X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=instrumentation%2Fsyscalls%2Flttng-syscalls-generate-headers.sh;h=a0ae0f2a2405ce30c7b2971fc3c92df5ae7aea50;hb=94f9e23353016f630bf9be45128f8cf4c57b4888;hp=c68f2e146460e4cf7d0774e654b5ec2ab879695a;hpb=177b36924b27f47d604bcdd8e363bb401286fbb7;p=lttng-modules.git

diff --git a/instrumentation/syscalls/lttng-syscalls-generate-headers.sh b/instrumentation/syscalls/lttng-syscalls-generate-headers.sh
old mode 100644
new mode 100755
index c68f2e14..a0ae0f2a
--- a/instrumentation/syscalls/lttng-syscalls-generate-headers.sh
+++ b/instrumentation/syscalls/lttng-syscalls-generate-headers.sh
@@ -1,19 +1,39 @@
 #!/bin/sh
 
 # Generate system call probe description macros from syscall metadata dump file.
+# The resulting header will be written in the headers subdirectory, in a file name
+# based on the name of the input file. 
+#
 # example usage:
 #
-# lttng-syscalls-generate-headers.sh integers 3.0.4 x86-64-syscalls-3.0.4
-# lttng-syscalls-generate-headers.sh pointers 3.0.4 x86-64-syscalls-3.0.4
+# lttng-syscalls-generate-headers.sh <type> <input_dir> <input_filename_in_dir> <bitness>
+# lttng-syscalls-generate-headers.sh integers 3.0.4 x86-64-syscalls-3.0.4 64
+# lttng-syscalls-generate-headers.sh pointers 3.0.4 x86-64-syscalls-3.0.4 64
 
 CLASS=$1
 INPUTDIR=$2
 INPUTFILE=$3
+BITNESS=$4
 INPUT=${INPUTDIR}/${INPUTFILE}
 SRCFILE=gen.tmp.0
 TMPFILE=gen.tmp.1
 HEADER=headers/${INPUTFILE}_${CLASS}.h
 
+if [ x"$INPUTDIR" = x"" ]; then
+	echo "Error: Please specify input directory as second argument"
+	exit 1
+fi
+
+if [ x"$INPUTFILE" = x"" ]; then
+	echo "Error: Please specify input file as third argument"
+	exit 1
+fi
+
+if [ x"$BITNESS" != x"32" ] && [ x"$BITNESS" != x"64" ]; then
+	echo "Error: Please specify bitness as fourth argument (\"32\" or \"64\")"
+	exit 1
+fi
+
 cp ${INPUT} ${SRCFILE}
 
 #Cleanup
@@ -40,39 +60,45 @@ if [ "$CLASS" = pointers ]; then
 	mv ${TMPFILE} ${SRCFILE}
 fi
 
+if [ x"$CLASSCAP" = x"" ]; then
+	echo "Error: Please specify \"integers\" or \"pointers\" as first argument"
+	rm -f ${SRCFILE}
+	exit 1
+fi
+
 echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER}
 
 echo \
 "#ifndef CREATE_SYSCALL_TABLE
 
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM syscalls_${CLASS}
-
 #if !defined(_TRACE_SYSCALLS_${CLASSCAP}_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_SYSCALLS_${CLASSCAP}_H
 
 #include <linux/tracepoint.h>
 #include <linux/syscalls.h>
+#include \"${INPUTFILE}_${CLASS}_override.h\"
+#include \"syscalls_${CLASS}_override.h\"
 " >> ${HEADER}
 
 if [ "$CLASS" = integers ]; then
 
 NRARGS=0
 
-echo \
-'DECLARE_EVENT_CLASS_NOARGS(syscalls_noargs,\n'\
+printf \
+'SC_DECLARE_EVENT_CLASS_NOARGS(syscalls_noargs,\n'\
 '	TP_STRUCT__entry(),\n'\
 '	TP_fast_assign(),\n'\
 '	TP_printk()\n'\
-')'\
+')\n'\
 	>> ${HEADER}
 
