summaryrefslogtreecommitdiffstats
path: root/init
blob: ee297250351679c5122831ff399db2a23a2f421d (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
#!/bin/sh

. /init_functions

msg ":: Loading Initramfs"

/bin/mount -t sysfs none /sys
/bin/mount -t proc  none /proc

read CMDLINE </proc/cmdline
export CMDLINE

# Used so hooks can override params to kinit
export kinit_params=""
export root=""
echo "/sbin/modprobe" > /proc/sys/kernel/modprobe

for cmd in ${CMDLINE}; do
    case "${cmd}" in
        \#*) break ;; # ignore everything after a # in the commandline
        # The kernel passes those to the kernel on its own
        [0123456Ss]) ;;
        single) ;;
        #Allow "init=X" to pass-through
        init=*) kinit_params="${kinit_params} ${cmd}" ;;
        # only export stuff that does work with dash :)
        *=*) cmd="$(replace -s= "${cmd}" '.' '_')"
             cmd="$(replace -s= "${cmd}" '-' '_')"
             export "${cmd}"
             ;;
        *)   cmd="$(replace "${cmd}" '.' '_')"
             cmd="$(replace "${cmd}" '-' '_')"
             export "${cmd}=y" 
           ;;
    esac
done

if [ -n "${disablehooks}" ]; then
    for d in $(replace "${disablehooks}" ','); do
        export "hook_${d}=disabled"
    done
fi

if [ -n "${disablemodules}" ]; then
    for d in $(replace "${disablemodules}" ','); do
        export "mod_${d}=disabled"
    done
fi

if [ -n "${earlymodules}" ]; then
    for m in $(replace "${earlymodules}" ','); do
        /sbin/modprobe -q ${m} > /dev/null 2>&1
    done
fi

. /config

for m in ${MODULES}; do
    TST=""
    eval "TST=\$mod_${m}"
    if [ "${TST}" != "disabled" ]; then
        /sbin/modprobe -q ${m} > /dev/null 2>&1
    fi
done

# If rootdelay is empty or not a non-negative integer, set it to 10
if [ -z "${rootdelay}" -o ! "${rootdelay}" -ge 0 ]; then
    export rootdelay=10
fi
# We'll wait for the root device, so make sure klibc doesn't
export kinit_params="${kinit_params} rootdelay=0"

if [ -e "/hooks" ]; then
    for h in ${HOOKS}; do
        TST=""
        eval "TST=\$hook_${h}"
        if [ "${TST}" != "disabled" ]; then
            run_hook () { msg "${h}: no run function defined"; }
            if [ -e "/hooks/${h}" ]; then
               . /hooks/${h}
               msg ":: Running Hook [${h}]"
               run_hook
            fi
        fi
    done
fi

if [ "${break}" = "y" ]; then
    echo ":: Break requested, type 'exit' to resume operation"
    echo "   NOTE: klibc contains no 'ls' binary, use 'echo *' instead"
    PS1="ramfs$ " /bin/sh -i
fi

# If we boot from NFS, don't check for a block device in /dev
# Let kinit do it all
if [ -z "${nfsroot}" -a "${root}" != "/dev/nfs" ]; then
    if ! poll_device "${root}" ${rootdelay}; then
        msg "\nRoot device '${root}' doesn't exist, attempting to create it"

        eval $(/bin/parseblock "${root}")
        if [ -z "${BLOCKDEVICE}" ]; then
            echo "ERROR: Failed to parse block device ids for '${root}'"
        else
            echo "/bin/mknod /dev/root b ${BLOCKDEVICE}"
            /bin/mknod /dev/root b ${BLOCKDEVICE} >/dev/null
            export root="/dev/root"
        fi
        if [ ! -b "${root}" -a ! -L "${root}" ]; then
            err "Unable to detect or create root device '${root}'"
            echo "You are being dropped to a recovery shell"
            echo "    Type 'reboot' to reboot"
            echo "    Type 'exit' to try and continue booting"
            echo "NOTE: klibc contains no 'ls' binary, use 'echo *' instead"
            echo ""
            echo "If the device '${root}' gets created while you are here,"
            echo "try adding 'rootdelay=10' or higher to the kernel command-line"
            PS1="ramfs$ " /bin/sh -i
            msg "Trying to continue (this will most likely fail)..."
        fi
    fi
fi

if [ -f "/message" ]; then
    msg "$(cat /message)"
fi
msg ":: Initramfs Completed - control passing to kinit"

#Special handling if udev is running
udevpid=$(/bin/minips -C udevd -o pid=)
if [ -n "${udevpid}" ]; then
    /bin/kill -9 ${udevpid} > /dev/null 2>&1
    /bin/sleep 0.01
fi

exec /bin/kinit "$@" -- "root=${root}" ${kinit_params} > /dev/null 2>&1