3 # Generate system call probe description macros from syscall metadata dump file.
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
12 INPUT
=${INPUTDIR}/${INPUTFILE}
15 HEADER
=headers
/${INPUTFILE}_
${CLASS}.h
17 cp ${INPUT} ${SRCFILE}
20 perl
-p -e 's/^\[.*\] //g' ${SRCFILE} > ${TMPFILE}
21 mv ${TMPFILE} ${SRCFILE}
23 perl
-p -e 's/^syscall sys_([^ ]*)/syscall $1/g' ${SRCFILE} > ${TMPFILE}
24 mv ${TMPFILE} ${SRCFILE}
28 if [ "$CLASS" = integers
]; then
29 #select integers and no-args.
31 grep -v "\\*\|cap_user_header_t" ${SRCFILE} > ${TMPFILE}
32 mv ${TMPFILE} ${SRCFILE}
36 if [ "$CLASS" = pointers
]; then
37 #select system calls using pointers.
39 grep "\\*\|cap_#user_header_t" ${SRCFILE} > ${TMPFILE}
40 mv ${TMPFILE} ${SRCFILE}
43 echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER}
46 "#ifndef CREATE_SYSCALL_TABLE
48 #if !defined(_TRACE_SYSCALLS_${CLASSCAP}_H) || defined(TRACE_HEADER_MULTI_READ)
49 #define _TRACE_SYSCALLS_${CLASSCAP}_H
51 #include <linux/tracepoint.h>
52 #include <linux/syscalls.h>
53 #include \"${INPUTFILE}_${CLASS}_override.h\"
56 if [ "$CLASS" = integers
]; then
61 'SC_DECLARE_EVENT_CLASS_NOARGS(syscalls_noargs,\n'\
62 ' TP_STRUCT__entry(),\n'\
63 ' TP_fast_assign(),\n'\
68 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
69 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
70 'types: \(([^)]*)\) '\
72 '#ifndef OVERRIDE_sys_$1\n'\
73 'SC_DEFINE_EVENT_NOARGS(syscalls_noargs, sys_$1)\n'\
75 ${TMPFILE} >> ${HEADER}
84 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
85 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
86 'types: \(([^)]*)\) '\
88 '#ifndef OVERRIDE_sys_$1\n'\
89 'SC_TRACE_EVENT(sys_$1,\n'\
90 ' TP_PROTO($4 $5),\n'\
92 ' TP_STRUCT__entry(__field($4, $5)),\n'\
93 ' TP_fast_assign(tp_assign($4, $5, $5)),\n'\
97 ${TMPFILE} >> ${HEADER}
103 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
104 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
105 'types: \(([^,]*), ([^)]*)\) '\
106 'args: \(([^,]*), ([^)]*)\)/'\
107 '#ifndef OVERRIDE_sys_$1\n'\
108 'SC_TRACE_EVENT(sys_$1,\n'\
109 ' TP_PROTO($4 $6, $5 $7),\n'\
110 ' TP_ARGS($6, $7),\n'\
111 ' TP_STRUCT__entry(__field($4, $6) __field($5, $7)),\n'\
112 ' TP_fast_assign(tp_assign($4, $6, $6) tp_assign($5, $7, $7)),\n'\
116 ${TMPFILE} >> ${HEADER}
122 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
123 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
124 'types: \(([^,]*), ([^,]*), ([^)]*)\) '\
125 'args: \(([^,]*), ([^,]*), ([^)]*)\)/'\
126 '#ifndef OVERRIDE_sys_$1\n'\
127 'SC_TRACE_EVENT(sys_$1,\n'\
128 ' TP_PROTO($4 $7, $5 $8, $6 $9),\n'\
129 ' TP_ARGS($7, $8, $9),\n'\
130 ' TP_STRUCT__entry(__field($4, $7) __field($5, $8) __field($6, $9)),\n'\
131 ' TP_fast_assign(tp_assign($4, $7, $7) tp_assign($5, $8, $8) tp_assign($6, $9, $9)),\n'\
135 ${TMPFILE} >> ${HEADER}
142 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
143 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
144 'types: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
145 'args: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
146 '#ifndef OVERRIDE_sys_$1\n'\
147 'SC_TRACE_EVENT(sys_$1,\n'\
148 ' TP_PROTO($4 $8, $5 $9, $6 $10, $7 $11),\n'\
149 ' TP_ARGS($8, $9, $10, $11),\n'\
150 ' TP_STRUCT__entry(__field($4, $8) __field($5, $9) __field($6, $10) __field($7, $11)),\n'\
151 ' TP_fast_assign(tp_assign($4, $8, $8) tp_assign($5, $9, $9) tp_assign($6, $10, $10) tp_assign($7, $11, $11)),\n'\
