| 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 64 |
| 7 | # lttng-syscalls-generate-headers.sh pointers 3.0.4 x86-64-syscalls-3.0.4 64 |
| 8 | |
| 9 | CLASS=$1 |
| 10 | INPUTDIR=$2 |
| 11 | INPUTFILE=$3 |
| 12 | BITNESS=$4 |
| 13 | INPUT=${INPUTDIR}/${INPUTFILE} |
| 14 | SRCFILE=gen.tmp.0 |
| 15 | TMPFILE=gen.tmp.1 |
| 16 | HEADER=headers/${INPUTFILE}_${CLASS}.h |
| 17 | |
| 18 | cp ${INPUT} ${SRCFILE} |
| 19 | |
| 20 | #Cleanup |
| 21 | perl -p -e 's/^\[.*\] //g' ${SRCFILE} > ${TMPFILE} |
| 22 | mv ${TMPFILE} ${SRCFILE} |
| 23 | |
| 24 | perl -p -e 's/^syscall sys_([^ ]*)/syscall $1/g' ${SRCFILE} > ${TMPFILE} |
| 25 | mv ${TMPFILE} ${SRCFILE} |
| 26 | |
| 27 | #Filter |
| 28 | |
| 29 | if [ "$CLASS" = integers ]; then |
| 30 | #select integers and no-args. |
| 31 | CLASSCAP=INTEGERS |
| 32 | grep -v "\\*\|cap_user_header_t" ${SRCFILE} > ${TMPFILE} |
| 33 | mv ${TMPFILE} ${SRCFILE} |
| 34 | fi |
| 35 | |
| 36 | |
| 37 | if [ "$CLASS" = pointers ]; then |
| 38 | #select system calls using pointers. |
| 39 | CLASSCAP=POINTERS |
| 40 | grep "\\*\|cap_#user_header_t" ${SRCFILE} > ${TMPFILE} |
| 41 | mv ${TMPFILE} ${SRCFILE} |
| 42 | fi |
| 43 | |
| 44 | echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER} |
| 45 | |
| 46 | echo \ |
| 47 | "#ifndef CREATE_SYSCALL_TABLE |
| 48 | |
| 49 | #if !defined(_TRACE_SYSCALLS_${CLASSCAP}_H) || defined(TRACE_HEADER_MULTI_READ) |
| 50 | #define _TRACE_SYSCALLS_${CLASSCAP}_H |
| 51 | |
| 52 | #include <linux/tracepoint.h> |
| 53 | #include <linux/syscalls.h> |
| 54 | #include \"${INPUTFILE}_${CLASS}_override.h\" |
| 55 | #include \"syscalls_${CLASS}_override.h\" |
| 56 | " >> ${HEADER} |
| 57 | |
| 58 | if [ "$CLASS" = integers ]; then |
| 59 | |
| 60 | NRARGS=0 |
| 61 | |
| 62 | echo -e \ |
| 63 | 'SC_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 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 75 | 'SC_DEFINE_EVENT_NOARGS(syscalls_noargs, sys_$1)\n'\ |
| 76 | '#endif/g'\ |
| 77 | ${TMPFILE} >> ${HEADER} |
| 78 | |
| 79 | fi |
| 80 | |
| 81 | |
| 82 | # types: 4 |
| 83 | # args 5 |
| 84 | |
| 85 | NRARGS=1 |
| 86 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 87 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 88 | 'types: \(([^)]*)\) '\ |
| 89 | 'args: \(([^)]*)\)/'\ |
| 90 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 91 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 92 | ' TP_PROTO($4 $5),\n'\ |
| 93 | ' TP_ARGS($5),\n'\ |
| 94 | ' TP_STRUCT__entry(__field($4, $5)),\n'\ |
| 95 | ' TP_fast_assign(tp_assign($4, $5, $5)),\n'\ |
| 96 | ' TP_printk()\n'\ |
| 97 | ')\n'\ |
| 98 | '#endif/g'\ |
| 99 | ${TMPFILE} >> ${HEADER} |
| 100 | |
| 101 | # types: 4 5 |
| 102 | # args 6 7 |
| 103 | |
| 104 | NRARGS=2 |
| 105 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 106 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 107 | 'types: \(([^,]*), ([^)]*)\) '\ |
| 108 | 'args: \(([^,]*), ([^)]*)\)/'\ |
| 109 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 110 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 111 | ' TP_PROTO($4 $6, $5 $7),\n'\ |
| 112 | ' TP_ARGS($6, $7),\n'\ |
| 113 | ' TP_STRUCT__entry(__field($4, $6) __field($5, $7)),\n'\ |
| 114 | ' TP_fast_assign(tp_assign($4, $6, $6) tp_assign($5, $7, $7)),\n'\ |
| 115 | ' TP_printk()\n'\ |
| 116 | ')\n'\ |
| 117 | '#endif/g'\ |