 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^)]*)\) '\
 'args: \(([^)]*)\)/'\
-'DEFINE_EVENT_NOARGS(syscalls_noargs, sys_$1)'\
-'/g'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_DEFINE_EVENT_NOARGS(syscalls_noargs, sys_$1)\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 fi
@@ -86,13 +112,15 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^)]*)\) '\
 'args: \(([^)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $5),\n'\
 '	TP_ARGS($5),\n'\
 '	TP_STRUCT__entry(__field($4, $5)),\n'\
-'	TP_fast_assign(tp_assign($5, $5)),\n'\
+'	TP_fast_assign(tp_assign($4, $5, $5)),\n'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 # types: 4 5
@@ -103,13 +131,15 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^,]*), ([^)]*)\) '\
 'args: \(([^,]*), ([^)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $6, $5 $7),\n'\
 '	TP_ARGS($6, $7),\n'\
 '	TP_STRUCT__entry(__field($4, $6) __field($5, $7)),\n'\
-'	TP_fast_assign(tp_assign($6, $6) tp_assign($7, $7)),\n'\
+'	TP_fast_assign(tp_assign($4, $6, $6) tp_assign($5, $7, $7)),\n'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 # types: 4 5 6
@@ -120,13 +150,15 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^,]*), ([^,]*), ([^)]*)\) '\
 'args: \(([^,]*), ([^,]*), ([^)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $7, $5 $8, $6 $9),\n'\
 '	TP_ARGS($7, $8, $9),\n'\
 '	TP_STRUCT__entry(__field($4, $7) __field($5, $8) __field($6, $9)),\n'\
-'	TP_fast_assign(tp_assign($7, $7) tp_assign($8, $8) tp_assign($9, $9)),\n'\
+'	TP_fast_assign(tp_assign($4, $7, $7) tp_assign($5, $8, $8) tp_assign($6, $9, $9)),\n'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 
@@ -138,13 +170,15 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
 'args: \(([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $8, $5 $9, $6 $10, $7 $11),\n'\
 '	TP_ARGS($8, $9, $10, $11),\n'\
 '	TP_STRUCT__entry(__field($4, $8) __field($5, $9) __field($6, $10) __field($7, $11)),\n'\
-'	TP_fast_assign(tp_assign($8, $8) tp_assign($9, $9) tp_assign($10, $10) tp_assign($11, $11)),\n'\
+'	TP_fast_assign(tp_assign($4, $8, $8) tp_assign($5, $9, $9) tp_assign($6, $10, $10) tp_assign($7, $11, $11)),\n'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 # types: 4  5  6  7  8
@@ -155,13 +189,15 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\) '\
 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $9, $5 $10, $6 $11, $7 $12, $8 $13),\n'\
 '	TP_ARGS($9, $10, $11, $12, $13),\n'\
 '	TP_STRUCT__entry(__field($4, $9) __field($5, $10) __field($6, $11) __field($7, $12) __field($8, $13)),\n'\
-'	TP_fast_assign(tp_assign($9, $9) tp_assign($10, $10) tp_assign($11, $11) tp_assign($12, $12) tp_assign($13, $13)),\n'\
+'	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'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 
@@ -173,22 +209,19 @@ grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) '\
 'types: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\) '\
 'args: \(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^\)]*)\)/'\
-'TRACE_EVENT(sys_$1,\n'\
+'#ifndef OVERRIDE_'"${BITNESS}"'_sys_$1\n'\
+'SC_TRACE_EVENT(sys_$1,\n'\
 '	TP_PROTO($4 $10, $5 $11, $6 $12, $7 $13, $8 $14, $9 $15),\n'\
 '	TP_ARGS($10, $11, $12, $13, $14, $15),\n'\
 '	TP_STRUCT__entry(__field($4, $10) __field($5, $11) __field($6, $12) __field($7, $13) __field($8, $14) __field($9, $15)),\n'\
-'	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'\
+'	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'\
 '	TP_printk()\n'\
-')/g'\
+')\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 # Macro for tracing syscall table
 
