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Commit | Line | Data |
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1cea325b ER |
1 | #!/bin/sh |
2 | # | |
3 | # geninitrd functions | |
4 | ||
5 | # Find root device from fstab. | |
6 | # | |
7 | # @param string $fstab location of /etc/fstab | |
1cea325b | 8 | # @return false on failure |
c3b4c8c8 | 9 | # |
1cea325b ER |
10 | # Sets global variables: |
11 | # - $rootdev | |
5101a385 | 12 | # - $rootdev_add |
1cea325b ER |
13 | # - $rootFS |
14 | # | |
15 | find_root() { | |
16 | local fstab="$1" | |
ca2c2012 | 17 | local function="${PROGRAM:+$PROGRAM: }find_root" |
5101a385 | 18 | local rootopt |
1cea325b | 19 | |
8bc082c8 | 20 | eval $(awk '!/^[\t ]*#/ && $2 == "/" {printf("rootdev=\"%s\"\nrootFs=\"%s\"\nrootopt=\"%s\"\n", $1, $3, $4)}' $fstab) |
1cea325b | 21 | if [ -z "$rootdev" ]; then |
8bc082c8 | 22 | echo >&2 "$function: can't find fstab entry for root mountpoint" |
1cea325b ER |
23 | return 1 |
24 | fi | |
25 | ||
5101a385 AM |
26 | # additional devices needed (xfs logdev) |
27 | rootdev_add=$(echo "$rootopt" | awk -F',' '{ for (i=1; i<=NF; i++) { if ($i ~ /^logdev=/) { gsub(/^logdev=/, NIL, $i); print $i; } } }') | |
28 | ||
1cea325b ER |
29 | case $rootdev in |
30 | LABEL=*) | |
31 | if [ ! -x /sbin/blkid ]; then | |
32 | echo >&2 "$function: /sbin/blkid is missing" | |
33 | return 2 | |
34 | fi | |
35 | ||
36 | local label=${rootdev#"LABEL="} | |
10d8618c | 37 | local dev=$(/sbin/blkid -l -t LABEL="$label" -o device) |
8bc082c8 ER |
38 | if [ "$dev" ]; then |
39 | if [ ! -r "$dev" ]; then | |
40 | echo >&2 "$function: blkid returned device $dev which doesn't exist" | |
41 | return 2 | |
42 | fi | |
1cea325b ER |
43 | rootdev=$dev |
44 | fi | |
45 | ;; | |
46 | ||
47 | UUID=*) | |
48 | if [ ! -x /sbin/blkid ]; then | |
49 | echo >&2 "$function: /sbin/blkid is missing" | |
50 | return 2 | |
51 | fi | |
52 | ||
53 | local uuid=${rootdev#"UUID="} | |
10d8618c | 54 | local dev=$(/sbin/blkid -l -t UUID="$uuid" -o device) |
1cea325b | 55 | |
8bc082c8 ER |
56 | if [ "$dev" ]; then |
57 | if [ ! -r "$dev" ]; then | |
58 | echo >&2 "$function: blkid returned device $dev which doesn't exist" | |
59 | return 2 | |
60 | fi | |
1cea325b ER |
61 | rootdev=$dev |
62 | fi | |
63 | ;; | |
f2581979 | 64 | esac |
65 | ||
66 | case $rootdev in | |
28bd482b | 67 | /dev/dm-*) |
b6c4aab1 | 68 | local node |
d2cb46cf | 69 | node=$(dm_node "$rootdev") || return 1 |
b6c4aab1 ER |
70 | if [ "$node" ]; then |
71 | rootdev="$node" | |
72 | fi | |
d348a28e | 73 | ;; |
74 | esac | |
b6c4aab1 | 75 | |
28bd482b AF |
76 | case $rootdev in |
77 | /dev/mapper/*) | |
f595ec04 AF |
78 | local dm_subsystem=$(dm_subsystem "$rootdev") |
79 | case $dm_subsystem in | |
80 | LVM) | |
28bd482b AF |
81 | local node |
82 | node=$(dm_lvm2_name "$rootdev") || return 1 | |
83 | if [ "$node" ]; then | |
84 | rootdev="$node" | |
85 | fi | |
86 | return 0 | |
87 | ;; | |
f595ec04 | 88 | CRYPT) |
28bd482b AF |
89 | return 0 |
90 | ;; | |
91 | esac | |
92 | esac | |
93 | ||
6d2c63ed ER |
94 | if [ "$rootFs" = "nfs" ]; then |
95 | rootdev="/dev/nfs" | |
96 | return 0 | |
97 | fi | |
98 | ||
1cea325b | 99 | if [ ! -r "$rootdev" ]; then |
dd3e4c24 | 100 | echo >&2 "$function: rootfs device file $rootdev doesn't exist" |
1cea325b ER |
101 | return 1 |
102 | fi | |
103 | ||
104 | return 0 | |
105 | } | |
b6c4aab1 ER |
