blob: 1b10a01da4bcda2fba98a13fe65e4f52ae9444dd (
plain)
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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
#!/bin/bash
# A LinHES development script to enter a chroot tree.
#########################################################################
# Configuration: #
#-----------------------------------------------------------------------#
chrootBaseDir='build_root' # basename of chroot tree. #
repoBaseDir='pkg_repo' # basename of package repository tree. #
repoBaseDir_src='../pkg_repo' # basename of package repository tree. #
toolsDir='linhes_dev' # directory name of development tools. #
packageDir='linhes_pkgbuild' # package development directory. #
C_B='\e[1m' # set bold : comment out for no bold. #
#########################################################################
C_N='\e[0m' # back to normal text output. #
myDir=$(pwd) # initial working directory. #
ARCH=${0##*.} # pick off the architecture part. #
BROOT="$myDir/$chrootBaseDir.$ARCH" # chroot subdir for $ARCH #
#########################################################################
# Proceedures / Functions: #
#-----------------------------------------------------------------------#
# Acquire the lock and modify the value, use: V=$(Modify +|-)
Modify() { # $1 is + for up and - for down.
local LOCKFILE=.lock
local VALUFILE=.inst
( # Acquire the lock:
flock -e -w 2 200
[ -e $VALUFILE ] || echo 0 > $VALUFILE
VAL=$(cat $VALUFILE)
NEW=$(expr $VAL $1 1)
echo "$NEW" > $VALUFILE
echo "$NEW"
) 200>$LOCKFILE
}
#-----------------------------------------------------------------------#
# set the title bar for an xterm or Konsole.
title() { # args are the title
echo -en "\e]0;$@\a" # for xterm,
echo -en "\e]30;$@\a" # for Konsole.
}
#-----------------------------------------------------------------------#
# check if a filesystem/directory is already mounted & if not, mount it.
# ckMount -t <fstype> <mntDir>
# ckMount --bind <srcDir> <dstDir>
ckMount() { # $1= -t|--bind, $2= fstype|srcDir $3= mntDir|dstDir
grep -q /$BROOT/$3 /proc/mounts || {
[ -d "$3" ] || mkdir -p $3
echo -e "mounting ${C_B}$3${C_N}"
case $1 in
-t) mount $1 $2 $2 $3 ;;
--bind) mount $1 $myDir/$2 $3 ;;
esac
}
}
#-----------------------------------------------------------------------#
# if this is the last incident, unmount all.
cleanUp() { # no arguments
# mark the exit to normal operation:
title Normal
V=$(Modify -)
[ "$V" -ne "0" ] && exit 0
# unmount all:
local mnts1="data/$repoBaseDir data/$packageDir build_tools"
local mnts2=" dev dev/pts sys proc"
for i in $mnts1 $mnts2 ; do
grep -q $BROOT/$i /proc/mounts && {
echo -e "unMounting ${C_B}$i${C_N}"
umount $BROOT/$i # >& /dev/null
}
done
}
#=======================================================================#
# make certain that the chroot contains some files:
copyIn() { # no arguments
local F=etc/resolv.conf
[ -e "$BROOT/$F" ] || cp -f /$F $F
[ -f etc/bashrc_linhes ] || {
local D="$myDir/$toolsDir/templates/etc"
cp -f $D/bashrc etc/bashrc_linhes
cp -f $D/kmdev.sh etc/profile.d/
cp -f $D/.bashrc root/
cp -f $D/.bash_profile root/
chmod 0755 root/.bashrc root/.bash_profile etc/profile.d/kmdev.sh
}
}
#########################################################################
# Prerequisites: #
#-----------------------------------------------------------------------#
# must be root:
[ $EUID -ne 0 ] && {
echo -e "${C_B}chroot needs root priv's.${C_N}" 1>&2
exit 1
}
# must have the chroot subdirectory:
[ -d $BROOT ] || {
echo -e "${C_B}$BROOT${C_N} directory not found!"
exit 2
}
# if building packages, needs $packageDir
if [ -d "$packageDir" ]; then
echo -e "Found ${C_B}$packageDir${C_N}"
else
printf "%s\n" "**********************************************************************"
printf "* %-66s *\n" "Could Not find $packageDir"
printf "* %-66s *\n" "If you wish to be able to build packages within the chroot, then"
printf "* %-66s *\n" "Please checkout the package repository into the current directory."
printf "* %-66s *\n" "Its located @ knoppmyth.net/mount/repository/${packageDir}.git"
printf "%s\n" "**********************************************************************"
fi
# change to the chroot subdirectory:
cd $BROOT || {
echo -e "Could NOT cd to ${C_B}$BROOT${C_N} !"
exit 3
}
#########################################################################
# Main: #
#-----------------------------------------------------------------------#
V=$(Modify +) # bump the instance count.
trap cleanUp 1 2 15 EXIT
ckMount -t proc proc
ckMount -t sysfs sys
mount --bind /dev $BROOT/dev
#ckMount -t devpts dev/pts
#[ -e dev/random ] || mknod dev/random c 1 8
#[ -e dev/urandom ] || mknod dev/urandom c 1 9
#[ -e dev/tty ] || mknod dev/tty c 5 0
#[ -e dev/ptmx ] || mknod dev/ptmx c 5 2
ckMount --bind $toolsDir/build_tools build_tools
ckMount --bind $packageDir data/$packageDir
ckMount --bind $repoBaseDir_src data/$repoBaseDir
copyIn
# change the titlebar to indicate chroot:
title "CHROOT : $ARCH"
# The actual chroot:
env -i TERM="$TERM" DISPLAY="$DISPLAY" /usr/bin/chroot . /bin/bash --login
# Note: the unMounts take place within the 'cleanUp' proceedure.
#########################################################################
# End
|