| 118 | ${TMPFILE} >> ${HEADER} |
| 119 | |
| 120 | # types: 4 5 6 |
| 121 | # args 7 8 9 |
| 122 | |
| 123 | NRARGS=3 |
| 124 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 125 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 126 | 'types: \(([^,]*), ([^,]*), ([^)]*)\) '\ |
| 127 | 'args: \(([^,]*), ([^,]*), ([^)]*)\)/'\ |
| 128 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 129 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 130 | ' TP_PROTO($4 $7, $5 $8, $6 $9),\n'\ |
| 131 | ' TP_ARGS($7, $8, $9),\n'\ |
| 132 | ' TP_STRUCT__entry(__field($4, $7) __field($5, $8) __field($6, $9)),\n'\ |
| 133 | ' TP_fast_assign(tp_assign($4, $7, $7) tp_assign($5, $8, $8) tp_assign($6, $9, $9)),\n'\ |
| 134 | ' TP_printk()\n'\ |
| 135 | ')\n'\ |
| 136 | '#endif/g'\ |
| 137 | ${TMPFILE} >> ${HEADER} |
| 138 | |
| 139 | |
| 140 | # types: 4 5 6 7 |
| 141 | # args 8 9 10 11 |
| 142 | |
| 143 | NRARGS=4 |
| 144 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 145 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 146 | 'types: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\ |
| 147 | 'args: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\ |
| 148 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 149 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 150 | ' TP_PROTO($4 $8, $5 $9, $6 $10, $7 $11),\n'\ |
| 151 | ' TP_ARGS($8, $9, $10, $11),\n'\ |
| 152 | ' TP_STRUCT__entry(__field($4, $8) __field($5, $9) __field($6, $10) __field($7, $11)),\n'\ |
| 153 | ' TP_fast_assign(tp_assign($4, $8, $8) tp_assign($5, $9, $9) tp_assign($6, $10, $10) tp_assign($7, $11, $11)),\n'\ |
| 154 | ' TP_printk()\n'\ |
| 155 | ')\n'\ |
| 156 | '#endif/g'\ |
| 157 | ${TMPFILE} >> ${HEADER} |
| 158 | |
| 159 | # types: 4 5 6 7 8 |
| 160 | # args 9 10 11 12 13 |
| 161 | |
| 162 | NRARGS=5 |
| 163 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 164 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 165 | 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\ |
| 166 | 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\ |
| 167 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 168 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 169 | ' TP_PROTO($4 $9, $5 $10, $6 $11, $7 $12, $8 $13),\n'\ |
| 170 | ' TP_ARGS($9, $10, $11, $12, $13),\n'\ |
| 171 | ' TP_STRUCT__entry(__field($4, $9) __field($5, $10) __field($6, $11) __field($7, $12) __field($8, $13)),\n'\ |
| 172 | ' TP_fast_assign(tp_assign($4, $9, $9) tp_assign($5, $10, $10) tp_assign($6, $11, $11) tp_assign($7, $12, $12) tp_assign($8, $13, $13)),\n'\ |
| 173 | ' TP_printk()\n'\ |
| 174 | ')\n'\ |
| 175 | '#endif/g'\ |
| 176 | ${TMPFILE} >> ${HEADER} |
| 177 | |
| 178 | |
| 179 | # types: 4 5 6 7 8 9 |
| 180 | # args 10 11 12 13 14 15 |
| 181 | |
| 182 | NRARGS=6 |
| 183 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 184 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\ |
| 185 | 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\) '\ |
| 186 | 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\)/'\ |
| 187 | '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\ |
| 188 | 'SC_TRACE_EVENT(sys_$1,\n'\ |
| 189 | ' TP_PROTO($4 $10, $5 $11, $6 $12, $7 $13, $8 $14, $9 $15),\n'\ |
| 190 | ' TP_ARGS($10, $11, $12, $13, $14, $15),\n'\ |
| 191 | ' TP_STRUCT__entry(__field($4, $10) __field($5, $11) __field($6, $12) __field($7, $13) __field($8, $14) __field($9, $15)),\n'\ |