106 | |
107 | # resolve /dev/dm-0 to lvm2 node | |
dc006e4d | 108 | # which they got from blkid program fs was specifed as UUID= in fstab |
b6c4aab1 ER |
109 | dm_lvm2_name() { |
110 | local node="$1" | |
22cc635e | 111 | local dm_minor stat |
e211ded9 ER |
112 | |
113 | if [ ! -b "$node" ]; then | |
114 | echo >&2 "dm_lvm2_name: $node is not a block device" | |
115 | return 1 | |
116 | fi | |
117 | ||
edecd1e2 ER |
118 | case $node in |
119 | /dev/dm-*) | |
120 | dm_minor=${node#/dev/dm-} | |
121 | ;; | |
122 | /dev/mapper/*) | |
ebd1ffc3 | 123 | stat=$(stat -L -c %T "$node") || die "stat failed: $node" |
22cc635e | 124 | dm_minor=$((0x$stat)) |
edecd1e2 ER |
125 | ;; |
126 | esac | |
127 | ||
8bc082c8 ER |
128 | local lvm_path=$(/sbin/lvdisplay -c 2>/dev/null | awk -F: -vn=$dm_minor '{node=$1; major=$12; minor=$13; if (n == minor) print node}' | xargs) |
129 | if [ -z "$lvm_path" ]; then | |
130 | # XXX: this could happen also for non-lvm nodes? | |
a14a054a ER |
131 | cat >&2 <<-EOF |
132 | LVM doesn't recognize device-mapper node with minor $dm_minor | |
133 | ||
134 | In case your Physical Volumes are device mapper nodes, you should add to lvm.conf: | |
135 | types = [ "device-mapper", 254 ] | |
136 | ||
137 | In case the LVM nodes are not present yet, it could be fixed by running: | |
138 | # vgscan --mknodes | |
139 | EOF | |
8bc082c8 ER |
140 | return 2 |
141 | fi | |
142 | if [ ! -r "$lvm_path" ]; then | |
143 | echo >&2 "lvdisplay returned $lvm_path which doesn't exist in filesystem; try running 'vgscan --mknodes'." | |
144 | return 2 | |
145 | fi | |
18a69561 | 146 | echo $lvm_path |
b6c4aab1 | 147 | } |
bc0d6f2d | 148 | |
d2cb46cf ER |
149 | # resolve /dev/dm-0, /dev/mapper/name |
150 | # @return DM name | |
151 | dm_name() { | |
bc0d6f2d | 152 | local node="$1" |
202b8e4c | 153 | dmsetup info -c --noheadings -o name $node |
d2cb46cf ER |
154 | } |
155 | ||
f595ec04 | 156 | # get subsystem name for DM node |
d2cb46cf | 157 | # node can be /dev/dm-0, /dev/mapper/name |
f595ec04 AF |
158 | # @return subsystem name |
159 | dm_subsystem() { | |
7b924576 ER |
160 | local node="$1" out |
161 | out=$(dmsetup info -c --noheadings -o subsystem $node) | |
61ecb7f3 | 162 | if [ $? -eq 0 -a -n "$out" ]; then |
7b924576 ER |
163 | echo "$out" |
164 | return | |
165 | fi | |
166 | ||
167 | # for very old kernels (2.6.16), subsystem is empty, assume LVM | |
168 | # TODO: fix this if needed to have crypt as well | |
169 | echo "LVM" | |
d2cb46cf ER |
170 | } |
171 | ||
172 | # resolve any dm node to it's full path in /dev/mapper | |
173 | dm_node() { | |
174 | local node="$1" | |
175 | printf "/dev/mapper/%s" $(dm_name "$node") | |
bc0d6f2d | 176 | } |
cefcd7bb | 177 | |
d967e9de | 178 | # find modules by class |
cefcd7bb AM |
179 | # find_modules_by_class 0106 - finds modules for SATA devices in the system |
180 | # find_modules_by_class 0c03 - finds modules for USB controllers | |
181 | find_modules_by_class() { | |
c3b4c8c8 | 182 | if modprobe --version | grep -q "^kmod"; then |
d967e9de AM |
183 | find_modules_by_class_kmod $@ |
184 | else | |
185 | find_modules_by_class_mit $@ | |
186 | fi | |
187 | } | |
188 | ||
189 | # find modules by class (kmod version) | |
190 | # find_modules_by_class 0106 - finds modules for SATA devices in the system | |
191 | # find_modules_by_class 0c03 - finds modules for USB controllers | |
