3 # Generate system call probe description macros from syscall metadata dump file.
4 # The resulting header will be written in the headers subdirectory, in a file name
5 # based on the name of the input file.
9 # lttng-syscalls-generate-headers.sh <type> <input_dir> <input_filename_in_dir> <bitness>
10 # lttng-syscalls-generate-headers.sh integers 3.0.4 x86-64-syscalls-3.0.4 64
11 # lttng-syscalls-generate-headers.sh pointers 3.0.4 x86-64-syscalls-3.0.4 64
17 INPUT
=${INPUTDIR}/${INPUTFILE}
20 HEADER
=headers
/${INPUTFILE}_
${CLASS}.h
22 if [ x
"$INPUTDIR" = x
"" ]; then
23 echo "Error: Please specify input directory as second argument"
27 if [ x
"$INPUTFILE" = x
"" ]; then
28 echo "Error: Please specify input file as third argument"
32 if [ x
"$BITNESS" != x
"32" ] && [ x
"$BITNESS" != x
"64" ]; then
33 echo "Error: Please specify bitness as fourth argument (\"32\" or \"64\")"
37 cp ${INPUT} ${SRCFILE}
40 perl
-p -e 's/^\[.*\] //g' ${SRCFILE} > ${TMPFILE}
41 mv ${TMPFILE} ${SRCFILE}
43 perl
-p -e 's/^syscall sys_([^ ]*)/syscall $1/g' ${SRCFILE} > ${TMPFILE}
44 mv ${TMPFILE} ${SRCFILE}
48 if [ "$CLASS" = integers
]; then
49 #select integers and no-args.
51 grep -v "\\*\|cap_user_header_t" ${SRCFILE} > ${TMPFILE}
52 mv ${TMPFILE} ${SRCFILE}
56 if [ "$CLASS" = pointers
]; then
57 #select system calls using pointers.
59 grep "\\*\|cap_#user_header_t" ${SRCFILE} > ${TMPFILE}
60 mv ${TMPFILE} ${SRCFILE}
63 if [ x
"$CLASSCAP" = x
"" ]; then
64 echo "Error: Please specify \"integers\" or \"pointers\" as first argument"
69 echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER}
72 "#ifndef CREATE_SYSCALL_TABLE
74 #if !defined(_TRACE_SYSCALLS_${CLASSCAP}_H) || defined(TRACE_HEADER_MULTI_READ)
75 #define _TRACE_SYSCALLS_${CLASSCAP}_H
77 #include <linux/tracepoint.h>
78 #include <linux/syscalls.h>
79 #include \"${INPUTFILE}_${CLASS}_override.h\"
80 #include \"syscalls_${CLASS}_override.h\"
83 if [ "$CLASS" = integers
]; then
88 'SC_DECLARE_EVENT_CLASS_NOARGS(syscalls_noargs,\n'\
89 ' TP_STRUCT__entry(),\n'\
90 ' TP_fast_assign(),\n'\
95 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
96 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
97 'types: \(([^)]*)\) '\
99 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
100 'SC_DEFINE_EVENT_NOARGS(syscalls_noargs, sys_$1)\n'\
102 ${TMPFILE} >> ${HEADER}
111 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
112 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
113 'types: \(([^)]*)\) '\
114 'args: \(([^)]*)\)/'\
115 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
116 'SC_TRACE_EVENT(sys_$1,\n'\
117 ' TP_PROTO($4 $5),\n'\
119 ' TP_STRUCT__entry(__field($4, $5)),\n'\
120 ' TP_fast_assign(tp_assign($4, $5, $5)),\n'\
124 ${TMPFILE} >> ${HEADER}
130 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
131 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
132 'types: \(([^,]*), ([^)]*)\) '\
133 'args: \(([^,]*), ([^)]*)\)/'\
134 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
135 'SC_TRACE_EVENT(sys_$1,\n'\
136 ' TP_PROTO($4 $6, $5 $7),\n'\
137 ' TP_ARGS($6, $7),\n'\
138 ' TP_STRUCT__entry(__field($4, $6) __field($5, $7)),\n'\
139 ' TP_fast_assign(tp_assign($4, $6, $6) tp_assign($5, $7, $7)),\n'\
143 ${TMPFILE} >> ${HEADER}
149 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
150 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
151 'types: \(([^,]*), ([^,]*), ([^)]*)\) '\
152 'args: \(([^,]*), ([^,]*), ([^)]*)\)/'\
153 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
154 'SC_TRACE_EVENT(sys_$1,\n'\
155 ' TP_PROTO($4 $7, $5 $8, $6 $9),\n'\
156 ' TP_ARGS($7, $8, $9),\n'\
157 ' TP_STRUCT__entry(__field($4, $7) __field($5, $8) __field($6, $9)),\n'\
158 ' TP_fast_assign(tp_assign($4, $7, $7) tp_assign($5, $8, $8) tp_assign($6, $9, $9)),\n'\
162 ${TMPFILE} >> ${HEADER}
169 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
170 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
