blob: 27be324a43251f568536cf8211751fe281ccf418 (
plain) (
blame)
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
|
#!/bin/bash
kexec=$(which kexec 2>/dev/null)
if [ -z "$kexec" ]; then
echo "Failed to find kexec binary in PATH. Exiting."
exit 1
fi
. /opt/openslx/bin/slx-tools
perror() {
echo "$*" >&2
exit 1
}
dl_long() {
download_retry --max-time 30 "$@"
}
# Download <base> <relative_or_absolute>
dl_prefix() {
local url
if regex_imatch "$2" 'https?:'; then
url="$2"
else
url="$1/${2#/}"
fi
dl_long "$url"
}
kexec_load() {
. /opt/openslx/config
local serverip="${SLX_KCL_SERVERS%% *}"
local base="http://${serverip}"
local tempdir oldKcl ipxeId
local newKernel newInitRd newKcl
tempdir="$(mktemp -d)"
newKernel="${tempdir}/kernel"
newInitRd="${tempdir}/initrd"
read -r oldKcl < /proc/cmdline
newKcl="$oldKcl" # Fallback
ipxeId=
for opts in ${oldKcl}; do
case "${opts}" in
slx.ipxe.id=*)
ipxeId="${opts#slx.ipxe.id=}"
;;
esac
done
if [ -n "$ipxeId" ]; then
local ok=
if ! dl_long "${base}/boot/ipxe?type=bash&entryid=$ipxeId&uuid=$(cat /etc/system-uuid)" > "${tempdir}/bootentry"; then
echo "Could not download iPXE menu entry, falling back..."
else
local ip="$( ip addr show dev $SLX_PXE_NETIF | awk '{ if ($1 == "inet") { print $2; exit 0 }}' )"
local gateway="$( ip route show dev $SLX_PXE_NETIF | awk '{ if ($1 == "default") {print $3; exit 0 }}' )"
local dns="${SLX_DNS// /,}"
local hostname="${SLX_HOSTNAME}"
local domain="${SLX_NET_DOMAIN}"
local dnssl="${SLX_NET_SEARCH// /,}"
local mac="${SLX_PXE_MAC}"
local ntpsrv="${SLX_NTP_SERVER// /,}"
[ -z "$mac" ] && mac="$( ip addr show dev $SLX_PXE_NETIF | awk '{ if ($1 == "link/ether") { print $2; exit 0 }}' )"
. "${tempdir}/bootentry"
if [ -z "$kernel" ]; then
echo "iPXE boot entry is missing kernel, falling back..."
elif [ -z "$initrd" ]; then
echo "iPXE boot entry is missing initRd, falling back..."
else
# OK-ish, download files
dl_prefix "${base}" "${kernel}" > "$newKernel" \
|| perror "Error downloading new kernel $kernel"
for file in "${initrd[@]}"; do
dl_prefix "${base}" "${file}" >> "$newInitRd" \
|| perror "Could not download initrd $file"
done
if [ -n "$kcl" ]; then
newKcl="${kcl} slx.ipxe.id=$ipxeId"
echo "New KCL is $newKcl"
fi
ok=true
fi
fi
[ -z "$ok" ] && ipxeId=
fi
if [ -z "$ipxeId" ]; then
echo "No iPXE menu id, guessing file names..."
dl_long "${base}/${SLX_BASE_PATH}/kernel" > "$newKernel" \
|| perror "Failed to download new kernel."
dl_long "${base}/${SLX_BASE_PATH}/initramfs-stage31" > "$newInitRd" \
|| perror "Failed to download new initramfs."
# Logo is not critical
dl_long "${base}/tftp/bwlp.cpio" > "$tempdir/logo" \
&& cat "$tempdir/logo" >> "$newInitRd"
newKcl="$( cat /proc/cmdline )"
# TODO patch all the ipv4.* vars if they exist
fi
if grep -q '\bsplash\b' /proc/cmdline; then
newKcl="$(printf "%s" "${newKcl}" | sed -r 's/\bvga=\S*//g') vga=current"
else
newKcl="$(printf "%s" "${newKcl}" | sed -r 's/\bvga=\S*//g')"
fi
if ! kexec -l "${newKernel}" --initrd "${newInitRd}" --command-line="${newKcl}"; then
echo "Failed to load kernel/initrd from ${tempdir}"
exit 1
fi
}
kexec_load
|