-rm -f ${TMPFILE}
-for NRARGS in $(seq 0 6); do
-	grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} >> ${TMPFILE}
-done
-
 echo \
 "
 #endif /*  _TRACE_SYSCALLS_${CLASSCAP}_H */
@@ -197,8 +230,10 @@ echo \
 #include \"../../../probes/define_trace.h\"
 
 #else /* CREATE_SYSCALL_TABLE */
-" >> ${HEADER}
 
+#include \"${INPUTFILE}_${CLASS}_override.h\"
+#include \"syscalls_${CLASS}_override.h\"
+" >> ${HEADER}
 
 NRARGS=0
 
@@ -206,14 +241,18 @@ if [ "$CLASS" = integers ]; then
 #noargs
 grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
-'TRACE_SYSCALL_TABLE\(syscalls_noargs, sys_$1, $2, $3\)/g'\
+'#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\
+'TRACE_SYSCALL_TABLE\(syscalls_noargs, sys_$1, $2, $3\)\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 fi
 
 #others.
 grep -v "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE}
 perl -p -e 's/^syscall ([^ ]*) nr ([^ ]*) nbargs ([^ ]*) .*$/'\
-'TRACE_SYSCALL_TABLE(sys_$1, sys_$1, $2, $3)/g'\
+'#ifndef OVERRIDE_TABLE_'"${BITNESS}"'_sys_$1\n'\
+'TRACE_SYSCALL_TABLE(sys_$1, sys_$1, $2, $3)\n'\
+'#endif/g'\
 	${TMPFILE} >> ${HEADER}
 
 echo -n \
@@ -221,6 +260,36 @@ echo -n \
 #endif /* CREATE_SYSCALL_TABLE */
 " >> ${HEADER}
 
+#fields names: ...char * type with *name* or *file* or *path* or *root*
+# or *put_old* or *type*
+cp -f ${HEADER} ${TMPFILE}
+rm -f ${HEADER}
+perl -p -e 's/__field\(([^,)]*char \*), ([^\)]*)(name|file|path|root|put_old|type)([^\)]*)\)/__string_from_user($2$3$4, $2$3$4)/g'\
+	${TMPFILE} >> ${HEADER}
+cp -f ${HEADER} ${TMPFILE}
+rm -f ${HEADER}
+perl -p -e 's/tp_assign\(([^,)]*char \*), ([^,]*)(name|file|path|root|put_old|type)([^,]*), ([^\)]*)\)/tp_copy_string_from_user($2$3$4, $5)/g'\
+	${TMPFILE} >> ${HEADER}
+
+#prettify addresses heuristics.
+#field names with addr or ptr
+cp -f ${HEADER} ${TMPFILE}
+rm -f ${HEADER}
+perl -p -e 's/__field\(([^,)]*), ([^,)]*addr|[^,)]*ptr)([^),]*)\)/__field_hex($1, $2$3)/g'\
+	${TMPFILE} >> ${HEADER}
+
+#field types ending with '*'
+cp -f ${HEADER} ${TMPFILE}
+rm -f ${HEADER}
+perl -p -e 's/__field\(([^,)]*\*), ([^),]*)\)/__field_hex($1, $2)/g'\
+	${TMPFILE} >> ${HEADER}
+
+#strip the extra type information from tp_assign.
+cp -f ${HEADER} ${TMPFILE}
+rm -f ${HEADER}
+perl -p -e 's/tp_assign\(([^,)]*), ([^,]*), ([^\)]*)\)/tp_assign($2, $3)/g'\
+	${TMPFILE} >> ${HEADER}
+
 rm -f ${INPUTFILE}.tmp
 rm -f ${TMPFILE}
 rm -f ${SRCFILE}