| 1 | #!/bin/bash |
| 2 | |
| 3 | # example usage: |
| 4 | # lttng-get-syscall-inout.sh table-syscall-inout.txt select 1 |
| 5 | |
| 6 | FILENAME=$1 |
| 7 | SYSCALL_NAME=$2 |
| 8 | ARG_NR=$3 |
| 9 | TMPFILE=inout.tmp.1 |
| 10 | TMPFILE2=inout.tmp.2 |
| 11 | |
| 12 | if [ x"${FILENAME}" = x"" ]; then |
| 13 | echo "Error: Please specify input file name as first argument" |
| 14 | exit 1 |
| 15 | fi |
| 16 | |
| 17 | if [ x"${SYSCALL_NAME}" = x"" ]; then |
| 18 | echo "Error: Please specify system call name as second argument" |
| 19 | exit 1 |
| 20 | fi |
| 21 | |
| 22 | if [[ x"${ARG_NR}" = x"" || ${ARG_NR} == 0 ]]; then |
| 23 | echo "Error: Please specify argument number larger than 0 as 3rd argument" |
| 24 | exit 1 |
| 25 | fi |
| 26 | |
| 27 | grep "syscall ${SYSCALL_NAME} " ${FILENAME} > ${TMPFILE} |
| 28 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) .*/'\ |
| 29 | '$2/g' ${TMPFILE} > ${TMPFILE2} |
| 30 | |
| 31 | NR_MATCH=$(wc -l ${TMPFILE} | perl -p -e 's/^([^ ])*.*/$1/g') |
| 32 | if [ ${NR_MATCH} -gt 1 ]; then |
| 33 | echo "Error: more than one system call match" |
| 34 | exit 1 |
| 35 | fi |
| 36 | |
| 37 | if [ ${NR_MATCH} -eq 0 ]; then |
| 38 | # no match, default to inout |
| 39 | echo "sc_inout" |
| 40 | exit 0 |
| 41 | fi |
| 42 | |
| 43 | SC_ARGS=$(cat ${TMPFILE2}) |
| 44 | |
| 45 | if [ ${ARG_NR} -gt ${SC_ARGS} ]; then |
| 46 | echo "Error: argument number (${ARG_NR}) is larger than number of syscall arguments (${SC_ARGS})" |
| 47 | exit 1 |
| 48 | fi |
| 49 | |
| 50 | if [ ${ARG_NR} == 1 ]; then |
| 51 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \(([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 52 | fi |
| 53 | |
| 54 | if [ ${ARG_NR} == 2 ]; then |
| 55 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \([^,]*, ([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 56 | fi |
| 57 | |
| 58 | if [ ${ARG_NR} == 3 ]; then |
| 59 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \([^,]*, [^,]*, ([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 60 | fi |
| 61 | |
| 62 | if [ ${ARG_NR} == 4 ]; then |
| 63 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \([^,]*, [^,]*, [^,]*, ([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 64 | fi |
| 65 | |
| 66 | if [ ${ARG_NR} == 5 ]; then |
| 67 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \([^,]*, [^,]*, [^,]*, [^,]*, ([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 68 | fi |
| 69 | |
| 70 | if [ ${ARG_NR} == 6 ]; then |
| 71 | perl -p -e 's/^syscall ([^ ]*) nbargs ([^ ]*) rw: \([^,]*, [^,]*, [^,]*, [^,]*, [^,]*, ([^,\)]*).*/$3/g' ${TMPFILE} > ${TMPFILE2} |
| 72 | fi |
| 73 | |
| 74 | SC_ARG_TYPE=$(cat ${TMPFILE2}) |
| 75 | |
| 76 | if [ ${SC_ARG_TYPE} = "r" ]; then |
| 77 | echo "sc_in" |
| 78 | fi |
| 79 | if [ ${SC_ARG_TYPE} = "w" ]; then |
| 80 | echo "sc_out" |
| 81 | fi |
| 82 | if [ ${SC_ARG_TYPE} = "rw" ]; then |
| 83 | echo "sc_inout" |
| 84 | fi |
| 85 | |
| 86 | rm -f ${TMPFILE} ${TMPFILE2} |