171 'types: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
172 'args: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
173 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
174 'SC_TRACE_EVENT(sys_$1,\n'\
175 ' TP_PROTO($4 $8, $5 $9, $6 $10, $7 $11),\n'\
176 ' TP_ARGS($8, $9, $10, $11),\n'\
177 ' TP_STRUCT__entry(__field($4, $8) __field($5, $9) __field($6, $10) __field($7, $11)),\n'\
178 ' TP_fast_assign(tp_assign($4, $8, $8) tp_assign($5, $9, $9) tp_assign($6, $10, $10) tp_assign($7, $11, $11)),\n'\
182 ${TMPFILE} >> ${HEADER}
188 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
189 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
190 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
191 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
192 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
193 'SC_TRACE_EVENT(sys_$1,\n'\
194 ' TP_PROTO($4 $9, $5 $10, $6 $11, $7 $12, $8 $13),\n'\
195 ' TP_ARGS($9, $10, $11, $12, $13),\n'\
196 ' TP_STRUCT__entry(__field($4, $9) __field($5, $10) __field($6, $11) __field($7, $12) __field($8, $13)),\n'\
197 ' 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'\
201 ${TMPFILE} >> ${HEADER}
205 # args 10 11 12 13 14 15
208 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
209 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
210 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\) '\
211 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\)/'\
212 '#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
213 'SC_TRACE_EVENT(sys_$1,\n'\
214 ' TP_PROTO($4 $10, $5 $11, $6 $12, $7 $13, $8 $14, $9 $15),\n'\
215 ' TP_ARGS($10, $11, $12, $13, $14, $15),\n'\
216 ' TP_STRUCT__entry(__field($4, $10) __field($5, $11) __field($6, $12) __field($7, $13) __field($8, $14) __field($9, $15)),\n'\
217 ' 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'\
221 ${TMPFILE} >> ${HEADER}
223 # Macro for tracing syscall table
227 #endif /* _TRACE_SYSCALLS_${CLASSCAP}_H */
229 /* This part must be outside protection
*/
230 #include \"../../../probes/define_trace.h\"
232 #else /* CREATE_SYSCALL_TABLE */
234 #include \"${INPUTFILE}_${CLASS}_override.h\"
235 #include \"syscalls_${CLASS}_override.h\"
240 if [ "$CLASS" = integers ]; then
242 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
243 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
244 '#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\
245 'TRACE_SYSCALL_TABLE\(syscalls_noargs, sys_$1, $2, $3\)\n'\
247 ${TMPFILE} >> ${HEADER}
251 grep -v "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
252 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
253 '#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\
254 'TRACE_SYSCALL_TABLE(sys_$1, sys_$1, $2, $3)\n'\
256 ${TMPFILE} >> ${HEADER}
260 #endif /* CREATE_SYSCALL_TABLE */
263 #fields names: ...char * type with *name* or *file* or *path* or *root*
264 # or *put_old* or *type*
265 cp -f ${HEADER} ${TMPFILE}
267 perl -p -e 's/__field\(([^,)]*char \*), ([^\)]*)(name|file|path|root|put_old|type)([^\)]*)\)/__string_from_user($2$3$4, $2$3$4)/g'\
268 ${TMPFILE} >> ${HEADER}
269 cp -f ${HEADER} ${TMPFILE}
271 perl -p -e 's/tp_assign\(([^,)]*char \*), ([^,]*)(name|file|path|root|put_old|type)([^,]*), ([^\)]*)\)/tp_copy_string_from_user($2$3$4, $5)/g'\
272 ${TMPFILE} >> ${HEADER}
274 #prettify addresses heuristics.
275 #field names with addr or ptr
276 cp -f ${HEADER} ${TMPFILE}
278 perl -p -e 's/__field\(([^,)]*), ([^,)]*addr|[^,)]*ptr)([^),]*)\)/__field_hex($1, $2$3)/g'\
279 ${TMPFILE} >> ${HEADER}
281 #field types ending with '*'
282 cp -f ${HEADER} ${TMPFILE}
284 perl -p -e 's/__field\(([^,)]*\*), ([^),]*)\)/__field_hex($1, $2)/g'\
285 ${TMPFILE} >> ${HEADER}
287 #strip the extra type information from tp_assign.
288 cp -f ${HEADER} ${TMPFILE}
290 perl -p -e 's/tp_assign\(([^,)]*), ([^,]*), ([^\)]*)\)/tp_assign($2, $3)/g'\
291 ${TMPFILE} >> ${HEADER}
293 rm -f ${INPUTFILE}.tmp