blob: becb79807c6f7875588a59666802229c81aefb18 (
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
# Local filesystem mounting -*- shell-script -*-
local_top()
{
if [ "${local_top_used}" != "yes" ]; then
[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-top"
run_scripts /scripts/local-top
[ "$quiet" != "y" ] && log_end_msg
fi
local_top_used=yes
}
local_block()
{
[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-block"
run_scripts /scripts/local-block "$@"
[ "$quiet" != "y" ] && log_end_msg
}
local_premount()
{
if [ "${local_premount_used}" != "yes" ]; then
[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-premount"
run_scripts /scripts/local-premount
[ "$quiet" != "y" ] && log_end_msg
fi
local_premount_used=yes
}
local_bottom()
{
if [ "${local_premount_used}" = "yes" ] || [ "${local_top_used}" = "yes" ]; then
[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-bottom"
run_scripts /scripts/local-bottom
[ "$quiet" != "y" ] && log_end_msg
fi
local_premount_used=no
local_top_used=no
}
# $1=device ID to mount
# $2=optionname (for root and etc)
# $3=panic if device is missing (true or false, default: true)
# Sets $DEV to the resolved device node
local_device_setup()
{
local dev_id="$1"
local name="$2"
local may_panic="${3:-true}"
local real_dev
local time_elapsed
local count
wait_for_udev 10
# Load ubi with the correct MTD partition and return since fstype
# doesn't work with a char device like ubi.
if [ -n "$UBIMTD" ]; then
modprobe ubi "mtd=$UBIMTD"
DEV="${dev_id}"
return
fi
# Don't wait for a device that doesn't have a corresponding
# device in /dev and isn't resolvable by blkid (e.g. mtd0)
if [ "${dev_id#/dev}" = "${dev_id}" ] &&
[ "${dev_id#*=}" = "${dev_id}" ]; then
DEV="${dev_id}"
return
fi
# If the root device hasn't shown up yet, give it a little while
# to allow for asynchronous device discovery (e.g. USB). We
# also need to keep invoking the local-block scripts in case
# there are devices stacked on top of those.
if ! real_dev=$(resolve_device "${dev_id}") ||
! get_fstype "${real_dev}" >/dev/null; then
log_begin_msg "Waiting for ${name}"
# Timeout is max(30, rootdelay) seconds (approximately)
slumber=30
if [ "${ROOTDELAY:-0}" -gt $slumber ]; then
slumber=$ROOTDELAY
fi
while true; do
sleep 1
time_elapsed="$(time_elapsed)"
local_block "${dev_id}"
# If mdadm's local-block script counts the
# number of times it is run, make sure to
# run it the expected number of times.
while true; do
if [ -f /run/count.mdadm.initrd ]; then
count="$(cat /run/count.mdadm.initrd)"
elif [ -n "${count}" ]; then
# mdadm script deleted it; put it back
count=$((count + 1))
echo "${count}" >/run/count.mdadm.initrd
else
break
fi
if [ "${count}" -ge "${time_elapsed}" ]; then
break;
fi
/scripts/local-block/mdadm "${dev_id}"
done
if real_dev=$(resolve_device "${dev_id}") &&
get_fstype "${real_dev}" >/dev/null; then
wait_for_udev 10
log_end_msg 0
break
fi
if [ "${time_elapsed}" -ge "${slumber}" ]; then
log_end_msg 1 || true
break
fi
done
fi
# We've given up, but we'll let the user fix matters if they can
while ! real_dev=$(resolve_device "${dev_id}") ||
! get_fstype "${real_dev}" >/dev/null; do
if ! $may_panic; then
echo "Gave up waiting for ${name}"
return 1
fi
echo "Gave up waiting for ${name} device. Common problems:"
echo " - Boot args (cat /proc/cmdline)"
echo " - Check rootdelay= (did the system wait long enough?)"
if [ "${name}" = root ]; then
echo " - Check root= (did the system wait for the right device?)"
fi
echo " - Missing modules (cat /proc/modules; ls /dev)"
panic "ALERT! ${dev_id} does not exist. Dropping to a shell!"
done
DEV="${real_dev}"
}
local_mount_root()
{
local_top
if [ -z "${ROOT}" ]; then
panic "No root device specified. Boot arguments must include a root= parameter."
fi
local_device_setup "${ROOT}" "root file system"
ROOT="${DEV}"
# Get the root filesystem type if not set
if [ -z "${ROOTFSTYPE}" ] || [ "${ROOTFSTYPE}" = auto ]; then
FSTYPE=$(get_fstype "${ROOT}")
else
FSTYPE=${ROOTFSTYPE}
fi
local_premount
if [ "${readonly?}" = "y" ]; then
roflag=-r
else
roflag=-w
fi
checkfs "${ROOT}" root "${FSTYPE}"
# Mount root
# shellcheck disable=SC2086
if ! mount ${roflag} ${FSTYPE:+-t "${FSTYPE}"} ${ROOTFLAGS} "${ROOT}" "${rootmnt?}"; then
panic "Failed to mount ${ROOT} as root file system."
fi
}
local_mount_fs()
{
read_fstab_entry "$1"
local_device_setup "$MNT_FSNAME" "$1 file system"
MNT_FSNAME="${DEV}"
local_premount
if [ "${readonly}" = "y" ]; then
roflag=-r
else
roflag=-w
fi
if [ "$MNT_PASS" != 0 ]; then
checkfs "$MNT_FSNAME" "$MNT_DIR" "${MNT_TYPE}"
fi
# Mount filesystem
if ! mount ${roflag} -t "${MNT_TYPE}" -o "${MNT_OPTS}" "$MNT_FSNAME" "${rootmnt}${MNT_DIR}"; then
panic "Failed to mount ${MNT_FSNAME} as $MNT_DIR file system."
fi
}
mountroot()
{
local_mount_root
}
mount_top()
{
# Note, also called directly in case it's overridden.
local_top
}
mount_premount()
{
# Note, also called directly in case it's overridden.
local_premount
}
mount_bottom()
{
# Note, also called directly in case it's overridden.
local_bottom
}
|
