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