/usr/bin/stap-prep is in systemtap 2.9-2ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | #! /bin/bash
LANG=C; export LANG
check_error() { if test $1 != 0; then echo $2; exit $1; fi }
prep_rpm_based() {
# uname -r can produce different kinds of output:
# 2.6.32-30.el6.x86_64 (no variant, but including ".arch")
# 2.6.18-194.3.1.el5debug ("variant", without dot, no arch)
# 2.6.33.4-95.fc13.i686.PAE (".arch.variant", two dots)
# 3.18.6-100.fc20.i686+PAE (".arch+variant", dot, plus)
if [ "$#" -lt 1 ]; then
UNAME=`uname -r` # determine the kernel running on the machine
else
UNAME=$1 #user passed in uname value
fi
UNAME=`echo $UNAME | sed "s/ //"` #strip out any whitespace
KERNEL="kernel"
for VARIANT in debug kdump PAE xen; do
# strip out ".variant" or else "+variant" or else "variant" at end.
TMP=`echo $UNAME | sed "s/[\.\+]\?$VARIANT\$//"`
if [ "$TMP" != "$UNAME" ]; then
UNAME=$TMP; KERNEL="kernel-$VARIANT"
fi
done
KERN_ARCH=`uname -m`
KERN_REV=`echo $UNAME | sed s/.$KERN_ARCH//` # strip arch from uname
CANDIDATES="$KERNEL-$KERN_REV.$KERN_ARCH \
$KERNEL-devel-$KERN_REV.$KERN_ARCH \
$KERNEL-debuginfo-$KERN_REV.$KERN_ARCH"
NEEDED=`rpm --qf "%{name}-%{version}-%{release}.%{arch}\n" \
-q $CANDIDATES | grep "is not installed" | awk '{print $2}'`
if [ "$NEEDED" != "" ]; then
echo -e "Need to install the following packages:\n$NEEDED"
if [ `id -u` = "0" ]; then #attempt to install
yum install -y --enablerepo=\* $NEEDED
rpm -q $NEEDED
check_error $? "problem installing rpm(s) $NEEDED"
fi
fi
}
prep_deb_based() {
if [ $# -ne 0 ]; then
echo "Specifying kernel version is not yet support on deb based systems." 1>&2
exit 1
fi
# 2.6.32-5-amd64
# 2.6.32-37-generic
ABINAME="$(cut -d " " -f 3 /proc/version)"
# 2.6.32
BASEVERSION="$(echo "$ABINAME" | cut -d "-" -f 1)"
case "$DISTRO" in
Debian) # 2.6.32-39
if uname -v | grep -q Debian; then
VERSION="$(uname -v | cut -d " " -f 4)"
else
VERSION="$(cut -d " " -f 5 /proc/version | cut -d ")" -f 1)"
fi
;;
Ubuntu)
# 2.6.32-37.81
VERSION="$(cut -d " " -f 2 /proc/version_signature | cut -d "-" -f 1-2)"
;;
esac
(
echo "make >= 0"
echo "linux-image-$ABINAME = $VERSION"
echo "linux-headers-$ABINAME = $VERSION"
case "$DISTRO" in
Debian)
echo "linux-image-$ABINAME-dbg = $VERSION"
;;
Ubuntu)
echo "linux-image-$ABINAME-dbgsym = $VERSION"
;;
esac
) | while read package relation requiredversion; do
installedversion="$(dpkg-query -W "$package" 2> /dev/null | cut -f 2)"
if [ "$installedversion" = "" ]; then
availableversion="$(apt-cache show $package 2> /dev/null | grep ^Version: | cut -d " " -f 2)"
if [ "$availableversion" = "" ]; then
echo "You need package $package but it does not seem to be available"
if [ "$DISTRO" = "Ubuntu" -a "$(echo $package | grep dbgsym$)" ]; then
echo " Ubuntu -dbgsym packages are typically in a separate repository"
echo " Follow https://wiki.ubuntu.com/DebuggingProgramCrash to add this repository"
elif [ "$DISTRO" = "Debian" -a "$(echo $package | grep dbg$)" ]; then
echo " Debian does not have -dbg packages for all kernels. Consider switching to a kernel that has one."
fi
else
echo "Please install $package"
fi
elif ! dpkg --compare-versions $installedversion $relation $requiredversion; then
echo "Package $package version $installedversion does not match version of currently running kernel: $requiredversion"
echo " Consider apt-get upgrade && reboot"
fi
done
user="$(id --user --name)"
if [ "$user" != "root" ]; then
groups="$(id --groups --name)"
for i in stapusr stapdev; do
if [ "$(echo $groups | grep $i)" = "" ]; then
echo "Be root or adduser $user $i"
fi
done
fi
}
DISTRO="$(lsb_release --id --short 2> /dev/null)"
if [ $? -ne 0 ]; then
DISTRO="unknown"
fi
case "$DISTRO" in
Debian|Ubuntu)
prep_deb_based "$@"
;;
*)
prep_rpm_based "$@"
;;
esac
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