| 192 | ' TP_fast_assign(tp_assign($4, $10, $10) tp_assign($5, $11, $11) tp_assign($6, $12, $12) tp_assign($7, $13, $13) tp_assign($8, $14, $14) tp_assign($9, $15, $15)),\n'\ |
| 193 | ' TP_printk()\n'\ |
| 194 | ')\n'\ |
| 195 | '#endif/g'\ |
| 196 | ${TMPFILE} >> ${HEADER} |
| 197 | |
| 198 | # Macro for tracing syscall table |
| 199 | |
| 200 | rm -f ${TMPFILE} |
| 201 | for NRARGS in $(seq 0 6); do |
| 202 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} >> ${TMPFILE} |
| 203 | done |
| 204 | |
| 205 | echo \ |
| 206 | " |
| 207 | #endif /* _TRACE_SYSCALLS_${CLASSCAP}_H */ |
| 208 | |
| 209 | /* This part must be outside protection */ |
| 210 | #include \"../../../probes/define_trace.h\" |
| 211 | |
| 212 | #else /* CREATE_SYSCALL_TABLE */ |
| 213 | |
| 214 | #include \"${INPUTFILE}_${CLASS}_override.h\" |
| 215 | #include \"syscalls_${CLASS}_override.h\" |
| 216 | " >> ${HEADER} |
| 217 | |
| 218 | NRARGS=0 |
| 219 | |
| 220 | if [ "$CLASS" = integers ]; then |
| 221 | #noargs |
| 222 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 223 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\ |
| 224 | '#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\ |
| 225 | 'TRACE_SYSCALL_TABLE\(syscalls_noargs, sys_$1, $2, $3\)\n'\ |
| 226 | '#endif/g'\ |
| 227 | ${TMPFILE} >> ${HEADER} |
| 228 | fi |
| 229 | |
| 230 | #others. |
| 231 | grep -v "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 232 | perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\ |
| 233 | '#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\ |
| 234 | 'TRACE_SYSCALL_TABLE(sys_$1, sys_$1, $2, $3)\n'\ |
| 235 | '#endif/g'\ |
| 236 | ${TMPFILE} >> ${HEADER} |
| 237 | |
| 238 | echo -n \ |
| 239 | " |
| 240 | #endif /* CREATE_SYSCALL_TABLE */ |
| 241 | " >> ${HEADER} |
| 242 | |
| 243 | #fields names: ...char * type with *name* or *file* or *path* or *root* |
| 244 | # or *put_old* or *type* |
| 245 | cp -f ${HEADER} ${TMPFILE} |
| 246 | rm -f ${HEADER} |
| 247 | perl -p -e 's/__field\(([^,)]*char \*), ([^\)]*)(name|file|path|root|put_old|type)([^\)]*)\)/__string_from_user($2$3$4, $2$3$4)/g'\ |
| 248 | ${TMPFILE} >> ${HEADER} |
| 249 | cp -f ${HEADER} ${TMPFILE} |
| 250 | rm -f ${HEADER} |
| 251 | perl -p -e 's/tp_assign\(([^,)]*char \*), ([^,]*)(name|file|path|root|put_old|type)([^,]*), ([^\)]*)\)/tp_copy_string_from_user($2$3$4, $5)/g'\ |
| 252 | ${TMPFILE} >> ${HEADER} |
| 253 | |
| 254 | #prettify addresses heuristics. |
| 255 | #field names with addr or ptr |
| 256 | cp -f ${HEADER} ${TMPFILE} |
| 257 | rm -f ${HEADER} |
| 258 | perl -p -e 's/__field\(([^,)]*), ([^,)]*addr|[^,)]*ptr)([^),]*)\)/__field_hex($1, $2$3)/g'\ |
| 259 | ${TMPFILE} >> ${HEADER} |
| 260 | |
| 261 | #field types ending with '*' |
| 262 | cp -f ${HEADER} ${TMPFILE} |
| 263 | rm -f ${HEADER} |
| 264 | perl -p -e 's/__field\(([^,)]*\*), ([^),]*)\)/__field_hex($1, $2)/g'\ |
| 265 | ${TMPFILE} >> ${HEADER} |
| 266 | |
| 267 | #strip the extra type information from tp_assign. |
| 268 | cp -f ${HEADER} ${TMPFILE} |
| 269 | rm -f ${HEADER} |
| 270 | perl -p -e 's/tp_assign\(([^,)]*), ([^,]*), ([^\)]*)\)/tp_assign($2, $3)/g'\ |
| 271 | ${TMPFILE} >> ${HEADER} |
| 272 | |
| 273 | rm -f ${INPUTFILE}.tmp |
| 274 | rm -f ${TMPFILE} |
| 275 | rm -f ${SRCFILE} |