192 | find_modules_by_class_kmod() { | |
a1548180 | 193 | local req_class="$1" i j modaliases |
cefcd7bb | 194 | |
a1548180 AM |
195 | if [ ! -d "/sys/devices" ]; then |
196 | warn "No /sys/devices/ found. Is /sys mounted?" | |
cefcd7bb AM |
197 | return |
198 | fi | |
199 | ||
a1548180 AM |
200 | for i in $(grep -li "^0x${req_class}" /sys/devices/pci*/*/class); do |
201 | j=$(dirname $i) | |
202 | modaliases="$modaliases $(cat $j/modalias)" | |
203 | done | |
fbd21a62 AM |
204 | |
205 | if [ -z "$modaliases" ]; then | |
206 | return | |
207 | fi | |
208 | ||
9fc71a60 | 209 | echo $modaliases | xargs modprobe --set-version $kernel -aRn | awk ' |
a1548180 AM |
210 | BEGIN { skip_modules[notexisting_module]=""; modules[1]=""; xhci=""; ehci=""; ohci=""; uhci="" } |
211 | { | |
212 | module=$1 | |
213 | if (module == "xhci_hcd") { | |
214 | xhci="xhci_hcd" | |
215 | } else if (module == "ehci_hcd") { | |
216 | ehci="ehci_hcd" | |
217 | } else if (module == "ohci_hcd") { | |
218 | ohci="ohci_hcd" | |
219 | } else if (module == "uhci_hcd") { | |
220 | uhci="uhci_hcd" | |
221 | } else if (!(module in skip_modules)) { | |
222 | modules[cnt]=module | |
223 | } | |
224 | skip_modules[module]=1; | |
225 | } | |
226 | END { | |
227 | # xhci/ehci/ohci/uhci hack to preserve such order | |
228 | printf "%s %s %s %s ", xhci, ehci, ohci, uhci; | |
229 | for (i in modules) { printf "%s ", modules[i]; }; | |
230 | } | |
a4dcea34 | 231 | ' |
cefcd7bb | 232 | } |
d967e9de AM |
233 | |
234 | # find modules by class (module-init-tools version) | |
235 | # find_modules_by_class 0106 - finds modules for SATA devices in the system | |
236 | # find_modules_by_class 0c03 - finds modules for USB controllers | |
237 | find_modules_by_class_mit() { | |
a8e24440 | 238 | local req_class="$1" pcimap lspci |
d967e9de AM |
239 | |
240 | pcimap="/lib/modules/$kernel/modules.pcimap" | |
241 | ||
242 | lspci=$(find_tool /sbin/lspci) | |
243 | if [ ! -x "$lspci" ]; then | |
244 | warn "Failed to execute lspci. Is pciutils package installed?" | |
245 | fi | |
246 | ||
247 | # no pcimap, nothing to lookup from | |
248 | if [ ! -f "$pcimap" ]; then | |
c3b4c8c8 | 249 | warn "No $pcimap file. Cannot find modules for desired class!" |
d967e9de AM |
250 | return |
251 | fi | |
252 | ||
253 | if [ -z "$lspci" ]; then | |
254 | return | |
255 | fi | |
256 | ||
257 | LC_ALL=C lspci -p "$pcimap" -kvmmn | awk -vreq_class="${req_class}" ' | |
c3b4c8c8 ER |
258 | BEGIN { skip_modules[notexisting_module]=""; modules[1]=""; xhci=""; ehci=""; ohci=""; uhci="" } |
259 | /^Slot:/ { found=0 } | |
260 | /^Class:/ { if (req_class == $2) { found = 1 } } | |
261 | /^Driver:/ { if (found) { | |
262 | module = $2; | |
263 | if (module == "xhci_hcd") { | |
264 | xhci = "xhci_hcd" | |
265 | } else if (module == "ehci_hcd") { | |
266 | ehci = "ehci_hcd" | |
267 | } else if (module == "ohci_hcd") { | |
268 | ohci = "ohci_hcd" | |
269 | } else if (module == "uhci_hcd") { | |
270 | uhci = "uhci_hcd" | |
271 | } else if (!(module in skip_modules)) { | |
272 | modules[cnt] = module | |
273 | } | |
274 | skip_modules[module] = 1; | |
275 | } | |
276 | found=0 | |
277 | } | |
278 | END { | |
279 | # xhci/ehci/ohci/uhci hack to preserve such order | |
280 | printf "%s %s %s %s ", xhci, ehci, ohci, uhci; | |
281 | for (i in modules) { printf "%s ", modules[i]; } | |
282 | } | |
d967e9de AM |
283 | ' |
284 | } | |
285 |