155 ${TMPFILE} >> ${HEADER}
161 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
162 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
163 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
164 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
165 '#ifndef OVERRIDE_sys_$1\n'\
166 'SC_TRACE_EVENT(sys_$1,\n'\
167 ' TP_PROTO($4 $9, $5 $10, $6 $11, $7 $12, $8 $13),\n'\
168 ' TP_ARGS($9, $10, $11, $12, $13),\n'\
169 ' TP_STRUCT__entry(__field($4, $9) __field($5, $10) __field($6, $11) __field($7, $12) __field($8, $13)),\n'\
170 ' 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'\
174 ${TMPFILE} >> ${HEADER}
178 # args 10 11 12 13 14 15
181 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
182 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
183 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\) '\
184 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\)/'\
185 '#ifndef OVERRIDE_sys_$1\n'\
186 'SC_TRACE_EVENT(sys_$1,\n'\
187 ' TP_PROTO($4 $10, $5 $11, $6 $12, $7 $13, $8 $14, $9 $15),\n'\
188 ' TP_ARGS($10, $11, $12, $13, $14, $15),\n'\
189 ' TP_STRUCT__entry(__field($4, $10) __field($5, $11) __field($6, $12) __field($7, $13) __field($8, $14) __field($9, $15)),\n'\
190 ' 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'\
194 ${TMPFILE} >> ${HEADER}
196 # Macro for tracing syscall table
199 for NRARGS in $(seq 0 6); do
200 grep "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} >> ${TMPFILE}
205 #endif /* _TRACE_SYSCALLS_${CLASSCAP}_H */
207 /* This part must be outside protection */
208 #include \"../../../probes/define_trace.h\"
210 #else /* CREATE_SYSCALL_TABLE */
212 #include \"${INPUTFILE}_${CLASS}_override.h\"
217 if [ "$CLASS" = integers
]; then
219 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
220 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
221 '#ifndef OVERRIDE_TABLE_sys_$1\n'\
222 'TRACE_SYSCALL_TABLE\(syscalls_noargs, sys_$1, $2, $3\)\n'\
224 ${TMPFILE} >> ${HEADER}
228 grep -v "^syscall
[^
]* nr
[^
]* nbargs
${NRARGS} " ${SRCFILE} > ${TMPFILE}
229 perl
-p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
230 '#ifndef OVERRIDE_TABLE_sys_$1\n'\
231 'TRACE_SYSCALL_TABLE(sys_$1, sys_$1, $2, $3)\n'\
233 ${TMPFILE} >> ${HEADER}
237 #endif /* CREATE_SYSCALL_TABLE */
240 #fields names: ...char * type with *name* or *file* or *path* or *root*
241 # or *put_old* or *type*
242 cp -f ${HEADER} ${TMPFILE}
244 perl
-p -e 's/__field\(([^,)]*char \*), ([^\)]*)(name|file|path|root|put_old|type)([^\)]*)\)/__string_from_user($2$3$4, $2$3$4)/g'\
245 ${TMPFILE} >> ${HEADER}
246 cp -f ${HEADER} ${TMPFILE}
248 perl
-p -e 's/tp_assign\(([^,)]*char \*), ([^,]*)(name|file|path|root|put_old|type)([^,]*), ([^\)]*)\)/tp_copy_string_from_user($2$3$4, $5)/g'\
249 ${TMPFILE} >> ${HEADER}
251 #prettify addresses heuristics.
252 #field names with addr or ptr
253 cp -f ${HEADER} ${TMPFILE}
255 perl
-p -e 's/__field\(([^,)]*), ([^,)]*addr|[^,)]*ptr)([^),]*)\)/__field_hex($1, $2$3)/g'\
256 ${TMPFILE} >> ${HEADER}
258 #field types ending with '*'
259 cp -f ${HEADER} ${TMPFILE}
261 perl
-p -e 's/__field\(([^,)]*\*), ([^),]*)\)/__field_hex($1, $2)/g'\
262 ${TMPFILE} >> ${HEADER}
264 #strip the extra type information from tp_assign.
265 cp -f ${HEADER} ${TMPFILE}
267 perl
-p -e 's/tp_assign\(([^,)]*), ([^,]*), ([^\)]*)\)/tp_assign($2, $3)/g'\
268 ${TMPFILE} >> ${HEADER}
270 rm -f ${INPUTFILE}.tmp
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