 '       TP_printk()\n'\
 110 ')/g'\
 111         ${TMPFILE} >> ${HEADER}
 112
 113 # types: 4 5 6
 114 # args   7 8 9
 115
 116 NRARGS=3
 117 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 118 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
 119 'types: (\([^,]*\), \([^,]*\), \([^)]*\)) '\
 120 'args: (\([^,]*\), \([^,]*\), \([^)]*\))/'\
 121 'TRACE_EVENT(sys_\1,\n'\
 122 '       TP_PROTO(\4 \7, \5 \8, \6 \9),\n'\
 123 '       TP_ARGS(\7, \8, \9),\n'\
 124 '       TP_STRUCT__entry(__field(\4, \7) __field(\5, \8) __field(\6, \9)),\n'\
 125 '       TP_fast_assign(tp_assign(\7, \7) tp_assign(\8, \8) tp_assign(\9, \9)),\n'\
 126 '       TP_printk()\n'\
 127 ')/g'\
 128         ${TMPFILE} >> ${HEADER}
 129
 130
 131 # types: 4 5  6  7
 132 # args   8 9 10 11
 133
 134 NRARGS=4
 135 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 136 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
 137 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\
 138 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\
 139 'TRACE_EVENT(sys_\1,\n'\
 140 '       TP_PROTO(\4 \8, \5 \9, \6 \10, \7 \11),\n'\
 141 '       TP_ARGS(\8, \9, \10, \11),\n'\
 142 '       TP_STRUCT__entry(__field(\4, \8) __field(\5, \9) __field(\6, \10) __field(\7, \11)),\n'\
 143 '       TP_fast_assign(tp_assign(\8, \8) tp_assign(\9, \9) tp_assign(\10, \10) tp_assign(\11, \11)),\n'\
 144 '       TP_printk()\n'\
 145 ')/g'\
 146         ${TMPFILE} >> ${HEADER}
 147
 148 # types: 4  5  6  7  8
 149 # args   9 10 11 12 13
 150
 151 NRARGS=5
 152 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 153 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
 154 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\
 155 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\
 156 'TRACE_EVENT(sys_\1,\n'\
 157 '       TP_PROTO(\4 \9, \5 \10, \6 \11, \7 \12, \8 \13),\n'\
 158 '       TP_ARGS(\9, \10, \11, \12, \13),\n'\
 159 '       TP_STRUCT__entry(__field(\4, \9) __field(\5, \10) __field(\6, \11) __field(\7, \12) __field(\8, \13)),\n'\
 160 '       TP_fast_assign(tp_assign(\9, \9) tp_assign(\10, \10) tp_assign(\11, \11) tp_assign(\12, \12) tp_assign(\13, \13)),\n'\
 161 '       TP_printk()\n'\
 162 ')/g'\
 163         ${TMPFILE} >> ${HEADER}
 164
 165
 166 # types: 4   5  6  7  8  9
 167 # args   10 11 12 13 14 15
 168
 169 NRARGS=6
 170 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 171 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\
 172 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\
 173 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\
 174 'TRACE_EVENT(sys_\1,\n'\
 175 '       TP_PROTO(\4 \10, \5 \11, \6 \12, \7 \13, \8 \14, \9 \15),\n'\
 176 '       TP_ARGS(\10, \11, \12, \13, \14, \15),\n'\
 177 '       TP_STRUCT__entry(__field(\4, \10) __field(\5, \11) __field(\6, \12) __field(\7, \13) __field(\8, \14) __field(\9, \15)),\n'\
 178 '       TP_fast_assign(tp_assign(\10, \10) tp_assign(\11, \11) tp_assign(\12, 12) tp_assign(\13, \13) tp_assign(\14, \14) tp_assign(\15, \15)),\n'\
 179 '       TP_printk()\n'\
 180 ')/g'\
 181         ${TMPFILE} >> ${HEADER}
 182
 183 # Macro for tracing syscall table
 184
 185 rm -f ${TMPFILE}
 186 for NRARGS in $(seq 0 6); do
 187         grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} >> ${TMPFILE}
 188 done
 189
 190 echo \
 191 "
 192 #endif /*  _TRACE_SYSCALLS_H */
 193
 194 /* This part must be outside protection */
 195 #include \"../../../probes/define_trace.h\"
 196
 197 #else /* CREATE_SYSCALL_TABLE */
 198 " >> ${HEADER}
 199
 200
 201 NRARGS=0
 202
 203 if [ "$CLASS" = integers ]; then
 204 #noargs
 205 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 206 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) .*$/'\
 207 'TRACE_SYSCALL_TABLE(syscalls_noargs, sys_\1, \2, \3)/g'\
 208         ${TMPFILE} >> ${HEADER}
 209 fi
 210
 211 #others.
 212 grep -v "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 213 sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) .*$/'\
 214 'TRACE_SYSCALL_TABLE(sys_\1, sys_\1, \2, \3)/g'\
 215         ${TMPFILE} >> ${HEADER}
 216
 217 echo -n \
 218 "
 219 #endif /* CREATE_SYSCALL_TABLE */
 220 " >> ${HEADER}
 221
 222 rm -f ${INPUTFILE}.tmp
 223 rm -f ${TMPFILE}
 224 rm -f ${SRCFILE}